/* The GIMP -- an image manipulation program * Copyright (C) 1995 Spencer Kimball and Peter Mattis * * Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero * federico@nuclecu.unam.mx * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURIGHTE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Special thanks to: * * Luis Albarran (luis4@mindspring.com) - Nice UI suggestions * * Miguel de Icaza (miguel@nuclecu.unam.mx) - Pop-up menu suggestion * * Marcelo Malheiros (malheiro@dca.fee.unicamp.br) - many, many * suggestions, nice gradient files * * Adam Moss (adam@uunet.pipex.com) - idea for the hint bar * * Everyone on #gimp - many suggestions */ /* TODO: * * - Fix memory leaks: grad_free_gradient_editor() and any others * which I may have missed. * * - Add all of Marcelo's neat suggestions: * - Hue rotate, saturation, brightness, contrast. * * - Better handling of bogus gradient files and inconsistent * segments. Do not loop indefinitely in seg_get_segment_at() if * there is a missing segment between two others. * * - Add a Gradient brush mode (color changes as you move it). */ #include "config.h" #include #include #include #ifdef HAVE_UNISTD_H #include #endif #include "appenv.h" #include "cursorutil.h" #include "datafiles.h" #include "errors.h" #include "gimpcontext.h" #include "gimpdnd.h" #include "gimprc.h" #include "gimpui.h" #include "gradient.h" #include "gradientP.h" #include "gradient_header.h" #include "gradient_select.h" #include "libgimp/gimpenv.h" #include "libgimp/gimplimits.h" #include "libgimp/gimpmath.h" #include "libgimp/gimpcolorspace.h" #include "libgimp/gimpintl.h" #include "pixmaps/zoom_in.xpm" #include "pixmaps/zoom_out.xpm" /***** Magic numbers *****/ #define EPSILON 1e-10 #define GRAD_LIST_WIDTH 300 #define GRAD_LIST_HEIGHT 80 #define GRAD_SCROLLBAR_STEP_SIZE 0.05 #define GRAD_SCROLLBAR_PAGE_SIZE 0.75 #define GRAD_PREVIEW_WIDTH 600 #define GRAD_PREVIEW_HEIGHT 64 #define GRAD_CONTROL_HEIGHT 10 #define GRAD_COLOR_BOX_WIDTH 24 #define GRAD_COLOR_BOX_HEIGHT 16 #define GRAD_NUM_COLORS 10 #define GRAD_MOVE_TIME 150 /* ms between mouse click and detection of movement in gradient control */ #define GRAD_PREVIEW_EVENT_MASK (GDK_EXPOSURE_MASK | \ GDK_LEAVE_NOTIFY_MASK | \ GDK_POINTER_MOTION_MASK | \ GDK_POINTER_MOTION_HINT_MASK | \ GDK_BUTTON_PRESS_MASK | \ GDK_BUTTON_RELEASE_MASK) #define GRAD_CONTROL_EVENT_MASK (GDK_EXPOSURE_MASK | \ GDK_LEAVE_NOTIFY_MASK | \ GDK_POINTER_MOTION_MASK | \ GDK_POINTER_MOTION_HINT_MASK | \ GDK_BUTTON_PRESS_MASK | \ GDK_BUTTON_RELEASE_MASK | \ GDK_BUTTON1_MOTION_MASK) enum { GRAD_UPDATE_GRADIENT = 1 << 0, GRAD_UPDATE_PREVIEW = 1 << 1, GRAD_UPDATE_CONTROL = 1 << 2, GRAD_RESET_CONTROL = 1 << 3 }; /* Gradient editor type */ typedef enum { GRAD_DRAG_NONE = 0, GRAD_DRAG_LEFT, GRAD_DRAG_MIDDLE, GRAD_DRAG_ALL } control_drag_mode_t; typedef struct { GtkWidget *shell; GdkGC *gc; GtkWidget *hint_label; GtkWidget *clist; GtkWidget *scrollbar; GtkWidget *preview; GtkWidget *control; /* Zoom and scrollbar */ guint zoom_factor; GtkObject *scroll_data; /* Instant update */ gboolean instant_update; /* Gradient preview */ guchar *preview_rows[2]; /* For caching redraw info */ gint preview_last_x; gboolean preview_button_down; /* Gradient control */ GdkPixmap *control_pixmap; grad_segment_t *control_drag_segment; /* Segment which is being dragged */ grad_segment_t *control_sel_l; /* Left segment of selection */ grad_segment_t *control_sel_r; /* Right segment of selection */ control_drag_mode_t control_drag_mode; /* What is being dragged? */ guint32 control_click_time; /* Time when mouse was pressed */ gboolean control_compress; /* Compressing/expanding handles */ gint control_last_x; /* Last mouse position when dragging */ gdouble control_last_gx; /* Last position (wrt gradient) when dragging */ gdouble control_orig_pos; /* Original click position when dragging */ GtkWidget *control_main_popup; /* Popup menu */ GtkWidget *control_blending_label; /* Blending function label */ GtkWidget *control_coloring_label; /* Coloring type label */ GtkWidget *control_splitm_label; /* Split at midpoint label */ GtkWidget *control_splitu_label; /* Split uniformly label */ GtkWidget *control_delete_menu_item; /* Delete menu item */ GtkWidget *control_delete_label; /* Delete label */ GtkWidget *control_recenter_label; /* Re-center label */ GtkWidget *control_redistribute_label; /* Re-distribute label */ GtkWidget *control_flip_label; /* Flip label */ GtkWidget *control_replicate_label; /* Replicate label */ GtkWidget *control_blend_colors_menu_item; /* Blend colors menu item */ GtkWidget *control_blend_opacity_menu_item; /* Blend opacity menu item */ GtkWidget *control_left_load_popup; /* Left endpoint load menu */ GtkWidget *control_left_save_popup; /* Left endpoint save menu */ GtkWidget *control_right_load_popup; /* Right endpoint load menu */ GtkWidget *control_right_save_popup; /* Right endpoint save menu */ GtkWidget *control_blending_popup; /* Blending function menu */ GtkWidget *control_coloring_popup; /* Coloring type menu */ GtkWidget *control_sel_ops_popup; /* Selection ops menu */ GtkAccelGroup *accel_group; /* Blending and coloring menus */ GtkWidget *control_blending_items[5 + 1]; /* Add 1 for the "Varies" item */ GtkWidget *control_coloring_items[3 + 1]; /* Split uniformly dialog */ gint split_parts; /* Replicate dialog */ gint replicate_times; /* Saved colors */ struct { gdouble r, g, b, a; } saved_colors[GRAD_NUM_COLORS]; GtkWidget *left_load_color_boxes[GRAD_NUM_COLORS + 3]; GtkWidget *left_load_labels[GRAD_NUM_COLORS + 3]; GtkWidget *left_save_color_boxes[GRAD_NUM_COLORS]; GtkWidget *left_save_labels[GRAD_NUM_COLORS]; GtkWidget *right_load_color_boxes[GRAD_NUM_COLORS + 3]; GtkWidget *right_load_labels[GRAD_NUM_COLORS + 3]; GtkWidget *right_save_color_boxes[GRAD_NUM_COLORS]; GtkWidget *right_save_labels[GRAD_NUM_COLORS]; /* Color dialogs */ GtkWidget *left_color_preview; grad_segment_t *left_saved_segments; gboolean left_saved_dirty; GtkWidget *right_color_preview; grad_segment_t *right_saved_segments; gboolean right_saved_dirty; } GradientEditor; /***** Local functions *****/ static gint gradient_editor_clist_button_press (GtkWidget *widget, GdkEventButton *bevent, gpointer data); static gradient_t * gradient_editor_drag_gradient (GtkWidget *widget, gpointer data); static void gradient_editor_drop_gradient (GtkWidget *widget, gradient_t *gradient, gpointer data); /* Gradient editor functions */ static GtkWidget *ed_create_button (gchar *label, gchar *help_data, GtkSignalFunc signal_func, gpointer data); static void ed_fetch_foreground (double *fg_r, double *fg_g, double *fg_b, double *fg_a); static void ed_update_editor (int flags); static void ed_set_hint (gchar *str); static void ed_list_item_update (GtkWidget *widget, gint row, gint column, GdkEventButton *event, gpointer data); static void ed_initialize_saved_colors (void); /* Main dialog button callbacks & functions */ static void ed_new_gradient_callback (GtkWidget *, gpointer); static void ed_do_new_gradient_callback (GtkWidget *, gchar *, gpointer); static void ed_copy_gradient_callback (GtkWidget *, gpointer); static void ed_do_copy_gradient_callback (GtkWidget *, gchar *, gpointer); static void ed_delete_gradient_callback (GtkWidget *widget, gpointer data); static void ed_do_delete_gradient_callback (GtkWidget *widget, gboolean delete, gpointer data); static void ed_rename_gradient_callback (GtkWidget *, gpointer); static void ed_do_rename_gradient_callback (GtkWidget *, gchar *, gpointer); static void ed_save_pov_callback (GtkWidget *, gpointer); static void ed_do_save_pov_callback (GtkWidget *, gpointer); static void ed_cancel_save_pov_callback (GtkWidget *, gpointer); static gint ed_delete_save_pov_callback (GtkWidget *, GdkEvent *, gpointer); static void ed_refresh_grads_callback (GtkWidget *, gpointer); static void ed_close_callback (GtkWidget *, gpointer); /* Zoom, scrollbar & instant update callbacks */ static void ed_scrollbar_update (GtkAdjustment *, gpointer); static void ed_zoom_all_callback (GtkWidget *, gpointer); static void ed_zoom_out_callback (GtkWidget *, gpointer); static void ed_zoom_in_callback (GtkWidget *, gpointer); static void ed_instant_update_update (GtkWidget *, gpointer); /* Gradient preview functions */ static gint prev_events (GtkWidget *, GdkEvent *, gpointer); static void prev_set_hint (gint x); static void prev_set_foreground (gint x); static void prev_set_background (gint x); static void gradient_update (void); static void prev_update (gboolean recalculate); static void prev_fill_image (int width, int height, double left, double right); /* Gradient control functions */ static gint control_events (GtkWidget *, GdkEvent *, gpointer); static void control_do_hint (gint x, gint y); static void control_button_press (gint x, gint y, guint button, guint state); static gboolean control_point_in_handle (gint x, gint y, grad_segment_t *seg, control_drag_mode_t handle); static void control_select_single_segment (grad_segment_t *seg); static void control_extend_selection (grad_segment_t *seg, double pos); static void control_motion (gint x); static void control_compress_left (grad_segment_t *range_l, grad_segment_t *range_r, grad_segment_t *drag_seg, double pos); static void control_compress_range (grad_segment_t *range_l, grad_segment_t *range_r, double new_l, double new_r); static double control_move (grad_segment_t *range_l, grad_segment_t *range_r, double delta); /* Control update/redraw functions */ static void control_update (gboolean recalculate); static void control_draw (GdkPixmap *pixmap, int width, int height, double left, double right); static void control_draw_normal_handle (GdkPixmap *pixmap, double pos, int height); static void control_draw_middle_handle (GdkPixmap *pixmap, double pos, int height); static void control_draw_handle (GdkPixmap *pixmap, GdkGC *border_gc, GdkGC *fill_gc, int xpos, int height); static int control_calc_p_pos (double pos); static double control_calc_g_pos (int pos); /* Control popup functions */ static void cpopup_create_main_menu (void); static void cpopup_do_popup (void); static GtkWidget *cpopup_create_color_item (GtkWidget **color_box, GtkWidget **label); static GtkWidget *cpopup_create_menu_item_with_label (gchar *str, GtkWidget **label); static void cpopup_adjust_menus (void); static void cpopup_adjust_blending_menu (void); static void cpopup_adjust_coloring_menu (void); static void cpopup_check_selection_params (gint *equal_blending, gint *equal_coloring); static void cpopup_render_color_box (GtkPreview *preview, double r, double g, double b, double a); static GtkWidget *cpopup_create_load_menu (GtkWidget **color_boxes, GtkWidget **labels, gchar *label1, gchar *label2, GtkSignalFunc callback, gchar accel_key_0, guint8 accel_mods_0, gchar accel_key_1, guint8 accel_mods_1, gchar accel_key_2, guint8 accel_mods_2); static GtkWidget *cpopup_create_save_menu (GtkWidget **color_boxes, GtkWidget **labels, GtkSignalFunc callback); static void cpopup_update_saved_color (int n, double r, double g, double b, double a); static void cpopup_load_left_callback (GtkWidget *, gpointer); static void cpopup_save_left_callback (GtkWidget *, gpointer); static void cpopup_load_right_callback (GtkWidget *, gpointer); static void cpopup_save_right_callback (GtkWidget *, gpointer); static void cpopup_set_color_selection_color (GtkColorSelection *cs, double r, double g, double b, double a); static void cpopup_get_color_selection_color (GtkColorSelection *cs, double *r, double *g, double *b, double *a); static grad_segment_t *cpopup_save_selection (void); static void cpopup_free_selection (grad_segment_t *seg); static void cpopup_replace_selection (grad_segment_t *replace_seg); /* ----- */ static void cpopup_create_color_dialog (gchar *title, double r, double g, double b, double a, GtkSignalFunc color_changed_callback, GtkSignalFunc ok_callback, GtkSignalFunc cancel_callback, GtkSignalFunc delete_callback); static void cpopup_set_left_color_callback (GtkWidget *, gpointer); static void cpopup_left_color_changed (GtkWidget *, gpointer); static void cpopup_left_color_dialog_ok (GtkWidget *, gpointer); static void cpopup_left_color_dialog_cancel (GtkWidget *, gpointer); static int cpopup_left_color_dialog_delete (GtkWidget *, GdkEvent *, gpointer); static void cpopup_set_right_color_callback (GtkWidget *, gpointer); static void cpopup_right_color_changed (GtkWidget *, gpointer); static void cpopup_right_color_dialog_ok (GtkWidget *, gpointer); static void cpopup_right_color_dialog_cancel (GtkWidget *, gpointer); static int cpopup_right_color_dialog_delete (GtkWidget *, GdkEvent *, gpointer); /* ----- */ static GtkWidget *cpopup_create_blending_menu (void); static void cpopup_blending_callback (GtkWidget *, gpointer); static GtkWidget *cpopup_create_coloring_menu (void); static void cpopup_coloring_callback (GtkWidget *, gpointer); /* ----- */ static void cpopup_split_midpoint_callback (GtkWidget *, gpointer); static void cpopup_split_midpoint (grad_segment_t *lseg, grad_segment_t **newl, grad_segment_t **newr); static void cpopup_split_uniform_callback (GtkWidget *, gpointer); static void cpopup_split_uniform_scale_update (GtkAdjustment *, gpointer); static void cpopup_split_uniform_split_callback (GtkWidget *, gpointer); static void cpopup_split_uniform_cancel_callback (GtkWidget *, gpointer); static void cpopup_split_uniform (grad_segment_t *lseg, int parts, grad_segment_t **newl, grad_segment_t **newr); static void cpopup_delete_callback (GtkWidget *, gpointer); static void cpopup_recenter_callback (GtkWidget *, gpointer); static void cpopup_redistribute_callback (GtkWidget *, gpointer); /* Control popup -> Selection operations functions */ static GtkWidget * cpopup_create_sel_ops_menu (void); static void cpopup_flip_callback (GtkWidget *, gpointer); static void cpopup_replicate_callback (GtkWidget *, gpointer); static void cpopup_replicate_scale_update (GtkAdjustment *, gpointer); static void cpopup_do_replicate_callback (GtkWidget *, gpointer); static void cpopup_replicate_cancel_callback (GtkWidget *, gpointer); static void cpopup_blend_colors (GtkWidget *, gpointer); static void cpopup_blend_opacity (GtkWidget *, gpointer); /* Blend function */ static void cpopup_blend_endpoints (double r0, double g0, double b0, double a0, double r1, double g1, double b1, double a1, int blend_colors, int blend_opacity); /* Gradient functions */ static gradient_t *grad_new_gradient (void); static void grad_free_gradient (gradient_t *grad); static void grad_free_gradients (void); static void grad_load_gradient (char *filename); static void grad_save_gradient (gradient_t *grad, char *filename); static void grad_save_all (gboolean need_free); static gradient_t *grad_create_default_gradient (void); static int grad_insert_in_gradients_list (gradient_t *grad); static void grad_dump_gradient (gradient_t *grad, FILE *file); /* Segment functions */ static grad_segment_t *seg_new_segment (void); static void seg_free_segment (grad_segment_t *seg); static void seg_free_segments (grad_segment_t *seg); static grad_segment_t *seg_get_segment_at (gradient_t *grad, double pos); static grad_segment_t *seg_get_last_segment (grad_segment_t *seg); static void seg_get_closest_handle (gradient_t *grad, double pos, grad_segment_t **seg, control_drag_mode_t *handle); /* Calculation functions */ static double calc_linear_factor (double middle, double pos); static double calc_curved_factor (double middle, double pos); static double calc_sine_factor (double middle, double pos); static double calc_sphere_increasing_factor (double middle, double pos); static double calc_sphere_decreasing_factor (double middle, double pos); /* Files and paths functions */ static gchar *build_user_filename (char *name, char *path_str); /***** Global variables *****/ GSList * gradients_list = NULL; /* The list of gradients */ gint num_gradients = 0; /***** Local variables *****/ static GdkColor black; static gradient_t * curr_gradient = NULL; static gradient_t * dnd_gradient = NULL; static GradientEditor * g_editor = NULL; static gradient_t * standard_gradient = NULL; static const gchar *blending_types[] = { N_("Linear"), N_("Curved"), N_("Sinusoidal"), N_("Spherical (increasing)"), N_("Spherical (decreasing)") }; static const gchar *coloring_types[] = { N_("Plain RGB"), N_("HSV (counter-clockwise hue)"), N_("HSV (clockwise hue)") }; /* dnd stuff */ static GtkTargetEntry gradient_target_table[] = { GIMP_TARGET_GRADIENT }; static guint n_gradient_targets = (sizeof (gradient_target_table) / sizeof (gradient_target_table[0])); /***** Public functions *****/ void gradients_init (gint no_data) { if (gradients_list) gradients_free (); if (gradient_path != NULL && !no_data) datafiles_read_directories (gradient_path, grad_load_gradient, 0); gimp_context_refresh_gradients (); } void gradients_free (void) { grad_free_gradients (); } gradient_t * gradients_get_standard_gradient (void) { if (! standard_gradient) { standard_gradient = grad_create_default_gradient (); standard_gradient->name = g_strdup ("Standard"); standard_gradient->filename = NULL; standard_gradient->dirty = FALSE; } return standard_gradient; } gradient_t * gradient_list_get_gradient (GSList *list, gchar *name) { gradient_t *gradient; for (; list; list = g_slist_next (list)) { gradient = (gradient_t *) list->data; if (strcmp (gradient->name, name) == 0) return gradient; } return NULL; } gint gradient_list_get_gradient_index (GSList *list, gradient_t *gradient) { gradient_t *cmp_gradient; gint index; for (index = 0; list; list = g_slist_next (list), index++) { cmp_gradient = (gradient_t *) list->data; if (cmp_gradient == gradient) return index; } return -1; } /*****/ void gradient_get_color_at (gradient_t *gradient, gdouble pos, gdouble *r, gdouble *g, gdouble *b, gdouble *a) { double factor = 0.0; grad_segment_t *seg; double seg_len, middle; double h0, s0, v0; double h1, s1, v1; /* if there is no gradient return a totally transparent black */ if (gradient == NULL) { r = 0; g = 0; b = 0; a = 0; return; } if (pos < 0.0) pos = 0.0; else if (pos > 1.0) pos = 1.0; seg = seg_get_segment_at (gradient, pos); seg_len = seg->right - seg->left; if (seg_len < EPSILON) { middle = 0.5; pos = 0.5; } else { middle = (seg->middle - seg->left) / seg_len; pos = (pos - seg->left) / seg_len; } switch (seg->type) { case GRAD_LINEAR: factor = calc_linear_factor (middle, pos); break; case GRAD_CURVED: factor = calc_curved_factor (middle, pos); break; case GRAD_SINE: factor = calc_sine_factor (middle, pos); break; case GRAD_SPHERE_INCREASING: factor = calc_sphere_increasing_factor (middle, pos); break; case GRAD_SPHERE_DECREASING: factor = calc_sphere_decreasing_factor (middle, pos); break; default: grad_dump_gradient (gradient, stderr); gimp_fatal_error ("gradient_get_color_at(): Unknown gradient type %d", (int) seg->type); break; } /* Calculate color components */ *a = seg->a0 + (seg->a1 - seg->a0) * factor; if (seg->color == GRAD_RGB) { *r = seg->r0 + (seg->r1 - seg->r0) * factor; *g = seg->g0 + (seg->g1 - seg->g0) * factor; *b = seg->b0 + (seg->b1 - seg->b0) * factor; } else { h0 = seg->r0; s0 = seg->g0; v0 = seg->b0; h1 = seg->r1; s1 = seg->g1; v1 = seg->b1; gimp_rgb_to_hsv_double(&h0, &s0, &v0); gimp_rgb_to_hsv_double(&h1, &s1, &v1); s0 = s0 + (s1 - s0) * factor; v0 = v0 + (v1 - v0) * factor; switch (seg->color) { case GRAD_HSV_CCW: if (h0 < h1) h0 = h0 + (h1 - h0) * factor; else { h0 = h0 + (1.0 - (h0 - h1)) * factor; if (h0 > 1.0) h0 -= 1.0; } break; case GRAD_HSV_CW: if (h1 < h0) h0 = h0 - (h0 - h1) * factor; else { h0 = h0 - (1.0 - (h1 - h0)) * factor; if (h0 < 0.0) h0 += 1.0; } break; default: grad_dump_gradient (gradient, stderr); gimp_fatal_error ("gradient_get_color_at(): Unknown coloring mode %d", (int) seg->color); break; } *r = h0; *g = s0; *b = v0; gimp_hsv_to_rgb_double (r, g, b); } } /***** The main gradient editor dialog *****/ void gradient_editor_create (void) { GtkWidget *vbox; GtkWidget *hbox; GtkWidget *gvbox; GtkWidget *button; GtkWidget *frame; GtkWidget *scrolled_win; GdkColormap *colormap; gchar *titles[2]; gint column_width; gint select_pos; gint i; /* If the editor already exists, just show it */ if (g_editor) { if (!GTK_WIDGET_VISIBLE (g_editor->shell)) gtk_widget_show (g_editor->shell); else gdk_window_raise (g_editor->shell->window); return; } g_editor = g_new (GradientEditor, 1); /* Shell and main vbox */ g_editor->shell = gimp_dialog_new (_("Gradient Editor"), "gradient_editor", gimp_standard_help_func, "dialogs/gradient_editor/gradient_editor.html", GTK_WIN_POS_NONE, FALSE, TRUE, FALSE, _("Refresh"), ed_refresh_grads_callback, NULL, NULL, NULL, FALSE, FALSE, _("Close"), ed_close_callback, NULL, NULL, NULL, TRUE, TRUE, NULL); vbox = gtk_vbox_new (FALSE, 4); gtk_container_set_border_width (GTK_CONTAINER (vbox), 4); gtk_container_add (GTK_CONTAINER (GTK_DIALOG (g_editor->shell)->vbox), vbox); gtk_widget_show (vbox); /* Gradients list box */ hbox = gtk_hbox_new (FALSE, 4); gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0); gtk_widget_show (hbox); /* clist preview of gradients */ scrolled_win = gtk_scrolled_window_new (NULL, NULL); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS); gtk_box_pack_start (GTK_BOX (hbox), scrolled_win, TRUE, TRUE, 0); gtk_widget_show (scrolled_win); titles[0] = _("Gradient"); titles[1] = _("Name"); g_editor->clist = gtk_clist_new_with_titles (2, titles); gtk_clist_set_shadow_type (GTK_CLIST (g_editor->clist), GTK_SHADOW_IN); gtk_clist_set_selection_mode (GTK_CLIST (g_editor->clist), GTK_SELECTION_BROWSE); gtk_clist_set_row_height (GTK_CLIST (g_editor->clist), 18); gtk_clist_set_use_drag_icons (GTK_CLIST (g_editor->clist), FALSE); gtk_clist_column_titles_passive (GTK_CLIST (g_editor->clist)); gtk_container_add (GTK_CONTAINER (scrolled_win), g_editor->clist); column_width = MAX (50, gtk_clist_optimal_column_width (GTK_CLIST (g_editor->clist), 0)); gtk_clist_set_column_min_width (GTK_CLIST (g_editor->clist), 0, 50); gtk_clist_set_column_width (GTK_CLIST (g_editor->clist), 0, column_width); gtk_widget_show (g_editor->clist); colormap = gtk_widget_get_colormap (g_editor->clist); gdk_color_parse ("black", &black); gdk_color_alloc (colormap, &black); gtk_signal_connect (GTK_OBJECT (g_editor->clist), "button_press_event", GTK_SIGNAL_FUNC (gradient_editor_clist_button_press), NULL); gtk_signal_connect (GTK_OBJECT (g_editor->clist), "select_row", GTK_SIGNAL_FUNC (ed_list_item_update), NULL); /* dnd stuff */ gtk_drag_source_set (g_editor->clist, GDK_BUTTON1_MASK | GDK_BUTTON2_MASK, gradient_target_table, n_gradient_targets, GDK_ACTION_COPY); gimp_dnd_gradient_source_set (g_editor->clist, gradient_editor_drag_gradient, NULL); gtk_drag_dest_set (g_editor->clist, GTK_DEST_DEFAULT_ALL, gradient_target_table, n_gradient_targets, GDK_ACTION_COPY); gimp_dnd_gradient_dest_set (g_editor->clist, gradient_editor_drop_gradient, NULL); /* Frame & vbox for gradient functions */ frame = gtk_frame_new (_("Gradient Ops")); gtk_box_pack_end (GTK_BOX (hbox), frame, FALSE, FALSE, 0); gvbox = gtk_vbox_new (FALSE, 2); gtk_container_set_border_width (GTK_CONTAINER (gvbox), 4); gtk_container_add (GTK_CONTAINER (frame), gvbox); /* Buttons for gradient functions */ button = ed_create_button (_("New Gradient"), "dialogs/gradient_editor/new_gradient.html", GTK_SIGNAL_FUNC (ed_new_gradient_callback), NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_box_pack_start (GTK_BOX (gvbox), button, FALSE, FALSE, 0); gtk_widget_show (button); button = ed_create_button (_("Copy Gradient"), "dialogs/gradient_editor/copy_gradient.html", GTK_SIGNAL_FUNC (ed_copy_gradient_callback), NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_box_pack_start (GTK_BOX (gvbox), button, FALSE, FALSE, 0); gtk_widget_show (button); button = ed_create_button (_("Delete Gradient"), "dialogs/gradient_editor/delete_gradient.html", GTK_SIGNAL_FUNC (ed_delete_gradient_callback), NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_box_pack_start (GTK_BOX (gvbox), button, FALSE, FALSE, 0); gtk_widget_show (button); button = ed_create_button (_("Rename Gradient"), "dialogs/gradient_editor/rename_gradient.html", GTK_SIGNAL_FUNC (ed_rename_gradient_callback), NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_box_pack_start (GTK_BOX (gvbox), button, FALSE, FALSE, 0); gtk_widget_show (button); button = ed_create_button (_("Save as POV-Ray"), "dialogs/gradient_editor/save_as_pov_ray.html", GTK_SIGNAL_FUNC (ed_save_pov_callback), NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_box_pack_start (GTK_BOX (gvbox), button, FALSE, FALSE, 0); gtk_widget_show (button); gtk_widget_show (gvbox); gtk_widget_show (frame); /* Horizontal box for zoom controls, scrollbar and instant update toggle */ hbox = gtk_hbox_new (FALSE, 4); gtk_container_set_border_width (GTK_CONTAINER (hbox), 0); gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); gtk_widget_show (hbox); /* Zoom all button */ button = ed_create_button (_("Zoom all"), NULL, GTK_SIGNAL_FUNC (ed_zoom_all_callback), g_editor); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0); gtk_widget_show (button); /* + and - buttons */ gtk_widget_realize (g_editor->shell); button = gimp_pixmap_button_new (zoom_in_xpm, NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_signal_connect (GTK_OBJECT (button), "clicked", GTK_SIGNAL_FUNC (ed_zoom_in_callback), (gpointer) g_editor); gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0); gtk_widget_show (button); button = gimp_pixmap_button_new (zoom_out_xpm, NULL); GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT); gtk_signal_connect (GTK_OBJECT (button), "clicked", GTK_SIGNAL_FUNC (ed_zoom_out_callback), (gpointer) g_editor); gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0); gtk_widget_show (button); /* Scrollbar */ g_editor->zoom_factor = 1; g_editor->scroll_data = gtk_adjustment_new (0.0, 0.0, 1.0, 1.0 * GRAD_SCROLLBAR_STEP_SIZE, 1.0 * GRAD_SCROLLBAR_PAGE_SIZE, 1.0); gtk_signal_connect (g_editor->scroll_data, "value_changed", GTK_SIGNAL_FUNC (ed_scrollbar_update), g_editor); gtk_signal_connect (g_editor->scroll_data, "changed", GTK_SIGNAL_FUNC (ed_scrollbar_update), g_editor); g_editor->scrollbar = gtk_hscrollbar_new (GTK_ADJUSTMENT (g_editor->scroll_data)); gtk_range_set_update_policy (GTK_RANGE (g_editor->scrollbar), GTK_UPDATE_CONTINUOUS); gtk_box_pack_start (GTK_BOX (hbox), g_editor->scrollbar, TRUE, TRUE, 0); gtk_widget_hide (g_editor->scrollbar); /* Instant update toggle */ g_editor->instant_update = TRUE; button = gtk_check_button_new_with_label (_("Instant update")); gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0); gtk_signal_connect (GTK_OBJECT (button), "toggled", GTK_SIGNAL_FUNC (ed_instant_update_update), g_editor); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE); gtk_widget_show (button); /* Frame for gradient preview and gradient control */ frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); gtk_widget_show (frame); gvbox = gtk_vbox_new (FALSE, 0); gtk_container_add (GTK_CONTAINER (frame), gvbox); gtk_widget_show (gvbox); /* Gradient preview */ g_editor->preview_rows[0] = NULL; g_editor->preview_rows[1] = NULL; g_editor->preview_last_x = 0; g_editor->preview_button_down = FALSE; g_editor->preview = gtk_preview_new (GTK_PREVIEW_COLOR); gtk_preview_set_dither (GTK_PREVIEW (g_editor->preview), GDK_RGB_DITHER_MAX); gtk_preview_size (GTK_PREVIEW (g_editor->preview), GRAD_PREVIEW_WIDTH, GRAD_PREVIEW_HEIGHT); /* Enable auto-resizing of the preview but ensure a minimal size */ gtk_widget_set_usize (g_editor->preview, GRAD_PREVIEW_WIDTH, GRAD_PREVIEW_HEIGHT); gtk_preview_set_expand (GTK_PREVIEW (g_editor->preview), TRUE); gtk_widget_set_events (g_editor->preview, GRAD_PREVIEW_EVENT_MASK); gtk_signal_connect (GTK_OBJECT(g_editor->preview), "event", GTK_SIGNAL_FUNC (prev_events), g_editor); gtk_drag_dest_set (g_editor->preview, GTK_DEST_DEFAULT_HIGHLIGHT | GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP, gradient_target_table, n_gradient_targets, GDK_ACTION_COPY); gimp_dnd_gradient_dest_set (g_editor->preview, gradient_editor_drop_gradient, NULL); gtk_box_pack_start (GTK_BOX (gvbox), g_editor->preview, TRUE, TRUE, 0); gtk_widget_show (g_editor->preview); /* Gradient control */ g_editor->control_pixmap = NULL; g_editor->control_drag_segment = NULL; g_editor->control_sel_l = NULL; g_editor->control_sel_r = NULL; g_editor->control_drag_mode = GRAD_DRAG_NONE; g_editor->control_click_time = 0; g_editor->control_compress = FALSE; g_editor->control_last_x = 0; g_editor->control_last_gx = 0.0; g_editor->control_orig_pos = 0.0; g_editor->control_main_popup = NULL; g_editor->control_blending_label = NULL; g_editor->control_coloring_label = NULL; g_editor->control_splitm_label = NULL; g_editor->control_splitu_label = NULL; g_editor->control_delete_menu_item = NULL; g_editor->control_delete_label = NULL; g_editor->control_recenter_label = NULL; g_editor->control_redistribute_label = NULL; g_editor->control_flip_label = NULL; g_editor->control_replicate_label = NULL; g_editor->control_blend_colors_menu_item = NULL; g_editor->control_blend_opacity_menu_item = NULL; g_editor->control_left_load_popup = NULL; g_editor->control_left_save_popup = NULL; g_editor->control_right_load_popup = NULL; g_editor->control_right_save_popup = NULL; g_editor->control_blending_popup = NULL; g_editor->control_coloring_popup = NULL; g_editor->control_sel_ops_popup = NULL; g_editor->accel_group = NULL; for (i = 0; i < (sizeof (g_editor->control_blending_items) / sizeof (g_editor->control_blending_items[0])); i++) g_editor->control_blending_items[i] = NULL; for (i = 0; i < (sizeof (g_editor->control_coloring_items) / sizeof (g_editor->control_coloring_items[0])); i++) g_editor->control_coloring_items[i] = NULL; g_editor->control = gtk_drawing_area_new (); gtk_drawing_area_size (GTK_DRAWING_AREA (g_editor->control), GRAD_PREVIEW_WIDTH, GRAD_CONTROL_HEIGHT); gtk_widget_set_events (g_editor->control, GRAD_CONTROL_EVENT_MASK); gtk_signal_connect (GTK_OBJECT (g_editor->control), "event", (GdkEventFunc) control_events, g_editor); gtk_box_pack_start (GTK_BOX (gvbox), g_editor->control, TRUE, TRUE, 0); gtk_widget_show (g_editor->control); /* Hint bar and close button */ g_editor->hint_label = gtk_label_new (""); gtk_misc_set_alignment (GTK_MISC (g_editor->hint_label), 0.0, 0.5); gtk_box_pack_start (GTK_BOX (vbox), g_editor->hint_label, FALSE, FALSE, 0); gtk_widget_show (g_editor->hint_label); /* Initialize other data */ g_editor->left_color_preview = NULL; g_editor->left_saved_segments = NULL; g_editor->left_saved_dirty = FALSE; g_editor->right_color_preview = NULL; g_editor->right_saved_segments = NULL; g_editor->right_saved_dirty = FALSE; ed_initialize_saved_colors (); cpopup_create_main_menu (); if (gradients_list) { curr_gradient = dnd_gradient = (gradient_t *) gradients_list->data; } else { gint pos; curr_gradient = dnd_gradient = grad_create_default_gradient (); curr_gradient->name = g_strdup (_("Default")); curr_gradient->filename = build_user_filename (curr_gradient->name, gradient_path); curr_gradient->dirty = FALSE; pos = grad_insert_in_gradients_list (curr_gradient); gradient_select_insert_all (pos, curr_gradient); gimp_context_refresh_gradients (); } /* Show everything */ g_editor->gc = gdk_gc_new (g_editor->shell->window); select_pos = gradient_clist_init (g_editor->shell, g_editor->gc, g_editor->clist, curr_gradient); gtk_widget_show (g_editor->shell); if (select_pos != -1) gtk_clist_moveto (GTK_CLIST (g_editor->clist), select_pos, 0, 0.0, 0.0); } void gradient_editor_free (void) { } gboolean gradient_editor_set_gradient (gradient_t *gradient) { gint n; n = gradient_list_get_gradient_index (gradients_list, gradient); if (n < 0) return FALSE; if (g_editor) { gtk_clist_select_row (GTK_CLIST (g_editor->clist), n, -1); gtk_clist_moveto (GTK_CLIST (g_editor->clist), n, 0, 0.5, 0.0); } else { curr_gradient = dnd_gradient = gradient; } return TRUE; } /***** Gradient editor functions *****/ static gint gradient_editor_clist_button_press (GtkWidget *widget, GdkEventButton *bevent, gpointer data) { if (bevent->button == 2) { GSList *list = NULL; gint row; gint column; gtk_clist_get_selection_info (GTK_CLIST (g_editor->clist), bevent->x, bevent->y, &row, &column); if (gradients_list) list = g_slist_nth (gradients_list, row); if (list) dnd_gradient = (gradient_t *) list->data; else dnd_gradient = NULL; return TRUE; } return FALSE; } static gradient_t * gradient_editor_drag_gradient (GtkWidget *widget, gpointer data) { return dnd_gradient; } static void gradient_editor_drop_gradient (GtkWidget *widget, gradient_t *gradient, gpointer data) { gradient_editor_set_gradient (gradient); } /*****/ static void ed_fetch_foreground (double *fg_r, double *fg_g, double *fg_b, double *fg_a) { guchar r, g, b; gimp_context_get_foreground (gimp_context_get_user (), &r, &g, &b); *fg_r = (double) r / 255.0; *fg_g = (double) g / 255.0; *fg_b = (double) b / 255.0; *fg_a = 1.0; /* opacity 100 % */ } /*****/ static void ed_update_editor (int flags) { if (flags & GRAD_UPDATE_GRADIENT) { prev_update (TRUE); gradient_update (); } if (flags & GRAD_UPDATE_PREVIEW) prev_update (TRUE); if (flags & GRAD_UPDATE_CONTROL) control_update (FALSE); if (flags & GRAD_RESET_CONTROL) control_update (TRUE); } /*****/ static GtkWidget * ed_create_button (gchar *label, gchar *help_data, GtkSignalFunc signal_func, gpointer data) { GtkWidget *button; button = gtk_button_new_with_label (label); gtk_misc_set_padding (GTK_MISC (GTK_BIN (button)->child), 2, 0); gtk_widget_show (button); if (signal_func != NULL) gtk_signal_connect (GTK_OBJECT (button), "clicked", signal_func, data); if (help_data) gimp_help_set_help_data (button, NULL, help_data); return button; } /*****/ static void ed_set_hint (gchar *str) { gtk_label_set_text (GTK_LABEL (g_editor->hint_label), str); /*gdk_flush();*/ } /*****/ static void gradient_clist_fill_preview (gradient_t *gradient, guchar *buf, gint width, gint height, gdouble left, gdouble right) { guchar *p0, *p1,*even,*odd; gint x, y; gdouble dx, cur_x; gdouble r, g, b, a; gdouble c0, c1; dx = (right - left) / (width - 1); cur_x = left; p0 = even = g_malloc (width * 3); p1 = odd = g_malloc (width * 3); /* Create lines to fill the image */ for (x = 0; x < width; x++) { gradient_get_color_at (gradient, cur_x, &r, &g, &b, &a); if ((x / GIMP_CHECK_SIZE_SM) & 1) { c0 = GIMP_CHECK_LIGHT; c1 = GIMP_CHECK_DARK; } else { c0 = GIMP_CHECK_DARK; c1 = GIMP_CHECK_LIGHT; } *p0++ = (c0 + (r - c0) * a) * 255.0; *p0++ = (c0 + (g - c0) * a) * 255.0; *p0++ = (c0 + (b - c0) * a) * 255.0; *p1++ = (c1 + (r - c1) * a) * 255.0; *p1++ = (c1 + (g - c1) * a) * 255.0; *p1++ = (c1 + (b - c1) * a) * 255.0; cur_x += dx; } for (y = 0; y < height; y++) { if ((y / GIMP_CHECK_SIZE_SM) & 1) { memcpy (buf + (width * y * 3), odd, width * 3); } else { memcpy (buf + (width * y * 3), even, width * 3); } } g_free (even); g_free (odd); } static void gradient_clist_draw_small_preview (GdkGC *gc, GtkWidget *clist, gradient_t *gradient, gint pos) { guchar rgb_buf[48 * 16 * 3]; gradient_clist_fill_preview (gradient, rgb_buf, 48, 16, 0.0, 1.0); gdk_draw_rgb_image (gradient->pixmap, gc, 0, 0, 48, 16, GDK_RGB_DITHER_NORMAL, rgb_buf, 48 * 3); gdk_gc_set_foreground (gc, &black); gdk_draw_rectangle (gradient->pixmap, gc, FALSE, 0, 0, 47, 15); gtk_clist_set_text (GTK_CLIST (clist), pos, 1, gradient->name); } gint gradient_clist_init (GtkWidget *shell, GdkGC *gc, GtkWidget *clist, gradient_t *sel_gradient) { GSList *list; gradient_t *gradient; gint n; gint select_pos = -1; if (sel_gradient == NULL) sel_gradient = curr_gradient; gtk_clist_freeze (GTK_CLIST (clist)); for (list = gradients_list, n = 0; list; list = g_slist_next (list), n++) { gradient = (gradient_t *) list->data; if (gradient == sel_gradient) { gradient_clist_insert (shell, gc, clist, gradient, n, TRUE); select_pos = n; } else { gradient_clist_insert (shell, gc, clist, gradient, n, FALSE); } } gtk_clist_thaw (GTK_CLIST (clist)); return select_pos; } void gradient_clist_insert (GtkWidget *shell, GdkGC *gc, GtkWidget *clist, gradient_t *gradient, gint pos, gboolean select) { gchar *string[2]; string[0] = NULL; string[1] = gradient->name; gtk_clist_insert (GTK_CLIST (clist), pos, string); if (gradient->pixmap == NULL) { gradient->pixmap = gdk_pixmap_new (shell->window, 48, 16, gtk_widget_get_visual (shell)->depth); } gradient_clist_draw_small_preview (gc, clist, gradient, pos); gtk_clist_set_pixmap (GTK_CLIST (clist), pos, 0, gradient->pixmap, NULL); if (select) { gtk_clist_select_row (GTK_CLIST (clist), pos, -1); gtk_clist_moveto (GTK_CLIST (clist), pos, 0, 0.5, 0.0); } } /*****/ static void ed_list_item_update (GtkWidget *widget, gint row, gint column, GdkEventButton *event, gpointer data) { /* Update current gradient */ GSList* tmp = g_slist_nth (gradients_list,row); curr_gradient = dnd_gradient = (gradient_t *)(tmp->data); ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL); } /*****/ static void ed_initialize_saved_colors (void) { int i; for (i = 0; i < (GRAD_NUM_COLORS + 3); i++) { g_editor->left_load_color_boxes[i] = NULL; g_editor->left_load_labels[i] = NULL; g_editor->right_load_color_boxes[i] = NULL; g_editor->right_load_labels[i] = NULL; } for (i = 0; i < GRAD_NUM_COLORS; i++) { g_editor->left_save_color_boxes[i] = NULL; g_editor->left_save_labels[i] = NULL; g_editor->right_save_color_boxes[i] = NULL; g_editor->right_save_labels[i] = NULL; } g_editor->saved_colors[0].r = 0.0; /* Black */ g_editor->saved_colors[0].g = 0.0; g_editor->saved_colors[0].b = 0.0; g_editor->saved_colors[0].a = 1.0; g_editor->saved_colors[1].r = 0.5; /* 50% Gray */ g_editor->saved_colors[1].g = 0.5; g_editor->saved_colors[1].b = 0.5; g_editor->saved_colors[1].a = 1.0; g_editor->saved_colors[2].r = 1.0; /* White */ g_editor->saved_colors[2].g = 1.0; g_editor->saved_colors[2].b = 1.0; g_editor->saved_colors[2].a = 1.0; g_editor->saved_colors[3].r = 0.0; /* Clear */ g_editor->saved_colors[3].g = 0.0; g_editor->saved_colors[3].b = 0.0; g_editor->saved_colors[3].a = 0.0; g_editor->saved_colors[4].r = 1.0; /* Red */ g_editor->saved_colors[4].g = 0.0; g_editor->saved_colors[4].b = 0.0; g_editor->saved_colors[4].a = 1.0; g_editor->saved_colors[5].r = 1.0; /* Yellow */ g_editor->saved_colors[5].g = 1.0; g_editor->saved_colors[5].b = 0.0; g_editor->saved_colors[5].a = 1.0; g_editor->saved_colors[6].r = 0.0; /* Green */ g_editor->saved_colors[6].g = 1.0; g_editor->saved_colors[6].b = 0.0; g_editor->saved_colors[6].a = 1.0; g_editor->saved_colors[7].r = 0.0; /* Cyan */ g_editor->saved_colors[7].g = 1.0; g_editor->saved_colors[7].b = 1.0; g_editor->saved_colors[7].a = 1.0; g_editor->saved_colors[8].r = 0.0; /* Blue */ g_editor->saved_colors[8].g = 0.0; g_editor->saved_colors[8].b = 1.0; g_editor->saved_colors[8].a = 1.0; g_editor->saved_colors[9].r = 1.0; /* Magenta */ g_editor->saved_colors[9].g = 0.0; g_editor->saved_colors[9].b = 1.0; g_editor->saved_colors[9].a = 1.0; } /***** Main gradient editor dialog callbacks *****/ /***** the "new gradient" dialog functions *****/ static void ed_new_gradient_callback (GtkWidget *widget, gpointer data) { GtkWidget *qbox; qbox = gimp_query_string_box (_("New gradient"), gimp_standard_help_func, "dialogs/gradient_editor/new_gradient.html", _("Enter a name for the new gradient"), _("untitled"), NULL, NULL, ed_do_new_gradient_callback, NULL); gtk_widget_show (qbox); } static void ed_do_new_gradient_callback (GtkWidget *widget, gchar *gradient_name, gpointer data) { gradient_t *grad; gint pos; if (!gradient_name) { g_warning ("received NULL in call_data"); return; } grad = grad_create_default_gradient (); grad->name = gradient_name; /* We don't need to copy since this memory is ours */ grad->dirty = TRUE; grad->filename = build_user_filename (grad->name, gradient_path); /* Put new gradient in list */ pos = grad_insert_in_gradients_list (grad); gtk_clist_freeze (GTK_CLIST (g_editor->clist)); gradient_clist_insert (g_editor->shell, g_editor->gc, g_editor->clist, grad, pos, TRUE); gtk_clist_thaw (GTK_CLIST (g_editor->clist)); gtk_clist_moveto (GTK_CLIST (g_editor->clist), pos, 0, 0.5, 0.0); curr_gradient = dnd_gradient = grad; ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL); gradient_select_insert_all (pos, grad); } /***** The "copy gradient" dialog functions *****/ static void ed_copy_gradient_callback (GtkWidget *widget, gpointer data) { GtkWidget *qbox; gchar *name; if (curr_gradient == NULL) return; name = g_strdup_printf (_("%s copy"), curr_gradient->name); qbox = gimp_query_string_box (_("Copy gradient"), gimp_standard_help_func, "dialogs/gradient_editor/copy_gradient.html", _("Enter a name for the copied gradient"), name, NULL, NULL, ed_do_copy_gradient_callback, NULL); gtk_widget_show (qbox); g_free (name); } static void ed_do_copy_gradient_callback (GtkWidget *widget, gchar *gradient_name, gpointer data) { gradient_t *grad; gint pos; grad_segment_t *head, *prev, *cur, *orig; if (!gradient_name) { g_warning ("received NULL in call_data"); return; } /* Copy current gradient */ grad = grad_new_gradient (); grad->name = gradient_name; /* We don't need to copy since this memory is ours */ grad->dirty = TRUE; grad->filename = build_user_filename (grad->name, gradient_path); prev = NULL; orig = curr_gradient->segments; head = NULL; while (orig) { cur = seg_new_segment (); *cur = *orig; /* Copy everything */ cur->prev = prev; cur->next = NULL; if (prev) prev->next = cur; else head = cur; /* Remember head */ prev = cur; orig = orig->next; } grad->segments = head; /* Put new gradient in list */ pos = grad_insert_in_gradients_list (grad); gtk_clist_freeze (GTK_CLIST (g_editor->clist)); gradient_clist_insert (g_editor->shell, g_editor->gc, g_editor->clist, grad, pos, TRUE); gtk_clist_thaw (GTK_CLIST (g_editor->clist)); curr_gradient = dnd_gradient = grad; ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL); gradient_select_insert_all (pos, grad); } /***** The "rename gradient" dialog functions *****/ static void ed_rename_gradient_callback (GtkWidget *widget, gpointer data) { GtkWidget *qbox; if (curr_gradient == NULL) return; qbox = gimp_query_string_box (_("Rename gradient"), gimp_standard_help_func, "dialogs/gradient_editor/rename_gradient.html", _("Enter a new name for the gradient"), curr_gradient->name, NULL, NULL, ed_do_rename_gradient_callback, curr_gradient); gtk_widget_show (qbox); } static void ed_do_rename_gradient_callback (GtkWidget *widget, gchar *gradient_name, gpointer data) { gradient_t *grad = (gradient_t *) data; gradient_t *grad_list = NULL; GSList *tmp; gint n; if (!gradient_name) { g_warning ("received NULL in call_data"); return; } for (tmp = gradients_list, n = 0; tmp; tmp = g_slist_next (tmp), n++) { grad_list = tmp->data; if (grad_list == grad) break; } if (!grad || !grad_list) { g_warning ("can't find gradient to rename"); return; } g_free (grad->name); grad->name = gradient_name; /* We don't need to copy since this memory is ours */ grad->dirty = TRUE; /* Delete file and free gradient */ unlink (grad->filename); g_free (grad->filename); grad->filename = build_user_filename (grad->name, gradient_path); gtk_clist_set_text (GTK_CLIST (g_editor->clist), n, 1, grad->name); ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL); gradient_select_rename_all (n, grad); gimp_context_update_gradients (grad); } /***** The "delete gradient" dialog functions *****/ static void ed_delete_gradient_callback (GtkWidget *widget, gpointer data) { GtkWidget *dialog; gchar *str; if (num_gradients <= 1) return; gtk_widget_set_sensitive (g_editor->shell, FALSE); str = g_strdup_printf (_("Are you sure you want to delete\n" "\"%s\" from the list and from disk?"), curr_gradient->name); dialog = gimp_query_boolean_box (_("Delete Gradient"), gimp_standard_help_func, "dialogs/gradient_editor/delete_gradient.html", FALSE, str, _("Delete"), _("Cancel"), NULL, NULL, ed_do_delete_gradient_callback, NULL); g_free (str); gtk_widget_show (dialog); } static void ed_do_delete_gradient_callback (GtkWidget *widget, gboolean delete, gpointer data) { GSList *tmp; gint n; gint real_pos; gradient_t *gradient; gtk_widget_set_sensitive (g_editor->shell, TRUE); if (!delete) return; /* See which gradient we will have to select once the current one is deleted */ real_pos = 0; for (n = 0, tmp = gradients_list; tmp; tmp = g_slist_next (tmp), n++) { gradient = tmp->data; if (gradient == curr_gradient) { real_pos = n; if (tmp->next == NULL) n--; /* Will have to select the *previous* one */ break; /* We found the one we want */ } } if (tmp == NULL) gimp_fatal_error ("Could not find gradient to delete!"); /* Delete gradient from gradients list */ gradients_list = g_slist_remove (gradients_list, curr_gradient); /* Delete file and free gradient */ unlink (curr_gradient->filename); grad_free_gradient (curr_gradient); /* Delete gradient from listbox */ gtk_clist_remove (GTK_CLIST (g_editor->clist), real_pos); /* Select new gradient */ curr_gradient = g_slist_nth (gradients_list, n)->data; gtk_clist_select_row (GTK_CLIST (g_editor->clist), n, -1); gtk_clist_moveto (GTK_CLIST (g_editor->clist), n, 0, 0.5, 0.0); /* Update! */ ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL); gradient_select_delete_all (real_pos); gimp_context_refresh_gradients (); } /***** The "save as pov" dialog functions *****/ static void ed_save_pov_callback (GtkWidget *widget, gpointer data) { GtkWidget *window; if (curr_gradient == NULL) return; window = gtk_file_selection_new (_("Save as POV-Ray")); gtk_window_set_wmclass (GTK_WINDOW (window), "save_gradient", "Gimp"); gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_MOUSE); gtk_container_set_border_width (GTK_CONTAINER (window), 2); gtk_container_set_border_width (GTK_CONTAINER (GTK_FILE_SELECTION (window)->button_area), 2); gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (window)->ok_button), "clicked", (GtkSignalFunc) ed_do_save_pov_callback, window); gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (window)->cancel_button), "clicked", (GtkSignalFunc) ed_cancel_save_pov_callback, window); gtk_signal_connect (GTK_OBJECT (window), "delete_event", (GdkEventFunc) ed_delete_save_pov_callback, window); /* Connect the "F1" help key */ gimp_help_connect_help_accel (window, gimp_standard_help_func, "dialogs/gradient_editor/save_as_pov_ray.html"); gtk_widget_show (window); gtk_widget_set_sensitive (g_editor->shell, FALSE); } static void ed_do_save_pov_callback (GtkWidget *widget, gpointer data) { gchar *filename; FILE *file; grad_segment_t *seg; filename = gtk_file_selection_get_filename (GTK_FILE_SELECTION (data)); file = fopen (filename, "wb"); if (!file) g_message ("Could not open \"%s\"", filename); else { fprintf (file, "/* color_map file created by the GIMP */\n"); fprintf (file, "/* http://www.gimp.org/ */\n"); fprintf (file, "color_map {\n"); for (seg = curr_gradient->segments; seg; seg = seg->next) { /* Left */ fprintf (file, "\t[%f color rgbt <%f, %f, %f, %f>]\n", seg->left, seg->r0, seg->g0, seg->b0, 1.0 - seg->a0); /* Middle */ fprintf (file, "\t[%f color rgbt <%f, %f, %f, %f>]\n", seg->middle, (seg->r0 + seg->r1) / 2.0, (seg->g0 + seg->g1) / 2.0, (seg->b0 + seg->b1) / 2.0, 1.0 - (seg->a0 + seg->a1) / 2.0); /* Right */ fprintf (file, "\t[%f color rgbt <%f, %f, %f, %f>]\n", seg->right, seg->r1, seg->g1, seg->b1, 1.0 - seg->a1); } fprintf (file, "} /* color_map */\n"); fclose (file); } gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static void ed_cancel_save_pov_callback (GtkWidget *widget, gpointer data) { gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static gint ed_delete_save_pov_callback (GtkWidget *widget, GdkEvent *event, gpointer data) { ed_cancel_save_pov_callback (widget, data); return TRUE; } /***** The main dialog action area button callbacks *****/ static void ed_refresh_grads_callback (GtkWidget *widget, gpointer data) { gint select_pos; gtk_clist_freeze (GTK_CLIST (g_editor->clist)); gtk_clist_clear (GTK_CLIST (g_editor->clist)); gtk_clist_thaw (GTK_CLIST (g_editor->clist)); gradient_select_free_all (); gradients_init (FALSE); if (gradients_list) { curr_gradient = dnd_gradient = (gradient_t *) gradients_list->data; } else { curr_gradient = dnd_gradient = grad_create_default_gradient (); curr_gradient->name = g_strdup (_("Default")); curr_gradient->filename = build_user_filename (curr_gradient->name, gradient_path); curr_gradient->dirty = FALSE; grad_insert_in_gradients_list (curr_gradient); gimp_context_refresh_gradients (); } select_pos = gradient_clist_init (g_editor->shell, g_editor->gc, g_editor->clist, curr_gradient); ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL); if (select_pos != -1) gtk_clist_moveto (GTK_CLIST (g_editor->clist), select_pos, 0, 0.5, 0.0); gradient_select_refill_all (); } static void ed_close_callback (GtkWidget *widget, gpointer data) { if (GTK_WIDGET_VISIBLE (g_editor->shell)) gtk_widget_hide (g_editor->shell); } /***** Zoom, scrollbar & instant update callbacks *****/ static void ed_scrollbar_update (GtkAdjustment *adjustment, gpointer data) { gchar *str; str = g_strdup_printf (_("Zoom factor: %d:1 Displaying [%0.6f, %0.6f]"), g_editor->zoom_factor, adjustment->value, adjustment->value + adjustment->page_size); ed_set_hint (str); g_free (str); ed_update_editor (GRAD_UPDATE_PREVIEW | GRAD_UPDATE_CONTROL); } static void ed_zoom_all_callback (GtkWidget *widget, gpointer data) { GtkAdjustment *adjustment; adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); g_editor->zoom_factor = 1; gtk_widget_hide (g_editor->scrollbar); adjustment->value = 0.0; adjustment->page_size = 1.0; adjustment->step_increment = 1.0 * GRAD_SCROLLBAR_STEP_SIZE; adjustment->page_increment = 1.0 * GRAD_SCROLLBAR_PAGE_SIZE; gtk_signal_emit_by_name (g_editor->scroll_data, "changed"); } static void ed_zoom_out_callback (GtkWidget *widget, gpointer data) { GtkAdjustment *adjustment; double old_value, value; double old_page_size, page_size; if (g_editor->zoom_factor <= 1) return; adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); old_value = adjustment->value; old_page_size = adjustment->page_size; g_editor->zoom_factor--; if (g_editor->zoom_factor==1) gtk_widget_hide (g_editor->scrollbar); else gtk_widget_show (g_editor->scrollbar); page_size = 1.0 / g_editor->zoom_factor; value = old_value - (page_size - old_page_size) / 2.0; if (value < 0.0) value = 0.0; else if ((value + page_size) > 1.0) value = 1.0 - page_size; adjustment->value = value; adjustment->page_size = page_size; adjustment->step_increment = page_size * GRAD_SCROLLBAR_STEP_SIZE; adjustment->page_increment = page_size * GRAD_SCROLLBAR_PAGE_SIZE; gtk_signal_emit_by_name (g_editor->scroll_data, "changed"); } static void ed_zoom_in_callback (GtkWidget *widget, gpointer data) { GtkAdjustment *adjustment; double old_value; double old_page_size, page_size; adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); old_value = adjustment->value; old_page_size = adjustment->page_size; g_editor->zoom_factor++; page_size = 1.0 / g_editor->zoom_factor; adjustment->value = old_value + (old_page_size - page_size) / 2.0; adjustment->page_size = page_size; adjustment->step_increment = page_size * GRAD_SCROLLBAR_STEP_SIZE; adjustment->page_increment = page_size * GRAD_SCROLLBAR_PAGE_SIZE; gtk_signal_emit_by_name (g_editor->scroll_data, "changed"); gtk_widget_show (g_editor->scrollbar); } static void ed_instant_update_update (GtkWidget *widget, gpointer data) { if (GTK_TOGGLE_BUTTON (widget)->active) { g_editor->instant_update = TRUE; gtk_range_set_update_policy (GTK_RANGE (g_editor->scrollbar), GTK_UPDATE_CONTINUOUS); } else { g_editor->instant_update = FALSE; gtk_range_set_update_policy (GTK_RANGE (g_editor->scrollbar), GTK_UPDATE_DELAYED); } } /***** Gradient preview functions *****/ static gint prev_events (GtkWidget *widget, GdkEvent *event, gpointer data) { gint x, y; GdkEventButton *bevent; GdkEventMotion *mevent; /* ignore events when no gradient is present */ if (curr_gradient == NULL) return FALSE; switch (event->type) { case GDK_EXPOSE: prev_update (FALSE); break; case GDK_LEAVE_NOTIFY: ed_set_hint(""); break; case GDK_MOTION_NOTIFY: gtk_widget_get_pointer (g_editor->preview, &x, &y); mevent = (GdkEventMotion *) event; if (x != g_editor->preview_last_x) { g_editor->preview_last_x = x; if (g_editor->preview_button_down) { if (mevent->state & GDK_CONTROL_MASK) prev_set_background (x); else prev_set_foreground (x); } else prev_set_hint (x); } break; case GDK_BUTTON_PRESS: gtk_widget_get_pointer (g_editor->preview, &x, &y); bevent = (GdkEventButton *) event; switch (bevent->button) { case 1: g_editor->preview_last_x = x; g_editor->preview_button_down = TRUE; if (bevent->state & GDK_CONTROL_MASK) prev_set_background (x); else prev_set_foreground (x); break; case 3: cpopup_do_popup (); break; /* wheelmouse support */ case 4: { GtkAdjustment *adj = GTK_ADJUSTMENT (g_editor->scroll_data); gfloat new_value = adj->value - adj->page_increment / 2; new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size); gtk_adjustment_set_value (adj, new_value); } break; case 5: { GtkAdjustment *adj = GTK_ADJUSTMENT (g_editor->scroll_data); gfloat new_value = adj->value + adj->page_increment / 2; new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size); gtk_adjustment_set_value (adj, new_value); } break; default: break; } break; case GDK_BUTTON_RELEASE: if (g_editor->preview_button_down) { gtk_widget_get_pointer (g_editor->preview, &x, &y); bevent = (GdkEventButton *) event; g_editor->preview_last_x = x; g_editor->preview_button_down = FALSE; if (bevent->state & GDK_CONTROL_MASK) prev_set_background (x); else prev_set_foreground (x); break; } break; default: break; } return FALSE; } /*****/ static void prev_set_hint (gint x) { gdouble xpos; gdouble r, g, b, a; gdouble h, s, v; gchar *str; xpos = control_calc_g_pos (x); gradient_get_color_at (curr_gradient, xpos, &r, &g, &b, &a); h = r; s = g; v = b; gimp_rgb_to_hsv_double (&h, &s, &v); str = g_strdup_printf (_("Position: %0.6f " "RGB (%0.3f, %0.3f, %0.3f) " "HSV (%0.3f, %0.3f, %0.3f) " "Opacity: %0.3f"), xpos, r, g, b, h * 360.0, s, v, a); ed_set_hint (str); g_free (str); } /*****/ static void prev_set_foreground (gint x) { gdouble xpos; gdouble r, g, b, a; gchar *str; xpos = control_calc_g_pos (x); gradient_get_color_at (curr_gradient, xpos, &r, &g, &b, &a); gimp_context_set_foreground (gimp_context_get_user (), r * 255.0, g * 255.0, b * 255.0); str = g_strdup_printf (_("Foreground color set to RGB (%d, %d, %d) <-> " "(%0.3f, %0.3f, %0.3f)"), (int) (r * 255.0), (int) (g * 255.0), (int) (b * 255.0), r, g, b); ed_set_hint (str); g_free (str); } static void prev_set_background (gint x) { gdouble xpos; gdouble r, g, b, a; gchar *str; xpos = control_calc_g_pos (x); gradient_get_color_at (curr_gradient, xpos, &r, &g, &b, &a); gimp_context_set_background (gimp_context_get_user (), r * 255.0, g * 255.0, b * 255.0); str = g_strdup_printf (_("Background color to RGB (%d, %d, %d) <-> " "(%0.3f, %0.3f, %0.3f)"), (int) (r * 255.0), (int) (g * 255.0), (int) (b * 255.0), r, g, b); ed_set_hint (str); g_free (str); } /*****/ static void gradient_update (void) { gint row; row = gradient_list_get_gradient_index (gradients_list, curr_gradient); gradient_clist_draw_small_preview (g_editor->gc, g_editor->clist, curr_gradient, row); /* Update all selectors that are on screen */ gradient_select_update_all (row, curr_gradient); /* Update all contexts */ gimp_context_update_gradients (curr_gradient); } static void prev_update (gboolean recalculate) { long rowsiz; GtkAdjustment *adjustment; guint16 width, height; GSList *tmp; int n; gradient_t *g; static gradient_t *last_grad = NULL; static guint16 last_width = 0; static guint16 last_height = 0; /* We only update if we can draw to the widget and a gradient is present */ if (curr_gradient == NULL) return; if (!GTK_WIDGET_DRAWABLE (g_editor->preview)) return; /* See whether we have to re-create the preview widget * (note that the preview automatically follows the size of it's container) */ width = g_editor->preview->allocation.width; height = g_editor->preview->allocation.height; if (!g_editor->preview_rows[0] || !g_editor->preview_rows[1] || (width != last_width) || (height != last_height)) { if (g_editor->preview_rows[0]) g_free (g_editor->preview_rows[0]); if (g_editor->preview_rows[1]) g_free (g_editor->preview_rows[1]); rowsiz = width * 3 * sizeof (guchar); g_editor->preview_rows[0] = g_malloc (rowsiz); g_editor->preview_rows[1] = g_malloc (rowsiz); recalculate = TRUE; /* Force recalculation */ } last_width = width; last_height = height; /* Have to redraw? */ if (recalculate) { adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); prev_fill_image (width, height, adjustment->value, adjustment->value + adjustment->page_size); gtk_widget_draw (g_editor->preview, NULL); } if (last_grad != curr_gradient) { n = 0; tmp = gradients_list; while (tmp) { g = tmp->data; if (g == curr_gradient) break; /* We found the one we want */ n++; /* Next gradient */ tmp = g_slist_next (tmp); } last_grad = curr_gradient; } } /*****/ static void prev_fill_image (int width, int height, double left, double right) { guchar *p0, *p1; int x, y; double dx, cur_x; double r, g, b, a; double c0, c1; dx = (right - left) / (width - 1); cur_x = left; p0 = g_editor->preview_rows[0]; p1 = g_editor->preview_rows[1]; /* Create lines to fill the image */ for (x = 0; x < width; x++) { gradient_get_color_at (curr_gradient, cur_x, &r, &g, &b, &a); if ((x / GIMP_CHECK_SIZE) & 1) { c0 = GIMP_CHECK_LIGHT; c1 = GIMP_CHECK_DARK; } else { c0 = GIMP_CHECK_DARK; c1 = GIMP_CHECK_LIGHT; } *p0++ = (c0 + (r - c0) * a) * 255.0; *p0++ = (c0 + (g - c0) * a) * 255.0; *p0++ = (c0 + (b - c0) * a) * 255.0; *p1++ = (c1 + (r - c1) * a) * 255.0; *p1++ = (c1 + (g - c1) * a) * 255.0; *p1++ = (c1 + (b - c1) * a) * 255.0; cur_x += dx; } /* Fill image */ for (y = 0; y < height; y++) if ((y / GIMP_CHECK_SIZE) & 1) gtk_preview_draw_row (GTK_PREVIEW (g_editor->preview), g_editor->preview_rows[1], 0, y, width); else gtk_preview_draw_row (GTK_PREVIEW (g_editor->preview), g_editor->preview_rows[0], 0, y, width); } /***** Gradient control functions *****/ /* *** WARNING *** WARNING *** WARNING *** * * All the event-handling code for the gradient control widget is * extremely hairy. You are not expected to understand it. If you * find bugs, mail me unless you are very brave and you want to fix * them yourself ;-) */ static gint control_events (GtkWidget *widget, GdkEvent *event, gpointer data) { GdkEventButton *bevent; grad_segment_t *seg; gint x, y; guint32 time; switch (event->type) { case GDK_EXPOSE: control_update (FALSE); break; case GDK_LEAVE_NOTIFY: ed_set_hint (""); break; case GDK_BUTTON_PRESS: if (g_editor->control_drag_mode == GRAD_DRAG_NONE) { gtk_widget_get_pointer (g_editor->control, &x, &y); bevent = (GdkEventButton *) event; g_editor->control_last_x = x; g_editor->control_click_time = bevent->time; control_button_press (x, y, bevent->button, bevent->state); if (g_editor->control_drag_mode != GRAD_DRAG_NONE) gtk_grab_add (widget); } break; case GDK_BUTTON_RELEASE: ed_set_hint (""); if (g_editor->control_drag_mode != GRAD_DRAG_NONE) { gtk_grab_remove (widget); gtk_widget_get_pointer (g_editor->control, &x, &y); time = ((GdkEventButton *) event)->time; if ((time - g_editor->control_click_time) >= GRAD_MOVE_TIME) ed_update_editor (GRAD_UPDATE_GRADIENT); /* Possible move */ else if ((g_editor->control_drag_mode == GRAD_DRAG_MIDDLE) || (g_editor->control_drag_mode == GRAD_DRAG_ALL)) { seg = g_editor->control_drag_segment; if ((g_editor->control_drag_mode == GRAD_DRAG_ALL) && g_editor->control_compress) control_extend_selection (seg, control_calc_g_pos (x)); else control_select_single_segment (seg); ed_update_editor (GRAD_UPDATE_CONTROL); } g_editor->control_drag_mode = GRAD_DRAG_NONE; g_editor->control_compress = FALSE; control_do_hint (x, y); } break; case GDK_MOTION_NOTIFY: gtk_widget_get_pointer (g_editor->control, &x, &y); if (x != g_editor->control_last_x) { g_editor->control_last_x = x; if (g_editor->control_drag_mode != GRAD_DRAG_NONE) { time = ((GdkEventButton *) event)->time; if ((time - g_editor->control_click_time) >= GRAD_MOVE_TIME) control_motion(x); } else { ed_update_editor (GRAD_UPDATE_CONTROL); control_do_hint (x, y); } } break; default: break; } return FALSE; } /*****/ static void control_do_hint (gint x, gint y) { grad_segment_t *seg; control_drag_mode_t handle; gboolean in_handle; double pos; pos = control_calc_g_pos (x); if ((pos < 0.0) || (pos > 1.0)) return; seg_get_closest_handle (curr_gradient, pos, &seg, &handle); in_handle = control_point_in_handle (x, y, seg, handle); if (in_handle) { switch (handle) { case GRAD_DRAG_LEFT: if (seg != NULL) { if (seg->prev != NULL) ed_set_hint (_("Drag: move Shift+drag: move & compress")); else ed_set_hint (_("Click: select Shift+click: extend selection")); } else ed_set_hint (_("Click: select Shift+click: extend selection")); break; case GRAD_DRAG_MIDDLE: ed_set_hint (_("Click: select Shift+click: extend selection " "Drag: move")); break; default: g_warning ("in_handle is true yet we got handle type %d", (int) handle); break; } } else ed_set_hint (_("Click: select Shift+click: extend selection " "Drag: move Shift+drag: move & compress")); } /*****/ static void control_button_press (gint x, gint y, guint button, guint state) { grad_segment_t *seg; control_drag_mode_t handle; double xpos; gboolean in_handle; /* See which button was pressed */ switch (button) { case 1: break; case 3: cpopup_do_popup(); return; /* wheelmouse support */ case 4: { GtkAdjustment *adj = GTK_ADJUSTMENT (g_editor->scroll_data); gfloat new_value = adj->value - adj->page_increment / 2; new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size); gtk_adjustment_set_value (adj, new_value); } return; case 5: { GtkAdjustment *adj = GTK_ADJUSTMENT (g_editor->scroll_data); gfloat new_value = adj->value + adj->page_increment / 2; new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size); gtk_adjustment_set_value (adj, new_value); } return; default: return; } /* Find the closest handle */ xpos = control_calc_g_pos (x); seg_get_closest_handle (curr_gradient, xpos, &seg, &handle); in_handle = control_point_in_handle (x, y, seg, handle); /* Now see what we have */ if (in_handle) { switch (handle) { case GRAD_DRAG_LEFT: if (seg != NULL) { /* Left handle of some segment */ if (state & GDK_SHIFT_MASK) { if (seg->prev != NULL) { g_editor->control_drag_mode = GRAD_DRAG_LEFT; g_editor->control_drag_segment = seg; g_editor->control_compress = TRUE; } else { control_extend_selection (seg, xpos); ed_update_editor (GRAD_UPDATE_CONTROL); } } else if (seg->prev != NULL) { g_editor->control_drag_mode = GRAD_DRAG_LEFT; g_editor->control_drag_segment = seg; } else { control_select_single_segment (seg); ed_update_editor (GRAD_UPDATE_CONTROL); } return; } else /* seg == NULL */ { /* Right handle of last segment */ seg = seg_get_last_segment (curr_gradient->segments); if (state & GDK_SHIFT_MASK) { control_extend_selection (seg, xpos); ed_update_editor (GRAD_UPDATE_CONTROL); } else { control_select_single_segment (seg); ed_update_editor (GRAD_UPDATE_CONTROL); } return; } break; case GRAD_DRAG_MIDDLE: if (state & GDK_SHIFT_MASK) { control_extend_selection (seg, xpos); ed_update_editor (GRAD_UPDATE_CONTROL); } else { g_editor->control_drag_mode = GRAD_DRAG_MIDDLE; g_editor->control_drag_segment = seg; } return; default: g_warning ("in_handle is true yet we got handle type %d", (int) handle); return; } } else /* !in_handle */ { seg = seg_get_segment_at (curr_gradient, xpos); g_editor->control_drag_mode = GRAD_DRAG_ALL; g_editor->control_drag_segment = seg; g_editor->control_last_gx = xpos; g_editor->control_orig_pos = xpos; if (state & GDK_SHIFT_MASK) g_editor->control_compress = TRUE; return; } } /*****/ static gboolean control_point_in_handle (gint x, gint y, grad_segment_t *seg, control_drag_mode_t handle) { gint handle_pos; switch (handle) { case GRAD_DRAG_LEFT: if (seg) handle_pos = control_calc_p_pos (seg->left); else { seg = seg_get_last_segment (curr_gradient->segments); handle_pos = control_calc_p_pos (seg->right); } break; case GRAD_DRAG_MIDDLE: handle_pos = control_calc_p_pos (seg->middle); break; default: g_warning ("can not handle drag mode %d", (int) handle); return FALSE; } y /= 2; if ((x >= (handle_pos - y)) && (x <= (handle_pos + y))) return TRUE; else return FALSE; } /*****/ static void control_select_single_segment (grad_segment_t *seg) { g_editor->control_sel_l = seg; g_editor->control_sel_r = seg; } /*****/ static void control_extend_selection (grad_segment_t *seg, double pos) { if (fabs (pos - g_editor->control_sel_l->left) < fabs (pos - g_editor->control_sel_r->right)) g_editor->control_sel_l = seg; else g_editor->control_sel_r = seg; } /*****/ static void control_motion (gint x) { grad_segment_t *seg; gdouble pos; gdouble delta; gchar *str = NULL; seg = g_editor->control_drag_segment; switch (g_editor->control_drag_mode) { case GRAD_DRAG_LEFT: pos = control_calc_g_pos (x); if (!g_editor->control_compress) seg->prev->right = seg->left = CLAMP (pos, seg->prev->middle + EPSILON, seg->middle - EPSILON); else control_compress_left (g_editor->control_sel_l, g_editor->control_sel_r, seg, pos); str = g_strdup_printf (_("Handle position: %0.6f"), seg->left); ed_set_hint (str); break; case GRAD_DRAG_MIDDLE: pos = control_calc_g_pos (x); seg->middle = CLAMP (pos, seg->left + EPSILON, seg->right - EPSILON); str = g_strdup_printf (_("Handle position: %0.6f"), seg->middle); ed_set_hint (str); break; case GRAD_DRAG_ALL: pos = control_calc_g_pos (x); delta = pos - g_editor->control_last_gx; if ((seg->left >= g_editor->control_sel_l->left) && (seg->right <= g_editor->control_sel_r->right)) delta = control_move (g_editor->control_sel_l, g_editor->control_sel_r, delta); else delta = control_move (seg, seg, delta); g_editor->control_last_gx += delta; str = g_strdup_printf (_("Distance: %0.6f"), g_editor->control_last_gx - g_editor->control_orig_pos); ed_set_hint (str); break; default: gimp_fatal_error ("Attempt to move bogus handle %d", (int) g_editor->control_drag_mode); break; } if (str) g_free (str); curr_gradient->dirty = TRUE; if (g_editor->instant_update) ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); else ed_update_editor (GRAD_UPDATE_CONTROL); } /*****/ static void control_compress_left (grad_segment_t *range_l, grad_segment_t *range_r, grad_segment_t *drag_seg, double pos) { grad_segment_t *seg; double lbound, rbound; int k; /* Check what we have to compress */ if (!((drag_seg->left >= range_l->left) && ((drag_seg->right <= range_r->right) || (drag_seg == range_r->next)))) { /* We are compressing a segment outside the selection */ range_l = range_r = drag_seg; } /* Calculate left bound for dragged hadle */ if (drag_seg == range_l) lbound = range_l->prev->left + 2.0 * EPSILON; else { /* Count number of segments to the left of the dragged handle */ seg = drag_seg; k = 0; while (seg != range_l) { k++; seg = seg->prev; } /* 2*k handles have to fit */ lbound = range_l->left + 2.0 * k * EPSILON; } /* Calculate right bound for dragged handle */ if (drag_seg == range_r->next) rbound = range_r->next->right - 2.0 * EPSILON; else { /* Count number of segments to the right of the dragged handle */ seg = drag_seg; k = 1; while (seg != range_r) { k++; seg = seg->next; } /* 2*k handles have to fit */ rbound = range_r->right - 2.0 * k * EPSILON; } /* Calculate position */ pos = CLAMP (pos, lbound, rbound); /* Compress segments to the left of the handle */ if (drag_seg == range_l) control_compress_range (range_l->prev, range_l->prev, range_l->prev->left, pos); else control_compress_range (range_l, drag_seg->prev, range_l->left, pos); /* Compress segments to the right of the handle */ if (drag_seg != range_r->next) control_compress_range (drag_seg, range_r, pos, range_r->right); else control_compress_range (drag_seg, drag_seg, pos, drag_seg->right); } /*****/ static void control_compress_range (grad_segment_t *range_l, grad_segment_t *range_r, double new_l, double new_r) { double orig_l, orig_r; double scale; grad_segment_t *seg, *aseg; orig_l = range_l->left; orig_r = range_r->right; scale = (new_r - new_l) / (orig_r - orig_l); seg = range_l; do { seg->left = new_l + (seg->left - orig_l) * scale; seg->middle = new_l + (seg->middle - orig_l) * scale; seg->right = new_l + (seg->right - orig_l) * scale; /* Next */ aseg = seg; seg = seg->next; } while (aseg != range_r); } /*****/ static double control_move (grad_segment_t *range_l, grad_segment_t *range_r, double delta) { double lbound, rbound; int is_first, is_last; grad_segment_t *seg, *aseg; /* First or last segments in gradient? */ is_first = (range_l->prev == NULL); is_last = (range_r->next == NULL); /* Calculate drag bounds */ if (!g_editor->control_compress) { if (!is_first) lbound = range_l->prev->middle + EPSILON; else lbound = range_l->left + EPSILON; if (!is_last) rbound = range_r->next->middle - EPSILON; else rbound = range_r->right - EPSILON; } else { if (!is_first) lbound = range_l->prev->left + 2.0 * EPSILON; else lbound = range_l->left + EPSILON; if (!is_last) rbound = range_r->next->right - 2.0 * EPSILON; else rbound = range_r->right - EPSILON; } /* Fix the delta if necessary */ if (delta < 0.0) { if (!is_first) { if (range_l->left + delta < lbound) delta = lbound - range_l->left; } else if (range_l->middle + delta < lbound) delta = lbound - range_l->middle; } else { if (!is_last) { if (range_r->right + delta > rbound) delta = rbound - range_r->right; } else if (range_r->middle + delta > rbound) delta = rbound - range_r->middle; } /* Move all the segments inside the range */ seg = range_l; do { if (!((seg == range_l) && is_first)) seg->left += delta; seg->middle += delta; if (!((seg == range_r) && is_last)) seg->right += delta; /* Next */ aseg = seg; seg = seg->next; } while (aseg != range_r); /* Fix the segments that surround the range */ if (!is_first) { if (!g_editor->control_compress) range_l->prev->right = range_l->left; else control_compress_range (range_l->prev, range_l->prev, range_l->prev->left, range_l->left); } if (!is_last) { if (!g_editor->control_compress) range_r->next->left = range_r->right; else control_compress_range (range_r->next, range_r->next, range_r->right, range_r->next->right); } return delta; } /*****/ static void control_update (gboolean recalculate) { GtkAdjustment *adjustment; gint cwidth, cheight; gint pwidth, pheight; /* We only update if we can redraw and a gradient is present */ if (curr_gradient == NULL) return; if (!GTK_WIDGET_DRAWABLE (g_editor->control)) return; /* See whether we have to re-create the control pixmap * depending on the preview's width */ cwidth = g_editor->preview->allocation.width; cheight = GRAD_CONTROL_HEIGHT; if (g_editor->control_pixmap) gdk_window_get_size (g_editor->control_pixmap, &pwidth, &pheight); if (!g_editor->control_pixmap || (cwidth != pwidth) || (cheight != pheight)) { if (g_editor->control_pixmap) gdk_pixmap_unref (g_editor->control_pixmap); g_editor->control_pixmap = gdk_pixmap_new (g_editor->control->window, cwidth, cheight, -1); recalculate = TRUE; } /* Avaoid segfault on first invocation */ if (cwidth < GRAD_PREVIEW_WIDTH) return; /* Have to reset the selection? */ if (recalculate) control_select_single_segment (curr_gradient->segments); /* Redraw pixmap */ adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); control_draw (g_editor->control_pixmap, cwidth, cheight, adjustment->value, adjustment->value + adjustment->page_size); gdk_draw_pixmap (g_editor->control->window, g_editor->control->style->black_gc, g_editor->control_pixmap, 0, 0, 0, 0, cwidth, cheight); } /*****/ static void control_draw (GdkPixmap *pixmap, int width, int height, double left, double right) { int sel_l, sel_r; double g_pos; grad_segment_t *seg; control_drag_mode_t handle; /* Clear the pixmap */ gdk_draw_rectangle (pixmap, g_editor->control->style->bg_gc[GTK_STATE_NORMAL], TRUE, 0, 0, width, height); /* Draw selection */ sel_l = control_calc_p_pos (g_editor->control_sel_l->left); sel_r = control_calc_p_pos (g_editor->control_sel_r->right); gdk_draw_rectangle (pixmap, g_editor->control->style->dark_gc[GTK_STATE_NORMAL], TRUE, sel_l, 0, sel_r - sel_l + 1, height); /* Draw handles */ seg = curr_gradient->segments; while (seg) { control_draw_normal_handle (pixmap, seg->left, height); control_draw_middle_handle (pixmap, seg->middle, height); /* Draw right handle only if this is the last segment */ if (seg->next == NULL) control_draw_normal_handle (pixmap, seg->right, height); /* Next! */ seg = seg->next; } /* Draw the handle which is closest to the mouse position */ g_pos = control_calc_g_pos (g_editor->control_last_x); seg_get_closest_handle (curr_gradient, CLAMP (g_pos, 0.0, 1.0), &seg, &handle); switch (handle) { case GRAD_DRAG_LEFT: if (seg) control_draw_normal_handle (pixmap, seg->left, height); else { seg = seg_get_last_segment (curr_gradient->segments); control_draw_normal_handle (pixmap, seg->right, height); } break; case GRAD_DRAG_MIDDLE: control_draw_middle_handle (pixmap, seg->middle, height); break; default: break; } } /*****/ static void control_draw_normal_handle (GdkPixmap *pixmap, double pos, int height) { control_draw_handle (pixmap, g_editor->control->style->black_gc, g_editor->control->style->black_gc, control_calc_p_pos (pos), height); } static void control_draw_middle_handle (GdkPixmap *pixmap, double pos, int height) { control_draw_handle (pixmap, g_editor->control->style->black_gc, g_editor->control->style->bg_gc[GTK_STATE_PRELIGHT], control_calc_p_pos(pos), height); } static void control_draw_handle (GdkPixmap *pixmap, GdkGC *border_gc, GdkGC *fill_gc, int xpos, int height) { int y; int left, right, bottom; for (y = 0; y < height; y++) gdk_draw_line (pixmap, fill_gc, xpos - y / 2, y, xpos + y / 2, y); bottom = height - 1; left = xpos - bottom / 2; right = xpos + bottom / 2; gdk_draw_line (pixmap, border_gc, xpos, 0, left, bottom); gdk_draw_line (pixmap, border_gc, xpos, 0, right, bottom); gdk_draw_line (pixmap, border_gc, left, bottom, right, bottom); } /*****/ static int control_calc_p_pos (double pos) { gint pwidth, pheight; GtkAdjustment *adjustment; /* Calculate the position (in widget's coordinates) of the * requested point from the gradient. Rounding is done to * minimize mismatches between the rendered gradient preview * and the gradient control's handles. */ adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); gdk_window_get_size (g_editor->control_pixmap, &pwidth, &pheight); return (int) ((pwidth - 1) * (pos - adjustment->value) / adjustment->page_size + 0.5); } /*****/ static double control_calc_g_pos (int pos) { gint pwidth, pheight; GtkAdjustment *adjustment; /* Calculate the gradient position that corresponds to widget's coordinates */ adjustment = GTK_ADJUSTMENT (g_editor->scroll_data); gdk_window_get_size (g_editor->control_pixmap, &pwidth, &pheight); return adjustment->page_size * pos / (pwidth - 1) + adjustment->value; } /***** Control popup functions *****/ static void cpopup_create_main_menu (void) { GtkWidget *menu; GtkWidget *menuitem; GtkWidget *label; GtkAccelGroup *accel_group; menu = gtk_menu_new (); accel_group = gtk_accel_group_new (); g_editor->accel_group = accel_group; gtk_menu_set_accel_group (GTK_MENU (menu), accel_group); gtk_window_add_accel_group (GTK_WINDOW (g_editor->shell), accel_group); /* Left endpoint */ menuitem = cpopup_create_color_item (&g_editor->left_color_preview, &label); gtk_label_set_text (GTK_LABEL (label), _("Left endpoint's color")); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_set_left_color_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'L', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); menuitem = gtk_menu_item_new_with_label (_("Load from")); g_editor->control_left_load_popup = cpopup_create_load_menu (g_editor->left_load_color_boxes, g_editor->left_load_labels, _("Left neighbor's right endpoint"), _("Right endpoint"), (GtkSignalFunc) cpopup_load_left_callback, 'L', GDK_CONTROL_MASK, 'L', GDK_MOD1_MASK, 'F', GDK_CONTROL_MASK); gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), g_editor->control_left_load_popup); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); menuitem = gtk_menu_item_new_with_label (_("Save to")); g_editor->control_left_save_popup = cpopup_create_save_menu (g_editor->left_save_color_boxes, g_editor->left_save_labels, (GtkSignalFunc) cpopup_save_left_callback); gtk_menu_item_set_submenu (GTK_MENU_ITEM(menuitem), g_editor->control_left_save_popup); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); /* Right endpoint */ menuitem = gtk_menu_item_new (); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); menuitem = cpopup_create_color_item (&g_editor->right_color_preview, &label); gtk_label_set_text (GTK_LABEL (label), _("Right endpoint's color")); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_set_right_color_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'R', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); menuitem = gtk_menu_item_new_with_label (_("Load from")); g_editor->control_right_load_popup = cpopup_create_load_menu (g_editor->right_load_color_boxes, g_editor->right_load_labels, _("Right neighbor's left endpoint"), _("Left endpoint"), (GtkSignalFunc) cpopup_load_right_callback, 'R', GDK_CONTROL_MASK, 'R', GDK_MOD1_MASK, 'F', GDK_MOD1_MASK); gtk_menu_item_set_submenu (GTK_MENU_ITEM(menuitem), g_editor->control_right_load_popup); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); menuitem = gtk_menu_item_new_with_label (_("Save to")); g_editor->control_right_save_popup = cpopup_create_save_menu (g_editor->right_save_color_boxes, g_editor->right_save_labels, (GtkSignalFunc) cpopup_save_right_callback); gtk_menu_item_set_submenu (GTK_MENU_ITEM(menuitem), g_editor->control_right_save_popup); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); /* Blending function */ menuitem = gtk_menu_item_new (); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_blending_label); g_editor->control_blending_popup = cpopup_create_blending_menu (); gtk_menu_item_set_submenu (GTK_MENU_ITEM(menuitem), g_editor->control_blending_popup); gtk_menu_append (GTK_MENU(menu), menuitem); gtk_widget_show (menuitem); /* Coloring type */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_coloring_label); g_editor->control_coloring_popup = cpopup_create_coloring_menu (); gtk_menu_item_set_submenu (GTK_MENU_ITEM(menuitem), g_editor->control_coloring_popup); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); /* Operations */ menuitem = gtk_menu_item_new (); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); /* Split at midpoint */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_splitm_label); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_split_midpoint_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator(menuitem, "activate", accel_group, 'S', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Split uniformly */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_splitu_label); gtk_signal_connect (GTK_OBJECT(menuitem), "activate", (GtkSignalFunc) cpopup_split_uniform_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'U', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Delete */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_delete_label); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_delete_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); g_editor->control_delete_menu_item = menuitem; gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'D', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Recenter */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_recenter_label); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_recenter_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'C', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Redistribute */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_redistribute_label); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_redistribute_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'C', GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Selection ops */ menuitem = gtk_menu_item_new (); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); menuitem = gtk_menu_item_new_with_label (_("Selection operations")); g_editor->control_sel_ops_popup = cpopup_create_sel_ops_menu (); gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), g_editor->control_sel_ops_popup); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); /* Done */ g_editor->control_main_popup = menu; } static void cpopup_do_popup (void) { cpopup_adjust_menus (); gtk_menu_popup (GTK_MENU (g_editor->control_main_popup), NULL, NULL, NULL, NULL, 3, 0); } /***** Create a single menu item *****/ static GtkWidget * cpopup_create_color_item (GtkWidget **color_box, GtkWidget **label) { GtkWidget *menuitem; GtkWidget *hbox; GtkWidget *vbox; GtkWidget *wcolor_box; GtkWidget *wlabel; menuitem = gtk_menu_item_new(); hbox = gtk_hbox_new (FALSE, 0); gtk_container_add (GTK_CONTAINER (menuitem), hbox); gtk_widget_show (hbox); vbox = gtk_vbox_new (FALSE, 0); gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0); gtk_widget_show (vbox); wcolor_box = gtk_preview_new (GTK_PREVIEW_COLOR); gtk_preview_set_dither (GTK_PREVIEW (wcolor_box), GDK_RGB_DITHER_MAX); gtk_preview_size (GTK_PREVIEW (wcolor_box), GRAD_COLOR_BOX_WIDTH, GRAD_COLOR_BOX_HEIGHT); gtk_box_pack_start (GTK_BOX (vbox), wcolor_box, FALSE, FALSE, 2); gtk_widget_show (wcolor_box); if (color_box) *color_box = wcolor_box; wlabel = gtk_label_new (""); gtk_misc_set_alignment (GTK_MISC (wlabel), 0.0, 0.5); gtk_box_pack_start (GTK_BOX (hbox), wlabel, FALSE, FALSE, 4); gtk_widget_show (wlabel); if (label) *label = wlabel; return menuitem; } static GtkWidget * cpopup_create_menu_item_with_label (gchar *str, GtkWidget **label) { GtkWidget *menuitem; GtkWidget *accel_label; menuitem = gtk_menu_item_new (); accel_label = gtk_accel_label_new (str); gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5); gtk_container_add (GTK_CONTAINER (menuitem), accel_label); gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), menuitem); gtk_widget_show (accel_label); if (label) *label = accel_label; return menuitem; } /***** Update all menus *****/ static void cpopup_adjust_menus (void) { grad_segment_t *seg; int i; double fg_r, fg_g, fg_b; double fg_a; /* Render main menu color boxes */ cpopup_render_color_box (GTK_PREVIEW (g_editor->left_color_preview), g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0); cpopup_render_color_box (GTK_PREVIEW (g_editor->right_color_preview), g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1); /* Render load color from endpoint color boxes */ if (g_editor->control_sel_l->prev != NULL) seg = g_editor->control_sel_l->prev; else seg = seg_get_last_segment (g_editor->control_sel_l); cpopup_render_color_box (GTK_PREVIEW (g_editor->left_load_color_boxes[0]), seg->r1, seg->g1, seg->b1, seg->a1); cpopup_render_color_box (GTK_PREVIEW (g_editor->left_load_color_boxes[1]), g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1); if (g_editor->control_sel_r->next != NULL) seg = g_editor->control_sel_r->next; else seg = curr_gradient->segments; cpopup_render_color_box (GTK_PREVIEW (g_editor->right_load_color_boxes[0]), seg->r0, seg->g0, seg->b0, seg->a0); cpopup_render_color_box (GTK_PREVIEW (g_editor->right_load_color_boxes[1]), g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0); /* Render Foreground color boxes */ ed_fetch_foreground (&fg_r, &fg_g, &fg_b, &fg_a); cpopup_render_color_box (GTK_PREVIEW (g_editor->left_load_color_boxes[2]), fg_r, fg_g, fg_b, fg_a); cpopup_render_color_box (GTK_PREVIEW (g_editor->right_load_color_boxes[2]), fg_r, fg_g, fg_b, fg_a); /* Render saved color boxes */ for (i = 0; i < GRAD_NUM_COLORS; i++) cpopup_update_saved_color(i, g_editor->saved_colors[i].r, g_editor->saved_colors[i].g, g_editor->saved_colors[i].b, g_editor->saved_colors[i].a); /* Adjust labels */ if (g_editor->control_sel_l == g_editor->control_sel_r) { gtk_label_set_text (GTK_LABEL (g_editor->control_blending_label), _("Blending function for segment")); gtk_label_set_text (GTK_LABEL (g_editor->control_coloring_label), _("Coloring type for segment")); gtk_label_set_text (GTK_LABEL (g_editor->control_splitm_label), _("Split segment at midpoint")); gtk_label_set_text (GTK_LABEL (g_editor->control_splitu_label), _("Split segment uniformly")); gtk_label_set_text (GTK_LABEL (g_editor->control_delete_label), _("Delete segment")); gtk_label_set_text (GTK_LABEL (g_editor->control_recenter_label), _("Re-center segment's midpoint")); gtk_label_set_text (GTK_LABEL (g_editor->control_redistribute_label), _("Re-distribute handles in segment")); gtk_label_set_text (GTK_LABEL (g_editor->control_flip_label), _("Flip segment")); gtk_label_set_text (GTK_LABEL (g_editor->control_replicate_label), _("Replicate segment")); } else { gtk_label_set_text (GTK_LABEL (g_editor->control_blending_label), _("Blending function for selection")); gtk_label_set_text (GTK_LABEL (g_editor->control_coloring_label), _("Coloring type for selection")); gtk_label_set_text (GTK_LABEL (g_editor->control_splitm_label), _("Split segments at midpoints")); gtk_label_set_text (GTK_LABEL (g_editor->control_splitu_label), _("Split segments uniformly")); gtk_label_set_text (GTK_LABEL (g_editor->control_delete_label), _("Delete selection")); gtk_label_set_text (GTK_LABEL (g_editor->control_recenter_label), _("Re-center midpoints in selection")); gtk_label_set_text (GTK_LABEL (g_editor->control_redistribute_label), _("Re-distribute handles in selection")); gtk_label_set_text (GTK_LABEL (g_editor->control_flip_label), _("Flip selection")); gtk_label_set_text (GTK_LABEL (g_editor->control_replicate_label), _("Replicate selection")); } /* Adjust blending and coloring menus */ cpopup_adjust_blending_menu (); cpopup_adjust_coloring_menu (); /* Can invoke delete? */ if ((g_editor->control_sel_l->prev == NULL) && (g_editor->control_sel_r->next == NULL)) gtk_widget_set_sensitive (g_editor->control_delete_menu_item, FALSE); else gtk_widget_set_sensitive (g_editor->control_delete_menu_item, TRUE); /* Can invoke blend colors / opacity? */ if (g_editor->control_sel_l == g_editor->control_sel_r) { gtk_widget_set_sensitive (g_editor->control_blend_colors_menu_item, FALSE); gtk_widget_set_sensitive (g_editor->control_blend_opacity_menu_item, FALSE); } else { gtk_widget_set_sensitive (g_editor->control_blend_colors_menu_item, TRUE); gtk_widget_set_sensitive (g_editor->control_blend_opacity_menu_item, TRUE); } } static void cpopup_adjust_blending_menu (void) { gint equal; glong i, num_items; gint type; cpopup_check_selection_params (&equal, NULL); /* Block activate signals */ num_items = (sizeof (g_editor->control_blending_items) / sizeof (g_editor->control_blending_items[0])); type = (int) g_editor->control_sel_l->type; for (i = 0; i < num_items; i++) gtk_signal_handler_block_by_data (GTK_OBJECT (g_editor->control_blending_items[i]), (gpointer) i); /* Set state */ if (equal) { gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (g_editor->control_blending_items[type]), TRUE); gtk_widget_hide (g_editor->control_blending_items[num_items - 1]); } else { gtk_widget_show (g_editor->control_blending_items[num_items - 1]); gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (g_editor->control_blending_items[num_items - 1]), TRUE); } /* Unblock signals */ for (i = 0; i < num_items; i++) gtk_signal_handler_unblock_by_data (GTK_OBJECT (g_editor->control_blending_items[i]), (gpointer) i); } static void cpopup_adjust_coloring_menu (void) { gint equal; glong i, num_items; gint coloring; cpopup_check_selection_params (NULL, &equal); /* Block activate signals */ num_items = (sizeof (g_editor->control_coloring_items) / sizeof (g_editor->control_coloring_items[0])); coloring = (int) g_editor->control_sel_l->color; for (i = 0; i < num_items; i++) gtk_signal_handler_block_by_data (GTK_OBJECT (g_editor->control_coloring_items[i]), (gpointer) i); /* Set state */ if (equal) { gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (g_editor->control_coloring_items[coloring]), TRUE); gtk_widget_hide (g_editor->control_coloring_items[num_items - 1]); } else { gtk_widget_show (g_editor->control_coloring_items[num_items - 1]); gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (g_editor->control_coloring_items[num_items - 1]), TRUE); } /* Unblock signals */ for (i = 0; i < num_items; i++) gtk_signal_handler_unblock_by_data (GTK_OBJECT (g_editor->control_coloring_items[i]), (gpointer) i); } static void cpopup_check_selection_params (gint *equal_blending, gint *equal_coloring) { grad_type_t type; grad_color_t color; int etype, ecolor; grad_segment_t *seg, *aseg; type = g_editor->control_sel_l->type; color = g_editor->control_sel_l->color; etype = 1; ecolor = 1; seg = g_editor->control_sel_l; do { etype = etype && (seg->type == type); ecolor = ecolor && (seg->color == color); aseg = seg; seg = seg->next; } while (aseg != g_editor->control_sel_r); if (equal_blending) *equal_blending = etype; if (equal_coloring) *equal_coloring = ecolor; } /*****/ static void cpopup_render_color_box (GtkPreview *preview, double r, double g, double b, double a) { guchar rows[3][GRAD_COLOR_BOX_WIDTH * 3]; int x, y; int r0, g0, b0; int r1, g1, b1; guchar *p0, *p1, *p2; /* Fill rows */ r0 = (GIMP_CHECK_DARK + (r - GIMP_CHECK_DARK) * a) * 255.0; r1 = (GIMP_CHECK_LIGHT + (r - GIMP_CHECK_LIGHT) * a) * 255.0; g0 = (GIMP_CHECK_DARK + (g - GIMP_CHECK_DARK) * a) * 255.0; g1 = (GIMP_CHECK_LIGHT + (g - GIMP_CHECK_LIGHT) * a) * 255.0; b0 = (GIMP_CHECK_DARK + (b - GIMP_CHECK_DARK) * a) * 255.0; b1 = (GIMP_CHECK_LIGHT + (b - GIMP_CHECK_LIGHT) * a) * 255.0; p0 = rows[0]; p1 = rows[1]; p2 = rows[2]; for (x = 0; x < GRAD_COLOR_BOX_WIDTH; x++) { if ((x == 0) || (x == (GRAD_COLOR_BOX_WIDTH - 1))) { *p0++ = 0; *p0++ = 0; *p0++ = 0; *p1++ = 0; *p1++ = 0; *p1++ = 0; } else if ((x / GIMP_CHECK_SIZE) & 1) { *p0++ = r1; *p0++ = g1; *p0++ = b1; *p1++ = r0; *p1++ = g0; *p1++ = b0; } else { *p0++ = r0; *p0++ = g0; *p0++ = b0; *p1++ = r1; *p1++ = g1; *p1++ = b1; } *p2++ = 0; *p2++ = 0; *p2++ = 0; } /* Fill preview */ gtk_preview_draw_row (preview, rows[2], 0, 0, GRAD_COLOR_BOX_WIDTH); for (y = 1; y < (GRAD_COLOR_BOX_HEIGHT - 1); y++) if ((y / GIMP_CHECK_SIZE) & 1) gtk_preview_draw_row (preview, rows[1], 0, y, GRAD_COLOR_BOX_WIDTH); else gtk_preview_draw_row (preview, rows[0], 0, y, GRAD_COLOR_BOX_WIDTH); gtk_preview_draw_row (preview, rows[2], 0, y, GRAD_COLOR_BOX_WIDTH); } /***** Creale load & save menus *****/ static GtkWidget * cpopup_create_load_menu (GtkWidget **color_boxes, GtkWidget **labels, gchar *label1, gchar *label2, GtkSignalFunc callback, gchar accel_key_0, guint8 accel_mods_0, gchar accel_key_1, guint8 accel_mods_1, gchar accel_key_2, guint8 accel_mods_2) { GtkWidget *menu; GtkWidget *menuitem; GtkAccelGroup *accel_group; gint i; menu = gtk_menu_new (); accel_group = g_editor->accel_group; gtk_menu_set_accel_group (GTK_MENU (menu), accel_group); /* Create items */ for (i = 0; i < (GRAD_NUM_COLORS + 3); i++) { if (i == 3) { /* Insert separator between "to fetch" and "saved" colors */ menuitem = gtk_menu_item_new (); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); } menuitem = cpopup_create_color_item (&color_boxes[i], &labels[i]); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", callback, (gpointer) ((long) i)); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); switch (i) { case 0: gtk_widget_add_accelerator (menuitem, "activate", accel_group, accel_key_0, accel_mods_0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); break; case 1: gtk_widget_add_accelerator (menuitem, "activate", accel_group, accel_key_1, accel_mods_1, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); break; case 2: gtk_widget_add_accelerator (menuitem, "activate", accel_group, accel_key_2, accel_mods_2, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); break; default: break; } } /* Set labels */ gtk_label_set_text (GTK_LABEL (labels[0]), label1); gtk_label_set_text (GTK_LABEL (labels[1]), label2); gtk_label_set_text (GTK_LABEL (labels[2]), _("FG color")); return menu; } static GtkWidget * cpopup_create_save_menu (GtkWidget **color_boxes, GtkWidget **labels, GtkSignalFunc callback) { GtkWidget *menu; GtkWidget *menuitem; gint i; menu = gtk_menu_new (); for (i = 0; i < GRAD_NUM_COLORS; i++) { menuitem = cpopup_create_color_item (&color_boxes[i], &labels[i]); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", callback, (gpointer) ((long) i)); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); } return menu; } /*****/ static void cpopup_update_saved_color (int n, double r, double g, double b, double a) { gchar *str; cpopup_render_color_box (GTK_PREVIEW (g_editor->left_load_color_boxes[n + 3]), r, g, b, a); cpopup_render_color_box (GTK_PREVIEW (g_editor->left_save_color_boxes[n]), r, g, b, a); cpopup_render_color_box (GTK_PREVIEW (g_editor->right_load_color_boxes[n + 3]), r, g, b, a); cpopup_render_color_box (GTK_PREVIEW (g_editor->right_save_color_boxes[n]), r, g, b, a); str = g_strdup_printf (_("RGBA (%0.3f, %0.3f, %0.3f, %0.3f)"), r, g, b, a); gtk_label_set_text (GTK_LABEL (g_editor->left_load_labels[n + 3]), str); gtk_label_set_text (GTK_LABEL (g_editor->left_save_labels[n]), str); gtk_label_set_text (GTK_LABEL (g_editor->right_load_labels[n + 3]), str); gtk_label_set_text (GTK_LABEL (g_editor->right_save_labels[n]), str); g_free (str); g_editor->saved_colors[n].r = r; g_editor->saved_colors[n].g = g; g_editor->saved_colors[n].b = b; g_editor->saved_colors[n].a = a; } /*****/ static void cpopup_load_left_callback (GtkWidget *widget, gpointer data) { grad_segment_t *seg; double fg_r, fg_g, fg_b; double fg_a; switch ((long) data) { case 0: /* Fetch from left neighbor's right endpoint */ if (g_editor->control_sel_l->prev != NULL) seg = g_editor->control_sel_l->prev; else seg = seg_get_last_segment (g_editor->control_sel_l); cpopup_blend_endpoints (seg->r1, seg->g1, seg->b1, seg->a1, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, TRUE, TRUE); break; case 1: /* Fetch from right endpoint */ cpopup_blend_endpoints (g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, TRUE, TRUE); break; case 2: /* Fetch from FG color */ ed_fetch_foreground (&fg_r, &fg_g, &fg_b, &fg_a); cpopup_blend_endpoints (fg_r, fg_g, fg_b, fg_a, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, TRUE, TRUE); break; default: /* Load a color */ cpopup_blend_endpoints (g_editor->saved_colors[(long) data - 3].r, g_editor->saved_colors[(long) data - 3].g, g_editor->saved_colors[(long) data - 3].b, g_editor->saved_colors[(long) data - 3].a, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, TRUE, TRUE); break; } curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT); } static void cpopup_save_left_callback (GtkWidget *widget, gpointer data) { g_editor->saved_colors[(long) data].r = g_editor->control_sel_l->r0; g_editor->saved_colors[(long) data].g = g_editor->control_sel_l->g0; g_editor->saved_colors[(long) data].b = g_editor->control_sel_l->b0; g_editor->saved_colors[(long) data].a = g_editor->control_sel_l->a0; } static void cpopup_load_right_callback (GtkWidget *widget, gpointer data) { grad_segment_t *seg; double fg_r, fg_g, fg_b; double fg_a; switch ((long) data) { case 0: /* Fetch from right neighbor's left endpoint */ if (g_editor->control_sel_r->next != NULL) seg = g_editor->control_sel_r->next; else seg = curr_gradient->segments; cpopup_blend_endpoints (g_editor->control_sel_r->r0, g_editor->control_sel_r->g0, g_editor->control_sel_r->b0, g_editor->control_sel_r->a0, seg->r0, seg->g0, seg->b0, seg->a0, TRUE, TRUE); break; case 1: /* Fetch from left endpoint */ cpopup_blend_endpoints (g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, TRUE, TRUE); break; case 2: /* Fetch from FG color */ ed_fetch_foreground (&fg_r, &fg_g, &fg_b, &fg_a); cpopup_blend_endpoints (g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, fg_r, fg_g, fg_b, fg_a, TRUE, TRUE); break; default: /* Load a color */ cpopup_blend_endpoints (g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, g_editor->saved_colors[(long) data - 3].r, g_editor->saved_colors[(long) data - 3].g, g_editor->saved_colors[(long) data - 3].b, g_editor->saved_colors[(long) data - 3].a, TRUE, TRUE); break; } curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT); } static void cpopup_save_right_callback (GtkWidget *widget, gpointer data) { g_editor->saved_colors[(long) data].r = g_editor->control_sel_r->r1; g_editor->saved_colors[(long) data].g = g_editor->control_sel_r->g1; g_editor->saved_colors[(long) data].b = g_editor->control_sel_r->b1; g_editor->saved_colors[(long) data].a = g_editor->control_sel_r->a1; } /*****/ static void cpopup_set_color_selection_color (GtkColorSelection *cs, double r, double g, double b, double a) { gdouble color[4]; color[0] = r; color[1] = g; color[2] = b; color[3] = a; gtk_color_selection_set_color (cs, color); } static void cpopup_get_color_selection_color (GtkColorSelection *cs, double *r, double *g, double *b, double *a) { gdouble color[4]; gtk_color_selection_get_color (cs, color); *r = color[0]; *g = color[1]; *b = color[2]; *a = color[3]; } /*****/ static grad_segment_t * cpopup_save_selection (void) { grad_segment_t *seg, *prev, *tmp; grad_segment_t *oseg, *oaseg; prev = NULL; oseg = g_editor->control_sel_l; tmp = NULL; do { seg = seg_new_segment (); *seg = *oseg; /* Copy everything */ if (prev == NULL) tmp = seg; /* Remember first segment */ else prev->next = seg; seg->prev = prev; seg->next = NULL; prev = seg; oaseg = oseg; oseg = oseg->next; } while (oaseg != g_editor->control_sel_r); return tmp; } /*****/ static void cpopup_free_selection (grad_segment_t *seg) { seg_free_segments (seg); } /*****/ static void cpopup_replace_selection (grad_segment_t *replace_seg) { grad_segment_t *lseg, *rseg; grad_segment_t *replace_last; /* Remember left and right segments */ lseg = g_editor->control_sel_l->prev; rseg = g_editor->control_sel_r->next; replace_last = seg_get_last_segment (replace_seg); /* Free old selection */ g_editor->control_sel_r->next = NULL; seg_free_segments (g_editor->control_sel_l); /* Link in new segments */ if (lseg) lseg->next = replace_seg; else curr_gradient->segments = replace_seg; replace_seg->prev = lseg; if (rseg) rseg->prev = replace_last; replace_last->next = rseg; g_editor->control_sel_l = replace_seg; g_editor->control_sel_r = replace_last; curr_gradient->last_visited = NULL; /* Force re-search */ } /***** Color dialogs for left and right endpoint *****/ static void cpopup_create_color_dialog (gchar *title, double r, double g, double b, double a, GtkSignalFunc color_changed_callback, GtkSignalFunc ok_callback, GtkSignalFunc cancel_callback, GtkSignalFunc delete_callback) { GtkWidget *window; GtkColorSelection *cs; GtkColorSelectionDialog *csd; window = gtk_color_selection_dialog_new (title); gtk_container_set_border_width (GTK_CONTAINER (window), 2); gtk_widget_destroy (GTK_COLOR_SELECTION_DIALOG (window)->help_button); gimp_help_connect_help_accel (window, gimp_standard_help_func, "dialogs/gradient_editor/gradient_editor.html"); csd = GTK_COLOR_SELECTION_DIALOG (window); cs = GTK_COLOR_SELECTION (csd->colorsel); gtk_color_selection_set_opacity (cs, TRUE); gtk_color_selection_set_update_policy (cs, g_editor->instant_update ? GTK_UPDATE_CONTINUOUS : GTK_UPDATE_DELAYED); /* FIXME: this is a hack; we set the color twice so that the * color selector remembers it as its "old" color, too */ cpopup_set_color_selection_color (cs, r, g, b, a); cpopup_set_color_selection_color (cs, r, g, b, a); gtk_signal_connect (GTK_OBJECT (csd), "delete_event", delete_callback, window); gtk_signal_connect (GTK_OBJECT (cs), "color_changed", color_changed_callback, window); gtk_signal_connect (GTK_OBJECT (csd->ok_button), "clicked", ok_callback, window); gtk_signal_connect (GTK_OBJECT (csd->cancel_button), "clicked", cancel_callback, window); gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_MOUSE); gtk_widget_show (window); } /*****/ static void cpopup_set_left_color_callback (GtkWidget *widget, gpointer data) { g_editor->left_saved_dirty = curr_gradient->dirty; g_editor->left_saved_segments = cpopup_save_selection (); cpopup_create_color_dialog (_("Left endpoint's color"), g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, (GtkSignalFunc) cpopup_left_color_changed, (GtkSignalFunc) cpopup_left_color_dialog_ok, (GtkSignalFunc) cpopup_left_color_dialog_cancel, (GtkSignalFunc) cpopup_left_color_dialog_delete); gtk_widget_set_sensitive (g_editor->shell, FALSE); } static void cpopup_left_color_changed (GtkWidget *widget, gpointer data) { GtkColorSelection *cs; double r, g, b, a; cs = GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (data)->colorsel); cpopup_get_color_selection_color (cs, &r, &g, &b, &a); cpopup_blend_endpoints (r, g, b, a, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, TRUE, TRUE); ed_update_editor (GRAD_UPDATE_GRADIENT); } static void cpopup_left_color_dialog_ok (GtkWidget *widget, gpointer data) { cpopup_left_color_changed (widget, data); curr_gradient->dirty = TRUE; cpopup_free_selection(g_editor->left_saved_segments); gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static void cpopup_left_color_dialog_cancel (GtkWidget *widget, gpointer data) { curr_gradient->dirty = g_editor->left_saved_dirty; cpopup_replace_selection (g_editor->left_saved_segments); ed_update_editor (GRAD_UPDATE_GRADIENT); gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static int cpopup_left_color_dialog_delete (GtkWidget *widget, GdkEvent *event, gpointer data) { cpopup_left_color_dialog_cancel (widget, data); return TRUE; } /*****/ static void cpopup_set_right_color_callback (GtkWidget *widget, gpointer data) { g_editor->right_saved_dirty = curr_gradient->dirty; g_editor->right_saved_segments = cpopup_save_selection (); cpopup_create_color_dialog (_("Right endpoint's color"), g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, (GtkSignalFunc) cpopup_right_color_changed, (GtkSignalFunc) cpopup_right_color_dialog_ok, (GtkSignalFunc) cpopup_right_color_dialog_cancel, (GtkSignalFunc) cpopup_right_color_dialog_delete); gtk_widget_set_sensitive (g_editor->shell, FALSE); } static void cpopup_right_color_changed (GtkWidget *widget, gpointer data) { GtkColorSelection *cs; double r, g, b, a; cs = GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (data)->colorsel); cpopup_get_color_selection_color (cs, &r, &g, &b, &a); cpopup_blend_endpoints (g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, r, g, b, a, TRUE, TRUE); ed_update_editor (GRAD_UPDATE_GRADIENT); } static void cpopup_right_color_dialog_ok (GtkWidget *widget, gpointer data) { cpopup_right_color_changed (widget, data); curr_gradient->dirty = TRUE; cpopup_free_selection (g_editor->right_saved_segments); gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static void cpopup_right_color_dialog_cancel (GtkWidget *widget, gpointer data) { curr_gradient->dirty = g_editor->right_saved_dirty; cpopup_replace_selection (g_editor->right_saved_segments); ed_update_editor (GRAD_UPDATE_GRADIENT); gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static int cpopup_right_color_dialog_delete (GtkWidget *widget, GdkEvent *event, gpointer data) { cpopup_right_color_dialog_cancel (widget, data); return TRUE; } /***** Blending menu *****/ static GtkWidget * cpopup_create_blending_menu (void) { GtkWidget *menu; GtkWidget *menuitem; GSList *group; gint i; gint num_items; menu = gtk_menu_new (); group = NULL; num_items = (sizeof (g_editor->control_blending_items) / sizeof (g_editor->control_blending_items[0])); for (i = 0; i < num_items; i++) { if (i == (num_items - 1)) menuitem = gtk_radio_menu_item_new_with_label(group, _("(Varies)")); else menuitem = gtk_radio_menu_item_new_with_label (group, gettext (blending_types[i])); group = gtk_radio_menu_item_group (GTK_RADIO_MENU_ITEM (menuitem)); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_blending_callback, (gpointer) ((long) i)); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); g_editor->control_blending_items[i] = menuitem; } /* "Varies" is always disabled */ gtk_widget_set_sensitive (g_editor->control_blending_items[num_items - 1], FALSE); return menu; } static void cpopup_blending_callback (GtkWidget *widget, gpointer data) { grad_type_t type; grad_segment_t *seg, *aseg; if (!GTK_CHECK_MENU_ITEM (widget)->active) return; /* Do nothing if the menu item is being deactivated */ type = (grad_type_t) data; seg = g_editor->control_sel_l; do { seg->type = type; aseg = seg; seg = seg->next; } while (aseg != g_editor->control_sel_r); curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT); } /***** Coloring menu *****/ static GtkWidget * cpopup_create_coloring_menu (void) { GtkWidget *menu; GtkWidget *menuitem; GSList *group; gint i; gint num_items; menu = gtk_menu_new (); group = NULL; num_items = (sizeof (g_editor->control_coloring_items) / sizeof (g_editor->control_coloring_items[0])); for (i = 0; i < num_items; i++) { if (i == (num_items - 1)) menuitem = gtk_radio_menu_item_new_with_label(group, _("(Varies)")); else menuitem = gtk_radio_menu_item_new_with_label (group, gettext (coloring_types[i])); group = gtk_radio_menu_item_group (GTK_RADIO_MENU_ITEM (menuitem)); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_coloring_callback, (gpointer) ((long) i)); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); g_editor->control_coloring_items[i] = menuitem; } /* "Varies" is always disabled */ gtk_widget_set_sensitive (g_editor->control_coloring_items[num_items - 1], FALSE); return menu; } static void cpopup_coloring_callback (GtkWidget *widget, gpointer data) { grad_color_t color; grad_segment_t *seg, *aseg; if (! GTK_CHECK_MENU_ITEM (widget)->active) return; /* Do nothing if the menu item is being deactivated */ color = (grad_color_t) data; seg = g_editor->control_sel_l; do { seg->color = color; aseg = seg; seg = seg->next; } while (aseg != g_editor->control_sel_r); curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT); } /*****/ static void cpopup_split_midpoint_callback (GtkWidget *widget, gpointer data) { grad_segment_t *seg, *lseg, *rseg; seg = g_editor->control_sel_l; do { cpopup_split_midpoint (seg, &lseg, &rseg); seg = rseg->next; } while (lseg != g_editor->control_sel_r); g_editor->control_sel_r = rseg; curr_gradient->last_visited = NULL; /* Force re-search */ curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } static void cpopup_split_midpoint (grad_segment_t *lseg, grad_segment_t **newl, grad_segment_t **newr) { double r, g, b, a; grad_segment_t *newseg; /* Get color at original segment's midpoint */ gradient_get_color_at (curr_gradient, lseg->middle, &r, &g, &b, &a); /* Create a new segment and insert it in the list */ newseg = seg_new_segment(); newseg->prev = lseg; newseg->next = lseg->next; lseg->next = newseg; if (newseg->next) newseg->next->prev = newseg; /* Set coordinates of new segment */ newseg->left = lseg->middle; newseg->right = lseg->right; newseg->middle = (newseg->left + newseg->right) / 2.0; /* Set coordinates of original segment */ lseg->right = newseg->left; lseg->middle = (lseg->left + lseg->right) / 2.0; /* Set colors of both segments */ newseg->r1 = lseg->r1; newseg->g1 = lseg->g1; newseg->b1 = lseg->b1; newseg->a1 = lseg->a1; lseg->r1 = newseg->r0 = r; lseg->g1 = newseg->g0 = g; lseg->b1 = newseg->b0 = b; lseg->a1 = newseg->a0 = a; /* Set parameters of new segment */ newseg->type = lseg->type; newseg->color = lseg->color; /* Done */ *newl = lseg; *newr = newseg; } /*****/ static void cpopup_split_uniform_callback (GtkWidget *widget, gpointer data) { GtkWidget *dialog; GtkWidget *vbox; GtkWidget *label; GtkWidget *scale; GtkObject *scale_data; /* Create dialog window */ dialog = gimp_dialog_new ((g_editor->control_sel_l == g_editor->control_sel_r) ? _("Split segment uniformly") : _("Split segments uniformly"), "gradient_segment_split_uniformly", gimp_standard_help_func, "dialogs/gradient_editor/split_segments_uniformly.html", GTK_WIN_POS_MOUSE, FALSE, TRUE, FALSE, _("Split"), cpopup_split_uniform_split_callback, NULL, NULL, NULL, TRUE, FALSE, _("Cancel"), cpopup_split_uniform_cancel_callback, NULL, NULL, NULL, FALSE, TRUE, NULL); /* The main vbox */ vbox = gtk_vbox_new (FALSE, 0); gtk_container_set_border_width (GTK_CONTAINER (vbox), 6); gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), vbox); gtk_widget_show (vbox); /* Instructions */ label = gtk_label_new (_("Please select the number of uniform parts")); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); gtk_widget_show (label); label = gtk_label_new ((g_editor->control_sel_l == g_editor->control_sel_r) ? _("in which you want to split the selected segment") : _("in which you want to split the segments in the selection")); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); gtk_widget_show (label); /* Scale */ g_editor->split_parts = 2; scale_data = gtk_adjustment_new (2.0, 2.0, 21.0, 1.0, 1.0, 1.0); scale = gtk_hscale_new (GTK_ADJUSTMENT (scale_data)); gtk_scale_set_digits (GTK_SCALE (scale), 0); gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP); gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 4); gtk_widget_show (scale); gtk_signal_connect (scale_data, "value_changed", (GtkSignalFunc) cpopup_split_uniform_scale_update, NULL); /* Show! */ gtk_widget_show (dialog); gtk_widget_set_sensitive (g_editor->shell, FALSE); } static void cpopup_split_uniform_scale_update (GtkAdjustment *adjustment, gpointer data) { g_editor->split_parts = (gint) (adjustment->value + 0.5); } static void cpopup_split_uniform_split_callback (GtkWidget *widget, gpointer data) { grad_segment_t *seg, *aseg, *lseg, *rseg, *lsel; gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); seg = g_editor->control_sel_l; lsel = NULL; do { aseg = seg; cpopup_split_uniform (seg, g_editor->split_parts, &lseg, &rseg); if (seg == g_editor->control_sel_l) lsel = lseg; seg = rseg->next; } while (aseg != g_editor->control_sel_r); g_editor->control_sel_l = lsel; g_editor->control_sel_r = rseg; curr_gradient->last_visited = NULL; /* Force re-search */ curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } static void cpopup_split_uniform_cancel_callback (GtkWidget *widget, gpointer data) { gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } static void cpopup_split_uniform (grad_segment_t *lseg, int parts, grad_segment_t **newl, grad_segment_t **newr) { grad_segment_t *seg, *prev, *tmp; gdouble seg_len; gint i; seg_len = (lseg->right - lseg->left) / parts; /* Length of divisions */ seg = NULL; prev = NULL; tmp = NULL; for (i = 0; i < parts; i++) { seg = seg_new_segment(); if (i == 0) tmp = seg; /* Remember first segment */ seg->left = lseg->left + i * seg_len; seg->right = lseg->left + (i + 1) * seg_len; seg->middle = (seg->left + seg->right) / 2.0; gradient_get_color_at (curr_gradient, seg->left, &seg->r0, &seg->g0, &seg->b0, &seg->a0); gradient_get_color_at (curr_gradient, seg->right, &seg->r1, &seg->g1, &seg->b1, &seg->a1); seg->type = lseg->type; seg->color = lseg->color; seg->prev = prev; seg->next = NULL; if (prev) prev->next = seg; prev = seg; } /* Fix edges */ tmp->r0 = lseg->r0; tmp->g0 = lseg->g0; tmp->b0 = lseg->b0; tmp->a0 = lseg->a0; seg->r1 = lseg->r1; seg->g1 = lseg->g1; seg->b1 = lseg->b1; seg->a1 = lseg->a1; tmp->left = lseg->left; seg->right = lseg->right; /* To squish accumulative error */ /* Link in list */ tmp->prev = lseg->prev; seg->next = lseg->next; if (lseg->prev) lseg->prev->next = tmp; else curr_gradient->segments = tmp; /* We are on leftmost segment */ if (lseg->next) lseg->next->prev = seg; curr_gradient->last_visited = NULL; /* Force re-search */ /* Done */ *newl = tmp; *newr = seg; /* Delete old segment */ seg_free_segment (lseg); } /*****/ static void cpopup_delete_callback (GtkWidget *widget, gpointer data) { grad_segment_t *lseg, *rseg, *seg, *aseg, *next; double join; /* Remember segments to the left and to the right of the selection */ lseg = g_editor->control_sel_l->prev; rseg = g_editor->control_sel_r->next; /* Cannot delete all the segments in the gradient */ if ((lseg == NULL) && (rseg == NULL)) return; /* Calculate join point */ join = (g_editor->control_sel_l->left + g_editor->control_sel_r->right) / 2.0; if (lseg == NULL) join = 0.0; else if (rseg == NULL) join = 1.0; /* Move segments */ if (lseg != NULL) control_compress_range (lseg, lseg, lseg->left, join); if (rseg != NULL) control_compress_range (rseg, rseg, join, rseg->right); /* Link */ if (lseg) lseg->next = rseg; if (rseg) rseg->prev = lseg; /* Delete old segments */ seg = g_editor->control_sel_l; do { next = seg->next; aseg = seg; seg_free_segment (seg); seg = next; } while (aseg != g_editor->control_sel_r); /* Change selection */ if (rseg) { g_editor->control_sel_l = rseg; g_editor->control_sel_r = rseg; } else { g_editor->control_sel_l = lseg; g_editor->control_sel_r = lseg; } if (lseg == NULL) curr_gradient->segments = rseg; /* Done */ curr_gradient->last_visited = NULL; /* Force re-search */ curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } /*****/ static void cpopup_recenter_callback (GtkWidget *wiodget, gpointer data) { grad_segment_t *seg, *aseg; seg = g_editor->control_sel_l; do { seg->middle = (seg->left + seg->right) / 2.0; aseg = seg; seg = seg->next; } while (aseg != g_editor->control_sel_r); curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } /*****/ static void cpopup_redistribute_callback (GtkWidget *widget, gpointer data) { grad_segment_t *seg, *aseg; double left, right, seg_len; int num_segs; int i; /* Count number of segments in selection */ num_segs = 0; seg = g_editor->control_sel_l; do { num_segs++; aseg = seg; seg = seg->next; } while (aseg != g_editor->control_sel_r); /* Calculate new segment length */ left = g_editor->control_sel_l->left; right = g_editor->control_sel_r->right; seg_len = (right - left) / num_segs; /* Redistribute */ seg = g_editor->control_sel_l; for (i = 0; i < num_segs; i++) { seg->left = left + i * seg_len; seg->right = left + (i + 1) * seg_len; seg->middle = (seg->left + seg->right) / 2.0; seg = seg->next; } /* Fix endpoints to squish accumulative error */ g_editor->control_sel_l->left = left; g_editor->control_sel_r->right = right; /* Done */ curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } /***** Control popup -> selection options functions *****/ static GtkWidget * cpopup_create_sel_ops_menu (void) { GtkWidget *menu; GtkWidget *menuitem; GtkAccelGroup *accel_group; menu = gtk_menu_new (); accel_group = g_editor->accel_group; gtk_menu_set_accel_group (GTK_MENU (menu), accel_group); /* Flip */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_flip_label); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_flip_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'F', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Replicate */ menuitem = cpopup_create_menu_item_with_label ("", &g_editor->control_replicate_label); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_replicate_callback, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'M', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); /* Blend colors / opacity */ menuitem = gtk_menu_item_new (); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); menuitem = gtk_menu_item_new_with_label (_("Blend endpoints' colors")); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_blend_colors, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); g_editor->control_blend_colors_menu_item = menuitem; gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'B', 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); menuitem = gtk_menu_item_new_with_label (_("Blend endpoints' opacity")); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", (GtkSignalFunc) cpopup_blend_opacity, NULL); gtk_menu_append (GTK_MENU (menu), menuitem); gtk_widget_show (menuitem); gtk_widget_add_accelerator (menuitem, "activate", accel_group, 'B', GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); g_editor->control_blend_opacity_menu_item = menuitem; return menu; } /*****/ static void cpopup_flip_callback (GtkWidget *widget, gpointer data) { grad_segment_t *oseg, *oaseg; grad_segment_t *seg, *prev, *tmp; grad_segment_t *lseg, *rseg; double left, right; left = g_editor->control_sel_l->left; right = g_editor->control_sel_r->right; /* Build flipped segments */ prev = NULL; oseg = g_editor->control_sel_r; tmp = NULL; do { seg = seg_new_segment (); if (prev == NULL) { seg->left = left; tmp = seg; /* Remember first segment */ } else seg->left = left + right - oseg->right; seg->middle = left + right - oseg->middle; seg->right = left + right - oseg->left; seg->r0 = oseg->r1; seg->g0 = oseg->g1; seg->b0 = oseg->b1; seg->a0 = oseg->a1; seg->r1 = oseg->r0; seg->g1 = oseg->g0; seg->b1 = oseg->b0; seg->a1 = oseg->a0; switch (oseg->type) { case GRAD_SPHERE_INCREASING: seg->type = GRAD_SPHERE_DECREASING; break; case GRAD_SPHERE_DECREASING: seg->type = GRAD_SPHERE_INCREASING; break; default: seg->type = oseg->type; } switch (oseg->color) { case GRAD_HSV_CCW: seg->color = GRAD_HSV_CW; break; case GRAD_HSV_CW: seg->color = GRAD_HSV_CCW; break; default: seg->color = oseg->color; } seg->prev = prev; seg->next = NULL; if (prev) prev->next = seg; prev = seg; oaseg = oseg; oseg = oseg->prev; /* Move backwards! */ } while (oaseg != g_editor->control_sel_l); seg->right = right; /* Squish accumulative error */ /* Free old segments */ lseg = g_editor->control_sel_l->prev; rseg = g_editor->control_sel_r->next; oseg = g_editor->control_sel_l; do { oaseg = oseg->next; seg_free_segment (oseg); oseg = oaseg; } while (oaseg != rseg); /* Link in new segments */ if (lseg) lseg->next = tmp; else curr_gradient->segments = tmp; tmp->prev = lseg; seg->next = rseg; if (rseg) rseg->prev = seg; /* Reset selection */ g_editor->control_sel_l = tmp; g_editor->control_sel_r = seg; /* Done */ curr_gradient->last_visited = NULL; /* Force re-search */ curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } /*****/ static void cpopup_replicate_callback (GtkWidget *widget, gpointer data) { GtkWidget *dialog; GtkWidget *vbox; GtkWidget *label; GtkWidget *scale; GtkObject *scale_data; /* Create dialog window */ dialog = gimp_dialog_new ((g_editor->control_sel_l == g_editor->control_sel_r) ? _("Replicate segment") : _("Replicate selection"), "gradient_segment_replicate", gimp_standard_help_func, "dialogs/gradient_editor/replicate_segment.html", GTK_WIN_POS_MOUSE, FALSE, TRUE, FALSE, _("Replicate"), cpopup_do_replicate_callback, NULL, NULL, NULL, FALSE, FALSE, _("Cancel"), cpopup_replicate_cancel_callback, NULL, NULL, NULL, TRUE, TRUE, NULL); vbox = gtk_vbox_new (FALSE, 0); gtk_container_set_border_width (GTK_CONTAINER (vbox), 6); gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), vbox); gtk_widget_show (vbox); /* Instructions */ label = gtk_label_new (_("Please select the number of times")); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); gtk_widget_show (label); label = gtk_label_new ((g_editor->control_sel_l == g_editor->control_sel_r) ? _("you want to replicate the selected segment") : _("you want to replicate the selection")); gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0); gtk_widget_show (label); /* Scale */ g_editor->replicate_times = 2; scale_data = gtk_adjustment_new (2.0, 2.0, 21.0, 1.0, 1.0, 1.0); scale = gtk_hscale_new (GTK_ADJUSTMENT (scale_data)); gtk_scale_set_digits (GTK_SCALE (scale), 0); gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP); gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, TRUE, 4); gtk_widget_show (scale); gtk_signal_connect (scale_data, "value_changed", (GtkSignalFunc) cpopup_replicate_scale_update, NULL); /* Show! */ gtk_widget_show (dialog); gtk_widget_set_sensitive (g_editor->shell, FALSE); } static void cpopup_replicate_scale_update (GtkAdjustment *adjustment, gpointer data) { g_editor->replicate_times = (int) (adjustment->value + 0.5); } static void cpopup_do_replicate_callback (GtkWidget *widget, gpointer data) { gdouble sel_left, sel_right, sel_len; gdouble new_left; gdouble factor; grad_segment_t *prev, *seg, *tmp; grad_segment_t *oseg, *oaseg; grad_segment_t *lseg, *rseg; gint i; gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); /* Remember original parameters */ sel_left = g_editor->control_sel_l->left; sel_right = g_editor->control_sel_r->right; sel_len = sel_right - sel_left; factor = 1.0 / g_editor->replicate_times; /* Build replicated segments */ prev = NULL; seg = NULL; tmp = NULL; for (i = 0; i < g_editor->replicate_times; i++) { /* Build one cycle */ new_left = sel_left + i * factor * sel_len; oseg = g_editor->control_sel_l; do { seg = seg_new_segment(); if (prev == NULL) { seg->left = sel_left; tmp = seg; /* Remember first segment */ } else seg->left = new_left + factor * (oseg->left - sel_left); seg->middle = new_left + factor * (oseg->middle - sel_left); seg->right = new_left + factor * (oseg->right - sel_left); seg->r0 = oseg->r0; seg->g0 = oseg->g0; seg->b0 = oseg->b0; seg->a0 = oseg->a0; seg->r1 = oseg->r1; seg->g1 = oseg->g1; seg->b1 = oseg->b1; seg->a1 = oseg->a1; seg->type = oseg->type; seg->color = oseg->color; seg->prev = prev; seg->next = NULL; if (prev) prev->next = seg; prev = seg; oaseg = oseg; oseg = oseg->next; } while (oaseg != g_editor->control_sel_r); } seg->right = sel_right; /* Squish accumulative error */ /* Free old segments */ lseg = g_editor->control_sel_l->prev; rseg = g_editor->control_sel_r->next; oseg = g_editor->control_sel_l; do { oaseg = oseg->next; seg_free_segment(oseg); oseg = oaseg; } while (oaseg != rseg); /* Link in new segments */ if (lseg) lseg->next = tmp; else curr_gradient->segments = tmp; tmp->prev = lseg; seg->next = rseg; if (rseg) rseg->prev = seg; /* Reset selection */ g_editor->control_sel_l = tmp; g_editor->control_sel_r = seg; /* Done */ curr_gradient->last_visited = NULL; /* Force re-search */ curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT | GRAD_UPDATE_CONTROL); } static void cpopup_replicate_cancel_callback (GtkWidget *widget, gpointer data) { gtk_widget_destroy (GTK_WIDGET (data)); gtk_widget_set_sensitive (g_editor->shell, TRUE); } /*****/ static void cpopup_blend_colors (GtkWidget *widget, gpointer data) { cpopup_blend_endpoints (g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, TRUE, FALSE); curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT); } static void cpopup_blend_opacity (GtkWidget *widget, gpointer data) { cpopup_blend_endpoints (g_editor->control_sel_l->r0, g_editor->control_sel_l->g0, g_editor->control_sel_l->b0, g_editor->control_sel_l->a0, g_editor->control_sel_r->r1, g_editor->control_sel_r->g1, g_editor->control_sel_r->b1, g_editor->control_sel_r->a1, FALSE, TRUE); curr_gradient->dirty = TRUE; ed_update_editor (GRAD_UPDATE_GRADIENT); } /***** Main blend function *****/ static void cpopup_blend_endpoints (double r0, double g0, double b0, double a0, double r1, double g1, double b1, double a1, int blend_colors, int blend_opacity) { double dr, dg, db, da; double left, len; grad_segment_t *seg, *aseg; dr = r1 - r0; dg = g1 - g0; db = b1 - b0; da = a1 - a0; left = g_editor->control_sel_l->left; len = g_editor->control_sel_r->right - left; seg = g_editor->control_sel_l; do { if (blend_colors) { seg->r0 = r0 + (seg->left - left) / len * dr; seg->g0 = g0 + (seg->left - left) / len * dg; seg->b0 = b0 + (seg->left - left) / len * db; seg->r1 = r0 + (seg->right - left) / len * dr; seg->g1 = g0 + (seg->right - left) / len * dg; seg->b1 = b0 + (seg->right - left) / len * db; } if (blend_opacity) { seg->a0 = a0 + (seg->left - left) / len * da; seg->a1 = a0 + (seg->right - left) / len * da; } aseg = seg; seg = seg->next; } while (aseg != g_editor->control_sel_r); } /***** Gradient functions *****/ static gradient_t * grad_new_gradient (void) { gradient_t *grad; grad = g_new (gradient_t, 1); grad->name = NULL; grad->filename = NULL; grad->segments = NULL; grad->last_visited = NULL; grad->dirty = FALSE; grad->pixmap = NULL; return grad; } /*****/ static void grad_free_gradient (gradient_t *grad) { g_assert (grad != NULL); if (grad->name) g_free (grad->name); if (grad->segments) seg_free_segments (grad->segments); if (grad->filename) g_free (grad->filename); if (grad->pixmap) gdk_pixmap_unref (grad->pixmap); g_free (grad); } /*****/ static void grad_save_all (gboolean need_free) { GSList *node; gradient_t *grad; for (node = gradients_list; node; node = g_slist_next (node)) { grad = node->data; /* If gradient has dirty flag set, save it */ if (grad->dirty) grad_save_gradient (grad, grad->filename); if (need_free) grad_free_gradient (grad); } } /*****/ static void grad_free_gradients (void) { grad_save_all (TRUE); g_slist_free (gradients_list); num_gradients = 0; gradients_list = NULL; curr_gradient = NULL; dnd_gradient = NULL; } /*****/ static void grad_load_gradient (char *filename) { FILE *file; gradient_t *grad; grad_segment_t *seg, *prev; int num_segments; int i; int type, color; char line[1024]; g_assert (filename != NULL); file = fopen (filename, "rb"); if (!file) return; fgets (line, 1024, file); if (strcmp (line, "GIMP Gradient\n") != 0) return; grad = grad_new_gradient (); grad->filename = g_strdup (filename); grad->name = g_strdup (g_basename (filename)); fgets (line, 1024, file); num_segments = atoi (line); if (num_segments < 1) { g_message ("grad_load_gradient(): " "invalid number of segments in \"%s\"", filename); g_free (grad); return; } prev = NULL; for (i = 0; i < num_segments; i++) { seg = seg_new_segment (); seg->prev = prev; if (prev) prev->next = seg; else grad->segments = seg; fgets (line, 1024, file); if (sscanf (line, "%lf%lf%lf%lf%lf%lf%lf%lf%lf%lf%lf%d%d", &(seg->left), &(seg->middle), &(seg->right), &(seg->r0), &(seg->g0), &(seg->b0), &(seg->a0), &(seg->r1), &(seg->g1), &(seg->b1), &(seg->a1), &type, &color) != 13) { g_message ("grad_load_gradient(): badly formatted " "gradient segment %d in \"%s\" --- bad things may " "happen soon", i, filename); } else { seg->type = (grad_type_t) type; seg->color = (grad_color_t) color; } prev = seg; } fclose (file); grad_insert_in_gradients_list (grad); } /*****/ static void grad_save_gradient (gradient_t *grad, char *filename) { FILE *file; int num_segments; grad_segment_t *seg; g_assert (grad != NULL); if (!filename) { g_message ("grad_save_gradient(): " "can not save gradient with NULL filename"); return; } file = fopen (filename, "wb"); if (!file) { g_message ("grad_save_gradient(): can't open \"%s\"", filename); return; } /* File format is: * * GIMP Gradient * number_of_segments * left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring * left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring * ... */ fprintf (file, "GIMP Gradient\n"); /* Count number of segments */ num_segments = 0; seg = grad->segments; while (seg) { num_segments++; seg = seg->next; } /* Write rest of file */ fprintf (file, "%d\n", num_segments); for (seg = grad->segments; seg; seg = seg->next) fprintf (file, "%f %f %f %f %f %f %f %f %f %f %f %d %d\n", seg->left, seg->middle, seg->right, seg->r0, seg->g0, seg->b0, seg->a0, seg->r1, seg->g1, seg->b1, seg->a1, (int) seg->type, (int) seg->color); fclose(file); grad->dirty = FALSE; } /*****/ static gradient_t * grad_create_default_gradient (void) { gradient_t *grad; grad = grad_new_gradient (); grad->segments = seg_new_segment (); return grad; } /*****/ static int grad_insert_in_gradients_list (gradient_t *grad) { GSList *tmp; gradient_t *g; int n; /* We insert gradients in alphabetical order. Find the index * of the gradient after which we will insert the current one. */ n = 0; g = NULL; for (tmp = gradients_list; tmp; tmp = g_slist_next (tmp)) { g = tmp->data; if (strcmp (grad->name, g->name) <= 0) break; /* We found the one we want */ n++; } /* is there a gradient with this name already? */ if (g && strcmp (grad->name, g->name) == 0) { gradients_list = g_slist_remove (gradients_list, g); grad_free_gradient (g); num_gradients--; /* force refresh in case anyone had the gradient selected */ gimp_context_refresh_gradients (); } num_gradients++; gradients_list = g_slist_insert (gradients_list, grad, n); return n; } /*****/ static void grad_dump_gradient (gradient_t *grad, FILE *file) { grad_segment_t *seg; fprintf (file, "Name: \"%s\"\n", grad->name); fprintf (file, "Dirty: %d\n", grad->dirty); fprintf (file, "Filename: \"%s\"\n", grad->filename); for (seg = grad->segments; seg; seg = seg->next) { fprintf (file, "%c%p | %f %f %f | %f %f %f %f | %f %f %f %f | %d %d | %p %p\n", (seg == grad->last_visited) ? '>' : ' ', seg, seg->left, seg->middle, seg->right, seg->r0, seg->g0, seg->b0, seg->a0, seg->r1, seg->g1, seg->b1, seg->a1, (int) seg->type, (int) seg->color, seg->prev, seg->next); } } /***** Segment functions *****/ static grad_segment_t * seg_new_segment (void) { grad_segment_t *seg; seg = g_new (grad_segment_t, 1); seg->left = 0.0; seg->middle = 0.5; seg->right = 1.0; seg->r0 = seg->g0 = seg->b0 = 0.0; seg->r1 = seg->g1 = seg->b1 = seg->a0 = seg->a1 = 1.0; seg->type = GRAD_LINEAR; seg->color = GRAD_RGB; seg->prev = seg->next = NULL; return seg; } /*****/ static void seg_free_segment (grad_segment_t *seg) { g_assert (seg != NULL); g_free (seg); } static void seg_free_segments (grad_segment_t *seg) { grad_segment_t *tmp; g_assert (seg != NULL); while (seg) { tmp = seg->next; seg_free_segment (seg); seg = tmp; } } /*****/ static grad_segment_t * seg_get_segment_at (gradient_t *grad, double pos) { grad_segment_t *seg; g_assert (grad != NULL); /* handle FP imprecision at the edges of the gradient */ pos = CLAMP (pos, 0.0, 1.0); if (grad->last_visited) seg = grad->last_visited; else seg = grad->segments; while (seg) { if (pos >= seg->left) { if (pos <= seg->right) { grad->last_visited = seg; /* for speed */ return seg; } else { seg = seg->next; } } else { seg = seg->prev; } } /* Oops: we should have found a segment, but we didn't */ grad_dump_gradient (curr_gradient, stderr); gimp_fatal_error ("seg_get_segment_at(): " "No matching segment for position %0.15f", pos); return NULL; /* To shut up -Wall */ } /*****/ static grad_segment_t * seg_get_last_segment (grad_segment_t *seg) { if (!seg) return NULL; while (seg->next) seg = seg->next; return seg; } /*****/ static void seg_get_closest_handle (gradient_t *grad, double pos, grad_segment_t **seg, control_drag_mode_t *handle) { double l_delta, m_delta, r_delta; *seg = seg_get_segment_at (grad, pos); m_delta = fabs (pos - (*seg)->middle); if (pos < (*seg)->middle) { l_delta = fabs (pos - (*seg)->left); if (l_delta < m_delta) *handle = GRAD_DRAG_LEFT; else *handle = GRAD_DRAG_MIDDLE; } else { r_delta = fabs (pos - (*seg)->right); if (m_delta < r_delta) { *handle = GRAD_DRAG_MIDDLE; } else { *seg = (*seg)->next; *handle = GRAD_DRAG_LEFT; } } } /***** Calculation functions *****/ static double calc_linear_factor (double middle, double pos) { if (pos <= middle) { if (middle < EPSILON) return 0.0; else return 0.5 * pos / middle; } else { pos -= middle; middle = 1.0 - middle; if (middle < EPSILON) return 1.0; else return 0.5 + 0.5 * pos / middle; } } static double calc_curved_factor (double middle, double pos) { if (middle < EPSILON) middle = EPSILON; return pow(pos, log (0.5) / log (middle)); } static double calc_sine_factor (double middle, double pos) { pos = calc_linear_factor (middle, pos); return (sin ((-G_PI / 2.0) + G_PI * pos) + 1.0) / 2.0; } static double calc_sphere_increasing_factor (double middle, double pos) { pos = calc_linear_factor (middle, pos) - 1.0; return sqrt (1.0 - pos * pos); /* Works for convex increasing and concave decreasing */ } static double calc_sphere_decreasing_factor (double middle, double pos) { pos = calc_linear_factor (middle, pos); return 1.0 - sqrt(1.0 - pos * pos); /* Works for convex decreasing and concave increasing */ } /***** Files and paths functions *****/ static gchar * build_user_filename (gchar *name, gchar *path_str) { GList *grad_path; gchar *grad_dir; gchar *filename; g_assert (name != NULL); if (!path_str) return NULL; /* Perhaps this is not a good idea */ grad_path = gimp_path_parse (path_str, 16, TRUE, NULL); grad_dir = gimp_path_get_user_writable_dir (grad_path); gimp_path_free (grad_path); if (!grad_dir) return NULL; /* Perhaps this is not a good idea */ filename = g_strdup_printf ("%s%s", grad_dir, name); g_free (grad_dir); return filename; }