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311c83b0a4
1999-08-19 Michael Natterer <mitschel@cs.tu-berlin.de> * app/Makefile.am * app/gimpdnd.h: new file containing the dnd data definitions. * app/disp_callbacks.[ch] * app/interface.c: drop layers on the toolbox to create a new image and on the display to copy it to the image's layer stack. * app/layers_dialog.c: drop layer on the "New" button to create an empty layer with the dropped layer's properties, to "Duplicate" to duplicate it and on the trashcan to delete it. Thanks to Andy for the ultra-cool dnd preview pixmap patch. * app/layer.[ch] * app/undo.c: renamed layer_mask() to layer_get_mask(). Prototyped some function headers. * app/disp_callbacks.c: Wheelmouse stuff: Shift+wheel scales the display. * app/airbrush.c * app/eraser.c * app/paint_options.h * app/paintbrush.c * app/pencil.c * app/tool_options.c: moved the "Incremental" toggle to the PaintOptions structure because it is used more often now.
359 lines
9.3 KiB
C
359 lines
9.3 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include "gdk/gdkkeysyms.h"
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#include "appenv.h"
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#include "cursorutil.h"
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#include "drawable.h"
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#include "errors.h"
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#include "gdisplay.h"
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#include "gimage_mask.h"
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#include "paint_funcs.h"
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#include "paint_core.h"
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#include "paint_options.h"
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#include "palette.h"
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#include "eraser.h"
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#include "selection.h"
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#include "tool_options_ui.h"
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#include "tools.h"
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#include "libgimp/gimpintl.h"
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/* Defaults */
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#define ERASER_DEFAULT_HARD FALSE
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#define ERASER_DEFAULT_INCREMENTAL FALSE
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#define ERASER_DEFAULT_ANTI_ERASE FALSE
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/* the eraser structures */
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typedef struct _EraserOptions EraserOptions;
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struct _EraserOptions
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{
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PaintOptions paint_options;
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gboolean hard;
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gboolean hard_d;
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GtkWidget *hard_w;
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gboolean anti_erase;
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gboolean anti_erase_d;
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GtkWidget *anti_erase_w;
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};
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/* the eraser tool options */
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static EraserOptions *eraser_options = NULL;
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/* local variables */
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static gboolean non_gui_hard;
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static gboolean non_gui_incremental;
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static gboolean non_gui_anti_erase;
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/* forward function declarations */
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static void eraser_motion (PaintCore *, GimpDrawable *,
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gboolean, gboolean, gboolean);
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/* functions */
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static void
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eraser_options_reset (void)
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{
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EraserOptions *options = eraser_options;
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paint_options_reset ((PaintOptions *) options);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->hard_w),
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options->hard_d);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->anti_erase_w),
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options->anti_erase_d);
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}
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static EraserOptions *
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eraser_options_new (void)
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{
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EraserOptions *options;
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GtkWidget *vbox;
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/* the new eraser tool options structure */
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options = (EraserOptions *) g_malloc (sizeof (EraserOptions));
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paint_options_init ((PaintOptions *) options,
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ERASER,
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eraser_options_reset);
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options->hard = options->hard_d = ERASER_DEFAULT_HARD;
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options->anti_erase = options->anti_erase_d = ERASER_DEFAULT_ANTI_ERASE;
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/* the main vbox */
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vbox = ((ToolOptions *) options)->main_vbox;
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/* the hard toggle */
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options->hard_w = gtk_check_button_new_with_label (_("Hard edge"));
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gtk_box_pack_start (GTK_BOX (vbox), options->hard_w, FALSE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (options->hard_w), "toggled",
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(GtkSignalFunc) tool_options_toggle_update,
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&options->hard);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->hard_w),
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options->hard_d);
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gtk_widget_show (options->hard_w);
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/* the anti_erase toggle */
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options->anti_erase_w = gtk_check_button_new_with_label (_("Anti erase"));
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gtk_box_pack_start (GTK_BOX (vbox), options->anti_erase_w, FALSE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (options->anti_erase_w), "toggled",
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(GtkSignalFunc) tool_options_toggle_update,
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&options->anti_erase);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->anti_erase_w),
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options->anti_erase_d);
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gtk_widget_show (options->anti_erase_w);
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return options;
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}
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static void
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eraser_modifier_key_func (Tool *tool,
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GdkEventKey *kevent,
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gpointer gdisp_ptr)
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{
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switch (kevent->keyval)
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{
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case GDK_Alt_L: case GDK_Alt_R:
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break;
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case GDK_Shift_L: case GDK_Shift_R:
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break;
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case GDK_Control_L: case GDK_Control_R:
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (eraser_options->anti_erase_w), ! eraser_options->anti_erase);
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break;
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}
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}
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void *
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eraser_paint_func (PaintCore *paint_core,
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GimpDrawable *drawable,
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int state)
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{
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switch (state)
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{
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case INIT_PAINT :
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break;
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case MOTION_PAINT :
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eraser_motion (paint_core,
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drawable,
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eraser_options->hard,
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eraser_options->paint_options.incremental,
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eraser_options->anti_erase);
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break;
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case FINISH_PAINT :
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break;
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default :
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break;
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}
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return NULL;
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}
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static void
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eraser_cursor_update (Tool *tool,
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GdkEventMotion *mevent,
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gpointer gdisp_ptr)
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{
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GDisplay *gdisp;
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Layer *layer;
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GdkCursorType ctype = GDK_TOP_LEFT_ARROW;
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int x, y;
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gdisp = (GDisplay *) gdisp_ptr;
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gdisplay_untransform_coords (gdisp, mevent->x, mevent->y, &x, &y,
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FALSE, FALSE);
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if ((layer = gimage_get_active_layer (gdisp->gimage)))
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{
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int off_x, off_y;
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drawable_offsets (GIMP_DRAWABLE(layer), &off_x, &off_y);
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if (x >= off_x && y >= off_y &&
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x < (off_x + drawable_width (GIMP_DRAWABLE(layer))) &&
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y < (off_y + drawable_height (GIMP_DRAWABLE(layer))))
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{
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if (gimage_mask_is_empty (gdisp->gimage) || gimage_mask_value (gdisp->gimage, x, y))
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{
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if (eraser_options->anti_erase)
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ctype = GDK_PENCIL; /* ANTI_ERASER CURSOR */
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else
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ctype = GDK_PENCIL; /* ERASER CURSOR */
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}
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}
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}
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gdisplay_install_tool_cursor (gdisp, ctype);
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}
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Tool *
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tools_new_eraser ()
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{
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Tool * tool;
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PaintCore * private;
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/* The tool options */
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if (! eraser_options)
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{
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eraser_options = eraser_options_new ();
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tools_register (ERASER, (ToolOptions *) eraser_options);
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}
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tool = paint_core_new (ERASER);
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private = (PaintCore *) tool->private;
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private->paint_func = eraser_paint_func;
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tool->modifier_key_func = eraser_modifier_key_func;
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tool->cursor_update_func = eraser_cursor_update;
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return tool;
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}
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void
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tools_free_eraser (tool)
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Tool * tool;
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{
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paint_core_free (tool);
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}
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static void
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eraser_motion (PaintCore *paint_core,
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GimpDrawable *drawable,
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gboolean hard,
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gboolean incremental,
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gboolean anti_erase)
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{
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GImage *gimage;
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gint opacity;
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TempBuf * area;
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unsigned char col[MAX_CHANNELS];
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if (! (gimage = drawable_gimage (drawable)))
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return;
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gimage_get_background (gimage, drawable, col);
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/* Get a region which can be used to paint to */
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if (! (area = paint_core_get_paint_area (paint_core, drawable)))
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return;
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/* set the alpha channel */
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col[area->bytes - 1] = OPAQUE_OPACITY;
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/* color the pixels */
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color_pixels (temp_buf_data (area), col,
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area->width * area->height, area->bytes);
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opacity = 255 * gimp_context_get_opacity (NULL) * (paint_core->curpressure / 0.5);
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if(opacity > OPAQUE_OPACITY) opacity=OPAQUE_OPACITY;
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/* paste the newly painted canvas to the gimage which is being worked on */
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paint_core_paste_canvas (paint_core, drawable, opacity,
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(int) (gimp_context_get_opacity (NULL) * 255),
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anti_erase ? ANTI_ERASE_MODE : ERASE_MODE,
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hard ? HARD : SOFT,
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incremental ? INCREMENTAL : CONSTANT);
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}
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static void *
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eraser_non_gui_paint_func (PaintCore *paint_core,
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GimpDrawable *drawable,
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int state)
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{
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eraser_motion (paint_core, drawable, non_gui_hard, non_gui_incremental, non_gui_anti_erase);
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return NULL;
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}
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gboolean
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eraser_non_gui_default (GimpDrawable *drawable,
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int num_strokes,
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double *stroke_array)
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{
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gboolean hardness = ERASER_DEFAULT_HARD;
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gboolean method = ERASER_DEFAULT_INCREMENTAL;
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gboolean anti_erase = ERASER_DEFAULT_ANTI_ERASE;
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EraserOptions *options = eraser_options;
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if (options)
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{
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hardness = options->hard;
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method = options->paint_options.incremental;
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anti_erase = options->anti_erase;
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}
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return eraser_non_gui (drawable, num_strokes, stroke_array,
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hardness, method, anti_erase);
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}
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gboolean
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eraser_non_gui (GimpDrawable *drawable,
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int num_strokes,
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double *stroke_array,
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int hardness,
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int method,
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int anti_erase)
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{
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int i;
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if (paint_core_init (&non_gui_paint_core, drawable,
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stroke_array[0], stroke_array[1]))
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{
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non_gui_hard = hardness;
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non_gui_incremental = method;
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non_gui_anti_erase = anti_erase;
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/* Set the paint core's paint func */
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non_gui_paint_core.paint_func = eraser_non_gui_paint_func;
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non_gui_paint_core.startx = non_gui_paint_core.lastx = stroke_array[0];
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non_gui_paint_core.starty = non_gui_paint_core.lasty = stroke_array[1];
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eraser_non_gui_paint_func (&non_gui_paint_core, drawable, 0);
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for (i = 1; i < num_strokes; i++)
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{
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non_gui_paint_core.curx = stroke_array[i * 2 + 0];
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non_gui_paint_core.cury = stroke_array[i * 2 + 1];
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paint_core_interpolate (&non_gui_paint_core, drawable);
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non_gui_paint_core.lastx = non_gui_paint_core.curx;
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non_gui_paint_core.lasty = non_gui_paint_core.cury;
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}
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/* Finish the painting */
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paint_core_finish (&non_gui_paint_core, drawable, -1);
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/* Cleanup */
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paint_core_cleanup ();
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return TRUE;
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}
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else
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return FALSE;
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}
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