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gimp/app/gui/color-notebook.c
Michael Natterer 368d0efe9b app/color_notebook.[ch] app/color_select.c libgimp/gimpcolorselector.h 
2001-01-15  Michael Natterer  <mitch@gimp.org>

	* app/color_notebook.[ch]
	* app/color_select.c
	* libgimp/gimpcolorselector.h
	* modules/colorsel_gtk.c
	* modules/colorsel_triangle.c
	* modules/colorsel_water.c: use GimpRGB and GimpHSV.

	* libgimp/gimpcolor.c
	* libgimp/gimpcolorspace.[ch]: All rgb_to_hsv functions:

	if r == g == b the difference between the max and min value
	is 0 and we should avoid to divide by it ;-)
2001-01-15 12:20:38 +00:00

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* color_notebook module (C) 1998 Austin Donnelly <austin@greenend.org.uk>
*
* 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 PURPOSE. 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.
*/
#define __COLOR_NOTEBOOK_C__ 1
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gmodule.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "apptypes.h"
#include "color_area.h"
#include "color_notebook.h"
#include "colormaps.h"
#include "gimpdnd.h"
#include "gimpui.h"
#include "libgimp/gimphelpui.h"
#include "libgimp/gimpcolorselector.h"
#include "libgimp/gimpcolorspace.h"
#include "libgimp/gimpintl.h"
#define COLOR_AREA_WIDTH 74
#define COLOR_AREA_HEIGHT 20
typedef enum
{
UPDATE_NOTEBOOK = 1 << 0,
UPDATE_CHANNEL = 1 << 1,
UPDATE_NEW_COLOR = 1 << 2,
UPDATE_ORIG_COLOR = 1 << 3,
UPDATE_CALLER = 1 << 4
} ColorNotebookUpdateType;
struct _ColorNotebook
{
GtkWidget *shell;
GtkWidget *notebook;
GtkWidget *new_color;
GtkWidget *orig_color;
GtkWidget *toggles[7];
GtkObject *slider_data[7];
GtkWidget *hex_entry;
GdkGC *gc;
GimpHSV hsv;
GimpRGB rgb;
GimpRGB orig_rgb;
GimpColorSelectorChannelType active_channel;
ColorNotebookCallback callback;
gpointer client_data;
gboolean wants_updates;
gboolean show_alpha;
ColorSelectorInstance *selectors;
ColorSelectorInstance *cur_page;
};
/* information we keep on each registered colour selector */
typedef struct _ColorSelectorInfo ColorSelectorInfo;
struct _ColorSelectorInfo
{
gchar *name; /* label used in notebook tab */
gchar *help_page;
GimpColorSelectorMethods methods;
gint refs; /* number of instances around */
gboolean active;
GimpColorSelectorFinishedCB death_callback;
gpointer death_data;
ColorSelectorInfo *next;
};
struct _ColorSelectorInstance
{
ColorNotebook *color_notebook;
ColorSelectorInfo *info;
GtkWidget *frame; /* main widget */
gpointer selector_data;
ColorSelectorInstance *next;
};
static void color_notebook_ok_callback (GtkWidget *widget,
gpointer data);
static void color_notebook_cancel_callback (GtkWidget *widget,
gpointer data);
static void color_notebook_update_callback (gpointer data,
const GimpHSV *hsv,
const GimpRGB *rgb);
static void color_notebook_page_switch (GtkWidget *widget,
GtkNotebookPage *page,
guint page_num,
gpointer data);
static void color_notebook_help_func (const gchar *help_data);
static void color_notebook_selector_death (ColorSelectorInfo *info);
static void color_notebook_update (ColorNotebook *cnp,
ColorNotebookUpdateType update);
static void color_notebook_update_notebook (ColorNotebook *cnp);
static void color_notebook_update_channel (ColorNotebook *cnp);
static void color_notebook_update_caller (ColorNotebook *cnp);
static void color_notebook_update_colors (ColorNotebook *cnp,
ColorNotebookUpdateType which);
static void color_notebook_update_rgb_values (ColorNotebook *cnp);
static void color_notebook_update_hsv_values (ColorNotebook *cnp);
static void color_notebook_update_scales (ColorNotebook *cnp,
gint skip);
static gboolean color_notebook_color_events (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void color_notebook_toggle_update (GtkWidget *widget,
gpointer data);
static void color_notebook_scale_update (GtkAdjustment *adjustment,
gpointer data);
static gint color_notebook_hex_entry_events (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void color_notebook_drag_new_color (GtkWidget *widget,
GimpRGB *color,
gpointer data);
static void color_notebook_drop_new_color (GtkWidget *widget,
GimpRGB *color,
gpointer data);
static void color_notebook_drag_old_color (GtkWidget *widget,
GimpRGB *color,
gpointer data);
/* master list of all registered colour selectors */
static ColorSelectorInfo *selector_info = NULL;
/* dnd stuff */
static GtkTargetEntry color_notebook_target_table[] =
{
GIMP_TARGET_COLOR
};
static guint n_color_notebook_targets = (sizeof (color_notebook_target_table) /
sizeof (color_notebook_target_table[0]));
ColorNotebook *
color_notebook_new (GimpRGB *color,
ColorNotebookCallback callback,
gpointer client_data,
gboolean wants_updates,
gboolean show_alpha)
{
ColorNotebook *cnp;
GtkWidget *main_hbox;
GtkWidget *right_vbox;
GtkWidget *colors_frame;
GtkWidget *hbox;
GtkWidget *table;
GtkWidget *label;
GSList *group;
gchar buffer[16];
ColorSelectorInfo *info;
ColorSelectorInstance *csel;
gint i;
static gchar *toggle_titles[] =
{
N_("H"),
N_("S"),
N_("V"),
N_("R"),
N_("G"),
N_("B"),
N_("A")
};
static gchar *slider_tips[7] =
{
N_("Hue"),
N_("Saturation"),
N_("Value"),
N_("Red"),
N_("Green"),
N_("Blue"),
N_("Alpha")
};
static gdouble slider_initial_vals[] = { 0, 0, 0, 0, 0, 0, 0 };
static gdouble slider_max_vals[] = { 360, 100, 100, 255, 255, 255, 100 };
static gdouble slider_incs[] = { 30, 10, 10, 16, 16, 16, 10 };
g_return_val_if_fail (selector_info != NULL, NULL);
g_return_val_if_fail (color != NULL, NULL);
cnp = g_new0 (ColorNotebook, 1);
cnp->gc = NULL;
cnp->callback = callback;
cnp->client_data = client_data;
cnp->wants_updates = wants_updates;
cnp->show_alpha = show_alpha;
cnp->selectors = NULL;
cnp->cur_page = NULL;
cnp->rgb = *color;
cnp->orig_rgb = *color;
color_notebook_update_hsv_values (cnp);
cnp->shell =
gimp_dialog_new (_("Color Selection"), "color_selection",
color_notebook_help_func, (const gchar *) cnp,
GTK_WIN_POS_NONE,
FALSE, FALSE, FALSE,
wants_updates ? _("Close") : _("OK"),
color_notebook_ok_callback,
cnp, NULL, NULL, TRUE, wants_updates,
wants_updates ? _("Revert to Old Color") : _("Cancel"),
color_notebook_cancel_callback,
cnp, NULL, NULL, FALSE, !wants_updates,
NULL);
main_hbox = gtk_hbox_new (FALSE, 6);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 2);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (cnp->shell)->vbox), main_hbox);
gtk_widget_show (main_hbox);
/* do we actually need a notebook? */
if (selector_info->next)
{
cnp->notebook = gtk_notebook_new ();
gtk_box_pack_start (GTK_BOX (main_hbox), cnp->notebook,
FALSE, FALSE, 0);
gtk_widget_show (cnp->notebook);
}
else /* only one selector */
{
cnp->notebook = NULL;
}
/* create each registered color selector */
info = selector_info;
while (info)
{
if (info->active)
{
csel = g_new (ColorSelectorInstance, 1);
csel->color_notebook = cnp;
csel->info = info;
info->refs++;
csel->frame =
info->methods.new (&cnp->hsv,
&cnp->rgb,
show_alpha,
color_notebook_update_callback, csel,
&csel->selector_data);
gtk_object_set_data (GTK_OBJECT (csel->frame), "gimp_color_notebook",
csel);
if (cnp->notebook)
{
label = gtk_label_new (info->name);
gtk_widget_show (label);
/* hide the frame, so it doesn't get selected by mistake */
gtk_widget_hide (csel->frame);
gtk_notebook_append_page (GTK_NOTEBOOK (cnp->notebook),
csel->frame,
label);
}
else
{
gtk_box_pack_start (GTK_BOX (main_hbox), csel->frame,
FALSE, FALSE, 0);
}
gtk_widget_show (csel->frame);
if (!cnp->cur_page)
cnp->cur_page = csel;
/* link into list of all selectors hanging off the new notebook */
csel->next = cnp->selectors;
cnp->selectors = csel;
}
info = info->next;
}
/* The right vertical box with old/new color area and color space sliders */
right_vbox = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (main_hbox), right_vbox, TRUE, TRUE, 0);
gtk_widget_show (right_vbox);
/* The old/new color area frame and hbox */
colors_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (colors_frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (right_vbox), colors_frame, FALSE, FALSE, 0);
gtk_widget_show (colors_frame);
hbox = gtk_hbox_new (TRUE, 2);
gtk_container_add (GTK_CONTAINER (colors_frame), hbox);
gtk_widget_show (hbox);
/* The new color area */
cnp->new_color = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (cnp->new_color),
COLOR_AREA_WIDTH, COLOR_AREA_HEIGHT);
gtk_widget_set_events (cnp->new_color, GDK_EXPOSURE_MASK);
gtk_signal_connect (GTK_OBJECT (cnp->new_color), "event",
GTK_SIGNAL_FUNC (color_notebook_color_events),
cnp);
gtk_object_set_user_data (GTK_OBJECT (cnp->new_color), cnp);
gtk_box_pack_start (GTK_BOX (hbox), cnp->new_color, TRUE, TRUE, 0);
gtk_widget_show (cnp->new_color);
/* dnd stuff */
gtk_drag_source_set (cnp->new_color,
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
color_notebook_target_table, n_color_notebook_targets,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
gimp_dnd_color_source_set (cnp->new_color, color_notebook_drag_new_color, cnp);
gtk_drag_dest_set (cnp->new_color,
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
color_notebook_target_table, n_color_notebook_targets,
GDK_ACTION_COPY);
gimp_dnd_color_dest_set (cnp->new_color, color_notebook_drop_new_color, cnp);
/* The old color area */
cnp->orig_color = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (cnp->orig_color),
COLOR_AREA_WIDTH, COLOR_AREA_HEIGHT);
gtk_widget_set_events (cnp->orig_color, GDK_EXPOSURE_MASK);
gtk_signal_connect (GTK_OBJECT (cnp->orig_color), "event",
GTK_SIGNAL_FUNC (color_notebook_color_events),
cnp);
gtk_object_set_user_data (GTK_OBJECT (cnp->orig_color), cnp);
gtk_box_pack_start (GTK_BOX (hbox), cnp->orig_color, TRUE, TRUE, 0);
gtk_widget_show (cnp->orig_color);
/* dnd stuff */
gtk_drag_source_set (cnp->orig_color,
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
color_notebook_target_table, n_color_notebook_targets,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
gimp_dnd_color_source_set (cnp->orig_color, color_notebook_drag_old_color,
cnp);
/* The color space sliders, toggle buttons and entries */
table = gtk_table_new (show_alpha ? 7 : 6, 3, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (right_vbox), table, TRUE, TRUE, 0);
gtk_widget_show (table);
group = NULL;
for (i = 0; i < (show_alpha ? 7 : 6); i++)
{
if (i == 6)
{
cnp->toggles[i] = NULL;
label = gtk_label_new (toggle_titles[i]);
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label,
0, 1, i, i + 1, GTK_FILL, GTK_EXPAND, 0, 0);
gtk_widget_show (label);
}
else
{
cnp->toggles[i] =
gtk_radio_button_new_with_label (group, gettext (toggle_titles[i]));
gimp_help_set_help_data (cnp->toggles[i],
gettext (slider_tips[i]), NULL);
group = gtk_radio_button_group (GTK_RADIO_BUTTON (cnp->toggles[i]));
gtk_table_attach (GTK_TABLE (table), cnp->toggles[i],
0, 1, i, i + 1, GTK_FILL, GTK_EXPAND, 0, 0);
gtk_signal_connect (GTK_OBJECT (cnp->toggles[i]), "toggled",
GTK_SIGNAL_FUNC (color_notebook_toggle_update),
cnp);
gtk_widget_show (cnp->toggles[i]);
}
cnp->slider_data[i] = gimp_scale_entry_new (GTK_TABLE (table), 0, i,
NULL,
80, 55,
slider_initial_vals[i],
0.0, slider_max_vals[i],
1.0, slider_incs[i],
0, TRUE, 0.0, 0.0,
gettext (slider_tips[i]),
NULL);
gtk_signal_connect (GTK_OBJECT (cnp->slider_data[i]), "value_changed",
GTK_SIGNAL_FUNC (color_notebook_scale_update),
cnp);
}
/* The hex triplet entry */
hbox = gtk_hbox_new (FALSE, 3);
gtk_box_pack_start (GTK_BOX (right_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
cnp->hex_entry = gtk_entry_new ();
g_snprintf (buffer, sizeof (buffer), "#%.2x%.2x%.2x",
(gint) (color->r * 255.999),
(gint) (color->g * 255.999),
(gint) (color->b * 255.999));
gtk_entry_set_text (GTK_ENTRY (cnp->hex_entry), buffer);
gtk_widget_set_usize (GTK_WIDGET (cnp->hex_entry), 75, 0);
gtk_box_pack_end (GTK_BOX (hbox), cnp->hex_entry, FALSE, FALSE, 2);
gtk_signal_connect (GTK_OBJECT (cnp->hex_entry), "focus_out_event",
GTK_SIGNAL_FUNC (color_notebook_hex_entry_events),
cnp);
gtk_signal_connect (GTK_OBJECT (cnp->hex_entry), "key_press_event",
GTK_SIGNAL_FUNC (color_notebook_hex_entry_events),
cnp);
gtk_widget_show (cnp->hex_entry);
label = gtk_label_new (_("Hex Triplet:"));
gtk_box_pack_end (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
color_notebook_update_scales (cnp, -1);
gtk_widget_show (cnp->shell);
/* this must come after showing the widget, otherwise we get a
* switch_page signal for a non-visible color selector, which is bad
* news.
*/
if (cnp->notebook)
{
gtk_signal_connect (GTK_OBJECT (cnp->notebook), "switch_page",
GTK_SIGNAL_FUNC (color_notebook_page_switch),
cnp);
}
return cnp;
}
void
color_notebook_show (ColorNotebook *cnp)
{
g_return_if_fail (cnp != NULL);
if (! GTK_WIDGET_VISIBLE (cnp->shell))
gtk_widget_show (cnp->shell);
else
gdk_window_raise (cnp->shell->window);
}
void
color_notebook_hide (ColorNotebook *cnp)
{
g_return_if_fail (cnp != NULL);
gtk_widget_hide (cnp->shell);
}
void
color_notebook_free (ColorNotebook *cnp)
{
ColorSelectorInstance *csel, *next;
g_return_if_fail (cnp != NULL);
gtk_widget_destroy (cnp->shell);
/* call the free functions for all the color selectors */
csel = cnp->selectors;
while (csel)
{
next = csel->next;
csel->info->methods.free (csel->selector_data);
csel->info->refs--;
if (csel->info->refs == 0 && !csel->info->active)
color_notebook_selector_death (csel->info);
g_free (csel);
csel = next;
}
g_free (cnp);
}
void
color_notebook_set_color (ColorNotebook *cnp,
GimpRGB *color)
{
g_return_if_fail (cnp != NULL);
g_return_if_fail (color != NULL);
cnp->rgb = *color;
cnp->orig_rgb = *color;
color_notebook_update_hsv_values (cnp);
color_notebook_update_scales (cnp, -1);
color_notebook_update (cnp,
UPDATE_NOTEBOOK |
UPDATE_ORIG_COLOR |
UPDATE_NEW_COLOR);
}
/*
* Called by a color selector on user selection of a color
*/
static void
color_notebook_update_callback (gpointer data,
const GimpHSV *hsv,
const GimpRGB *rgb)
{
ColorSelectorInstance *csel;
ColorNotebook *cnp;
g_return_if_fail (data != NULL);
g_return_if_fail (hsv != NULL);
g_return_if_fail (rgb != NULL);
csel = (ColorSelectorInstance *) data;
cnp = csel->color_notebook;
cnp->hsv = *hsv;
cnp->rgb = *rgb;
color_notebook_update_scales (cnp, -1);
color_notebook_update (cnp,
UPDATE_NEW_COLOR |
UPDATE_CALLER);
}
static void
color_notebook_ok_callback (GtkWidget *widget,
gpointer data)
{
ColorNotebook *cnp;
cnp = (ColorNotebook *) data;
if (cnp->callback)
{
(* cnp->callback) (&cnp->rgb,
COLOR_NOTEBOOK_OK,
cnp->client_data);
}
}
static void
color_notebook_cancel_callback (GtkWidget *widget,
gpointer data)
{
ColorNotebook *cnp;
cnp = (ColorNotebook *) data;
if (cnp->callback)
{
(* cnp->callback) (&cnp->orig_rgb,
COLOR_NOTEBOOK_CANCEL,
cnp->client_data);
}
}
static void
color_notebook_page_switch (GtkWidget *widget,
GtkNotebookPage *page,
guint page_num,
gpointer data)
{
ColorNotebook *cnp;
ColorSelectorInstance *csel;
cnp = (ColorNotebook *) data;
csel = gtk_object_get_data (GTK_OBJECT (page->child), "gimp_color_notebook");
g_return_if_fail (cnp != NULL && csel != NULL);
cnp->cur_page = csel;
color_notebook_update (cnp, UPDATE_CHANNEL | UPDATE_NOTEBOOK);
}
static void
color_notebook_help_func (const gchar *data)
{
ColorNotebook *cnp;
gchar *help_path;
cnp = (ColorNotebook *) data;
help_path = g_strconcat ("dialogs/color_selectors/",
cnp->cur_page->info->help_page,
NULL);
gimp_standard_help_func (help_path);
g_free (help_path);
}
/**************************/
/* Registration functions */
G_MODULE_EXPORT
GimpColorSelectorID
gimp_color_selector_register (const gchar *name,
const gchar *help_page,
GimpColorSelectorMethods *methods)
{
ColorSelectorInfo *info;
/* check the name is unique */
info = selector_info;
while (info)
{
if (!strcmp (info->name, name))
return NULL;
info = info->next;
}
info = g_new (ColorSelectorInfo, 1);
info->name = g_strdup (name);
info->help_page = g_strdup (help_page);
info->methods = *methods;
info->refs = 0;
info->active = TRUE;
info->next = selector_info;
selector_info = info;
return info;
}
G_MODULE_EXPORT
gboolean
gimp_color_selector_unregister (GimpColorSelectorID id,
GimpColorSelectorFinishedCB callback,
gpointer data)
{
ColorSelectorInfo *info;
info = selector_info;
while (info)
{
if (info == id)
{
info->active = FALSE;
info->death_callback = callback;
info->death_data = data;
if (info->refs == 0)
color_notebook_selector_death (info);
return TRUE;
}
info = info->next;
}
g_warning ("unknown color selector id %p", id);
return FALSE;
}
static void
color_notebook_selector_death (ColorSelectorInfo *info)
{
ColorSelectorInfo *here, *prev;
here = selector_info;
prev = NULL;
while (here)
{
if (here == info)
{
if (prev)
prev->next = info->next;
else
selector_info = info->next;
if (info->death_callback)
(*info->death_callback) (info->death_data);
g_free (info->name);
g_free (info);
return;
}
prev = here;
here = here->next;
}
g_warning ("color selector %p not found, can't happen!", info);
}
static void
color_notebook_update (ColorNotebook *cnp,
ColorNotebookUpdateType update)
{
if (!cnp)
return;
if (update & UPDATE_NOTEBOOK)
color_notebook_update_notebook (cnp);
if (update & UPDATE_CHANNEL)
color_notebook_update_channel (cnp);
if (update & UPDATE_NEW_COLOR)
color_notebook_update_colors (cnp, UPDATE_NEW_COLOR);
if (update & UPDATE_ORIG_COLOR)
color_notebook_update_colors (cnp, UPDATE_ORIG_COLOR);
if (update & UPDATE_CALLER && cnp->wants_updates)
color_notebook_update_caller (cnp);
}
static void
color_notebook_update_notebook (ColorNotebook *cnp)
{
ColorSelectorInstance *csel;
g_return_if_fail (cnp != NULL);
csel = cnp->cur_page;
csel->info->methods.set_color (csel->selector_data,
&cnp->hsv,
&cnp->rgb);
}
static void
color_notebook_update_channel (ColorNotebook *cnp)
{
ColorSelectorInstance *csel;
g_return_if_fail (cnp != NULL);
csel = cnp->cur_page;
csel->info->methods.set_channel (csel->selector_data,
cnp->active_channel);
}
static void
color_notebook_update_caller (ColorNotebook *cnp)
{
if (cnp && cnp->callback)
{
(* cnp->callback) (&cnp->rgb,
COLOR_NOTEBOOK_UPDATE,
cnp->client_data);
}
}
static void
color_notebook_update_colors (ColorNotebook *cnp,
ColorNotebookUpdateType which)
{
GdkWindow *window;
GdkColor color;
guchar red, green, blue;
gint width, height;
if (!cnp)
return;
if (which == UPDATE_ORIG_COLOR)
{
window = cnp->orig_color->window;
gimp_rgb_get_uchar (&cnp->orig_rgb, &red, &green, &blue);
}
else if (which == UPDATE_NEW_COLOR)
{
window = cnp->new_color->window;
gimp_rgb_get_uchar (&cnp->rgb, &red, &green, &blue);
}
else
{
return;
}
/* if we haven't yet been realized, there's no need to redraw
* anything.
*/
if (!window)
return;
color.pixel = get_color (red, green, blue);
gdk_window_get_size (window, &width, &height);
if (cnp->gc)
{
color_area_draw_rect (window, cnp->gc,
0, 0, width, height,
red, green, blue);
}
}
static void
color_notebook_update_rgb_values (ColorNotebook *cnp)
{
if (! cnp)
return;
gimp_hsv_to_rgb (&cnp->hsv, &cnp->rgb);
}
static void
color_notebook_update_hsv_values (ColorNotebook *cnp)
{
if (! cnp)
return;
gimp_rgb_to_hsv (&cnp->rgb, &cnp->hsv);
}
static void
color_notebook_update_scales (ColorNotebook *cnp,
gint skip)
{
gint values[7];
gchar buffer[16];
gint i;
if (! cnp)
return;
values[GIMP_COLOR_SELECTOR_HUE] = (gint) (cnp->hsv.h * 360.999);
values[GIMP_COLOR_SELECTOR_SATURATION] = (gint) (cnp->hsv.s * 100.999);
values[GIMP_COLOR_SELECTOR_VALUE] = (gint) (cnp->hsv.v * 100.999);
values[GIMP_COLOR_SELECTOR_RED] = (gint) (cnp->rgb.r * 255.999);
values[GIMP_COLOR_SELECTOR_GREEN] = (gint) (cnp->rgb.g * 255.999);
values[GIMP_COLOR_SELECTOR_BLUE] = (gint) (cnp->rgb.b * 255.999);
values[GIMP_COLOR_SELECTOR_ALPHA] = (gint) (cnp->rgb.a * 100.999);
for (i = 0; i < (cnp->show_alpha ? 7 : 6); i++)
if (i != skip)
{
gtk_signal_handler_block_by_data (GTK_OBJECT (cnp->slider_data[i]),
cnp);
gtk_adjustment_set_value (GTK_ADJUSTMENT (cnp->slider_data[i]),
values[i]);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (cnp->slider_data[i]),
cnp);
}
g_snprintf (buffer, sizeof (buffer), "#%.2x%.2x%.2x",
values[GIMP_COLOR_SELECTOR_RED],
values[GIMP_COLOR_SELECTOR_GREEN],
values[GIMP_COLOR_SELECTOR_BLUE]);
gtk_entry_set_text (GTK_ENTRY (cnp->hex_entry), buffer);
}
static gboolean
color_notebook_color_events (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
ColorNotebook *cnp;
cnp = (ColorNotebook *) data;
if (! cnp)
return FALSE;
switch (event->type)
{
case GDK_EXPOSE:
if (!cnp->gc)
cnp->gc = gdk_gc_new (widget->window);
if (widget == cnp->new_color)
color_notebook_update (cnp, UPDATE_NEW_COLOR);
else if (widget == cnp->orig_color)
color_notebook_update (cnp, UPDATE_ORIG_COLOR);
break;
default:
break;
}
return FALSE;
}
static void
color_notebook_toggle_update (GtkWidget *widget,
gpointer data)
{
ColorNotebook *cnp;
gint i;
if (! GTK_TOGGLE_BUTTON (widget)->active)
return;
cnp = (ColorNotebook *) data;
if (!cnp)
return;
for (i = 0; i < 6; i++)
if (widget == cnp->toggles[i])
cnp->active_channel = (GimpColorSelectorChannelType) i;
color_notebook_update (cnp, UPDATE_CHANNEL);
}
static void
color_notebook_scale_update (GtkAdjustment *adjustment,
gpointer data)
{
ColorNotebook *cnp;
gint i;
cnp = (ColorNotebook *) data;
if (!cnp)
return;
for (i = 0; i < (cnp->show_alpha ? 7 : 6); i++)
if (cnp->slider_data[i] == GTK_OBJECT (adjustment))
break;
switch (i)
{
case GIMP_COLOR_SELECTOR_HUE:
cnp->hsv.h = GTK_ADJUSTMENT (adjustment)->value / 360.0;
break;
case GIMP_COLOR_SELECTOR_SATURATION:
cnp->hsv.s = GTK_ADJUSTMENT (adjustment)->value / 100.0;
break;
case GIMP_COLOR_SELECTOR_VALUE:
cnp->hsv.v = GTK_ADJUSTMENT (adjustment)->value / 100.0;
break;
case GIMP_COLOR_SELECTOR_RED:
cnp->rgb.r = GTK_ADJUSTMENT (adjustment)->value / 255.0;
break;
case GIMP_COLOR_SELECTOR_GREEN:
cnp->rgb.g = GTK_ADJUSTMENT (adjustment)->value / 255.0;
break;
case GIMP_COLOR_SELECTOR_BLUE:
cnp->rgb.b = GTK_ADJUSTMENT (adjustment)->value / 255.0;
break;
case GIMP_COLOR_SELECTOR_ALPHA:
cnp->hsv.a = cnp->rgb.a = GTK_ADJUSTMENT (adjustment)->value / 100.0;
break;
}
if ((i >= GIMP_COLOR_SELECTOR_HUE) && (i <= GIMP_COLOR_SELECTOR_VALUE))
{
color_notebook_update_rgb_values (cnp);
}
else if ((i >= GIMP_COLOR_SELECTOR_RED) && (i <= GIMP_COLOR_SELECTOR_BLUE))
{
color_notebook_update_hsv_values (cnp);
}
color_notebook_update_scales (cnp, i);
color_notebook_update (cnp,
UPDATE_NOTEBOOK |
UPDATE_NEW_COLOR |
UPDATE_CALLER);
}
static gint
color_notebook_hex_entry_events (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
ColorNotebook *cnp;
gchar buffer[8];
gchar *hex_color;
guint hex_rgb;
cnp = (ColorNotebook *) data;
if (!cnp)
return FALSE;
switch (event->type)
{
case GDK_KEY_PRESS:
if (((GdkEventKey *) event)->keyval != GDK_Return)
break;
/* else fall through */
case GDK_FOCUS_CHANGE:
hex_color = g_strdup (gtk_entry_get_text (GTK_ENTRY (cnp->hex_entry)));
g_snprintf (buffer, sizeof (buffer), "#%.2x%.2x%.2x",
(gint) (cnp->rgb.r * 255.999),
(gint) (cnp->rgb.g * 255.999),
(gint) (cnp->rgb.b * 255.999));
if ((strlen (hex_color) == 7) &&
(g_strcasecmp (buffer, hex_color) != 0))
{
if ((sscanf (hex_color, "#%x", &hex_rgb) == 1) &&
(hex_rgb < (1 << 24)))
{
cnp->rgb.r = ((hex_rgb & 0xff0000) >> 16) / 255.0;
cnp->rgb.g = ((hex_rgb & 0x00ff00) >> 8) / 255.0;
cnp->rgb.b = ((hex_rgb & 0x0000ff)) / 255.0;
color_notebook_update_hsv_values (cnp);
color_notebook_update_scales (cnp, -1);
color_notebook_update (cnp,
UPDATE_NOTEBOOK |
UPDATE_NEW_COLOR |
UPDATE_CALLER);
}
}
g_free (hex_color);
break;
default:
/* do nothing */
break;
}
return FALSE;
}
static void
color_notebook_drag_new_color (GtkWidget *widget,
GimpRGB *color,
gpointer data)
{
ColorNotebook *cnp;
cnp = (ColorNotebook *) data;
*color = cnp->rgb;
}
static void
color_notebook_drop_new_color (GtkWidget *widget,
GimpRGB *color,
gpointer data)
{
ColorNotebook *cnp;
cnp = (ColorNotebook *) data;
cnp->rgb = *color;
color_notebook_update_hsv_values (cnp);
color_notebook_update_scales (cnp, -1);
color_notebook_update (cnp,
UPDATE_NOTEBOOK |
UPDATE_NEW_COLOR |
UPDATE_CALLER);
}
static void
color_notebook_drag_old_color (GtkWidget *widget,
GimpRGB *color,
gpointer data)
{
ColorNotebook *cnp;
cnp = (ColorNotebook *) data;
*color = cnp->orig_rgb;
}
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