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gimp/libgimpwidgets/gimpcolorselection.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpcolorselection.c
* Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "gimpwidgetstypes.h"
#include "gimpcolorarea.h"
#include "gimpcolornotebook.h"
#include "gimpcolorscales.h"
#include "gimpcolorselect.h"
#include "gimpcolorselection.h"
#include "gimphelpui.h"
#include "gimpstock.h"
#include "gimpwidgets.h"
#include "gimpwidgets-private.h"
#include "gimpwidgetsmarshal.h"
#include "libgimp/libgimp-intl.h"
#define COLOR_AREA_SIZE 20
typedef enum
{
UPDATE_NOTEBOOK = 1 << 0,
UPDATE_SCALES = 1 << 1,
UPDATE_NEW_COLOR = 1 << 2
} UpdateType;
enum
{
COLOR_CHANGED,
LAST_SIGNAL
};
static void gimp_color_selection_class_init (GimpColorSelectionClass *klass);
static void gimp_color_selection_init (GimpColorSelection *selection);
static void gimp_color_selection_switch_page (GtkWidget *widget,
GtkNotebookPage *page,
guint page_num,
GimpColorSelection *selection);
static void gimp_color_selection_notebook_changed (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv,
GimpColorSelection *selection);
static void gimp_color_selection_scales_changed (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv,
GimpColorSelection *selection);
static void gimp_color_selection_channel_changed (GimpColorSelector *selector,
GimpColorSelectorChannel channel,
GimpColorSelection *selection);
static void gimp_color_selection_new_color_changed (GtkWidget *widget,
GimpColorSelection *selection);
static void gimp_color_selection_update (GimpColorSelection *selection,
UpdateType update);
static GtkVBoxClass *parent_class = NULL;
static guint selection_signals[LAST_SIGNAL] = { 0 };
GType
gimp_color_selection_get_type (void)
{
static GType selection_type = 0;
if (! selection_type)
{
static const GTypeInfo selection_info =
{
sizeof (GimpColorSelectionClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_color_selection_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpColorSelection),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_color_selection_init,
};
selection_type = g_type_register_static (GTK_TYPE_VBOX,
"GimpColorSelection",
&selection_info, 0);
}
return selection_type;
}
static void
gimp_color_selection_class_init (GimpColorSelectionClass *klass)
{
parent_class = g_type_class_peek_parent (klass);
selection_signals[COLOR_CHANGED] =
g_signal_new ("color_changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorSelectionClass, color_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
klass->color_changed = NULL;
}
static void
gimp_color_selection_init (GimpColorSelection *selection)
{
GtkWidget *main_hbox;
GtkWidget *frame;
GtkWidget *table;
selection->show_alpha = TRUE;
gimp_rgba_set (&selection->rgb, 0.0, 0.0, 0.0, 1.0);
gimp_rgb_to_hsv (&selection->rgb, &selection->hsv);
selection->channel = GIMP_COLOR_SELECTOR_HUE;
main_hbox = gtk_hbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (selection), main_hbox);
gtk_widget_show (main_hbox);
/* The left vbox with the notebook */
selection->left_vbox = gtk_vbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (main_hbox), selection->left_vbox,
TRUE, TRUE, 0);
gtk_widget_show (selection->left_vbox);
if (_gimp_ensure_modules_func)
{
g_type_class_ref (GIMP_TYPE_COLOR_SELECT);
_gimp_ensure_modules_func ();
}
selection->notebook = gimp_color_selector_new (GIMP_TYPE_COLOR_NOTEBOOK,
&selection->rgb,
&selection->hsv,
selection->channel);
if (_gimp_ensure_modules_func)
g_type_class_unref (g_type_class_peek (GIMP_TYPE_COLOR_SELECT));
gimp_color_selector_set_toggles_visible
(GIMP_COLOR_SELECTOR (selection->notebook), FALSE);
gtk_box_pack_start (GTK_BOX (selection->left_vbox), selection->notebook,
TRUE, TRUE, 0);
gtk_widget_show (selection->notebook);
g_signal_connect (selection->notebook, "color_changed",
G_CALLBACK (gimp_color_selection_notebook_changed),
selection);
g_signal_connect (GIMP_COLOR_NOTEBOOK (selection->notebook)->notebook,
"switch_page",
G_CALLBACK (gimp_color_selection_switch_page),
selection);
/* The table for the color_areas */
table = gtk_table_new (2, 2, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_box_pack_end (GTK_BOX (selection->left_vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
/* The new color area */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_size_request (frame, -1, COLOR_AREA_SIZE);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Current:"), 1.0, 0.5,
frame, 1, FALSE);
selection->new_color = gimp_color_area_new (&selection->rgb,
selection->show_alpha ?
GIMP_COLOR_AREA_SMALL_CHECKS :
GIMP_COLOR_AREA_FLAT,
GDK_BUTTON1_MASK |
GDK_BUTTON2_MASK);
gtk_container_add (GTK_CONTAINER (frame), selection->new_color);
gtk_widget_show (selection->new_color);
g_signal_connect (selection->new_color, "color_changed",
G_CALLBACK (gimp_color_selection_new_color_changed),
selection);
/* The old color area */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_size_request (frame, -1, COLOR_AREA_SIZE);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Old:"), 1.0, 0.5,
frame, 1, FALSE);
selection->old_color = gimp_color_area_new (&selection->rgb,
selection->show_alpha ?
GIMP_COLOR_AREA_SMALL_CHECKS :
GIMP_COLOR_AREA_FLAT,
GDK_BUTTON1_MASK |
GDK_BUTTON2_MASK);
gtk_drag_dest_unset (selection->old_color);
gtk_container_add (GTK_CONTAINER (frame), selection->old_color);
gtk_widget_show (selection->old_color);
/* The right vbox with color scales */
selection->right_vbox = gtk_vbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (main_hbox), selection->right_vbox,
TRUE, TRUE, 0);
gtk_widget_show (selection->right_vbox);
selection->scales = gimp_color_selector_new (GIMP_TYPE_COLOR_SCALES,
&selection->rgb,
&selection->hsv,
selection->channel);
gimp_color_selector_set_toggles_visible
(GIMP_COLOR_SELECTOR (selection->scales), TRUE);
gimp_color_selector_set_show_alpha (GIMP_COLOR_SELECTOR (selection->scales),
selection->show_alpha);
gtk_box_pack_start (GTK_BOX (selection->right_vbox), selection->scales,
TRUE, TRUE, 0);
gtk_widget_show (selection->scales);
g_signal_connect (selection->scales, "channel_changed",
G_CALLBACK (gimp_color_selection_channel_changed),
selection);
g_signal_connect (selection->scales, "color_changed",
G_CALLBACK (gimp_color_selection_scales_changed),
selection);
}
/**
* gimp_color_selection_new:
*
* Creates a new #GimpColorSelection widget.
*
* Return value: The new #GimpColorSelection widget.
**/
GtkWidget *
gimp_color_selection_new (void)
{
GimpColorSelection *selection;
selection = g_object_new (GIMP_TYPE_COLOR_SELECTION, NULL);
return GTK_WIDGET (selection);
}
/**
* gimp_color_selection_set_show_alpha:
* @selection: A #GimpColorSelection widget.
* @show_alpha: The new @show_alpha setting.
*
* Sets the @show_alpha property of the @selection widget.
**/
void
gimp_color_selection_set_show_alpha (GimpColorSelection *selection,
gboolean show_alpha)
{
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
if (show_alpha != selection->show_alpha)
{
selection->show_alpha = show_alpha ? TRUE : FALSE;
gimp_color_selector_set_show_alpha
(GIMP_COLOR_SELECTOR (selection->notebook), selection->show_alpha);
gimp_color_selector_set_show_alpha
(GIMP_COLOR_SELECTOR (selection->scales), selection->show_alpha);
gimp_color_area_set_type (GIMP_COLOR_AREA (selection->new_color),
selection->show_alpha ?
GIMP_COLOR_AREA_SMALL_CHECKS :
GIMP_COLOR_AREA_FLAT);
gimp_color_area_set_type (GIMP_COLOR_AREA (selection->old_color),
selection->show_alpha ?
GIMP_COLOR_AREA_SMALL_CHECKS :
GIMP_COLOR_AREA_FLAT);
}
}
/**
* gimp_color_selection_get_show_alpha:
* @selection: A #GimpColorSelection widget.
*
* Returns the @selection's @show_alpha property.
*
* Return value: #TRUE if the #GimpColorSelection has alpha controls.
**/
gboolean
gimp_color_selection_get_show_alpha (GimpColorSelection *selection)
{
g_return_val_if_fail (GIMP_IS_COLOR_SELECTION (selection), FALSE);
return selection->show_alpha;
}
/**
* gimp_color_selection_set_color:
* @selection: A #GimpColorSelection widget.
* @color: The @color to set as current color.
*
* Sets the #GimpColorSelection's current color to the new @color.
**/
void
gimp_color_selection_set_color (GimpColorSelection *selection,
const GimpRGB *color)
{
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
g_return_if_fail (color != NULL);
selection->rgb = *color;
gimp_rgb_to_hsv (&selection->rgb, &selection->hsv);
gimp_color_selection_update (selection,
UPDATE_NOTEBOOK |
UPDATE_SCALES |
UPDATE_NEW_COLOR);
gimp_color_selection_color_changed (selection);
}
/**
* gimp_color_selection_get_color:
* @selection: A #GimpColorSelection widget.
* @color: Return location for the @selection's current @color.
*
* This function returns the #GimpColorSelection's current color.
**/
void
gimp_color_selection_get_color (GimpColorSelection *selection,
GimpRGB *color)
{
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
g_return_if_fail (color != NULL);
*color = selection->rgb;
}
/**
* gimp_color_selection_set_old_color:
* @selection: A #GimpColorSelection widget.
* @color: The @color to set as old color.
*
* Sets the #GimpColorSelection's old color.
**/
void
gimp_color_selection_set_old_color (GimpColorSelection *selection,
const GimpRGB *color)
{
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
g_return_if_fail (color != NULL);
gimp_color_area_set_color (GIMP_COLOR_AREA (selection->old_color), color);
}
/**
* gimp_color_selection_get_old_color:
* @selection: A #GimpColorSelection widget.
* @color: Return location for the @selection's old @color.
*
* This function returns the #GimpColorSelection's old color.
**/
void
gimp_color_selection_get_old_color (GimpColorSelection *selection,
GimpRGB *color)
{
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
g_return_if_fail (color != NULL);
gimp_color_area_get_color (GIMP_COLOR_AREA (selection->old_color), color);
}
/**
* gimp_color_selection_reset:
* @selection: A #GimpColorSelection widget.
*
* Sets the #GimpColorSelection's current color to its old color.
**/
void
gimp_color_selection_reset (GimpColorSelection *selection)
{
GimpRGB color;
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
gimp_color_area_get_color (GIMP_COLOR_AREA (selection->old_color), &color);
gimp_color_selection_set_color (selection, &color);
}
/**
* gimp_color_selection_color_changed:
* @selection: A #GimpColorSelection widget.
*
* Emits the "color_changed" signal.
**/
void
gimp_color_selection_color_changed (GimpColorSelection *selection)
{
g_return_if_fail (GIMP_IS_COLOR_SELECTION (selection));
g_signal_emit (selection, selection_signals[COLOR_CHANGED], 0);
}
/* private functions */
static void
gimp_color_selection_switch_page (GtkWidget *widget,
GtkNotebookPage *page,
guint page_num,
GimpColorSelection *selection)
{
GimpColorNotebook *notebook;
gboolean sensitive;
notebook = GIMP_COLOR_NOTEBOOK (selection->notebook);
sensitive =
(GIMP_COLOR_SELECTOR_GET_CLASS (notebook->cur_page)->set_channel != NULL);
gimp_color_selector_set_toggles_sensitive
(GIMP_COLOR_SELECTOR (selection->scales), sensitive);
}
static void
gimp_color_selection_notebook_changed (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv,
GimpColorSelection *selection)
{
selection->hsv = *hsv;
selection->rgb = *rgb;
gimp_color_selection_update (selection, UPDATE_SCALES | UPDATE_NEW_COLOR);
gimp_color_selection_color_changed (selection);
}
static void
gimp_color_selection_scales_changed (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv,
GimpColorSelection *selection)
{
selection->rgb = *rgb;
selection->hsv = *hsv;
gimp_color_selection_update (selection, UPDATE_NOTEBOOK | UPDATE_NEW_COLOR);
gimp_color_selection_color_changed (selection);
}
static void
gimp_color_selection_channel_changed (GimpColorSelector *selector,
GimpColorSelectorChannel channel,
GimpColorSelection *selection)
{
selection->channel = channel;
gimp_color_selector_set_channel (GIMP_COLOR_SELECTOR (selection->notebook),
selection->channel);
}
static void
gimp_color_selection_new_color_changed (GtkWidget *widget,
GimpColorSelection *selection)
{
gimp_color_area_get_color (GIMP_COLOR_AREA (widget), &selection->rgb);
gimp_rgb_to_hsv (&selection->rgb, &selection->hsv);
gimp_color_selection_update (selection, UPDATE_NOTEBOOK | UPDATE_SCALES);
gimp_color_selection_color_changed (selection);
}
static void
gimp_color_selection_update (GimpColorSelection *selection,
UpdateType update)
{
if (update & UPDATE_NOTEBOOK)
{
g_signal_handlers_block_by_func (selection->notebook,
gimp_color_selection_notebook_changed,
selection);
gimp_color_selector_set_color (GIMP_COLOR_SELECTOR (selection->notebook),
&selection->rgb,
&selection->hsv);
g_signal_handlers_unblock_by_func (selection->notebook,
gimp_color_selection_notebook_changed,
selection);
}
if (update & UPDATE_SCALES)
{
g_signal_handlers_block_by_func (selection->scales,
gimp_color_selection_scales_changed,
selection);
gimp_color_selector_set_color (GIMP_COLOR_SELECTOR (selection->scales),
&selection->rgb,
&selection->hsv);
g_signal_handlers_unblock_by_func (selection->scales,
gimp_color_selection_scales_changed,
selection);
}
if (update & UPDATE_NEW_COLOR)
{
g_signal_handlers_block_by_func (selection->new_color,
gimp_color_selection_new_color_changed,
selection);
gimp_color_area_set_color (GIMP_COLOR_AREA (selection->new_color),
&selection->rgb);
g_signal_handlers_unblock_by_func (selection->new_color,
gimp_color_selection_new_color_changed,
selection);
}
}
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