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gimp/app/widgets/gimpcolorhistory.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcolorhistory.c
* Copyright (C) 2015 Jehan <jehan@girinstud.io>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "core/gimp-palettes.h"
#include "core/gimpcontext.h"
#include "core/gimpmarshal.h"
#include "core/gimppalettemru.h"
#include "gimpcolorhistory.h"
#include "gimp-intl.h"
enum
{
COLOR_SELECTED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_CONTEXT,
PROP_HISTORY_SIZE,
};
#define DEFAULT_HISTORY_SIZE 12
#define COLOR_AREA_SIZE 20
static void gimp_color_history_constructed (GObject *object);
static void gimp_color_history_finalize (GObject *object);
static void gimp_color_history_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_color_history_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_color_history_color_clicked (GtkWidget *widget,
GimpColorHistory *history);
static void gimp_color_history_palette_dirty (GimpPalette *palette,
GimpColorHistory *history);
static void gimp_color_history_color_changed (GtkWidget *widget,
gpointer data);
G_DEFINE_TYPE (GimpColorHistory, gimp_color_history, GTK_TYPE_GRID)
#define parent_class gimp_color_history_parent_class
static guint history_signals[LAST_SIGNAL] = { 0 };
static void
gimp_color_history_class_init (GimpColorHistoryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gimp_color_history_constructed;
object_class->set_property = gimp_color_history_set_property;
object_class->get_property = gimp_color_history_get_property;
object_class->finalize = gimp_color_history_finalize;
history_signals[COLOR_SELECTED] =
g_signal_new ("color-selected",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorHistoryClass, color_selected),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
g_object_class_install_property (object_class, PROP_CONTEXT,
g_param_spec_object ("context", NULL, NULL,
GIMP_TYPE_CONTEXT,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_HISTORY_SIZE,
g_param_spec_int ("history-size",
NULL, NULL,
2, G_MAXINT,
DEFAULT_HISTORY_SIZE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (klass), "GimpColorHistory");
klass->color_selected = NULL;
}
static void
gimp_color_history_init (GimpColorHistory *history)
{
history->color_areas = NULL;
}
static void
gimp_color_history_constructed (GObject *object)
{
GimpColorHistory *history = GIMP_COLOR_HISTORY (object);
GimpPalette *palette;
G_OBJECT_CLASS (parent_class)->constructed (object);
palette = gimp_palettes_get_color_history (history->context->gimp);
g_signal_connect_object (palette, "dirty",
G_CALLBACK (gimp_color_history_palette_dirty),
G_OBJECT (history), 0);
gimp_color_history_palette_dirty (palette, history);
}
static void
gimp_color_history_finalize (GObject *object)
{
GimpColorHistory *history = GIMP_COLOR_HISTORY (object);
g_free (history->color_areas);
history->color_areas = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_color_history_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpColorHistory *history = GIMP_COLOR_HISTORY (object);
switch (property_id)
{
case PROP_CONTEXT:
history->context = g_value_get_object (value);
break;
case PROP_HISTORY_SIZE:
{
GtkWidget *button;
gint i;
/* Destroy previous color buttons. */
gtk_container_foreach (GTK_CONTAINER (history),
(GtkCallback) gtk_widget_destroy, NULL);
history->history_size = g_value_get_int (value);
gtk_grid_set_row_spacing (GTK_GRID (history), 2);
gtk_grid_set_column_spacing (GTK_GRID (history), 2);
history->color_areas = g_realloc_n (history->color_areas,
history->history_size,
sizeof (GtkWidget*));
for (i = 0; i < history->history_size; i++)
{
GimpRGB black = { 0.0, 0.0, 0.0, 1.0 };
gint row, column;
column = i % (history->history_size / 2);
row = i / (history->history_size / 2);
button = gtk_button_new ();
gtk_widget_set_size_request (button,
COLOR_AREA_SIZE, COLOR_AREA_SIZE);
gtk_grid_attach (GTK_GRID (history), button,
column, row, 1, 1);
gtk_widget_show (button);
history->color_areas[i] = gimp_color_area_new (&black,
GIMP_COLOR_AREA_SMALL_CHECKS,
GDK_BUTTON2_MASK);
gimp_color_area_set_color_config (GIMP_COLOR_AREA (history->color_areas[i]),
history->context->gimp->config->color_management);
gtk_container_add (GTK_CONTAINER (button), history->color_areas[i]);
gtk_widget_show (history->color_areas[i]);
g_signal_connect (button, "clicked",
G_CALLBACK (gimp_color_history_color_clicked),
history);
g_signal_connect (history->color_areas[i], "color-changed",
G_CALLBACK (gimp_color_history_color_changed),
GINT_TO_POINTER (i));
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_color_history_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpColorHistory *history = GIMP_COLOR_HISTORY (object);
switch (property_id)
{
case PROP_CONTEXT:
g_value_set_object (value, history->context);
break;
case PROP_HISTORY_SIZE:
g_value_set_int (value, history->history_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/* Public Functions */
GtkWidget *
gimp_color_history_new (GimpContext *context,
gint history_size)
{
GimpColorHistory *history;
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
history = g_object_new (GIMP_TYPE_COLOR_HISTORY,
"context", context,
"history-size", history_size,
NULL);
return GTK_WIDGET (history);
}
/* Color history callback. */
static void
gimp_color_history_color_clicked (GtkWidget *widget,
GimpColorHistory *history)
{
GimpColorArea *color_area;
GimpRGB color;
color_area = GIMP_COLOR_AREA (gtk_bin_get_child (GTK_BIN (widget)));
gimp_color_area_get_color (color_area, &color);
g_signal_emit (history, history_signals[COLOR_SELECTED], 0,
&color);
}
/* Color history palette callback. */
static void
gimp_color_history_palette_dirty (GimpPalette *palette,
GimpColorHistory *history)
{
gint i;
for (i = 0; i < history->history_size; i++)
{
GimpPaletteEntry *entry = gimp_palette_get_entry (palette, i);
GimpRGB black = { 0.0, 0.0, 0.0, 1.0 };
g_signal_handlers_block_by_func (history->color_areas[i],
gimp_color_history_color_changed,
GINT_TO_POINTER (i));
gimp_color_area_set_color (GIMP_COLOR_AREA (history->color_areas[i]),
entry ? &entry->color : &black);
g_signal_handlers_unblock_by_func (history->color_areas[i],
gimp_color_history_color_changed,
GINT_TO_POINTER (i));
}
}
/* Color area callbacks. */
static void
gimp_color_history_color_changed (GtkWidget *widget,
gpointer data)
{
GimpColorHistory *history;
GimpPalette *palette;
GimpRGB color;
history = GIMP_COLOR_HISTORY (gtk_widget_get_ancestor (widget,
GIMP_TYPE_COLOR_HISTORY));
palette = gimp_palettes_get_color_history (history->context->gimp);
gimp_color_area_get_color (GIMP_COLOR_AREA (widget), &color);
gimp_palette_set_entry_color (palette, GPOINTER_TO_INT (data), &color);
}
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