999 lines
31 KiB
C
999 lines
31 KiB
C
/*
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* GTK - The GIMP Toolkit
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* Copyright (C) 1998, 1999 Red Hat, Inc.
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* All rights reserved.
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*
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* This Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This Library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with the Gnome Library; see the file COPYING.LIB. If not,
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* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Color picker button for GNOME
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*
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* Author: Federico Mena <federico@nuclecu.unam.mx>
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*
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* Modified by the GTK+ Team and others 2003. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <config.h>
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#include "gtkcolorbutton.h"
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#include "gdk/gdkkeysyms.h"
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#include "gdk-pixbuf/gdk-pixbuf.h"
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#include "gtkbutton.h"
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#include "gtkmain.h"
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#include "gtkalignment.h"
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#include "gtkcolorsel.h"
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#include "gtkcolorseldialog.h"
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#include "gtkdnd.h"
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#include "gtkdrawingarea.h"
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#include "gtkframe.h"
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#include "gtksignal.h"
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#include "gtkmarshalers.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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/* Size of checks and gray levels for alpha compositing checkerboard */
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#define CHECK_SIZE 4
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#define CHECK_DARK 21845 /* 65535 / 3 */
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#define CHECK_LIGHT 43690
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#define GTK_COLOR_BUTTON_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_COLOR_BUTTON, GtkColorButtonPrivate))
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struct _GtkColorButtonPrivate
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{
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GdkPixbuf *pixbuf; /* Pixbuf for rendering sample */
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GdkGC *gc; /* GC for drawing */
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GtkWidget *draw_area; /* Widget where we draw the color sample */
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GtkWidget *cs_dialog; /* Color selection dialog */
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gchar *title; /* Title for the color selection window */
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GdkColor color;
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guint16 alpha;
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guint use_alpha : 1; /* Use alpha or not */
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};
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/* Properties */
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enum
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{
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PROP_0,
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PROP_USE_ALPHA,
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PROP_TITLE,
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PROP_COLOR,
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PROP_ALPHA
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};
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/* Signals */
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enum
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{
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COLOR_SET,
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LAST_SIGNAL
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};
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/* gobject signals */
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static void gtk_color_button_finalize (GObject *object);
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static void gtk_color_button_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_color_button_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec);
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/* gtkwidget signals */
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static void gtk_color_button_realize (GtkWidget *widget);
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static void gtk_color_button_unrealize (GtkWidget *widget);
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static void gtk_color_button_state_changed (GtkWidget *widget,
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GtkStateType previous_state);
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static void gtk_color_button_style_set (GtkWidget *widget,
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GtkStyle *previous_style);
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/* gtkbutton signals */
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static void gtk_color_button_clicked (GtkButton *button);
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/* source side drag signals */
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static void gtk_color_button_drag_begin (GtkWidget *widget,
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GdkDragContext *context,
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gpointer data);
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static void gtk_color_button_drag_data_get (GtkWidget *widget,
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GdkDragContext *context,
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GtkSelectionData *selection_data,
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guint info,
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guint time,
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GtkColorButton *color_button);
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/* target side drag signals */
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static void gtk_color_button_drag_data_received (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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GtkSelectionData *selection_data,
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guint info,
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guint32 time,
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GtkColorButton *color_button);
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static guint color_button_signals[LAST_SIGNAL] = { 0 };
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static const GtkTargetEntry drop_types[] = { { "application/x-color", 0, 0 } };
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G_DEFINE_TYPE (GtkColorButton, gtk_color_button, GTK_TYPE_BUTTON)
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static void
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gtk_color_button_class_init (GtkColorButtonClass *klass)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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GtkButtonClass *button_class;
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gobject_class = G_OBJECT_CLASS (klass);
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widget_class = GTK_WIDGET_CLASS (klass);
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button_class = GTK_BUTTON_CLASS (klass);
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gobject_class->get_property = gtk_color_button_get_property;
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gobject_class->set_property = gtk_color_button_set_property;
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gobject_class->finalize = gtk_color_button_finalize;
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widget_class->state_changed = gtk_color_button_state_changed;
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widget_class->realize = gtk_color_button_realize;
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widget_class->unrealize = gtk_color_button_unrealize;
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widget_class->style_set = gtk_color_button_style_set;
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button_class->clicked = gtk_color_button_clicked;
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klass->color_set = NULL;
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/**
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* GtkColorButton:use-alpha:
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*
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* If this property is set to %TRUE, the color swatch on the button is rendered against a
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* checkerboard background to show its opacity and the opacity slider is displayed in the
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* color selection dialog.
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*
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* Since: 2.4
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*/
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g_object_class_install_property (gobject_class,
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PROP_USE_ALPHA,
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g_param_spec_boolean ("use-alpha", P_("Use alpha"),
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P_("Whether or not to give the color an alpha value"),
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FALSE,
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GTK_PARAM_READWRITE));
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/**
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* GtkColorButton:title:
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*
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* The title of the color selection dialog
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*
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* Since: 2.4
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*/
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g_object_class_install_property (gobject_class,
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PROP_TITLE,
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g_param_spec_string ("title",
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P_("Title"),
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P_("The title of the color selection dialog"),
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_("Pick a Color"),
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GTK_PARAM_READWRITE));
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/**
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* GtkColorButton:color:
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*
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* The selected color.
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*
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* Since: 2.4
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*/
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g_object_class_install_property (gobject_class,
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PROP_COLOR,
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g_param_spec_boxed ("color",
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P_("Current Color"),
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P_("The selected color"),
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GDK_TYPE_COLOR,
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GTK_PARAM_READWRITE));
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/**
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* GtkColorButton:alpha:
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*
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* The selected opacity value (0 fully transparent, 65535 fully opaque).
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*
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* Since: 2.4
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*/
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g_object_class_install_property (gobject_class,
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PROP_ALPHA,
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g_param_spec_uint ("alpha",
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P_("Current Alpha"),
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P_("The selected opacity value (0 fully transparent, 65535 fully opaque)"),
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0, 65535, 65535,
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GTK_PARAM_READWRITE));
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/**
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* GtkColorButton::color-set:
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* @widget: the object which received the signal.
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*
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* The ::color-set signal is emitted when the user selects a color.
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* When handling this signal, use gtk_color_button_get_color() and
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* gtk_color_button_get_alpha() to find out which color was just selected.
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*
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* Note that this signal is only emitted when the <emphasis>user</emphasis>
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* changes the color. If you need to react to programmatic color changes
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* as well, use the notify::color signal.
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*
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* Since: 2.4
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*/
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color_button_signals[COLOR_SET] = g_signal_new (I_("color_set"),
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G_TYPE_FROM_CLASS (gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkColorButtonClass, color_set),
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NULL, NULL,
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_gtk_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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g_type_class_add_private (gobject_class, sizeof (GtkColorButtonPrivate));
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}
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static void
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render (GtkColorButton *color_button)
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{
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gint dark_r, dark_g, dark_b;
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gint light_r, light_g, light_b;
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gint i, j, rowstride;
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gint width, height;
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gint c1[3], c2[3];
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guchar *pixels;
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guint8 insensitive_r = 0;
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guint8 insensitive_g = 0;
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guint8 insensitive_b = 0;
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width = color_button->priv->draw_area->allocation.width;
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height = color_button->priv->draw_area->allocation.height;
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if (color_button->priv->pixbuf == NULL ||
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gdk_pixbuf_get_width (color_button->priv->pixbuf) != width ||
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gdk_pixbuf_get_height (color_button->priv->pixbuf) != height)
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{
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if (color_button->priv->pixbuf != NULL)
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g_object_unref (color_button->priv->pixbuf);
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color_button->priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
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}
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/* Compute dark and light check colors */
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insensitive_r = GTK_WIDGET(color_button)->style->bg[GTK_STATE_INSENSITIVE].red >> 8;
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insensitive_g = GTK_WIDGET(color_button)->style->bg[GTK_STATE_INSENSITIVE].green >> 8;
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insensitive_b = GTK_WIDGET(color_button)->style->bg[GTK_STATE_INSENSITIVE].blue >> 8;
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if (color_button->priv->use_alpha)
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{
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dark_r = ((CHECK_DARK << 16) + (color_button->priv->color.red - CHECK_DARK) * color_button->priv->alpha) >> 24;
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dark_g = ((CHECK_DARK << 16) + (color_button->priv->color.green - CHECK_DARK) * color_button->priv->alpha) >> 24;
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dark_b = ((CHECK_DARK << 16) + (color_button->priv->color.blue - CHECK_DARK) * color_button->priv->alpha) >> 24;
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light_r = ((CHECK_LIGHT << 16) + (color_button->priv->color.red - CHECK_LIGHT) * color_button->priv->alpha) >> 24;
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light_g = ((CHECK_LIGHT << 16) + (color_button->priv->color.green - CHECK_LIGHT) * color_button->priv->alpha) >> 24;
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light_b = ((CHECK_LIGHT << 16) + (color_button->priv->color.blue - CHECK_LIGHT) * color_button->priv->alpha) >> 24;
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}
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else
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{
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dark_r = light_r = color_button->priv->color.red >> 8;
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dark_g = light_g = color_button->priv->color.green >> 8;
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dark_b = light_b = color_button->priv->color.blue >> 8;
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}
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/* Fill image buffer */
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pixels = gdk_pixbuf_get_pixels (color_button->priv->pixbuf);
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rowstride = gdk_pixbuf_get_rowstride (color_button->priv->pixbuf);
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for (j = 0; j < height; j++)
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{
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if ((j / CHECK_SIZE) & 1)
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{
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c1[0] = dark_r;
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c1[1] = dark_g;
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c1[2] = dark_b;
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c2[0] = light_r;
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c2[1] = light_g;
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c2[2] = light_b;
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}
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else
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{
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c1[0] = light_r;
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c1[1] = light_g;
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c1[2] = light_b;
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c2[0] = dark_r;
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c2[1] = dark_g;
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c2[2] = dark_b;
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}
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for (i = 0; i < width; i++)
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{
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if (!GTK_WIDGET_IS_SENSITIVE (GTK_WIDGET (color_button)) && (i+j)%2)
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{
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*(pixels + j * rowstride + i * 3) = insensitive_r;
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*(pixels + j * rowstride + i * 3 + 1) = insensitive_g;
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*(pixels + j * rowstride + i * 3 + 2) = insensitive_b;
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}
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else if ((i / CHECK_SIZE) & 1)
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{
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*(pixels + j * rowstride + i * 3) = c1[0];
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*(pixels + j * rowstride + i * 3 + 1) = c1[1];
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*(pixels + j * rowstride + i * 3 + 2) = c1[2];
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}
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else
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{
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*(pixels + j * rowstride + i * 3) = c2[0];
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*(pixels + j * rowstride + i * 3 + 1) = c2[1];
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*(pixels + j * rowstride + i * 3 + 2) = c2[2];
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}
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}
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}
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}
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/* Handle exposure events for the color picker's drawing area */
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static gint
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expose_event (GtkWidget *widget,
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GdkEventExpose *event,
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gpointer data)
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{
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GtkColorButton *color_button = GTK_COLOR_BUTTON (data);
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gint width = color_button->priv->draw_area->allocation.width;
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gint height = color_button->priv->draw_area->allocation.height;
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if (color_button->priv->pixbuf == NULL ||
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width != gdk_pixbuf_get_width (color_button->priv->pixbuf) ||
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height != gdk_pixbuf_get_height (color_button->priv->pixbuf))
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render (color_button);
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gdk_draw_pixbuf (widget->window,
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color_button->priv->gc,
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color_button->priv->pixbuf,
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event->area.x - widget->allocation.x,
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event->area.y - widget->allocation.y,
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event->area.x,
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event->area.y,
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event->area.width,
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event->area.height,
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GDK_RGB_DITHER_MAX,
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event->area.x - widget->allocation.x,
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event->area.y - widget->allocation.y);
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return FALSE;
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}
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static void
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gtk_color_button_realize (GtkWidget *widget)
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{
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GtkColorButton *color_button = GTK_COLOR_BUTTON (widget);
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GTK_WIDGET_CLASS (gtk_color_button_parent_class)->realize (widget);
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color_button->priv->gc = gdk_gc_new (widget->window);
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render (color_button);
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}
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static void
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gtk_color_button_unrealize (GtkWidget *widget)
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{
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GtkColorButton *color_button = GTK_COLOR_BUTTON (widget);
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g_object_unref (color_button->priv->gc);
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color_button->priv->gc = NULL;
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GTK_WIDGET_CLASS (gtk_color_button_parent_class)->unrealize (widget);
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}
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static void
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gtk_color_button_style_set (GtkWidget *widget,
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GtkStyle *previous_style)
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{
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GtkColorButton *color_button = GTK_COLOR_BUTTON (widget);
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GTK_WIDGET_CLASS (gtk_color_button_parent_class)->style_set (widget, previous_style);
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if (GTK_WIDGET_REALIZED (widget))
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{
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if (color_button->priv->pixbuf != NULL)
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g_object_unref (color_button->priv->pixbuf);
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color_button->priv->pixbuf = NULL;
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}
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}
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static void
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gtk_color_button_state_changed (GtkWidget *widget,
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GtkStateType previous_state)
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{
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GtkColorButton *color_button = GTK_COLOR_BUTTON (widget);
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if (widget->state == GTK_STATE_INSENSITIVE || previous_state == GTK_STATE_INSENSITIVE)
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{
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if (color_button->priv->pixbuf != NULL)
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g_object_unref (color_button->priv->pixbuf);
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color_button->priv->pixbuf = NULL;
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}
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}
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static void
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gtk_color_button_drag_data_received (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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GtkSelectionData *selection_data,
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guint info,
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guint32 time,
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GtkColorButton *color_button)
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{
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guint16 *dropped;
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if (selection_data->length < 0)
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return;
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/* We accept drops with the wrong format, since the KDE color
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* chooser incorrectly drops application/x-color with format 8.
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*/
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if (selection_data->length != 8)
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{
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g_warning (_("Received invalid color data\n"));
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return;
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}
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dropped = (guint16 *)selection_data->data;
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color_button->priv->color.red = dropped[0];
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color_button->priv->color.green = dropped[1];
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color_button->priv->color.blue = dropped[2];
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color_button->priv->alpha = dropped[3];
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if (color_button->priv->pixbuf != NULL)
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g_object_unref (color_button->priv->pixbuf);
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color_button->priv->pixbuf = NULL;
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gtk_widget_queue_draw (color_button->priv->draw_area);
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g_signal_emit (color_button, color_button_signals[COLOR_SET], 0);
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g_object_freeze_notify (G_OBJECT (color_button));
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g_object_notify (G_OBJECT (color_button), "color");
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g_object_notify (G_OBJECT (color_button), "alpha");
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g_object_thaw_notify (G_OBJECT (color_button));
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}
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static void
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set_color_icon (GdkDragContext *context,
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GdkColor *color)
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{
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GdkPixbuf *pixbuf;
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guint32 pixel;
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pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE,
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8, 48, 32);
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pixel = ((color->red & 0xff00) << 16) |
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((color->green & 0xff00) << 8) |
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(color->blue & 0xff00);
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gdk_pixbuf_fill (pixbuf, pixel);
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gtk_drag_set_icon_pixbuf (context, pixbuf, -2, -2);
|
|
g_object_unref (pixbuf);
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_drag_begin (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gpointer data)
|
|
{
|
|
GtkColorButton *color_button = data;
|
|
|
|
set_color_icon (context, &color_button->priv->color);
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_drag_data_get (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
GtkSelectionData *selection_data,
|
|
guint info,
|
|
guint time,
|
|
GtkColorButton *color_button)
|
|
{
|
|
guint16 dropped[4];
|
|
|
|
dropped[0] = color_button->priv->color.red;
|
|
dropped[1] = color_button->priv->color.green;
|
|
dropped[2] = color_button->priv->color.blue;
|
|
dropped[3] = color_button->priv->alpha;
|
|
|
|
gtk_selection_data_set (selection_data, selection_data->target,
|
|
16, (guchar *)dropped, 8);
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_init (GtkColorButton *color_button)
|
|
{
|
|
GtkWidget *alignment;
|
|
GtkWidget *frame;
|
|
PangoLayout *layout;
|
|
PangoRectangle rect;
|
|
|
|
/* Create the widgets */
|
|
color_button->priv = GTK_COLOR_BUTTON_GET_PRIVATE (color_button);
|
|
|
|
gtk_widget_push_composite_child ();
|
|
|
|
alignment = gtk_alignment_new (0.5, 0.5, 0.5, 1.0);
|
|
gtk_container_set_border_width (GTK_CONTAINER (alignment), 1);
|
|
gtk_container_add (GTK_CONTAINER (color_button), alignment);
|
|
gtk_widget_show (alignment);
|
|
|
|
frame = gtk_frame_new (NULL);
|
|
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_OUT);
|
|
gtk_container_add (GTK_CONTAINER (alignment), frame);
|
|
gtk_widget_show (frame);
|
|
|
|
/* Just some widget we can hook to expose-event on */
|
|
color_button->priv->draw_area = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
|
|
|
|
layout = gtk_widget_create_pango_layout (GTK_WIDGET (color_button), "Black");
|
|
pango_layout_get_pixel_extents (layout, NULL, &rect);
|
|
g_object_unref (layout);
|
|
|
|
gtk_widget_set_size_request (color_button->priv->draw_area, rect.width - 2, rect.height - 2);
|
|
g_signal_connect (color_button->priv->draw_area, "expose-event",
|
|
G_CALLBACK (expose_event), color_button);
|
|
gtk_container_add (GTK_CONTAINER (frame), color_button->priv->draw_area);
|
|
gtk_widget_show (color_button->priv->draw_area);
|
|
|
|
color_button->priv->title = g_strdup (_("Pick a Color")); /* default title */
|
|
|
|
/* Create the buffer for the image so that we can create an image.
|
|
* Also create the picker's pixmap.
|
|
*/
|
|
color_button->priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, rect.width, rect.height);
|
|
|
|
color_button->priv->gc = NULL;
|
|
|
|
/* Start with opaque black, alpha disabled */
|
|
|
|
color_button->priv->color.red = 0;
|
|
color_button->priv->color.green = 0;
|
|
color_button->priv->color.blue = 0;
|
|
color_button->priv->alpha = 65535;
|
|
color_button->priv->use_alpha = FALSE;
|
|
|
|
gtk_drag_dest_set (GTK_WIDGET (color_button),
|
|
GTK_DEST_DEFAULT_MOTION |
|
|
GTK_DEST_DEFAULT_HIGHLIGHT |
|
|
GTK_DEST_DEFAULT_DROP,
|
|
drop_types, 1, GDK_ACTION_COPY);
|
|
gtk_drag_source_set (GTK_WIDGET(color_button),
|
|
GDK_BUTTON1_MASK|GDK_BUTTON3_MASK,
|
|
drop_types, 1,
|
|
GDK_ACTION_COPY);
|
|
g_signal_connect (color_button, "drag_begin",
|
|
G_CALLBACK (gtk_color_button_drag_begin), color_button);
|
|
g_signal_connect (color_button, "drag_data_received",
|
|
G_CALLBACK (gtk_color_button_drag_data_received), color_button);
|
|
g_signal_connect (color_button, "drag_data_get",
|
|
G_CALLBACK (gtk_color_button_drag_data_get), color_button);
|
|
|
|
gtk_widget_pop_composite_child ();
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_finalize (GObject *object)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (object);
|
|
|
|
if (color_button->priv->cs_dialog != NULL)
|
|
gtk_widget_destroy (color_button->priv->cs_dialog);
|
|
color_button->priv->cs_dialog = NULL;
|
|
|
|
if (color_button->priv->pixbuf != NULL)
|
|
g_object_unref (color_button->priv->pixbuf);
|
|
color_button->priv->pixbuf = NULL;
|
|
|
|
g_free (color_button->priv->title);
|
|
color_button->priv->title = NULL;
|
|
|
|
G_OBJECT_CLASS (gtk_color_button_parent_class)->finalize (object);
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_color_button_new:
|
|
*
|
|
* Creates a new color button. This returns a widget in the form of
|
|
* a small button containing a swatch representing the current selected
|
|
* color. When the button is clicked, a color-selection dialog will open,
|
|
* allowing the user to select a color. The swatch will be updated to reflect
|
|
* the new color when the user finishes.
|
|
*
|
|
* Returns: a new color button.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
GtkWidget *
|
|
gtk_color_button_new (void)
|
|
{
|
|
return g_object_new (GTK_TYPE_COLOR_BUTTON, NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_new_with_color:
|
|
* @color: A #GdkColor to set the current color with.
|
|
*
|
|
* Creates a new color button.
|
|
*
|
|
* Returns: a new color button.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
GtkWidget *
|
|
gtk_color_button_new_with_color (const GdkColor *color)
|
|
{
|
|
return g_object_new (GTK_TYPE_COLOR_BUTTON, "color", color, NULL);
|
|
}
|
|
|
|
static void
|
|
dialog_ok_clicked (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (data);
|
|
GtkColorSelection *color_selection;
|
|
|
|
color_selection = GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (color_button->priv->cs_dialog)->colorsel);
|
|
|
|
gtk_color_selection_get_current_color (color_selection, &color_button->priv->color);
|
|
color_button->priv->alpha = gtk_color_selection_get_current_alpha (color_selection);
|
|
|
|
if (color_button->priv->pixbuf != NULL)
|
|
g_object_unref (color_button->priv->pixbuf);
|
|
color_button->priv->pixbuf = NULL;
|
|
|
|
gtk_widget_hide (color_button->priv->cs_dialog);
|
|
|
|
gtk_widget_queue_draw (color_button->priv->draw_area);
|
|
|
|
g_signal_emit (color_button, color_button_signals[COLOR_SET], 0);
|
|
|
|
g_object_freeze_notify (G_OBJECT (color_button));
|
|
g_object_notify (G_OBJECT (color_button), "color");
|
|
g_object_notify (G_OBJECT (color_button), "alpha");
|
|
g_object_thaw_notify (G_OBJECT (color_button));
|
|
}
|
|
|
|
static gboolean
|
|
dialog_destroy (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (data);
|
|
|
|
color_button->priv->cs_dialog = NULL;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
dialog_cancel_clicked (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (data);
|
|
|
|
gtk_widget_hide (color_button->priv->cs_dialog);
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_clicked (GtkButton *button)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (button);
|
|
GtkColorSelectionDialog *color_dialog;
|
|
|
|
/* if dialog already exists, make sure it's shown and raised */
|
|
if (!color_button->priv->cs_dialog)
|
|
{
|
|
/* Create the dialog and connects its buttons */
|
|
GtkWidget *parent;
|
|
|
|
parent = gtk_widget_get_toplevel (GTK_WIDGET (color_button));
|
|
|
|
color_button->priv->cs_dialog = gtk_color_selection_dialog_new (color_button->priv->title);
|
|
|
|
color_dialog = GTK_COLOR_SELECTION_DIALOG (color_button->priv->cs_dialog);
|
|
|
|
if (GTK_WIDGET_TOPLEVEL (parent) && GTK_IS_WINDOW (parent))
|
|
{
|
|
if (GTK_WINDOW (parent) != gtk_window_get_transient_for (GTK_WINDOW (color_dialog)))
|
|
gtk_window_set_transient_for (GTK_WINDOW (color_dialog), GTK_WINDOW (parent));
|
|
|
|
gtk_window_set_modal (GTK_WINDOW (color_dialog),
|
|
gtk_window_get_modal (GTK_WINDOW (parent)));
|
|
}
|
|
|
|
g_signal_connect (color_dialog->ok_button, "clicked",
|
|
G_CALLBACK (dialog_ok_clicked), color_button);
|
|
g_signal_connect (color_dialog->cancel_button, "clicked",
|
|
G_CALLBACK (dialog_cancel_clicked), color_button);
|
|
g_signal_connect (color_dialog, "destroy",
|
|
G_CALLBACK (dialog_destroy), color_button);
|
|
}
|
|
|
|
color_dialog = GTK_COLOR_SELECTION_DIALOG (color_button->priv->cs_dialog);
|
|
|
|
gtk_color_selection_set_has_opacity_control (GTK_COLOR_SELECTION (color_dialog->colorsel),
|
|
color_button->priv->use_alpha);
|
|
|
|
gtk_color_selection_set_previous_color (GTK_COLOR_SELECTION (color_dialog->colorsel),
|
|
&color_button->priv->color);
|
|
gtk_color_selection_set_previous_alpha (GTK_COLOR_SELECTION (color_dialog->colorsel),
|
|
color_button->priv->alpha);
|
|
|
|
gtk_color_selection_set_current_color (GTK_COLOR_SELECTION (color_dialog->colorsel),
|
|
&color_button->priv->color);
|
|
gtk_color_selection_set_current_alpha (GTK_COLOR_SELECTION (color_dialog->colorsel),
|
|
color_button->priv->alpha);
|
|
|
|
gtk_window_present (GTK_WINDOW (color_button->priv->cs_dialog));
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_set_color:
|
|
* @color_button: a #GtkColorButton.
|
|
* @color: A #GdkColor to set the current color with.
|
|
*
|
|
* Sets the current color to be @color.
|
|
*
|
|
* Since: 2.4
|
|
**/
|
|
void
|
|
gtk_color_button_set_color (GtkColorButton *color_button,
|
|
const GdkColor *color)
|
|
{
|
|
g_return_if_fail (GTK_IS_COLOR_BUTTON (color_button));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
color_button->priv->color.red = color->red;
|
|
color_button->priv->color.green = color->green;
|
|
color_button->priv->color.blue = color->blue;
|
|
|
|
if (color_button->priv->pixbuf != NULL)
|
|
g_object_unref (color_button->priv->pixbuf);
|
|
color_button->priv->pixbuf = NULL;
|
|
|
|
gtk_widget_queue_draw (color_button->priv->draw_area);
|
|
|
|
g_object_notify (G_OBJECT (color_button), "color");
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_color_button_set_alpha:
|
|
* @color_button: a #GtkColorButton.
|
|
* @alpha: an integer between 0 and 65535.
|
|
*
|
|
* Sets the current opacity to be @alpha.
|
|
*
|
|
* Since: 2.4
|
|
**/
|
|
void
|
|
gtk_color_button_set_alpha (GtkColorButton *color_button,
|
|
guint16 alpha)
|
|
{
|
|
g_return_if_fail (GTK_IS_COLOR_BUTTON (color_button));
|
|
|
|
color_button->priv->alpha = alpha;
|
|
|
|
if (color_button->priv->pixbuf != NULL)
|
|
g_object_unref (color_button->priv->pixbuf);
|
|
color_button->priv->pixbuf = NULL;
|
|
|
|
gtk_widget_queue_draw (color_button->priv->draw_area);
|
|
|
|
g_object_notify (G_OBJECT (color_button), "alpha");
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_get_color:
|
|
* @color_button: a #GtkColorButton.
|
|
* @color: a #GdkColor to fill in with the current color.
|
|
*
|
|
* Sets @color to be the current color in the #GtkColorButton widget.
|
|
*
|
|
* Since: 2.4
|
|
**/
|
|
void
|
|
gtk_color_button_get_color (GtkColorButton *color_button,
|
|
GdkColor *color)
|
|
{
|
|
g_return_if_fail (GTK_IS_COLOR_BUTTON (color_button));
|
|
|
|
color->red = color_button->priv->color.red;
|
|
color->green = color_button->priv->color.green;
|
|
color->blue = color_button->priv->color.blue;
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_get_alpha:
|
|
* @color_button: a #GtkColorButton.
|
|
*
|
|
* Returns the current alpha value.
|
|
*
|
|
* Return value: an integer between 0 and 65535.
|
|
*
|
|
* Since: 2.4
|
|
**/
|
|
guint16
|
|
gtk_color_button_get_alpha (GtkColorButton *color_button)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_COLOR_BUTTON (color_button), 0);
|
|
|
|
return color_button->priv->alpha;
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_set_use_alpha:
|
|
* @color_button: a #GtkColorButton.
|
|
* @use_alpha: %TRUE if color button should use alpha channel, %FALSE if not.
|
|
*
|
|
* Sets whether or not the color button should use the alpha channel.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
void
|
|
gtk_color_button_set_use_alpha (GtkColorButton *color_button,
|
|
gboolean use_alpha)
|
|
{
|
|
g_return_if_fail (GTK_IS_COLOR_BUTTON (color_button));
|
|
|
|
use_alpha = (use_alpha != FALSE);
|
|
|
|
if (color_button->priv->use_alpha != use_alpha)
|
|
{
|
|
color_button->priv->use_alpha = use_alpha;
|
|
|
|
render (color_button);
|
|
gtk_widget_queue_draw (color_button->priv->draw_area);
|
|
|
|
g_object_notify (G_OBJECT (color_button), "use-alpha");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_get_use_alpha:
|
|
* @color_button: a #GtkColorButton.
|
|
*
|
|
* Does the color selection dialog use the alpha channel?
|
|
*
|
|
* Returns: %TRUE if the color sample uses alpha channel, %FALSE if not.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
gboolean
|
|
gtk_color_button_get_use_alpha (GtkColorButton *color_button)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_COLOR_BUTTON (color_button), FALSE);
|
|
|
|
return color_button->priv->use_alpha;
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_color_button_set_title:
|
|
* @color_button: a #GtkColorButton
|
|
* @title: String containing new window title.
|
|
*
|
|
* Sets the title for the color selection dialog.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
void
|
|
gtk_color_button_set_title (GtkColorButton *color_button,
|
|
const gchar *title)
|
|
{
|
|
gchar *old_title;
|
|
|
|
g_return_if_fail (GTK_IS_COLOR_BUTTON (color_button));
|
|
|
|
old_title = color_button->priv->title;
|
|
color_button->priv->title = g_strdup (title);
|
|
g_free (old_title);
|
|
|
|
if (color_button->priv->cs_dialog)
|
|
gtk_window_set_title (GTK_WINDOW (color_button->priv->cs_dialog),
|
|
color_button->priv->title);
|
|
|
|
g_object_notify (G_OBJECT (color_button), "title");
|
|
}
|
|
|
|
/**
|
|
* gtk_color_button_get_title:
|
|
* @color_button: a #GtkColorButton
|
|
*
|
|
* Gets the title of the color selection dialog.
|
|
*
|
|
* Returns: An internal string, do not free the return value
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
G_CONST_RETURN gchar *
|
|
gtk_color_button_get_title (GtkColorButton *color_button)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_COLOR_BUTTON (color_button), NULL);
|
|
|
|
return color_button->priv->title;
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_set_property (GObject *object,
|
|
guint param_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (object);
|
|
|
|
switch (param_id)
|
|
{
|
|
case PROP_USE_ALPHA:
|
|
gtk_color_button_set_use_alpha (color_button, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_TITLE:
|
|
gtk_color_button_set_title (color_button, g_value_get_string (value));
|
|
break;
|
|
case PROP_COLOR:
|
|
gtk_color_button_set_color (color_button, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_ALPHA:
|
|
gtk_color_button_set_alpha (color_button, g_value_get_uint (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_color_button_get_property (GObject *object,
|
|
guint param_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkColorButton *color_button = GTK_COLOR_BUTTON (object);
|
|
GdkColor color;
|
|
|
|
switch (param_id)
|
|
{
|
|
case PROP_USE_ALPHA:
|
|
g_value_set_boolean (value, gtk_color_button_get_use_alpha (color_button));
|
|
break;
|
|
case PROP_TITLE:
|
|
g_value_set_string (value, gtk_color_button_get_title (color_button));
|
|
break;
|
|
case PROP_COLOR:
|
|
gtk_color_button_get_color (color_button, &color);
|
|
g_value_set_boxed (value, &color);
|
|
break;
|
|
case PROP_ALPHA:
|
|
g_value_set_uint (value, gtk_color_button_get_alpha (color_button));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
|
|
break;
|
|
}
|
|
}
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#define __GTK_COLOR_BUTTON_C__
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#include "gtkaliasdef.c"
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