This is intended mainly for GNU/Linux distros who will remove GTK2 support in the near future.
874 lines
26 KiB
C
874 lines
26 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 "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 (1.0 / 3.0)
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#define CHECK_LIGHT (2.0 / 3.0)
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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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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_state_changed (GtkWidget *widget,
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GtkStateType previous_state);
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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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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 gboolean
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gtk_color_button_has_alpha (GtkColorButton *color_button)
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{
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return color_button->priv->use_alpha &&
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color_button->priv->alpha < 65535;
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}
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static cairo_pattern_t *
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gtk_color_button_get_checkered (void)
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{
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/* need to respect pixman's stride being a multiple of 4 */
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static unsigned char data[8] = { 0xFF, 0x00, 0x00, 0x00,
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0x00, 0xFF, 0x00, 0x00 };
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static cairo_surface_t *checkered = NULL;
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cairo_pattern_t *pattern;
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if (checkered == NULL)
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{
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checkered = cairo_image_surface_create_for_data (data,
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CAIRO_FORMAT_A8,
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2, 2, 4);
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}
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pattern = cairo_pattern_create_for_surface (checkered);
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cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
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cairo_pattern_set_filter (pattern, CAIRO_FILTER_NEAREST);
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return pattern;
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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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GtkAllocation allocation;
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cairo_pattern_t *checkered;
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cairo_t *cr;
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cr = gdk_cairo_create (event->window);
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gtk_widget_get_allocation (widget, &allocation);
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gdk_cairo_rectangle (cr, &allocation);
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cairo_clip (cr);
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if (gtk_color_button_has_alpha (color_button))
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{
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cairo_save (cr);
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cairo_set_source_rgb (cr, CHECK_DARK, CHECK_DARK, CHECK_DARK);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, CHECK_LIGHT, CHECK_LIGHT, CHECK_LIGHT);
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cairo_scale (cr, CHECK_SIZE, CHECK_SIZE);
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checkered = gtk_color_button_get_checkered ();
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cairo_mask (cr, checkered);
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cairo_pattern_destroy (checkered);
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cairo_restore (cr);
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cairo_set_source_rgba (cr,
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color_button->priv->color.red / 65535.,
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color_button->priv->color.green / 65535.,
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color_button->priv->color.blue / 65535.,
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color_button->priv->alpha / 65535.);
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}
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else
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{
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gdk_cairo_set_source_color (cr, &color_button->priv->color);
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}
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cairo_paint (cr);
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if (!gtk_widget_is_sensitive (GTK_WIDGET (color_button)))
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{
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gdk_cairo_set_source_color (cr, >K_WIDGET(color_button)->style->bg[GTK_STATE_INSENSITIVE]);
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checkered = gtk_color_button_get_checkered ();
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cairo_mask (cr, checkered);
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cairo_pattern_destroy (checkered);
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}
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cairo_destroy (cr);
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return FALSE;
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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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gtk_widget_queue_draw (widget);
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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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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);
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g_object_unref (pixbuf);
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}
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static void
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gtk_color_button_drag_begin (GtkWidget *widget,
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GdkDragContext *context,
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gpointer data)
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{
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GtkColorButton *color_button = data;
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set_color_icon (context, &color_button->priv->color);
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}
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static void
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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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{
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guint16 dropped[4];
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dropped[0] = color_button->priv->color.red;
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dropped[1] = color_button->priv->color.green;
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dropped[2] = color_button->priv->color.blue;
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dropped[3] = color_button->priv->alpha;
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gtk_selection_data_set (selection_data, selection_data->target,
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16, (guchar *)dropped, 8);
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}
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static void
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gtk_color_button_init (GtkColorButton *color_button)
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{
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GtkWidget *alignment;
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GtkWidget *frame;
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PangoLayout *layout;
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PangoRectangle rect;
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/* Create the widgets */
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color_button->priv = GTK_COLOR_BUTTON_GET_PRIVATE (color_button);
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gtk_widget_push_composite_child ();
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alignment = gtk_alignment_new (0.5, 0.5, 0.5, 1.0);
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gtk_container_set_border_width (GTK_CONTAINER (alignment), 1);
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gtk_container_add (GTK_CONTAINER (color_button), alignment);
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gtk_widget_show (alignment);
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frame = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_OUT);
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gtk_container_add (GTK_CONTAINER (alignment), frame);
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gtk_widget_show (frame);
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/* Just some widget we can hook to expose-event on */
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color_button->priv->draw_area = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
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layout = gtk_widget_create_pango_layout (GTK_WIDGET (color_button), "Black");
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pango_layout_get_pixel_extents (layout, NULL, &rect);
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g_object_unref (layout);
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gtk_widget_set_size_request (color_button->priv->draw_area, rect.width - 2, rect.height - 2);
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g_signal_connect (color_button->priv->draw_area, "expose-event",
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G_CALLBACK (expose_event), color_button);
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gtk_container_add (GTK_CONTAINER (frame), color_button->priv->draw_area);
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gtk_widget_show (color_button->priv->draw_area);
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color_button->priv->title = g_strdup (_("Pick a Color")); /* default title */
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/* Start with opaque black, alpha disabled */
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color_button->priv->color.red = 0;
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color_button->priv->color.green = 0;
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color_button->priv->color.blue = 0;
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color_button->priv->alpha = 65535;
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color_button->priv->use_alpha = FALSE;
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gtk_drag_dest_set (GTK_WIDGET (color_button),
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GTK_DEST_DEFAULT_MOTION |
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GTK_DEST_DEFAULT_HIGHLIGHT |
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GTK_DEST_DEFAULT_DROP,
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drop_types, 1, GDK_ACTION_COPY);
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gtk_drag_source_set (GTK_WIDGET(color_button),
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GDK_BUTTON1_MASK|GDK_BUTTON3_MASK,
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drop_types, 1,
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GDK_ACTION_COPY);
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g_signal_connect (color_button, "drag-begin",
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G_CALLBACK (gtk_color_button_drag_begin), color_button);
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g_signal_connect (color_button, "drag-data-received",
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G_CALLBACK (gtk_color_button_drag_data_received), color_button);
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g_signal_connect (color_button, "drag-data-get",
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G_CALLBACK (gtk_color_button_drag_data_get), color_button);
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gtk_widget_pop_composite_child ();
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}
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static void
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gtk_color_button_finalize (GObject *object)
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{
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GtkColorButton *color_button = GTK_COLOR_BUTTON (object);
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if (color_button->priv->cs_dialog != NULL)
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gtk_widget_destroy (color_button->priv->cs_dialog);
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color_button->priv->cs_dialog = NULL;
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g_free (color_button->priv->title);
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color_button->priv->title = NULL;
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G_OBJECT_CLASS (gtk_color_button_parent_class)->finalize (object);
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}
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/**
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* gtk_color_button_new:
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*
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* Creates a new color button. This returns a widget in the form of
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* 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);
|
|
|
|
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_is_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;
|
|
|
|
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;
|
|
|
|
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: (out): 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;
|
|
|
|
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
|
|
*/
|
|
const 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;
|
|
}
|
|
}
|
|
|
|
#define __GTK_COLOR_BUTTON_C__
|
|
#include "gtkaliasdef.c"
|