mirror of https://github.com/GNOME/gimp.git
159 lines
4.1 KiB
C
159 lines
4.1 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* gimpbutton.c
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* Copyright (C) 2000-2008 Michael Natterer <mitch@gimp.org>
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "gimpwidgetstypes.h"
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#include "gimpbutton.h"
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/**
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* SECTION: gimpbutton
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* @title: GimpButton
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* @short_description: A #GtkButton with a little extra functionality.
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*
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* #GimpButton adds an extra signal to the #GtkButton widget that
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* allows to distinguish a normal click from a click that was
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* performed with modifier keys pressed.
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**/
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enum
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{
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EXTENDED_CLICKED,
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LAST_SIGNAL
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};
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static gboolean gimp_button_button_press (GtkWidget *widget,
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GdkEventButton *event);
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static void gimp_button_clicked (GtkButton *button);
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G_DEFINE_TYPE (GimpButton, gimp_button, GTK_TYPE_BUTTON)
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#define parent_class gimp_button_parent_class
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static guint button_signals[LAST_SIGNAL] = { 0 };
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static void
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gimp_button_class_init (GimpButtonClass *klass)
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{
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass);
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/**
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* GimpButton::extended-clicked:
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* @gimpbutton: the object that received the signal.
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* @arg1: the state of modifier keys when the button was clicked
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*
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* This signal is emitted when the button is clicked with a modifier
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* key pressed.
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**/
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button_signals[EXTENDED_CLICKED] =
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g_signal_new ("extended-clicked",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GimpButtonClass, extended_clicked),
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NULL, NULL,
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g_cclosure_marshal_VOID__FLAGS,
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G_TYPE_NONE, 1,
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GDK_TYPE_MODIFIER_TYPE);
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widget_class->button_press_event = gimp_button_button_press;
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button_class->clicked = gimp_button_clicked;
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}
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static void
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gimp_button_init (GimpButton *button)
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{
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button->press_state = 0;
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}
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/**
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* gimp_button_new:
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*
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* Creates a new #GimpButton widget.
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*
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* Returns: A pointer to the new #GimpButton widget.
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**/
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GtkWidget *
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gimp_button_new (void)
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{
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return g_object_new (GIMP_TYPE_BUTTON, NULL);
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}
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/**
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* gimp_button_extended_clicked:
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* @button: a #GimpButton.
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* @state: a state as found in #GdkEventButton->state, e.g. #GDK_SHIFT_MASK.
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*
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* Emits the button's "extended_clicked" signal.
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**/
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void
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gimp_button_extended_clicked (GimpButton *button,
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GdkModifierType state)
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{
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g_return_if_fail (GIMP_IS_BUTTON (button));
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g_signal_emit (button, button_signals[EXTENDED_CLICKED], 0, state);
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}
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static gboolean
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gimp_button_button_press (GtkWidget *widget,
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GdkEventButton *bevent)
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{
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GimpButton *button = GIMP_BUTTON (widget);
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if (bevent->button == 1)
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{
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button->press_state = bevent->state;
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}
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else
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{
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button->press_state = 0;
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}
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return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, bevent);
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}
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static void
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gimp_button_clicked (GtkButton *button)
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{
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if (GIMP_BUTTON (button)->press_state &
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(GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK))
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{
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g_signal_stop_emission_by_name (button, "clicked");
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gimp_button_extended_clicked (GIMP_BUTTON (button),
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GIMP_BUTTON (button)->press_state);
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}
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else if (GTK_BUTTON_CLASS (parent_class)->clicked)
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{
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GTK_BUTTON_CLASS (parent_class)->clicked (button);
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}
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}
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