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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpbutton.c
* Copyright (C) 2000 Michael Natterer <mitch@gimp.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "gimpwidgetstypes.h"
#include "gimpbutton.h"
enum
{
EXTENDED_CLICKED,
LAST_SIGNAL
};
static void gimp_button_class_init (GimpButtonClass *klass);
static void gimp_button_init (GimpButton *button);
static gboolean gimp_button_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gimp_button_button_release (GtkWidget *widget,
GdkEventButton *event);
static guint button_signals[LAST_SIGNAL] = { 0 };
static GtkButtonClass *parent_class = NULL;
GType
gimp_button_get_type (void)
{
static GType button_type = 0;
if (! button_type)
{
static const GTypeInfo button_info =
{
sizeof (GimpButtonClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_button_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpButton),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_button_init,
};
button_type = g_type_register_static (GTK_TYPE_BUTTON,
"GimpButton",
&button_info, 0);
}
return button_type;
}
static void
gimp_button_class_init (GimpButtonClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = G_OBJECT_CLASS (klass);
widget_class = GTK_WIDGET_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
button_signals[EXTENDED_CLICKED] =
g_signal_new ("extended_clicked",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpButtonClass, extended_clicked),
NULL, NULL,
g_cclosure_marshal_VOID__FLAGS,
G_TYPE_NONE, 1,
GDK_TYPE_MODIFIER_TYPE);
widget_class->button_press_event = gimp_button_button_press;
widget_class->button_release_event = gimp_button_button_release;
}
static void
gimp_button_init (GimpButton *button)
{
button->press_state = 0;
}
/**
* gimp_button_new:
*
* Creates a new #GimpButton widget.
*
* Returns: A pointer to the new #GimpButton widget.
**/
GtkWidget *
gimp_button_new (void)
{
GimpButton *button;
button = g_object_new (GIMP_TYPE_BUTTON, NULL);
return GTK_WIDGET (button);
}
/**
* gimp_button_extended_clicked:
* @button: a #GimpButton.
* @state: a state as found in #GdkEventButton->state, e.g. #GDK_SHIFT_MASK.
*
* Emits the button's "extended_clicked" signal.
**/
void
gimp_button_extended_clicked (GimpButton *button,
GdkModifierType state)
{
g_return_if_fail (GIMP_IS_BUTTON (button));
g_signal_emit (button, button_signals[EXTENDED_CLICKED], 0, state);
}
static gboolean
gimp_button_button_press (GtkWidget *widget,
GdkEventButton *bevent)
{
GimpButton *button;
g_return_val_if_fail (GIMP_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (bevent != NULL, FALSE);
button = GIMP_BUTTON (widget);
if (bevent->button == 1)
{
button->press_state = bevent->state;
}
else
{
button->press_state = 0;
}
if (GTK_WIDGET_CLASS (parent_class)->button_press_event)
return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, bevent);
return TRUE;
}
static gboolean
gimp_button_button_release (GtkWidget *widget,
GdkEventButton *bevent)
{
GtkButton *button;
gboolean extended_clicked = FALSE;
g_return_val_if_fail (GIMP_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (bevent != NULL, FALSE);
button = GTK_BUTTON (widget);
if (bevent->button == 1)
{
if (button->in_button &&
(GIMP_BUTTON (button)->press_state &
(GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK)))
{
gimp_button_extended_clicked (GIMP_BUTTON (button),
GIMP_BUTTON (button)->press_state);
extended_clicked = TRUE;
/* HACK: don't let GtkButton emit "clicked" by telling it that
* the mouse pointer is outside the widget
*/
button->in_button = FALSE;
}
}
if (GTK_WIDGET_CLASS (parent_class)->button_release_event)
GTK_WIDGET_CLASS (parent_class)->button_release_event (widget, bevent);
if (extended_clicked)
{
/* revert the above HACK and let the button draw itself in the
* correct state, because upchaining with "in_button" == FALSE
* messed it up
*/
button->in_button = TRUE;
gtk_widget_set_state (widget, GTK_STATE_PRELIGHT);
gtk_widget_queue_draw (widget);
gdk_window_process_updates (widget->window, TRUE);
}
return TRUE;
}
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