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gimp/app/widgets/gimppopup.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimppopup.c
* Copyright (C) 2003-2014 Michael Natterer <mitch@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimpmarshal.h"
#include "gimppopup.h"
enum
{
CANCEL,
CONFIRM,
LAST_SIGNAL
};
static gboolean gimp_popup_map_event (GtkWidget *widget,
GdkEventAny *event);
static gboolean gimp_popup_button_press (GtkWidget *widget,
GdkEventButton *bevent);
static gboolean gimp_popup_key_press (GtkWidget *widget,
GdkEventKey *kevent);
static void gimp_popup_real_cancel (GimpPopup *popup);
static void gimp_popup_real_confirm (GimpPopup *popup);
G_DEFINE_TYPE (GimpPopup, gimp_popup, GTK_TYPE_WINDOW)
#define parent_class gimp_popup_parent_class
static guint popup_signals[LAST_SIGNAL];
static void
gimp_popup_class_init (GimpPopupClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkBindingSet *binding_set;
popup_signals[CANCEL] =
g_signal_new ("cancel",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GimpPopupClass, cancel),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
popup_signals[CONFIRM] =
g_signal_new ("confirm",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GimpPopupClass, confirm),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
widget_class->map_event = gimp_popup_map_event;
widget_class->button_press_event = gimp_popup_button_press;
widget_class->key_press_event = gimp_popup_key_press;
klass->cancel = gimp_popup_real_cancel;
klass->confirm = gimp_popup_real_confirm;
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
"cancel", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
"confirm", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
"confirm", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
"confirm", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0,
"confirm", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0,
"confirm", 0);
}
static void
gimp_popup_init (GimpPopup *popup)
{
}
static void
gimp_popup_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
if (was_grabbed)
return;
/* ignore grabs on one of our children, like a scrollbar */
if (gtk_widget_is_ancestor (gtk_grab_get_current (), widget))
return;
g_signal_emit (widget, popup_signals[CANCEL], 0);
}
static gboolean
gimp_popup_grab_broken_event (GtkWidget *widget,
GdkEventGrabBroken *event)
{
gimp_popup_grab_notify (widget, FALSE);
return FALSE;
}
static gboolean
gimp_popup_map_event (GtkWidget *widget,
G_GNUC_UNUSED GdkEventAny *event)
{
GTK_WIDGET_CLASS (parent_class)->map_event (widget, event);
/* grab with owner_events == TRUE so the popup's widgets can
* receive events. we filter away events outside this toplevel
* away in button_press()
*/
if (gdk_pointer_grab (gtk_widget_get_window (widget), TRUE,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL, GDK_CURRENT_TIME) == GDK_GRAB_SUCCESS)
{
if (gdk_keyboard_grab (gtk_widget_get_window (widget), TRUE,
GDK_CURRENT_TIME) == GDK_GRAB_SUCCESS)
{
gtk_grab_add (widget);
g_signal_connect (widget, "grab-notify",
G_CALLBACK (gimp_popup_grab_notify),
widget);
g_signal_connect (widget, "grab-broken-event",
G_CALLBACK (gimp_popup_grab_broken_event),
widget);
return FALSE;
}
else
{
gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
GDK_CURRENT_TIME);
}
}
/* if we could not grab, destroy the popup instead of leaving it
* around uncloseable.
*/
g_signal_emit (widget, popup_signals[CANCEL], 0);
return FALSE;
}
static gboolean
gimp_popup_button_press (GtkWidget *widget,
GdkEventButton *bevent)
{
GtkWidget *event_widget;
gboolean cancel = FALSE;
event_widget = gtk_get_event_widget ((GdkEvent *) bevent);
if (event_widget == widget)
{
GtkAllocation allocation;
gtk_widget_get_allocation (widget, &allocation);
/* the event was on the popup, which can either be really on the
* popup or outside gimp (owner_events == TRUE, see map())
*/
if (bevent->x < 0 ||
bevent->y < 0 ||
bevent->x > allocation.width ||
bevent->y > allocation.height)
{
/* the event was outsde gimp */
cancel = TRUE;
}
}
else if (gtk_widget_get_toplevel (event_widget) != widget)
{
/* the event was on a gimp widget, but not inside the popup */
cancel = TRUE;
}
if (cancel)
g_signal_emit (widget, popup_signals[CANCEL], 0);
return cancel;
}
static gboolean
gimp_popup_key_press (GtkWidget *widget,
GdkEventKey *kevent)
{
GtkWidget *focus = gtk_window_get_focus (GTK_WINDOW (widget));
gboolean activate_binding = TRUE;
if (focus &&
(GTK_IS_EDITABLE (focus) ||
GTK_IS_TEXT_VIEW (focus)) &&
(kevent->keyval == GDK_KEY_space ||
kevent->keyval == GDK_KEY_KP_Space))
{
/* if a text widget has the focus, and the key was space,
* don't manually activate the binding to allow entering the
* space in the focus widget.
*/
activate_binding = FALSE;
}
if (activate_binding)
{
GtkBindingSet *binding_set;
binding_set = gtk_binding_set_by_class (g_type_class_peek (GIMP_TYPE_POPUP));
/* invoke the popup's binding entries manually, because
* otherwise the focus widget (GtkTreeView e.g.) would consume
* it
*/
if (gtk_binding_set_activate (binding_set,
kevent->keyval,
kevent->state,
GTK_OBJECT (widget)))
{
return TRUE;
}
}
return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, kevent);
}
static void
gimp_popup_real_cancel (GimpPopup *popup)
{
GtkWidget *widget = GTK_WIDGET (popup);
if (gtk_grab_get_current () == widget)
gtk_grab_remove (widget);
gtk_widget_destroy (widget);
}
static void
gimp_popup_real_confirm (GimpPopup *popup)
{
GtkWidget *widget = GTK_WIDGET (popup);
if (gtk_grab_get_current () == widget)
gtk_grab_remove (widget);
gtk_widget_destroy (widget);
}
void
gimp_popup_show (GimpPopup *popup,
GtkWidget *widget)
{
GdkScreen *screen;
GtkRequisition requisition;
GtkAllocation allocation;
GdkRectangle rect;
gint monitor;
gint orig_x;
gint orig_y;
gint x;
gint y;
g_return_if_fail (GIMP_IS_POPUP (popup));
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_widget_size_request (GTK_WIDGET (popup), &requisition);
gtk_widget_get_allocation (widget, &allocation);
gdk_window_get_origin (gtk_widget_get_window (widget), &orig_x, &orig_y);
if (! gtk_widget_get_has_window (widget))
{
orig_x += allocation.x;
orig_y += allocation.y;
}
screen = gtk_widget_get_screen (widget);
monitor = gdk_screen_get_monitor_at_point (screen, orig_x, orig_y);
gdk_screen_get_monitor_workarea (screen, monitor, &rect);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
x = orig_x + allocation.width - requisition.width;
if (x < rect.x)
x -= allocation.width - requisition.width;
}
else
{
x = orig_x;
if (x + requisition.width > rect.x + rect.width)
x += allocation.width - requisition.width;
}
y = orig_y + allocation.height;
if (y + requisition.height > rect.y + rect.height)
y = orig_y - requisition.height;
gtk_window_set_screen (GTK_WINDOW (popup), screen);
gtk_window_set_transient_for (GTK_WINDOW (popup),
GTK_WINDOW (gtk_widget_get_toplevel (widget)));
gtk_window_move (GTK_WINDOW (popup), x, y);
gtk_widget_show (GTK_WIDGET (popup));
}
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