* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * 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
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library 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.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "gtksignal.h"
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#include "config.h"
+#include <gdk/gdk.h>
#include "gtkinvisible.h"
+#include "gtkwidgetprivate.h"
+#include "gtkprivate.h"
+#include "gtkintl.h"
+
+
+/**
+ * SECTION:gtkinvisible
+ * @Short_description: A widget which is not displayed
+ * @Title: GtkInvisible
+ *
+ * The #GtkInvisible widget is used internally in GTK+, and is probably not
+ * very useful for application developers.
+ *
+ * It is used for reliable pointer grabs and selection handling in the code
+ * for drag-and-drop.
+ */
-static void gtk_invisible_class_init (GtkInvisibleClass *klass);
-static void gtk_invisible_init (GtkInvisible *invisible);
-static void gtk_invisible_realize (GtkWidget *widget);
-static void gtk_invisible_show (GtkWidget *widget);
-static void gtk_invisible_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-GtkType
-gtk_invisible_get_type (void)
+struct _GtkInvisiblePrivate
{
- static GtkType invisible_type = 0;
+ GdkScreen *screen;
+ gboolean has_user_ref_count;
+};
- if (!invisible_type)
- {
- GtkTypeInfo invisible_info =
- {
- "GtkInvisible",
- sizeof (GtkInvisible),
- sizeof (GtkInvisibleClass),
- (GtkClassInitFunc) gtk_invisible_class_init,
- (GtkObjectInitFunc) gtk_invisible_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
- };
-
- invisible_type = gtk_type_unique (GTK_TYPE_WIDGET, &invisible_info);
- }
+enum {
+ PROP_0,
+ PROP_SCREEN,
+ LAST_ARG
+};
- return invisible_type;
-}
+static void gtk_invisible_destroy (GtkWidget *widget);
+static void gtk_invisible_realize (GtkWidget *widget);
+static void gtk_invisible_style_updated (GtkWidget *widget);
+static void gtk_invisible_show (GtkWidget *widget);
+static void gtk_invisible_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void gtk_invisible_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gtk_invisible_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static GObject *gtk_invisible_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_params);
+
+G_DEFINE_TYPE (GtkInvisible, gtk_invisible, GTK_TYPE_WIDGET)
static void
gtk_invisible_class_init (GtkInvisibleClass *class)
{
+ GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass*) class;
+ gobject_class = (GObjectClass*) class;
widget_class->realize = gtk_invisible_realize;
+ widget_class->style_updated = gtk_invisible_style_updated;
widget_class->show = gtk_invisible_show;
widget_class->size_allocate = gtk_invisible_size_allocate;
+ widget_class->destroy = gtk_invisible_destroy;
+
+ gobject_class->set_property = gtk_invisible_set_property;
+ gobject_class->get_property = gtk_invisible_get_property;
+ gobject_class->constructor = gtk_invisible_constructor;
+
+ g_object_class_install_property (gobject_class,
+ PROP_SCREEN,
+ g_param_spec_object ("screen",
+ P_("Screen"),
+ P_("The screen where this window will be displayed"),
+ GDK_TYPE_SCREEN,
+ GTK_PARAM_READWRITE));
+
+ g_type_class_add_private (class, sizeof (GtkInvisiblePrivate));
}
static void
gtk_invisible_init (GtkInvisible *invisible)
{
- GTK_WIDGET_UNSET_FLAGS (invisible, GTK_NO_WINDOW);
+ GtkInvisiblePrivate *priv;
+
+ invisible->priv = G_TYPE_INSTANCE_GET_PRIVATE (invisible,
+ GTK_TYPE_INVISIBLE,
+ GtkInvisiblePrivate);
+ priv = invisible->priv;
+
+ gtk_widget_set_has_window (GTK_WIDGET (invisible), TRUE);
+ _gtk_widget_set_is_toplevel (GTK_WIDGET (invisible), TRUE);
+
+ g_object_ref_sink (invisible);
+
+ priv->has_user_ref_count = TRUE;
+ priv->screen = gdk_screen_get_default ();
+}
+
+static void
+gtk_invisible_destroy (GtkWidget *widget)
+{
+ GtkInvisible *invisible = GTK_INVISIBLE (widget);
+ GtkInvisiblePrivate *priv = invisible->priv;
- gtk_widget_ref (GTK_WIDGET (invisible));
- gtk_object_sink (GTK_OBJECT (invisible));
+ if (priv->has_user_ref_count)
+ {
+ priv->has_user_ref_count = FALSE;
+ g_object_unref (invisible);
+ }
+
+ GTK_WIDGET_CLASS (gtk_invisible_parent_class)->destroy (widget);
}
+/**
+ * gtk_invisible_new_for_screen:
+ * @screen: a #GdkScreen which identifies on which
+ * the new #GtkInvisible will be created.
+ *
+ * Creates a new #GtkInvisible object for a specified screen
+ *
+ * Return value: a newly created #GtkInvisible object
+ *
+ * Since: 2.2
+ **/
+GtkWidget*
+gtk_invisible_new_for_screen (GdkScreen *screen)
+{
+ g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
+
+ return g_object_new (GTK_TYPE_INVISIBLE, "screen", screen, NULL);
+}
+
+/**
+ * gtk_invisible_new:
+ *
+ * Creates a new #GtkInvisible.
+ *
+ * Return value: a new #GtkInvisible.
+ **/
GtkWidget*
gtk_invisible_new (void)
{
- return GTK_WIDGET (gtk_type_new (GTK_TYPE_INVISIBLE));
+ return g_object_new (GTK_TYPE_INVISIBLE, NULL);
+}
+
+/**
+ * gtk_invisible_set_screen:
+ * @invisible: a #GtkInvisible.
+ * @screen: a #GdkScreen.
+ *
+ * Sets the #GdkScreen where the #GtkInvisible object will be displayed.
+ *
+ * Since: 2.2
+ **/
+void
+gtk_invisible_set_screen (GtkInvisible *invisible,
+ GdkScreen *screen)
+{
+ GtkInvisiblePrivate *priv;
+ GtkWidget *widget;
+ GdkScreen *previous_screen;
+ gboolean was_realized;
+
+ g_return_if_fail (GTK_IS_INVISIBLE (invisible));
+ g_return_if_fail (GDK_IS_SCREEN (screen));
+
+ priv = invisible->priv;
+
+ if (screen == priv->screen)
+ return;
+
+ widget = GTK_WIDGET (invisible);
+
+ previous_screen = priv->screen;
+ was_realized = gtk_widget_get_realized (widget);
+
+ if (was_realized)
+ gtk_widget_unrealize (widget);
+
+ priv->screen = screen;
+ if (screen != previous_screen)
+ _gtk_widget_propagate_screen_changed (widget, previous_screen);
+ g_object_notify (G_OBJECT (invisible), "screen");
+
+ if (was_realized)
+ gtk_widget_realize (widget);
+}
+
+/**
+ * gtk_invisible_get_screen:
+ * @invisible: a #GtkInvisible.
+ *
+ * Returns the #GdkScreen object associated with @invisible
+ *
+ * Return value: (transfer none): the associated #GdkScreen.
+ *
+ * Since: 2.2
+ **/
+GdkScreen *
+gtk_invisible_get_screen (GtkInvisible *invisible)
+{
+ g_return_val_if_fail (GTK_IS_INVISIBLE (invisible), NULL);
+
+ return invisible->priv->screen;
}
static void
gtk_invisible_realize (GtkWidget *widget)
{
+ GdkWindow *parent;
+ GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_INVISIBLE (widget));
+ gtk_widget_set_realized (widget, TRUE);
- GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+ parent = gtk_widget_get_parent_window (widget);
+ if (parent == NULL)
+ parent = gtk_widget_get_root_window (widget);
attributes.x = -100;
attributes.y = -100;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
- widget->window = gdk_window_new (NULL, &attributes, attributes_mask);
- gdk_window_set_user_data (widget->window, widget);
+ window = gdk_window_new (parent, &attributes, attributes_mask);
+ gtk_widget_set_window (widget, window);
+ gtk_widget_register_window (widget, window);
}
static void
-gtk_invisible_show (GtkWidget *widget)
+gtk_invisible_style_updated (GtkWidget *widget)
{
- g_return_if_fail (widget != NULL);
+ /* Don't chain up to parent implementation */
+}
- GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
+static void
+gtk_invisible_show (GtkWidget *widget)
+{
+ _gtk_widget_set_visible_flag (widget, TRUE);
gtk_widget_map (widget);
}
static void
gtk_invisible_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
+ GtkAllocation *allocation)
{
- widget->allocation = *allocation;
+ gtk_widget_set_allocation (widget, allocation);
+}
+
+
+static void
+gtk_invisible_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkInvisible *invisible = GTK_INVISIBLE (object);
+
+ switch (prop_id)
+ {
+ case PROP_SCREEN:
+ gtk_invisible_set_screen (invisible, g_value_get_object (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_invisible_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkInvisible *invisible = GTK_INVISIBLE (object);
+ GtkInvisiblePrivate *priv = invisible->priv;
+
+ switch (prop_id)
+ {
+ case PROP_SCREEN:
+ g_value_set_object (value, priv->screen);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* We use a constructor here so that we can realize the invisible on
+ * the correct screen after the "screen" property has been set
+ */
+static GObject*
+gtk_invisible_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_params)
+{
+ GObject *object;
+
+ object = G_OBJECT_CLASS (gtk_invisible_parent_class)->constructor (type,
+ n_construct_properties,
+ construct_params);
+
+ gtk_widget_realize (GTK_WIDGET (object));
+
+ return object;
}
projects / ~andy / gtk / blobdiff