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gtk2/gtk/gtkwindow.c
Tim Janik afee2c67c5 applied patch from Andreas Persenius <ndap@swipnet.se> that updates the 
Wed Jul 26 12:59:31 2000  Tim Janik  <timj@gtk.org>

        * *.[hc]: applied patch from Andreas Persenius <ndap@swipnet.se> that
        updates the license headers to the GNU Lesser General Public License,
        as well as updating the copyright year to 2000.
2000-07-26 11:33:08 +00:00

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/* GTK - The GIMP Toolkit
* 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 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.
*/
/*
* 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 <string.h>
#include <limits.h>
#include "gdk/gdk.h"
#include "gdk/gdkkeysyms.h"
#if defined (GDK_WINDOWING_X11)
#include "x11/gdkx.h"
#elif defined (GDK_WINDOWING_WIN32)
#include "win32/gdkwin32.h"
#elif defined (GDK_WINDOWING_NANOX)
#include "nanox/gdkprivate-nanox.h"
#elif defined (GDK_WINDOWING_FB)
#include "linux-fb/gdkfb.h"
#endif
#include "gtkprivate.h"
#include "gtkrc.h"
#include "gtksignal.h"
#include "gtkwindow.h"
#include "gtkbindings.h"
#include "gtkmain.h"
/* TODO: remove this define and assorted code in 1.3 and fix up the
* real culprits.
*/
#define FIXME_ZVT_ME_HARDER
enum {
SET_FOCUS,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_TYPE,
ARG_TITLE,
ARG_AUTO_SHRINK,
ARG_ALLOW_SHRINK,
ARG_ALLOW_GROW,
ARG_MODAL,
ARG_WIN_POS,
ARG_DEFAULT_WIDTH,
ARG_DEFAULT_HEIGHT
};
typedef struct {
GdkGeometry geometry; /* Last set of geometry hints we set */
GdkWindowHints flags;
gint width;
gint height;
} GtkWindowLastGeometryInfo;
typedef struct {
/* Properties that the app has set on the window
*/
GdkGeometry geometry; /* Geometry hints */
GdkWindowHints mask;
GtkWidget *widget; /* subwidget to which hints apply */
gint width; /* Default size */
gint height;
GtkWindowLastGeometryInfo last;
} GtkWindowGeometryInfo;
static void gtk_window_class_init (GtkWindowClass *klass);
static void gtk_window_init (GtkWindow *window);
static void gtk_window_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_window_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_window_shutdown (GObject *object);
static void gtk_window_destroy (GtkObject *object);
static void gtk_window_finalize (GObject *object);
static void gtk_window_show (GtkWidget *widget);
static void gtk_window_hide (GtkWidget *widget);
static void gtk_window_map (GtkWidget *widget);
static void gtk_window_unmap (GtkWidget *widget);
static void gtk_window_realize (GtkWidget *widget);
static void gtk_window_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_window_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_window_configure_event (GtkWidget *widget,
GdkEventConfigure *event);
static gint gtk_window_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_window_key_release_event (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_window_enter_notify_event (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_window_leave_notify_event (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_window_focus_in_event (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_window_focus_out_event (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_window_client_event (GtkWidget *widget,
GdkEventClient *event);
static void gtk_window_check_resize (GtkContainer *container);
static void gtk_window_real_set_focus (GtkWindow *window,
GtkWidget *focus);
static void gtk_window_move_resize (GtkWindow *window);
static gboolean gtk_window_compare_hints (GdkGeometry *geometry_a,
guint flags_a,
GdkGeometry *geometry_b,
guint flags_b);
static void gtk_window_compute_default_size (GtkWindow *window,
guint *width,
guint *height);
static void gtk_window_constrain_size (GtkWindow *window,
GdkGeometry *geometry,
guint flags,
gint width,
gint height,
gint *new_width,
gint *new_height);
static void gtk_window_compute_hints (GtkWindow *window,
GdkGeometry *new_geometry,
guint *new_flags);
static void gtk_window_compute_reposition (GtkWindow *window,
gint new_width,
gint new_height,
gint *x,
gint *y);
static void gtk_window_read_rcfiles (GtkWidget *widget,
GdkEventClient *event);
static void gtk_window_draw (GtkWidget *widget,
GdkRectangle *area);
static void gtk_window_paint (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_window_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_window_unset_transient_for (GtkWindow *window);
static void gtk_window_transient_parent_realized (GtkWidget *parent,
GtkWidget *window);
static void gtk_window_transient_parent_unrealized (GtkWidget *parent,
GtkWidget *window);
static GtkWindowGeometryInfo* gtk_window_get_geometry_info (GtkWindow *window,
gboolean create);
static void gtk_window_geometry_destroy (GtkWindowGeometryInfo *info);
static GSList *toplevel_list = NULL;
static GtkBinClass *parent_class = NULL;
static guint window_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_window_get_type (void)
{
static GtkType window_type = 0;
if (!window_type)
{
static const GtkTypeInfo window_info =
{
"GtkWindow",
sizeof (GtkWindow),
sizeof (GtkWindowClass),
(GtkClassInitFunc) gtk_window_class_init,
(GtkObjectInitFunc) gtk_window_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
window_type = gtk_type_unique (gtk_bin_get_type (), &window_info);
}
return window_type;
}
static void
gtk_window_class_init (GtkWindowClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
container_class = (GtkContainerClass*) klass;
parent_class = gtk_type_class (gtk_bin_get_type ());
gobject_class->shutdown = gtk_window_shutdown;
gobject_class->finalize = gtk_window_finalize;
gtk_object_add_arg_type ("GtkWindow::type", GTK_TYPE_WINDOW_TYPE, GTK_ARG_READWRITE, ARG_TYPE);
gtk_object_add_arg_type ("GtkWindow::title", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_TITLE);
gtk_object_add_arg_type ("GtkWindow::auto_shrink", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_AUTO_SHRINK);
gtk_object_add_arg_type ("GtkWindow::allow_shrink", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_ALLOW_SHRINK);
gtk_object_add_arg_type ("GtkWindow::allow_grow", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_ALLOW_GROW);
gtk_object_add_arg_type ("GtkWindow::modal", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_MODAL);
gtk_object_add_arg_type ("GtkWindow::window_position", GTK_TYPE_WINDOW_POSITION, GTK_ARG_READWRITE, ARG_WIN_POS);
gtk_object_add_arg_type ("GtkWindow::default_width", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_DEFAULT_WIDTH);
gtk_object_add_arg_type ("GtkWindow::default_height", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_DEFAULT_HEIGHT);
window_signals[SET_FOCUS] =
gtk_signal_new ("set_focus",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWindowClass, set_focus),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
gtk_object_class_add_signals (object_class, window_signals, LAST_SIGNAL);
object_class->set_arg = gtk_window_set_arg;
object_class->get_arg = gtk_window_get_arg;
object_class->destroy = gtk_window_destroy;
widget_class->show = gtk_window_show;
widget_class->hide = gtk_window_hide;
widget_class->map = gtk_window_map;
widget_class->unmap = gtk_window_unmap;
widget_class->realize = gtk_window_realize;
widget_class->size_request = gtk_window_size_request;
widget_class->size_allocate = gtk_window_size_allocate;
widget_class->configure_event = gtk_window_configure_event;
widget_class->key_press_event = gtk_window_key_press_event;
widget_class->key_release_event = gtk_window_key_release_event;
widget_class->enter_notify_event = gtk_window_enter_notify_event;
widget_class->leave_notify_event = gtk_window_leave_notify_event;
widget_class->focus_in_event = gtk_window_focus_in_event;
widget_class->focus_out_event = gtk_window_focus_out_event;
widget_class->client_event = gtk_window_client_event;
widget_class->draw = gtk_window_draw;
widget_class->expose_event = gtk_window_expose;
container_class->check_resize = gtk_window_check_resize;
klass->set_focus = gtk_window_real_set_focus;
}
static void
gtk_window_init (GtkWindow *window)
{
GTK_WIDGET_UNSET_FLAGS (window, GTK_NO_WINDOW);
GTK_WIDGET_SET_FLAGS (window, GTK_TOPLEVEL);
gtk_container_set_resize_mode (GTK_CONTAINER (window), GTK_RESIZE_QUEUE);
window->title = NULL;
window->wmclass_name = g_strdup (g_get_prgname ());
window->wmclass_class = g_strdup (gdk_progclass);
window->type = GTK_WINDOW_TOPLEVEL;
window->focus_widget = NULL;
window->default_widget = NULL;
window->resize_count = 0;
window->allow_shrink = FALSE;
window->allow_grow = TRUE;
window->auto_shrink = FALSE;
window->handling_resize = FALSE;
window->position = GTK_WIN_POS_NONE;
window->use_uposition = TRUE;
window->modal = FALSE;
gtk_widget_ref (GTK_WIDGET (window));
gtk_object_sink (GTK_OBJECT (window));
window->has_user_ref_count = TRUE;
toplevel_list = g_slist_prepend (toplevel_list, window);
}
static void
gtk_window_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkWindow *window;
window = GTK_WINDOW (object);
switch (arg_id)
{
case ARG_TYPE:
window->type = GTK_VALUE_ENUM (*arg);
break;
case ARG_TITLE:
gtk_window_set_title (window, GTK_VALUE_STRING (*arg));
break;
case ARG_AUTO_SHRINK:
window->auto_shrink = (GTK_VALUE_BOOL (*arg) != FALSE);
gtk_widget_queue_resize (GTK_WIDGET (window));
break;
case ARG_ALLOW_SHRINK:
window->allow_shrink = (GTK_VALUE_BOOL (*arg) != FALSE);
gtk_widget_queue_resize (GTK_WIDGET (window));
break;
case ARG_ALLOW_GROW:
window->allow_grow = (GTK_VALUE_BOOL (*arg) != FALSE);
gtk_widget_queue_resize (GTK_WIDGET (window));
break;
case ARG_MODAL:
gtk_window_set_modal (window, GTK_VALUE_BOOL (*arg));
break;
case ARG_WIN_POS:
gtk_window_set_position (window, GTK_VALUE_ENUM (*arg));
break;
case ARG_DEFAULT_WIDTH:
gtk_window_set_default_size (window, GTK_VALUE_INT (*arg), -2);
break;
case ARG_DEFAULT_HEIGHT:
gtk_window_set_default_size (window, -2, GTK_VALUE_INT (*arg));
break;
default:
break;
}
}
static void
gtk_window_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkWindow *window;
window = GTK_WINDOW (object);
switch (arg_id)
{
GtkWindowGeometryInfo *info;
case ARG_TYPE:
GTK_VALUE_ENUM (*arg) = window->type;
break;
case ARG_TITLE:
GTK_VALUE_STRING (*arg) = g_strdup (window->title);
break;
case ARG_AUTO_SHRINK:
GTK_VALUE_BOOL (*arg) = window->auto_shrink;
break;
case ARG_ALLOW_SHRINK:
GTK_VALUE_BOOL (*arg) = window->allow_shrink;
break;
case ARG_ALLOW_GROW:
GTK_VALUE_BOOL (*arg) = window->allow_grow;
break;
case ARG_MODAL:
GTK_VALUE_BOOL (*arg) = window->modal;
break;
case ARG_WIN_POS:
GTK_VALUE_ENUM (*arg) = window->position;
break;
case ARG_DEFAULT_WIDTH:
info = gtk_window_get_geometry_info (window, FALSE);
if (!info)
GTK_VALUE_INT (*arg) = -1;
else
GTK_VALUE_INT (*arg) = info->width;
break;
case ARG_DEFAULT_HEIGHT:
info = gtk_window_get_geometry_info (window, FALSE);
if (!info)
GTK_VALUE_INT (*arg) = -1;
else
GTK_VALUE_INT (*arg) = info->height;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
GtkWidget*
gtk_window_new (GtkWindowType type)
{
GtkWindow *window;
g_return_val_if_fail (type >= GTK_WINDOW_TOPLEVEL && type <= GTK_WINDOW_POPUP, NULL);
window = gtk_type_new (GTK_TYPE_WINDOW);
window->type = type;
return GTK_WIDGET (window);
}
void
gtk_window_set_title (GtkWindow *window,
const gchar *title)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
if (window->title)
g_free (window->title);
window->title = g_strdup (title);
if (GTK_WIDGET_REALIZED (window))
gdk_window_set_title (GTK_WIDGET (window)->window, window->title);
}
void
gtk_window_set_wmclass (GtkWindow *window,
const gchar *wmclass_name,
const gchar *wmclass_class)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
g_free (window->wmclass_name);
window->wmclass_name = g_strdup (wmclass_name);
g_free (window->wmclass_class);
window->wmclass_class = g_strdup (wmclass_class);
if (GTK_WIDGET_REALIZED (window))
g_warning ("shouldn't set wmclass after window is realized!\n");
}
void
gtk_window_set_focus (GtkWindow *window,
GtkWidget *focus)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
if (focus)
{
g_return_if_fail (GTK_IS_WIDGET (focus));
g_return_if_fail (GTK_WIDGET_CAN_FOCUS (focus));
}
if ((window->focus_widget != focus) ||
(focus && !GTK_WIDGET_HAS_FOCUS (focus)))
gtk_signal_emit (GTK_OBJECT (window), window_signals[SET_FOCUS], focus);
}
void
gtk_window_set_default (GtkWindow *window,
GtkWidget *default_widget)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
if (default_widget)
g_return_if_fail (GTK_WIDGET_CAN_DEFAULT (default_widget));
if (window->default_widget != default_widget)
{
if (window->default_widget)
{
GTK_WIDGET_UNSET_FLAGS (window->default_widget, GTK_HAS_DEFAULT);
gtk_widget_draw_default (window->default_widget);
}
window->default_widget = default_widget;
if (window->default_widget)
{
GTK_WIDGET_SET_FLAGS (window->default_widget, GTK_HAS_DEFAULT);
gtk_widget_draw_default (window->default_widget);
}
}
}
void
gtk_window_set_policy (GtkWindow *window,
gint allow_shrink,
gint allow_grow,
gint auto_shrink)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
window->allow_shrink = (allow_shrink != FALSE);
window->allow_grow = (allow_grow != FALSE);
window->auto_shrink = (auto_shrink != FALSE);
gtk_widget_queue_resize (GTK_WIDGET (window));
}
void
gtk_window_add_accel_group (GtkWindow *window,
GtkAccelGroup *accel_group)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
g_return_if_fail (accel_group != NULL);
gtk_accel_group_attach (accel_group, GTK_OBJECT (window));
}
void
gtk_window_remove_accel_group (GtkWindow *window,
GtkAccelGroup *accel_group)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
g_return_if_fail (accel_group != NULL);
gtk_accel_group_detach (accel_group, GTK_OBJECT (window));
}
void
gtk_window_set_position (GtkWindow *window,
GtkWindowPosition position)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
window->position = position;
}
gint
gtk_window_activate_focus (GtkWindow *window)
{
g_return_val_if_fail (window != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (window), FALSE);
if (window->focus_widget)
{
if (GTK_WIDGET_IS_SENSITIVE (window->focus_widget))
gtk_widget_activate (window->focus_widget);
return TRUE;
}
return FALSE;
}
gint
gtk_window_activate_default (GtkWindow *window)
{
g_return_val_if_fail (window != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (window), FALSE);
if (window->default_widget && GTK_WIDGET_IS_SENSITIVE (window->default_widget))
{
gtk_widget_activate (window->default_widget);
return TRUE;
}
return FALSE;
}
void
gtk_window_set_modal (GtkWindow *window,
gboolean modal)
{
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
window->modal = modal != FALSE;
/* adjust desired modality state */
if (GTK_WIDGET_VISIBLE (window) && window->modal)
gtk_grab_add (GTK_WIDGET (window));
else
gtk_grab_remove (GTK_WIDGET (window));
}
GList*
gtk_window_list_toplevels (void)
{
GList *list = NULL;
GSList *slist;
for (slist = toplevel_list; slist; slist = slist->next)
list = g_list_prepend (list, gtk_widget_ref (slist->data));
return list;
}
void
gtk_window_add_embedded_xid (GtkWindow *window, guint xid)
{
GList *embedded_windows;
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
embedded_windows = gtk_object_get_data (GTK_OBJECT (window), "gtk-embedded");
if (embedded_windows)
gtk_object_remove_no_notify_by_id (GTK_OBJECT (window),
g_quark_from_static_string ("gtk-embedded"));
embedded_windows = g_list_prepend (embedded_windows,
GUINT_TO_POINTER (xid));
gtk_object_set_data_full (GTK_OBJECT (window), "gtk-embedded",
embedded_windows,
embedded_windows ?
(GtkDestroyNotify) g_list_free : NULL);
}
void
gtk_window_remove_embedded_xid (GtkWindow *window, guint xid)
{
GList *embedded_windows;
GList *node;
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
embedded_windows = gtk_object_get_data (GTK_OBJECT (window), "gtk-embedded");
if (embedded_windows)
gtk_object_remove_no_notify_by_id (GTK_OBJECT (window),
g_quark_from_static_string ("gtk-embedded"));
node = g_list_find (embedded_windows, GUINT_TO_POINTER (xid));
if (node)
{
embedded_windows = g_list_remove_link (embedded_windows, node);
g_list_free_1 (node);
}
gtk_object_set_data_full (GTK_OBJECT (window),
"gtk-embedded", embedded_windows,
embedded_windows ?
(GtkDestroyNotify) g_list_free : NULL);
}
void
gtk_window_reposition (GtkWindow *window,
gint x,
gint y)
{
GtkWindowGeometryInfo *info;
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
/* keep this in sync with gtk_window_compute_reposition()
*/
if (GTK_WIDGET_REALIZED (window))
{
info = gtk_window_get_geometry_info (window, TRUE);
if (!(info->last.flags & GDK_HINT_POS))
{
info->last.flags |= GDK_HINT_POS;
gdk_window_set_geometry_hints (GTK_WIDGET (window)->window,
&info->last.geometry,
info->last.flags);
}
gdk_window_move (GTK_WIDGET (window)->window, x, y);
}
}
static void
gtk_window_shutdown (GObject *object)
{
GtkWindow *window;
g_return_if_fail (GTK_IS_WINDOW (object));
window = GTK_WINDOW (object);
gtk_window_set_focus (window, NULL);
gtk_window_set_default (window, NULL);
G_OBJECT_CLASS (parent_class)->shutdown (object);
}
static void
gtk_window_transient_parent_realized (GtkWidget *parent,
GtkWidget *window)
{
if (GTK_WIDGET_REALIZED (window))
gdk_window_set_transient_for (window->window, parent->window);
}
static void
gtk_window_transient_parent_unrealized (GtkWidget *parent,
GtkWidget *window)
{
if (GTK_WIDGET_REALIZED (window))
gdk_property_delete (window->window,
gdk_atom_intern ("WM_TRANSIENT_FOR", FALSE));
}
static void
gtk_window_unset_transient_for (GtkWindow *window)
{
if (window->transient_parent)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (window->transient_parent),
GTK_SIGNAL_FUNC (gtk_window_transient_parent_realized),
window);
gtk_signal_disconnect_by_func (GTK_OBJECT (window->transient_parent),
GTK_SIGNAL_FUNC (gtk_window_transient_parent_unrealized),
window);
gtk_signal_disconnect_by_func (GTK_OBJECT (window->transient_parent),
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&window->transient_parent);
window->transient_parent = NULL;
}
}
void
gtk_window_set_transient_for (GtkWindow *window,
GtkWindow *parent)
{
g_return_if_fail (window != 0);
if (window->transient_parent)
{
if (GTK_WIDGET_REALIZED (window) &&
GTK_WIDGET_REALIZED (window->transient_parent) &&
(!parent || !GTK_WIDGET_REALIZED (parent)))
gtk_window_transient_parent_unrealized (GTK_WIDGET (window->transient_parent),
GTK_WIDGET (window));
gtk_window_unset_transient_for (window);
}
window->transient_parent = parent;
if (parent)
{
gtk_signal_connect (GTK_OBJECT (parent), "destroy",
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&window->transient_parent);
gtk_signal_connect (GTK_OBJECT (parent), "realize",
GTK_SIGNAL_FUNC (gtk_window_transient_parent_realized),
window);
gtk_signal_connect (GTK_OBJECT (parent), "unrealize",
GTK_SIGNAL_FUNC (gtk_window_transient_parent_unrealized),
window);
if (GTK_WIDGET_REALIZED (window) &&
GTK_WIDGET_REALIZED (parent))
gtk_window_transient_parent_realized (GTK_WIDGET (parent),
GTK_WIDGET (window));
}
}
static void
gtk_window_geometry_destroy (GtkWindowGeometryInfo *info)
{
if (info->widget)
gtk_signal_disconnect_by_func (GTK_OBJECT (info->widget),
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&info->widget);
g_free (info);
}
static GtkWindowGeometryInfo*
gtk_window_get_geometry_info (GtkWindow *window,
gboolean create)
{
GtkWindowGeometryInfo *info;
info = gtk_object_get_data (GTK_OBJECT (window), "gtk-window-geometry");
if (!info && create)
{
info = g_new0 (GtkWindowGeometryInfo, 1);
info->width = 0;
info->height = 0;
info->last.width = -1;
info->last.height = -1;
info->widget = NULL;
info->mask = 0;
gtk_object_set_data_full (GTK_OBJECT (window),
"gtk-window-geometry",
info,
(GtkDestroyNotify) gtk_window_geometry_destroy);
}
return info;
}
void
gtk_window_set_geometry_hints (GtkWindow *window,
GtkWidget *geometry_widget,
GdkGeometry *geometry,
GdkWindowHints geom_mask)
{
GtkWindowGeometryInfo *info;
g_return_if_fail (window != NULL);
info = gtk_window_get_geometry_info (window, TRUE);
if (info->widget)
gtk_signal_disconnect_by_func (GTK_OBJECT (info->widget),
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&info->widget);
info->widget = geometry_widget;
if (info->widget)
gtk_signal_connect (GTK_OBJECT (geometry_widget), "destroy",
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&info->widget);
if (geometry)
info->geometry = *geometry;
info->mask = geom_mask;
gtk_widget_queue_resize (GTK_WIDGET (window));
}
void
gtk_window_set_default_size (GtkWindow *window,
gint width,
gint height)
{
GtkWindowGeometryInfo *info;
g_return_if_fail (GTK_IS_WINDOW (window));
info = gtk_window_get_geometry_info (window, TRUE);
if (width >= 0)
info->width = width;
if (height >= 0)
info->height = height;
gtk_widget_queue_resize (GTK_WIDGET (window));
}
static void
gtk_window_destroy (GtkObject *object)
{
GtkWindow *window;
g_return_if_fail (GTK_IS_WINDOW (object));
window = GTK_WINDOW (object);
if (window->transient_parent)
gtk_window_unset_transient_for (window);
if (window->has_user_ref_count)
{
window->has_user_ref_count = FALSE;
gtk_widget_unref (GTK_WIDGET (window));
}
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gtk_window_finalize (GObject *object)
{
GtkWindow *window;
g_return_if_fail (GTK_IS_WINDOW (object));
window = GTK_WINDOW (object);
toplevel_list = g_slist_remove (toplevel_list, window);
g_free (window->title);
g_free (window->wmclass_name);
g_free (window->wmclass_class);
G_OBJECT_CLASS(parent_class)->finalize (object);
}
static void
gtk_window_show (GtkWidget *widget)
{
GtkWindow *window = GTK_WINDOW (widget);
GtkContainer *container = GTK_CONTAINER (window);
gboolean need_resize;
GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
need_resize = container->need_resize || !GTK_WIDGET_REALIZED (widget);
container->need_resize = FALSE;
if (need_resize)
{
GtkWindowGeometryInfo *info = gtk_window_get_geometry_info (window, TRUE);
GtkAllocation allocation = { 0, 0 };
GdkGeometry new_geometry;
guint width, height, new_flags;
/* determine default size to initially show the window with */
gtk_widget_size_request (widget, NULL);
gtk_window_compute_default_size (window, &width, &height);
/* save away the last default size for later comparisions */
info->last.width = width;
info->last.height = height;
/* constrain size to geometry */
gtk_window_compute_hints (window, &new_geometry, &new_flags);
gtk_window_constrain_size (window,
&new_geometry, new_flags,
width, height,
&width, &height);
/* and allocate the window */
allocation.width = width;
allocation.height = height;
gtk_widget_size_allocate (widget, &allocation);
if (GTK_WIDGET_REALIZED (widget))
gdk_window_resize (widget->window, width, height);
else
gtk_widget_realize (widget);
}
gtk_container_check_resize (container);
gtk_widget_map (widget);
if (window->modal)
gtk_grab_add (widget);
}
static void
gtk_window_hide (GtkWidget *widget)
{
GtkWindow *window;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WINDOW (widget));
window = GTK_WINDOW (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
gtk_widget_unmap (widget);
if (window->modal)
gtk_grab_remove (widget);
}
static void
gtk_window_map (GtkWidget *widget)
{
GtkWindow *window;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WINDOW (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
window = GTK_WINDOW (widget);
if (window->bin.child &&
GTK_WIDGET_VISIBLE (window->bin.child) &&
!GTK_WIDGET_MAPPED (window->bin.child))
gtk_widget_map (window->bin.child);
gdk_window_show (widget->window);
}
static void
gtk_window_unmap (GtkWidget *widget)
{
GtkWindow *window;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WINDOW (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
gdk_window_withdraw (widget->window);
window = GTK_WINDOW (widget);
window->use_uposition = TRUE;
window->resize_count = 0;
window->handling_resize = FALSE;
}
static void
gtk_window_realize (GtkWidget *widget)
{
GtkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (GTK_IS_WINDOW (widget));
window = GTK_WINDOW (widget);
/* ensure widget tree is properly size allocated */
if (widget->allocation.x == -1 &&
widget->allocation.y == -1 &&
widget->allocation.width == 1 &&
widget->allocation.height == 1)
{
GtkRequisition requisition;
GtkAllocation allocation = { 0, 0, 200, 200 };
gtk_widget_size_request (widget, &requisition);
if (requisition.width || requisition.height)
{
/* non-empty window */
allocation.width = requisition.width;
allocation.height = requisition.height;
}
gtk_widget_size_allocate (widget, &allocation);
gtk_container_queue_resize (GTK_CONTAINER (widget));
g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
}
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
switch (window->type)
{
case GTK_WINDOW_TOPLEVEL:
attributes.window_type = GDK_WINDOW_TOPLEVEL;
break;
case GTK_WINDOW_DIALOG:
attributes.window_type = GDK_WINDOW_DIALOG;
break;
case GTK_WINDOW_POPUP:
attributes.window_type = GDK_WINDOW_TEMP;
break;
}
attributes.title = window->title;
attributes.wmclass_name = window->wmclass_name;
attributes.wmclass_class = window->wmclass_class;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_KEY_PRESS_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_FOCUS_CHANGE_MASK |
GDK_STRUCTURE_MASK);
attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
widget->window = gdk_window_new (NULL, &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, window);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
gtk_window_paint (widget, NULL);
if (window->transient_parent &&
GTK_WIDGET_REALIZED (window->transient_parent))
gdk_window_set_transient_for (widget->window,
GTK_WIDGET (window->transient_parent)->window);
}
static void
gtk_window_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkWindow *window;
GtkBin *bin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WINDOW (widget));
g_return_if_fail (requisition != NULL);
window = GTK_WINDOW (widget);
bin = GTK_BIN (window);
requisition->width = GTK_CONTAINER (window)->border_width * 2;
requisition->height = GTK_CONTAINER (window)->border_width * 2;
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GtkRequisition child_requisition;
gtk_widget_size_request (bin->child, &child_requisition);
requisition->width += child_requisition.width;
requisition->height += child_requisition.height;
}
}
static void
gtk_window_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkWindow *window;
GtkAllocation child_allocation;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WINDOW (widget));
g_return_if_fail (allocation != NULL);
window = GTK_WINDOW (widget);
widget->allocation = *allocation;
if (window->bin.child && GTK_WIDGET_VISIBLE (window->bin.child))
{
child_allocation.x = GTK_CONTAINER (window)->border_width;
child_allocation.y = GTK_CONTAINER (window)->border_width;
child_allocation.width =
MAX (1, (gint)allocation->width - child_allocation.x * 2);
child_allocation.height =
MAX (1, (gint)allocation->height - child_allocation.y * 2);
gtk_widget_size_allocate (window->bin.child, &child_allocation);
}
}
static gint
gtk_window_configure_event (GtkWidget *widget,
GdkEventConfigure *event)
{
GtkWindow *window;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
window = GTK_WINDOW (widget);
/* we got a configure event specifying the new window size and position,
* in principle we have to distinguish 4 cases here:
* 1) the size didn't change and resize_count == 0
* -> the window was merely moved (sometimes not even that)
* 2) the size didn't change and resize_count > 0
* -> we requested a new size, but didn't get it
* 3) the size changed and resize_count > 0
* -> we asked for a new size and we got one
* 4) the size changed and resize_count == 0
* -> we got resized from outside the toolkit, and have to
* accept that size since we don't want to fight neither the
* window manager nor the user
* in the three latter cases we have to reallocate the widget tree,
* which happens in gtk_window_move_resize(), so we set a flag for
* that function and assign the new size. if resize_count > 1,
* we simply do nothing and wait for more configure events.
*/
if (window->resize_count > 0 ||
widget->allocation.width != event->width ||
widget->allocation.height != event->height)
{
if (window->resize_count > 0)
window->resize_count -= 1;
if (window->resize_count == 0)
{
window->handling_resize = TRUE;
widget->allocation.width = event->width;
widget->allocation.height = event->height;
gtk_widget_queue_resize (widget);
}
}
return TRUE;
}
static gint
gtk_window_key_press_event (GtkWidget *widget,
GdkEventKey *event)
{
GtkWindow *window;
GtkDirectionType direction = 0;
gboolean handled;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
window = GTK_WINDOW (widget);
handled = FALSE;
if (window->focus_widget &&
window->focus_widget != widget &&
GTK_WIDGET_IS_SENSITIVE (window->focus_widget))
{
handled = gtk_widget_event (window->focus_widget, (GdkEvent*) event);
}
if (!handled)
handled = gtk_accel_groups_activate (GTK_OBJECT (window), event->keyval, event->state);
if (!handled)
{
switch (event->keyval)
{
case GDK_space:
if (window->focus_widget)
{
if (GTK_WIDGET_IS_SENSITIVE (window->focus_widget))
gtk_widget_activate (window->focus_widget);
handled = TRUE;
}
break;
case GDK_Return:
case GDK_KP_Enter:
if (window->default_widget && GTK_WIDGET_IS_SENSITIVE (window->default_widget) &&
(!window->focus_widget || !GTK_WIDGET_RECEIVES_DEFAULT (window->focus_widget)))
{
gtk_widget_activate (window->default_widget);
handled = TRUE;
}
else if (window->focus_widget)
{
if (GTK_WIDGET_IS_SENSITIVE (window->focus_widget))
gtk_widget_activate (window->focus_widget);
handled = TRUE;
}
break;
case GDK_Up:
case GDK_Down:
case GDK_Left:
case GDK_Right:
case GDK_KP_Up:
case GDK_KP_Down:
case GDK_KP_Left:
case GDK_KP_Right:
case GDK_Tab:
case GDK_ISO_Left_Tab:
switch (event->keyval)
{
case GDK_Up:
case GDK_KP_Up:
direction = GTK_DIR_UP;
break;
case GDK_Down:
case GDK_KP_Down:
direction = GTK_DIR_DOWN;
break;
case GDK_Left:
case GDK_KP_Left:
direction = GTK_DIR_LEFT;
break;
case GDK_Right:
case GDK_KP_Right:
direction = GTK_DIR_RIGHT;
break;
case GDK_Tab:
case GDK_ISO_Left_Tab:
if (event->state & GDK_SHIFT_MASK)
direction = GTK_DIR_TAB_BACKWARD;
else
direction = GTK_DIR_TAB_FORWARD;
break;
default :
direction = GTK_DIR_UP; /* never reached, but makes compiler happy */
}
gtk_container_focus (GTK_CONTAINER (widget), direction);
if (!GTK_CONTAINER (window)->focus_child)
gtk_window_set_focus (GTK_WINDOW (widget), NULL);
else
handled = TRUE;
break;
}
}
if (!handled && GTK_WIDGET_CLASS (parent_class)->key_press_event)
handled = GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
return handled;
}
static gint
gtk_window_key_release_event (GtkWidget *widget,
GdkEventKey *event)
{
GtkWindow *window;
gint handled;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
window = GTK_WINDOW (widget);
handled = FALSE;
if (window->focus_widget &&
window->focus_widget != widget &&
GTK_WIDGET_SENSITIVE (window->focus_widget))
{
handled = gtk_widget_event (window->focus_widget, (GdkEvent*) event);
}
if (!handled && GTK_WIDGET_CLASS (parent_class)->key_release_event)
handled = GTK_WIDGET_CLASS (parent_class)->key_release_event (widget, event);
return handled;
}
static gint
gtk_window_enter_notify_event (GtkWidget *widget,
GdkEventCrossing *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
return FALSE;
}
static gint
gtk_window_leave_notify_event (GtkWidget *widget,
GdkEventCrossing *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
return FALSE;
}
static gint
gtk_window_focus_in_event (GtkWidget *widget,
GdkEventFocus *event)
{
GtkWindow *window;
GdkEventFocus fevent;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
/* It appears spurious focus in events can occur when
* the window is hidden. So we'll just check to see if
* the window is visible before actually handling the
* event
*/
if (GTK_WIDGET_VISIBLE (widget))
{
window = GTK_WINDOW (widget);
if (window->focus_widget &&
window->focus_widget != widget &&
!GTK_WIDGET_HAS_FOCUS (window->focus_widget))
{
fevent.type = GDK_FOCUS_CHANGE;
fevent.window = window->focus_widget->window;
fevent.in = TRUE;
gtk_widget_event (window->focus_widget, (GdkEvent*) &fevent);
}
}
return FALSE;
}
static gint
gtk_window_focus_out_event (GtkWidget *widget,
GdkEventFocus *event)
{
GtkWindow *window;
GdkEventFocus fevent;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
window = GTK_WINDOW (widget);
if (window->focus_widget &&
window->focus_widget != widget &&
GTK_WIDGET_HAS_FOCUS (window->focus_widget))
{
fevent.type = GDK_FOCUS_CHANGE;
fevent.window = window->focus_widget->window;
fevent.in = FALSE;
gtk_widget_event (window->focus_widget, (GdkEvent*) &fevent);
}
return FALSE;
}
static GdkAtom atom_rcfiles = GDK_NONE;
static void
gtk_window_read_rcfiles (GtkWidget *widget,
GdkEventClient *event)
{
GList *embedded_windows;
embedded_windows = gtk_object_get_data (GTK_OBJECT (widget), "gtk-embedded");
if (embedded_windows)
{
GdkEventClient sev;
int i;
for(i = 0; i < 5; i++)
sev.data.l[i] = 0;
sev.data_format = 32;
sev.message_type = atom_rcfiles;
while (embedded_windows)
{
guint xid = GPOINTER_TO_UINT (embedded_windows->data);
gdk_event_send_client_message ((GdkEvent *) &sev, xid);
embedded_windows = embedded_windows->next;
}
}
if (gtk_rc_reparse_all ())
{
/* If the above returned true, some of our RC files are out
* of date, so we need to reset all our widgets. Our other
* toplevel windows will also get the message, but by
* then, the RC file will up to date, so we have to tell
* them now.
*/
GList *list, *toplevels = gtk_window_list_toplevels ();
for (list = toplevels; list; list = list->next)
{
gtk_widget_reset_rc_styles (list->data);
gtk_widget_unref (list->data);
}
g_list_free (toplevels);
}
}
static gint
gtk_window_client_event (GtkWidget *widget,
GdkEventClient *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (!atom_rcfiles)
atom_rcfiles = gdk_atom_intern("_GTK_READ_RCFILES", FALSE);
if(event->message_type == atom_rcfiles)
gtk_window_read_rcfiles (widget, event);
return FALSE;
}
static void
gtk_window_check_resize (GtkContainer *container)
{
GtkWindow *window;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_WINDOW (container));
window = GTK_WINDOW (container);
if (GTK_WIDGET_VISIBLE (container))
gtk_window_move_resize (window);
}
static void
gtk_window_real_set_focus (GtkWindow *window,
GtkWidget *focus)
{
GdkEventFocus event;
gboolean def_flags = 0;
g_return_if_fail (window != NULL);
g_return_if_fail (GTK_IS_WINDOW (window));
if (window->default_widget)
def_flags = GTK_WIDGET_HAS_DEFAULT (window->default_widget);
if (window->focus_widget)
{
event.type = GDK_FOCUS_CHANGE;
event.window = window->focus_widget->window;
event.in = FALSE;
if (GTK_WIDGET_RECEIVES_DEFAULT (window->focus_widget) &&
(window->focus_widget != window->default_widget))
{
GTK_WIDGET_UNSET_FLAGS (window->focus_widget, GTK_HAS_DEFAULT);
/* if any widget had the default set there should be
a default_widget, but might not so this is a sanity
check */
if (window->default_widget)
GTK_WIDGET_SET_FLAGS (window->default_widget, GTK_HAS_DEFAULT);
}
gtk_widget_event (window->focus_widget, (GdkEvent*) &event);
}
window->focus_widget = focus;
if (window->focus_widget)
{
event.type = GDK_FOCUS_CHANGE;
event.window = window->focus_widget->window;
event.in = TRUE;
if (window->default_widget)
{
if (GTK_WIDGET_RECEIVES_DEFAULT (window->focus_widget) &&
(window->focus_widget != window->default_widget))
{
if (GTK_WIDGET_CAN_DEFAULT (window->focus_widget))
GTK_WIDGET_SET_FLAGS (window->focus_widget, GTK_HAS_DEFAULT);
GTK_WIDGET_UNSET_FLAGS (window->default_widget, GTK_HAS_DEFAULT);
}
else
{
GTK_WIDGET_SET_FLAGS (window->default_widget, GTK_HAS_DEFAULT);
}
}
gtk_widget_event (window->focus_widget, (GdkEvent*) &event);
}
else if (window->default_widget)
{
GTK_WIDGET_SET_FLAGS (window->default_widget, GTK_HAS_DEFAULT);
}
if (window->default_widget &&
(def_flags != GTK_WIDGET_FLAGS (window->default_widget)))
gtk_widget_queue_draw (window->default_widget);
}
/*********************************
* Functions related to resizing *
*********************************/
static void
gtk_window_move_resize (GtkWindow *window)
{
GtkWidget *widget;
GtkContainer *container;
GtkWindowGeometryInfo *info;
GtkWindowLastGeometryInfo saved_last_info;
GdkGeometry new_geometry;
guint new_flags;
gint x, y;
gint width, height;
gint new_width, new_height;
gboolean default_size_changed = FALSE;
gboolean hints_changed = FALSE;
g_return_if_fail (GTK_IS_WINDOW (window));
g_return_if_fail (GTK_WIDGET_REALIZED (window));
widget = GTK_WIDGET (window);
container = GTK_CONTAINER (widget);
info = gtk_window_get_geometry_info (window, TRUE);
saved_last_info = info->last;
gtk_widget_size_request (widget, NULL);
gtk_window_compute_default_size (window, &new_width, &new_height);
if (info->last.width < 0 ||
info->last.width != new_width ||
info->last.height != new_height)
{
default_size_changed = TRUE;
info->last.width = new_width;
info->last.height = new_height;
/* We need to force a reposition in this case
*/
if (window->position == GTK_WIN_POS_CENTER_ALWAYS)
window->use_uposition = TRUE;
}
/* Compute new set of hints for the window
*/
gtk_window_compute_hints (window, &new_geometry, &new_flags);
if (!gtk_window_compare_hints (&info->last.geometry, info->last.flags,
&new_geometry, new_flags))
{
hints_changed = TRUE;
info->last.geometry = new_geometry;
info->last.flags = new_flags;
}
/* From the default size and the allocation, figure out the size
* the window should be.
*/
if (!default_size_changed ||
(!window->auto_shrink &&
new_width <= widget->allocation.width &&
new_height <= widget->allocation.height))
{
new_width = widget->allocation.width;
new_height = widget->allocation.height;
}
/* constrain the window size to the specified geometry */
gtk_window_constrain_size (window,
&new_geometry, new_flags,
new_width, new_height,
&new_width, &new_height);
/* compute new window position if a move is required
*/
gtk_window_compute_reposition (window, new_width, new_height, &x, &y);
if (x != 1 && y != -1 && !(new_flags & GDK_HINT_POS))
{
new_flags |= GDK_HINT_POS;
hints_changed = TRUE;
}
/* handle actual resizing:
* - handle reallocations due to configure events
* - figure whether we need to request a new window size
* - handle simple resizes within our widget tree
* - reposition window if neccessary
*/
width = widget->allocation.width;
height = widget->allocation.height;
if (window->handling_resize)
{
GtkAllocation allocation;
/* if we are just responding to a configure event, which
* might be due to a resize by the window manager, the
* user, or a response to a resizing request we made
* earlier, we go ahead, allocate the new size and we're done
* (see gtk_window_configure_event() for more details).
*/
window->handling_resize = FALSE;
allocation = widget->allocation;
gtk_widget_size_allocate (widget, &allocation);
gtk_widget_queue_draw (widget);
#ifdef FIXME_ZVT_ME_HARDER
if ((default_size_changed || hints_changed) && (width != new_width || height != new_height))
{
/* We could be here for two reasons
* 1) We coincidentally got a resize while handling
* another resize.
* 2) Our computation of default_size_changed was completely
* screwed up, probably because one of our children
* is broken (i.e. changes requisition during
* size allocation). It's probably a zvt widget.
*
* For 1), we could just go ahead and ask for the
* new size right now, but doing that for 2)
* might well be fighting the user (and can even
* trigger a loop). Since we really don't want to
* do that, we requeue a resize in hopes that
* by the time it gets handled, the child has seen
* the light and is willing to go along with the
* new size. (this happens for the zvt widget, since
* the size_allocate() above will have stored the
* requisition corresponding to the new size in the
* zvt widget)
*
* This doesn't buy us anything for 1), but it shouldn't
* hurt us too badly, since it is what would have
* happened if we had gotten the configure event before
* the new size had been set.
*/
if (x != -1 && y != -1)
gdk_window_move (widget->window, x, y);
/* we have to preserve the values and flags that are used
* for computation of default_size_changed and hints_changed
*/
info->last = saved_last_info;
gtk_widget_queue_resize (widget);
return;
}
#endif /* FIXME_ZVT_ME_HARDER */
}
/* Now set hints if necessary
*/
if (hints_changed)
gdk_window_set_geometry_hints (widget->window,
&new_geometry,
new_flags);
if ((default_size_changed || hints_changed) &&
(width != new_width || height != new_height))
{
/* given that (width != new_width || height != new_height), we are in one
* of the following situations:
*
* default_size_changed
* our requisition has changed and we need a different window size,
* so we request it from the window manager.
*
* !default_size_changed
* the window manager wouldn't assign us the size we requested, in this
* case we don't try to request a new size with every resize.
*
* !default_size_changed && hints_changed
* the window manager rejects our size, but we have just changed the
* window manager hints, so there's a certain chance our request will
* be honoured this time, so we try again.
*/
/* request a new window size */
if (x != -1 && y != -1)
gdk_window_move_resize (GTK_WIDGET (window)->window, x, y, new_width, new_height);
else
gdk_window_resize (GTK_WIDGET (window)->window, new_width, new_height);
window->resize_count += 1;
/* we are now awaiting the new configure event in response to our
* resizing request. the configure event will cause a new resize
* with ->handling_resize=TRUE.
* until then, we want to
* - discard expose events
* - coalesce resizes for our children
* - defer any window resizes until the configure event arrived
* to achive this, we queue a resize for the window, but remove its
* resizing handler, so resizing will not be handled from the next
* idle handler but when the configure event arrives.
*
* FIXME: we should also dequeue the pending redraws here, since
* we handle those ourselves in ->handling_resize==TRUE.
*/
gtk_widget_queue_resize (GTK_WIDGET (container));
if (container->resize_mode == GTK_RESIZE_QUEUE)
gtk_container_dequeue_resize_handler (container);
}
else
{
if (x != -1 && y != -1)
gdk_window_move (widget->window, x, y);
if (container->resize_widgets)
gtk_container_resize_children (GTK_CONTAINER (window));
}
}
/* Compare two sets of Geometry hints for equality.
*/
static gboolean
gtk_window_compare_hints (GdkGeometry *geometry_a,
guint flags_a,
GdkGeometry *geometry_b,
guint flags_b)
{
if (flags_a != flags_b)
return FALSE;
if ((flags_a & GDK_HINT_MIN_SIZE) &&
(geometry_a->min_width != geometry_b->min_width ||
geometry_a->min_height != geometry_b->min_height))
return FALSE;
if ((flags_a & GDK_HINT_MAX_SIZE) &&
(geometry_a->max_width != geometry_b->max_width ||
geometry_a->max_height != geometry_b->max_height))
return FALSE;
if ((flags_a & GDK_HINT_BASE_SIZE) &&
(geometry_a->base_width != geometry_b->base_width ||
geometry_a->base_height != geometry_b->base_height))
return FALSE;
if ((flags_a & GDK_HINT_ASPECT) &&
(geometry_a->min_aspect != geometry_b->min_aspect ||
geometry_a->max_aspect != geometry_b->max_aspect))
return FALSE;
if ((flags_a & GDK_HINT_RESIZE_INC) &&
(geometry_a->width_inc != geometry_b->width_inc ||
geometry_a->height_inc != geometry_b->height_inc))
return FALSE;
return TRUE;
}
/* Compute the default_size for a window. The result will
* be stored in *width and *height. The default size is
* the size the window should have when initially mapped.
* This routine does not attempt to constrain the size
* to obey the geometry hints - that must be done elsewhere.
*/
static void
gtk_window_compute_default_size (GtkWindow *window,
guint *width,
guint *height)
{
GtkRequisition requisition;
GtkWindowGeometryInfo *info;
gtk_widget_get_child_requisition (GTK_WIDGET (window), &requisition);
*width = requisition.width;
*height = requisition.height;
info = gtk_window_get_geometry_info (window, FALSE);
if (*width == 0 && *height == 0)
{
/* empty window */
*width = 200;
*height = 200;
}
if (info)
{
*width = info->width > 0 ? info->width : *width;
*height = info->height > 0 ? info->height : *height;
}
}
/* Constrain a window size to obey the hints passed in geometry
* and flags. The result will be stored in *new_width and *new_height
*
* This routine is partially borrowed from fvwm.
*
* Copyright 1993, Robert Nation
* You may use this code for any purpose, as long as the original
* copyright remains in the source code and all documentation
*
* which in turn borrows parts of the algorithm from uwm
*/
static void
gtk_window_constrain_size (GtkWindow *window,
GdkGeometry *geometry,
guint flags,
gint width,
gint height,
gint *new_width,
gint *new_height)
{
gint min_width = 0;
gint min_height = 0;
gint base_width = 0;
gint base_height = 0;
gint xinc = 1;
gint yinc = 1;
gint max_width = G_MAXINT;
gint max_height = G_MAXINT;
#define FLOOR(value, base) ( ((gint) ((value) / (base))) * (base) )
if ((flags & GDK_HINT_BASE_SIZE) && (flags & GDK_HINT_MIN_SIZE))
{
base_width = geometry->base_width;
base_height = geometry->base_height;
min_width = geometry->min_width;
min_height = geometry->min_height;
}
else if (flags & GDK_HINT_BASE_SIZE)
{
base_width = geometry->base_width;
base_height = geometry->base_height;
min_width = geometry->base_width;
min_height = geometry->base_height;
}
else if (flags & GDK_HINT_MIN_SIZE)
{
base_width = geometry->min_width;
base_height = geometry->min_height;
min_width = geometry->min_width;
min_height = geometry->min_height;
}
if (flags & GDK_HINT_MAX_SIZE)
{
max_width = geometry->max_width ;
max_height = geometry->max_height;
}
if (flags & GDK_HINT_RESIZE_INC)
{
xinc = MAX (xinc, geometry->width_inc);
yinc = MAX (yinc, geometry->height_inc);
}
/* clamp width and height to min and max values
*/
width = CLAMP (width, min_width, max_width);
height = CLAMP (height, min_height, max_height);
/* shrink to base + N * inc
*/
width = base_width + FLOOR (width - base_width, xinc);
height = base_height + FLOOR (height - base_height, yinc);
/* constrain aspect ratio, according to:
*
* width
* min_aspect <= -------- <= max_aspect
* height
*/
if (flags & GDK_HINT_ASPECT &&
geometry->min_aspect > 0 &&
geometry->max_aspect > 0)
{
gint delta;
if (geometry->min_aspect * height > width)
{
delta = FLOOR (height - width * geometry->min_aspect, yinc);
if (height - delta >= min_height)
height -= delta;
else
{
delta = FLOOR (height * geometry->min_aspect - width, xinc);
if (width + delta <= max_width)
width += delta;
}
}
if (geometry->max_aspect * height < width)
{
delta = FLOOR (width - height * geometry->max_aspect, xinc);
if (width - delta >= min_width)
width -= delta;
else
{
delta = FLOOR (width / geometry->max_aspect - height, yinc);
if (height + delta <= max_height)
height += delta;
}
}
}
#undef FLOOR
*new_width = width;
*new_height = height;
}
/* Compute the set of geometry hints and flags for a window
* based on the application set geometry, and requisiition
* of the window. gtk_widget_size_request() must have been
* called first.
*/
static void
gtk_window_compute_hints (GtkWindow *window,
GdkGeometry *new_geometry,
guint *new_flags)
{
GtkWidget *widget;
GtkWidgetAuxInfo *aux_info;
gint ux, uy;
gint extra_width = 0;
gint extra_height = 0;
GtkWindowGeometryInfo *geometry_info;
GtkRequisition requisition;
g_return_if_fail (GTK_IS_WINDOW (window));
widget = GTK_WIDGET (window);
gtk_widget_get_child_requisition (widget, &requisition);
geometry_info = gtk_window_get_geometry_info (GTK_WINDOW (widget), FALSE);
g_return_if_fail (geometry_info != NULL);
*new_flags = geometry_info->mask;
*new_geometry = geometry_info->geometry;
if (geometry_info->widget)
{
extra_width = widget->requisition.width - geometry_info->widget->requisition.width;
extra_height = widget->requisition.height - geometry_info->widget->requisition.height;
}
ux = 0;
uy = 0;
aux_info = gtk_object_get_data (GTK_OBJECT (widget), "gtk-aux-info");
if (aux_info && (aux_info->x != -1) && (aux_info->y != -1))
{
ux = aux_info->x;
uy = aux_info->y;
*new_flags |= GDK_HINT_POS;
}
if (*new_flags & GDK_HINT_BASE_SIZE)
{
new_geometry->base_width += extra_width;
new_geometry->base_height += extra_height;
}
else if (!(*new_flags & GDK_HINT_MIN_SIZE) &&
(*new_flags & GDK_HINT_RESIZE_INC) &&
((extra_width != 0) || (extra_height != 0)))
{
*new_flags |= GDK_HINT_BASE_SIZE;
new_geometry->base_width = extra_width;
new_geometry->base_height = extra_height;
}
if (*new_flags & GDK_HINT_MIN_SIZE)
{
new_geometry->min_width += extra_width;
new_geometry->min_height += extra_height;
}
else if (!window->allow_shrink)
{
*new_flags |= GDK_HINT_MIN_SIZE;
new_geometry->min_width = requisition.width;
new_geometry->min_height = requisition.height;
}
if (*new_flags & GDK_HINT_MAX_SIZE)
{
new_geometry->max_width += extra_width;
new_geometry->max_height += extra_height;
}
else if (!window->allow_grow)
{
*new_flags |= GDK_HINT_MAX_SIZE;
new_geometry->max_width = requisition.width;
new_geometry->max_height = requisition.height;
}
}
/* Compute a new position for the window based on a new
* size. *x and *y will be set to the new coordinates, or to -1 if the
* window does not need to be moved
*/
static void
gtk_window_compute_reposition (GtkWindow *window,
gint new_width,
gint new_height,
gint *x,
gint *y)
{
GtkWidget *widget;
widget = GTK_WIDGET (window);
*x = -1;
*y = -1;
switch (window->position)
{
case GTK_WIN_POS_CENTER:
case GTK_WIN_POS_CENTER_ALWAYS:
if (window->use_uposition)
{
gint screen_width = gdk_screen_width ();
gint screen_height = gdk_screen_height ();
*x = (screen_width - new_width) / 2;
*y = (screen_height - new_height) / 2;
}
break;
case GTK_WIN_POS_MOUSE:
if (window->use_uposition)
{
gint screen_width = gdk_screen_width ();
gint screen_height = gdk_screen_height ();
gdk_window_get_pointer (NULL, x, y, NULL);
*x -= new_width / 2;
*y -= new_height / 2;
*x = CLAMP (*x, 0, screen_width - new_width);
*y = CLAMP (*y, 0, screen_height - new_height);
}
break;
default:
if (window->use_uposition)
{
GtkWidgetAuxInfo *aux_info;
aux_info = gtk_object_get_data (GTK_OBJECT (window), "gtk-aux-info");
if (aux_info &&
aux_info->x != -1 && aux_info->y != -1 &&
aux_info->x != -2 && aux_info->y != -2)
{
*x = aux_info->x;
*y = aux_info->y;
}
}
break;
}
if (*x != -1 && *y != -1)
{
GtkWidgetAuxInfo *aux_info;
/* we handle necessary window positioning by hand here,
* so we can coalesce the window movement with possible
* resizes to get only one configure event.
* keep this in sync with gtk_widget_set_uposition()
* and gtk_window_reposition().
*/
gtk_widget_set_uposition (widget, -1, -1); /* ensure we have aux_info */
aux_info = gtk_object_get_data (GTK_OBJECT (widget), "gtk-aux-info");
aux_info->x = *x;
aux_info->y = *y;
window->use_uposition = FALSE;
}
}
/***********************
* Redrawing functions *
***********************/
static void
gtk_window_paint (GtkWidget *widget,
GdkRectangle *area)
{
gtk_paint_flat_box (widget->style, widget->window, GTK_STATE_NORMAL,
GTK_SHADOW_NONE, area, widget, "base", 0, 0, -1, -1);
}
static gint
gtk_window_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WINDOW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (!GTK_WIDGET_APP_PAINTABLE (widget))
gtk_window_paint (widget, &event->area);
if (GTK_WIDGET_CLASS (parent_class)->expose_event)
return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
return TRUE;
}
static void
gtk_window_draw (GtkWidget *widget,
GdkRectangle *area)
{
if (!GTK_WIDGET_APP_PAINTABLE (widget))
gtk_window_paint (widget, area);
if (GTK_WIDGET_CLASS (parent_class)->draw)
(* GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
}
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