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mutter/src/ui/ui.c
Owen W. Taylor 85425f64a5 Stop confusing GDK's grab tracking 
With client side windows, mixing GDK event delivery with explicit calls
to XUngrabPointer() can result in GDK losing button release events
it expects to get. This means that GDK thinks there is an implicit
grab in effect when there is none and send events to the wrong window.

Avoid this by bypassing GDK's event handling for most mouse events.
We do a simplified conversion of the X event into a GdkEvent and send
it to directly to libgtk for delivery.

We make an exception when a GDK grab is already in effect - this is
needed for the correct operation of menus.

http://bugzilla.gnome.org/show_bug.cgi?id=599181
2010-10-28 15:48:54 -04:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Mutter interface for talking to GTK+ UI module */
/*
* Copyright (C) 2002 Havoc Pennington
* stock icon code Copyright (C) 2002 Jorn Baayen <jorn@nl.linux.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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include "prefs.h"
#include "ui.h"
#include "frames.h"
#include "util.h"
#include "menu.h"
#include "core.h"
#include "theme-private.h"
#include "inlinepixbufs.h"
#include <string.h>
#include <stdlib.h>
#include <cairo-xlib.h>
static void meta_stock_icons_init (void);
static void meta_ui_accelerator_parse (const char *accel,
guint *keysym,
guint *keycode,
GdkModifierType *keymask);
struct _MetaUI
{
Display *xdisplay;
Screen *xscreen;
MetaFrames *frames;
/* For double-click tracking */
guint button_click_number;
Window button_click_window;
int button_click_x;
int button_click_y;
guint32 button_click_time;
};
void
meta_ui_init (int *argc, char ***argv)
{
if (!gtk_init_check (argc, argv))
meta_fatal ("Unable to open X display %s\n", XDisplayName (NULL));
meta_stock_icons_init ();
}
Display*
meta_ui_get_display (void)
{
return GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
}
/* We do some of our event handling in frames.c, which expects
* GDK events delivered by GTK+. However, since the transition to
* client side windows, we can't let GDK see button events, since the
* client-side tracking of implicit and explicit grabs it does will
* get confused by our direct use of X grabs in the core code.
*
* So we do a very minimal GDK => GTK event conversion here and send on the
* events we care about, and then filter them out so they don't go
* through the normal GDK event handling.
*
* To reduce the amount of code, the only events fields filled out
* below are the ones that frames.c uses. If frames.c is modified to
* use more fields, more fields need to be filled out below.
*/
static gboolean
maybe_redirect_mouse_event (XEvent *xevent)
{
GdkDisplay *gdisplay;
MetaUI *ui;
GdkEvent gevent;
GdkWindow *gdk_window;
Window window;
switch (xevent->type)
{
case ButtonPress:
case ButtonRelease:
window = xevent->xbutton.window;
break;
case MotionNotify:
window = xevent->xmotion.window;
break;
case EnterNotify:
case LeaveNotify:
window = xevent->xcrossing.window;
break;
default:
return FALSE;
}
gdisplay = gdk_x11_lookup_xdisplay (xevent->xany.display);
ui = g_object_get_data (G_OBJECT (gdisplay), "meta-ui");
if (!ui)
return FALSE;
gdk_window = gdk_window_lookup_for_display (gdisplay, window);
if (gdk_window == NULL)
return FALSE;
/* If GDK already thinks it has a grab, we better let it see events; this
* is the menu-navigation case and events need to get sent to the appropriate
* (client-side) subwindow for individual menu items.
*/
if (gdk_display_pointer_is_grabbed (gdisplay))
return FALSE;
memset (&gevent, 0, sizeof (gevent));
switch (xevent->type)
{
case ButtonPress:
case ButtonRelease:
if (xevent->type == ButtonPress)
{
GtkSettings *settings = gtk_settings_get_default ();
int double_click_time;
int double_click_distance;
g_object_get (settings,
"gtk-double-click-time", &double_click_time,
"gtk-double-click-distance", &double_click_distance,
NULL);
if (xevent->xbutton.button == ui->button_click_number &&
xevent->xbutton.window == ui->button_click_window &&
xevent->xbutton.time < ui->button_click_time + double_click_time &&
ABS (xevent->xbutton.x - ui->button_click_x) <= double_click_distance &&
ABS (xevent->xbutton.y - ui->button_click_y) <= double_click_distance)
{
gevent.button.type = GDK_2BUTTON_PRESS;
ui->button_click_number = 0;
}
else
{
gevent.button.type = GDK_BUTTON_PRESS;
ui->button_click_number = xevent->xbutton.button;
ui->button_click_window = xevent->xbutton.window;
ui->button_click_time = xevent->xbutton.time;
ui->button_click_x = xevent->xbutton.x;
ui->button_click_y = xevent->xbutton.y;
}
}
else
{
gevent.button.type = GDK_BUTTON_RELEASE;
}
gevent.button.window = gdk_window;
gevent.button.button = xevent->xbutton.button;
gevent.button.time = xevent->xbutton.time;
gevent.button.x = xevent->xbutton.x;
gevent.button.y = xevent->xbutton.y;
gevent.button.x_root = xevent->xbutton.x_root;
gevent.button.y_root = xevent->xbutton.y_root;
break;
case MotionNotify:
gevent.motion.type = GDK_MOTION_NOTIFY;
gevent.motion.window = gdk_window;
break;
case EnterNotify:
case LeaveNotify:
gevent.crossing.type = xevent->type == EnterNotify ? GDK_ENTER_NOTIFY : GDK_LEAVE_NOTIFY;
gevent.crossing.window = gdk_window;
gevent.crossing.x = xevent->xcrossing.x;
gevent.crossing.y = xevent->xcrossing.y;
break;
default:
g_assert_not_reached ();
break;
}
/* If we've gotten here, we've filled in the gdk_event and should send it on */
gtk_main_do_event (&gevent);
return TRUE;
}
typedef struct _EventFunc EventFunc;
struct _EventFunc
{
MetaEventFunc func;
gpointer data;
};
static EventFunc *ef = NULL;
static GdkFilterReturn
filter_func (GdkXEvent *xevent,
GdkEvent *event,
gpointer data)
{
g_return_val_if_fail (ef != NULL, GDK_FILTER_CONTINUE);
if ((* ef->func) (xevent, ef->data) ||
maybe_redirect_mouse_event (xevent))
return GDK_FILTER_REMOVE;
else
return GDK_FILTER_CONTINUE;
}
void
meta_ui_add_event_func (Display *xdisplay,
MetaEventFunc func,
gpointer data)
{
g_return_if_fail (ef == NULL);
ef = g_new (EventFunc, 1);
ef->func = func;
ef->data = data;
gdk_window_add_filter (NULL, filter_func, ef);
}
/* removal is by data due to proxy function */
void
meta_ui_remove_event_func (Display *xdisplay,
MetaEventFunc func,
gpointer data)
{
g_return_if_fail (ef != NULL);
gdk_window_remove_filter (NULL, filter_func, ef);
g_free (ef);
ef = NULL;
}
MetaUI*
meta_ui_new (Display *xdisplay,
Screen *screen)
{
GdkDisplay *gdisplay;
MetaUI *ui;
ui = g_new0 (MetaUI, 1);
ui->xdisplay = xdisplay;
ui->xscreen = screen;
gdisplay = gdk_x11_lookup_xdisplay (xdisplay);
g_assert (gdisplay == gdk_display_get_default ());
ui->frames = meta_frames_new (XScreenNumberOfScreen (screen));
/* This does not actually show any widget. MetaFrames has been hacked so
* that showing it doesn't actually do anything. But we need the flags
* set for GTK to deliver events properly. */
gtk_widget_show (GTK_WIDGET (ui->frames));
g_object_set_data (G_OBJECT (gdisplay), "meta-ui", ui);
return ui;
}
void
meta_ui_free (MetaUI *ui)
{
GdkDisplay *gdisplay;
gtk_widget_destroy (GTK_WIDGET (ui->frames));
gdisplay = gdk_x11_lookup_xdisplay (ui->xdisplay);
g_object_set_data (G_OBJECT (gdisplay), "meta-ui", NULL);
g_free (ui);
}
void
meta_ui_get_frame_geometry (MetaUI *ui,
Window frame_xwindow,
int *top_height, int *bottom_height,
int *left_width, int *right_width)
{
meta_frames_get_geometry (ui->frames, frame_xwindow,
top_height, bottom_height,
left_width, right_width);
}
Window
meta_ui_create_frame_window (MetaUI *ui,
Display *xdisplay,
Visual *xvisual,
gint x,
gint y,
gint width,
gint height,
gint screen_no,
gulong *create_serial)
{
GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
GdkScreen *screen = gdk_display_get_screen (display, screen_no);
GdkWindowAttr attrs;
gint attributes_mask;
GdkWindow *window;
GdkVisual *visual;
/* Default depth/visual handles clients with weird visuals; they can
* always be children of the root depth/visual obviously, but
* e.g. DRI games can't be children of a parent that has the same
* visual as the client.
*/
if (!xvisual)
visual = gdk_screen_get_system_visual (screen);
else
{
visual = gdk_x11_screen_lookup_visual (screen,
XVisualIDFromVisual (xvisual));
}
attrs.title = NULL;
/* frame.c is going to replace the event mask immediately, but
* we still have to set it here to let GDK know what it is.
*/
attrs.event_mask =
GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_FOCUS_CHANGE_MASK;
attrs.x = x;
attrs.y = y;
attrs.wclass = GDK_INPUT_OUTPUT;
attrs.visual = visual;
attrs.window_type = GDK_WINDOW_CHILD;
attrs.cursor = NULL;
attrs.wmclass_name = NULL;
attrs.wmclass_class = NULL;
attrs.override_redirect = FALSE;
attrs.width = width;
attrs.height = height;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
/* We make an assumption that gdk_window_new() is going to call
* XCreateWindow as it's first operation; this seems to be true currently
* as long as you pass in a colormap.
*/
if (create_serial)
*create_serial = XNextRequest (xdisplay);
window =
gdk_window_new (gdk_screen_get_root_window(screen),
&attrs, attributes_mask);
gdk_window_resize (window, width, height);
meta_frames_manage_window (ui->frames, GDK_WINDOW_XID (window), window);
return GDK_WINDOW_XID (window);
}
void
meta_ui_destroy_frame_window (MetaUI *ui,
Window xwindow)
{
meta_frames_unmanage_window (ui->frames, xwindow);
}
void
meta_ui_move_resize_frame (MetaUI *ui,
Window frame,
int x,
int y,
int width,
int height)
{
meta_frames_move_resize_frame (ui->frames, frame, x, y, width, height);
}
void
meta_ui_map_frame (MetaUI *ui,
Window xwindow)
{
GdkWindow *window;
window = gdk_xid_table_lookup (xwindow);
if (window)
gdk_window_show_unraised (window);
}
void
meta_ui_unmap_frame (MetaUI *ui,
Window xwindow)
{
GdkWindow *window;
window = gdk_xid_table_lookup (xwindow);
if (window)
gdk_window_hide (window);
}
void
meta_ui_unflicker_frame_bg (MetaUI *ui,
Window xwindow,
int target_width,
int target_height)
{
meta_frames_unflicker_bg (ui->frames, xwindow,
target_width, target_height);
}
void
meta_ui_repaint_frame (MetaUI *ui,
Window xwindow)
{
meta_frames_repaint_frame (ui->frames, xwindow);
}
void
meta_ui_reset_frame_bg (MetaUI *ui,
Window xwindow)
{
meta_frames_reset_bg (ui->frames, xwindow);
}
void
meta_ui_apply_frame_shape (MetaUI *ui,
Window xwindow,
int new_window_width,
int new_window_height,
gboolean window_has_shape)
{
meta_frames_apply_shapes (ui->frames, xwindow,
new_window_width, new_window_height,
window_has_shape);
}
void
meta_ui_queue_frame_draw (MetaUI *ui,
Window xwindow)
{
meta_frames_queue_draw (ui->frames, xwindow);
}
void
meta_ui_set_frame_title (MetaUI *ui,
Window xwindow,
const char *title)
{
meta_frames_set_title (ui->frames, xwindow, title);
}
MetaWindowMenu*
meta_ui_window_menu_new (MetaUI *ui,
Window client_xwindow,
MetaMenuOp ops,
MetaMenuOp insensitive,
unsigned long active_workspace,
int n_workspaces,
MetaWindowMenuFunc func,
gpointer data)
{
return meta_window_menu_new (ui->frames,
ops, insensitive,
client_xwindow,
active_workspace,
n_workspaces,
func, data);
}
void
meta_ui_window_menu_popup (MetaWindowMenu *menu,
int root_x,
int root_y,
int button,
guint32 timestamp)
{
meta_window_menu_popup (menu, root_x, root_y, button, timestamp);
}
void
meta_ui_window_menu_free (MetaWindowMenu *menu)
{
meta_window_menu_free (menu);
}
GdkPixbuf*
meta_gdk_pixbuf_get_from_pixmap (Pixmap xpixmap,
int src_x,
int src_y,
int width,
int height)
{
cairo_surface_t *surface;
Display *display;
Window root_return;
int x_ret, y_ret;
unsigned int w_ret, h_ret, bw_ret, depth_ret;
XWindowAttributes attrs;
GdkPixbuf *retval;
display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
if (!XGetGeometry (display, xpixmap, &root_return,
&x_ret, &y_ret, &w_ret, &h_ret, &bw_ret, &depth_ret))
return NULL;
if (depth_ret == 1)
{
surface = cairo_xlib_surface_create_for_bitmap (display,
xpixmap,
GDK_SCREEN_XSCREEN (gdk_screen_get_default ()),
w_ret,
h_ret);
}
else
{
if (!XGetWindowAttributes (display, root_return, &attrs))
return NULL;
surface = cairo_xlib_surface_create (display,
xpixmap,
attrs.visual,
w_ret, h_ret);
}
retval = gdk_pixbuf_get_from_surface (surface,
src_x,
src_y,
width,
height);
cairo_surface_destroy (surface);
return retval;
}
void
meta_ui_push_delay_exposes (MetaUI *ui)
{
meta_frames_push_delay_exposes (ui->frames);
}
void
meta_ui_pop_delay_exposes (MetaUI *ui)
{
meta_frames_pop_delay_exposes (ui->frames);
}
GdkPixbuf*
meta_ui_get_default_window_icon (MetaUI *ui)
{
static GdkPixbuf *default_icon = NULL;
if (default_icon == NULL)
{
GtkIconTheme *theme;
gboolean icon_exists;
theme = gtk_icon_theme_get_default ();
icon_exists = gtk_icon_theme_has_icon (theme, META_DEFAULT_ICON_NAME);
if (icon_exists)
default_icon = gtk_icon_theme_load_icon (theme,
META_DEFAULT_ICON_NAME,
META_ICON_WIDTH,
0,
NULL);
else
default_icon = gtk_icon_theme_load_icon (theme,
"image-missing",
META_ICON_WIDTH,
0,
NULL);
g_assert (default_icon);
}
g_object_ref (G_OBJECT (default_icon));
return default_icon;
}
GdkPixbuf*
meta_ui_get_default_mini_icon (MetaUI *ui)
{
static GdkPixbuf *default_icon = NULL;
if (default_icon == NULL)
{
GtkIconTheme *theme;
gboolean icon_exists;
theme = gtk_icon_theme_get_default ();
icon_exists = gtk_icon_theme_has_icon (theme, META_DEFAULT_ICON_NAME);
if (icon_exists)
default_icon = gtk_icon_theme_load_icon (theme,
META_DEFAULT_ICON_NAME,
META_MINI_ICON_WIDTH,
0,
NULL);
else
default_icon = gtk_icon_theme_load_icon (theme,
"image-missing",
META_MINI_ICON_WIDTH,
0,
NULL);
g_assert (default_icon);
}
g_object_ref (G_OBJECT (default_icon));
return default_icon;
}
gboolean
meta_ui_window_should_not_cause_focus (Display *xdisplay,
Window xwindow)
{
GdkWindow *window;
window = gdk_xid_table_lookup (xwindow);
/* we shouldn't cause focus if we're an override redirect
* toplevel which is not foreign
*/
if (window && gdk_window_get_window_type (window) == GDK_WINDOW_TEMP)
return TRUE;
else
return FALSE;
}
char*
meta_text_property_to_utf8 (Display *xdisplay,
const XTextProperty *prop)
{
char **list;
int count;
char *retval;
list = NULL;
count = gdk_text_property_to_utf8_list (gdk_x11_xatom_to_atom (prop->encoding),
prop->format,
prop->value,
prop->nitems,
&list);
if (count == 0)
retval = NULL;
else
{
retval = list[0];
list[0] = g_strdup (""); /* something to free */
}
g_strfreev (list);
return retval;
}
void
meta_ui_theme_get_frame_borders (MetaUI *ui,
MetaFrameType type,
MetaFrameFlags flags,
int *top_height,
int *bottom_height,
int *left_width,
int *right_width)
{
int text_height;
PangoContext *context;
const PangoFontDescription *font_desc;
GtkStyle *default_style;
if (meta_ui_have_a_theme ())
{
context = gtk_widget_get_pango_context (GTK_WIDGET (ui->frames));
font_desc = meta_prefs_get_titlebar_font ();
if (!font_desc)
{
default_style = gtk_widget_get_default_style ();
font_desc = default_style->font_desc;
}
text_height = meta_pango_font_desc_get_text_height (font_desc, context);
meta_theme_get_frame_borders (meta_theme_get_current (),
type, text_height, flags,
top_height, bottom_height,
left_width, right_width);
}
else
{
*top_height = *bottom_height = *left_width = *right_width = 0;
}
}
void
meta_ui_set_current_theme (const char *name,
gboolean force_reload)
{
meta_theme_set_current (name, force_reload);
meta_invalidate_default_icons ();
}
gboolean
meta_ui_have_a_theme (void)
{
return meta_theme_get_current () != NULL;
}
static void
meta_ui_accelerator_parse (const char *accel,
guint *keysym,
guint *keycode,
GdkModifierType *keymask)
{
if (accel[0] == '0' && accel[1] == 'x')
{
*keysym = 0;
*keycode = (guint) strtoul (accel, NULL, 16);
*keymask = 0;
}
else
gtk_accelerator_parse (accel, keysym, keymask);
}
gboolean
meta_ui_parse_accelerator (const char *accel,
unsigned int *keysym,
unsigned int *keycode,
MetaVirtualModifier *mask)
{
GdkModifierType gdk_mask = 0;
guint gdk_sym = 0;
guint gdk_code = 0;
*keysym = 0;
*keycode = 0;
*mask = 0;
if (!accel[0] || strcmp (accel, "disabled") == 0)
return TRUE;
meta_ui_accelerator_parse (accel, &gdk_sym, &gdk_code, &gdk_mask);
if (gdk_mask == 0 && gdk_sym == 0 && gdk_code == 0)
return FALSE;
if (gdk_sym == None && gdk_code == 0)
return FALSE;
if (gdk_mask & GDK_RELEASE_MASK) /* we don't allow this */
return FALSE;
*keysym = gdk_sym;
*keycode = gdk_code;
if (gdk_mask & GDK_SHIFT_MASK)
*mask |= META_VIRTUAL_SHIFT_MASK;
if (gdk_mask & GDK_CONTROL_MASK)
*mask |= META_VIRTUAL_CONTROL_MASK;
if (gdk_mask & GDK_MOD1_MASK)
*mask |= META_VIRTUAL_ALT_MASK;
if (gdk_mask & GDK_MOD2_MASK)
*mask |= META_VIRTUAL_MOD2_MASK;
if (gdk_mask & GDK_MOD3_MASK)
*mask |= META_VIRTUAL_MOD3_MASK;
if (gdk_mask & GDK_MOD4_MASK)
*mask |= META_VIRTUAL_MOD4_MASK;
if (gdk_mask & GDK_MOD5_MASK)
*mask |= META_VIRTUAL_MOD5_MASK;
if (gdk_mask & GDK_SUPER_MASK)
*mask |= META_VIRTUAL_SUPER_MASK;
if (gdk_mask & GDK_HYPER_MASK)
*mask |= META_VIRTUAL_HYPER_MASK;
if (gdk_mask & GDK_META_MASK)
*mask |= META_VIRTUAL_META_MASK;
return TRUE;
}
/* Caller responsible for freeing return string of meta_ui_accelerator_name! */
gchar*
meta_ui_accelerator_name (unsigned int keysym,
MetaVirtualModifier mask)
{
GdkModifierType mods = 0;
if (keysym == 0 && mask == 0)
{
return g_strdup ("disabled");
}
if (mask & META_VIRTUAL_SHIFT_MASK)
mods |= GDK_SHIFT_MASK;
if (mask & META_VIRTUAL_CONTROL_MASK)
mods |= GDK_CONTROL_MASK;
if (mask & META_VIRTUAL_ALT_MASK)
mods |= GDK_MOD1_MASK;
if (mask & META_VIRTUAL_MOD2_MASK)
mods |= GDK_MOD2_MASK;
if (mask & META_VIRTUAL_MOD3_MASK)
mods |= GDK_MOD3_MASK;
if (mask & META_VIRTUAL_MOD4_MASK)
mods |= GDK_MOD4_MASK;
if (mask & META_VIRTUAL_MOD5_MASK)
mods |= GDK_MOD5_MASK;
if (mask & META_VIRTUAL_SUPER_MASK)
mods |= GDK_SUPER_MASK;
if (mask & META_VIRTUAL_HYPER_MASK)
mods |= GDK_HYPER_MASK;
if (mask & META_VIRTUAL_META_MASK)
mods |= GDK_META_MASK;
return gtk_accelerator_name (keysym, mods);
}
gboolean
meta_ui_parse_modifier (const char *accel,
MetaVirtualModifier *mask)
{
GdkModifierType gdk_mask = 0;
guint gdk_sym = 0;
guint gdk_code = 0;
*mask = 0;
if (accel == NULL || !accel[0] || strcmp (accel, "disabled") == 0)
return TRUE;
meta_ui_accelerator_parse (accel, &gdk_sym, &gdk_code, &gdk_mask);
if (gdk_mask == 0 && gdk_sym == 0 && gdk_code == 0)
return FALSE;
if (gdk_sym != None || gdk_code != 0)
return FALSE;
if (gdk_mask & GDK_RELEASE_MASK) /* we don't allow this */
return FALSE;
if (gdk_mask & GDK_SHIFT_MASK)
*mask |= META_VIRTUAL_SHIFT_MASK;
if (gdk_mask & GDK_CONTROL_MASK)
*mask |= META_VIRTUAL_CONTROL_MASK;
if (gdk_mask & GDK_MOD1_MASK)
*mask |= META_VIRTUAL_ALT_MASK;
if (gdk_mask & GDK_MOD2_MASK)
*mask |= META_VIRTUAL_MOD2_MASK;
if (gdk_mask & GDK_MOD3_MASK)
*mask |= META_VIRTUAL_MOD3_MASK;
if (gdk_mask & GDK_MOD4_MASK)
*mask |= META_VIRTUAL_MOD4_MASK;
if (gdk_mask & GDK_MOD5_MASK)
*mask |= META_VIRTUAL_MOD5_MASK;
if (gdk_mask & GDK_SUPER_MASK)
*mask |= META_VIRTUAL_SUPER_MASK;
if (gdk_mask & GDK_HYPER_MASK)
*mask |= META_VIRTUAL_HYPER_MASK;
if (gdk_mask & GDK_META_MASK)
*mask |= META_VIRTUAL_META_MASK;
return TRUE;
}
gboolean
meta_ui_window_is_widget (MetaUI *ui,
Window xwindow)
{
GdkWindow *window;
window = gdk_xid_table_lookup (xwindow);
if (window)
{
void *user_data = NULL;
gdk_window_get_user_data (window, &user_data);
return user_data != NULL && user_data != ui->frames;
}
else
return FALSE;
}
/* stock icon code Copyright (C) 2002 Jorn Baayen <jorn@nl.linux.org> */
typedef struct
{
char *stock_id;
const guint8 *icon_data;
} MetaStockIcon;
static void
meta_stock_icons_init (void)
{
GtkIconFactory *factory;
int i;
MetaStockIcon items[] =
{
{ METACITY_STOCK_DELETE, stock_delete_data },
{ METACITY_STOCK_MINIMIZE, stock_minimize_data },
{ METACITY_STOCK_MAXIMIZE, stock_maximize_data }
};
factory = gtk_icon_factory_new ();
gtk_icon_factory_add_default (factory);
for (i = 0; i < (gint) G_N_ELEMENTS (items); i++)
{
GtkIconSet *icon_set;
GdkPixbuf *pixbuf;
pixbuf = gdk_pixbuf_new_from_inline (-1, items[i].icon_data,
FALSE,
NULL);
icon_set = gtk_icon_set_new_from_pixbuf (pixbuf);
gtk_icon_factory_add (factory, items[i].stock_id, icon_set);
gtk_icon_set_unref (icon_set);
g_object_unref (G_OBJECT (pixbuf));
}
g_object_unref (G_OBJECT (factory));
}
int
meta_ui_get_drag_threshold (MetaUI *ui)
{
GtkSettings *settings;
int threshold;
settings = gtk_widget_get_settings (GTK_WIDGET (ui->frames));
threshold = 8;
g_object_get (G_OBJECT (settings), "gtk-dnd-drag-threshold", &threshold, NULL);
return threshold;
}
MetaUIDirection
meta_ui_get_direction (void)
{
if (gtk_widget_get_default_direction() == GTK_TEXT_DIR_RTL)
return META_UI_DIRECTION_RTL;
return META_UI_DIRECTION_LTR;
}
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