mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-06 00:30:08 +00:00
379 lines
11 KiB
C
379 lines
11 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gdkinternals.h"
|
|
#include "gdkrectangle.h"
|
|
#include "gdkprivate-x11.h"
|
|
#include "gdkscreen-x11.h"
|
|
#include "gdkdisplay-x11.h"
|
|
#include "gdkwindow-x11.h"
|
|
|
|
|
|
typedef struct _GdkWindowQueueItem GdkWindowQueueItem;
|
|
typedef struct _GdkWindowParentPos GdkWindowParentPos;
|
|
|
|
typedef enum {
|
|
GDK_WINDOW_QUEUE_TRANSLATE,
|
|
GDK_WINDOW_QUEUE_ANTIEXPOSE
|
|
} GdkWindowQueueType;
|
|
|
|
struct _GdkWindowQueueItem
|
|
{
|
|
GdkWindow *window;
|
|
gulong serial;
|
|
GdkWindowQueueType type;
|
|
union {
|
|
struct {
|
|
cairo_region_t *area;
|
|
gint dx;
|
|
gint dy;
|
|
} translate;
|
|
struct {
|
|
cairo_region_t *area;
|
|
} antiexpose;
|
|
} u;
|
|
};
|
|
|
|
void
|
|
_gdk_x11_window_move_resize_child (GdkWindow *window,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (width > 65535 ||
|
|
height > 65535)
|
|
{
|
|
g_warning ("Native children wider or taller than 65535 pixels are not supported");
|
|
|
|
if (width > 65535)
|
|
width = 65535;
|
|
if (height > 65535)
|
|
height = 65535;
|
|
}
|
|
|
|
window->x = x;
|
|
window->y = y;
|
|
window->width = width;
|
|
window->height = height;
|
|
|
|
/* We don't really care about origin overflow, because on overflow
|
|
* the window won't be visible anyway and thus it will be shaped
|
|
* to nothing
|
|
*/
|
|
_gdk_x11_window_tmp_unset_parent_bg (window);
|
|
_gdk_x11_window_tmp_unset_bg (window, TRUE);
|
|
XMoveResizeWindow (GDK_WINDOW_XDISPLAY (window),
|
|
GDK_WINDOW_XID (window),
|
|
window->x + window->parent->abs_x,
|
|
window->y + window->parent->abs_y,
|
|
width, height);
|
|
_gdk_x11_window_tmp_reset_parent_bg (window);
|
|
_gdk_x11_window_tmp_reset_bg (window, TRUE);
|
|
}
|
|
|
|
static Bool
|
|
expose_serial_predicate (Display *xdisplay,
|
|
XEvent *xev,
|
|
XPointer arg)
|
|
{
|
|
gulong *serial = (gulong *)arg;
|
|
|
|
if (xev->xany.type == Expose || xev->xany.type == GraphicsExpose)
|
|
*serial = MIN (*serial, xev->xany.serial);
|
|
|
|
return False;
|
|
}
|
|
|
|
/* Find oldest possible serial for an outstanding expose event
|
|
*/
|
|
static gulong
|
|
find_current_serial (Display *xdisplay)
|
|
{
|
|
XEvent xev;
|
|
gulong serial = NextRequest (xdisplay);
|
|
|
|
XSync (xdisplay, False);
|
|
|
|
XCheckIfEvent (xdisplay, &xev, expose_serial_predicate, (XPointer)&serial);
|
|
|
|
return serial;
|
|
}
|
|
|
|
static void
|
|
queue_delete_link (GQueue *queue,
|
|
GList *link)
|
|
{
|
|
if (queue->tail == link)
|
|
queue->tail = link->prev;
|
|
|
|
queue->head = g_list_remove_link (queue->head, link);
|
|
g_list_free_1 (link);
|
|
queue->length--;
|
|
}
|
|
|
|
static void
|
|
queue_item_free (GdkWindowQueueItem *item)
|
|
{
|
|
if (item->window)
|
|
{
|
|
g_object_remove_weak_pointer (G_OBJECT (item->window),
|
|
(gpointer *)&(item->window));
|
|
}
|
|
|
|
if (item->type == GDK_WINDOW_QUEUE_ANTIEXPOSE)
|
|
cairo_region_destroy (item->u.antiexpose.area);
|
|
else
|
|
{
|
|
if (item->u.translate.area)
|
|
cairo_region_destroy (item->u.translate.area);
|
|
}
|
|
|
|
g_free (item);
|
|
}
|
|
|
|
void
|
|
_gdk_x11_display_free_translate_queue (GdkDisplay *display)
|
|
{
|
|
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
|
|
|
|
if (display_x11->translate_queue)
|
|
{
|
|
g_queue_foreach (display_x11->translate_queue, (GFunc)queue_item_free, NULL);
|
|
g_queue_free (display_x11->translate_queue);
|
|
display_x11->translate_queue = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_window_queue (GdkWindow *window,
|
|
GdkWindowQueueItem *item)
|
|
{
|
|
GdkX11Display *display_x11 = GDK_X11_DISPLAY (GDK_WINDOW_DISPLAY (window));
|
|
|
|
if (!display_x11->translate_queue)
|
|
display_x11->translate_queue = g_queue_new ();
|
|
|
|
/* Keep length of queue finite by, if it grows too long,
|
|
* figuring out the latest relevant serial and discarding
|
|
* irrelevant queue items.
|
|
*/
|
|
if (display_x11->translate_queue->length >= 64)
|
|
{
|
|
gulong serial = find_current_serial (GDK_WINDOW_XDISPLAY (window));
|
|
GList *tmp_list = display_x11->translate_queue->head;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowQueueItem *item = tmp_list->data;
|
|
GList *next = tmp_list->next;
|
|
|
|
/* an overflow-safe (item->serial < serial) */
|
|
if (item->serial - serial > (gulong) G_MAXLONG)
|
|
{
|
|
queue_delete_link (display_x11->translate_queue, tmp_list);
|
|
queue_item_free (item);
|
|
}
|
|
|
|
tmp_list = next;
|
|
}
|
|
}
|
|
|
|
/* Catch the case where someone isn't processing events and there
|
|
* is an event stuck in the event queue with an old serial:
|
|
* If we can't reduce the queue length by the above method,
|
|
* discard anti-expose items. (We can't discard translate
|
|
* items
|
|
*/
|
|
if (display_x11->translate_queue->length >= 64)
|
|
{
|
|
GList *tmp_list = display_x11->translate_queue->head;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowQueueItem *item = tmp_list->data;
|
|
GList *next = tmp_list->next;
|
|
|
|
if (item->type == GDK_WINDOW_QUEUE_ANTIEXPOSE)
|
|
{
|
|
queue_delete_link (display_x11->translate_queue, tmp_list);
|
|
queue_item_free (item);
|
|
}
|
|
|
|
tmp_list = next;
|
|
}
|
|
}
|
|
|
|
item->window = window;
|
|
item->serial = NextRequest (GDK_WINDOW_XDISPLAY (window));
|
|
|
|
g_object_add_weak_pointer (G_OBJECT (window),
|
|
(gpointer *)&(item->window));
|
|
|
|
g_queue_push_tail (display_x11->translate_queue, item);
|
|
}
|
|
|
|
static GC
|
|
_get_scratch_gc (GdkWindow *window, cairo_region_t *clip_region)
|
|
{
|
|
GdkX11Screen *screen;
|
|
XRectangle *rectangles;
|
|
gint n_rects;
|
|
gint depth;
|
|
|
|
screen = GDK_X11_SCREEN (gdk_window_get_screen (window));
|
|
depth = gdk_visual_get_depth (gdk_window_get_visual (window)) - 1;
|
|
|
|
if (!screen->subwindow_gcs[depth])
|
|
{
|
|
XGCValues values;
|
|
|
|
values.graphics_exposures = True;
|
|
values.subwindow_mode = IncludeInferiors;
|
|
|
|
screen->subwindow_gcs[depth] = XCreateGC (screen->xdisplay,
|
|
GDK_WINDOW_XID (window),
|
|
GCSubwindowMode | GCGraphicsExposures,
|
|
&values);
|
|
}
|
|
|
|
_gdk_x11_region_get_xrectangles (clip_region,
|
|
0, 0,
|
|
&rectangles,
|
|
&n_rects);
|
|
|
|
XSetClipRectangles (screen->xdisplay,
|
|
screen->subwindow_gcs[depth],
|
|
0, 0,
|
|
rectangles, n_rects,
|
|
YXBanded);
|
|
|
|
g_free (rectangles);
|
|
return screen->subwindow_gcs[depth];
|
|
}
|
|
|
|
|
|
|
|
void
|
|
_gdk_x11_window_translate (GdkWindow *window,
|
|
cairo_region_t *area,
|
|
gint dx,
|
|
gint dy)
|
|
{
|
|
GdkWindowQueueItem *item;
|
|
GC xgc;
|
|
GdkRectangle extents;
|
|
|
|
cairo_region_get_extents (area, &extents);
|
|
|
|
xgc = _get_scratch_gc (window, area);
|
|
|
|
cairo_region_translate (area, -dx, -dy); /* Move to source region */
|
|
|
|
item = g_new (GdkWindowQueueItem, 1);
|
|
item->type = GDK_WINDOW_QUEUE_TRANSLATE;
|
|
item->u.translate.area = cairo_region_copy (area);
|
|
item->u.translate.dx = dx;
|
|
item->u.translate.dy = dy;
|
|
gdk_window_queue (window, item);
|
|
|
|
XCopyArea (GDK_WINDOW_XDISPLAY (window),
|
|
GDK_WINDOW_XID (window),
|
|
GDK_WINDOW_XID (window),
|
|
xgc,
|
|
extents.x - dx, extents.y - dy,
|
|
extents.width, extents.height,
|
|
extents.x, extents.y);
|
|
}
|
|
|
|
gboolean
|
|
_gdk_x11_window_queue_antiexpose (GdkWindow *window,
|
|
cairo_region_t *area)
|
|
{
|
|
GdkWindowQueueItem *item = g_new (GdkWindowQueueItem, 1);
|
|
item->type = GDK_WINDOW_QUEUE_ANTIEXPOSE;
|
|
item->u.antiexpose.area = area;
|
|
|
|
gdk_window_queue (window, item);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_gdk_x11_window_process_expose (GdkWindow *window,
|
|
gulong serial,
|
|
GdkRectangle *area)
|
|
{
|
|
cairo_region_t *invalidate_region = cairo_region_create_rectangle (area);
|
|
GdkX11Display *display_x11 = GDK_X11_DISPLAY (GDK_WINDOW_DISPLAY (window));
|
|
|
|
if (display_x11->translate_queue)
|
|
{
|
|
GList *tmp_list = display_x11->translate_queue->head;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowQueueItem *item = tmp_list->data;
|
|
GList *next = tmp_list->next;
|
|
|
|
/* an overflow-safe (serial < item->serial) */
|
|
if (serial - item->serial > (gulong) G_MAXLONG)
|
|
{
|
|
if (item->window == window)
|
|
{
|
|
if (item->type == GDK_WINDOW_QUEUE_TRANSLATE)
|
|
{
|
|
if (item->u.translate.area)
|
|
{
|
|
cairo_region_t *intersection;
|
|
|
|
intersection = cairo_region_copy (invalidate_region);
|
|
cairo_region_intersect (intersection, item->u.translate.area);
|
|
cairo_region_subtract (invalidate_region, intersection);
|
|
cairo_region_translate (intersection, item->u.translate.dx, item->u.translate.dy);
|
|
cairo_region_union (invalidate_region, intersection);
|
|
cairo_region_destroy (intersection);
|
|
}
|
|
else
|
|
cairo_region_translate (invalidate_region, item->u.translate.dx, item->u.translate.dy);
|
|
}
|
|
else /* anti-expose */
|
|
{
|
|
cairo_region_subtract (invalidate_region, item->u.antiexpose.area);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
queue_delete_link (display_x11->translate_queue, tmp_list);
|
|
queue_item_free (item);
|
|
}
|
|
tmp_list = next;
|
|
}
|
|
}
|
|
|
|
if (!cairo_region_is_empty (invalidate_region))
|
|
_gdk_window_invalidate_for_expose (window, invalidate_region);
|
|
|
|
cairo_region_destroy (invalidate_region);
|
|
}
|