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XCB: implement set_clip_region

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This commit is contained in:
Ian Osgood 2006-06-21 07:06:20 -07:00 • committed by Jamey Sharp
parent 2eeb338590
commit 72b51b6f0c
1 changed files with 93 additions and 1 deletions
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94
src/cairo-xcb-surface.c
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@ -95,6 +95,9 @@ typedef struct cairo_xcb_surface {
int height;
int depth;
XCBRECTANGLE *clip_rects;
int num_clip_rects;
XCBRenderPICTURE picture;
XCBRenderPICTFORMINFO format;
int has_format;
@ -195,6 +198,8 @@ _cairo_xcb_surface_finish (void *abstract_surface)
if (surface->gc.xid)
XCBFreeGC (surface->dpy, surface->gc);
free (surface->clip_rects);
surface->dpy = NULL;
return CAIRO_STATUS_SUCCESS;
@ -453,6 +458,26 @@ _get_image_surface (cairo_xcb_surface_t *surface,
return CAIRO_STATUS_NO_MEMORY;
}
static void
_cairo_xcb_surface_set_picture_clip_rects (cairo_xcb_surface_t *surface)
{
if (surface->num_clip_rects)
XCBRenderSetPictureClipRectangles (surface->dpy, surface->picture,
0, 0,
surface->num_clip_rects,
surface->clip_rects);
}
static void
_cairo_xcb_surface_set_gc_clip_rects (cairo_xcb_surface_t *surface)
{
if (surface->num_clip_rects)
XCBSetClipRectangles(surface->dpy, XCBClipOrderingYXSorted, surface->gc,
0, 0,
surface->num_clip_rects,
surface->clip_rects );
}
static void
_cairo_xcb_surface_ensure_gc (cairo_xcb_surface_t *surface)
{
@ -461,6 +486,7 @@ _cairo_xcb_surface_ensure_gc (cairo_xcb_surface_t *surface)
surface->gc = XCBGCONTEXTNew(surface->dpy);
XCBCreateGC (surface->dpy, surface->gc, surface->drawable, 0, 0);
_cairo_xcb_surface_set_gc_clip_rects(surface);
}
static cairo_status_t
@ -939,6 +965,69 @@ _cairo_xcb_surface_composite_trapezoids (cairo_operator_t op,
return status;
}
static cairo_int_status_t
_cairo_xcb_surface_set_clip_region (void *abstract_surface,
pixman_region16_t *region)
{
cairo_xcb_surface_t *surface = abstract_surface;
if (surface->clip_rects) {
free (surface->clip_rects);
surface->clip_rects = NULL;
}
surface->num_clip_rects = 0;
if (region == NULL) {
if (surface->gc.xid) {
CARD32 mask = XCBGCClipMask;
CARD32 pa[] = { XCBNone };
XCBChangeGC (surface->dpy, surface->gc, mask, pa);
}
if (surface->has_format && surface->picture.xid) {
CARD32 mask = XCBRenderCPClipMask;
CARD32 pa[] = { XCBNone };
XCBRenderChangePicture (surface->dpy, surface->picture, mask, pa);
}
} else {
pixman_box16_t *boxes;
XCBRECTANGLE *rects = NULL;
int n_boxes, i;
n_boxes = pixman_region_num_rects (region);
if (n_boxes > 0) {
rects = malloc (sizeof(XCBRECTANGLE) * n_boxes);
if (rects == NULL)
return CAIRO_STATUS_NO_MEMORY;
} else {
rects = NULL;
}
boxes = pixman_region_rects (region);
for (i = 0; i < n_boxes; i++) {
rects[i].x = boxes[i].x1;
rects[i].y = boxes[i].y1;
rects[i].width = boxes[i].x2 - boxes[i].x1;
rects[i].height = boxes[i].y2 - boxes[i].y1;
}
surface->clip_rects = rects;
surface->num_clip_rects = n_boxes;
if (surface->gc.xid)
_cairo_xcb_surface_set_gc_clip_rects (surface);
if (surface->picture.xid)
_cairo_xcb_surface_set_picture_clip_rects (surface);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_xcb_surface_get_extents (void *abstract_surface,
cairo_rectangle_int16_t *rectangle)
@ -968,7 +1057,7 @@ static const cairo_surface_backend_t cairo_xcb_surface_backend = {
_cairo_xcb_surface_composite_trapezoids,
NULL, /* copy_page */
NULL, /* show_page */
NULL, /* _cairo_xcb_surface_set_clip_region */
_cairo_xcb_surface_set_clip_region,
NULL, /* intersect_clip_path */
_cairo_xcb_surface_get_extents,
NULL, /* old_show_glyphs */
@ -1034,6 +1123,9 @@ _cairo_xcb_surface_create_internal (XCBConnection *dpy,
surface->height = height;
surface->depth = depth;
surface->clip_rects = NULL;
surface->num_clip_rects = 0;
if (format) {
surface->depth = format->depth;
} else if (visual) {