static __inline int
FbClipImageReg (pixman_region16_t *region,
pixman_region16_t *clip,
int dx,
int dy)
{
if (pixman_region_num_rects (region) == 1 &&
pixman_region_num_rects (clip) == 1)
{
pixman_box16_t *pRbox = pixman_region_rects (region);
pixman_box16_t *pCbox = pixman_region_rects (clip);
int v;
if (pRbox->x1 < (v = pCbox->x1 + dx))
pRbox->x1 = BOUND(v);
if (pRbox->x2 > (v = pCbox->x2 + dx))
pRbox->x2 = BOUND(v);
if (pRbox->y1 < (v = pCbox->y1 + dy))
pRbox->y1 = BOUND(v);
if (pRbox->y2 > (v = pCbox->y2 + dy))
pRbox->y2 = BOUND(v);
if (pRbox->x1 >= pRbox->x2 ||
pRbox->y1 >= pRbox->y2)
{
pixman_region_empty (region);
}
}
else
{
pixman_region_translate (region, dx, dy);
pixman_region_intersect (region, clip, region);
pixman_region_translate (region, -dx, -dy);
}
return 1;
}
int
pixman_image_set_clip_region (pixman_image_t *image,
pixman_region16_t *region)
{
pixman_image_destroyClip (image);
if (region) {
image->clientClip = pixman_region_create ();
pixman_region_copy (image->clientClip, region);
image->clientClipType = CT_REGION;
}
if (image->freeCompClip)
pixman_region_destroy (image->pCompositeClip);
image->pCompositeClip = pixman_region_create();
pixman_region_union_rect (image->pCompositeClip, image->pCompositeClip,
0, 0, image->pixels->width, image->pixels->height);
image->freeCompClip = 1;
if (region) {
pixman_region_translate (image->pCompositeClip,
- image->clipOrigin.x,
- image->clipOrigin.y);
pixman_region_intersect (image->pCompositeClip,
image->pCompositeClip,
region);
pixman_region_translate (image->pCompositeClip,
image->clipOrigin.x,
image->clipOrigin.y);
}
image->stateChanges |= CPClipMask;
return 0;
}
static inline pixman_bool_t
miClipPictureReg(pixman_region16_t * pRegion,
pixman_region16_t * pClip, int dx, int dy)
{
if (pixman_region_n_rects(pRegion) == 1 &&
pixman_region_n_rects(pClip) == 1) {
pixman_box16_t *pRbox = pixman_region_rectangles(pRegion, NULL);
pixman_box16_t *pCbox = pixman_region_rectangles(pClip, NULL);
int v;
if (pRbox->x1 < (v = pCbox->x1 + dx))
pRbox->x1 = BOUND(v);
if (pRbox->x2 > (v = pCbox->x2 + dx))
pRbox->x2 = BOUND(v);
if (pRbox->y1 < (v = pCbox->y1 + dy))
pRbox->y1 = BOUND(v);
if (pRbox->y2 > (v = pCbox->y2 + dy))
pRbox->y2 = BOUND(v);
if (pRbox->x1 >= pRbox->x2 || pRbox->y1 >= pRbox->y2) {
pixman_region_init(pRegion);
}
}
else if (!pixman_region_not_empty(pClip))
return FALSE;
else {
if (dx || dy)
pixman_region_translate(pRegion, -dx, -dy);
if (!pixman_region_intersect(pRegion, pRegion, pClip))
return FALSE;
if (dx || dy)
pixman_region_translate(pRegion, dx, dy);
}
return pixman_region_not_empty(pRegion);
}
cairo_status_t
_cairo_clip_intersect_to_region (cairo_clip_t *clip,
pixman_region16_t *region)
{
if (!clip)
return CAIRO_STATUS_SUCCESS;
if (clip->path) {
/* Intersect clip path into region. */
}
if (clip->region)
pixman_region_intersect (region, clip->region, region);
if (clip->surface) {
pixman_region16_t *clip_rect;
pixman_region_status_t pixman_status;
cairo_status_t status = CAIRO_STATUS_SUCCESS;
clip_rect = _cairo_region_create_from_rectangle (&clip->surface_rect);
if (clip_rect == NULL)
return CAIRO_STATUS_NO_MEMORY;
pixman_status = pixman_region_intersect (region,
clip_rect,
region);
if (pixman_status != PIXMAN_REGION_STATUS_SUCCESS)
status = CAIRO_STATUS_NO_MEMORY;
pixman_region_destroy (clip_rect);
if (status)
return status;
}
return CAIRO_STATUS_SUCCESS;
}
static inline pixman_bool_t
miClipPictureSrc (pixman_region16_t * pRegion,
pixman_image_t * pPicture,
int dx,
int dy)
{
/* XXX what to do with clipping from transformed pictures? */
if (pPicture->common.transform || pPicture->type != BITS)
return TRUE;
if (pPicture->common.repeat)
{
/* If the clip region was set by a client, then it should be intersected
* with the composite region since it's interpreted as happening
* after the repeat algorithm.
*
* If the clip region was not set by a client, then it was imposed by
* boundaries of the pixmap, or by sibling or child windows, which means
* it should in theory be repeated along. FIXME: we ignore that case.
* It is only relevant for windows that are (a) clipped by siblings/children
* and (b) used as source. However this case is not useful anyway due
* to lack of GraphicsExpose events.
*/
if (pPicture->common.has_client_clip)
{
pixman_region_translate ( pRegion, dx, dy);
if (!pixman_region_intersect (pRegion, pRegion,
(pixman_region16_t *) pPicture->common.src_clip))
return FALSE;
pixman_region_translate ( pRegion, -dx, -dy);
}
return TRUE;
}
else
{
return miClipPictureReg (pRegion,
pPicture->common.src_clip,
dx,
dy);
}
}
static __inline int
FbClipImageSrc (pixman_region16_t *region,
pixman_image_t *image,
int dx,
int dy)
{
/* XXX what to do with clipping from transformed pictures? */
if (image->transform)
return 1;
if (image->repeat)
{
/* XXX no source clipping */
if (image->compositeClipSource &&
image->clientClipType != CT_NONE)
{
pixman_region_translate (region,
dx - image->clipOrigin.x,
dy - image->clipOrigin.y);
pixman_region_intersect (region, image->clientClip, region);
pixman_region_translate (region,
- (dx - image->clipOrigin.x),
- (dy - image->clipOrigin.y));
}
return 1;
}
else
{
pixman_region16_t *clip;
if (image->compositeClipSource)
clip = image->pCompositeClip;
else
clip = image->pSourceClip;
return FbClipImageReg (region,
clip,
dx,
dy);
}
return 1;
}
static cairo_status_t
_cairo_clip_intersect_region (cairo_clip_t *clip,
cairo_traps_t *traps,
cairo_surface_t *target)
{
pixman_region16_t *region;
cairo_status_t status;
if (clip->mode != CAIRO_CLIP_MODE_REGION)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _cairo_traps_extract_region (traps, ®ion);
if (status)
return status;
if (region == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = CAIRO_STATUS_SUCCESS;
if (clip->region == NULL) {
clip->region = region;
} else {
pixman_region16_t *intersection = pixman_region_create();
if (pixman_region_intersect (intersection,
clip->region, region)
== PIXMAN_REGION_STATUS_SUCCESS) {
pixman_region_destroy (clip->region);
clip->region = intersection;
} else {
status = CAIRO_STATUS_NO_MEMORY;
}
pixman_region_destroy (region);
}
clip->serial = _cairo_surface_allocate_clip_serial (target);
return status;
}
cairo_status_t
_cairo_clip_intersect_to_rectangle (cairo_clip_t *clip,
cairo_rectangle_int16_t *rectangle)
{
if (!clip)
return CAIRO_STATUS_SUCCESS;
if (clip->path) {
/* Intersect path extents here. */
}
if (clip->region) {
pixman_region16_t *intersection;
cairo_status_t status = CAIRO_STATUS_SUCCESS;
pixman_region_status_t pixman_status;
intersection = _cairo_region_create_from_rectangle (rectangle);
if (intersection == NULL)
return CAIRO_STATUS_NO_MEMORY;
pixman_status = pixman_region_intersect (intersection,
clip->region,
intersection);
if (pixman_status == PIXMAN_REGION_STATUS_SUCCESS)
_cairo_region_extents_rectangle (intersection, rectangle);
else
status = CAIRO_STATUS_NO_MEMORY;
pixman_region_destroy (intersection);
if (status)
return status;
}
if (clip->surface)
_cairo_rectangle_intersect (rectangle, &clip->surface_rect);
return CAIRO_STATUS_SUCCESS;
}
EAPI int
ecore_x_xregion_intersect(Ecore_X_XRegion *dst, Ecore_X_XRegion *r1, Ecore_X_XRegion *r2)
{
return pixman_region_intersect((pixman_region16_t *)dst, (pixman_region16_t *)r1, (pixman_region16_t *)r2);
}
/* XXX: There are failure cases in this function. Don't we need to
* propagate the errors out?
*/
void
pixman_composite_trapezoids (pixman_operator_t op,
pixman_image_t *src,
pixman_image_t *dst,
int xSrc,
int ySrc,
const pixman_trapezoid_t *traps,
int ntraps)
{
pixman_image_t *image = NULL;
pixman_box16_t traps_bounds, dst_bounds, bounds;
pixman_region16_t *traps_region, *dst_region;
int16_t xDst, yDst;
int16_t xRel, yRel;
pixman_format_t *format;
if (ntraps == 0)
return;
/*
* Check for solid alpha add
*/
if (op == PIXMAN_OPERATOR_ADD && miIsSolidAlpha (src))
{
for (; ntraps; ntraps--, traps++)
fbRasterizeTrapezoid (dst, traps, 0, 0);
return;
}
xDst = traps[0].left.p1.x >> 16;
yDst = traps[0].left.p1.y >> 16;
pixman_trapezoid_bounds (ntraps, traps, &traps_bounds);
traps_region = pixman_region_create_simple (&traps_bounds);
/* XXX: If the image has a clip region set, we should really be
* fetching it here instead, but it looks like we don't yet expose
* a pixman_image_get_clip_region function. */
dst_bounds.x1 = 0;
dst_bounds.y1 = 0;
dst_bounds.x2 = pixman_image_get_width (dst);
dst_bounds.y2 = pixman_image_get_height (dst);
dst_region = pixman_region_create_simple (&dst_bounds);
pixman_region_intersect (traps_region, traps_region, dst_region);
bounds = *(pixman_region_extents (traps_region));
pixman_region_destroy (traps_region);
pixman_region_destroy (dst_region);
if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
return;
format = pixman_format_create (PIXMAN_FORMAT_NAME_A8);
if (!format)
return;
image = FbCreateAlphaPicture (dst, format,
bounds.x2 - bounds.x1,
bounds.y2 - bounds.y1);
if (!image)
{
pixman_format_destroy (format);
return;
}
for (; ntraps; ntraps--, traps++)
{
if (!xTrapezoidValid(traps))
continue;
fbRasterizeTrapezoid (image, traps,
-bounds.x1, -bounds.y1);
}
xRel = bounds.x1 + xSrc - xDst;
yRel = bounds.y1 + ySrc - yDst;
pixman_composite (op, src, image, dst,
xRel, yRel, 0, 0, bounds.x1, bounds.y1,
bounds.x2 - bounds.x1,
bounds.y2 - bounds.y1);
pixman_image_destroy (image);
pixman_format_destroy (format);
}
static void
pixman_color_rects (pixman_image_t *dst,
pixman_image_t *clipPict,
pixman_color_t *color,
int nRect,
pixman_rectangle_t *rects,
int xoff,
int yoff)
{
pixman_bits_t pixel;
pixman_region16_t *clip;
pixman_region16_t *rects_as_region;
pixman_box16_t *clipped_rects;
int i, n_clipped_rects;
FillFunc func;
pixman_color_to_pixel (&dst->image_format,
color,
&pixel);
/* offset to the right place on the destination image */
xoff -= dst->pixels->x;
yoff -= dst->pixels->y;
clip = pixman_region_create();
pixman_region_union_rect (clip, clip,
dst->pixels->x, dst->pixels->y,
dst->pixels->width, dst->pixels->height);
pixman_region_intersect (clip, clip, clipPict->pCompositeClip);
if (clipPict->alphaMap)
{
pixman_region_translate (clip,
-clipPict->alphaOrigin.x,
-clipPict->alphaOrigin.y);
pixman_region_intersect (clip, clip, clipPict->alphaMap->pCompositeClip);
pixman_region_translate (clip,
clipPict->alphaOrigin.x,
clipPict->alphaOrigin.y);
}
if (xoff || yoff)
{
for (i = 0; i < nRect; i++)
{
rects[i].x -= xoff;
rects[i].y -= yoff;
}
}
rects_as_region = pixman_region_create ();
for (i = 0; i < nRect; i++)
{
pixman_region_union_rect (rects_as_region, rects_as_region,
rects[i].x, rects[i].y,
rects[i].width, rects[i].height);
}
pixman_region_intersect (rects_as_region, rects_as_region, clip);
pixman_region_destroy (clip);
n_clipped_rects = pixman_region_num_rects (rects_as_region);
clipped_rects = pixman_region_rects (rects_as_region);
if (dst->pixels->bpp == 8)
func = pixman_fill_rect_8bpp;
else if (dst->pixels->bpp == 32)
func = pixman_fill_rect_32bpp;
else if (dst->pixels->bpp == 1)
func = pixman_fill_rect_1bpp;
else
func = pixman_fill_rect_general;
for (i = 0; i < n_clipped_rects; i++) {
(*func) (dst,
clipped_rects[i].x1,
clipped_rects[i].y1,
clipped_rects[i].x2 - clipped_rects[i].x1,
clipped_rects[i].y2 - clipped_rects[i].y1,
&pixel);
}
pixman_region_destroy (rects_as_region);
if (xoff || yoff)
{
for (i = 0; i < nRect; i++)
{
rects[i].x += xoff;
rects[i].y += yoff;
}
}
}