static CStatus
CBitmapSurface_Composite(CSurface *_this,
CUInt32 x,
CUInt32 y,
CUInt32 width,
CUInt32 height,
pixman_image_t *src,
pixman_image_t *mask,
pixman_operator_t op)
{
/* declarations */
CBitmap *image;
/* assertions */
CASSERT((_this != 0));
CASSERT((src != 0));
CASSERT((mask != 0));
/* get the image */
image = ((CBitmapSurface *)_this)->image;
/* perform the composite synchronously */
CMutex_Lock(image->lock);
{
/* ensure the image data isn't locked */
if(image->locked)
{
CMutex_Unlock(image->lock);
return CStatus_InvalidOperation_ImageLocked;
}
/* perform the composite */
pixman_composite
(op, src, mask, image->image, 0, 0, 0, 0, x, y, width, height);
}
CMutex_Unlock(image->lock);
/* return successfully */
return CStatus_OK;
}
/* 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 cairo_int_status_t
_cairo_image_surface_composite (cairo_operator_t op,
cairo_pattern_t *src_pattern,
cairo_pattern_t *mask_pattern,
void *abstract_dst,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height)
{
cairo_surface_attributes_t src_attr, mask_attr;
cairo_image_surface_t *dst = abstract_dst;
cairo_image_surface_t *src;
cairo_image_surface_t *mask;
cairo_int_status_t status;
status = _cairo_pattern_acquire_surfaces (src_pattern, mask_pattern,
&dst->base,
src_x, src_y,
mask_x, mask_y,
width, height,
(cairo_surface_t **) &src,
(cairo_surface_t **) &mask,
&src_attr, &mask_attr);
if (status)
return status;
status = _cairo_image_surface_set_attributes (src, &src_attr);
if (status)
goto CLEANUP_SURFACES;
if (mask)
{
status = _cairo_image_surface_set_attributes (mask, &mask_attr);
if (status)
goto CLEANUP_SURFACES;
pixman_composite (_pixman_operator (op),
src->pixman_image,
mask->pixman_image,
dst->pixman_image,
src_x + src_attr.x_offset,
src_y + src_attr.y_offset,
mask_x + mask_attr.x_offset,
mask_y + mask_attr.y_offset,
dst_x, dst_y,
width, height);
}
else
{
pixman_composite (_pixman_operator (op),
src->pixman_image,
NULL,
dst->pixman_image,
src_x + src_attr.x_offset,
src_y + src_attr.y_offset,
0, 0,
dst_x, dst_y,
width, height);
}
if (!_cairo_operator_bounded_by_source (op))
status = _cairo_surface_composite_fixup_unbounded (&dst->base,
&src_attr, src->width, src->height,
mask ? &mask_attr : NULL,
mask ? mask->width : 0,
mask ? mask->height : 0,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y, width, height);
CLEANUP_SURFACES:
if (mask)
_cairo_pattern_release_surface (mask_pattern, &mask->base, &mask_attr);
_cairo_pattern_release_surface (src_pattern, &src->base, &src_attr);
return status;
}
static cairo_int_status_t
_cairo_image_surface_composite_trapezoids (cairo_operator_t op,
cairo_pattern_t *pattern,
void *abstract_dst,
cairo_antialias_t antialias,
int src_x,
int src_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height,
cairo_trapezoid_t *traps,
int num_traps)
{
cairo_surface_attributes_t attributes;
cairo_image_surface_t *dst = abstract_dst;
cairo_image_surface_t *src;
cairo_int_status_t status;
pixman_image_t *mask;
pixman_format_t *format;
pixman_bits_t *mask_data;
int mask_stride;
int mask_bpp;
/* Special case adding trapezoids onto a mask surface; we want to avoid
* creating an intermediate temporary mask unecessarily.
*
* We make the assumption here that the portion of the trapezoids
* contained within the surface is bounded by [dst_x,dst_y,width,height];
* the Cairo core code passes bounds based on the trapezoid extents.
*
* Currently the check surface->has_clip is needed for correct
* functioning, since pixman_add_trapezoids() doesn't obey the
* surface clip, which is a libpixman bug , but there's no harm in
* falling through to the general case when the surface is clipped
* since libpixman would have to generate an intermediate mask anyways.
*/
if (op == CAIRO_OPERATOR_ADD &&
_cairo_pattern_is_opaque_solid (pattern) &&
_cairo_image_surface_is_alpha_only (dst) &&
!dst->has_clip &&
antialias != CAIRO_ANTIALIAS_NONE)
{
pixman_add_trapezoids (dst->pixman_image, 0, 0,
(pixman_trapezoid_t *) traps, num_traps);
return CAIRO_STATUS_SUCCESS;
}
status = _cairo_pattern_acquire_surface (pattern, &dst->base,
src_x, src_y, width, height,
(cairo_surface_t **) &src,
&attributes);
if (status)
return status;
status = _cairo_image_surface_set_attributes (src, &attributes);
if (status)
goto CLEANUP_SOURCE;
switch (antialias) {
case CAIRO_ANTIALIAS_NONE:
format = pixman_format_create (PIXMAN_FORMAT_NAME_A1);
mask_stride = (width + 31)/8;
mask_bpp = 1;
break;
default:
format = pixman_format_create (PIXMAN_FORMAT_NAME_A8);
mask_stride = (width + 3) & ~3;
mask_bpp = 8;
break;
}
if (!format) {
status = CAIRO_STATUS_NO_MEMORY;
goto CLEANUP_SOURCE;
}
/* The image must be initially transparent */
mask_data = calloc (1, mask_stride * height);
if (!mask_data) {
status = CAIRO_STATUS_NO_MEMORY;
pixman_format_destroy (format);
goto CLEANUP_SOURCE;
}
mask = pixman_image_create_for_data (mask_data, format, width, height,
mask_bpp, mask_stride);
pixman_format_destroy (format);
if (!mask) {
status = CAIRO_STATUS_NO_MEMORY;
goto CLEANUP_IMAGE_DATA;
}
/* XXX: The pixman_trapezoid_t cast is evil and needs to go away
* somehow. */
pixman_add_trapezoids (mask, - dst_x, - dst_y,
(pixman_trapezoid_t *) traps, num_traps);
pixman_composite (_pixman_operator (op),
src->pixman_image,
mask,
dst->pixman_image,
src_x + attributes.x_offset,
src_y + attributes.y_offset,
0, 0,
dst_x, dst_y,
width, height);
if (!_cairo_operator_bounded_by_mask (op))
status = _cairo_surface_composite_shape_fixup_unbounded (&dst->base,
&attributes, src->width, src->height,
width, height,
src_x, src_y,
0, 0,
dst_x, dst_y, width, height);
pixman_image_destroy (mask);
CLEANUP_IMAGE_DATA:
free (mask_data);
CLEANUP_SOURCE:
_cairo_pattern_release_surface (pattern, &src->base, &attributes);
return status;
}
void
pixman_fill_rectangles (pixman_operator_t op,
pixman_image_t *dst,
const pixman_color_t *color,
const pixman_rectangle_t *rects,
int nRects)
{
pixman_color_t color_s = *color;
if (color_s.alpha == 0xffff)
{
if (op == PIXMAN_OPERATOR_OVER)
op = PIXMAN_OPERATOR_SRC;
}
if (op == PIXMAN_OPERATOR_CLEAR)
color_s.red = color_s.green = color_s.blue = color_s.alpha = 0;
if (op == PIXMAN_OPERATOR_SRC || op == PIXMAN_OPERATOR_CLEAR)
{
/* We cast away the constness of rects here, because pixman_color_rects
temporarily modifies it */
pixman_color_rects (dst, dst, &color_s, nRects, (pixman_rectangle_t *)rects, 0, 0);
if (dst->alphaMap)
pixman_color_rects (dst->alphaMap, dst,
&color_s, nRects, (pixman_rectangle_t *)rects,
dst->alphaOrigin.x,
dst->alphaOrigin.y);
}
else
{
pixman_format_t rgbaFormat;
FbPixels *pixels;
pixman_image_t *src;
pixman_bits_t pixel;
pixman_format_init (&rgbaFormat, PICT_a8r8g8b8);
pixels = FbPixelsCreate (1, 1, rgbaFormat.depth);
if (!pixels)
goto bail1;
pixman_color_to_pixel (&rgbaFormat, &color_s, &pixel);
/* XXX: Originally, fb had the following:
(*pGC->ops->PolyFillRect) (&pPixmap->drawable, pGC, 1, &one);
I haven't checked to see what I might be breaking with a
trivial assignment instead.
*/
pixels->data[0] = pixel;
src = pixman_image_createForPixels (pixels, &rgbaFormat);
if (!src)
goto bail2;
pixman_image_set_repeat (src, 1);
while (nRects--)
{
pixman_composite (op, src, NULL, dst, 0, 0, 0, 0,
rects->x,
rects->y,
rects->width,
rects->height);
rects++;
}
pixman_image_destroy (src);
bail2:
FbPixelsDestroy (pixels);
bail1:
;
}
}