static cairo_bool_t check_glyphs (cairo_composite_rectangles_t *composite,
cairo_scaled_font_t *scaled_font)
{
if (! _cairo_clip_is_region (composite->clip))
return FALSE;
if (cairo_scaled_font_get_type (scaled_font) != CAIRO_FONT_TYPE_WIN32)
return FALSE;
if (! _cairo_pattern_is_opaque_solid (&composite->source_pattern.base))
return FALSE;
return (composite->op == CAIRO_OPERATOR_CLEAR ||
composite->op == CAIRO_OPERATOR_SOURCE ||
composite->op == CAIRO_OPERATOR_OVER);
}
cairo_status_t
_cairo_clip_combine_with_surface (const cairo_clip_t *clip,
cairo_surface_t *dst,
int dst_x, int dst_y)
{
cairo_clip_path_t *copy_path;
cairo_clip_path_t *clip_path;
cairo_clip_t *copy;
cairo_status_t status = CAIRO_STATUS_SUCCESS;
copy = _cairo_clip_copy_with_translation (clip, -dst_x, -dst_y);
copy_path = copy->path;
copy->path = NULL;
if (copy->boxes) {
status = _cairo_surface_paint (dst,
CAIRO_OPERATOR_IN,
&_cairo_pattern_white.base,
copy);
}
clip = NULL;
if (_cairo_clip_is_region (copy))
clip = copy;
clip_path = copy_path;
while (status == CAIRO_STATUS_SUCCESS && clip_path) {
status = _cairo_surface_fill (dst,
CAIRO_OPERATOR_IN,
&_cairo_pattern_white.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
clip);
clip_path = clip_path->prev;
}
copy->path = copy_path;
_cairo_clip_destroy (copy);
return status;
}
static cairo_status_t
clip_and_composite (cairo_composite_rectangles_t *extents,
draw_func_t draw_func,
void *draw_closure)
{
cairo_status_t status;
status = set_clip_region (extents);
if (unlikely (status))
return status;
if (extents->op == CAIRO_OPERATOR_SOURCE) {
status = clip_and_composite_source (extents, draw_func, draw_closure);
} else {
if (extents->op == CAIRO_OPERATOR_CLEAR) {
extents->source_pattern.solid = _cairo_pattern_white;
extents->op = CAIRO_OPERATOR_DEST_OUT;
}
if (! _cairo_clip_is_region (extents->clip)) {
if (extents->is_bounded)
status = clip_and_composite_with_mask (extents, draw_func, draw_closure);
else
status = clip_and_composite_combine (extents, draw_func, draw_closure);
} else {
status = draw_func ((cairo_image_surface_t *) extents->surface,
draw_closure,
extents->op,
&extents->source_pattern.base,
0, 0,
&extents->bounded);
}
}
if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded)
status = fixup_unbounded (extents);
return status;
}
cairo_status_t
_cairo_win32_display_surface_set_clip (cairo_win32_display_surface_t *surface,
cairo_clip_t *clip)
{
char stack[512];
cairo_rectangle_int_t extents;
int num_rects;
RGNDATA *data;
size_t data_size;
RECT *rects;
int i;
HRGN gdi_region;
cairo_status_t status;
cairo_region_t *region;
/* The semantics we want is that any clip set by cairo combines
* is intersected with the clip on device context that the
* surface was created for. To implement this, we need to
* save the original clip when first setting a clip on surface.
*/
assert (_cairo_clip_is_region (clip));
region = _cairo_clip_get_region (clip);
if (region == NULL)
return CAIRO_STATUS_SUCCESS;
cairo_region_get_extents (region, &extents);
num_rects = cairo_region_num_rectangles (region);
/* XXX see notes in _cairo_win32_save_initial_clip --
* this code will interact badly with a HDC which had an initial
* world transform -- we should probably manually transform the
* region rects, because SelectClipRgn takes device units, not
* logical units (unlike IntersectClipRect).
*/
data_size = sizeof (RGNDATAHEADER) + num_rects * sizeof (RECT);
if (data_size > sizeof (stack)) {
data = malloc (data_size);
if (!data)
return _cairo_error(CAIRO_STATUS_NO_MEMORY);
} else
data = (RGNDATA *)stack;
data->rdh.dwSize = sizeof (RGNDATAHEADER);
data->rdh.iType = RDH_RECTANGLES;
data->rdh.nCount = num_rects;
data->rdh.nRgnSize = num_rects * sizeof (RECT);
data->rdh.rcBound.left = extents.x;
data->rdh.rcBound.top = extents.y;
data->rdh.rcBound.right = extents.x + extents.width;
data->rdh.rcBound.bottom = extents.y + extents.height;
rects = (RECT *)data->Buffer;
for (i = 0; i < num_rects; i++) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
rects[i].left = rect.x;
rects[i].top = rect.y;
rects[i].right = rect.x + rect.width;
rects[i].bottom = rect.y + rect.height;
}
gdi_region = ExtCreateRegion (NULL, data_size, data);
if ((char *)data != stack)
free (data);
if (!gdi_region)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
/* AND the new region into our DC */
status = CAIRO_STATUS_SUCCESS;
if (ExtSelectClipRgn (surface->win32.dc, gdi_region, RGN_AND) == ERROR)
status = _cairo_win32_print_gdi_error (__FUNCTION__);
DeleteObject (gdi_region);
return status;
}
static cairo_status_t
fixup_unbounded (const cairo_composite_rectangles_t *extents)
{
cairo_image_surface_t *dst = (cairo_image_surface_t *)extents->surface;
pixman_image_t *mask;
int mask_x, mask_y;
if (! _cairo_clip_is_region (extents->clip)) {
cairo_image_surface_t *clip;
clip = get_clip_surface (dst, extents, &mask_x, &mask_y);
if (unlikely (clip->base.status))
return clip->base.status;
mask = pixman_image_ref (clip->pixman_image);
cairo_surface_destroy (&clip->base);
} else {
mask_x = mask_y = 0;
mask = _pixman_image_for_color (CAIRO_COLOR_WHITE);
if (unlikely (mask == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
/* top */
if (extents->bounded.y != extents->unbounded.y) {
int x = extents->unbounded.x;
int y = extents->unbounded.y;
int width = extents->unbounded.width;
int height = extents->bounded.y - y;
pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
mask, NULL, dst->pixman_image,
x - mask_x, y - mask_y,
0, 0,
x, y,
width, height);
}
/* left */
if (extents->bounded.x != extents->unbounded.x) {
int x = extents->unbounded.x;
int y = extents->bounded.y;
int width = extents->bounded.x - x;
int height = extents->bounded.height;
pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
mask, NULL, dst->pixman_image,
x - mask_x, y - mask_y,
0, 0,
x, y,
width, height);
}
/* right */
if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
int x = extents->bounded.x + extents->bounded.width;
int y = extents->bounded.y;
int width = extents->unbounded.x + extents->unbounded.width - x;
int height = extents->bounded.height;
pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
mask, NULL, dst->pixman_image,
x - mask_x, y - mask_y,
0, 0,
x, y,
width, height);
}
/* bottom */
if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
int x = extents->unbounded.x;
int y = extents->bounded.y + extents->bounded.height;
int width = extents->unbounded.width;
int height = extents->unbounded.y + extents->unbounded.height - y;
pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
mask, NULL, dst->pixman_image,
x - mask_x, y - mask_y,
0, 0,
x, y,
width, height);
}
pixman_image_unref (mask);
return CAIRO_STATUS_SUCCESS;
}
cairo_surface_t *
_cairo_clip_get_surface (const cairo_clip_t *clip,
cairo_surface_t *target,
int *tx, int *ty)
{
cairo_surface_t *surface;
cairo_status_t status;
cairo_clip_t *copy, *region;
cairo_clip_path_t *copy_path, *clip_path;
if (clip->num_boxes) {
cairo_path_fixed_t path;
int i;
surface = _cairo_surface_create_scratch (target,
CAIRO_CONTENT_ALPHA,
clip->extents.width,
clip->extents.height,
CAIRO_COLOR_TRANSPARENT);
if (unlikely (surface->status))
return surface;
_cairo_path_fixed_init (&path);
status = CAIRO_STATUS_SUCCESS;
for (i = 0; status == CAIRO_STATUS_SUCCESS && i < clip->num_boxes; i++) {
status = _cairo_path_fixed_add_box (&path, &clip->boxes[i],
-_cairo_fixed_from_int (clip->extents.x),
-_cairo_fixed_from_int (clip->extents.y));
}
if (status == CAIRO_STATUS_SUCCESS)
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_ADD,
&_cairo_pattern_white.base,
&path,
CAIRO_FILL_RULE_WINDING,
1.,
CAIRO_ANTIALIAS_DEFAULT,
NULL);
_cairo_path_fixed_fini (&path);
if (unlikely (status)) {
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
} else {
surface = _cairo_surface_create_scratch (target,
CAIRO_CONTENT_ALPHA,
clip->extents.width,
clip->extents.height,
CAIRO_COLOR_WHITE);
if (unlikely (surface->status))
return surface;
}
copy = _cairo_clip_copy_with_translation (clip,
-clip->extents.x,
-clip->extents.y);
copy_path = copy->path;
copy->path = NULL;
region = copy;
if (! _cairo_clip_is_region (copy))
region = _cairo_clip_copy_region (copy);
status = CAIRO_STATUS_SUCCESS;
clip_path = copy_path;
while (status == CAIRO_STATUS_SUCCESS && clip_path) {
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_IN,
&_cairo_pattern_white.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
region);
clip_path = clip_path->prev;
}
copy->path = copy_path;
_cairo_clip_destroy (copy);
if (region != copy)
_cairo_clip_destroy (region);
if (unlikely (status)) {
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
*tx = clip->extents.x;
*ty = clip->extents.y;
return surface;
}
static cairo_int_status_t
_cairo_shape_mask_compositor_stroke (const cairo_compositor_t *_compositor,
cairo_composite_rectangles_t *extents,
const cairo_path_fixed_t *path,
const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias)
{
cairo_surface_t *mask;
cairo_surface_pattern_t pattern;
cairo_int_status_t status;
cairo_clip_t *clip;
if (! extents->is_bounded)
return CAIRO_INT_STATUS_UNSUPPORTED;
TRACE ((stderr, "%s\n", __FUNCTION__));
mask = _cairo_surface_create_scratch (extents->surface,
CAIRO_CONTENT_ALPHA,
extents->bounded.width,
extents->bounded.height,
NULL);
if (unlikely (mask->status))
return mask->status;
clip = extents->clip;
if (! _cairo_clip_is_region (clip))
clip = _cairo_clip_copy_region (clip);
if (! mask->is_clear) {
status = _cairo_surface_offset_paint (mask,
extents->bounded.x,
extents->bounded.y,
CAIRO_OPERATOR_CLEAR,
&_cairo_pattern_clear.base,
clip);
if (unlikely (status))
goto error;
}
status = _cairo_surface_offset_stroke (mask,
extents->bounded.x,
extents->bounded.y,
CAIRO_OPERATOR_ADD,
&_cairo_pattern_white.base,
path, style, ctm, ctm_inverse,
tolerance, antialias,
clip);
if (unlikely (status))
goto error;
if (clip != extents->clip) {
status = _cairo_clip_combine_with_surface (extents->clip, mask,
extents->bounded.x,
extents->bounded.y);
if (unlikely (status))
goto error;
}
_cairo_pattern_init_for_surface (&pattern, mask);
cairo_matrix_init_translate (&pattern.base.matrix,
-extents->bounded.x,
-extents->bounded.y);
pattern.base.filter = CAIRO_FILTER_NEAREST;
pattern.base.extend = CAIRO_EXTEND_NONE;
if (extents->op == CAIRO_OPERATOR_SOURCE) {
status = _cairo_surface_mask (extents->surface,
CAIRO_OPERATOR_DEST_OUT,
&_cairo_pattern_white.base,
&pattern.base,
clip);
if ((status == CAIRO_INT_STATUS_SUCCESS)) {
status = _cairo_surface_mask (extents->surface,
CAIRO_OPERATOR_ADD,
&extents->source_pattern.base,
&pattern.base,
clip);
}
} else {
status = _cairo_surface_mask (extents->surface,
extents->op,
&extents->source_pattern.base,
&pattern.base,
clip);
}
_cairo_pattern_fini (&pattern.base);
error:
cairo_surface_destroy (mask);
if (clip != extents->clip)
_cairo_clip_destroy (clip);
return status;
}