static cairo_int_status_t
render_glyphs_via_mask (cairo_gl_surface_t *dst,
int dst_x, int dst_y,
cairo_operator_t op,
cairo_surface_t *source,
cairo_composite_glyphs_info_t *info,
cairo_clip_t *clip)
{
cairo_surface_t *mask;
cairo_status_t status;
cairo_bool_t has_component_alpha;
TRACE ((stderr, "%s\n", __FUNCTION__));
/* XXX: For non-CA, this should be CAIRO_CONTENT_ALPHA to save memory */
mask = cairo_gl_surface_create (dst->base.device,
CAIRO_CONTENT_COLOR_ALPHA,
info->extents.width,
info->extents.height);
if (unlikely (mask->status))
return mask->status;
status = render_glyphs ((cairo_gl_surface_t *) mask,
info->extents.x, info->extents.y,
CAIRO_OPERATOR_ADD, NULL,
info, &has_component_alpha, NULL);
if (likely (status == CAIRO_STATUS_SUCCESS)) {
cairo_surface_pattern_t mask_pattern;
cairo_surface_pattern_t source_pattern;
cairo_rectangle_int_t clip_extents;
mask->is_clear = FALSE;
_cairo_pattern_init_for_surface (&mask_pattern, mask);
mask_pattern.base.has_component_alpha = has_component_alpha;
mask_pattern.base.filter = CAIRO_FILTER_NEAREST;
mask_pattern.base.extend = CAIRO_EXTEND_NONE;
cairo_matrix_init_translate (&mask_pattern.base.matrix,
dst_x-info->extents.x, dst_y-info->extents.y);
_cairo_pattern_init_for_surface (&source_pattern, source);
cairo_matrix_init_translate (&source_pattern.base.matrix,
dst_x-info->extents.x, dst_y-info->extents.y);
clip = _cairo_clip_copy (clip);
clip_extents.x = info->extents.x - dst_x;
clip_extents.y = info->extents.y - dst_y;
clip_extents.width = info->extents.width;
clip_extents.height = info->extents.height;
clip = _cairo_clip_intersect_rectangle (clip, &clip_extents);
status = _cairo_surface_mask (&dst->base, op,
&source_pattern.base,
&mask_pattern.base,
clip);
_cairo_clip_destroy (clip);
_cairo_pattern_fini (&mask_pattern.base);
_cairo_pattern_fini (&source_pattern.base);
}
cairo_surface_destroy (mask);
return status;
}
/* Handles compositing with a clip surface when we have to do the operation
* in two pieces and combine them together.
*/
static cairo_status_t
_clip_and_composite_combine (cairo_clip_t *clip,
cairo_operator_t op,
cairo_pattern_t *src,
cairo_draw_func_t draw_func,
void *draw_closure,
cairo_surface_t *dst,
const cairo_rectangle_int16_t *extents)
{
cairo_surface_t *intermediate;
cairo_surface_pattern_t dst_pattern;
cairo_surface_pattern_t intermediate_pattern;
cairo_status_t status;
/* We'd be better off here creating a surface identical in format
* to dst, but we have no way of getting that information.
* A CAIRO_CONTENT_CLONE or something might be useful.
* cairo_surface_create_similar() also unnecessarily clears the surface.
*/
intermediate = cairo_surface_create_similar (dst,
CAIRO_CONTENT_COLOR_ALPHA,
extents->width,
extents->height);
if (intermediate->status)
return CAIRO_STATUS_NO_MEMORY;
/* Initialize the intermediate surface from the destination surface
*/
_cairo_pattern_init_for_surface (&dst_pattern, dst);
status = _cairo_surface_composite (CAIRO_OPERATOR_SOURCE,
&dst_pattern.base, NULL, intermediate,
extents->x, extents->y,
0, 0,
0, 0,
extents->width, extents->height);
_cairo_pattern_fini (&dst_pattern.base);
if (status)
goto CLEANUP_SURFACE;
status = (*draw_func) (draw_closure, op,
src, intermediate,
extents->x, extents->y,
extents);
if (status)
goto CLEANUP_SURFACE;
/* Combine that with the clip
*/
status = _cairo_clip_combine_to_surface (clip, CAIRO_OPERATOR_DEST_IN,
intermediate,
extents->x, extents->y,
extents);
if (status)
goto CLEANUP_SURFACE;
/* Punch the clip out of the destination
*/
status = _cairo_clip_combine_to_surface (clip, CAIRO_OPERATOR_DEST_OUT,
dst,
0, 0,
extents);
if (status)
goto CLEANUP_SURFACE;
/* Now add the two results together
*/
_cairo_pattern_init_for_surface (&intermediate_pattern, intermediate);
status = _cairo_surface_composite (CAIRO_OPERATOR_ADD,
&intermediate_pattern.base, NULL, dst,
0, 0,
0, 0,
extents->x, extents->y,
extents->width, extents->height);
_cairo_pattern_fini (&intermediate_pattern.base);
CLEANUP_SURFACE:
cairo_surface_destroy (intermediate);
return status;
}
/* Composites a region representing a set of trapezoids.
*/
static cairo_status_t
_composite_trap_region (cairo_clip_t *clip,
cairo_pattern_t *src,
cairo_operator_t op,
cairo_surface_t *dst,
pixman_region16_t *trap_region,
cairo_rectangle_int16_t *extents)
{
cairo_status_t status;
cairo_pattern_union_t solid_pattern;
cairo_pattern_union_t mask;
int num_rects = pixman_region_num_rects (trap_region);
unsigned int clip_serial;
cairo_surface_t *clip_surface = clip ? clip->surface : NULL;
if (clip_surface && op == CAIRO_OPERATOR_CLEAR) {
_cairo_pattern_init_solid (&solid_pattern.solid, CAIRO_COLOR_WHITE);
src = &solid_pattern.base;
op = CAIRO_OPERATOR_DEST_OUT;
}
if (num_rects == 0)
return CAIRO_STATUS_SUCCESS;
if (num_rects > 1) {
if (_cairo_surface_get_clip_mode (dst) != CAIRO_CLIP_MODE_REGION)
return CAIRO_INT_STATUS_UNSUPPORTED;
clip_serial = _cairo_surface_allocate_clip_serial (dst);
status = _cairo_surface_set_clip_region (dst,
trap_region,
clip_serial);
if (status)
return status;
}
if (clip_surface)
_cairo_pattern_init_for_surface (&mask.surface, clip_surface);
status = _cairo_surface_composite (op,
src,
clip_surface ? &mask.base : NULL,
dst,
extents->x, extents->y,
extents->x - (clip_surface ? clip->surface_rect.x : 0),
extents->y - (clip_surface ? clip->surface_rect.y : 0),
extents->x, extents->y,
extents->width, extents->height);
/* Restore the original clip if we modified it temporarily. */
if (num_rects >1)
_cairo_surface_set_clip (dst, clip);
if (clip_surface)
_cairo_pattern_fini (&mask.base);
if (src == &solid_pattern.base)
_cairo_pattern_fini (&solid_pattern.base);
return status;
}
cairo_status_t
_cairo_gl_surface_draw_image (cairo_gl_surface_t *dst,
cairo_image_surface_t *src,
int src_x, int src_y,
int width, int height,
int dst_x, int dst_y)
{
GLenum internal_format, format, type;
cairo_bool_t has_alpha, needs_swap;
cairo_image_surface_t *clone = NULL;
cairo_gl_context_t *ctx;
int cpp;
cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
status = _cairo_gl_context_acquire (dst->base.device, &ctx);
if (unlikely (status))
return status;
if (! _cairo_gl_get_image_format_and_type (ctx->gl_flavor,
src->pixman_format,
&internal_format,
&format,
&type,
&has_alpha,
&needs_swap))
{
cairo_bool_t is_supported;
clone = _cairo_image_surface_coerce (src);
if (unlikely (status = clone->base.status))
goto FAIL;
is_supported =
_cairo_gl_get_image_format_and_type (ctx->gl_flavor,
clone->pixman_format,
&internal_format,
&format,
&type,
&has_alpha,
&needs_swap);
assert (is_supported);
assert (!needs_swap);
src = clone;
}
cpp = PIXMAN_FORMAT_BPP (src->pixman_format) / 8;
status = _cairo_gl_surface_flush (&dst->base);
if (unlikely (status))
goto FAIL;
if (_cairo_gl_surface_is_texture (dst)) {
void *data_start = src->data + src_y * src->stride + src_x * cpp;
void *data_start_gles2 = NULL;
/*
* Due to GL_UNPACK_ROW_LENGTH missing in GLES2 we have to extract the
* image data ourselves in some cases. In particular, we must extract
* the pixels if:
* a. we don't want full-length lines or
* b. the row stride cannot be handled by GL itself using a 4 byte
* alignment constraint
*/
if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES &&
(src->width * cpp < src->stride - 3 ||
width != src->width))
{
glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
status = _cairo_gl_surface_extract_image_data (src, src_x, src_y,
width, height,
&data_start_gles2);
if (unlikely (status))
goto FAIL;
data_start = data_start_gles2;
}
else
{
glPixelStorei (GL_UNPACK_ALIGNMENT, 4);
if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
glPixelStorei (GL_UNPACK_ROW_LENGTH, src->stride / cpp);
}
_cairo_gl_context_activate (ctx, CAIRO_GL_TEX_TEMP);
glBindTexture (ctx->tex_target, dst->tex);
glTexParameteri (ctx->tex_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri (ctx->tex_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexSubImage2D (ctx->tex_target, 0,
dst_x, dst_y, width, height,
format, type, data_start);
free (data_start_gles2);
/* If we just treated some rgb-only data as rgba, then we have to
* go back and fix up the alpha channel where we filled in this
* texture data.
*/
if (!has_alpha) {
_cairo_gl_surface_fill_alpha_channel (dst, ctx,
dst_x, dst_y,
width, height);
}
} else {
cairo_surface_t *tmp;
tmp = _cairo_gl_surface_create_scratch (ctx,
dst->base.content,
width, height);
if (unlikely (tmp->status))
goto FAIL;
status = _cairo_gl_surface_draw_image ((cairo_gl_surface_t *) tmp,
src,
src_x, src_y,
width, height,
0, 0);
if (status == CAIRO_INT_STATUS_SUCCESS) {
cairo_surface_pattern_t tmp_pattern;
cairo_rectangle_int_t r;
cairo_clip_t *clip;
_cairo_pattern_init_for_surface (&tmp_pattern, tmp);
cairo_matrix_init_translate (&tmp_pattern.base.matrix,
-dst_x, -dst_y);
tmp_pattern.base.filter = CAIRO_FILTER_NEAREST;
tmp_pattern.base.extend = CAIRO_EXTEND_NONE;
r.x = dst_x;
r.y = dst_y;
r.width = width;
r.height = height;
clip = _cairo_clip_intersect_rectangle (NULL, &r);
status = _cairo_surface_paint (&dst->base,
CAIRO_OPERATOR_SOURCE,
&tmp_pattern.base,
clip);
_cairo_clip_destroy (clip);
_cairo_pattern_fini (&tmp_pattern.base);
}
cairo_surface_destroy (tmp);
}
FAIL:
status = _cairo_gl_context_release (ctx, status);
if (clone)
cairo_surface_destroy (&clone->base);
return status;
}
cairo_warn cairo_int_status_t
_cairo_dwrite_scaled_show_glyphs(void *scaled_font,
cairo_operator_t op,
const cairo_pattern_t *pattern,
cairo_surface_t *generic_surface,
int source_x,
int source_y,
int dest_x,
int dest_y,
unsigned int width,
unsigned int height,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_region_t *clip_region,
int *remaining_glyphs)
{
cairo_win32_surface_t *surface = (cairo_win32_surface_t *)generic_surface;
cairo_int_status_t status;
if (width == 0 || height == 0)
return (cairo_int_status_t)CAIRO_STATUS_SUCCESS;
if (_cairo_surface_is_win32 (generic_surface) &&
surface->format == CAIRO_FORMAT_RGB24 &&
op == CAIRO_OPERATOR_OVER) {
//XXX: we need to set the clip region here
status = (cairo_int_status_t)_cairo_dwrite_show_glyphs_on_surface (surface, op, pattern,
glyphs, num_glyphs,
(cairo_scaled_font_t*)scaled_font, NULL);
return status;
} else {
cairo_dwrite_scaled_font_t *dwritesf =
static_cast<cairo_dwrite_scaled_font_t*>(scaled_font);
UINT16 *indices = new UINT16[num_glyphs];
DWRITE_GLYPH_OFFSET *offsets = new DWRITE_GLYPH_OFFSET[num_glyphs];
FLOAT *advances = new FLOAT[num_glyphs];
BOOL transform = FALSE;
DWRITE_GLYPH_RUN run;
run.bidiLevel = 0;
run.fontFace = ((cairo_dwrite_font_face_t*)dwritesf->base.font_face)->dwriteface;
run.glyphIndices = indices;
run.glyphCount = num_glyphs;
run.isSideways = FALSE;
run.glyphOffsets = offsets;
run.glyphAdvances = advances;
IDWriteGlyphRunAnalysis *analysis;
if (dwritesf->mat.xy == 0 && dwritesf->mat.yx == 0 &&
dwritesf->mat.xx == dwritesf->base.font_matrix.xx &&
dwritesf->mat.yy == dwritesf->base.font_matrix.yy) {
for (int i = 0; i < num_glyphs; i++) {
indices[i] = (WORD) glyphs[i].index;
// Since we will multiply by our ctm matrix later for rotation effects
// and such, adjust positions by the inverse matrix now.
offsets[i].ascenderOffset = (FLOAT)dest_y - (FLOAT)glyphs[i].y;
offsets[i].advanceOffset = (FLOAT)glyphs[i].x - dest_x;
advances[i] = 0.0;
}
run.fontEmSize = (FLOAT)dwritesf->base.font_matrix.yy;
} else {
transform = TRUE;
for (int i = 0; i < num_glyphs; i++) {
indices[i] = (WORD) glyphs[i].index;
double x = glyphs[i].x - dest_x;
double y = glyphs[i].y - dest_y;
cairo_matrix_transform_point(&dwritesf->mat_inverse, &x, &y);
// Since we will multiply by our ctm matrix later for rotation effects
// and such, adjust positions by the inverse matrix now.
offsets[i].ascenderOffset = -(FLOAT)y;
offsets[i].advanceOffset = (FLOAT)x;
advances[i] = 0.0;
}
run.fontEmSize = 1.0f;
}
if (!transform) {
DWriteFactory::Instance()->CreateGlyphRunAnalysis(&run,
1.0f,
NULL,
DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC,
DWRITE_MEASURING_MODE_NATURAL,
0,
0,
&analysis);
} else {
DWRITE_MATRIX dwmatrix = _cairo_dwrite_matrix_from_matrix(&dwritesf->mat);
DWriteFactory::Instance()->CreateGlyphRunAnalysis(&run,
1.0f,
&dwmatrix,
DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC,
DWRITE_MEASURING_MODE_NATURAL,
0,
0,
&analysis);
}
RECT r;
r.left = 0;
r.top = 0;
r.right = width;
r.bottom = height;
BYTE *surface = new BYTE[width * height * 3];
analysis->CreateAlphaTexture(DWRITE_TEXTURE_CLEARTYPE_3x1, &r, surface, width * height * 3);
cairo_image_surface_t *mask_surface =
(cairo_image_surface_t*)cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_surface_flush(&mask_surface->base);
for (unsigned int y = 0; y < height; y++) {
for (unsigned int x = 0; x < width; x++) {
mask_surface->data[y * mask_surface->stride + x * 4] = surface[y * width * 3 + x * 3 + 1];
mask_surface->data[y * mask_surface->stride + x * 4 + 1] = surface[y * width * 3 + x * 3 + 1];
mask_surface->data[y * mask_surface->stride + x * 4 + 2] = surface[y * width * 3 + x * 3 + 1];
mask_surface->data[y * mask_surface->stride + x * 4 + 3] = surface[y * width * 3 + x * 3 + 1];
}
}
cairo_surface_mark_dirty(&mask_surface->base);
pixman_image_set_component_alpha(mask_surface->pixman_image, 1);
cairo_surface_pattern_t mask;
_cairo_pattern_init_for_surface (&mask, &mask_surface->base);
status = (cairo_int_status_t)_cairo_surface_composite (op, pattern,
&mask.base,
generic_surface,
source_x, source_y,
0, 0,
dest_x, dest_y,
width, height,
clip_region);
_cairo_pattern_fini (&mask.base);
analysis->Release();
delete [] surface;
delete [] indices;
delete [] offsets;
delete [] advances;
cairo_surface_destroy (&mask_surface->base);
*remaining_glyphs = 0;
return (cairo_int_status_t)CAIRO_STATUS_SUCCESS;
}
}
static cairo_int_status_t
traps_to_operand (void *_dst,
const cairo_rectangle_int_t *extents,
cairo_antialias_t antialias,
cairo_traps_t *traps,
cairo_gl_operand_t *operand,
int dst_x, int dst_y)
{
pixman_format_code_t pixman_format;
pixman_image_t *pixman_image;
cairo_surface_t *image, *mask;
cairo_surface_pattern_t pattern;
cairo_status_t status;
pixman_format = antialias != CAIRO_ANTIALIAS_NONE ? PIXMAN_a8 : PIXMAN_a1;
pixman_image = pixman_image_create_bits (pixman_format,
extents->width,
extents->height,
NULL, 0);
if (unlikely (pixman_image == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_pixman_image_add_traps (pixman_image, extents->x, extents->y, traps);
image = _cairo_image_surface_create_for_pixman_image (pixman_image,
pixman_format);
if (unlikely (image->status)) {
pixman_image_unref (pixman_image);
return image->status;
}
/* GLES2 only supports RGB/RGBA when uploading */
if (_cairo_gl_get_flavor () == CAIRO_GL_FLAVOR_ES) {
cairo_surface_pattern_t pattern;
cairo_surface_t *rgba_image;
/* XXX perform this fixup inside _cairo_gl_draw_image() */
rgba_image =
_cairo_image_surface_create_with_pixman_format (NULL,
_cairo_is_little_endian () ? PIXMAN_a8b8g8r8 : PIXMAN_r8g8b8a8,
extents->width,
extents->height,
0);
if (unlikely (rgba_image->status))
return rgba_image->status;
_cairo_pattern_init_for_surface (&pattern, image);
status = _cairo_surface_paint (rgba_image, CAIRO_OPERATOR_SOURCE,
&pattern.base, NULL);
_cairo_pattern_fini (&pattern.base);
cairo_surface_destroy (image);
image = rgba_image;
if (unlikely (status)) {
cairo_surface_destroy (image);
return status;
}
}
mask = _cairo_surface_create_similar_scratch (_dst,
CAIRO_CONTENT_COLOR_ALPHA,
extents->width,
extents->height);
if (unlikely (mask->status)) {
cairo_surface_destroy (image);
return mask->status;
}
status = _cairo_gl_surface_draw_image ((cairo_gl_surface_t *)mask,
(cairo_image_surface_t *)image,
0, 0,
extents->width, extents->height,
0, 0);
cairo_surface_destroy (image);
if (unlikely (status))
goto error;
_cairo_pattern_init_for_surface (&pattern, mask);
cairo_matrix_init_translate (&pattern.base.matrix,
-extents->x+dst_x, -extents->y+dst_y);
pattern.base.filter = CAIRO_FILTER_NEAREST;
pattern.base.extend = CAIRO_EXTEND_NONE;
status = _cairo_gl_operand_init (operand, &pattern.base, _dst,
&_cairo_unbounded_rectangle,
&_cairo_unbounded_rectangle);
_cairo_pattern_fini (&pattern.base);
if (unlikely (status))
goto error;
operand->texture.owns_surface = mask;
return CAIRO_STATUS_SUCCESS;
error:
cairo_surface_destroy (mask);
return status;
}
cairo_status_t
_cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font,
cairo_operator_t op,
cairo_pattern_t *pattern,
cairo_surface_t *surface,
int source_x,
int source_y,
int dest_x,
int dest_y,
unsigned int width,
unsigned int height,
const cairo_glyph_t *glyphs,
int num_glyphs)
{
cairo_status_t status;
cairo_surface_t *mask = NULL;
int i;
/* These operators aren't interpreted the same way by the backends;
* they are implemented in terms of other operators in cairo-gstate.c
*/
assert (op != CAIRO_OPERATOR_SOURCE && op != CAIRO_OPERATOR_CLEAR);
if (scaled_font->status)
return scaled_font->status;
if (scaled_font->backend->show_glyphs != NULL) {
status = scaled_font->backend->show_glyphs (scaled_font,
op, pattern,
surface,
source_x, source_y,
dest_x, dest_y,
width, height,
glyphs, num_glyphs);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
/* Font display routine either does not exist or failed. */
status = CAIRO_STATUS_SUCCESS;
_cairo_cache_freeze (scaled_font->glyphs);
for (i = 0; i < num_glyphs; i++) {
int x, y;
cairo_surface_pattern_t glyph_pattern;
cairo_image_surface_t *glyph_surface;
cairo_scaled_glyph_t *scaled_glyph;
status = _cairo_scaled_glyph_lookup (scaled_font,
glyphs[i].index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (status)
goto CLEANUP_MASK;
glyph_surface = scaled_glyph->surface;
/* Create the mask using the format from the first glyph */
if (mask == NULL) {
mask = cairo_image_surface_create (glyph_surface->format,
width, height);
if (mask->status) {
status = mask->status;
goto CLEANUP_MASK;
}
status = _cairo_surface_fill_rectangle (mask,
CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
0, 0,
width, height);
if (status)
goto CLEANUP_MASK;
if (glyph_surface->format == CAIRO_FORMAT_ARGB32)
pixman_image_set_component_alpha (((cairo_image_surface_t*) mask)->
pixman_image, TRUE);
}
/* round glyph locations to the nearest pixel */
x = (int) floor (glyphs[i].x +
glyph_surface->base.device_x_offset +
0.5);
y = (int) floor (glyphs[i].y +
glyph_surface->base.device_y_offset +
0.5);
_cairo_pattern_init_for_surface (&glyph_pattern, &glyph_surface->base);
status = _cairo_surface_composite (CAIRO_OPERATOR_ADD,
&glyph_pattern.base,
NULL,
mask,
0, 0,
0, 0,
x - dest_x,
y - dest_y,
glyph_surface->width,
glyph_surface->height);
_cairo_pattern_fini (&glyph_pattern.base);
if (status)
break;
}
if (mask != NULL) {
cairo_surface_pattern_t mask_pattern;
_cairo_pattern_init_for_surface (&mask_pattern, mask);
status = _cairo_surface_composite (op, pattern, &mask_pattern.base,
surface,
source_x, source_y,
0, 0,
dest_x, dest_y,
width, height);
_cairo_pattern_fini (&mask_pattern.base);
}
CLEANUP_MASK:
_cairo_cache_thaw (scaled_font->glyphs);
if (mask != NULL)
cairo_surface_destroy (mask);
return status;
}
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;
}
static cairo_int_status_t
_cairo_tee_surface_show_text_glyphs (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const char *utf8,
int utf8_len,
cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_text_cluster_t *clusters,
int num_clusters,
cairo_text_cluster_flags_t cluster_flags,
cairo_scaled_font_t *scaled_font,
cairo_clip_t *clip)
{
cairo_tee_surface_t *surface = abstract_surface;
cairo_surface_wrapper_t *slaves;
int n, num_slaves;
cairo_status_t status;
cairo_glyph_t *glyphs_copy;
const cairo_pattern_t *matched_source;
cairo_surface_pattern_t temp;
/* XXX: This copying is ugly. */
glyphs_copy = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
if (unlikely (glyphs_copy == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
matched_source = _cairo_tee_surface_match_source (surface, source, 0, &surface->master, &temp);
status = _cairo_surface_wrapper_show_text_glyphs (&surface->master, op,
matched_source,
utf8, utf8_len,
glyphs_copy, num_glyphs,
clusters, num_clusters,
cluster_flags,
scaled_font,
clip);
if (matched_source == &temp.base) {
_cairo_pattern_fini (&temp.base);
}
if (unlikely (status))
goto CLEANUP;
num_slaves = _cairo_array_num_elements (&surface->slaves);
slaves = _cairo_array_index (&surface->slaves, 0);
for (n = 0; n < num_slaves; n++) {
memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
matched_source = _cairo_tee_surface_match_source (surface, source, n + 1, &slaves[n], &temp);
status = _cairo_surface_wrapper_show_text_glyphs (&slaves[n], op,
matched_source,
utf8, utf8_len,
glyphs_copy, num_glyphs,
clusters, num_clusters,
cluster_flags,
scaled_font,
clip);
if (matched_source == &temp.base) {
_cairo_pattern_fini (&temp.base);
}
if (unlikely (status))
goto CLEANUP;
}
CLEANUP:
free (glyphs_copy);
return status;
}
static cairo_int_status_t
_cairo_meta_surface_show_text_glyphs (void *abstract_surface,
cairo_operator_t op,
cairo_pattern_t *source,
const char *utf8,
int utf8_len,
cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_text_cluster_t *clusters,
int num_clusters,
cairo_text_cluster_flags_t cluster_flags,
cairo_scaled_font_t *scaled_font)
{
cairo_status_t status;
cairo_meta_surface_t *meta = abstract_surface;
cairo_command_show_text_glyphs_t *command;
command = malloc (sizeof (cairo_command_show_text_glyphs_t));
if (command == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
command->header.type = CAIRO_COMMAND_SHOW_TEXT_GLYPHS;
command->header.region = CAIRO_META_REGION_ALL;
command->op = op;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
if (status)
goto CLEANUP_COMMAND;
command->utf8 = NULL;
command->utf8_len = utf8_len;
command->glyphs = NULL;
command->num_glyphs = num_glyphs;
command->clusters = NULL;
command->num_clusters = num_clusters;
if (utf8_len) {
command->utf8 = malloc (utf8_len);
if (command->utf8 == NULL) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_ARRAYS;
}
memcpy (command->utf8, utf8, utf8_len);
}
if (num_glyphs) {
command->glyphs = _cairo_malloc_ab (num_glyphs, sizeof (glyphs[0]));
if (command->glyphs == NULL) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_ARRAYS;
}
memcpy (command->glyphs, glyphs, sizeof (glyphs[0]) * num_glyphs);
}
if (num_clusters) {
command->clusters = _cairo_malloc_ab (num_clusters, sizeof (clusters[0]));
if (command->clusters == NULL) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_ARRAYS;
}
memcpy (command->clusters, clusters, sizeof (clusters[0]) * num_clusters);
}
command->cluster_flags = cluster_flags;
command->scaled_font = cairo_scaled_font_reference (scaled_font);
status = _cairo_array_append (&meta->commands, &command);
if (status)
goto CLEANUP_SCALED_FONT;
return CAIRO_STATUS_SUCCESS;
CLEANUP_SCALED_FONT:
cairo_scaled_font_destroy (command->scaled_font);
CLEANUP_ARRAYS:
free (command->utf8);
free (command->glyphs);
free (command->clusters);
_cairo_pattern_fini (&command->source.base);
CLEANUP_COMMAND:
free (command);
return status;
}
static cairo_status_t
_cairo_meta_surface_finish (void *abstract_surface)
{
cairo_meta_surface_t *meta = abstract_surface;
cairo_command_t *command;
cairo_command_t **elements;
int i, num_elements;
if (meta->commands_owner) {
cairo_surface_destroy (meta->commands_owner);
return CAIRO_STATUS_SUCCESS;
}
num_elements = meta->commands.num_elements;
elements = _cairo_array_index (&meta->commands, 0);
for (i = 0; i < num_elements; i++) {
command = elements[i];
switch (command->header.type) {
/* 5 basic drawing operations */
case CAIRO_COMMAND_PAINT:
_cairo_pattern_fini (&command->paint.source.base);
free (command);
break;
case CAIRO_COMMAND_MASK:
_cairo_pattern_fini (&command->mask.source.base);
_cairo_pattern_fini (&command->mask.mask.base);
free (command);
break;
case CAIRO_COMMAND_STROKE:
_cairo_pattern_fini (&command->stroke.source.base);
_cairo_path_fixed_fini (&command->stroke.path);
_cairo_stroke_style_fini (&command->stroke.style);
free (command);
break;
case CAIRO_COMMAND_FILL:
_cairo_pattern_fini (&command->fill.source.base);
_cairo_path_fixed_fini (&command->fill.path);
free (command);
break;
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
_cairo_pattern_fini (&command->show_text_glyphs.source.base);
free (command->show_text_glyphs.utf8);
free (command->show_text_glyphs.glyphs);
free (command->show_text_glyphs.clusters);
cairo_scaled_font_destroy (command->show_text_glyphs.scaled_font);
free (command);
break;
/* Other junk. */
case CAIRO_COMMAND_INTERSECT_CLIP_PATH:
if (command->intersect_clip_path.path_pointer)
_cairo_path_fixed_fini (&command->intersect_clip_path.path);
free (command);
break;
default:
ASSERT_NOT_REACHED;
}
}
_cairo_array_fini (&meta->commands);
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
_cairo_clip_combine_with_surface (cairo_clip_t *clip,
cairo_surface_t *dst,
const cairo_rectangle_int_t *extents)
{
cairo_pattern_union_t pattern;
cairo_clip_path_t *clip_path = clip->path;
cairo_bool_t need_translate;
cairo_status_t status;
assert (clip_path != NULL);
if (clip_path->surface != NULL &&
clip_path->surface->backend == dst->backend)
{
_cairo_pattern_init_for_surface (&pattern.surface,
clip_path->surface);
cairo_matrix_init_translate (&pattern.base.matrix,
extents->x - clip_path->extents.x,
extents->y - clip_path->extents.y);
status = _cairo_surface_paint (dst,
CAIRO_OPERATOR_IN,
&pattern.base,
NULL);
_cairo_pattern_fini (&pattern.base);
return status;
}
_cairo_pattern_init_solid (&pattern.solid,
CAIRO_COLOR_WHITE,
CAIRO_CONTENT_COLOR);
need_translate = extents->x | extents->y;
do {
status = _cairo_clip_path_to_region (clip_path);
if (unlikely (_cairo_status_is_error (status)))
return status;
if (status == CAIRO_STATUS_SUCCESS)
return _combine_region (dst, clip_path->region, extents);
if (clip_path->surface != NULL &&
clip_path->surface->backend == dst->backend)
{
_cairo_pattern_init_for_surface (&pattern.surface,
clip_path->surface);
cairo_matrix_init_translate (&pattern.base.matrix,
extents->x - clip_path->extents.x,
extents->y - clip_path->extents.y);
status = _cairo_surface_paint (dst,
CAIRO_OPERATOR_IN,
&pattern.base,
NULL);
_cairo_pattern_fini (&pattern.base);
return status;
}
if (clip_path->flags & CAIRO_CLIP_PATH_IS_BOX) {
cairo_region_t clip_region;
_cairo_region_init_rectangle (&clip_region, &clip_path->extents);
status = _combine_region (dst, &clip_region, extents);
} else {
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (-extents->x),
_cairo_fixed_from_int (-extents->y));
}
status = _cairo_surface_fill (dst,
CAIRO_OPERATOR_IN,
&pattern.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
NULL);
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (extents->x),
_cairo_fixed_from_int (extents->y));
}
}
if (unlikely (status))
return status;
} while ((clip_path = clip_path->prev) != NULL);
return CAIRO_STATUS_SUCCESS;
}
static cairo_surface_t *
_cairo_clip_path_get_surface (cairo_clip_path_t *clip_path,
cairo_surface_t *target)
{
cairo_surface_t *surface;
cairo_pattern_union_t pattern;
cairo_status_t status;
const cairo_rectangle_int_t *clip_extents = &clip_path->extents;
cairo_clip_path_t *prev;
cairo_bool_t need_translate;
if (clip_path->surface != NULL &&
clip_path->surface->backend == target->backend)
{
return cairo_surface_reference (clip_path->surface);
}
surface = _cairo_surface_create_similar_solid (target,
CAIRO_CONTENT_ALPHA,
clip_extents->width,
clip_extents->height,
CAIRO_COLOR_TRANSPARENT,
FALSE);
if (surface == NULL) {
if (clip_path->surface != NULL &&
clip_path->surface->backend == &_cairo_image_surface_backend)
{
return cairo_surface_reference (clip_path->surface);
}
surface =
_cairo_image_surface_create_with_content (CAIRO_CONTENT_ALPHA,
clip_extents->width,
clip_extents->height);
}
if (unlikely (surface->status))
return surface;
_cairo_pattern_init_solid (&pattern.solid,
CAIRO_COLOR_WHITE,
CAIRO_CONTENT_COLOR);
status = _cairo_clip_path_to_region (clip_path);
if (unlikely (_cairo_status_is_error (status)))
goto BAIL;
need_translate = clip_extents->x | clip_extents->y;
if (status == CAIRO_STATUS_SUCCESS) {
if (need_translate) {
cairo_region_translate (clip_path->region,
-clip_extents->x, -clip_extents->y);
}
status = _cairo_surface_fill_region (surface,
CAIRO_OPERATOR_SOURCE,
CAIRO_COLOR_WHITE,
clip_path->region);
if (need_translate) {
cairo_region_translate (clip_path->region,
clip_extents->x, clip_extents->y);
}
if (unlikely (status))
goto BAIL;
goto DONE;
} else {
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (-clip_extents->x),
_cairo_fixed_from_int (-clip_extents->y));
}
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_OVER,
&pattern.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
NULL);
if (need_translate) {
_cairo_path_fixed_translate (&clip_path->path,
_cairo_fixed_from_int (clip_extents->x),
_cairo_fixed_from_int (clip_extents->y));
}
if (unlikely (status))
goto BAIL;
}
prev = clip_path->prev;
NEXT_PATH:
if (prev != NULL) {
status = _cairo_clip_path_to_region (prev);
if (unlikely (_cairo_status_is_error (status)))
goto BAIL;
if (status == CAIRO_STATUS_SUCCESS) {
status = _combine_region (surface, prev->region, clip_extents);
if (unlikely (status))
goto BAIL;
} else if (prev->flags & CAIRO_CLIP_PATH_IS_BOX) {
/* a simple box only affects the extents */
} else if (prev->path.is_rectilinear) {
if (need_translate) {
_cairo_path_fixed_translate (&prev->path,
_cairo_fixed_from_int (-clip_extents->x),
_cairo_fixed_from_int (-clip_extents->y));
}
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_IN,
&pattern.base,
&prev->path,
prev->fill_rule,
prev->tolerance,
prev->antialias,
NULL);
if (need_translate) {
_cairo_path_fixed_translate (&prev->path,
_cairo_fixed_from_int (clip_extents->x),
_cairo_fixed_from_int (clip_extents->y));
}
if (unlikely (status))
goto BAIL;
prev = prev->prev;
goto NEXT_PATH;
} else {
cairo_surface_t *prev_surface;
prev_surface = _cairo_clip_path_get_surface (prev, target);
_cairo_pattern_init_for_surface (&pattern.surface, prev_surface);
cairo_surface_destroy (prev_surface);
cairo_matrix_init_translate (&pattern.base.matrix,
-prev->extents.x + clip_extents->x,
-prev->extents.y + clip_extents->y);
status = _cairo_surface_paint (surface,
CAIRO_OPERATOR_IN,
&pattern.base,
NULL);
_cairo_pattern_fini (&pattern.base);
if (unlikely (status))
goto BAIL;
}
}
DONE:
cairo_surface_destroy (clip_path->surface);
return clip_path->surface = cairo_surface_reference (surface);
BAIL:
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
static cairo_status_t
_cairo_clip_intersect_mask (cairo_clip_t *clip,
cairo_traps_t *traps,
cairo_antialias_t antialias,
cairo_surface_t *target)
{
cairo_pattern_union_t pattern;
cairo_box_t extents;
cairo_rectangle_t surface_rect, target_rect;
cairo_surface_t *surface;
cairo_status_t status;
/* Represent the clip as a mask surface. We create a new surface
* the size of the intersection of the old mask surface and the
* extents of the new clip path. */
_cairo_traps_extents (traps, &extents);
_cairo_box_round_to_rectangle (&extents, &surface_rect);
if (clip->surface != NULL)
_cairo_rectangle_intersect (&surface_rect, &clip->surface_rect);
/* Intersect with the target surface rectangle so we don't use
* more memory and time than we need to. */
status = _cairo_surface_get_extents (target, &target_rect);
if (!status)
_cairo_rectangle_intersect (&surface_rect, &target_rect);
surface = _cairo_surface_create_similar_solid (target,
CAIRO_CONTENT_ALPHA,
surface_rect.width,
surface_rect.height,
CAIRO_COLOR_WHITE);
if (surface->status)
return CAIRO_STATUS_NO_MEMORY;
/* Render the new clipping path into the new mask surface. */
_cairo_traps_translate (traps, -surface_rect.x, -surface_rect.y);
_cairo_pattern_init_solid (&pattern.solid, CAIRO_COLOR_WHITE);
status = _cairo_surface_composite_trapezoids (CAIRO_OPERATOR_IN,
&pattern.base,
surface,
antialias,
0, 0,
0, 0,
surface_rect.width,
surface_rect.height,
traps->traps,
traps->num_traps);
_cairo_pattern_fini (&pattern.base);
if (status) {
cairo_surface_destroy (surface);
return status;
}
/* If there was a clip surface already, combine it with the new
* mask surface using the IN operator, so we get the intersection
* of the old and new clipping paths. */
if (clip->surface != NULL) {
_cairo_pattern_init_for_surface (&pattern.surface, clip->surface);
status = _cairo_surface_composite (CAIRO_OPERATOR_IN,
&pattern.base,
NULL,
surface,
surface_rect.x - clip->surface_rect.x,
surface_rect.y - clip->surface_rect.y,
0, 0,
0, 0,
surface_rect.width,
surface_rect.height);
_cairo_pattern_fini (&pattern.base);
if (status) {
cairo_surface_destroy (surface);
return status;
}
cairo_surface_destroy (clip->surface);
}
clip->surface = surface;
clip->surface_rect = surface_rect;
clip->serial = _cairo_surface_allocate_clip_serial (target);
return status;
}
