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pdf; Emit subsurface patterns natively.

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Encode subsurface patterns into the PDF stream natively (when possible),
similar to the cairo-ps backend.
This commit is contained in:
Chris Wilson 2010-04-30 10:13:09 +01:00
parent 8ded35fd69
commit 5fe7c5842f
1 changed files with 94 additions and 19 deletions
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113
src/cairo-pdf-surface.c
View file

@ -53,6 +53,7 @@
#include "cairo-paginated-private.h"
#include "cairo-scaled-font-subsets-private.h"
#include "cairo-surface-clipper-private.h"
#include "cairo-surface-subsurface-private.h"
#include "cairo-type3-glyph-surface-private.h"
#include <time.h>
@ -1051,18 +1052,26 @@ _get_source_surface_size (cairo_surface_t *source,
const unsigned char *mime_data;
unsigned int mime_data_length;
if (_cairo_surface_is_recording (source)) {
cairo_recording_surface_t *recording_surface = (cairo_recording_surface_t *) source;
cairo_box_t bbox;
if (source->type == CAIRO_SURFACE_TYPE_RECORDING) {
if (source->backend->type == CAIRO_INTERNAL_SURFACE_TYPE_SUBSURFACE) {
cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) source;
status = _cairo_recording_surface_get_bbox (recording_surface, &bbox, NULL);
if (unlikely (status))
return status;
*width = sub->extents.width;
*height = sub->extents.height;
_cairo_box_round_to_rectangle (&bbox, &extents);
} else {
cairo_recording_surface_t *recording_surface = (cairo_recording_surface_t *) source;
cairo_box_t bbox;
*width = extents.width;
*height = extents.height;
status = _cairo_recording_surface_get_bbox (recording_surface, &bbox, NULL);
if (unlikely (status))
return status;
_cairo_box_round_to_rectangle (&bbox, &extents);
*width = extents.width;
*height = extents.height;
}
return CAIRO_STATUS_SUCCESS;
}
@ -2242,14 +2251,80 @@ _cairo_pdf_surface_emit_recording_surface (cairo_pdf_surface_t *surface,
return status;
}
static cairo_status_t
_cairo_pdf_surface_emit_recording_subsurface (cairo_pdf_surface_t *surface,
cairo_surface_t *recording_surface,
const cairo_rectangle_int_t *extents,
cairo_pdf_resource_t resource)
{
double old_width, old_height;
cairo_paginated_mode_t old_paginated_mode;
cairo_status_t status;
int alpha = 0;
old_width = surface->width;
old_height = surface->height;
old_paginated_mode = surface->paginated_mode;
_cairo_pdf_surface_set_size_internal (surface,
extents->width,
extents->height);
/* Patterns are emitted after fallback images. The paginated mode
* needs to be set to _RENDER while the recording surface is replayed
* back to this surface.
*/
surface->paginated_mode = CAIRO_PAGINATED_MODE_RENDER;
_cairo_pdf_group_resources_clear (&surface->resources);
status = _cairo_pdf_surface_open_content_stream (surface, &resource, TRUE);
if (unlikely (status))
return status;
if (cairo_surface_get_content (recording_surface) == CAIRO_CONTENT_COLOR) {
status = _cairo_pdf_surface_add_alpha (surface, 1.0, &alpha);
if (unlikely (status))
return status;
_cairo_output_stream_printf (surface->output,
"q /a%d gs 0 0 0 rg 0 0 %f %f re f Q\n",
alpha,
surface->width,
surface->height);
}
status = _cairo_recording_surface_replay_region (recording_surface,
extents,
&surface->base,
CAIRO_RECORDING_REGION_NATIVE);
assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
if (unlikely (status))
return status;
status = _cairo_pdf_surface_close_content_stream (surface);
_cairo_pdf_surface_set_size_internal (surface,
old_width,
old_height);
surface->paginated_mode = old_paginated_mode;
return status;
}
static cairo_status_t
_cairo_pdf_surface_emit_surface (cairo_pdf_surface_t *surface,
cairo_pdf_source_surface_t *src_surface)
{
if (_cairo_surface_is_recording (src_surface->surface)) {
return _cairo_pdf_surface_emit_recording_surface (surface,
src_surface->surface,
src_surface->hash_entry->surface_res);
if (src_surface->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
if (src_surface->surface->backend->type == CAIRO_INTERNAL_SURFACE_TYPE_SUBSURFACE) {
cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) src_surface->surface;
return _cairo_pdf_surface_emit_recording_subsurface (surface,
sub->target,
&sub->extents,
src_surface->hash_entry->surface_res);
} else {
return _cairo_pdf_surface_emit_recording_surface (surface,
src_surface->surface,
src_surface->hash_entry->surface_res);
}
} else {
return _cairo_pdf_surface_emit_image_surface (surface,
src_surface->surface,
@ -2276,7 +2351,7 @@ _cairo_pdf_surface_emit_surface_pattern (cairo_pdf_surface_t *surface,
char draw_surface[200];
if (pattern->base.extend == CAIRO_EXTEND_PAD &&
! _cairo_surface_is_recording (pattern->surface))
pattern->surface->type != CAIRO_SURFACE_TYPE_RECORDING)
{
status = _cairo_pdf_surface_emit_padded_image_surface (surface,
pdf_pattern,
@ -2407,7 +2482,7 @@ _cairo_pdf_surface_emit_surface_pattern (cairo_pdf_surface_t *surface,
if (unlikely (status))
return status;
if (_cairo_surface_is_recording (pattern->surface)) {
if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
snprintf(draw_surface,
sizeof (draw_surface),
"/x%d Do\n",
@ -3278,7 +3353,7 @@ _cairo_pdf_surface_paint_surface_pattern (cairo_pdf_surface_t *surface,
cairo_matrix_multiply (&pdf_p2d, &cairo_p2d, &pdf_p2d);
cairo_matrix_translate (&pdf_p2d, 0.0, height);
cairo_matrix_scale (&pdf_p2d, 1.0, -1.0);
if (! _cairo_surface_is_recording (source->surface))
if (source->surface->type != CAIRO_SURFACE_TYPE_RECORDING)
cairo_matrix_scale (&pdf_p2d, width, height);
status = _cairo_pdf_operators_flush (&surface->pdf_operators);
@ -5076,7 +5151,7 @@ _surface_pattern_supported (cairo_surface_pattern_t *pattern)
{
cairo_extend_t extend;
if (_cairo_surface_is_recording (pattern->surface))
if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
return TRUE;
if (pattern->surface->backend->acquire_source_image == NULL)
@ -5216,7 +5291,7 @@ _cairo_pdf_surface_analyze_operation (cairo_pdf_surface_t *surface,
if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
if ( _cairo_surface_is_recording (surface_pattern->surface)) {
if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
if (pattern->extend == CAIRO_EXTEND_PAD)
return CAIRO_INT_STATUS_UNSUPPORTED;
else
@ -5234,7 +5309,7 @@ _cairo_pdf_surface_analyze_operation (cairo_pdf_surface_t *surface,
if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
if (_cairo_surface_is_recording (surface_pattern->surface)) {
if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
if (_cairo_pattern_is_opaque (pattern, extents)) {
return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
} else {