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Diffstat (limited to 'src/cairo-pdf-surface.c')
-rw-r--r--src/cairo-pdf-surface.c125
1 files changed, 92 insertions, 33 deletions
diff --git a/src/cairo-pdf-surface.c b/src/cairo-pdf-surface.c
index 6580d5b69..9ff15031d 100644
--- a/src/cairo-pdf-surface.c
+++ b/src/cairo-pdf-surface.c
@@ -1282,6 +1282,7 @@ _get_source_surface_size (cairo_surface_t *source,
* @surface: the pdf surface
* @source_surface: A #cairo_surface_t to use as the source surface
* @source_pattern: A #cairo_pattern_t of type SURFACE or RASTER_SOURCE to use as the source
+ * @op: the operator used to composite this source
* @filter: filter type of the source pattern
* @stencil_mask: if true, the surface will be written to the PDF as an /ImageMask
* @extents: extents of the operation that is using this source
@@ -1306,6 +1307,7 @@ static cairo_int_status_t
_cairo_pdf_surface_add_source_surface (cairo_pdf_surface_t *surface,
cairo_surface_t *source_surface,
const cairo_pattern_t *source_pattern,
+ cairo_operator_t op,
cairo_filter_t filter,
cairo_bool_t stencil_mask,
const cairo_rectangle_int_t *extents,
@@ -1406,6 +1408,7 @@ release_source:
}
surface_entry->id = surface_key.id;
+ surface_entry->operator = op;
surface_entry->interpolate = interpolate;
surface_entry->stencil_mask = stencil_mask;
surface_entry->unique_id_length = unique_id_length;
@@ -1466,6 +1469,7 @@ fail1:
static cairo_int_status_t
_cairo_pdf_surface_add_pdf_pattern_or_shading (cairo_pdf_surface_t *surface,
const cairo_pattern_t *pattern,
+ cairo_operator_t op,
const cairo_rectangle_int_t *extents,
cairo_bool_t is_shading,
cairo_pdf_resource_t *pattern_res,
@@ -1475,6 +1479,7 @@ _cairo_pdf_surface_add_pdf_pattern_or_shading (cairo_pdf_surface_t *surface,
cairo_int_status_t status;
pdf_pattern.is_shading = is_shading;
+ pdf_pattern.operator = op;
/* Solid colors are emitted into the content stream */
if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
@@ -1550,12 +1555,14 @@ _get_bbox_from_extents (double surface_height,
static cairo_int_status_t
_cairo_pdf_surface_add_pdf_shading (cairo_pdf_surface_t *surface,
const cairo_pattern_t *pattern,
+ cairo_operator_t op,
const cairo_rectangle_int_t *extents,
cairo_pdf_resource_t *shading_res,
cairo_pdf_resource_t *gstate_res)
{
return _cairo_pdf_surface_add_pdf_pattern_or_shading (surface,
pattern,
+ op,
extents,
TRUE,
shading_res,
@@ -1565,12 +1572,14 @@ _cairo_pdf_surface_add_pdf_shading (cairo_pdf_surface_t *surface,
static cairo_int_status_t
_cairo_pdf_surface_add_pdf_pattern (cairo_pdf_surface_t *surface,
const cairo_pattern_t *pattern,
+ cairo_operator_t op,
const cairo_rectangle_int_t *extents,
cairo_pdf_resource_t *pattern_res,
cairo_pdf_resource_t *gstate_res)
{
return _cairo_pdf_surface_add_pdf_pattern_or_shading (surface,
pattern,
+ op,
extents,
FALSE,
pattern_res,
@@ -1846,7 +1855,8 @@ static cairo_int_status_t
_cairo_pdf_surface_open_content_stream (cairo_pdf_surface_t *surface,
const cairo_box_double_t *bbox,
cairo_pdf_resource_t *resource,
- cairo_bool_t is_form)
+ cairo_bool_t is_form,
+ cairo_bool_t is_group)
{
cairo_int_status_t status;
@@ -1860,25 +1870,41 @@ _cairo_pdf_surface_open_content_stream (cairo_pdf_surface_t *surface,
if (is_form) {
assert (bbox != NULL);
- status =
- _cairo_pdf_surface_open_stream (surface,
- resource,
- surface->compress_content,
- " /Type /XObject\n"
- " /Subtype /Form\n"
- " /BBox [ %f %f %f %f ]\n"
- " /Group <<\n"
- " /Type /Group\n"
- " /S /Transparency\n"
- " /I true\n"
- " /CS /DeviceRGB\n"
- " >>\n"
- " /Resources %d 0 R\n",
- bbox->p1.x,
- bbox->p1.y,
- bbox->p2.x,
- bbox->p2.y,
- surface->content_resources.id);
+ if (is_group) {
+ status =
+ _cairo_pdf_surface_open_stream (surface,
+ resource,
+ surface->compress_content,
+ " /Type /XObject\n"
+ " /Subtype /Form\n"
+ " /BBox [ %f %f %f %f ]\n"
+ " /Group <<\n"
+ " /Type /Group\n"
+ " /S /Transparency\n"
+ " /I true\n"
+ " /CS /DeviceRGB\n"
+ " >>\n"
+ " /Resources %d 0 R\n",
+ bbox->p1.x,
+ bbox->p1.y,
+ bbox->p2.x,
+ bbox->p2.y,
+ surface->content_resources.id);
+ } else {
+ status =
+ _cairo_pdf_surface_open_stream (surface,
+ resource,
+ surface->compress_content,
+ " /Type /XObject\n"
+ " /Subtype /Form\n"
+ " /BBox [ %f %f %f %f ]\n"
+ " /Resources %d 0 R\n",
+ bbox->p1.x,
+ bbox->p1.y,
+ bbox->p2.x,
+ bbox->p2.y,
+ surface->content_resources.id);
+ }
} else {
status =
_cairo_pdf_surface_open_stream (surface,
@@ -2079,7 +2105,7 @@ _cairo_pdf_surface_has_fallback_images (void *abstract_surface,
bbox.p1.y = 0;
bbox.p2.x = surface->width;
bbox.p2.y = surface->height;
- status = _cairo_pdf_surface_open_content_stream (surface, &bbox, NULL, has_fallbacks);
+ status = _cairo_pdf_surface_open_content_stream (surface, &bbox, NULL, has_fallbacks, has_fallbacks);
if (unlikely (status))
return status;
@@ -2154,6 +2180,7 @@ _cairo_pdf_surface_add_padded_image_surface (cairo_pdf_surface_t *surfa
status = _cairo_pdf_surface_add_source_surface (surface,
pad_image,
NULL,
+ FALSE,
source->filter,
FALSE,
extents,
@@ -2686,6 +2713,8 @@ _cairo_pdf_surface_emit_recording_surface (cairo_pdf_surface_t *surface,
int width;
int height;
cairo_bool_t is_subsurface;
+ cairo_bool_t transparency_group;
+ cairo_recording_surface_t *recording;
assert (pdf_source->type == CAIRO_PATTERN_TYPE_SURFACE);
extents = &pdf_source->hash_entry->extents;
@@ -2705,6 +2734,9 @@ _cairo_pdf_surface_emit_recording_surface (cairo_pdf_surface_t *surface,
is_subsurface = TRUE;
}
+ assert (source->type == CAIRO_SURFACE_TYPE_RECORDING);
+ recording = (cairo_recording_surface_t *) source;
+
old_width = surface->width;
old_height = surface->height;
old_paginated_mode = surface->paginated_mode;
@@ -2721,7 +2753,16 @@ _cairo_pdf_surface_emit_recording_surface (cairo_pdf_surface_t *surface,
surface->paginated_mode = CAIRO_PAGINATED_MODE_RENDER;
_cairo_pdf_group_resources_clear (&surface->resources);
_get_bbox_from_extents (height, extents, &bbox);
- status = _cairo_pdf_surface_open_content_stream (surface, &bbox, &pdf_source->hash_entry->surface_res, TRUE);
+
+ /* We can optimize away the transparency group allowing the viewer
+ * to replay the group in place when all operators are OVER and the
+ * recording contains only opaque and/or clear alpha.
+ */
+ transparency_group = !(pdf_source->hash_entry->operator == CAIRO_OPERATOR_OVER &&
+ _cairo_recording_surface_has_only_bilevel_alpha (recording) &&
+ _cairo_recording_surface_has_only_op_over (recording));
+ status = _cairo_pdf_surface_open_content_stream (surface, &bbox, &pdf_source->hash_entry->surface_res,
+ TRUE, transparency_group);
if (unlikely (status))
goto err;
@@ -2805,6 +2846,7 @@ _cairo_pdf_surface_emit_surface_pattern (cairo_pdf_surface_t *surface,
status = _cairo_pdf_surface_add_source_surface (surface,
NULL,
pattern,
+ pdf_pattern->operator,
pattern->filter,
FALSE,
&pdf_pattern->extents,
@@ -3909,6 +3951,7 @@ _cairo_pdf_surface_emit_pattern (cairo_pdf_surface_t *surface, cairo_pdf_pattern
static cairo_int_status_t
_cairo_pdf_surface_paint_surface_pattern (cairo_pdf_surface_t *surface,
+ cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_rectangle_int_t *extents,
cairo_bool_t stencil_mask)
@@ -3938,6 +3981,7 @@ _cairo_pdf_surface_paint_surface_pattern (cairo_pdf_surface_t *surface,
status = _cairo_pdf_surface_add_source_surface (surface,
NULL,
source,
+ op,
source->filter,
stencil_mask,
extents,
@@ -3999,6 +4043,7 @@ _cairo_pdf_surface_paint_surface_pattern (cairo_pdf_surface_t *surface,
static cairo_int_status_t
_cairo_pdf_surface_paint_gradient (cairo_pdf_surface_t *surface,
+ cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_rectangle_int_t *extents)
{
@@ -4008,7 +4053,7 @@ _cairo_pdf_surface_paint_gradient (cairo_pdf_surface_t *surface,
int alpha;
status = _cairo_pdf_surface_add_pdf_shading (surface, source,
- extents,
+ op, extents,
&shading_res, &gstate_res);
if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO))
return CAIRO_INT_STATUS_SUCCESS;
@@ -4062,6 +4107,7 @@ _cairo_pdf_surface_paint_gradient (cairo_pdf_surface_t *surface,
static cairo_int_status_t
_cairo_pdf_surface_paint_pattern (cairo_pdf_surface_t *surface,
+ cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_rectangle_int_t *extents,
cairo_bool_t mask)
@@ -4070,6 +4116,7 @@ _cairo_pdf_surface_paint_pattern (cairo_pdf_surface_t *surface,
case CAIRO_PATTERN_TYPE_SURFACE:
case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
return _cairo_pdf_surface_paint_surface_pattern (surface,
+ op,
source,
extents,
mask);
@@ -4077,6 +4124,7 @@ _cairo_pdf_surface_paint_pattern (cairo_pdf_surface_t *surface,
case CAIRO_PATTERN_TYPE_RADIAL:
case CAIRO_PATTERN_TYPE_MESH:
return _cairo_pdf_surface_paint_gradient (surface,
+ op,
source,
extents);
@@ -5701,6 +5749,7 @@ _cairo_pdf_surface_write_mask_group (cairo_pdf_surface_t *surface,
if (_can_paint_pattern (group->mask)) {
_cairo_output_stream_printf (surface->output, "q\n");
status = _cairo_pdf_surface_paint_pattern (surface,
+ CAIRO_OPERATOR_OVER,
group->mask,
&group->extents,
FALSE);
@@ -5711,7 +5760,9 @@ _cairo_pdf_surface_write_mask_group (cairo_pdf_surface_t *surface,
} else {
pattern_res.id = 0;
gstate_res.id = 0;
- status = _cairo_pdf_surface_add_pdf_pattern (surface, group->mask, NULL,
+ status = _cairo_pdf_surface_add_pdf_pattern (surface, group->mask,
+ CAIRO_OPERATOR_OVER,
+ NULL,
&pattern_res, &gstate_res);
if (unlikely (status))
return status;
@@ -5774,6 +5825,7 @@ _cairo_pdf_surface_write_mask_group (cairo_pdf_surface_t *surface,
if (_can_paint_pattern (group->source)) {
_cairo_output_stream_printf (surface->output, "q\n");
status = _cairo_pdf_surface_paint_pattern (surface,
+ CAIRO_OPERATOR_OVER,
group->source,
&group->extents,
FALSE);
@@ -5784,7 +5836,9 @@ _cairo_pdf_surface_write_mask_group (cairo_pdf_surface_t *surface,
} else {
pattern_res.id = 0;
gstate_res.id = 0;
- status = _cairo_pdf_surface_add_pdf_pattern (surface, group->source, NULL,
+ status = _cairo_pdf_surface_add_pdf_pattern (surface, group->source,
+ CAIRO_OPERATOR_OVER,
+ NULL,
&pattern_res, &gstate_res);
if (unlikely (status))
return status;
@@ -6039,7 +6093,7 @@ _cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface)
return status;
_cairo_pdf_group_resources_clear (&surface->resources);
- status = _cairo_pdf_surface_open_content_stream (surface, NULL, NULL, FALSE);
+ status = _cairo_pdf_surface_open_content_stream (surface, NULL, NULL, FALSE, FALSE);
if (unlikely (status))
return status;
@@ -6327,12 +6381,13 @@ _cairo_pdf_surface_start_fallback (cairo_pdf_surface_t *surface)
bbox.p1.y = 0;
bbox.p2.x = surface->width;
bbox.p2.y = surface->height;
- return _cairo_pdf_surface_open_content_stream (surface, &bbox, NULL, TRUE);
+ return _cairo_pdf_surface_open_content_stream (surface, &bbox, NULL, TRUE, TRUE);
}
/* A PDF stencil mask is an A1 mask used with the current color */
static cairo_int_status_t
_cairo_pdf_surface_emit_stencil_mask (cairo_pdf_surface_t *surface,
+ cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
const cairo_rectangle_int_t *extents)
@@ -6379,7 +6434,7 @@ _cairo_pdf_surface_emit_stencil_mask (cairo_pdf_surface_t *surface,
return status;
_cairo_output_stream_printf (surface->output, "q\n");
- status = _cairo_pdf_surface_paint_surface_pattern (surface, mask, extents, TRUE);
+ status = _cairo_pdf_surface_paint_surface_pattern (surface, op, mask, extents, TRUE);
if (unlikely (status))
return status;
@@ -6455,6 +6510,7 @@ _cairo_pdf_surface_paint (void *abstract_surface,
if (_can_paint_pattern (source)) {
_cairo_output_stream_printf (surface->output, "q\n");
status = _cairo_pdf_surface_paint_pattern (surface,
+ op,
source,
&extents.bounded,
FALSE);
@@ -6468,7 +6524,7 @@ _cairo_pdf_surface_paint (void *abstract_surface,
pattern_res.id = 0;
gstate_res.id = 0;
- status = _cairo_pdf_surface_add_pdf_pattern (surface, source,
+ status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
&extents.bounded,
&pattern_res, &gstate_res);
if (unlikely (status))
@@ -6609,7 +6665,7 @@ _cairo_pdf_surface_mask (void *abstract_surface,
goto cleanup;
/* Check if we can use a stencil mask */
- status = _cairo_pdf_surface_emit_stencil_mask (surface, source, mask, &extents.bounded);
+ status = _cairo_pdf_surface_emit_stencil_mask (surface, op, source, mask, &extents.bounded);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto cleanup;
@@ -6726,7 +6782,7 @@ _cairo_pdf_surface_stroke (void *abstract_surface,
pattern_res.id = 0;
gstate_res.id = 0;
- status = _cairo_pdf_surface_add_pdf_pattern (surface, source,
+ status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
&extents.bounded,
&pattern_res, &gstate_res);
if (unlikely (status))
@@ -6879,6 +6935,7 @@ _cairo_pdf_surface_fill (void *abstract_surface,
goto cleanup;
status = _cairo_pdf_surface_paint_pattern (surface,
+ op,
source,
&extents.bounded,
FALSE);
@@ -6892,7 +6949,7 @@ _cairo_pdf_surface_fill (void *abstract_surface,
pattern_res.id = 0;
gstate_res.id = 0;
- status = _cairo_pdf_surface_add_pdf_pattern (surface, source,
+ status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
&extents.bounded,
&pattern_res, &gstate_res);
if (unlikely (status))
@@ -7067,6 +7124,7 @@ _cairo_pdf_surface_fill_stroke (void *abstract_surface,
fill_pattern_res.id = 0;
gstate_res.id = 0;
status = _cairo_pdf_surface_add_pdf_pattern (surface, fill_source,
+ fill_op,
&extents.bounded,
&fill_pattern_res,
&gstate_res);
@@ -7079,6 +7137,7 @@ _cairo_pdf_surface_fill_stroke (void *abstract_surface,
gstate_res.id = 0;
status = _cairo_pdf_surface_add_pdf_pattern (surface,
stroke_source,
+ stroke_op,
&extents.bounded,
&stroke_pattern_res,
&gstate_res);
@@ -7170,7 +7229,7 @@ _cairo_pdf_surface_show_text_glyphs (void *abstract_surface,
pattern_res.id = 0;
gstate_res.id = 0;
- status = _cairo_pdf_surface_add_pdf_pattern (surface, source,
+ status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
&extents.bounded,
&pattern_res, &gstate_res);
if (unlikely (status))
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-26 10:01:08 +0000