cairo-paginated-surface.c [plain text]
#include "cairoint.h"
#include "cairo-paginated-private.h"
#include "cairo-paginated-surface-private.h"
#include "cairo-recording-surface-private.h"
#include "cairo-analysis-surface-private.h"
#include "cairo-error-private.h"
static const cairo_surface_backend_t cairo_paginated_surface_backend;
static cairo_int_status_t
_cairo_paginated_surface_show_page (void *abstract_surface);
static cairo_surface_t *
_cairo_paginated_surface_create_similar (void *abstract_surface,
cairo_content_t content,
int width,
int height)
{
cairo_rectangle_t rect;
rect.x = rect.y = 0.;
rect.width = width;
rect.height = height;
return cairo_recording_surface_create (content, &rect);
}
static cairo_surface_t *
_create_recording_surface_for_target (cairo_surface_t *target,
cairo_content_t content)
{
cairo_rectangle_int_t rect;
if (_cairo_surface_get_extents (target, &rect)) {
cairo_rectangle_t recording_extents;
recording_extents.x = rect.x;
recording_extents.y = rect.y;
recording_extents.width = rect.width;
recording_extents.height = rect.height;
return cairo_recording_surface_create (content, &recording_extents);
} else {
return cairo_recording_surface_create (content, NULL);
}
}
cairo_surface_t *
_cairo_paginated_surface_create (cairo_surface_t *target,
cairo_content_t content,
const cairo_paginated_surface_backend_t *backend)
{
cairo_paginated_surface_t *surface;
cairo_status_t status;
surface = malloc (sizeof (cairo_paginated_surface_t));
if (unlikely (surface == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto FAIL;
}
_cairo_surface_init (&surface->base,
&cairo_paginated_surface_backend,
NULL,
content);
surface->base.type = target->type;
surface->target = cairo_surface_reference (target);
surface->content = content;
surface->backend = backend;
surface->recording_surface = _create_recording_surface_for_target (target, content);
status = surface->recording_surface->status;
if (unlikely (status))
goto FAIL_CLEANUP_SURFACE;
surface->page_num = 1;
surface->base.is_clear = TRUE;
return &surface->base;
FAIL_CLEANUP_SURFACE:
cairo_surface_destroy (target);
free (surface);
FAIL:
return _cairo_surface_create_in_error (status);
}
cairo_bool_t
_cairo_surface_is_paginated (cairo_surface_t *surface)
{
return surface->backend == &cairo_paginated_surface_backend;
}
cairo_surface_t *
_cairo_paginated_surface_get_target (cairo_surface_t *surface)
{
cairo_paginated_surface_t *paginated_surface;
assert (_cairo_surface_is_paginated (surface));
paginated_surface = (cairo_paginated_surface_t *) surface;
return paginated_surface->target;
}
cairo_status_t
_cairo_paginated_surface_set_size (cairo_surface_t *surface,
int width,
int height)
{
cairo_paginated_surface_t *paginated_surface;
cairo_status_t status;
cairo_rectangle_t recording_extents;
assert (_cairo_surface_is_paginated (surface));
paginated_surface = (cairo_paginated_surface_t *) surface;
recording_extents.x = 0;
recording_extents.y = 0;
recording_extents.width = width;
recording_extents.height = height;
cairo_surface_destroy (paginated_surface->recording_surface);
paginated_surface->recording_surface = cairo_recording_surface_create (paginated_surface->content,
&recording_extents);
status = paginated_surface->recording_surface->status;
if (unlikely (status))
return _cairo_surface_set_error (surface, status);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_paginated_surface_finish (void *abstract_surface)
{
cairo_paginated_surface_t *surface = abstract_surface;
cairo_status_t status = CAIRO_STATUS_SUCCESS;
if (! surface->base.is_clear || surface->page_num == 1) {
status = _cairo_paginated_surface_show_page (surface);
}
if (CAIRO_REFERENCE_COUNT_GET_VALUE (&surface->target->ref_count) == 1)
cairo_surface_finish (surface->target);
if (status == CAIRO_STATUS_SUCCESS)
status = cairo_surface_status (surface->target);
cairo_surface_destroy (surface->target);
cairo_surface_finish (surface->recording_surface);
if (status == CAIRO_STATUS_SUCCESS)
status = cairo_surface_status (surface->recording_surface);
cairo_surface_destroy (surface->recording_surface);
return status;
}
static cairo_surface_t *
_cairo_paginated_surface_create_image_surface (void *abstract_surface,
int width,
int height)
{
cairo_paginated_surface_t *surface = abstract_surface;
cairo_surface_t *image;
cairo_font_options_t options;
image = _cairo_image_surface_create_with_content (surface->content,
width,
height);
cairo_surface_get_font_options (&surface->base, &options);
_cairo_surface_set_font_options (image, &options);
return image;
}
static cairo_status_t
_cairo_paginated_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_paginated_surface_t *surface = abstract_surface;
cairo_bool_t is_bounded;
cairo_surface_t *image;
cairo_status_t status;
cairo_rectangle_int_t extents;
is_bounded = _cairo_surface_get_extents (surface->target, &extents);
if (! is_bounded)
return CAIRO_INT_STATUS_UNSUPPORTED;
image = _cairo_paginated_surface_create_image_surface (surface,
extents.width,
extents.height);
status = _cairo_recording_surface_replay (surface->recording_surface, image);
if (unlikely (status)) {
cairo_surface_destroy (image);
return status;
}
*image_out = (cairo_image_surface_t*) image;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_paginated_surface_release_source_image (void *abstract_surface,
cairo_image_surface_t *image,
void *image_extra)
{
cairo_surface_destroy (&image->base);
}
static cairo_int_status_t
_paint_fallback_image (cairo_paginated_surface_t *surface,
cairo_rectangle_int_t *rect)
{
double x_scale = surface->base.x_fallback_resolution / surface->target->x_resolution;
double y_scale = surface->base.y_fallback_resolution / surface->target->y_resolution;
int x, y, width, height;
cairo_status_t status;
cairo_surface_t *image;
cairo_surface_pattern_t pattern;
cairo_clip_t clip;
x = rect->x;
y = rect->y;
width = rect->width;
height = rect->height;
image = _cairo_paginated_surface_create_image_surface (surface,
ceil (width * x_scale),
ceil (height * y_scale));
_cairo_surface_set_device_scale (image, x_scale, y_scale);
cairo_surface_set_device_offset (image, -x*x_scale, -y*y_scale);
status = _cairo_recording_surface_replay (surface->recording_surface, image);
if (unlikely (status))
goto CLEANUP_IMAGE;
_cairo_pattern_init_for_surface (&pattern, image);
cairo_matrix_init (&pattern.base.matrix,
x_scale, 0, 0, y_scale, -x*x_scale, -y*y_scale);
pattern.base.filter = CAIRO_FILTER_NEAREST;
_cairo_clip_init (&clip);
status = _cairo_clip_rectangle (&clip, rect);
if (likely (status == CAIRO_STATUS_SUCCESS)) {
status = _cairo_surface_paint (surface->target,
CAIRO_OPERATOR_SOURCE,
&pattern.base, &clip);
}
_cairo_clip_fini (&clip);
_cairo_pattern_fini (&pattern.base);
CLEANUP_IMAGE:
cairo_surface_destroy (image);
return status;
}
static cairo_int_status_t
_paint_page (cairo_paginated_surface_t *surface)
{
cairo_surface_t *analysis;
cairo_status_t status;
cairo_bool_t has_supported, has_page_fallback, has_finegrained_fallback;
if (unlikely (surface->target->status))
return surface->target->status;
analysis = _cairo_analysis_surface_create (surface->target);
if (unlikely (analysis->status))
return _cairo_surface_set_error (surface->target, analysis->status);
surface->backend->set_paginated_mode (surface->target,
CAIRO_PAGINATED_MODE_ANALYZE);
status = _cairo_recording_surface_replay_and_create_regions (surface->recording_surface,
analysis);
if (status || analysis->status) {
if (status == CAIRO_STATUS_SUCCESS)
status = analysis->status;
goto FAIL;
}
if (surface->backend->set_bounding_box) {
cairo_box_t bbox;
_cairo_analysis_surface_get_bounding_box (analysis, &bbox);
status = surface->backend->set_bounding_box (surface->target, &bbox);
if (unlikely (status))
goto FAIL;
}
if (surface->backend->set_fallback_images_required) {
cairo_bool_t has_fallbacks = _cairo_analysis_surface_has_unsupported (analysis);
status = surface->backend->set_fallback_images_required (surface->target,
has_fallbacks);
if (unlikely (status))
goto FAIL;
}
if (surface->backend->supports_fine_grained_fallbacks != NULL &&
surface->backend->supports_fine_grained_fallbacks (surface->target))
{
has_supported = _cairo_analysis_surface_has_supported (analysis);
has_page_fallback = FALSE;
has_finegrained_fallback = _cairo_analysis_surface_has_unsupported (analysis);
}
else
{
if (_cairo_analysis_surface_has_unsupported (analysis)) {
has_supported = FALSE;
has_page_fallback = TRUE;
} else {
has_supported = TRUE;
has_page_fallback = FALSE;
}
has_finegrained_fallback = FALSE;
}
if (has_supported) {
surface->backend->set_paginated_mode (surface->target,
CAIRO_PAGINATED_MODE_RENDER);
status = _cairo_recording_surface_replay_region (surface->recording_surface,
NULL,
surface->target,
CAIRO_RECORDING_REGION_NATIVE);
assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
if (unlikely (status))
goto FAIL;
}
if (has_page_fallback) {
cairo_rectangle_int_t extents;
cairo_bool_t is_bounded;
surface->backend->set_paginated_mode (surface->target,
CAIRO_PAGINATED_MODE_FALLBACK);
is_bounded = _cairo_surface_get_extents (surface->target, &extents);
if (! is_bounded) {
status = CAIRO_INT_STATUS_UNSUPPORTED;
goto FAIL;
}
status = _paint_fallback_image (surface, &extents);
if (unlikely (status))
goto FAIL;
}
if (has_finegrained_fallback) {
cairo_region_t *region;
int num_rects, i;
surface->backend->set_paginated_mode (surface->target,
CAIRO_PAGINATED_MODE_FALLBACK);
region = _cairo_analysis_surface_get_unsupported (analysis);
num_rects = cairo_region_num_rectangles (region);
for (i = 0; i < num_rects; i++) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
status = _paint_fallback_image (surface, &rect);
if (unlikely (status))
goto FAIL;
}
}
FAIL:
cairo_surface_destroy (analysis);
return _cairo_surface_set_error (surface->target, status);
}
static cairo_status_t
_start_page (cairo_paginated_surface_t *surface)
{
if (surface->target->status)
return surface->target->status;
if (! surface->backend->start_page)
return CAIRO_STATUS_SUCCESS;
return _cairo_surface_set_error (surface->target,
surface->backend->start_page (surface->target));
}
static cairo_int_status_t
_cairo_paginated_surface_copy_page (void *abstract_surface)
{
cairo_status_t status;
cairo_paginated_surface_t *surface = abstract_surface;
status = _start_page (surface);
if (unlikely (status))
return status;
status = _paint_page (surface);
if (unlikely (status))
return status;
surface->page_num++;
cairo_surface_show_page (surface->target);
return cairo_surface_status (surface->target);
}
static cairo_int_status_t
_cairo_paginated_surface_show_page (void *abstract_surface)
{
cairo_status_t status;
cairo_paginated_surface_t *surface = abstract_surface;
status = _start_page (surface);
if (unlikely (status))
return status;
status = _paint_page (surface);
if (unlikely (status))
return status;
cairo_surface_show_page (surface->target);
status = surface->target->status;
if (unlikely (status))
return status;
status = surface->recording_surface->status;
if (unlikely (status))
return status;
if (! surface->base.finished) {
cairo_surface_destroy (surface->recording_surface);
surface->recording_surface = _create_recording_surface_for_target (surface->target,
surface->content);
status = surface->recording_surface->status;
if (unlikely (status))
return status;
surface->page_num++;
surface->base.is_clear = TRUE;
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_bool_t
_cairo_paginated_surface_get_extents (void *abstract_surface,
cairo_rectangle_int_t *rectangle)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_get_extents (surface->target, rectangle);
}
static void
_cairo_paginated_surface_get_font_options (void *abstract_surface,
cairo_font_options_t *options)
{
cairo_paginated_surface_t *surface = abstract_surface;
cairo_surface_get_font_options (surface->target, options);
}
static cairo_int_status_t
_cairo_paginated_surface_paint (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_clip_t *clip)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_paint (surface->recording_surface, op, source, clip);
}
static cairo_int_status_t
_cairo_paginated_surface_mask (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
cairo_clip_t *clip)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_mask (surface->recording_surface, op, source, mask, clip);
}
static cairo_int_status_t
_cairo_paginated_surface_stroke (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
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_clip_t *clip)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_stroke (surface->recording_surface, op, source,
path, style,
ctm, ctm_inverse,
tolerance, antialias,
clip);
}
static cairo_int_status_t
_cairo_paginated_surface_fill (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
cairo_clip_t *clip)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_fill (surface->recording_surface, op, source,
path, fill_rule,
tolerance, antialias,
clip);
}
static cairo_bool_t
_cairo_paginated_surface_has_show_text_glyphs (void *abstract_surface)
{
cairo_paginated_surface_t *surface = abstract_surface;
return cairo_surface_has_show_text_glyphs (surface->target);
}
static cairo_int_status_t
_cairo_paginated_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_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_show_text_glyphs (surface->recording_surface, op, source,
utf8, utf8_len,
glyphs, num_glyphs,
clusters, num_clusters,
cluster_flags,
scaled_font,
clip);
}
static cairo_surface_t *
_cairo_paginated_surface_snapshot (void *abstract_other)
{
cairo_paginated_surface_t *other = abstract_other;
return _cairo_surface_snapshot (other->recording_surface);
}
static const cairo_surface_backend_t cairo_paginated_surface_backend = {
CAIRO_INTERNAL_SURFACE_TYPE_PAGINATED,
_cairo_paginated_surface_create_similar,
_cairo_paginated_surface_finish,
_cairo_paginated_surface_acquire_source_image,
_cairo_paginated_surface_release_source_image,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_cairo_paginated_surface_copy_page,
_cairo_paginated_surface_show_page,
_cairo_paginated_surface_get_extents,
NULL,
_cairo_paginated_surface_get_font_options,
NULL,
NULL,
NULL,
NULL,
_cairo_paginated_surface_paint,
_cairo_paginated_surface_mask,
_cairo_paginated_surface_stroke,
_cairo_paginated_surface_fill,
NULL,
_cairo_paginated_surface_snapshot,
NULL,
NULL,
NULL,
NULL,
_cairo_paginated_surface_has_show_text_glyphs,
_cairo_paginated_surface_show_text_glyphs
};