cairo-paginated-surface.c [plain text]
#include "cairoint.h"
#include "cairo-paginated-surface-private.h"
#include "cairo-meta-surface-private.h"
typedef struct _cairo_paginated_surface {
cairo_surface_t base;
cairo_content_t content;
int width;
int height;
cairo_surface_t *target;
cairo_surface_t *meta;
} cairo_paginated_surface_t;
const cairo_private cairo_surface_backend_t cairo_paginated_surface_backend;
static cairo_int_status_t
_cairo_paginated_surface_show_page (void *abstract_surface);
#if 0
static cairo_surface_t *
_cairo_paginated_surface_create_similar (void *abstract_surface,
cairo_content_t content,
int width,
int height)
{
cairo_paginated_surface_t *surface = abstract_surface;
return cairo_surface_create_similar (surface->target, content,
width, height);
}
#endif
cairo_surface_t *
_cairo_paginated_surface_create (cairo_surface_t *target,
cairo_content_t content,
int width,
int height)
{
cairo_paginated_surface_t *surface;
surface = malloc (sizeof (cairo_paginated_surface_t));
if (surface == NULL)
goto FAIL;
_cairo_surface_init (&surface->base, &cairo_paginated_surface_backend);
surface->base.type = cairo_surface_get_type (target);
surface->content = content;
surface->width = width;
surface->height = height;
surface->target = target;
surface->meta = _cairo_meta_surface_create (content, width, height);
if (cairo_surface_status (surface->meta))
goto FAIL_CLEANUP_SURFACE;
return &surface->base;
FAIL_CLEANUP_SURFACE:
free (surface);
FAIL:
_cairo_error (CAIRO_STATUS_NO_MEMORY);
return (cairo_surface_t*) &_cairo_surface_nil;
}
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;
}
static cairo_status_t
_cairo_paginated_surface_finish (void *abstract_surface)
{
cairo_paginated_surface_t *surface = abstract_surface;
cairo_surface_destroy (surface->meta);
cairo_surface_destroy (surface->target);
return CAIRO_STATUS_SUCCESS;
}
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_surface_t *image;
cairo_rectangle_t extents;
_cairo_surface_get_extents (surface->target, &extents);
image = _cairo_image_surface_create_with_content (surface->content,
extents.width,
extents.height);
_cairo_meta_surface_replay (surface->meta, image);
*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 void
_paint_page (cairo_paginated_surface_t *surface)
{
cairo_surface_t *image;
cairo_pattern_t *pattern;
image = _cairo_image_surface_create_with_content (surface->content,
surface->width,
surface->height);
_cairo_meta_surface_replay (surface->meta, image);
pattern = cairo_pattern_create_for_surface (image);
_cairo_surface_paint (surface->target, CAIRO_OPERATOR_SOURCE, pattern);
cairo_pattern_destroy (pattern);
cairo_surface_destroy (image);
}
static cairo_int_status_t
_cairo_paginated_surface_copy_page (void *abstract_surface)
{
cairo_paginated_surface_t *surface = abstract_surface;
_paint_page (surface);
_cairo_surface_show_page (surface->target);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_paginated_surface_show_page (void *abstract_surface)
{
cairo_paginated_surface_t *surface = abstract_surface;
_paint_page (surface);
_cairo_surface_show_page (surface->target);
cairo_surface_destroy (surface->meta);
surface->meta = _cairo_meta_surface_create (surface->content,
surface->width, surface->height);
if (cairo_surface_status (surface->meta))
return cairo_surface_status (surface->meta);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_paginated_surface_intersect_clip_path (void *abstract_surface,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_intersect_clip_path (surface->meta,
path, fill_rule,
tolerance, antialias);
}
static cairo_int_status_t
_cairo_paginated_surface_get_extents (void *abstract_surface,
cairo_rectangle_t *rectangle)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_get_extents (surface->target, rectangle);
}
static cairo_int_status_t
_cairo_paginated_surface_paint (void *abstract_surface,
cairo_operator_t op,
cairo_pattern_t *source)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_paint (surface->meta, op, source);
}
static cairo_int_status_t
_cairo_paginated_surface_mask (void *abstract_surface,
cairo_operator_t op,
cairo_pattern_t *source,
cairo_pattern_t *mask)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_mask (surface->meta, op, source, mask);
}
static cairo_int_status_t
_cairo_paginated_surface_stroke (void *abstract_surface,
cairo_operator_t op,
cairo_pattern_t *source,
cairo_path_fixed_t *path,
cairo_stroke_style_t *style,
cairo_matrix_t *ctm,
cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_stroke (surface->meta, op, source,
path, style,
ctm, ctm_inverse,
tolerance, antialias);
}
static cairo_int_status_t
_cairo_paginated_surface_fill (void *abstract_surface,
cairo_operator_t op,
cairo_pattern_t *source,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_fill (surface->meta, op, source,
path, fill_rule,
tolerance, antialias);
}
static cairo_int_status_t
_cairo_paginated_surface_show_glyphs (void *abstract_surface,
cairo_operator_t op,
cairo_pattern_t *source,
const cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font)
{
cairo_paginated_surface_t *surface = abstract_surface;
return _cairo_surface_show_glyphs (surface->meta, op, source,
glyphs, num_glyphs,
scaled_font);
}
static cairo_surface_t *
_cairo_paginated_surface_snapshot (void *abstract_other)
{
cairo_paginated_surface_t *other = abstract_other;
#if 0
return _cairo_surface_snapshot (other->meta);
#else
cairo_rectangle_t extents;
cairo_surface_t *surface;
_cairo_surface_get_extents (other->target, &extents);
surface = _cairo_image_surface_create_with_content (other->content,
extents.width,
extents.height);
_cairo_meta_surface_replay (other->meta, surface);
return surface;
#endif
}
const cairo_surface_backend_t cairo_paginated_surface_backend = {
CAIRO_INTERNAL_SURFACE_TYPE_PAGINATED,
NULL,
_cairo_paginated_surface_finish,
_cairo_paginated_surface_acquire_source_image,
_cairo_paginated_surface_release_source_image,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_cairo_paginated_surface_copy_page,
_cairo_paginated_surface_show_page,
NULL,
_cairo_paginated_surface_intersect_clip_path,
_cairo_paginated_surface_get_extents,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_cairo_paginated_surface_paint,
_cairo_paginated_surface_mask,
_cairo_paginated_surface_stroke,
_cairo_paginated_surface_fill,
_cairo_paginated_surface_show_glyphs,
_cairo_paginated_surface_snapshot
};