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|
/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright (c) 2008 M Joonas Pihlaja
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "cairoint.h"
#include "cairo-fixed-private.h"
static cairo_scan_converter_t *
_create_scan_converter (cairo_fill_rule_t fill_rule,
cairo_antialias_t antialias,
const cairo_composite_rectangles_t *rects)
{
if (antialias == CAIRO_ANTIALIAS_NONE) {
ASSERT_NOT_REACHED;
return NULL;
}
return _cairo_tor_scan_converter_create (rects->mask.x,
rects->mask.y,
rects->mask.x + rects->width,
rects->mask.y + rects->height,
fill_rule);
}
/* XXX Add me to the compositor interface. Ok, first create the compositor
* interface, and then add this with associated fallback!
*/
cairo_status_t
_cairo_surface_composite_polygon (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *pattern,
cairo_fill_rule_t fill_rule,
cairo_antialias_t antialias,
const cairo_composite_rectangles_t *rects,
cairo_polygon_t *polygon,
cairo_region_t *clip_region)
{
cairo_span_renderer_t *renderer;
cairo_scan_converter_t *converter;
cairo_status_t status;
converter = _create_scan_converter (fill_rule, antialias, rects);
status = converter->add_polygon (converter, polygon);
if (unlikely (status))
goto CLEANUP_CONVERTER;
renderer = _cairo_surface_create_span_renderer (op, pattern, surface,
antialias, rects,
clip_region);
status = converter->generate (converter, renderer);
if (unlikely (status))
goto CLEANUP_RENDERER;
status = renderer->finish (renderer);
CLEANUP_RENDERER:
renderer->destroy (renderer);
CLEANUP_CONVERTER:
converter->destroy (converter);
return status;
}
cairo_status_t
_cairo_surface_composite_trapezoids_as_polygon (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *pattern,
cairo_antialias_t antialias,
int src_x, int src_y,
int dst_x, int dst_y,
int width, int height,
cairo_trapezoid_t *traps,
int num_traps,
cairo_region_t *clip_region)
{
cairo_span_renderer_t *renderer;
cairo_scan_converter_t *converter;
cairo_composite_rectangles_t rects;
cairo_status_t status;
rects.src.x = src_x;
rects.src.y = src_y;
rects.dst.x = 0;
rects.dst.y = 0;
rects.mask.x = dst_x;
rects.mask.y = dst_y;
rects.width = width;
rects.height = height;
converter = _create_scan_converter (CAIRO_FILL_RULE_WINDING,
antialias,
&rects);
status = converter->status;
if (unlikely (status))
goto CLEANUP_CONVERTER;
while (num_traps--) {
status = converter->add_edge (converter,
&traps->left.p1, &traps->left.p2,
traps->top, traps->bottom, 1);
if (unlikely (status))
goto CLEANUP_CONVERTER;
status = converter->add_edge (converter,
&traps->right.p1, &traps->right.p2,
traps->top, traps->bottom, -1);
if (unlikely (status))
goto CLEANUP_CONVERTER;
traps++;
}
renderer = _cairo_surface_create_span_renderer (op, pattern, surface,
antialias, &rects,
clip_region);
status = converter->generate (converter, renderer);
if (unlikely (status))
goto CLEANUP_RENDERER;
status = renderer->finish (renderer);
CLEANUP_RENDERER:
renderer->destroy (renderer);
CLEANUP_CONVERTER:
converter->destroy (converter);
return status;
}
static void
_cairo_nil_destroy (void *abstract)
{
(void) abstract;
}
static cairo_status_t
_cairo_nil_scan_converter_add_polygon (void *abstract_converter,
const cairo_polygon_t *polygon)
{
(void) abstract_converter;
(void) polygon;
return _cairo_scan_converter_status (abstract_converter);
}
static cairo_status_t
_cairo_nil_scan_converter_add_edge (void *abstract_converter,
const cairo_point_t *p1,
const cairo_point_t *p2,
int top, int bottom,
int dir)
{
(void) abstract_converter;
(void) p1;
(void) p2;
(void) top;
(void) bottom;
(void) dir;
return _cairo_scan_converter_status (abstract_converter);
}
static cairo_status_t
_cairo_nil_scan_converter_generate (void *abstract_converter,
cairo_span_renderer_t *renderer)
{
(void) abstract_converter;
(void) renderer;
return _cairo_scan_converter_status (abstract_converter);
}
cairo_status_t
_cairo_scan_converter_status (void *abstract_converter)
{
cairo_scan_converter_t *converter = abstract_converter;
return converter->status;
}
cairo_status_t
_cairo_scan_converter_set_error (void *abstract_converter,
cairo_status_t error)
{
cairo_scan_converter_t *converter = abstract_converter;
if (error == CAIRO_STATUS_SUCCESS)
ASSERT_NOT_REACHED;
if (converter->status == CAIRO_STATUS_SUCCESS) {
converter->add_polygon = _cairo_nil_scan_converter_add_polygon;
converter->add_edge = _cairo_nil_scan_converter_add_edge;
converter->generate = _cairo_nil_scan_converter_generate;
converter->status = error;
}
return converter->status;
}
static void
_cairo_nil_scan_converter_init (cairo_scan_converter_t *converter,
cairo_status_t status)
{
converter->destroy = _cairo_nil_destroy;
converter->status = CAIRO_STATUS_SUCCESS;
status = _cairo_scan_converter_set_error (converter, status);
}
cairo_scan_converter_t *
_cairo_scan_converter_create_in_error (cairo_status_t status)
{
#define RETURN_NIL {\
static cairo_scan_converter_t nil;\
_cairo_nil_scan_converter_init (&nil, status);\
return &nil;\
}
switch (status) {
case CAIRO_STATUS_SUCCESS:
case CAIRO_STATUS_LAST_STATUS:
ASSERT_NOT_REACHED;
break;
case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
default:
break;
}
status = CAIRO_STATUS_NO_MEMORY;
RETURN_NIL;
#undef RETURN_NIL
}
static cairo_status_t
_cairo_nil_span_renderer_render_row (
void *abstract_renderer,
int y,
const cairo_half_open_span_t *coverages,
unsigned num_coverages)
{
(void) y;
(void) coverages;
(void) num_coverages;
return _cairo_span_renderer_status (abstract_renderer);
}
static cairo_status_t
_cairo_nil_span_renderer_finish (void *abstract_renderer)
{
return _cairo_span_renderer_status (abstract_renderer);
}
cairo_status_t
_cairo_span_renderer_status (void *abstract_renderer)
{
cairo_span_renderer_t *renderer = abstract_renderer;
return renderer->status;
}
cairo_status_t
_cairo_span_renderer_set_error (
void *abstract_renderer,
cairo_status_t error)
{
cairo_span_renderer_t *renderer = abstract_renderer;
if (error == CAIRO_STATUS_SUCCESS) {
ASSERT_NOT_REACHED;
}
if (renderer->status == CAIRO_STATUS_SUCCESS) {
renderer->render_row = _cairo_nil_span_renderer_render_row;
renderer->finish = _cairo_nil_span_renderer_finish;
renderer->status = error;
}
return renderer->status;
}
static void
_cairo_nil_span_renderer_init (cairo_span_renderer_t *renderer,
cairo_status_t status)
{
renderer->destroy = _cairo_nil_destroy;
renderer->status = CAIRO_STATUS_SUCCESS;
status = _cairo_span_renderer_set_error (renderer, status);
}
cairo_span_renderer_t *
_cairo_span_renderer_create_in_error (cairo_status_t status)
{
#define RETURN_NIL {\
static cairo_span_renderer_t nil;\
_cairo_nil_span_renderer_init (&nil, status);\
return &nil;\
}
switch (status) {
case CAIRO_STATUS_SUCCESS:
case CAIRO_STATUS_LAST_STATUS:
ASSERT_NOT_REACHED;
break;
case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
default:
break;
}
status = CAIRO_STATUS_NO_MEMORY;
RETURN_NIL;
#undef RETURN_NIL
}
|
