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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"
typedef struct {
cairo_scan_converter_t *converter;
cairo_point_t current_point;
cairo_point_t first_point;
cairo_bool_t has_first_point;
} scan_converter_filler_t;
static void
scan_converter_filler_init (scan_converter_filler_t *filler,
cairo_scan_converter_t *converter)
{
filler->converter = converter;
filler->current_point.x = 0;
filler->current_point.y = 0;
filler->first_point = filler->current_point;
filler->has_first_point = FALSE;
}
static cairo_status_t
scan_converter_filler_close_path (void *closure)
{
scan_converter_filler_t *filler = closure;
cairo_status_t status;
filler->has_first_point = FALSE;
if (filler->first_point.x == filler->current_point.x &&
filler->first_point.y == filler->current_point.y)
{
return CAIRO_STATUS_SUCCESS;
}
status = filler->converter->add_edge (
filler->converter,
filler->current_point.x, filler->current_point.y,
filler->first_point.x, filler->first_point.y);
filler->current_point = filler->first_point;
return status;
}
static cairo_status_t
scan_converter_filler_move_to (void *closure,
const cairo_point_t *p)
{
scan_converter_filler_t *filler = closure;
if (filler->has_first_point) {
cairo_status_t status = scan_converter_filler_close_path (closure);
if (status)
return status;
}
filler->current_point.x = p->x;
filler->current_point.y = p->y;
filler->first_point = filler->current_point;
filler->has_first_point = TRUE;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
scan_converter_filler_line_to (void *closure,
const cairo_point_t *p)
{
scan_converter_filler_t *filler = closure;
cairo_status_t status;
cairo_point_t to;
to.x = p->x;
to.y = p->y;
status = filler->converter->add_edge (
filler->converter,
filler->current_point.x, filler->current_point.y,
to.x, to.y);
filler->current_point = to;
return status;
}
static cairo_status_t
_cairo_path_fixed_fill_to_scan_converter (
cairo_path_fixed_t *path,
double tolerance,
cairo_scan_converter_t *converter)
{
scan_converter_filler_t filler;
cairo_status_t status;
scan_converter_filler_init (&filler, converter);
status = _cairo_path_fixed_interpret_flat (
path, CAIRO_DIRECTION_FORWARD,
scan_converter_filler_move_to,
scan_converter_filler_line_to,
scan_converter_filler_close_path,
&filler, tolerance);
if (status)
return status;
return scan_converter_filler_close_path (&filler);
}
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 _cairo_scan_converter_create_in_error (
CAIRO_INT_STATUS_UNSUPPORTED);
}
else {
return _cairo_tor_scan_converter_create (
rects->mask.x,
rects->mask.y,
rects->mask.x + rects->width,
rects->mask.y + rects->height,
fill_rule);
}
}
cairo_status_t
_cairo_path_fixed_fill_using_spans (
cairo_operator_t op,
const cairo_pattern_t *pattern,
cairo_path_fixed_t *path,
cairo_surface_t *dst,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
const cairo_composite_rectangles_t *rects)
{
cairo_status_t status;
cairo_span_renderer_t *renderer = _cairo_surface_create_span_renderer (
op, pattern, dst, antialias, rects);
cairo_scan_converter_t *converter = _create_scan_converter (
fill_rule, antialias, rects);
status = _cairo_path_fixed_fill_to_scan_converter (
path, tolerance, converter);
if (status)
goto BAIL;
status = converter->generate (converter, renderer);
if (status)
goto BAIL;
status = renderer->finish (renderer);
if (status)
goto BAIL;
BAIL:
renderer->destroy (renderer);
converter->destroy (converter);
return status;
}
static void
_cairo_nil_destroy (void *abstract)
{
(void) abstract;
}
static cairo_status_t
_cairo_nil_scan_converter_add_edge (void *abstract_converter,
cairo_fixed_t x1,
cairo_fixed_t y1,
cairo_fixed_t x2,
cairo_fixed_t y2)
{
(void) abstract_converter;
(void) x1;
(void) y1;
(void) x2;
(void) y2;
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_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;
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;
default:
break;
}
status = CAIRO_STATUS_NO_MEMORY;
RETURN_NIL;
#undef RETURN_NIL
}
|
