mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
synced 2026-05-19 07:38:07 +02:00
6d8b353658
Handle the new CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED status code in the switch/case of the ..._create_in_error() functions for creating span renderers or scan converters.
406 lines
12 KiB
C
406 lines
12 KiB
C
/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright (c) 2008 M Joonas Pihlaja
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "cairoint.h"
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typedef struct {
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cairo_scan_converter_t *converter;
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cairo_point_t current_point;
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cairo_point_t first_point;
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cairo_bool_t has_first_point;
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} scan_converter_filler_t;
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static void
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scan_converter_filler_init (scan_converter_filler_t *filler,
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cairo_scan_converter_t *converter)
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{
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filler->converter = converter;
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filler->current_point.x = 0;
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filler->current_point.y = 0;
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filler->first_point = filler->current_point;
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filler->has_first_point = FALSE;
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}
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static cairo_status_t
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scan_converter_filler_close_path (void *closure)
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{
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scan_converter_filler_t *filler = closure;
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cairo_status_t status;
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filler->has_first_point = FALSE;
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if (filler->first_point.x == filler->current_point.x &&
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filler->first_point.y == filler->current_point.y)
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{
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return CAIRO_STATUS_SUCCESS;
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}
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status = filler->converter->add_edge (
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filler->converter,
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filler->current_point.x, filler->current_point.y,
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filler->first_point.x, filler->first_point.y);
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filler->current_point = filler->first_point;
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return status;
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}
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static cairo_status_t
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scan_converter_filler_move_to (void *closure,
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const cairo_point_t *p)
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{
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scan_converter_filler_t *filler = closure;
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if (filler->has_first_point) {
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cairo_status_t status = scan_converter_filler_close_path (closure);
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if (status)
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return status;
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}
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filler->current_point.x = p->x;
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filler->current_point.y = p->y;
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filler->first_point = filler->current_point;
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filler->has_first_point = TRUE;
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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scan_converter_filler_line_to (void *closure,
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const cairo_point_t *p)
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{
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scan_converter_filler_t *filler = closure;
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cairo_status_t status;
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cairo_point_t to;
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to.x = p->x;
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to.y = p->y;
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status = filler->converter->add_edge (
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filler->converter,
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filler->current_point.x, filler->current_point.y,
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to.x, to.y);
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filler->current_point = to;
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return status;
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}
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static cairo_status_t
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_cairo_path_fixed_fill_to_scan_converter (
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cairo_path_fixed_t *path,
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double tolerance,
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cairo_scan_converter_t *converter)
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{
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scan_converter_filler_t filler;
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cairo_status_t status;
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scan_converter_filler_init (&filler, converter);
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status = _cairo_path_fixed_interpret_flat (
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path, CAIRO_DIRECTION_FORWARD,
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scan_converter_filler_move_to,
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scan_converter_filler_line_to,
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scan_converter_filler_close_path,
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&filler, tolerance);
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if (status)
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return status;
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return scan_converter_filler_close_path (&filler);
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}
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static cairo_scan_converter_t *
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_create_scan_converter (cairo_fill_rule_t fill_rule,
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cairo_antialias_t antialias,
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const cairo_composite_rectangles_t *rects)
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{
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if (antialias == CAIRO_ANTIALIAS_NONE) {
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ASSERT_NOT_REACHED;
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return _cairo_scan_converter_create_in_error (
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CAIRO_INT_STATUS_UNSUPPORTED);
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}
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else {
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return _cairo_tor_scan_converter_create (
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rects->mask.x,
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rects->mask.y,
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rects->mask.x + rects->width,
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rects->mask.y + rects->height,
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fill_rule);
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}
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}
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cairo_status_t
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_cairo_path_fixed_fill_using_spans (
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cairo_operator_t op,
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const cairo_pattern_t *pattern,
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cairo_path_fixed_t *path,
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cairo_surface_t *dst,
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cairo_fill_rule_t fill_rule,
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double tolerance,
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cairo_antialias_t antialias,
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const cairo_composite_rectangles_t *rects)
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{
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cairo_status_t status;
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cairo_span_renderer_t *renderer = _cairo_surface_create_span_renderer (
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op, pattern, dst, antialias, rects);
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cairo_scan_converter_t *converter = _create_scan_converter (
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fill_rule, antialias, rects);
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status = _cairo_path_fixed_fill_to_scan_converter (
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path, tolerance, converter);
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if (status)
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goto BAIL;
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status = converter->generate (converter, renderer);
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if (status)
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goto BAIL;
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status = renderer->finish (renderer);
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if (status)
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goto BAIL;
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BAIL:
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renderer->destroy (renderer);
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converter->destroy (converter);
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return status;
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}
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static void
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_cairo_nil_destroy (void *abstract)
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{
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(void) abstract;
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}
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static cairo_status_t
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_cairo_nil_scan_converter_add_edge (void *abstract_converter,
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cairo_fixed_t x1,
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cairo_fixed_t y1,
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cairo_fixed_t x2,
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cairo_fixed_t y2)
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{
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(void) abstract_converter;
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(void) x1;
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(void) y1;
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(void) x2;
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(void) y2;
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return _cairo_scan_converter_status (abstract_converter);
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}
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static cairo_status_t
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_cairo_nil_scan_converter_generate (void *abstract_converter,
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cairo_span_renderer_t *renderer)
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{
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(void) abstract_converter;
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(void) renderer;
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return _cairo_scan_converter_status (abstract_converter);
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}
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cairo_status_t
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_cairo_scan_converter_status (void *abstract_converter)
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{
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cairo_scan_converter_t *converter = abstract_converter;
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return converter->status;
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}
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cairo_status_t
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_cairo_scan_converter_set_error (void *abstract_converter,
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cairo_status_t error)
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{
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cairo_scan_converter_t *converter = abstract_converter;
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if (error == CAIRO_STATUS_SUCCESS)
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ASSERT_NOT_REACHED;
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if (converter->status == CAIRO_STATUS_SUCCESS) {
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converter->add_edge = _cairo_nil_scan_converter_add_edge;
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converter->generate = _cairo_nil_scan_converter_generate;
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converter->status = error;
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}
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return converter->status;
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}
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static void
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_cairo_nil_scan_converter_init (cairo_scan_converter_t *converter,
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cairo_status_t status)
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{
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converter->destroy = _cairo_nil_destroy;
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converter->status = CAIRO_STATUS_SUCCESS;
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status = _cairo_scan_converter_set_error (converter, status);
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}
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cairo_scan_converter_t *
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_cairo_scan_converter_create_in_error (cairo_status_t status)
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{
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#define RETURN_NIL {\
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static cairo_scan_converter_t nil;\
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_cairo_nil_scan_converter_init (&nil, status);\
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return &nil;\
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}
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switch (status) {
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case CAIRO_STATUS_SUCCESS:
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case CAIRO_STATUS_LAST_STATUS:
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ASSERT_NOT_REACHED;
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break;
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case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
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case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
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case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
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case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
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case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
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case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
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case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
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case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
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case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
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case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
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case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
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case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
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case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
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case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
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case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
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case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
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case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
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case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
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case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
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case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
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case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
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case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
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case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
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case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
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case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
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case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
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case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
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default:
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break;
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}
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status = CAIRO_STATUS_NO_MEMORY;
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RETURN_NIL;
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#undef RETURN_NIL
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}
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static cairo_status_t
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_cairo_nil_span_renderer_render_row (
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void *abstract_renderer,
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int y,
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const cairo_half_open_span_t *coverages,
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unsigned num_coverages)
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{
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(void) y;
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(void) coverages;
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(void) num_coverages;
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return _cairo_span_renderer_status (abstract_renderer);
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}
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static cairo_status_t
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_cairo_nil_span_renderer_finish (void *abstract_renderer)
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{
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return _cairo_span_renderer_status (abstract_renderer);
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}
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cairo_status_t
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_cairo_span_renderer_status (void *abstract_renderer)
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{
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cairo_span_renderer_t *renderer = abstract_renderer;
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return renderer->status;
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}
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cairo_status_t
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_cairo_span_renderer_set_error (
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void *abstract_renderer,
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cairo_status_t error)
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{
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cairo_span_renderer_t *renderer = abstract_renderer;
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if (error == CAIRO_STATUS_SUCCESS) {
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ASSERT_NOT_REACHED;
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}
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if (renderer->status == CAIRO_STATUS_SUCCESS) {
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renderer->render_row = _cairo_nil_span_renderer_render_row;
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renderer->finish = _cairo_nil_span_renderer_finish;
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renderer->status = error;
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}
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return renderer->status;
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}
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static void
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_cairo_nil_span_renderer_init (cairo_span_renderer_t *renderer,
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cairo_status_t status)
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{
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renderer->destroy = _cairo_nil_destroy;
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renderer->status = CAIRO_STATUS_SUCCESS;
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status = _cairo_span_renderer_set_error (renderer, status);
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}
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cairo_span_renderer_t *
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_cairo_span_renderer_create_in_error (cairo_status_t status)
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{
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#define RETURN_NIL {\
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static cairo_span_renderer_t nil;\
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_cairo_nil_span_renderer_init (&nil, status);\
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return &nil;\
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}
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switch (status) {
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case CAIRO_STATUS_SUCCESS:
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case CAIRO_STATUS_LAST_STATUS:
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ASSERT_NOT_REACHED;
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break;
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case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
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case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
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case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
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case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
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case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
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case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
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case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
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case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
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case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
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case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
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case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
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case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
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case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
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case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
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case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
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case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
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case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
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case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
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case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
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case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
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case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
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case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
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case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
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case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
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case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
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case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
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case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
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case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
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default:
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break;
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}
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status = CAIRO_STATUS_NO_MEMORY;
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RETURN_NIL;
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#undef RETURN_NIL
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}
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