mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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Merge branch 'test-hairline' into 'master'
test/hairline.c: Use Unix line endings & add copyright header See merge request cairo/cairo!234
This commit is contained in:
Uli Schlachter
commit
2c24c18b14
1 changed files with 199 additions and 175 deletions
374
test/hairline.c
374
test/hairline.c
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@ -1,175 +1,199 @@
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#include "cairo-test.h"
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/**
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* draw:
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* @cr: a #cairo_t
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* @width: Width of the test image
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* @height: Height of the test image
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* @scale_width: Percentage to scale the width
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* @scale_height: Percentage to scale the height
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* @fit_to_scale: Whether or not to adjust the image to fit in the scale parameters
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* regardless of the scale parameters
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* @correct_scale: Tests if the hairlines render correctly regardless of
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* whether or not the scale is set "correctly", as per
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* https://cairographics.org/cookbook/ellipses/
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*/
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height, double scale_width, double scale_height, cairo_bool_t fit_to_scale, cairo_bool_t correct_scale)
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{
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cairo_matrix_t save_matrix;
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double fit_width = fit_to_scale ? scale_width : 1.0;
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double fit_height = fit_to_scale ? scale_height : 1.0;
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double fit_max = MAX(fit_width, fit_height);
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double dash[] = {3.0};
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if (cairo_get_hairline (cr) == TRUE) {
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return CAIRO_TEST_ERROR;
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}
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/* Clear background */
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_set_line_width (cr, 100.0); /* If everything is working right, this value should never get used */
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/* Hairline sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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}
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cairo_scale (cr, scale_width, scale_height);
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cairo_set_hairline (cr, TRUE);
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if (cairo_get_hairline (cr) == FALSE) {
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return CAIRO_TEST_ERROR;
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}
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cairo_move_to (cr, 0, 0);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width/2, 0);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, 0, height/fit_height/2);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width/4, 0);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, M_PI*0.5, M_PI*1.0);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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/* Dashed sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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cairo_scale (cr, scale_width, scale_height);
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}
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cairo_set_dash (cr, dash, 1, 0);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, M_PI*1.0, M_PI*1.5);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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/* Control sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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cairo_scale (cr, scale_width, scale_height);
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}
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cairo_set_line_width (cr, 3.0);
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cairo_set_hairline (cr, FALSE);
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if (cairo_get_hairline (cr) == TRUE) {
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return CAIRO_TEST_ERROR;
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}
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cairo_set_dash (cr, 0, 0, 0);
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cairo_move_to (cr, width/fit_width, height/fit_height);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width/2, height/fit_height);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width, height/fit_height/2);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width*0.75, height/fit_height);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, M_PI*1.5, M_PI*2.0);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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/* Dashed sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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cairo_scale (cr, scale_width, scale_height);
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}
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cairo_set_dash (cr, dash, 1, 0);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, 0, M_PI*0.5);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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return CAIRO_TEST_SUCCESS;
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}
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static cairo_test_status_t
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draw_typical (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 1.0, 1.0, TRUE, TRUE);
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}
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static cairo_test_status_t
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draw_scaled (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 0.5, 0.5, FALSE, TRUE);
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}
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static cairo_test_status_t
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draw_anisotropic (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 2.0, 5.0, TRUE, TRUE);
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}
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static cairo_test_status_t
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draw_anisotropic_incorrect (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 2.0, 5.0, TRUE, FALSE);
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}
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CAIRO_TEST (hairline,
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"Tests hairlines are drawn at a single pixel width",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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49, 49,
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NULL, draw_typical)
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CAIRO_TEST (hairline_big,
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"Tests hairlines are drawn at a single pixel width",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_typical)
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CAIRO_TEST (hairline_scaled,
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"Tests hairlines are drawn at a single pixel width",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_scaled)
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CAIRO_TEST (hairline_anisotropic,
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"Tests hairlines with a really lopsided scale parameter",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_anisotropic)
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CAIRO_TEST (hairline_anisotropic_incorrect,
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"Tests hairlines with a really lopsided scale parameter",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_anisotropic_incorrect)
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/*
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* Copyright © 2021 Rick Yorgason
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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, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following 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 OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "cairo-test.h"
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/**
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* draw:
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* @cr: a #cairo_t
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* @width: Width of the test image
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* @height: Height of the test image
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* @scale_width: Percentage to scale the width
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* @scale_height: Percentage to scale the height
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* @fit_to_scale: Whether or not to adjust the image to fit in the scale parameters
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* regardless of the scale parameters
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* @correct_scale: Tests if the hairlines render correctly regardless of
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* whether or not the scale is set "correctly", as per
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* https://cairographics.org/cookbook/ellipses/
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*/
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height, double scale_width, double scale_height, cairo_bool_t fit_to_scale, cairo_bool_t correct_scale)
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{
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cairo_matrix_t save_matrix;
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double fit_width = fit_to_scale ? scale_width : 1.0;
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double fit_height = fit_to_scale ? scale_height : 1.0;
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double fit_max = MAX(fit_width, fit_height);
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double dash[] = {3.0};
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if (cairo_get_hairline (cr) == TRUE) {
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return CAIRO_TEST_ERROR;
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}
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/* Clear background */
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_set_line_width (cr, 100.0); /* If everything is working right, this value should never get used */
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/* Hairline sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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}
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cairo_scale (cr, scale_width, scale_height);
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cairo_set_hairline (cr, TRUE);
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if (cairo_get_hairline (cr) == FALSE) {
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return CAIRO_TEST_ERROR;
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}
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cairo_move_to (cr, 0, 0);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width/2, 0);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, 0, height/fit_height/2);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width/4, 0);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, M_PI*0.5, M_PI*1.0);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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/* Dashed sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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cairo_scale (cr, scale_width, scale_height);
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}
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cairo_set_dash (cr, dash, 1, 0);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, M_PI*1.0, M_PI*1.5);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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/* Control sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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cairo_scale (cr, scale_width, scale_height);
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}
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cairo_set_line_width (cr, 3.0);
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cairo_set_hairline (cr, FALSE);
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if (cairo_get_hairline (cr) == TRUE) {
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return CAIRO_TEST_ERROR;
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}
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cairo_set_dash (cr, 0, 0, 0);
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cairo_move_to (cr, width/fit_width, height/fit_height);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width/2, height/fit_height);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width, height/fit_height/2);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_move_to (cr, width/fit_width*0.75, height/fit_height);
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cairo_line_to (cr, width/fit_width/2, height/fit_height/2);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, M_PI*1.5, M_PI*2.0);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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/* Dashed sample */
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if (correct_scale) {
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cairo_get_matrix (cr, &save_matrix);
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cairo_scale (cr, scale_width, scale_height);
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}
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cairo_set_dash (cr, dash, 1, 0);
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cairo_arc (cr, width/fit_width/2, height/fit_height/2, width/fit_max/4, 0, M_PI*0.5);
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if (correct_scale) {
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cairo_set_matrix (cr, &save_matrix);
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}
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cairo_stroke (cr);
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return CAIRO_TEST_SUCCESS;
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}
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static cairo_test_status_t
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draw_typical (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 1.0, 1.0, TRUE, TRUE);
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}
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static cairo_test_status_t
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draw_scaled (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 0.5, 0.5, FALSE, TRUE);
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}
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static cairo_test_status_t
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draw_anisotropic (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 2.0, 5.0, TRUE, TRUE);
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}
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static cairo_test_status_t
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draw_anisotropic_incorrect (cairo_t *cr, int width, int height)
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{
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return draw (cr, width, height, 2.0, 5.0, TRUE, FALSE);
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}
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CAIRO_TEST (hairline,
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"Tests hairlines are drawn at a single pixel width",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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49, 49,
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NULL, draw_typical)
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CAIRO_TEST (hairline_big,
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"Tests hairlines are drawn at a single pixel width",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_typical)
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CAIRO_TEST (hairline_scaled,
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"Tests hairlines are drawn at a single pixel width",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_scaled)
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CAIRO_TEST (hairline_anisotropic,
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"Tests hairlines with a really lopsided scale parameter",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
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99, 99,
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NULL, draw_anisotropic)
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CAIRO_TEST (hairline_anisotropic_incorrect,
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"Tests hairlines with a really lopsided scale parameter",
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"path, stroke, hairline", /* keywords */
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NULL, /* requirements */
|
||||
99, 99,
|
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NULL, draw_anisotropic_incorrect)
|
||||
|
|
|
|||
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