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941d3693fa
Hunting for a known bug in the xlib backend where it invalidly converts an argb32 source to rgb24. However, this does not appear to be that bug, but still a useful exercise nevertheless.
141 lines
4.4 KiB
C
141 lines
4.4 KiB
C
/*
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* Copyright © 2005 Mozilla Corporation
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* Copyright © 2009 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Mozilla Corporation not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Mozilla Corporation makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Vladimir Vukicevic <vladimir@pobox.com>
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* Chris Wilson <chris@chris-wilson.co.uk>
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*/
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#include "cairo-test.h"
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#define UNIT_SIZE 100
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#define PAD 5
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#define INNER_PAD 10
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#define WIDTH (UNIT_SIZE + PAD) + PAD
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#define HEIGHT (UNIT_SIZE + PAD) + PAD
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static cairo_pattern_t *
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argb32_source (void)
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{
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cairo_surface_t *surface;
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cairo_pattern_t *pattern;
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cairo_t *cr;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 16, 16);
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cr = cairo_create (surface);
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cairo_surface_destroy (surface);
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cairo_set_source_rgb (cr, 1, 0, 0);
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cairo_rectangle (cr, 8, 0, 8, 8);
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cairo_fill (cr);
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cairo_set_source_rgb (cr, 0, 1, 0);
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cairo_rectangle (cr, 0, 8, 8, 8);
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cairo_fill (cr);
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cairo_set_source_rgb (cr, 0, 0, 1);
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cairo_rectangle (cr, 8, 8, 8, 8);
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cairo_fill (cr);
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pattern = cairo_pattern_create_for_surface (cairo_get_target (cr));
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cairo_destroy (cr);
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return pattern;
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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)
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{
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cairo_pattern_t *gradient, *image;
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cairo_set_source_rgb (cr, 1,1,1);
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cairo_paint (cr);
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cairo_translate (cr, PAD, PAD);
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/* clip to the unit size */
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cairo_rectangle (cr, 0, 0,
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UNIT_SIZE, UNIT_SIZE);
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cairo_clip (cr);
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cairo_rectangle (cr, 0, 0,
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UNIT_SIZE, UNIT_SIZE);
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cairo_set_source_rgba (cr, 0, 0, 0, 1);
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cairo_set_line_width (cr, 2);
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cairo_stroke (cr);
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/* start a group */
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cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR);
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/* draw a gradient background */
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cairo_save (cr);
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cairo_translate (cr, INNER_PAD, INNER_PAD);
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cairo_new_path (cr);
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cairo_rectangle (cr, 0, 0,
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UNIT_SIZE - (INNER_PAD*2), UNIT_SIZE - (INNER_PAD*2));
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gradient = cairo_pattern_create_linear (UNIT_SIZE - (INNER_PAD*2), 0,
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UNIT_SIZE - (INNER_PAD*2), UNIT_SIZE - (INNER_PAD*2));
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cairo_pattern_add_color_stop_rgba (gradient, 0.0, 0.3, 0.3, 0.3, 1.0);
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cairo_pattern_add_color_stop_rgba (gradient, 1.0, 1.0, 1.0, 1.0, 1.0);
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cairo_set_source (cr, gradient);
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cairo_pattern_destroy (gradient);
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cairo_fill (cr);
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cairo_restore (cr);
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/* draw diamond */
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cairo_move_to (cr, UNIT_SIZE / 2, 0);
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cairo_line_to (cr, UNIT_SIZE , UNIT_SIZE / 2);
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cairo_line_to (cr, UNIT_SIZE / 2, UNIT_SIZE);
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cairo_line_to (cr, 0 , UNIT_SIZE / 2);
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cairo_close_path (cr);
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cairo_set_source_rgba (cr, 0, 0, 1, 1);
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cairo_fill (cr);
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/* draw circle */
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cairo_arc (cr,
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UNIT_SIZE / 2, UNIT_SIZE / 2,
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UNIT_SIZE / 3.5,
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0, M_PI * 2);
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cairo_set_source_rgba (cr, 1, 0, 0, 1);
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cairo_fill (cr);
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/* and put the image on top */
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cairo_translate (cr, UNIT_SIZE/2 - 8, UNIT_SIZE/2 - 8);
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image = argb32_source ();
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cairo_set_source (cr, image);
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cairo_pattern_destroy (image);
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cairo_paint (cr);
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cairo_pop_group_to_source (cr);
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cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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cairo_paint (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (push_group_color,
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"Verify that cairo_push_group_with_content works.",
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"group", /* keywords */
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NULL, /* requirements */
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WIDTH, HEIGHT,
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NULL, draw)
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