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/*
* Copyright © 2008 Adrian Johnson
*
* 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.
*
* Author: Adrian Johnson <ajohnson@redneon.com>
*/
#include "cairo-test.h"
#define CIRCLE_SIZE 10
#define PAD 2
#define WIDTH (CIRCLE_SIZE*6.5 + PAD)
#define HEIGHT (CIRCLE_SIZE*7.0 + PAD)
static void
draw_circle (cairo_t *cr, double x, double y)
{
cairo_save (cr);
cairo_translate (cr, x, y);
cairo_arc (cr, 0, 0, CIRCLE_SIZE / 2, 0., 2. * M_PI);
cairo_fill (cr);
cairo_restore (cr);
}
static void
draw_image_circle (cairo_t *cr, cairo_surface_t *source, double x, double y)
{
cairo_save (cr);
cairo_set_source_surface (cr, source, x, y);
cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REFLECT);
cairo_rectangle (cr, x, y, CIRCLE_SIZE, CIRCLE_SIZE);
cairo_fill (cr);
cairo_restore (cr);
}
static void
draw_circles (cairo_t *cr)
{
draw_circle (cr, 0, -CIRCLE_SIZE*0.1);
draw_circle (cr, CIRCLE_SIZE*0.4, CIRCLE_SIZE*0.25);
draw_circle (cr, CIRCLE_SIZE*2, 0);
draw_circle (cr, CIRCLE_SIZE*4, 0);
draw_circle (cr, CIRCLE_SIZE*6, 0);
}
static void
draw_image_circles (cairo_t *cr, cairo_surface_t *source)
{
draw_image_circle (cr, source, 0, -CIRCLE_SIZE*0.1);
draw_image_circle (cr, source, CIRCLE_SIZE*0.4, CIRCLE_SIZE*0.25);
draw_image_circle (cr, source, CIRCLE_SIZE*2, 0);
draw_image_circle (cr, source, CIRCLE_SIZE*4, 0);
draw_image_circle (cr, source, CIRCLE_SIZE*6, 0);
}
/* For each of circle and fallback_circle we draw:
* - two overlapping
* - one isolated
* - one off the page
* - one overlapping the edge of the page.
*
* We also draw a circle and fallback_circle overlapping each other.
*
* Circles are drawn in green. An opaque color and CAIRO_OPERATOR_OVER
* is used to ensure they will be emitted as a vectors in PS/PDF.
*
* Fallback circles are drawn in red. CAIRO_OPERATOR_ADD is used to
* ensure they will be emitted as a fallback image in PS/PDF.
*
* In order to trigger a fallback for SVG, we need to use a surface with
* REFLECT.
*/
static cairo_surface_t *
surface_create (cairo_t *target)
{
cairo_surface_t *surface;
cairo_t *cr;
surface = cairo_surface_create_similar (cairo_get_target (target),
CAIRO_CONTENT_COLOR_ALPHA,
CIRCLE_SIZE, CIRCLE_SIZE);
cr = cairo_create (surface);
cairo_surface_destroy (surface);
cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
draw_circle (cr, CIRCLE_SIZE/2, CIRCLE_SIZE/2);
surface = cairo_surface_reference (cairo_get_target (cr));
cairo_destroy (cr);
return surface;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *surface;
cairo_translate (cr, PAD, PAD);
cairo_save (cr);
/* Draw overlapping circle and fallback circle */
cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
draw_circle (cr, CIRCLE_SIZE*0.5, CIRCLE_SIZE*1.5);
cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
draw_circle (cr, CIRCLE_SIZE*0.75, CIRCLE_SIZE*1.75);
/* Draw circles */
cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_translate (cr, CIRCLE_SIZE*2.5, CIRCLE_SIZE*0.6);
draw_circles (cr);
/* Draw fallback circles */
cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
cairo_translate (cr, 0, CIRCLE_SIZE*2);
draw_circles (cr);
cairo_restore (cr);
cairo_translate (cr, 0, CIRCLE_SIZE * 3.5);
/* Draw using fallback surface */
surface = surface_create (cr);
cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
draw_circle (cr, CIRCLE_SIZE*0.5, CIRCLE_SIZE*1.5);
cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
draw_image_circle (cr, surface, CIRCLE_SIZE/4, CIRCLE_SIZE + CIRCLE_SIZE/4);
/* Draw circles */
cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_translate (cr, CIRCLE_SIZE*2.5, CIRCLE_SIZE*0.6);
draw_circles (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
cairo_translate (cr, -CIRCLE_SIZE/2, CIRCLE_SIZE*1.5);
draw_image_circles (cr, surface);
cairo_surface_destroy (surface);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (finer_grained_fallbacks,
"Test that multiple PS/PDF fallback images in various locations are correct",
"fallbacks", /* keywords */
NULL, /* requirements */
WIDTH, HEIGHT,
NULL, draw)
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