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Diffstat (limited to 'test/svg-clip.c')
| -rw-r--r-- | test/svg-clip.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/test/svg-clip.c b/test/svg-clip.c new file mode 100644 index 000000000..dff65f7cc --- /dev/null +++ b/test/svg-clip.c @@ -0,0 +1,152 @@ +/* + * Copyright © 2005 Red Hat, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of + * Red Hat, Inc. not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc. makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL, + * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR + * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Kristian Høgsberg <krh@redhat.com> + */ + +#include "cairo-test.h" + +#include <stdio.h> + +#include <cairo-svg.h> + +/* Test SVG clipping */ + +#define WIDTH_IN_POINTS 600 +#define HEIGHT_IN_POINTS 600 +#define BASENAME "svg-clip.out" + +static void +test_clip (cairo_t *cr, double width, double height) +{ + cairo_t *cr2; + + /* Basic test; set a square clip and draw a circle to be clipped + * against it.*/ + + cairo_rectangle (cr, 100, 100, 400, 400); + cairo_clip (cr); + cairo_arc (cr, 300, 300, 210, 0, 2 * M_PI); + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_fill (cr); + + /* Add a plus shaped clip path to the square clip and draw a big + * green square to test the new clip path. */ + + cairo_save (cr); + + cairo_rectangle (cr, 250, 100, 100, 400); + cairo_rectangle (cr, 100, 250, 400, 100); + cairo_clip (cr); + + cairo_rectangle (cr, 0, 0, 600, 600); + cairo_set_source_rgb (cr, 0, 1, 0); + cairo_fill (cr); + + cairo_restore (cr); + + /* Set a bezier shape in addition to the rectangle clip set before + * the cairo_save() to verify that we successfully removed the + * plus shaped clip path and can set a new clip.*/ + + cairo_move_to (cr, 600, 0); + cairo_curve_to (cr, 300, 600, 0, 300, 600, 0); + cairo_clip (cr); + + cairo_rectangle (cr, 0, 0, 600, 600); + cairo_set_source_rgb (cr, 0, 0, 1); + cairo_fill (cr); + + /* Create a new context for this surface to test overlapped + * drawing from two contexts */ + cr2 = cairo_create (cairo_get_group_target (cr)); + + /* Using the new context, draw a black vertical line, which should + * appear unclipped on top of everything drawn so far. */ + cairo_move_to (cr2, 110, 0); + cairo_line_to (cr2, 110, 600); + cairo_stroke (cr2); + + /* Using the first context, draw another black vertical line. + * This line should be clipped agaist the bezier clipping path set + * earlier. */ + cairo_set_source_rgb (cr, 0, 0, 0); + cairo_move_to (cr, 400, 0); + cairo_line_to (cr, 400, 600); + cairo_stroke (cr); + + cairo_destroy (cr2); + + /* Test reset clip. Draw a transparent black circle over + * everything. Specifically, make sure the circle extends outside + * the square clip set at the top of this function. */ + cairo_reset_clip (cr); + cairo_arc (cr, 300, 300, 220, 0, 2 * M_PI); + cairo_set_source_rgba (cr, 0, 0, 0, 0.2); + cairo_fill (cr); +} + +static cairo_test_status_t +preamble (cairo_test_context_t *ctx) +{ + cairo_t *cr; + cairo_surface_t *surface; + char *filename; + const char *path = cairo_test_mkdir (CAIRO_TEST_OUTPUT_DIR) ? CAIRO_TEST_OUTPUT_DIR : "."; + + if (! cairo_test_is_target_enabled (ctx, "svg11") && + ! cairo_test_is_target_enabled (ctx, "svg12")) + { + return CAIRO_TEST_UNTESTED; + } + + xasprintf (&filename, "%s/%s.svg", path, BASENAME); + surface = cairo_svg_surface_create (filename, + WIDTH_IN_POINTS, HEIGHT_IN_POINTS); + if (cairo_surface_status (surface)) { + cairo_test_log (ctx, + "Failed to create svg surface for file %s: %s\n", + filename, cairo_status_to_string (cairo_surface_status (surface))); + free (filename); + return CAIRO_TEST_FAILURE; + } + + cr = cairo_create (surface); + + test_clip (cr, WIDTH_IN_POINTS, HEIGHT_IN_POINTS); + cairo_show_page (cr); + + cairo_destroy (cr); + cairo_surface_destroy (surface); + + printf ("svg-clip: Please check %s to make sure it looks happy.\n", + filename); + free (filename); + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (svg_clip, + "Test SVG clipping", + "svg, clip", /* keywords */ + NULL, /* requirements */ + 0, 0, + preamble, NULL) |