diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/xlib-expose-event.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/xlib-expose-event.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/xlib-expose-event.c b/libs/cairo-1.16.0/test/xlib-expose-event.c new file mode 100644 index 0000000..1de23e0 --- /dev/null +++ b/libs/cairo-1.16.0/test/xlib-expose-event.c @@ -0,0 +1,196 @@ +/* + * Copyright © 2008 Chris Wilson + * + * 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 + * Chris Wilson not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Chris Wilson makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk> + */ + +/* This test tries to emulate the behaviour of most toolkits; it tries + * to simulate typical usage of a single surface with multiple exposures. + * + * The first goal of the test is to reproduce the XSetClipMask(NULL) bug + * reintroduced in 1.6.2 (but was originally fixed in 40558cb15). As I've + * made the same mistake again, it is worth adding a regression test... + */ + +#include "cairo-test.h" + +#include <stdio.h> +#include <stdlib.h> + +#include "cairo.h" + +#include "buffer-diff.h" + +#define SIZE 160 +#define NLOOPS 10 + +static const char *png_filename = "romedalen.png"; + +static void +draw_mask (cairo_t *cr) +{ + cairo_surface_t *surface; + cairo_t *cr2; + + surface = cairo_surface_create_similar (cairo_get_group_target (cr), + CAIRO_CONTENT_ALPHA, + 50, 50); + cr2 = cairo_create (surface); + cairo_surface_destroy (surface); + + cairo_rectangle (cr2, + 0, 0, + 40, 40); + cairo_rectangle (cr2, + 10, 10, + 40, 40); + cairo_clip (cr2); + + cairo_move_to (cr2, 0, 25); + cairo_line_to (cr2, 50, 25); + cairo_move_to (cr2, 25, 0); + cairo_line_to (cr2, 25, 50); + cairo_set_source_rgb (cr2, 1, 1, 1); + cairo_stroke (cr2); + + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_mask_surface (cr, cairo_get_target (cr2), 50, 50); + cairo_destroy (cr2); +} + +static cairo_surface_t * +clone_similar_surface (cairo_surface_t * target, cairo_surface_t *surface) +{ + cairo_t *cr; + cairo_surface_t *similar; + + similar = cairo_surface_create_similar (target, + cairo_surface_get_content (surface), + cairo_image_surface_get_width (surface), + cairo_image_surface_get_height (surface)); + + cr = cairo_create (similar); + cairo_surface_destroy (similar); + + cairo_set_source_surface (cr, surface, 0, 0); + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_paint (cr); + + similar = cairo_surface_reference (cairo_get_target (cr)); + cairo_destroy (cr); + + return similar; +} + +static void +draw_image (const cairo_test_context_t *ctx, + cairo_t *cr, + cairo_surface_t *image) +{ + cairo_set_source_surface (cr, image, 0, 0); + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_paint (cr); +} + +static void +draw (const cairo_test_context_t *ctx, + cairo_t *cr, + cairo_surface_t *image, + cairo_rectangle_t *region, + int n_regions) +{ + cairo_save (cr); + if (region != NULL) { + int i; + for (i = 0; i < n_regions; i++) { + cairo_rectangle (cr, + region[i].x, region[i].y, + region[i].width, region[i].height); + } + cairo_clip (cr); + } + cairo_push_group (cr); + draw_image (ctx, cr, image); + draw_mask (cr); + cairo_pop_group_to_source (cr); + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_paint (cr); + cairo_restore (cr); +} + +static cairo_test_status_t +draw_func (cairo_t *cr, int width, int height) +{ + cairo_rectangle_t region[4]; + const cairo_test_context_t *ctx; + cairo_surface_t *source, *image; + int i, j; + + ctx = cairo_test_get_context (cr); + + source = cairo_test_create_surface_from_png (ctx, png_filename); + image = clone_similar_surface (cairo_get_group_target (cr), source); + cairo_surface_destroy (source); + + cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR); + draw (ctx, cr, image, NULL, 0); + for (i = 0; i < NLOOPS; i++) { + for (j = 0; j < NLOOPS; j++) { + region[0].x = i * SIZE / NLOOPS; + region[0].y = i * SIZE / NLOOPS; + region[0].width = SIZE / 4; + region[0].height = SIZE / 4; + + region[1].x = j * SIZE / NLOOPS; + region[1].y = j * SIZE / NLOOPS; + region[1].width = SIZE / 4; + region[1].height = SIZE / 4; + + region[2].x = i * SIZE / NLOOPS; + region[2].y = j * SIZE / NLOOPS; + region[2].width = SIZE / 4; + region[2].height = SIZE / 4; + + region[3].x = j * SIZE / NLOOPS; + region[3].y = i * SIZE / NLOOPS; + region[3].width = SIZE / 4; + region[3].height = SIZE / 4; + + draw (ctx, cr, image, region, 4); + } + } + + cairo_pop_group_to_source (cr); + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_paint (cr); + + cairo_surface_destroy (image); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (xlib_expose_event, + "Emulate a typical expose event", + "xlib", /* keywords */ + NULL, /* requirements */ + SIZE, SIZE, + NULL, draw_func) |