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cairo/test/xlib-expose-event.c
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/* | |
* 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 <stdio.h> | |
#include <stdlib.h> | |
#include "cairo.h" | |
#include "cairo-xlib.h" | |
#include "cairo-test.h" | |
#include "cairo-boilerplate-xlib.h" | |
#include "buffer-diff.h" | |
#define SIZE 160 | |
#define NLOOPS 10 | |
static const char *png_filename = "romedalen.png"; | |
static cairo_bool_t | |
check_visual (Display *dpy) | |
{ | |
Visual *visual = DefaultVisual (dpy, DefaultScreen (dpy)); | |
if ((visual->red_mask == 0xff0000 && | |
visual->green_mask == 0x00ff00 && | |
visual->blue_mask == 0x0000ff) || | |
(visual->red_mask == 0x0000ff && | |
visual->green_mask == 0x00ff00 && | |
visual->blue_mask == 0xff0000)) | |
return 1; | |
else | |
return 0; | |
} | |
static void | |
clear (cairo_surface_t *surface) | |
{ | |
cairo_t *cr = cairo_create (surface); | |
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR); | |
cairo_paint (cr); | |
cairo_destroy (cr); | |
} | |
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); | |
cairo_boilerplate_xlib_surface_disable_render (surface); | |
cr2 = cairo_create (surface); | |
cairo_surface_destroy (surface); | |
/* This complex clip and forcing of fallbacks is to reproduce bug | |
* http://bugs.freedesktop.org/show_bug.cgi?id=10921 | |
*/ | |
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 *surface, *similar; | |
surface = cairo_test_create_surface_from_png (ctx, png_filename); | |
similar = clone_similar_surface (cairo_get_group_target (cr), surface); | |
cairo_surface_destroy (surface); | |
cairo_set_source_surface (cr, similar, 0, 0); | |
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); | |
cairo_paint (cr); | |
cairo_surface_destroy (similar); | |
} | |
static void | |
draw (const cairo_test_context_t *ctx, | |
cairo_surface_t *surface, | |
cairo_rectangle_t *region, | |
int n_regions) | |
{ | |
cairo_t *cr = cairo_create (surface); | |
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); | |
draw_mask (cr); | |
cairo_pop_group_to_source (cr); | |
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); | |
cairo_paint (cr); | |
cairo_destroy (cr); | |
} | |
static cairo_test_status_t | |
draw_func (cairo_t *cr, int width, int height) | |
{ | |
Display *dpy; | |
Drawable drawable; | |
int screen; | |
cairo_surface_t *surface; | |
cairo_rectangle_t region[4]; | |
int i, j; | |
const cairo_test_context_t *ctx; | |
ctx = cairo_test_get_context (cr); | |
surface = cairo_get_target (cr); | |
if (cairo_surface_get_type (surface) != CAIRO_SURFACE_TYPE_XLIB) | |
return CAIRO_TEST_UNTESTED; | |
dpy = cairo_xlib_surface_get_display (surface); | |
if (! check_visual (dpy)) { | |
cairo_test_log (ctx, "xlib-expose-event: default visual is not RGB24 or BGR24, skipping\n"); | |
return CAIRO_TEST_UNTESTED; | |
} | |
screen = DefaultScreen (dpy); | |
drawable = XCreatePixmap (dpy, DefaultRootWindow (dpy), | |
SIZE, SIZE, DefaultDepth (dpy, screen)); | |
surface = cairo_xlib_surface_create (dpy, | |
drawable, | |
DefaultVisual (dpy, screen), | |
SIZE, SIZE); | |
clear (surface); | |
draw (ctx, surface, 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, surface, region, 4); | |
} | |
} | |
cairo_set_source_surface (cr, surface, 0, 0); | |
cairo_surface_destroy (surface); | |
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); | |
cairo_paint (cr); | |
XFreePixmap (dpy, drawable); | |
return CAIRO_TEST_SUCCESS; | |
} | |
CAIRO_TEST (xlib_expose_event, | |
"Emulate a typical expose event", | |
"xlib", /* keywords */ | |
NULL, /* requirements */ | |
SIZE, SIZE, | |
NULL, draw_func) |