/* * 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 */ /* 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 #include #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)