/* * Copyright © 2008 Mozilla Corporation * * 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 * Mozilla Corporation not be used in advertising or publicity pertaining to * distribution of the software without specific, written prior * permission. Mozilla Corporation makes no representations about the * suitability of this software for any purpose. It is provided "as * is" without express or implied warranty. * * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION 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. * * Authors: Michael Ventnor, Jeff Muizelaar */ #include "cairo-test.h" #define WIDTH 20 #define HEIGHT 20 static cairo_test_status_t draw (cairo_t *cr, int width, int height) { cairo_surface_t *second; cairo_t *second_cr; /* fill with black so we don't need an rgb test case */ cairo_set_source_rgb (cr, 0, 0, 0); cairo_paint (cr); cairo_scale (cr, 0.5, 0.5); /* draw the first rectangle */ cairo_set_source_rgb (cr, 0, 0, 0.4); cairo_rectangle (cr, 6, 6, 10, 10); cairo_fill (cr); /* adjust the offset so that the second rectangle will fit on the surface */ second = cairo_image_surface_create (CAIRO_FORMAT_A8, 10, 10); cairo_surface_set_device_offset (second, -6, -6); /* draw the second rectangle: * this rectangle should end up in the same place as the rectangle above * independent of the device offset of the surface it is painted on*/ second_cr = cairo_create (second); cairo_surface_destroy (second); cairo_rectangle (second_cr, 6, 6, 10, 10); cairo_fill (second_cr); /* paint the second rectangle on top of the first rectangle */ cairo_set_source_rgb (cr, 0.5, 0.5, 0); cairo_mask_surface (cr, cairo_get_target (second_cr), 0, 0); cairo_destroy (second_cr); return CAIRO_TEST_SUCCESS; } CAIRO_TEST (device_offset_scale, "Test that the device-offset transform is transformed by the ctm.", "device-offset", /* keywords */ NULL, /* requirements */ WIDTH, HEIGHT, NULL, draw)