| /* |
| * Copyright © Jeff Muizelaar |
| * |
| * 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. |
| * |
| * JEFF MUIZELAAR 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. |
| * |
| * Authors: Jeff Muizelaar <jeff@infidigm.net> |
| * Carl Worth <cworth@cworth.org> |
| */ |
| |
| #include "cairo-test.h" |
| |
| #define MASK_WIDTH 8 |
| #define MASK_HEIGHT 8 |
| |
| static unsigned char mask[MASK_WIDTH * MASK_HEIGHT] = { |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, |
| }; |
| |
| static cairo_test_status_t |
| check_status (const cairo_test_context_t *ctx, |
| cairo_status_t status, |
| cairo_status_t expected) |
| { |
| if (status == expected) |
| return CAIRO_TEST_SUCCESS; |
| |
| cairo_test_log (ctx, |
| "Error: Expected status value %d (%s), received %d (%s)\n", |
| expected, |
| cairo_status_to_string (expected), |
| status, |
| cairo_status_to_string (status)); |
| return CAIRO_TEST_FAILURE; |
| } |
| |
| static cairo_test_status_t |
| test_surface_with_width_and_stride (const cairo_test_context_t *ctx, |
| int width, int stride, |
| cairo_status_t expected) |
| { |
| cairo_test_status_t status; |
| cairo_surface_t *surface; |
| cairo_t *cr; |
| int len; |
| unsigned char *data; |
| |
| cairo_test_log (ctx, |
| "Creating surface with width %d and stride %d\n", |
| width, stride); |
| |
| len = stride; |
| if (len < 0) |
| len = -len; |
| data = xmalloc (len); |
| |
| surface = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_A8, |
| width, 1, stride); |
| cr = cairo_create (surface); |
| |
| cairo_paint (cr); |
| |
| status = check_status (ctx, cairo_surface_status (surface), expected); |
| if (status) |
| goto BAIL; |
| |
| status = check_status (ctx, cairo_status (cr), expected); |
| if (status) |
| goto BAIL; |
| |
| BAIL: |
| cairo_destroy (cr); |
| cairo_surface_destroy (surface); |
| free (data); |
| return status; |
| } |
| |
| static cairo_test_status_t |
| draw (cairo_t *cr, int dst_width, int dst_height) |
| { |
| int stride, row; |
| unsigned char *src, *dst, *mask_aligned; |
| cairo_surface_t *surface; |
| |
| /* Now test actually drawing through our mask data, allocating and |
| * copying with the proper stride. */ |
| stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8, |
| MASK_WIDTH); |
| |
| mask_aligned = xmalloc (stride * MASK_HEIGHT); |
| |
| src = mask; |
| dst = mask_aligned; |
| for (row = 0; row < MASK_HEIGHT; row++) { |
| memcpy (dst, src, MASK_WIDTH); |
| src += MASK_WIDTH; |
| dst += stride; |
| } |
| |
| surface = cairo_image_surface_create_for_data (mask_aligned, |
| CAIRO_FORMAT_A8, |
| MASK_WIDTH, |
| MASK_HEIGHT, |
| stride); |
| |
| /* Paint background blue */ |
| cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ |
| cairo_paint (cr); |
| |
| /* Then paint red through our mask */ |
| cairo_set_source_rgb (cr, 1, 0, 0); /* red */ |
| cairo_mask_surface (cr, surface, 0, 0); |
| cairo_surface_destroy (surface); |
| |
| free (mask_aligned); |
| |
| return CAIRO_TEST_SUCCESS; |
| } |
| |
| static cairo_test_status_t |
| preamble (cairo_test_context_t *ctx) |
| { |
| cairo_test_status_t status = CAIRO_TEST_SUCCESS; |
| int test_width; |
| |
| for (test_width = 0; test_width < 40; test_width++) { |
| int stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8, |
| test_width); |
| cairo_status_t expected; |
| |
| /* First create a surface using the width as the stride, |
| * (most of these should fail). |
| */ |
| expected = (stride == test_width) ? |
| CAIRO_STATUS_SUCCESS : CAIRO_STATUS_INVALID_STRIDE; |
| |
| status = test_surface_with_width_and_stride (ctx, |
| test_width, |
| test_width, |
| expected); |
| if (status) |
| return status; |
| |
| status = test_surface_with_width_and_stride (ctx, |
| test_width, |
| -test_width, |
| expected); |
| if (status) |
| return status; |
| |
| |
| /* Then create a surface using the correct stride, |
| * (should always succeed). |
| */ |
| status = test_surface_with_width_and_stride (ctx, |
| test_width, |
| stride, |
| CAIRO_STATUS_SUCCESS); |
| if (status) |
| return status; |
| |
| status = test_surface_with_width_and_stride (ctx, |
| test_width, |
| -stride, |
| CAIRO_STATUS_SUCCESS); |
| if (status) |
| return status; |
| } |
| |
| return status; |
| } |
| |
| CAIRO_TEST (a8_mask, |
| "test masks of CAIRO_FORMAT_A8", |
| "alpha, mask", /* keywords */ |
| NULL, /* requirements */ |
| 8, 8, |
| preamble, draw) |