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/*
* Copyright 2009 Benjamin Otte
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Benjamin Otte <otte@gnome.org>
*/
#include "cairo-test.h"
typedef enum {
CLEAR,
CLEARED,
PAINTED
} surface_type_t;
#define SIZE 10
#define SPACE 5
static cairo_surface_t *
create_surface (cairo_t *target, cairo_content_t content, surface_type_t type)
{
cairo_surface_t *surface;
cairo_t *cr;
surface = cairo_surface_create_similar (cairo_get_target (target),
content,
SIZE, SIZE);
if (type == CLEAR)
return surface;
cr = cairo_create (surface);
cairo_surface_destroy (surface);
cairo_set_source_rgb (cr, 0.75, 0, 0);
cairo_paint (cr);
if (type == PAINTED)
goto DONE;
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
DONE:
surface = cairo_surface_reference (cairo_get_target (cr));
cairo_destroy (cr);
return surface;
}
static void
paint (cairo_t *cr, cairo_surface_t *surface)
{
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
}
static void
fill (cairo_t *cr, cairo_surface_t *surface)
{
cairo_set_source_surface (cr, surface, 0, 0);
cairo_rectangle (cr, -SPACE, -SPACE, SIZE + 2 * SPACE, SIZE + 2 * SPACE);
cairo_fill (cr);
}
static void
stroke (cairo_t *cr, cairo_surface_t *surface)
{
cairo_set_source_surface (cr, surface, 0, 0);
cairo_set_line_width (cr, 2.0);
cairo_rectangle (cr, 1, 1, SIZE - 2, SIZE - 2);
cairo_stroke (cr);
}
static void
mask (cairo_t *cr, cairo_surface_t *surface)
{
cairo_set_source_rgb (cr, 0, 0, 0.75);
cairo_mask_surface (cr, surface, 0, 0);
}
static void
mask_self (cairo_t *cr, cairo_surface_t *surface)
{
cairo_set_source_surface (cr, surface, 0, 0);
cairo_mask_surface (cr, surface, 0, 0);
}
static void
glyphs (cairo_t *cr, cairo_surface_t *surface)
{
cairo_set_source_surface (cr, surface, 0, 0);
cairo_select_font_face (cr,
"@cairo:",
CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size (cr, 16);
cairo_translate (cr, 0, SIZE);
cairo_show_text (cr, "C");
}
typedef void (* operation_t) (cairo_t *cr, cairo_surface_t *surface);
static operation_t operations[] = {
paint,
fill,
stroke,
mask,
mask_self,
glyphs
};
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_content_t contents[] = { CAIRO_CONTENT_COLOR_ALPHA, CAIRO_CONTENT_COLOR, CAIRO_CONTENT_ALPHA };
unsigned int content, type, ops;
cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
cairo_paint (cr);
cairo_translate (cr, SPACE, SPACE);
for (type = 0; type <= PAINTED; type++) {
for (content = 0; content < ARRAY_LENGTH (contents); content++) {
cairo_surface_t *surface;
surface = create_surface (cr, contents[content], type);
cairo_save (cr);
for (ops = 0; ops < ARRAY_LENGTH (operations); ops++) {
cairo_save (cr);
operations[ops] (cr, surface);
cairo_restore (cr);
cairo_translate (cr, 0, SIZE + SPACE);
}
cairo_restore (cr);
cairo_translate (cr, SIZE + SPACE, 0);
cairo_surface_destroy (surface);
}
}
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (clear_source,
"Check painting with cleared surfaces works as expected",
NULL, /* keywords */
NULL, /* requirements */
(SIZE + SPACE) * 9 + SPACE, ARRAY_LENGTH (operations) * (SIZE + SPACE) + SPACE,
NULL, draw)
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