static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *target_surface;
cairo_t *cr2, *cr3;
target_surface = cairo_get_group_target (cr);
cr2 = cairo_create (target_surface);
/* Draw a diagonal line and clip to it */
cairo_move_to (cr2, BORDER, BORDER);
cairo_line_to (cr2, BORDER + LINE_WIDTH, BORDER);
cairo_line_to (cr2, SIZE - BORDER, SIZE - BORDER);
cairo_line_to (cr2, SIZE - BORDER - LINE_WIDTH, SIZE - BORDER);
cairo_clip (cr2);
cairo_set_source_rgb (cr2, 0, 0, 1); /* Blue */
cairo_paint (cr2);
/* Clipping affects this cairo_t */
cairo_set_source_rgb (cr2, 1, 1, 1); /* White */
cairo_rectangle (cr2,
SIZE / 2 - LINE_WIDTH / 2, BORDER,
LINE_WIDTH, SIZE - 2 * BORDER);
cairo_fill (cr2);
/* But doesn't affect another cairo_t that we create temporarily for
* the same surface
*/
cr3 = cairo_create (target_surface);
cairo_set_source_rgb (cr3, 1, 1, 1); /* White */
cairo_rectangle (cr3,
SIZE - BORDER - LINE_WIDTH, BORDER,
LINE_WIDTH, SIZE - 2 * BORDER);
cairo_fill (cr3);
_propagate_status (cr, cr3);
cairo_destroy (cr3);
_propagate_status (cr, cr2);
cairo_destroy (cr2);
/* And doesn't affect anything after this cairo_t is destroyed */
cairo_set_source_rgb (cr, 1, 1, 1); /* White */
cairo_rectangle (cr,
BORDER, BORDER,
LINE_WIDTH, SIZE - 2 * BORDER);
cairo_fill (cr);
return CAIRO_TEST_SUCCESS;
}
static void
use_similar (cairo_t *cr,
double red,
double green,
double blue)
{
cairo_t *cr2;
if (cairo_status (cr))
return;
cr2 = _cairo_create_similar (cr, 1, 1);
_draw (cr2, red, green, blue);
_propagate_status (cr, cr2);
cairo_destroy (cr2);
}
static void
use_image (cairo_t *cr,
cairo_format_t format,
double red,
double green,
double blue)
{
cairo_t *cr2;
if (cairo_status (cr))
return;
cr2 = _cairo_create_image (cr, format, 1, 1);
_draw (cr2, red, green, blue);
_propagate_status (cr, cr2);
cairo_destroy (cr2);
}