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8ded35fd69
Carefully handle subsurfaces of a recording surface through the analysis and paginated surfaces so that we can generate a native pattern for the vector backends, demonstrated by the PostScript backend. Nothing remarkable, just a lot of bookkeeping to track the wrapped surface types and to apply the correct offsets when generating the subsurface pattern.
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/*
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* Copyright 2009 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Intel not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Intel makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* INTEL CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL INTEL CORPORATION BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Chris Wilson <chris@chris-wilson.co.uk>
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*/
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#include "cairo-test.h"
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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cairo_surface_t *region[5];
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const char *text = "Cairo";
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int i;
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 0, 0, 0);
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for (i = 0; i < 5; i++) {
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cairo_t *cr_region;
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cairo_text_extents_t extents;
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char buf[2] = { text[i], '\0' };
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region[i] = cairo_surface_create_for_rectangle (cairo_get_target (cr),
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20 * i, 0, 20, 20);
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cr_region = cairo_create (region[i]);
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cairo_surface_destroy (region[i]);
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cairo_select_font_face (cr_region, "@cairo:",
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CAIRO_FONT_WEIGHT_NORMAL,
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CAIRO_FONT_SLANT_NORMAL);
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cairo_set_font_size (cr_region, 20);
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cairo_text_extents (cr_region, buf, &extents);
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cairo_move_to (cr_region,
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10 - (extents.width/2 + extents.x_bearing),
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10 - (extents.height/2 + extents.y_bearing));
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cairo_show_text (cr_region, buf);
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region[i] = cairo_surface_reference (cairo_get_target (cr_region));
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cairo_destroy (cr_region);
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}
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for (i = 0; i < 5; i++) {
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cairo_set_source_surface (cr, region[5-i-1], 20 * i, 20);
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cairo_paint (cr);
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}
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for (i = 0; i < 5; i++) {
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cairo_set_source_surface (cr, region[5-i-1], 20 * i, 40);
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cairo_paint_with_alpha (cr, .5);
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}
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for (i = 0; i < 5; i++)
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cairo_surface_destroy (region[i]);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (subsurface,
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"Tests clipping of both source and destination using subsurfaces",
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"subsurface", /* keywords */
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NULL, /* requirements */
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100, 60,
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NULL, draw)
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