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0ce4face45
Some tests hand-code ARRAY_LENGTH(). It is now provided by cairo-test.h, so it can be reused.
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/*
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* Copyright © 2005 Red Hat, Inc.
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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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* Red Hat, Inc. 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. Red Hat, Inc. 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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* RED HAT, INC. 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 RED HAT, INC. 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: Carl D. Worth <cworth@cworth.org>
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*/
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#include "cairo-test.h"
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#define LINE_WIDTH 8.
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#define SIZE (5 * LINE_WIDTH)
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#define PAD (2 * LINE_WIDTH)
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static void
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make_path (cairo_t *cr)
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{
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cairo_move_to (cr, 0., 0.);
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cairo_rel_line_to (cr, 0., SIZE);
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cairo_rel_line_to (cr, SIZE, 0.);
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cairo_close_path (cr);
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cairo_move_to (cr, 2 * LINE_WIDTH, 0.);
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cairo_rel_line_to (cr, 3 * LINE_WIDTH, 0.);
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cairo_rel_line_to (cr, 0., 3 * LINE_WIDTH);
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}
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static void
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draw_three_shapes (cairo_t *cr)
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{
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cairo_save (cr);
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make_path (cr);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
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cairo_stroke (cr);
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cairo_translate (cr, SIZE + PAD, 0.);
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make_path (cr);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_stroke (cr);
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cairo_translate (cr, SIZE + PAD, 0.);
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make_path (cr);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
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cairo_stroke (cr);
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cairo_restore (cr);
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}
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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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double dash[] = {1.5 * LINE_WIDTH};
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/* We draw in the default black, so paint white first. */
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cairo_save (cr);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
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cairo_paint (cr);
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cairo_restore (cr);
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cairo_translate (cr, PAD, PAD);
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cairo_set_dash (cr, dash, ARRAY_LENGTH (dash), - 2 * LINE_WIDTH);
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cairo_set_line_width (cr, LINE_WIDTH);
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draw_three_shapes (cr);
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cairo_translate (cr, 0, SIZE + 2 * PAD);
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cairo_save (cr);
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{
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cairo_set_dash (cr, dash, ARRAY_LENGTH (dash), - 2 * LINE_WIDTH);
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cairo_set_line_width (cr, LINE_WIDTH);
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cairo_scale (cr, 1, 2);
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draw_three_shapes (cr);
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}
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cairo_restore (cr);
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cairo_translate (cr, 0, 2 * (SIZE + PAD));
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cairo_save (cr);
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{
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cairo_scale (cr, 1, 2);
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cairo_set_dash (cr, dash, ARRAY_LENGTH (dash), - 2 * LINE_WIDTH);
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cairo_set_line_width (cr, LINE_WIDTH);
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draw_three_shapes (cr);
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}
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cairo_restore (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (dash_scale,
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"Test interactions of cairo_set_dash and cairo_scale, (in particular with a non-uniformly scaled pen)",
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"dash, stroke, transform", /* keywords */
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NULL, /* requirements */
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3 * (PAD + SIZE) + PAD,
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PAD + 5 * SIZE + 2 * (2 * PAD) + PAD,
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NULL, draw)
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