mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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9c10b54e5e
Add new get_extents function to the surface backend interface. Add function to query current clip_extents. Implement the new get_extents function for each backend. Save the clip extents from set_clip_region and implement _cairo_surface_get_clip_extents. Abstract away the evil XGetGeometry roundtrip in _cairo_xlib_surface_get_size. Rewrite a couple of tests to call cairo_paint.
137 lines
3.9 KiB
C
137 lines
3.9 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: Owen Taylor <otaylor@redhat.com>
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*/
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#include "cairo-test.h"
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#include "stdio.h"
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/* The test matrix is
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*
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* A) Horizontal B) 5° C) 45° D) Vertical
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* 1) Rotated 0° 2) Rotated 45° C) Rotated 90°
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* a) 2 stop b) 3 stop
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*
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* A1a B1a C1a D1a
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* A2a B2a C2a D2a
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* A3a B3a C3a D3a
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* A1b B1b C1b D1b
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* A2b B2b C2b D2b
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* A3b B3b C3b D3b
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*/
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static const double gradient_angles[] = { 0, 45, 90 };
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#define N_GRADIENT_ANGLES 3
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static const double rotate_angles[] = { 0, 45, 90 };
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#define N_ROTATE_ANGLES 3
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static const int n_stops[] = { 2, 3 };
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#define N_N_STOPS 2
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#define UNIT_SIZE 75
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#define UNIT_SIZE 75
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#define PAD 5
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#define WIDTH N_GRADIENT_ANGLES * UNIT_SIZE + (N_GRADIENT_ANGLES + 1) * PAD
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#define HEIGHT N_N_STOPS * N_ROTATE_ANGLES * UNIT_SIZE + (N_N_STOPS * N_ROTATE_ANGLES + 1) * PAD
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cairo_test_t test = {
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"linear-gradient",
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"Tests the drawing of linear gradients",
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WIDTH, HEIGHT
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};
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static void
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draw_unit (cairo_t *cr,
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double gradient_angle,
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double rotate_angle,
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int n_stops)
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{
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cairo_pattern_t *pattern;
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cairo_rectangle (cr, 0, 0, 1, 1);
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cairo_clip (cr);
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cairo_new_path(cr);
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cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
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cairo_rectangle (cr, 0, 0, 1, 1);
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cairo_fill (cr);
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cairo_translate (cr, 0.5, 0.5);
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cairo_scale (cr, 1 / 1.5, 1 / 1.5);
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cairo_rotate (cr, rotate_angle);
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pattern = cairo_pattern_create_linear (-0.5 * cos (gradient_angle), -0.5 * sin (gradient_angle),
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0.5 * cos (gradient_angle), 0.5 * sin (gradient_angle));
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if (n_stops == 2) {
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cairo_pattern_add_color_stop_rgb (pattern, 0.,
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0.3, 0.3, 0.3);
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cairo_pattern_add_color_stop_rgb (pattern, 1.,
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1.0, 1.0, 1.0);
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} else {
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cairo_pattern_add_color_stop_rgb (pattern, 0.,
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1.0, 0.0, 0.0);
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cairo_pattern_add_color_stop_rgb (pattern, 0.5,
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1.0, 1.0, 1.0);
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cairo_pattern_add_color_stop_rgb (pattern, 1.,
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0.0, 0.0, 1.0);
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}
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_rectangle (cr, -0.5, -0.5, 1, 1);
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cairo_fill (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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int i, j, k;
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cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
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cairo_paint (cr);
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for (i = 0; i < N_GRADIENT_ANGLES; i++)
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for (j = 0; j < N_ROTATE_ANGLES; j++)
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for (k = 0; k < N_N_STOPS; k++) {
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cairo_save (cr);
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cairo_translate (cr,
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PAD + (PAD + UNIT_SIZE) * i,
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PAD + (PAD + UNIT_SIZE) * (N_ROTATE_ANGLES * k + j));
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cairo_scale (cr, UNIT_SIZE, UNIT_SIZE);
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draw_unit (cr,
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gradient_angles[i] * M_PI / 180.,
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rotate_angles[j] * M_PI / 180.,
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n_stops[k]);
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cairo_restore (cr);
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}
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return CAIRO_TEST_SUCCESS;
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}
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int
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main (void)
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{
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return cairo_test (&test, draw);
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}
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