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-rw-r--r--libs/cairo-1.16.0/test/operator-source.c250
1 files changed, 250 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/operator-source.c b/libs/cairo-1.16.0/test/operator-source.c
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+/*
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Kristian Høgsberg <krh@redhat.com>
+ * Owen Taylor <otaylor@redhat.com>
+ * Uli Schlachter <psychon@znc.in>
+ */
+
+#include "cairo-test.h"
+#include <math.h>
+#include <stdio.h>
+
+#define WIDTH 16
+#define HEIGHT 16
+#define PAD 2
+
+static void
+set_solid_pattern (cairo_t *cr, int x, int y)
+{
+ cairo_set_source_rgb (cr, 1.0, 0, 0.0);
+}
+
+static void
+set_translucent_pattern (cairo_t *cr, int x, int y)
+{
+ cairo_set_source_rgba (cr, 1, 0, 0, 0.5);
+}
+
+static void
+set_gradient_pattern (cairo_t *cr, int x, int y)
+{
+ cairo_pattern_t *pattern;
+
+ pattern = cairo_pattern_create_linear (x, y, x + WIDTH, y + HEIGHT);
+ cairo_pattern_add_color_stop_rgba (pattern, 0.2, 1, 0, 0, 1);
+ cairo_pattern_add_color_stop_rgba (pattern, 0.8, 1, 0, 0, 0.0);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+}
+
+static void
+set_surface_pattern (cairo_t *cr, int x, int y)
+{
+ cairo_surface_t *source_surface;
+ cairo_t *cr2;
+
+ double width = (int)(0.6 * WIDTH);
+ double height = (int)(0.6 * HEIGHT);
+ x += 0.2 * WIDTH;
+ y += 0.2 * HEIGHT;
+
+ source_surface = cairo_surface_create_similar (cairo_get_group_target (cr),
+ CAIRO_CONTENT_COLOR_ALPHA,
+ width, height);
+ cr2 = cairo_create (source_surface);
+ cairo_surface_destroy (source_surface);
+
+ cairo_set_source_rgb (cr2, 1, 0, 0); /* red */
+ cairo_paint (cr2);
+
+ cairo_set_source_rgb (cr2, 1, 1, 1); /* white */
+
+ cairo_arc (cr2, 0.5 * width, 0.5 * height, 0.5 * height, 0, 2 * M_PI);
+ cairo_fill (cr2);
+
+ cairo_set_source_surface (cr, cairo_get_target (cr2), x, y);
+ cairo_destroy (cr2);
+}
+
+static void
+draw_mask (cairo_t *cr, int x, int y)
+{
+ cairo_surface_t *mask_surface;
+ cairo_t *cr2;
+
+ double width = (int)(0.9 * WIDTH);
+ double height = (int)(0.9 * HEIGHT);
+ x += 0.05 * WIDTH;
+ y += 0.05 * HEIGHT;
+
+ mask_surface = cairo_surface_create_similar (cairo_get_group_target (cr),
+ CAIRO_CONTENT_ALPHA,
+ width, height);
+ cr2 = cairo_create (mask_surface);
+ cairo_surface_destroy (mask_surface);
+
+ cairo_set_source_rgb (cr2, 1, 1, 1); /* white */
+
+ cairo_arc (cr2, 0.5 * width, 0.5 * height, 0.45 * height, 0, 2 * M_PI);
+ cairo_fill (cr2);
+
+ cairo_mask_surface (cr, cairo_get_target (cr2), x, y);
+ cairo_destroy (cr2);
+}
+
+static void
+draw_glyphs (cairo_t *cr, int x, int y)
+{
+ cairo_text_extents_t extents;
+
+ cairo_set_font_size (cr, 0.8 * HEIGHT);
+
+ cairo_text_extents (cr, "FG", &extents);
+ cairo_move_to (cr,
+ x + floor ((WIDTH - extents.width) / 2 + 0.5) - extents.x_bearing,
+ y + floor ((HEIGHT - extents.height) / 2 + 0.5) - extents.y_bearing);
+ cairo_show_text (cr, "FG");
+}
+
+static void
+draw_polygon (cairo_t *cr, int x, int y)
+{
+ double width = (int)(0.9 * WIDTH);
+ double height = (int)(0.9 * HEIGHT);
+ x += 0.05 * WIDTH;
+ y += 0.05 * HEIGHT;
+
+ cairo_new_path (cr);
+ cairo_move_to (cr, x, y);
+ cairo_line_to (cr, x, y + height);
+ cairo_line_to (cr, x + width / 2, y + 3 * height / 4);
+ cairo_line_to (cr, x + width, y + height);
+ cairo_line_to (cr, x + width, y);
+ cairo_line_to (cr, x + width / 2, y + height / 4);
+ cairo_close_path (cr);
+ cairo_fill (cr);
+}
+
+static void
+draw_rects (cairo_t *cr, int x, int y, double offset)
+{
+ double block_width = (int)(0.33 * WIDTH + 0.5) - offset/3;
+ double block_height = (int)(0.33 * HEIGHT + 0.5) - offset/3;
+ int i, j;
+
+ x += offset/2;
+ y += offset/2;
+
+ for (i = 0; i < 3; i++)
+ for (j = 0; j < 3; j++)
+ if ((i + j) % 2 == 0)
+ cairo_rectangle (cr,
+ x + block_width * i, y + block_height * j,
+ block_width, block_height);
+
+ cairo_fill (cr);
+}
+
+static void
+draw_aligned_rects (cairo_t *cr, int x, int y)
+{
+ draw_rects (cr, x, y, 0);
+}
+
+static void
+draw_unaligned_rects (cairo_t *cr, int x, int y)
+{
+ draw_rects (cr, x, y, 2.1);
+}
+
+static void (* const pattern_funcs[])(cairo_t *cr, int x, int y) = {
+ set_solid_pattern,
+ set_translucent_pattern,
+ set_gradient_pattern,
+ set_surface_pattern,
+};
+
+static void (* const draw_funcs[])(cairo_t *cr, int x, int y) = {
+ draw_mask,
+ draw_glyphs,
+ draw_polygon,
+ draw_aligned_rects,
+ draw_unaligned_rects
+};
+
+#define IMAGE_WIDTH (ARRAY_LENGTH (pattern_funcs) * (WIDTH + PAD) + PAD)
+#define IMAGE_HEIGHT (ARRAY_LENGTH (draw_funcs) * (HEIGHT + PAD) + PAD)
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ const cairo_test_context_t *ctx = cairo_test_get_context (cr);
+ size_t i, j, x, y;
+ cairo_pattern_t *pattern;
+
+ cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
+ CAIRO_FONT_SLANT_NORMAL,
+ CAIRO_FONT_WEIGHT_NORMAL);
+
+ for (j = 0; j < ARRAY_LENGTH (draw_funcs); j++) {
+ for (i = 0; i < ARRAY_LENGTH (pattern_funcs); i++) {
+ x = i * (WIDTH + PAD) + PAD;
+ y = j * (HEIGHT + PAD) + PAD;
+
+ cairo_save (cr);
+
+ pattern = cairo_pattern_create_linear (x + WIDTH, y,
+ x, y + HEIGHT);
+ cairo_pattern_add_color_stop_rgba (pattern, 0.2,
+ 0.0, 0.0, 1.0, 1.0); /* Solid blue */
+ cairo_pattern_add_color_stop_rgba (pattern, 0.8,
+ 0.0, 0.0, 1.0, 0.0); /* Transparent blue */
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+
+ cairo_rectangle (cr, x, y, WIDTH, HEIGHT);
+ cairo_fill_preserve (cr);
+ cairo_clip (cr);
+
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ pattern_funcs[i] (cr, x, y);
+ draw_funcs[j] (cr, x, y);
+ if (cairo_status (cr))
+ cairo_test_log (ctx, "%d %d HERE!\n", (int)i, (int)j);
+
+ cairo_restore (cr);
+ }
+ }
+
+ if (cairo_status (cr) != CAIRO_STATUS_SUCCESS)
+ cairo_test_log (ctx, "%d %d .HERE!\n", (int)i, (int)j);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (operator_source,
+ "Test of CAIRO_OPERATOR_SOURCE",
+ "operator", /* keywords */
+ NULL, /* requirements */
+ IMAGE_WIDTH, IMAGE_HEIGHT,
+ NULL, draw)
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