add cairo

1 files changed, 185 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/unbounded-operator.c b/libs/cairo-1.16.0/test/unbounded-operator.c
new file mode 100644
index 0000000..ac1c50d
--- /dev/null
+++ b/libs/cairo-1.16.0/test/unbounded-operator.c
@@ -0,0 +1,185 @@
+/*
+ * 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>
+ */
+
+#include "cairo-test.h"
+#include <math.h>
+#include <stdio.h>
+
+#define WIDTH 16
+#define HEIGHT 16
+#define PAD 2
+
+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_save (cr2);
+    cairo_set_source_rgba (cr2, 0, 0, 0, 0); /* transparent */
+    cairo_set_operator (cr2, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr2);
+    cairo_restore (cr2);
+
+    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 block_width = (int)(0.33 * WIDTH + 0.5);
+    double block_height = (int)(0.33 * HEIGHT + 0.5);
+    int i, j;
+
+    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 (*const draw_funcs[])(cairo_t *cr, int x, int y) = {
+    draw_mask,
+    draw_glyphs,
+    draw_polygon,
+    draw_rects
+};
+
+static cairo_operator_t operators[] = {
+    CAIRO_OPERATOR_IN, CAIRO_OPERATOR_OUT,
+    CAIRO_OPERATOR_DEST_IN, CAIRO_OPERATOR_DEST_ATOP
+};
+
+#define IMAGE_WIDTH (ARRAY_LENGTH (operators) * (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 (operators); 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, operators[i]);
+	    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
+
+	    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 (unbounded_operator,
+	    "Operators with an effect for transparent source/mask",
+	    "operator", /* keywords */
+	    NULL, /* requirements */
+	    IMAGE_WIDTH, IMAGE_HEIGHT,
+	    NULL, draw)