add cairo

1 files changed, 196 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/xlib-expose-event.c b/libs/cairo-1.16.0/test/xlib-expose-event.c
new file mode 100644
index 0000000..1de23e0
--- /dev/null
+++ b/libs/cairo-1.16.0/test/xlib-expose-event.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON 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.
+ *
+ * Author: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* This test tries to emulate the behaviour of most toolkits; it tries
+ * to simulate typical usage of a single surface with multiple exposures.
+ *
+ * The first goal of the test is to reproduce the XSetClipMask(NULL) bug
+ * reintroduced in 1.6.2 (but was originally fixed in 40558cb15). As I've
+ * made the same mistake again, it is worth adding a regression test...
+ */
+
+#include "cairo-test.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "cairo.h"
+
+#include "buffer-diff.h"
+
+#define SIZE 160
+#define NLOOPS 10
+
+static const char *png_filename = "romedalen.png";
+
+static void
+draw_mask (cairo_t *cr)
+{
+    cairo_surface_t *surface;
+    cairo_t *cr2;
+
+    surface = cairo_surface_create_similar (cairo_get_group_target (cr),
+	                                    CAIRO_CONTENT_ALPHA,
+					    50, 50);
+    cr2 = cairo_create (surface);
+    cairo_surface_destroy (surface);
+
+    cairo_rectangle (cr2,
+	             0, 0,
+	             40, 40);
+    cairo_rectangle (cr2,
+	             10, 10,
+	             40, 40);
+    cairo_clip (cr2);
+
+    cairo_move_to (cr2, 0, 25);
+    cairo_line_to (cr2, 50, 25);
+    cairo_move_to (cr2, 25, 0);
+    cairo_line_to (cr2, 25, 50);
+    cairo_set_source_rgb (cr2, 1, 1, 1);
+    cairo_stroke (cr2);
+
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    cairo_mask_surface (cr, cairo_get_target (cr2), 50, 50);
+    cairo_destroy (cr2);
+}
+
+static cairo_surface_t *
+clone_similar_surface (cairo_surface_t * target, cairo_surface_t *surface)
+{
+    cairo_t *cr;
+    cairo_surface_t *similar;
+
+    similar = cairo_surface_create_similar (target,
+	                              cairo_surface_get_content (surface),
+				      cairo_image_surface_get_width (surface),
+				      cairo_image_surface_get_height (surface));
+
+    cr = cairo_create (similar);
+    cairo_surface_destroy (similar);
+
+    cairo_set_source_surface (cr, surface, 0, 0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr);
+
+    similar = cairo_surface_reference (cairo_get_target (cr));
+    cairo_destroy (cr);
+
+    return similar;
+}
+
+static void
+draw_image (const cairo_test_context_t *ctx,
+	    cairo_t *cr,
+	    cairo_surface_t *image)
+{
+    cairo_set_source_surface (cr, image, 0, 0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr);
+}
+
+static void
+draw (const cairo_test_context_t *ctx,
+      cairo_t *cr,
+      cairo_surface_t *image,
+      cairo_rectangle_t *region,
+      int n_regions)
+{
+    cairo_save (cr);
+    if (region != NULL) {
+	int i;
+	for (i = 0; i < n_regions; i++) {
+	    cairo_rectangle (cr,
+			     region[i].x, region[i].y,
+			     region[i].width, region[i].height);
+	}
+	cairo_clip (cr);
+    }
+    cairo_push_group (cr);
+    draw_image (ctx, cr, image);
+    draw_mask (cr);
+    cairo_pop_group_to_source (cr);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr);
+    cairo_restore (cr);
+}
+
+static cairo_test_status_t
+draw_func (cairo_t *cr, int width, int height)
+{
+    cairo_rectangle_t region[4];
+    const cairo_test_context_t *ctx;
+    cairo_surface_t *source, *image;
+    int i, j;
+
+    ctx = cairo_test_get_context (cr);
+
+    source = cairo_test_create_surface_from_png (ctx, png_filename);
+    image = clone_similar_surface (cairo_get_group_target (cr), source);
+    cairo_surface_destroy (source);
+
+    cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR);
+    draw (ctx, cr, image, NULL, 0);
+    for (i = 0; i < NLOOPS; i++) {
+	for (j = 0; j < NLOOPS; j++) {
+	    region[0].x = i * SIZE / NLOOPS;
+	    region[0].y = i * SIZE / NLOOPS;
+	    region[0].width = SIZE / 4;
+	    region[0].height = SIZE / 4;
+
+	    region[1].x = j * SIZE / NLOOPS;
+	    region[1].y = j * SIZE / NLOOPS;
+	    region[1].width = SIZE / 4;
+	    region[1].height = SIZE / 4;
+
+	    region[2].x = i * SIZE / NLOOPS;
+	    region[2].y = j * SIZE / NLOOPS;
+	    region[2].width = SIZE / 4;
+	    region[2].height = SIZE / 4;
+
+	    region[3].x = j * SIZE / NLOOPS;
+	    region[3].y = i * SIZE / NLOOPS;
+	    region[3].width = SIZE / 4;
+	    region[3].height = SIZE / 4;
+
+	    draw (ctx, cr, image, region, 4);
+	}
+    }
+
+    cairo_pop_group_to_source (cr);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr);
+
+    cairo_surface_destroy (image);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (xlib_expose_event,
+	    "Emulate a typical expose event",
+	    "xlib", /* keywords */
+	    NULL, /* requirements */
+	    SIZE, SIZE,
+	    NULL, draw_func)