[cairo-commit] 2 commits - src/cairo.c test/Makefile.sources test/push-group-path-offset.c test/push-group-path-offset.ref.png
Benjamin Otte
company at kemper.freedesktop.org
Fri Jun 25 04:48:44 PDT 2010
src/cairo.c | 5 +-
test/Makefile.sources | 1
test/push-group-path-offset.c | 90 ++++++++++++++++++++++++++++++++++++
test/push-group-path-offset.ref.png |binary
4 files changed, 94 insertions(+), 2 deletions(-)
New commits:
commit 2e8571d95ca36f8ad9e20796990cdc0b3f763082
Author: Benjamin Otte <otte at redhat.com>
Date: Fri Jun 25 13:41:22 2010 +0200
push-group: Fix path translation when pushing a group with device offsets
With the previous code, the parent's device offset wasn't undone before
applying the new device offset.
Tested by push-group-path-offset test.
diff --git a/src/cairo.c b/src/cairo.c
index 9d28aee..d43c031 100644
--- a/src/cairo.c
+++ b/src/cairo.c
@@ -615,6 +615,7 @@ cairo_push_group_with_content (cairo_t *cr, cairo_content_t content)
cairo_surface_t *parent_surface;
const cairo_rectangle_int_t *clip_extents;
cairo_rectangle_int_t extents;
+ cairo_matrix_t matrix;
cairo_bool_t is_empty;
parent_surface = _cairo_gstate_get_target (cr->gstate);
@@ -646,8 +647,8 @@ cairo_push_group_with_content (cairo_t *cr, cairo_content_t content)
/* If we have a current path, we need to adjust it to compensate for
* the device offset just applied. */
- _cairo_path_fixed_transform (cr->path,
- &group_surface->device_transform);
+ cairo_matrix_init_translate (&matrix, -extents.x, -extents.y);
+ _cairo_path_fixed_transform (cr->path, &matrix);
}
/* create a new gstate for the redirect */
commit a9b8d1a94ea624ea8b12a125bdf70c6f248e7ca7
Author: Benjamin Otte <otte at redhat.com>
Date: Fri Jun 25 13:38:40 2010 +0200
test: Add a new test for a bug with device-offset tests
All the credit for this one goes to make distcheck
diff --git a/test/Makefile.sources b/test/Makefile.sources
index dba2f2c..d6c84a0 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -191,6 +191,7 @@ test_sources = \
png.c \
push-group.c \
push-group-color.c \
+ push-group-path-offset.c \
radial-gradient.c \
radial-gradient-extend.c \
radial-gradient-mask.c \
diff --git a/test/push-group-path-offset.c b/test/push-group-path-offset.c
new file mode 100644
index 0000000..ec6015b
--- /dev/null
+++ b/test/push-group-path-offset.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2010 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author: Benjamin Otte <otte at gnome.org>
+ */
+
+#include "cairo-test.h"
+
+#define DEVICE_OFFSET -10
+#define CLIP_OFFSET 25
+#define CLIP_SIZE 20
+
+#define WIDTH 50
+#define HEIGHT 50
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ cairo_surface_t *similar;
+ cairo_t *similar_cr;
+
+ similar = cairo_surface_create_similar (cairo_get_target (cr),
+ cairo_surface_get_content (cairo_get_target (cr)),
+ width, height);
+ cairo_surface_set_device_offset (similar, DEVICE_OFFSET, DEVICE_OFFSET);
+
+ similar_cr = cairo_create (similar);
+
+ /* Neutral gray background */
+ cairo_set_source_rgb (similar_cr, 0.51613, 0.55555, 0.51613);
+ cairo_paint (similar_cr);
+
+ /* add a rectangle */
+ cairo_rectangle (similar_cr, CLIP_OFFSET, CLIP_OFFSET, CLIP_SIZE, CLIP_SIZE);
+
+ /* clip to the rectangle */
+ cairo_clip_preserve (similar_cr);
+
+ /* push a group. We now have a device offset. */
+ cairo_push_group (similar_cr);
+
+ /* push a group again. This is where the bug used to happen. */
+
+ /* draw something */
+ cairo_set_source_rgb (similar_cr, 1, 0, 0);
+ cairo_fill (similar_cr);
+
+ /* make sure the stuff we drew ends up on the output */
+ cairo_pop_group_to_source (similar_cr);
+ cairo_paint (similar_cr);
+
+ cairo_pop_group_to_source (similar_cr);
+ cairo_paint (similar_cr);
+
+ cairo_destroy (similar_cr);
+
+ cairo_set_source_surface (cr, similar, DEVICE_OFFSET, DEVICE_OFFSET);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (push_group_path_offset,
+ "Exercises a bug in Cairo 1.9 where existing paths applied the target's"
+ " device offset twice when cairo_push_group() was called.",
+ "group, path", /* keywords */
+ NULL, /* requirements */
+ WIDTH, HEIGHT,
+ NULL, draw)
diff --git a/test/push-group-path-offset.ref.png b/test/push-group-path-offset.ref.png
new file mode 100644
index 0000000..b836a91
Binary files /dev/null and b/test/push-group-path-offset.ref.png differ
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