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| author | Alexander Larsson <alexl@redhat.com> | 2013-05-31 16:44:29 +0200 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2013-09-05 16:08:19 +0100 |
| commit | f0e2cd4494b1ac9a351d095fbeb53d702342d35c (patch) | |
| tree | ec2f33d8745e42f1fce0e51e065bacc91edcd4cf /src/cairo-pattern.c | |
| parent | 900fc4a890026e46a3b0a00967632f57074b8b93 (diff) | |
| download | cairo-f0e2cd4494b1ac9a351d095fbeb53d702342d35c.tar.gz | |
gstate: Handle device scale on surface as source
When creating a transformed pattern we must apply the device
transform *before* the transform set on the pattern itself, otherwise
e.g. its translation will not be affected by the device scale.
We also fix up the device_transform related handling in
_cairo_default_context_pop_group(). With a device scale we can
no longer just use the device_transform_inverse to unset the
device offset for the extents, so we make that a simple translate
instead.
We also remove some weird code that tries to handle the device
transform but seems unnecessary (maybe a workaround for applying
the device transform in the wrong order?). With that code removed
things work fine, but with it things get translated wrongly when
there is a scale.
Diffstat (limited to 'src/cairo-pattern.c')
| -rw-r--r-- | src/cairo-pattern.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cairo-pattern.c b/src/cairo-pattern.c index 940227d29..57b930b9e 100644 --- a/src/cairo-pattern.c +++ b/src/cairo-pattern.c @@ -2128,6 +2128,16 @@ cairo_pattern_get_extend (cairo_pattern_t *pattern) slim_hidden_def (cairo_pattern_get_extend); void +_cairo_pattern_pretransform (cairo_pattern_t *pattern, + const cairo_matrix_t *ctm) +{ + if (pattern->status) + return; + + cairo_matrix_multiply (&pattern->matrix, &pattern->matrix, ctm); +} + +void _cairo_pattern_transform (cairo_pattern_t *pattern, const cairo_matrix_t *ctm_inverse) { |