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| author | Chris Craik <ccraik@google.com> | 2013-02-25 19:12:47 -0800 |
|---|---|---|
| committer | Chris Craik <ccraik@google.com> | 2013-02-27 11:13:03 -0800 |
| commit | 3e010f3138593cc6953039ee0e3db8ee31881296 (patch) | |
| tree | 3761f1081c57732f4126eb086836c74cb91de44c /include/ui | |
| parent | 68a029edbbd162f2ca783733df37a44d5082ddee (diff) | |
| download | frameworks_native-3e010f3138593cc6953039ee0e3db8ee31881296.zip frameworks_native-3e010f3138593cc6953039ee0e3db8ee31881296.tar.gz frameworks_native-3e010f3138593cc6953039ee0e3db8ee31881296.tar.bz2 | |
Add createTJunctionFreeRegion
T-junction free regions are useful for rendering regions with various
geometric transformations, and the Region's span-ordered, sorted rect
list supports T-junction free storage without modification.
This approach creates a T-junction free region by splitting each
rectangle that is part of a vertical T-junction. This approach is two
pass (up and down) so that divisions can trickle up/down to other
adjacent spans.
Change-Id: Ifcf5e6fe0034c96b00ef09a4433b2b0fce8f4300
Diffstat (limited to 'include/ui')
| -rw-r--r-- | include/ui/Region.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/ui/Region.h b/include/ui/Region.h index 43a4450..ffcd429 100644 --- a/include/ui/Region.h +++ b/include/ui/Region.h @@ -39,7 +39,9 @@ public: Region(const Region& rhs); explicit Region(const Rect& rhs); ~Region(); - + + static Region createTJunctionFreeRegion(const Region& r); + Region& operator = (const Region& rhs); inline bool isEmpty() const { return getBounds().isEmpty(); } |