diff options
Diffstat (limited to 'include/ui/Region.h')
| -rw-r--r-- | include/ui/Region.h | 51 |
1 files changed, 30 insertions, 21 deletions
diff --git a/include/ui/Region.h b/include/ui/Region.h index f242f18..43a4450 100644 --- a/include/ui/Region.h +++ b/include/ui/Region.h @@ -23,28 +23,29 @@ #include <utils/Vector.h> #include <ui/Rect.h> +#include <utils/Flattenable.h> namespace android { // --------------------------------------------------------------------------- +class SharedBuffer; class String8; // --------------------------------------------------------------------------- -class Region +class Region : public LightFlattenable<Region> { public: Region(); Region(const Region& rhs); explicit Region(const Rect& rhs); - explicit Region(const void* buffer); ~Region(); Region& operator = (const Region& rhs); - inline bool isEmpty() const { return mBounds.isEmpty(); } - inline bool isRect() const { return mStorage.isEmpty(); } + inline bool isEmpty() const { return getBounds().isEmpty(); } + inline bool isRect() const { return mStorage.size() == 1; } - inline Rect getBounds() const { return mBounds; } + inline Rect getBounds() const { return mStorage[mStorage.size() - 1]; } inline Rect bounds() const { return getBounds(); } // the region becomes its bounds @@ -106,28 +107,32 @@ public: /* various ways to access the rectangle list */ + + // STL-like iterators typedef Rect const* const_iterator; - - const_iterator begin() const; - const_iterator end() const; + const_iterator begin() const; + const_iterator end() const; - /* no user serviceable parts here... */ - - size_t getRects(Vector<Rect>& rectList) const; - Rect const* getArray(size_t* count) const; + // returns an array of rect which has the same life-time has this + // Region object. + Rect const* getArray(size_t* count) const; + // returns a SharedBuffer as well as the number of rects. + // ownership is transfered to the caller. + // the caller must call SharedBuffer::release() to free the memory. + SharedBuffer const* getSharedBuffer(size_t* count) const; + + /* no user serviceable parts here... */ // add a rectangle to the internal list. This rectangle must // be sorted in Y and X and must not make the region invalid. void addRectUnchecked(int l, int t, int r, int b); - // flatten/unflatten a region to/from a raw buffer - ssize_t write(void* buffer, size_t size) const; - static ssize_t writeEmpty(void* buffer, size_t size); - - ssize_t read(const void* buffer); - static bool isEmpty(void* buffer); + inline bool isFixedSize() const { return false; } + size_t getSize() const; + status_t flatten(void* buffer) const; + status_t unflatten(void const* buffer, size_t size); void dump(String8& out, const char* what, uint32_t flags=0) const; void dump(const char* what, uint32_t flags=0) const; @@ -156,10 +161,14 @@ private: static void translate(Region& reg, int dx, int dy); static void translate(Region& dst, const Region& reg, int dx, int dy); - static bool validate(const Region& reg, const char* name); + static bool validate(const Region& reg, + const char* name, bool silent = false); - Rect mBounds; - Vector<Rect> mStorage; + // mStorage is a (manually) sorted array of Rects describing the region + // with an extra Rect as the last element which is set to the + // bounds of the region. However, if the region is + // a simple Rect then mStorage contains only that rect. + Vector<Rect> mStorage; }; |