!228 添加图片圆形裁剪接口

Merge pull request !228 from pssea/master

frameworks/components/ui_view.cpp

@@ -938,6 +938,7 @@ bool UIView::GetBitmap(ImageInfo& bitmap)
     newBufferInfo.width = bufferWidth;
     newBufferInfo.height = bufferHeight;
     newBufferInfo.mode = bufferInfo->mode;
+    newBufferInfo.stride = bufferWidth *  DrawUtils::GetByteSizeByColorMode(bitmap.header.colorMode);
 
     RootView::GetInstance()->SaveDrawContext();
     RootView::GetInstance()->UpdateBufferInfo(&newBufferInfo);

frameworks/engines/gfx/gfx_engine_manager.cpp

@@ -17,6 +17,7 @@
 
 #include <cstdlib>
 
+#include "draw/clip_utils.h"
 #include "draw/draw_arc.h"
 #include "draw/draw_curve.h"
 #include "draw/draw_line.h"
@@ -79,6 +80,15 @@ void BaseGfxEngine::DrawTransform(BufferInfo& dst,
         opacity, transMap, dataInfo);
 }
 
+void BaseGfxEngine::ClipCircle(const ImageInfo* info, float x, float y, float radius)
+{
+    ClipPath path;
+    path.Circle({x, y}, radius);
+    ClipImageBlitter blitter(info);
+    ClipUtils clip;
+    clip.PerformScan(path, blitter);
+}
+
 void BaseGfxEngine::Blit(BufferInfo& dst,
                          const Point& dstPos,
                          const BufferInfo& src,

interfaces/innerkits/engines/gfx/gfx_engine_manager.h

@@ -106,6 +106,9 @@ public:
                                const TransformMap& transMap,
                                const TransformDataInfo& dataInfo);
 
+    // x/y: center of a circle
+    virtual void ClipCircle(const ImageInfo* info, float x, float y, float radius);
+
     virtual void Blit(BufferInfo& dst,
                       const Point& dstPos,
                       const BufferInfo& src,