add localmatrix-shader

samplecode/SamplePatch.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
@@ skipping 278 matching lines @@
 
         paint.setShader(NULL);
         paint.setAntiAlias(true);
         paint.setStrokeWidth(SkIntToScalar(5));
         canvas->drawPoints(SkCanvas::kPoints_PointMode, SK_ARRAY_COUNT(fPts), fPts, paint);
 
         canvas->translate(0, SkIntToScalar(300));
 
         paint.setAntiAlias(false);
         paint.setShader(fShader1);
+        {
+            SkMatrix m;
+            m.setSkew(1, 0);
+            SkShader* s = SkShader::CreateLocalMatrixShader(paint.getShader(), m);
+            paint.setShader(s)->unref();
+        }
+        {
+            static int gAngle;
+            SkMatrix m;
+            m.setRotate(SkIntToScalar(gAngle++));
+            SkShader* s = SkShader::CreateLocalMatrixShader(paint.getShader(), m);
+            paint.setShader(s)->unref();
+        }
         patch.setBounds(fSize1.fX, fSize1.fY);
         drawpatches(canvas, paint, 10, 10, &patch);
+        
+        this->inval(NULL);
     }
 
     class PtClick : public Click {
     public:
         int fIndex;
         PtClick(SkView* view, int index) : Click(view), fIndex(index) {}
     };
 
     static bool hittest(const SkPoint& pt, SkScalar x, SkScalar y) {
         return SkPoint::Length(pt.fX - x, pt.fY - y) < SkIntToScalar(5);
@@ skipping 16 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new PatchView; }
 static SkViewRegister reg(MyFactory);