grab from latest android

git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 164 insertions, 0 deletions

diff --git a/samplecode/SamplePath.cpp b/samplecode/SamplePath.cpp
new file mode 100644
index 0000000000..04d006aa50
--- /dev/null
+++ b/samplecode/SamplePath.cpp
@@ -0,0 +1,164 @@
+#include "SampleCode.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+#include "SkGradientShader.h"
+#include "SkGraphics.h"
+#include "SkImageDecoder.h"
+#include "SkPath.h"
+#include "SkPorterDuff.h"
+#include "SkRegion.h"
+#include "SkShader.h"
+#include "SkUtils.h"
+#include "SkXfermode.h"
+#include "SkShaderExtras.h"
+#include "SkColorPriv.h"
+#include "SkColorFilter.h"
+#include "SkTime.h"
+#include "SkTypeface.h"
+
+class PathView : public SkView {
+public:
+    int fDStroke, fStroke, fMinStroke, fMaxStroke;
+    SkPath fPath[6];
+    bool fShowHairline;
+    
+	PathView()
+    {
+        fShowHairline = false;
+        
+        fDStroke = 1;
+        fStroke = 10;
+        fMinStroke = 10;
+        fMaxStroke = 180;
+
+        const int V = 85;
+        
+        fPath[0].moveTo(SkIntToScalar(40), SkIntToScalar(70));
+        fPath[0].lineTo(SkIntToScalar(70), SkIntToScalar(70) + SK_Scalar1/1);
+        fPath[0].lineTo(SkIntToScalar(110), SkIntToScalar(70));
+        
+        fPath[1].moveTo(SkIntToScalar(40), SkIntToScalar(70));
+        fPath[1].lineTo(SkIntToScalar(70), SkIntToScalar(70) - SK_Scalar1/1);
+        fPath[1].lineTo(SkIntToScalar(110), SkIntToScalar(70));
+        
+        fPath[2].moveTo(SkIntToScalar(V), SkIntToScalar(V));
+        fPath[2].lineTo(SkIntToScalar(50), SkIntToScalar(V));
+        fPath[2].lineTo(SkIntToScalar(50), SkIntToScalar(50));
+        
+        fPath[3].moveTo(SkIntToScalar(50), SkIntToScalar(50));
+        fPath[3].lineTo(SkIntToScalar(50), SkIntToScalar(V));
+        fPath[3].lineTo(SkIntToScalar(V), SkIntToScalar(V));
+        
+        fPath[4].moveTo(SkIntToScalar(50), SkIntToScalar(50));
+        fPath[4].lineTo(SkIntToScalar(50), SkIntToScalar(V));
+        fPath[4].lineTo(SkIntToScalar(52), SkIntToScalar(50));
+        
+        fPath[5].moveTo(SkIntToScalar(52), SkIntToScalar(50));
+        fPath[5].lineTo(SkIntToScalar(50), SkIntToScalar(V));
+        fPath[5].lineTo(SkIntToScalar(50), SkIntToScalar(50));
+    }
+    
+    virtual ~PathView()
+    {
+    }
+    
+    void nextStroke()
+    {
+        fStroke += fDStroke;
+        if (fStroke > fMaxStroke || fStroke < fMinStroke)
+            fDStroke = -fDStroke;
+    }
+    
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt)
+    {
+        if (SampleCode::TitleQ(*evt))
+        {
+            SampleCode::TitleR(evt, "Paths");
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+    
+    void drawBG(SkCanvas* canvas)
+    {
+        canvas->drawColor(0xFFDDDDDD);
+//        canvas->drawColor(SK_ColorWHITE);
+    }
+    
+    void drawPath(SkCanvas* canvas, const SkPath& path, SkPaint::Join j)
+    {
+        SkPaint paint;
+        
+        paint.setAntiAlias(true);
+        paint.setStyle(SkPaint::kStroke_Style);
+        paint.setStrokeJoin(j);
+        paint.setStrokeWidth(SkIntToScalar(fStroke));
+
+        if (fShowHairline)
+        {
+            SkPath  fill;
+            
+            paint.getFillPath(path, &fill);            
+            paint.setStrokeWidth(0);
+            canvas->drawPath(fill, paint);
+        }
+        else
+            canvas->drawPath(path, paint);
+        
+        paint.setColor(SK_ColorRED);
+        paint.setStrokeWidth(0);
+        canvas->drawPath(path, paint);
+    }
+    
+    virtual void onDraw(SkCanvas* canvas)
+    {
+        this->drawBG(canvas);
+        
+        canvas->translate(SkIntToScalar(50), SkIntToScalar(50));
+
+        static const SkPaint::Join gJoins[] = {
+            SkPaint::kBevel_Join,
+            SkPaint::kMiter_Join,
+            SkPaint::kRound_Join
+        };
+
+        for (int i = 0; i < SK_ARRAY_COUNT(gJoins); i++)
+        {
+            canvas->save();
+            for (int j = 0; j < SK_ARRAY_COUNT(fPath); j++)
+            {
+                this->drawPath(canvas, fPath[j], gJoins[i]);
+                canvas->translate(SkIntToScalar(200), 0);
+            }
+            canvas->restore();
+            
+            canvas->translate(0, SkIntToScalar(200));
+        }
+        
+        this->nextStroke();
+        this->inval(NULL);
+    }
+    
+    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) 
+    {
+        fShowHairline = !fShowHairline;
+        this->inval(NULL);
+        return this->INHERITED::onFindClickHandler(x, y);
+    }
+    
+    virtual bool onClick(Click* click) 
+    {
+        return this->INHERITED::onClick(click);
+    }
+    
+private:
+    typedef SkView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new PathView; }
+static SkViewRegister reg(MyFactory);
+