Added 3 new sample tests. http://codereview.appspot.com/4527092/

git-svn-id: http://skia.googlecode.com/svn/trunk@1464 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 90 insertions, 0 deletions

diff --git a/samplecode/SampleAnimatedGradient.cpp b/samplecode/SampleAnimatedGradient.cpp
new file mode 100644
index 0000000000..a7b2a4638f
--- /dev/null
+++ b/samplecode/SampleAnimatedGradient.cpp
@@ -0,0 +1,90 @@
+#include "SampleCode.h"
+#include "SkCanvas.h"
+#include "SkGradientShader.h"
+
+class GradientView : public SampleView {
+public:
+	GradientView() {
+        this->setBGColor(0xFFDDDDDD);
+	}
+	
+protected:
+	struct GradData {
+        int             fCount;
+        const SkColor*  fColors;
+        const SkScalar* fPos;
+    };
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt)  {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, "Gradients");
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+    virtual void onDrawContent(SkCanvas* canvas) {
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        paint.setStyle(SkPaint::kStroke_Style);
+        paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
+        paint.setStyle(SkPaint::kFill_Style);
+        
+        SkPoint p = SkPoint::Make(0,0);
+        SkPoint q = SkPoint::Make(100,100);
+        SkPoint pts[] = {p, q};
+        
+        SkScalar t, temp, x, y;
+        SkColor gColors[] = {
+            SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK
+        };
+        t =    SampleCode::GetAnimScalar(SkIntToScalar(2), SkIntToScalar(20));
+        temp = SampleCode::GetAnimScalar(SkIntToScalar(1), SkIntToScalar(8));
+        SkScalar step = SK_ScalarPI / (10);
+        SkScalar angle = t * step;
+        x =  SkScalarSinCos(angle, &y);
+        SkScalar colorPositions[] = { 0, 0.1 + x, 0.4 + y, 0.9 - x + y, 1.0};
+        GradData data = { 5, gColors, colorPositions };
+        
+        
+        SkRect r = { 0, 0, SkIntToScalar(200), SkIntToScalar(200) };
+        SkShader* shader1 = SkGradientShader::CreateLinear(
+                           pts, data.fColors, data.fPos,data.fCount, 
+                           SkShader::kMirror_TileMode);
+        paint.setShader(shader1)->unref();
+        
+        canvas->drawRect(r, paint);
+        
+        
+        SkPoint s = SkPoint::Make(100,100);
+        SkShader* shader2 = SkGradientShader::CreateRadial(
+                           s, 100, data.fColors, data.fPos, data.fCount, 
+                           SkShader::kMirror_TileMode);
+        paint.setShader(shader2)->unref();
+        canvas->translate(250, 0);
+        canvas->drawRect(r, paint);
+        
+        SkShader* shader3 = SkGradientShader::CreateTwoPointRadial(
+                           p, 0, q, 100, data.fColors, data.fPos, data.fCount,
+                           SkShader::kMirror_TileMode);
+        paint.setShader(shader3)->unref();
+        canvas->translate(0, 250);
+        canvas->drawRect(r, paint);
+        
+        SkShader* shader4 = SkGradientShader::CreateSweep(
+                            100, 100, data.fColors, data.fPos, data.fCount);
+ 
+        paint.setShader(shader4)->unref();
+        canvas->translate(-250, 0);
+        canvas->drawRect(r, paint);
+        
+        this->inval(NULL);		
+    }
+	
+private:
+    typedef SampleView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new GradientView; }
+static SkViewRegister reg(MyFactory);
\ No newline at end of file