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

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);

samplecode/SampleBox.cpp

@@ -0,0 +1,48 @@
+#include "SampleCode.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+
+class SimpleView : public SampleView {
+public:
+	SimpleView() {
+        this->setBGColor(0xFFDDDDDD);
+	}
+	
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt)  {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, "Box Gradient");
+            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);
+        
+        SkRect  r;
+        SkScalar x,y;
+        x = 10;
+        y = 10;
+
+        r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
+        for (int i = 0; i < 256; ++i) {
+            canvas->translate(1, 1);
+            paint.setColor(0xFF000000 + i * 0x00010000);
+            canvas->drawRect(r, paint);
+        }
+    }
+	
+private:
+    typedef SampleView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new SimpleView; }
+static SkViewRegister reg(MyFactory);

samplecode/SampleSpiral.cpp

@@ -0,0 +1,56 @@
+#include "SampleCode.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+
+class SpiralView : public SampleView {
+public:
+	SpiralView() {
+        this->setBGColor(0xFFDDDDDD);
+	}
+	
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt)  {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, "Spiral");
+            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);
+        
+        SkRect r;
+        SkScalar l,t,x,y;
+        l = SampleCode::GetAnimScalar(SkIntToScalar(10),
+                                      SkIntToScalar(400));
+        t = SampleCode::GetAnimScalar(SkIntToScalar(5),
+                                      SkIntToScalar(200));
+        
+        canvas->translate(320,240);
+        for (int i = 0; i < 35; i++) {
+            paint.setColor(0xFFF00FF0 - i * 0x04000000);
+            SkScalar step = SK_ScalarPI / (55 - i);
+            SkScalar angle = t * step;
+            x = (20 + SkIntToScalar(i) * 5) * SkScalarSinCos(angle, &y);
+            y *= (20 + SkIntToScalar(i) * 5);
+            r.set(x, y, x + SkIntToScalar(10), y + SkIntToScalar(10));
+            canvas->drawRect(r, paint);
+        }
+
+        this->inval(NULL);
+    }
+	
+private:
+    typedef SampleView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new SpiralView; }
+static SkViewRegister reg(MyFactory);