reed@android.com | da6fb32 | 2010-02-19 21:41:30 +0000 | [diff] [blame^] | 1 | #include "SampleCode.h" |
| 2 | #include "SkCanvas.h" |
| 3 | #include "SkPaint.h" |
| 4 | #include "SkView.h" |
| 5 | #include "SkLayer.h" |
| 6 | |
| 7 | /////////////////////////////////////////////////////////////////////////////// |
| 8 | |
| 9 | class TestLayer : public SkLayer { |
| 10 | public: |
| 11 | TestLayer(SkColor c) : fColor(c) {} |
| 12 | |
| 13 | protected: |
| 14 | virtual void onDraw(SkCanvas* canvas, SkScalar opacity) { |
| 15 | SkRect r; |
| 16 | r.set(0, 0, this->getWidth(), this->getHeight()); |
| 17 | |
| 18 | SkPaint paint; |
| 19 | paint.setColor(fColor); |
| 20 | paint.setAlpha(SkScalarRound(opacity * 255)); |
| 21 | |
| 22 | canvas->drawRect(r, paint); |
| 23 | } |
| 24 | |
| 25 | private: |
| 26 | SkColor fColor; |
| 27 | }; |
| 28 | |
| 29 | class SkLayerView : public SkView { |
| 30 | private: |
| 31 | SkLayer* fRootLayer; |
| 32 | |
| 33 | public: |
| 34 | SkLayerView() { |
| 35 | static const int W = 640; |
| 36 | static const int H = 480; |
| 37 | static const struct { |
| 38 | int fWidth; |
| 39 | int fHeight; |
| 40 | SkColor fColor; |
| 41 | int fPosX; |
| 42 | int fPosY; |
| 43 | } gData[] = { |
| 44 | { 120, 80, SK_ColorRED, 0, 0 }, |
| 45 | { 120, 80, SK_ColorGREEN, W - 120, 0 }, |
| 46 | { 120, 80, SK_ColorBLUE, 0, H - 80 }, |
| 47 | { 120, 80, SK_ColorMAGENTA, W - 120, H - 80 }, |
| 48 | }; |
| 49 | |
| 50 | fRootLayer = new SkLayer; |
| 51 | fRootLayer->setSize(W, H); |
| 52 | for (size_t i = 0; i < SK_ARRAY_COUNT(gData); i++) { |
| 53 | SkLayer* child = new TestLayer(gData[i].fColor); |
| 54 | child->setSize(gData[i].fWidth, gData[i].fHeight); |
| 55 | child->setPosition(gData[i].fPosX, gData[i].fPosY); |
| 56 | fRootLayer->addChild(child)->unref(); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | virtual ~SkLayerView() { |
| 61 | SkSafeUnref(fRootLayer); |
| 62 | } |
| 63 | |
| 64 | protected: |
| 65 | // overrides from SkEventSink |
| 66 | virtual bool onQuery(SkEvent* evt) { |
| 67 | if (SampleCode::TitleQ(*evt)) { |
| 68 | SampleCode::TitleR(evt, "SkLayer"); |
| 69 | return true; |
| 70 | } |
| 71 | return this->INHERITED::onQuery(evt); |
| 72 | } |
| 73 | |
| 74 | void drawBG(SkCanvas* canvas) { |
| 75 | canvas->drawColor(0xFFDDDDDD); |
| 76 | |
| 77 | fRootLayer->draw(canvas); |
| 78 | } |
| 79 | |
| 80 | virtual void onDraw(SkCanvas* canvas) { |
| 81 | this->drawBG(canvas); |
| 82 | } |
| 83 | |
| 84 | private: |
| 85 | typedef SkView INHERITED; |
| 86 | }; |
| 87 | |
| 88 | /////////////////////////////////////////////////////////////////////////////// |
| 89 | |
| 90 | static SkView* MyFactory() { return new SkLayerView; } |
| 91 | static SkViewRegister reg(MyFactory); |
| 92 | |