| #include "SampleCode.h" |
| #include "SkCanvas.h" |
| #include "SkPaint.h" |
| #include "SkView.h" |
| #include "SkLayer.h" |
| |
| #include "SkMatrix44.h" |
| static void test_inv(const char label[], const SkMatrix44& mat) { |
| SkDebugf("%s\n", label); |
| mat.dump(); |
| |
| SkMatrix44 inv; |
| if (mat.invert(&inv)) { |
| inv.dump(); |
| } else { |
| SkDebugf("--- invert failed\n"); |
| } |
| |
| SkMatrix44 a, b; |
| a.setConcat(mat, inv); |
| b.setConcat(inv, mat); |
| SkDebugf("concat mat with inverse pre=%d post=%d\n", a.isIdentity(), b.isIdentity()); |
| if (!a.isIdentity()) { |
| a.dump(); |
| } |
| if (!b.isIdentity()) { |
| b.dump(); |
| } |
| SkDebugf("\n"); |
| } |
| |
| static void test44() { |
| SkMatrix44 m0, m1, m2; |
| |
| test_inv("identity", m0); |
| m0.setTranslate(2,3,4); |
| test_inv("translate", m0); |
| m0.setScale(2,3,4); |
| test_inv("scale", m0); |
| m0.postTranslate(5, 6, 7); |
| test_inv("postTranslate", m0); |
| m0.setScale(2,3,4); |
| m1.setTranslate(5, 6, 7); |
| m0.setConcat(m0, m1); |
| test_inv("postTranslate2", m0); |
| m0.setScale(2,3,4); |
| m0.preTranslate(5, 6, 7); |
| test_inv("preTranslate", m0); |
| |
| m0.setScale(2, 4, 6); |
| m0.postScale(SkDoubleToMScalar(0.5)); |
| test_inv("scale/postscale to 1,2,3", m0); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class TestLayer : public SkLayer { |
| public: |
| TestLayer(SkColor c) : fColor(c) {} |
| |
| protected: |
| virtual void onDraw(SkCanvas* canvas, SkScalar opacity) { |
| SkRect r; |
| r.set(0, 0, this->getWidth(), this->getHeight()); |
| |
| SkPaint paint; |
| paint.setColor(fColor); |
| paint.setAlpha(SkScalarRound(opacity * 255)); |
| |
| canvas->drawRect(r, paint); |
| } |
| |
| private: |
| SkColor fColor; |
| }; |
| |
| class SkLayerView : public SkView { |
| private: |
| SkLayer* fRootLayer; |
| |
| public: |
| SkLayerView() { |
| test44(); |
| static const int W = 600; |
| static const int H = 440; |
| static const struct { |
| int fWidth; |
| int fHeight; |
| SkColor fColor; |
| int fPosX; |
| int fPosY; |
| } gData[] = { |
| { 120, 80, SK_ColorRED, 0, 0 }, |
| { 120, 80, SK_ColorGREEN, W - 120, 0 }, |
| { 120, 80, SK_ColorBLUE, 0, H - 80 }, |
| { 120, 80, SK_ColorMAGENTA, W - 120, H - 80 }, |
| }; |
| |
| fRootLayer = new TestLayer(0xFFDDDDDD); |
| fRootLayer->setSize(W, H); |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gData); i++) { |
| SkLayer* child = new TestLayer(gData[i].fColor); |
| child->setSize(gData[i].fWidth, gData[i].fHeight); |
| child->setPosition(gData[i].fPosX, gData[i].fPosY); |
| fRootLayer->addChild(child)->unref(); |
| } |
| |
| SkLayer* child = new TestLayer(0xFFDD8844); |
| child->setSize(120, 80); |
| child->setPosition(fRootLayer->getWidth()/2 - child->getWidth()/2, |
| fRootLayer->getHeight()/2 - child->getHeight()/2); |
| child->setAnchorPoint(SK_ScalarHalf, SK_ScalarHalf); |
| { |
| SkMatrix m; |
| m.setRotate(SkIntToScalar(30)); |
| child->setMatrix(m); |
| } |
| fRootLayer->addChild(child)->unref(); |
| } |
| |
| virtual ~SkLayerView() { |
| SkSafeUnref(fRootLayer); |
| } |
| |
| protected: |
| // overrides from SkEventSink |
| virtual bool onQuery(SkEvent* evt) { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "SkLayer"); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void drawBG(SkCanvas* canvas) { |
| canvas->drawColor(SK_ColorWHITE); |
| |
| canvas->translate(20, 20); |
| fRootLayer->draw(canvas); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| this->drawBG(canvas); |
| } |
| |
| private: |
| typedef SkView INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static SkView* MyFactory() { return new SkLayerView; } |
| static SkViewRegister reg(MyFactory); |
| |