SamplePathEffects.cpp revision e5ff43906603dff33e14086cf1e5d73c157d2e8e
18a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SampleCode.h" 28a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkView.h" 38a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkCanvas.h" 48a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkGradientShader.h" 58a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPath.h" 68a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRegion.h" 78a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkShader.h" 88a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkUtils.h" 98a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "Sk1DPathEffect.h" 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkCornerPathEffect.h" 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPathMeasure.h" 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRandom.h" 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkColorPriv.h" 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPixelXorXfermode.h" 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#define CORNER_RADIUS 12 178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic SkScalar gPhase; 188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic const int gXY[] = { 208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4, 0, 0, -4, 8, -4, 12, 0, 8, 4, 0, 4 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 23f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.comstatic SkPathEffect* make_pe(int flags) { 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com if (flags == 1) 258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return new SkCornerPathEffect(SkIntToScalar(CORNER_RADIUS)); 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath path; 288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1])); 298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2) 308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1])); 318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.close(); 328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.offset(SkIntToScalar(-6), 0); 338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPathEffect* outer = new SkPath1DPathEffect(path, SkIntToScalar(12), gPhase, SkPath1DPathEffect::kRotate_Style); 358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com if (flags == 2) 378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return outer; 388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPathEffect* inner = new SkCornerPathEffect(SkIntToScalar(CORNER_RADIUS)); 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPathEffect* pe = new SkComposePathEffect(outer, inner); 428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com outer->unref(); 438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com inner->unref(); 448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return pe; 458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 47f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.comstatic SkPathEffect* make_warp_pe() { 488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath path; 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1])); 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2) 518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1])); 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.close(); 538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.offset(SkIntToScalar(-6), 0); 548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPathEffect* outer = new SkPath1DPathEffect(path, SkIntToScalar(12), gPhase, SkPath1DPathEffect::kMorph_Style); 568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPathEffect* inner = new SkCornerPathEffect(SkIntToScalar(CORNER_RADIUS)); 578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPathEffect* pe = new SkComposePathEffect(outer, inner); 598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com outer->unref(); 608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com inner->unref(); 618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return pe; 628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/////////////////////////////////////////////////////////// 658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkColorFilter.h" 678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkLayerRasterizer.h" 688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass testrast : public SkLayerRasterizer { 708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 71f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com testrast() { 728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPaint paint; 738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setAntiAlias(true); 748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#if 0 768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setStyle(SkPaint::kStroke_Style); 778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setStrokeWidth(SK_Scalar1*4); 788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->addLayer(paint); 798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setStrokeWidth(SK_Scalar1*1); 81048522dd2aa45d1b4bf52944527f877b30ea45fdreed@android.com paint.setXfermode(SkXfermode::kClear_Mode); 828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->addLayer(paint); 838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#else 848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setAlpha(0x66); 858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->addLayer(paint, SkIntToScalar(4), SkIntToScalar(4)); 868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setAlpha(0xFF); 888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->addLayer(paint); 898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#endif 908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 93e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.comclass PathEffectView : public SampleView { 948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath fPath; 958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPoint fClickPt; 968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 97f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com PathEffectView() { 988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkRandom rand; 998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int steps = 20; 10092a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkScalar dist = SkIntToScalar(400); 1018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar x = SkIntToScalar(20); 1028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar y = SkIntToScalar(50); 1038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fPath.moveTo(x, y); 105f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com for (int i = 0; i < steps; i++) { 1068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com x += dist/steps; 10792a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkScalar tmpY = y + SkIntToScalar(rand.nextS() % 25); 10892a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com if (i == steps/2) { 10992a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com fPath.moveTo(x, tmpY); 11092a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com } else { 11192a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com fPath.lineTo(x, tmpY); 11292a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com } 1138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 1148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11592a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com { 11692a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkRect oval; 11792a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com oval.set(SkIntToScalar(20), SkIntToScalar(30), 11892a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkIntToScalar(100), SkIntToScalar(60)); 11992a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com oval.offset(x, 0); 12092a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com fPath.addRoundRect(oval, SkIntToScalar(8), SkIntToScalar(8)); 12192a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com } 12292a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com 1238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fClickPt.set(SkIntToScalar(200), SkIntToScalar(200)); 124e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.com 125e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.com this->setBGColor(0xFFDDDDDD); 1268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 1278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprotected: 1298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // overrides from SkEventSink 130f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com virtual bool onQuery(SkEvent* evt) { 131f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com if (SampleCode::TitleQ(*evt)) { 132f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com SampleCode::TitleR(evt, "PathEffects"); 133f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com return true; 134f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com } 135f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com return this->INHERITED::onQuery(evt); 1368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 1378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 138e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.com virtual void onDrawContent(SkCanvas* canvas) { 139f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com gPhase -= SampleCode::GetAnimSecondsDelta() * 40; 140671cd656785de5e84564b6ffe4831625d7016dedreed@android.com this->inval(NULL); 1418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPaint paint; 1438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 144f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com#if 0 1458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setAntiAlias(true); 1468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setStyle(SkPaint::kStroke_Style); 1478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setStrokeWidth(SkIntToScalar(5)); 1488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 1498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setStrokeWidth(0); 1508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 15192a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com paint.setColor(SK_ColorWHITE); 1528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setPathEffect(make_pe(1))->unref(); 1538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 154f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com#endif 1558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->translate(0, SkIntToScalar(50)); 1578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setColor(SK_ColorBLUE); 1598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setPathEffect(make_pe(2))->unref(); 1608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 1618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->translate(0, SkIntToScalar(50)); 1638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setARGB(0xFF, 0, 0xBB, 0); 1658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setPathEffect(make_pe(3))->unref(); 1668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 1678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->translate(0, SkIntToScalar(50)); 1698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setARGB(0xFF, 0, 0, 0); 1718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setPathEffect(make_warp_pe())->unref(); 1728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setRasterizer(new testrast)->unref(); 1738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 1748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 1758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 177e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.com typedef SampleView INHERITED; 1788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 1798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com////////////////////////////////////////////////////////////////////////////// 1818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic SkView* MyFactory() { return new PathEffectView; } 1838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic SkViewRegister reg(MyFactory); 1848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 185