1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2011 Google Inc. 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 776113a9b7716748c70ea0ecf7aacbabe4cce5009reed 88a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SampleCode.h" 976113a9b7716748c70ea0ecf7aacbabe4cce5009reed#include "SkAnimTimer.h" 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkView.h" 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkCanvas.h" 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkGradientShader.h" 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPath.h" 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRegion.h" 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkShader.h" 168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkUtils.h" 178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "Sk1DPathEffect.h" 188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkCornerPathEffect.h" 198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPathMeasure.h" 208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRandom.h" 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkColorPriv.h" 228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#define CORNER_RADIUS 12 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic const int gXY[] = { 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4, 0, 0, -4, 8, -4, 12, 0, 8, 4, 0, 4 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 29a439334b6e758d38501e225e2e5d0ab73e2fb6ebreedstatic sk_sp<SkPathEffect> make_pe(int flags, SkScalar phase) { 30a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed if (flags == 1) { 31a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed return SkCornerPathEffect::Make(SkIntToScalar(CORNER_RADIUS)); 32a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed } 338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath path; 358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1])); 368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2) 378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1])); 388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.close(); 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.offset(SkIntToScalar(-6), 0); 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 41a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed auto outer = SkPath1DPathEffect::Make(path, 12, phase, SkPath1DPathEffect::kRotate_Style); 42ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com if (flags == 2) 448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return outer; 458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 46a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed auto inner = SkCornerPathEffect::Make(SkIntToScalar(CORNER_RADIUS)); 478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 48a07741a75aa694c0e7c00c2301c9de2daf9b5f9eMike Reed return SkPathEffect::MakeCompose(outer, inner); 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 51a439334b6e758d38501e225e2e5d0ab73e2fb6ebreedstatic sk_sp<SkPathEffect> make_warp_pe(SkScalar phase) { 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath path; 538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1])); 54a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2) { 558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1])); 56a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed } 578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.close(); 588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path.offset(SkIntToScalar(-6), 0); 598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 60a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed auto outer = SkPath1DPathEffect::Make( 61d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed path, 12, phase, SkPath1DPathEffect::kMorph_Style); 62a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed auto inner = SkCornerPathEffect::Make(SkIntToScalar(CORNER_RADIUS)); 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 64a07741a75aa694c0e7c00c2301c9de2daf9b5f9eMike Reed return SkPathEffect::MakeCompose(outer, inner); 658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/////////////////////////////////////////////////////////// 688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkColorFilter.h" 708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 71e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.comclass PathEffectView : public SampleView { 728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath fPath; 738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPoint fClickPt; 74d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed SkScalar fPhase; 75d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed 768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 77d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed PathEffectView() : fPhase(0) { 7863c684a8a609d39da11b4a656223cebf52ca85dccaryclark } 7963c684a8a609d39da11b4a656223cebf52ca85dccaryclark 8063c684a8a609d39da11b4a656223cebf52ca85dccaryclarkprotected: 8136352bf5e38f45a70ee4f4fc132a38048d38206dmtklein void onOnceBeforeDraw() override { 82e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.org SkRandom rand; 838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int steps = 20; 8492a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkScalar dist = SkIntToScalar(400); 858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar x = SkIntToScalar(20); 868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar y = SkIntToScalar(50); 87ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fPath.moveTo(x, y); 89f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com for (int i = 0; i < steps; i++) { 908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com x += dist/steps; 9192a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkScalar tmpY = y + SkIntToScalar(rand.nextS() % 25); 9292a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com if (i == steps/2) { 9392a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com fPath.moveTo(x, tmpY); 9492a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com } else { 9592a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com fPath.lineTo(x, tmpY); 9692a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com } 978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9992a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com { 10092a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkRect oval; 10192a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com oval.set(SkIntToScalar(20), SkIntToScalar(30), 10292a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com SkIntToScalar(100), SkIntToScalar(60)); 10392a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com oval.offset(x, 0); 10492a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com fPath.addRoundRect(oval, SkIntToScalar(8), SkIntToScalar(8)); 10592a50eaab977543031f12a1b0b1d4ce07f80ba75reed@android.com } 106ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 1078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fClickPt.set(SkIntToScalar(200), SkIntToScalar(200)); 108ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 109e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.com this->setBGColor(0xFFDDDDDD); 1108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 111ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 11236352bf5e38f45a70ee4f4fc132a38048d38206dmtklein bool onQuery(SkEvent* evt) override { 113f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com if (SampleCode::TitleQ(*evt)) { 114f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com SampleCode::TitleR(evt, "PathEffects"); 115f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com return true; 116f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com } 117f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com return this->INHERITED::onQuery(evt); 1188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 119ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 12036352bf5e38f45a70ee4f4fc132a38048d38206dmtklein void onDrawContent(SkCanvas* canvas) override { 1218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPaint paint; 122ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 123d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed canvas->translate(0, 50); 124ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 1258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setColor(SK_ColorBLUE); 126a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed paint.setPathEffect(make_pe(2, fPhase)); 1278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 128ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 129d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed canvas->translate(0, 50); 130ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 1318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setARGB(0xFF, 0, 0xBB, 0); 132a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed paint.setPathEffect(make_pe(3, fPhase)); 1338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 134ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 135d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed canvas->translate(0, 50); 1368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint.setARGB(0xFF, 0, 0, 0); 138a439334b6e758d38501e225e2e5d0ab73e2fb6ebreed paint.setPathEffect(make_warp_pe(fPhase)); 1398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas->drawPath(fPath, paint); 1408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 141ae933ce0ea5fd9d21cb6ef2cee7e729d32690aacrmistry@google.com 14236352bf5e38f45a70ee4f4fc132a38048d38206dmtklein bool onAnimate(const SkAnimTimer& timer) override { 14376113a9b7716748c70ea0ecf7aacbabe4cce5009reed fPhase = timer.scaled(40); 144d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed return true; 145d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed } 146d9adfe6a223955bc69c8c7661ab8e0a078afbc32reed 1478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 148e5ff43906603dff33e14086cf1e5d73c157d2e8ereed@google.com typedef SampleView INHERITED; 1498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 1508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com////////////////////////////////////////////////////////////////////////////// 1528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic SkView* MyFactory() { return new PathEffectView; } 1548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comstatic SkViewRegister reg(MyFactory); 155