| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SampleCode.h" |
| #include "SkAnimTimer.h" |
| #include "SkCanvas.h" |
| #include "SkColorFilter.h" |
| #include "SkColorPriv.h" |
| #include "SkCornerPathEffect.h" |
| #include "SkDrawable.h" |
| #include "SkGradientShader.h" |
| #include "SkLayerRasterizer.h" |
| #include "SkPath.h" |
| #include "SkPathMeasure.h" |
| #include "SkPictureRecorder.h" |
| #include "SkRandom.h" |
| #include "SkRegion.h" |
| #include "SkShader.h" |
| #include "SkString.h" |
| #include "SkUtils.h" |
| #include "SkView.h" |
| #include "Sk1DPathEffect.h" |
| |
| #include "SkParsePath.h" |
| static void testparse() { |
| SkRect r; |
| r.set(0, 0, 10, 10.5f); |
| SkPath p, p2; |
| SkString str, str2; |
| |
| p.addRect(r); |
| SkParsePath::ToSVGString(p, &str); |
| SkParsePath::FromSVGString(str.c_str(), &p2); |
| SkParsePath::ToSVGString(p2, &str2); |
| } |
| |
| class ArcsView : public SampleView { |
| class MyDrawable : public SkDrawable { |
| SkRect fR; |
| SkScalar fSweep; |
| public: |
| MyDrawable(const SkRect& r) : fR(r), fSweep(0) {} |
| |
| void setSweep(SkScalar sweep) { |
| if (fSweep != sweep) { |
| fSweep = sweep; |
| this->notifyDrawingChanged(); |
| } |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStrokeWidth(SkIntToScalar(2)); |
| |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setColor(0x800000FF); |
| canvas->drawArc(fR, 0, fSweep, true, paint); |
| |
| paint.setColor(0x800FF000); |
| canvas->drawArc(fR, 0, fSweep, false, paint); |
| |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setColor(SK_ColorRED); |
| canvas->drawArc(fR, 0, fSweep, true, paint); |
| |
| paint.setStrokeWidth(0); |
| paint.setColor(SK_ColorBLUE); |
| canvas->drawArc(fR, 0, fSweep, false, paint); |
| } |
| |
| SkRect onGetBounds() override { |
| SkRect r(fR); |
| r.outset(2, 2); |
| return r; |
| } |
| }; |
| |
| public: |
| SkRect fRect; |
| sk_sp<MyDrawable> fAnimatingDrawable; |
| sk_sp<SkDrawable> fRootDrawable; |
| |
| ArcsView() { |
| testparse(); |
| fSweep = SkIntToScalar(100); |
| this->setBGColor(0xFFDDDDDD); |
| |
| fRect.set(0, 0, SkIntToScalar(200), SkIntToScalar(200)); |
| fRect.offset(SkIntToScalar(20), SkIntToScalar(20)); |
| fAnimatingDrawable = sk_make_sp<MyDrawable>(fRect); |
| |
| SkPictureRecorder recorder; |
| this->drawRoot(recorder.beginRecording(SkRect::MakeWH(800, 500))); |
| fRootDrawable = recorder.finishRecordingAsDrawable(); |
| } |
| |
| protected: |
| // overrides from SkEventSink |
| bool onQuery(SkEvent* evt) override { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "Arcs"); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| static void DrawRectWithLines(SkCanvas* canvas, const SkRect& r, const SkPaint& p) { |
| canvas->drawRect(r, p); |
| canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, p); |
| canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, p); |
| canvas->drawLine(r.fLeft, r.centerY(), r.fRight, r.centerY(), p); |
| canvas->drawLine(r.centerX(), r.fTop, r.centerX(), r.fBottom, p); |
| } |
| |
| static void DrawLabel(SkCanvas* canvas, const SkRect& rect, SkScalar start, SkScalar sweep) { |
| SkPaint paint; |
| |
| paint.setAntiAlias(true); |
| paint.setTextAlign(SkPaint::kCenter_Align); |
| |
| SkString str; |
| |
| str.appendScalar(start); |
| str.append(", "); |
| str.appendScalar(sweep); |
| canvas->drawString(str, rect.centerX(), |
| rect.fBottom + paint.getTextSize() * 5/4, paint); |
| } |
| |
| static void DrawArcs(SkCanvas* canvas) { |
| SkPaint paint; |
| SkRect r; |
| SkScalar w = 75; |
| SkScalar h = 50; |
| |
| r.set(0, 0, w, h); |
| paint.setAntiAlias(true); |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| canvas->save(); |
| canvas->translate(SkIntToScalar(10), SkIntToScalar(300)); |
| |
| paint.setStrokeWidth(SkIntToScalar(1)); |
| |
| static const SkScalar gAngles[] = { |
| 0, 360, |
| 0, 45, |
| 0, -45, |
| 720, 135, |
| -90, 269, |
| -90, 270, |
| -90, 271, |
| -180, -270, |
| 225, 90 |
| }; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gAngles); i += 2) { |
| paint.setColor(SK_ColorBLACK); |
| DrawRectWithLines(canvas, r, paint); |
| |
| paint.setColor(SK_ColorRED); |
| canvas->drawArc(r, gAngles[i], gAngles[i+1], false, paint); |
| |
| DrawLabel(canvas, r, gAngles[i], gAngles[i+1]); |
| |
| canvas->translate(w * 8 / 7, 0); |
| } |
| |
| canvas->restore(); |
| } |
| |
| void drawRoot(SkCanvas* canvas) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStrokeWidth(SkIntToScalar(2)); |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| DrawRectWithLines(canvas, fRect, paint); |
| |
| canvas->drawDrawable(fAnimatingDrawable.get()); |
| |
| DrawArcs(canvas); |
| } |
| |
| void onDrawContent(SkCanvas* canvas) override { |
| canvas->drawDrawable(fRootDrawable.get()); |
| } |
| |
| bool onAnimate(const SkAnimTimer& timer) override { |
| SkScalar angle = SkDoubleToScalar(fmod(timer.secs() * 360 / 24, 360)); |
| fAnimatingDrawable->setSweep(angle); |
| return true; |
| } |
| |
| private: |
| SkScalar fSweep; |
| |
| typedef SampleView INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static SkView* MyFactory() { return new ArcsView; } |
| static SkViewRegister reg(MyFactory); |