| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "sk_tool_utils.h" |
| #include "SkBitmap.h" |
| #include "SkPath.h" |
| #include "SkPathOps.h" |
| #include "SkRect.h" |
| |
| namespace skiagm { |
| |
| class PathOpsInverseGM : public GM { |
| public: |
| PathOpsInverseGM() { |
| } |
| |
| protected: |
| void onOnceBeforeDraw() override { |
| const unsigned oneColor = sk_tool_utils::color_to_565(0xFF8080FF); |
| const unsigned twoColor = 0x807F1f1f; |
| SkColor blendColor = blend(oneColor, twoColor); |
| makePaint(&fOnePaint, oneColor); |
| makePaint(&fTwoPaint, twoColor); |
| makePaint(&fOpPaint[kDifference_SkPathOp], oneColor); |
| makePaint(&fOpPaint[kIntersect_SkPathOp], blendColor); |
| makePaint(&fOpPaint[kUnion_SkPathOp], sk_tool_utils::color_to_565(0xFFc0FFc0)); |
| makePaint(&fOpPaint[kReverseDifference_SkPathOp], twoColor); |
| makePaint(&fOpPaint[kXOR_SkPathOp], sk_tool_utils::color_to_565(0xFFa0FFe0)); |
| makePaint(&fOutlinePaint, 0xFF000000); |
| fOutlinePaint.setStyle(SkPaint::kStroke_Style); |
| } |
| |
| SkColor blend(SkColor one, SkColor two) { |
| SkBitmap temp; |
| temp.allocN32Pixels(1, 1); |
| SkCanvas canvas(temp); |
| canvas.drawColor(one); |
| canvas.drawColor(two); |
| void* pixels = temp.getPixels(); |
| return *(SkColor*) pixels; |
| } |
| |
| void makePaint(SkPaint* paint, SkColor color) { |
| paint->setAntiAlias(true); |
| paint->setStyle(SkPaint::kFill_Style); |
| paint->setColor(color); |
| } |
| |
| SkString onShortName() override { |
| return SkString("pathopsinverse"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(1200, 900); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkPath one, two; |
| int yPos = 0; |
| for (int oneFill = 0; oneFill <= 1; ++oneFill) { |
| SkPath::FillType oneF = oneFill ? SkPath::kInverseEvenOdd_FillType |
| : SkPath::kEvenOdd_FillType; |
| for (int twoFill = 0; twoFill <= 1; ++twoFill) { |
| SkPath::FillType twoF = twoFill ? SkPath::kInverseEvenOdd_FillType |
| : SkPath::kEvenOdd_FillType; |
| one.reset(); |
| one.setFillType(oneF); |
| one.addRect(10, 10, 70, 70); |
| two.reset(); |
| two.setFillType(twoF); |
| two.addRect(40, 40, 100, 100); |
| canvas->save(); |
| canvas->translate(0, SkIntToScalar(yPos)); |
| canvas->clipRect(SkRect::MakeWH(110, 110), true); |
| canvas->drawPath(one, fOnePaint); |
| canvas->drawPath(one, fOutlinePaint); |
| canvas->drawPath(two, fTwoPaint); |
| canvas->drawPath(two, fOutlinePaint); |
| canvas->restore(); |
| int xPos = 150; |
| for (int op = kDifference_SkPathOp; op <= kReverseDifference_SkPathOp; ++op) { |
| SkPath result; |
| Op(one, two, (SkPathOp) op, &result); |
| canvas->save(); |
| canvas->translate(SkIntToScalar(xPos), SkIntToScalar(yPos)); |
| canvas->clipRect(SkRect::MakeWH(110, 110), true); |
| canvas->drawPath(result, fOpPaint[op]); |
| canvas->drawPath(result, fOutlinePaint); |
| canvas->restore(); |
| xPos += 150; |
| } |
| yPos += 150; |
| } |
| } |
| } |
| |
| private: |
| SkPaint fOnePaint; |
| SkPaint fTwoPaint; |
| SkPaint fOutlinePaint; |
| SkPaint fOpPaint[kReverseDifference_SkPathOp - kDifference_SkPathOp + 1]; |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return new PathOpsInverseGM; ) |
| |
| } |