85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
// Copyright 2020 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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REG_FIDDLE(pathops, 1000, 600, false, 0) {
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void makePaint(SkPaint * paint, SkColor color) {
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paint->setAntiAlias(true);
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paint->setStyle(SkPaint::kFill_Style);
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paint->setColor(color);
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}
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SkColor blend(SkColor one, SkColor two) {
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SkBitmap temp;
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temp.allocN32Pixels(1, 1);
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SkCanvas canvas(temp);
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canvas.drawColor(one);
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canvas.drawColor(two);
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void* pixels = temp.getPixels();
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return *(SkColor*)pixels;
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}
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void draw(SkCanvas* canvas) {
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SkPaint fOnePaint;
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SkPaint fTwoPaint;
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SkPaint fOutlinePaint;
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SkPaint fOpPaint[kReverseDifference_SkPathOp - kDifference_SkPathOp + 1];
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const unsigned oneColor = 0xFF8080FF;
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const unsigned twoColor = 0x807F1f1f;
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SkColor blendColor = blend(oneColor, twoColor);
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makePaint(&fOnePaint, oneColor);
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makePaint(&fTwoPaint, twoColor);
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makePaint(&fOpPaint[kDifference_SkPathOp], oneColor);
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makePaint(&fOpPaint[kIntersect_SkPathOp], blendColor);
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makePaint(&fOpPaint[kUnion_SkPathOp], 0xFFc0FFc0);
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makePaint(&fOpPaint[kReverseDifference_SkPathOp], twoColor);
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makePaint(&fOpPaint[kXOR_SkPathOp], 0xFFa0FFe0);
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makePaint(&fOutlinePaint, 0xFF000000);
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fOutlinePaint.setStyle(SkPaint::kStroke_Style);
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SkPath one, two;
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int yPos = 0;
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for (int oneFill = 0; oneFill <= 1; ++oneFill) {
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SkPathFillType oneF =
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oneFill ? SkPathFillType::kInverseEvenOdd : SkPathFillType::kEvenOdd;
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for (int twoFill = 0; twoFill <= 1; ++twoFill) {
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SkPathFillType twoF =
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twoFill ? SkPathFillType::kInverseEvenOdd : SkPathFillType::kEvenOdd;
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one.reset();
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one.setFillType(oneF);
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one.moveTo(10, 10);
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one.conicTo(0, 90, 50, 50, 3);
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one.conicTo(90, 0, 90, 90, 2);
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one.close();
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two.reset();
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two.setFillType(twoF);
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two.addRect(40, 40, 100, 100);
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canvas->save();
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canvas->translate(0, SkIntToScalar(yPos));
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canvas->clipRect(SkRect::MakeWH(110, 110), SkClipOp::kIntersect, true);
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canvas->drawPath(one, fOnePaint);
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canvas->drawPath(one, fOutlinePaint);
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canvas->drawPath(two, fTwoPaint);
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canvas->drawPath(two, fOutlinePaint);
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canvas->restore();
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int xPos = 150;
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for (int op = kDifference_SkPathOp; op <= kReverseDifference_SkPathOp; ++op) {
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SkPath result;
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Op(one, two, (SkPathOp)op, &result);
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canvas->save();
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canvas->translate(SkIntToScalar(xPos), SkIntToScalar(yPos));
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canvas->clipRect(SkRect::MakeWH(110, 110), SkClipOp::kIntersect, true);
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canvas->drawPath(result, fOpPaint[op]);
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canvas->drawPath(result, fOutlinePaint);
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canvas->restore();
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xPos += 150;
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}
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yPos += 150;
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}
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}
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}
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} // END FIDDLE
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