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- /*
- * 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/gm.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPath.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/pathops/SkPathOps.h"
- #include "tools/ToolUtils.h"
- namespace skiagm {
- class PathOpsInverseGM : public GM {
- public:
- PathOpsInverseGM() {
- }
- protected:
- void onOnceBeforeDraw() override {
- const unsigned oneColor = ToolUtils::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], ToolUtils::color_to_565(0xFFc0FFc0));
- makePaint(&fOpPaint[kReverseDifference_SkPathOp], twoColor);
- makePaint(&fOpPaint[kXOR_SkPathOp], ToolUtils::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; )
- }
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