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- /*
- * Copyright 2016 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/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPath.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkSurface.h"
- namespace skiagm {
- constexpr SkRect kSrcImageClip{75, 75, 275, 275};
- /*
- * The purpose of this test is to exercise all three codepaths in GrRenderTargetContext
- * (drawFilledRect, fillRectToRect, fillRectWithLocalMatrix) that pre-crop filled rects based on the
- * clip.
- *
- * The test creates an image of a green square surrounded by red background, then draws this image
- * in various ways with the red clipped out. The test is successful if there is no visible red
- * background, scissor is never used, and ideally, all the rectangles draw in one GrDrawOp.
- */
- class CroppedRectsGM : public GM {
- private:
- SkString onShortName() override final { return SkString("croppedrects"); }
- SkISize onISize() override { return SkISize::Make(500, 500); }
- void onOnceBeforeDraw() override {
- sk_sp<SkSurface> srcSurface = SkSurface::MakeRasterN32Premul(500, 500);
- SkCanvas* srcCanvas = srcSurface->getCanvas();
- srcCanvas->clear(SK_ColorRED);
- SkPaint paint;
- paint.setColor(0xff00ff00);
- srcCanvas->drawRect(kSrcImageClip, paint);
- constexpr SkScalar kStrokeWidth = 10;
- SkPaint stroke;
- stroke.setStyle(SkPaint::kStroke_Style);
- stroke.setStrokeWidth(kStrokeWidth);
- stroke.setColor(0xff008800);
- srcCanvas->drawRect(kSrcImageClip.makeInset(kStrokeWidth / 2, kStrokeWidth / 2), stroke);
- fSrcImage = srcSurface->makeImageSnapshot();
- fSrcImageShader = fSrcImage->makeShader();
- }
- void onDraw(SkCanvas* canvas) override {
- canvas->clear(SK_ColorWHITE);
- {
- // GrRenderTargetContext::drawFilledRect.
- SkAutoCanvasRestore acr(canvas, true);
- SkPaint paint;
- paint.setShader(fSrcImageShader);
- paint.setFilterQuality(kNone_SkFilterQuality);
- canvas->clipRect(kSrcImageClip);
- canvas->drawPaint(paint);
- }
- {
- // GrRenderTargetContext::fillRectToRect.
- SkAutoCanvasRestore acr(canvas, true);
- SkPaint paint;
- paint.setFilterQuality(kNone_SkFilterQuality);
- SkRect drawRect = SkRect::MakeXYWH(350, 100, 100, 300);
- canvas->clipRect(drawRect);
- canvas->drawImageRect(fSrcImage.get(),
- kSrcImageClip.makeOutset(0.5f * kSrcImageClip.width(),
- kSrcImageClip.height()),
- drawRect.makeOutset(0.5f * drawRect.width(), drawRect.height()),
- &paint);
- }
- {
- // GrRenderTargetContext::fillRectWithLocalMatrix.
- SkAutoCanvasRestore acr(canvas, true);
- SkPath path;
- path.moveTo(kSrcImageClip.fLeft - kSrcImageClip.width(), kSrcImageClip.centerY());
- path.lineTo(kSrcImageClip.fRight + 3 * kSrcImageClip.width(), kSrcImageClip.centerY());
- SkPaint paint;
- paint.setStyle(SkPaint::kStroke_Style);
- paint.setStrokeWidth(2 * kSrcImageClip.height());
- paint.setShader(fSrcImageShader);
- paint.setFilterQuality(kNone_SkFilterQuality);
- canvas->translate(23, 301);
- canvas->scale(300 / kSrcImageClip.width(), 100 / kSrcImageClip.height());
- canvas->translate(-kSrcImageClip.left(), -kSrcImageClip.top());
- canvas->clipRect(kSrcImageClip);
- canvas->drawPath(path, paint);
- }
- // TODO: assert the draw target only has one op in the post-MDB world.
- }
- sk_sp<SkImage> fSrcImage;
- sk_sp<SkShader> fSrcImageShader;
- typedef GM INHERITED;
- };
- DEF_GM( return new CroppedRectsGM(); )
- }
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