/* * Copyright 2012 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 "SkCanvas.h" #include "SkAAClip.h" namespace skiagm { static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip, const SkPaint& paint) { SkMask mask; SkBitmap bm; clip.copyToMask(&mask); SkAutoMaskFreeImage amfi(mask.fImage); bm.installMaskPixels(mask); // need to copy for deferred drawing test to work SkBitmap bm2; bm.deepCopyTo(&bm2); canvas->drawBitmap(bm2, SK_Scalar1 * mask.fBounds.fLeft, SK_Scalar1 * mask.fBounds.fTop, &paint); } ////////////////////////////////////////////////////////////////////////////// /* * This GM tests anti aliased single operation booleans with SkAAClips, * SkRect and SkPaths. */ class SimpleClipGM : public GM { public: enum SkGeomTypes { kRect_GeomType, kPath_GeomType, kAAClip_GeomType }; SimpleClipGM(SkGeomTypes geomType) : fGeomType(geomType) { // offset the rects a bit so we get anti-aliasing in the rect case fBase.set(100.65f, 100.65f, 150.65f, 150.65f); fRect = fBase; fRect.inset(5, 5); fRect.offset(25, 25); fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5)); fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5)); INHERITED::setBGColor(0xFFDDDDDD); } protected: void buildRgn(SkAAClip* clip, SkRegion::Op op) { clip->setPath(fBasePath, NULL, true); SkAAClip clip2; clip2.setPath(fRectPath, NULL, true); clip->op(clip2, op); } void drawOrig(SkCanvas* canvas) { SkPaint paint; paint.setStyle(SkPaint::kStroke_Style); paint.setColor(SK_ColorBLACK); canvas->drawRect(fBase, paint); canvas->drawRect(fRect, paint); } void drawRgnOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) { SkAAClip clip; this->buildRgn(&clip, op); this->drawOrig(canvas); SkPaint paint; paint.setColor(color); paint_rgn(canvas, clip, paint); } void drawPathsOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) { this->drawOrig(canvas); canvas->save(); // create the clip mask with the supplied boolean op if (kPath_GeomType == fGeomType) { // path-based case canvas->clipPath(fBasePath, SkRegion::kReplace_Op, true); canvas->clipPath(fRectPath, op, true); } else { // rect-based case canvas->clipRect(fBase, SkRegion::kReplace_Op, true); canvas->clipRect(fRect, op, true); } // draw a rect that will entirely cover the clip mask area SkPaint paint; paint.setColor(color); SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90), SkIntToScalar(180), SkIntToScalar(180)); canvas->drawRect(r, paint); canvas->restore(); } virtual SkString onShortName() { SkString str; str.printf("simpleaaclip_%s", kRect_GeomType == fGeomType ? "rect" : (kPath_GeomType == fGeomType ? "path" : "aaclip")); return str; } virtual SkISize onISize() { return SkISize::Make(640, 480); } virtual void onDraw(SkCanvas* canvas) { static const struct { SkColor fColor; const char* fName; SkRegion::Op fOp; } gOps[] = { { SK_ColorBLACK, "Difference", SkRegion::kDifference_Op }, { SK_ColorRED, "Intersect", SkRegion::kIntersect_Op }, { 0xFF008800, "Union", SkRegion::kUnion_Op }, { SK_ColorGREEN, "Rev Diff", SkRegion::kReverseDifference_Op }, { SK_ColorYELLOW, "Replace", SkRegion::kReplace_Op }, { SK_ColorBLUE, "XOR", SkRegion::kXOR_Op }, }; SkPaint textPaint; textPaint.setAntiAlias(true); textPaint.setTextSize(SK_Scalar1*24); int xOff = 0; for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) { canvas->drawText(gOps[op].fName, strlen(gOps[op].fName), SkIntToScalar(75), SkIntToScalar(50), textPaint); if (kAAClip_GeomType == fGeomType) { this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor); } else { this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor); } if (xOff >= 400) { canvas->translate(SkIntToScalar(-400), SkIntToScalar(250)); xOff = 0; } else { canvas->translate(SkIntToScalar(200), 0); xOff += 200; } } } private: SkGeomTypes fGeomType; SkRect fBase; SkRect fRect; SkPath fBasePath; // fBase as a round rect SkPath fRectPath; // fRect as a round rect typedef GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// // rects DEF_GM( return new SimpleClipGM(SimpleClipGM::kRect_GeomType); ) DEF_GM( return new SimpleClipGM(SimpleClipGM::kPath_GeomType); ) DEF_GM( return new SimpleClipGM(SimpleClipGM::kAAClip_GeomType); ) }