/* * Copyright 2011 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/SkBlurTypes.h" #include "include/core/SkCanvas.h" #include "include/core/SkColor.h" #include "include/core/SkColorFilter.h" #include "include/core/SkFont.h" #include "include/core/SkMaskFilter.h" #include "include/core/SkPaint.h" #include "include/core/SkPathBuilder.h" #include "include/core/SkRect.h" #include "include/core/SkRefCnt.h" #include "include/core/SkScalar.h" #include "include/core/SkTypeface.h" #include "include/core/SkTypes.h" #include "include/effects/SkImageFilters.h" #include "src/core/SkBlurMask.h" #include "tools/DecodeUtils.h" #include "tools/Resources.h" #include "tools/ToolUtils.h" #include "tools/fonts/FontToolUtils.h" DEF_SIMPLE_GM_BG(blurs, canvas, 700, 500, 0xFFDDDDDD) { SkBlurStyle NONE = SkBlurStyle(-999); const struct { SkBlurStyle fStyle; int fCx, fCy; } gRecs[] = { { NONE, 0, 0 }, { kInner_SkBlurStyle, -1, 0 }, { kNormal_SkBlurStyle, 0, 1 }, { kSolid_SkBlurStyle, 0, -1 }, { kOuter_SkBlurStyle, 1, 0 }, }; SkPaint paint; paint.setAntiAlias(true); paint.setColor(SK_ColorBLUE); canvas->translate(SkIntToScalar(-40), SkIntToScalar(0)); for (size_t i = 0; i < std::size(gRecs); i++) { if (gRecs[i].fStyle != NONE) { paint.setMaskFilter(SkMaskFilter::MakeBlur(gRecs[i].fStyle, SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(20)))); } else { paint.setMaskFilter(nullptr); } canvas->drawCircle(SkIntToScalar(200 + gRecs[i].fCx*100), SkIntToScalar(200 + gRecs[i].fCy*100), SkIntToScalar(50), paint); } // draw text { SkFont font(ToolUtils::DefaultPortableTypeface(), 25); paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(4)))); SkScalar x = SkIntToScalar(70); SkScalar y = SkIntToScalar(400); paint.setColor(SK_ColorBLACK); canvas->drawString("Hamburgefons Style", x, y, font, paint); canvas->drawString("Hamburgefons Style", x, y + SkIntToScalar(50), font, paint); paint.setMaskFilter(nullptr); paint.setColor(SK_ColorWHITE); x -= SkIntToScalar(2); y -= SkIntToScalar(2); canvas->drawString("Hamburgefons Style", x, y, font, paint); } } ////////////////////////////////////////////////////////////////////////////////////////////// // exercise a special-case of blurs, which is two nested rects. These are drawn specially, // and possibly cached. // // in particular, we want to notice that the 2nd rect draws slightly differently, since it // is translated a fractional amount. // DEF_SIMPLE_GM(blur2rects, canvas, 700, 500) { SkPaint paint; paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 2.3f)); SkRect outer = SkRect::MakeXYWH(10.125f, 10.125f, 100.125f, 100); SkRect inner = SkRect::MakeXYWH(20.25f, 20.125f, 80, 80); SkPath path = SkPathBuilder().addRect(outer, SkPathDirection::kCW) .addRect(inner, SkPathDirection::kCCW) .detach(); canvas->drawPath(path, paint); // important to translate by a factional amount to exercise a different "phase" // of the same path w.r.t. the pixel grid SkScalar dx = SkScalarRoundToScalar(path.getBounds().width()) + 14 + 0.25f; canvas->translate(dx, 0); canvas->drawPath(path, paint); } DEF_SIMPLE_GM(blur2rectsnonninepatch, canvas, 700, 500) { SkPaint paint; paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 4.3f)); SkRect outer = SkRect::MakeXYWH(10, 110, 100, 100); SkRect inner = SkRect::MakeXYWH(50, 150, 10, 10); SkPath path = SkPathBuilder().addRect(outer, SkPathDirection::kCW) .addRect(inner, SkPathDirection::kCW) .detach(); canvas->drawPath(path, paint); SkScalar dx = SkScalarRoundToScalar(path.getBounds().width()) + 40 + 0.25f; canvas->translate(dx, 0); canvas->drawPath(path, paint); // Translate to outside of clip bounds. canvas->translate(-dx, 0); canvas->translate(-30, -150); canvas->drawPath(path, paint); } DEF_SIMPLE_GM(BlurDrawImage, canvas, 256, 256) { SkPaint paint; paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 10)); canvas->clear(0xFF88FF88); if (auto image = ToolUtils::GetResourceAsImage("images/mandrill_512_q075.jpg")) { canvas->scale(0.25, 0.25); canvas->drawImage(image, 256, 256, SkSamplingOptions(), &paint); } } DEF_SIMPLE_GM(BlurBigSigma, canvas, 1024, 1024) { SkPaint layerPaint, p; p.setImageFilter(SkImageFilters::Blur(500, 500, nullptr)); canvas->drawRect(SkRect::MakeWH(700, 800), p); } DEF_SIMPLE_GM(BlurSmallSigma, canvas, 512, 256) { { // Normal sigma on x-axis, a small but non-zero sigma on y-axis that should // be treated as identity. SkPaint paint; paint.setImageFilter(SkImageFilters::Blur(16.f, 1e-5f, nullptr)); canvas->drawRect(SkRect::MakeLTRB(64, 64, 192, 192), paint); } { // Small sigma on both axes, should be treated as identity and no red should show SkPaint paint; paint.setColor(SK_ColorRED); SkRect rect = SkRect::MakeLTRB(320, 64, 448, 192); canvas->drawRect(rect, paint); paint.setColor(SK_ColorBLACK); paint.setImageFilter(SkImageFilters::Blur(1e-5f, 1e-5f, nullptr)); canvas->drawRect(rect, paint); } } // Modeled after crbug.com/1500021, incorporates manual tiling to emulate Chrome's raster tiles // or the tiled rendering mode in Viewer. DEF_SIMPLE_GM(TiledBlurBigSigma, canvas, 1024, 768) { static constexpr int kTileWidth = 342; static constexpr int kTileHeight = 256; SkM44 origCTM = canvas->getLocalToDevice(); for (int y = 0; y < 3; ++y) { for (int x = 0; x < 3; ++x) { // Define tiled grid in the canvas pixel space canvas->save(); canvas->resetMatrix(); canvas->clipIRect(SkIRect::MakeXYWH(x*kTileWidth, y*kTileHeight, kTileWidth, kTileHeight)); canvas->setMatrix(origCTM); auto flood = SkImageFilters::ColorFilter(SkColorFilters::Blend( SK_ColorBLACK, SkBlendMode::kSrc), nullptr); auto blend = SkImageFilters::Blend(SkBlendMode::kSrcOver, std::move(flood), nullptr); auto blur = SkImageFilters::Blur(206.f, 206.f, std::move(blend)); SkPaint p; p.setImageFilter(std::move(blur)); canvas->clipRect({0, 0, 1970, 1223}); canvas->saveLayer(nullptr, &p); SkPaint fill; fill.setColor(SK_ColorBLUE); canvas->drawCircle(600, 150, 350, fill); canvas->restore(); canvas->restore(); } } }