/* * 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.h" #include "SkBlurMask.h" #include "SkBlurMaskFilter.h" #include "SkReadBuffer.h" #include "SkWriteBuffer.h" #include "SkLayerRasterizer.h" static void r0(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { p.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle, SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(3))))->unref(); rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3)); p.setMaskFilter(NULL); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(SK_Scalar1); rastBuilder->addLayer(p); p.setAlpha(0x11); p.setStyle(SkPaint::kFill_Style); p.setXfermodeMode(SkXfermode::kSrc_Mode); rastBuilder->addLayer(p); } static void r1(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { rastBuilder->addLayer(p); p.setAlpha(0x40); p.setXfermodeMode(SkXfermode::kSrc_Mode); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(SK_Scalar1*2); rastBuilder->addLayer(p); } static void r2(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { p.setStyle(SkPaint::kStrokeAndFill_Style); p.setStrokeWidth(SK_Scalar1*4); rastBuilder->addLayer(p); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(SK_Scalar1*3/2); p.setXfermodeMode(SkXfermode::kClear_Mode); rastBuilder->addLayer(p); } static void r3(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(SK_Scalar1*3); rastBuilder->addLayer(p); p.setAlpha(0x20); p.setStyle(SkPaint::kFill_Style); p.setXfermodeMode(SkXfermode::kSrc_Mode); rastBuilder->addLayer(p); } static void r4(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { p.setAlpha(0x60); rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3)); p.setAlpha(0xFF); p.setXfermodeMode(SkXfermode::kClear_Mode); rastBuilder->addLayer(p, SK_Scalar1*3/2, SK_Scalar1*3/2); p.setXfermode(NULL); rastBuilder->addLayer(p); } #include "SkDiscretePathEffect.h" static void r5(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { rastBuilder->addLayer(p); p.setPathEffect(SkDiscretePathEffect::Create(SK_Scalar1*4, SK_Scalar1*3))->unref(); p.setXfermodeMode(SkXfermode::kSrcOut_Mode); rastBuilder->addLayer(p); } static void r6(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { rastBuilder->addLayer(p); p.setAntiAlias(false); SkLayerRasterizer::Builder rastBuilder2; r5(&rastBuilder2, p); p.setRasterizer(rastBuilder2.detachRasterizer())->unref(); p.setXfermodeMode(SkXfermode::kClear_Mode); rastBuilder->addLayer(p); } #include "Sk2DPathEffect.h" static SkPathEffect* MakeDotEffect(SkScalar radius, const SkMatrix& matrix) { SkPath path; path.addCircle(0, 0, radius); return SkPath2DPathEffect::Create(matrix, path); } static void r7(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { SkMatrix lattice; lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0); lattice.postSkew(SK_Scalar1/3, 0, 0, 0); p.setPathEffect(MakeDotEffect(SK_Scalar1*4, lattice))->unref(); rastBuilder->addLayer(p); } static void r8(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { rastBuilder->addLayer(p); SkMatrix lattice; lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0); lattice.postSkew(SK_Scalar1/3, 0, 0, 0); p.setPathEffect(MakeDotEffect(SK_Scalar1*2, lattice))->unref(); p.setXfermodeMode(SkXfermode::kClear_Mode); rastBuilder->addLayer(p); p.setPathEffect(NULL); p.setXfermode(NULL); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(SK_Scalar1); rastBuilder->addLayer(p); } static void r9(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) { rastBuilder->addLayer(p); SkMatrix lattice; lattice.setScale(SK_Scalar1, SK_Scalar1*6, 0, 0); lattice.postRotate(SkIntToScalar(30), 0, 0); p.setPathEffect(SkLine2DPathEffect::Create(SK_Scalar1*2, lattice))->unref(); p.setXfermodeMode(SkXfermode::kClear_Mode); rastBuilder->addLayer(p); p.setPathEffect(NULL); p.setXfermode(NULL); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(SK_Scalar1); rastBuilder->addLayer(p); } typedef void (*raster_proc)(SkLayerRasterizer::Builder*, SkPaint&); static const raster_proc gRastProcs[] = { r0, r1, r2, r3, r4, r5, r6, r7, r8, r9 }; #include "SkXfermode.h" static void apply_shader(SkPaint* paint, int index) { raster_proc proc = gRastProcs[index]; if (proc) { SkPaint p; SkLayerRasterizer::Builder rastBuilder; p.setAntiAlias(true); proc(&rastBuilder, p); paint->setRasterizer(rastBuilder.detachRasterizer())->unref(); } #if 0 SkScalar dir[] = { SK_Scalar1, SK_Scalar1, SK_Scalar1 }; paint->setMaskFilter(SkBlurMaskFilter::CreateEmboss(dir, SK_Scalar1/4, SkIntToScalar(4), SkIntToScalar(3)))->unref(); #endif paint->setColor(SK_ColorBLUE); } class TextEffectsGM : public skiagm::GM { public: TextEffectsGM() {} protected: virtual SkString onShortName() SK_OVERRIDE { return SkString("texteffects"); } virtual SkISize onISize() SK_OVERRIDE { return SkISize::Make(460, 680); } virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { canvas->save(); SkPaint paint; paint.setAntiAlias(true); paint.setTextSize(SkIntToScalar(56)); SkScalar x = SkIntToScalar(20); SkScalar y = paint.getTextSize(); SkString str("Hamburgefons"); for (int i = 0; i < static_cast<int>(SK_ARRAY_COUNT(gRastProcs)); i++) { apply_shader(&paint, i); // paint.setMaskFilter(NULL); // paint.setColor(SK_ColorBLACK); canvas->drawText(str.c_str(), str.size(), x, y, paint); y += paint.getFontSpacing(); } canvas->restore(); } private: typedef skiagm::GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// static skiagm::GM* MyFactory(void*) { return new TextEffectsGM; } static skiagm::GMRegistry reg(MyFactory);