d6c38137e2
git-svn-id: http://skia.googlecode.com/svn/trunk@5053 2bbb7eff-a529-9590-31e7-b0007b416f81
279 lines
7.7 KiB
C++
279 lines
7.7 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkFlattenableBuffers.h"
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#include "SkLayerRasterizer.h"
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#include "SkBlurMaskFilter.h"
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static void r0(SkLayerRasterizer* rast, SkPaint& p) {
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p.setMaskFilter(SkBlurMaskFilter::Create(SkIntToScalar(3),
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SkBlurMaskFilter::kNormal_BlurStyle))->unref();
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rast->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setMaskFilter(NULL);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rast->addLayer(p);
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p.setAlpha(0x11);
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p.setStyle(SkPaint::kFill_Style);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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rast->addLayer(p);
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}
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static void r1(SkLayerRasterizer* rast, SkPaint& p) {
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rast->addLayer(p);
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p.setAlpha(0x40);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*2);
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rast->addLayer(p);
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}
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static void r2(SkLayerRasterizer* rast, SkPaint& p) {
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p.setStyle(SkPaint::kStrokeAndFill_Style);
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p.setStrokeWidth(SK_Scalar1*4);
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rast->addLayer(p);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*3/2);
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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}
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static void r3(SkLayerRasterizer* rast, SkPaint& p) {
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*3);
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rast->addLayer(p);
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p.setAlpha(0x20);
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p.setStyle(SkPaint::kFill_Style);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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rast->addLayer(p);
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}
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static void r4(SkLayerRasterizer* rast, SkPaint& p) {
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p.setAlpha(0x60);
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rast->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setAlpha(0xFF);
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p, SK_Scalar1*3/2, SK_Scalar1*3/2);
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p.setXfermode(NULL);
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rast->addLayer(p);
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}
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#include "SkDiscretePathEffect.h"
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static void r5(SkLayerRasterizer* rast, SkPaint& p) {
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rast->addLayer(p);
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p.setPathEffect(new SkDiscretePathEffect(SK_Scalar1*4, SK_Scalar1*3))->unref();
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p.setXfermodeMode(SkXfermode::kSrcOut_Mode);
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rast->addLayer(p);
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}
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static void r6(SkLayerRasterizer* rast, SkPaint& p) {
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rast->addLayer(p);
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p.setAntiAlias(false);
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SkLayerRasterizer* rast2 = new SkLayerRasterizer;
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r5(rast2, p);
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p.setRasterizer(rast2)->unref();
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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}
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#include "Sk2DPathEffect.h"
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static SkPathEffect* MakeDotEffect(SkScalar radius, const SkMatrix& matrix) {
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SkPath path;
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path.addCircle(0, 0, radius);
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return new SkPath2DPathEffect(matrix, path);
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}
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static void r7(SkLayerRasterizer* rast, SkPaint& p) {
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
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lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
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p.setPathEffect(MakeDotEffect(SK_Scalar1*4, lattice))->unref();
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rast->addLayer(p);
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}
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static void r8(SkLayerRasterizer* rast, SkPaint& p) {
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rast->addLayer(p);
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
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lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
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p.setPathEffect(MakeDotEffect(SK_Scalar1*2, lattice))->unref();
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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p.setPathEffect(NULL);
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p.setXfermode(NULL);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rast->addLayer(p);
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}
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class Line2DPathEffect : public Sk2DPathEffect {
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public:
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Line2DPathEffect(SkScalar width, const SkMatrix& matrix)
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: Sk2DPathEffect(matrix), fWidth(width) {}
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virtual bool filterPath(SkPath* dst, const SkPath& src, SkStrokeRec* rec) SK_OVERRIDE {
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if (this->INHERITED::filterPath(dst, src, rec)) {
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rec->setStrokeStyle(fWidth);
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return true;
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}
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return false;
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}
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Line2DPathEffect)
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protected:
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virtual void nextSpan(int u, int v, int ucount, SkPath* dst) {
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if (ucount > 1) {
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SkPoint src[2], dstP[2];
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src[0].set(SkIntToScalar(u) + SK_ScalarHalf,
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SkIntToScalar(v) + SK_ScalarHalf);
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src[1].set(SkIntToScalar(u+ucount) + SK_ScalarHalf,
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SkIntToScalar(v) + SK_ScalarHalf);
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this->getMatrix().mapPoints(dstP, src, 2);
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dst->moveTo(dstP[0]);
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dst->lineTo(dstP[1]);
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}
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}
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Line2DPathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
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fWidth = buffer.readScalar();
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}
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virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE {
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this->INHERITED::flatten(buffer);
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buffer.writeScalar(fWidth);
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}
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private:
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SkScalar fWidth;
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typedef Sk2DPathEffect INHERITED;
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};
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static void r9(SkLayerRasterizer* rast, SkPaint& p) {
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rast->addLayer(p);
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1, SK_Scalar1*6, 0, 0);
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lattice.postRotate(SkIntToScalar(30), 0, 0);
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p.setPathEffect(new Line2DPathEffect(SK_Scalar1*2, lattice))->unref();
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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p.setPathEffect(NULL);
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p.setXfermode(NULL);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rast->addLayer(p);
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}
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typedef void (*raster_proc)(SkLayerRasterizer*, SkPaint&);
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static const raster_proc gRastProcs[] = {
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r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
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};
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static const struct {
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SkColor fMul, fAdd;
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} gLightingColors[] = {
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{ 0x808080, 0x800000 }, // general case
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{ 0x707070, 0x707070 }, // no-pin case
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{ 0xFFFFFF, 0x800000 }, // just-add case
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{ 0x808080, 0x000000 }, // just-mul case
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{ 0xFFFFFF, 0x000000 } // identity case
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};
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#include "SkXfermode.h"
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static void apply_shader(SkPaint* paint, int index) {
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raster_proc proc = gRastProcs[index];
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if (proc)
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{
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SkPaint p;
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SkLayerRasterizer* rast = new SkLayerRasterizer;
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p.setAntiAlias(true);
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proc(rast, p);
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paint->setRasterizer(rast)->unref();
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}
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#if 0
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SkScalar dir[] = { SK_Scalar1, SK_Scalar1, SK_Scalar1 };
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paint->setMaskFilter(SkBlurMaskFilter::CreateEmboss(dir, SK_Scalar1/4, SkIntToScalar(4), SkIntToScalar(3)))->unref();
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#endif
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paint->setColor(SK_ColorBLUE);
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}
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class TextEffectsGM : public skiagm::GM {
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public:
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TextEffectsGM() {}
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protected:
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virtual SkString onShortName() SK_OVERRIDE {
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return SkString("texteffects");
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}
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virtual SkISize onISize() SK_OVERRIDE {
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return SkISize::Make(460, 680);
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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canvas->save();
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setTextSize(SkIntToScalar(56));
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SkScalar x = SkIntToScalar(20);
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SkScalar y = paint.getTextSize();
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SkString str("Hamburgefons");
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for (size_t i = 0; i < SK_ARRAY_COUNT(gRastProcs); i++) {
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apply_shader(&paint, i);
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// paint.setMaskFilter(NULL);
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// paint.setColor(SK_ColorBLACK);
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canvas->drawText(str.c_str(), str.size(), x, y, paint);
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y += paint.getFontSpacing();
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}
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canvas->restore();
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}
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virtual uint32_t onGetFlags() const SK_OVERRIDE {
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// want to skip serialization due to custom effects only defined here
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return kSkipPipe_Flag;
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static skiagm::GM* MyFactory(void*) { return new TextEffectsGM; }
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static skiagm::GMRegistry reg(MyFactory);
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