| /* |
| * 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 "SkCanvas.h" |
| #include "SkColorPriv.h" |
| #include "SkShader.h" |
| |
| /* |
| * Want to ensure that our bitmap sampler (in bitmap shader) keeps plenty of |
| * precision when scaling very large images (where the dx might get very small. |
| */ |
| |
| #define W 2560 |
| #define H 1600 |
| |
| class GiantBitmapGM : public skiagm::GM { |
| SkBitmap* fBM; |
| SkShader::TileMode fMode; |
| |
| const SkBitmap& getBitmap() { |
| if (NULL == fBM) { |
| fBM = new SkBitmap; |
| fBM->setConfig(SkBitmap::kARGB_8888_Config, W, H); |
| fBM->allocPixels(); |
| fBM->eraseColor(SK_ColorWHITE); |
| |
| const SkColor colors[] = { |
| SK_ColorBLUE, SK_ColorRED, SK_ColorBLACK, SK_ColorGREEN |
| }; |
| |
| SkCanvas canvas(*fBM); |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStrokeWidth(SkIntToScalar(30)); |
| for (int y = -H; y < H; y += 80) { |
| SkScalar yy = SkIntToScalar(y); |
| paint.setColor(colors[y/80 & 0x3]); |
| canvas.drawLine(0, yy, SkIntToScalar(W), yy + SkIntToScalar(W), |
| paint); |
| } |
| } |
| return *fBM; |
| } |
| |
| public: |
| GiantBitmapGM(SkShader::TileMode mode) : fBM(NULL), fMode(mode) {} |
| |
| virtual ~GiantBitmapGM() { |
| SkDELETE(fBM); |
| } |
| |
| protected: |
| // work-around for bug http://code.google.com/p/skia/issues/detail?id=520 |
| // |
| virtual uint32_t onGetFlags() const { return kSkipPDF_Flag; } |
| |
| virtual SkString onShortName() { |
| SkString str("giantbitmap_"); |
| switch (fMode) { |
| case SkShader::kClamp_TileMode: |
| str.append("clamp"); |
| break; |
| case SkShader::kRepeat_TileMode: |
| str.append("repeat"); |
| break; |
| case SkShader::kMirror_TileMode: |
| str.append("mirror"); |
| break; |
| default: |
| break; |
| } |
| return str; |
| } |
| |
| virtual SkISize onISize() { return SkISize::Make(640, 480); } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| SkPaint paint; |
| SkShader* s = SkShader::CreateBitmapShader(getBitmap(), fMode, fMode); |
| SkMatrix m; |
| m.setScale(2*SK_Scalar1/3, 2*SK_Scalar1/3); |
| s->setLocalMatrix(m); |
| paint.setShader(s)->unref(); |
| |
| canvas->drawPaint(paint); |
| } |
| |
| private: |
| typedef GM INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static skiagm::GM* G0(void*) { return new GiantBitmapGM(SkShader::kClamp_TileMode); } |
| static skiagm::GM* G1(void*) { return new GiantBitmapGM(SkShader::kRepeat_TileMode); } |
| static skiagm::GM* G2(void*) { return new GiantBitmapGM(SkShader::kMirror_TileMode); } |
| |
| static skiagm::GMRegistry reg0(G0); |
| static skiagm::GMRegistry reg1(G1); |
| static skiagm::GMRegistry reg2(G2); |
| |