| #include "SampleCode.h" |
| #include "SkColorPriv.h" |
| #include "SkShader.h" |
| #include "SkView.h" |
| #include "SkCanvas.h" |
| #include "SkUtils.h" |
| |
| static SkBitmap make_bitmap() { |
| SkBitmap bm; |
| const int N = 1; |
| SkColorTable* ctable = new SkColorTable(N); |
| |
| SkPMColor* c = ctable->lockColors(); |
| for (int i = 0; i < N; i++) { |
| c[i] = SkPackARGB32(0x80, 0x80, 0, 0); |
| } |
| ctable->unlockColors(true); |
| bm.setConfig(SkBitmap::kIndex8_Config, 1, 1); |
| bm.allocPixels(ctable); |
| ctable->unref(); |
| |
| bm.lockPixels(); |
| for (int y = 0; y < bm.height(); y++) { |
| uint8_t* p = bm.getAddr8(0, y); |
| for (int x = 0; x < bm.width(); x++) { |
| p[x] = 0; |
| } |
| } |
| bm.unlockPixels(); |
| return bm; |
| } |
| |
| class TinyBitmapView : public SkView { |
| SkBitmap fBM; |
| public: |
| TinyBitmapView() { |
| fBM = make_bitmap(); |
| } |
| |
| protected: |
| // overrides from SkEventSink |
| virtual bool onQuery(SkEvent* evt) { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "TinyBitmap"); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void drawBG(SkCanvas* canvas) { |
| SkIPoint size; |
| if (canvas->getViewport(&size)) { |
| SkDebugf(""); |
| } |
| canvas->drawColor(0xFFDDDDDD); |
| } |
| |
| static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) { |
| SkAutoLockPixels alp(*bm); // needed for ctable |
| bm->setIsOpaque(isOpaque); |
| SkColorTable* ctable = bm->getColorTable(); |
| if (ctable) { |
| ctable->setIsOpaque(isOpaque); |
| } |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| drawBG(canvas); |
| |
| SkShader* s = SkShader::CreateBitmapShader(fBM, SkShader::kRepeat_TileMode, |
| SkShader::kMirror_TileMode); |
| SkPaint paint; |
| paint.setShader(s)->unref(); |
| canvas->drawPaint(paint); |
| } |
| |
| private: |
| typedef SkView INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static SkView* MyFactory() { return new TinyBitmapView; } |
| static SkViewRegister reg(MyFactory); |
| |