reed@android.com | c645996 | 2009-08-25 19:15:31 +0000 | [diff] [blame] | 1 | #include "SampleCode.h" |
| 2 | #include "SkColorPriv.h" |
| 3 | #include "SkShader.h" |
| 4 | #include "SkView.h" |
| 5 | #include "SkCanvas.h" |
| 6 | #include "SkUtils.h" |
| 7 | |
| 8 | static SkBitmap make_bitmap() { |
| 9 | SkBitmap bm; |
| 10 | const int N = 1; |
| 11 | SkColorTable* ctable = new SkColorTable(N); |
| 12 | |
| 13 | SkPMColor* c = ctable->lockColors(); |
| 14 | for (int i = 0; i < N; i++) { |
| 15 | c[i] = SkPackARGB32(0x80, 0x80, 0, 0); |
| 16 | } |
| 17 | ctable->unlockColors(true); |
| 18 | bm.setConfig(SkBitmap::kIndex8_Config, 1, 1); |
| 19 | bm.allocPixels(ctable); |
| 20 | ctable->unref(); |
| 21 | |
| 22 | bm.lockPixels(); |
| 23 | for (int y = 0; y < bm.height(); y++) { |
| 24 | uint8_t* p = bm.getAddr8(0, y); |
| 25 | for (int x = 0; x < bm.width(); x++) { |
| 26 | p[x] = 0; |
| 27 | } |
| 28 | } |
| 29 | bm.unlockPixels(); |
| 30 | return bm; |
| 31 | } |
| 32 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 33 | class TinyBitmapView : public SampleView { |
reed@android.com | c645996 | 2009-08-25 19:15:31 +0000 | [diff] [blame] | 34 | SkBitmap fBM; |
| 35 | public: |
| 36 | TinyBitmapView() { |
| 37 | fBM = make_bitmap(); |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 38 | this->setBGColor(0xFFDDDDDD); |
reed@android.com | c645996 | 2009-08-25 19:15:31 +0000 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | protected: |
| 42 | // overrides from SkEventSink |
| 43 | virtual bool onQuery(SkEvent* evt) { |
| 44 | if (SampleCode::TitleQ(*evt)) { |
| 45 | SampleCode::TitleR(evt, "TinyBitmap"); |
| 46 | return true; |
| 47 | } |
| 48 | return this->INHERITED::onQuery(evt); |
| 49 | } |
| 50 | |
reed@android.com | c645996 | 2009-08-25 19:15:31 +0000 | [diff] [blame] | 51 | static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) { |
| 52 | SkAutoLockPixels alp(*bm); // needed for ctable |
| 53 | bm->setIsOpaque(isOpaque); |
| 54 | SkColorTable* ctable = bm->getColorTable(); |
| 55 | if (ctable) { |
| 56 | ctable->setIsOpaque(isOpaque); |
| 57 | } |
| 58 | } |
| 59 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 60 | virtual void onDrawContent(SkCanvas* canvas) { |
reed@android.com | c645996 | 2009-08-25 19:15:31 +0000 | [diff] [blame] | 61 | SkShader* s = SkShader::CreateBitmapShader(fBM, SkShader::kRepeat_TileMode, |
| 62 | SkShader::kMirror_TileMode); |
| 63 | SkPaint paint; |
| 64 | paint.setShader(s)->unref(); |
| 65 | canvas->drawPaint(paint); |
| 66 | } |
| 67 | |
| 68 | private: |
| 69 | typedef SkView INHERITED; |
| 70 | }; |
| 71 | |
| 72 | ////////////////////////////////////////////////////////////////////////////// |
| 73 | |
| 74 | static SkView* MyFactory() { return new TinyBitmapView; } |
| 75 | static SkViewRegister reg(MyFactory); |
| 76 | |