| #include "SampleCode.h" |
| #include "SkView.h" |
| #include "SkCanvas.h" |
| #include "Sk64.h" |
| #include "SkCornerPathEffect.h" |
| #include "SkGradientShader.h" |
| #include "SkGraphics.h" |
| #include "SkImageDecoder.h" |
| #include "SkKernel33MaskFilter.h" |
| #include "SkPath.h" |
| #include "SkRandom.h" |
| #include "SkRegion.h" |
| #include "SkShader.h" |
| #include "SkUtils.h" |
| #include "SkColorPriv.h" |
| #include "SkColorFilter.h" |
| #include "SkTime.h" |
| #include "SkTypeface.h" |
| #include "SkXfermode.h" |
| |
| #include "SkStream.h" |
| #include "SkXMLParser.h" |
| #include "SkColorPriv.h" |
| #include "SkImageDecoder.h" |
| |
| static int newscale(U8CPU a, U8CPU b, int shift) { |
| unsigned prod = a * b + (1 << (shift - 1)); |
| return (prod + (prod >> shift)) >> shift; |
| } |
| |
| static void test_srcover565(SkCanvas* canvas) { |
| const int width = 32; |
| SkBitmap bm1, bm2, bm3; |
| bm1.setConfig(SkBitmap::kRGB_565_Config, width, 256); bm1.allocPixels(NULL); |
| bm2.setConfig(SkBitmap::kRGB_565_Config, width, 256); bm2.allocPixels(NULL); |
| bm3.setConfig(SkBitmap::kRGB_565_Config, width, 256); bm3.allocPixels(NULL); |
| |
| int rgb = 0x18; |
| int r = rgb >> 3; |
| int g = rgb >> 2; |
| uint16_t dst = SkPackRGB16(r, g, r); |
| for (int alpha = 0; alpha <= 255; alpha++) { |
| SkPMColor pm = SkPreMultiplyARGB(alpha, rgb, rgb, rgb); |
| uint16_t newdst = SkSrcOver32To16(pm, dst); |
| sk_memset16(bm1.getAddr16(0, alpha), newdst, bm1.width()); |
| |
| int ia = 255 - alpha; |
| int iscale = SkAlpha255To256(ia); |
| int dr = (SkGetPackedR32(pm) + (r * iscale >> 5)) >> 3; |
| int dg = (SkGetPackedG32(pm) + (g * iscale >> 6)) >> 2; |
| |
| sk_memset16(bm2.getAddr16(0, alpha), SkPackRGB16(dr, dg, dr), bm2.width()); |
| |
| int dr2 = (SkMulDiv255Round(alpha, rgb) + newscale(r, ia, 5)) >> 3; |
| int dg2 = (SkMulDiv255Round(alpha, rgb) + newscale(g, ia, 6)) >> 2; |
| |
| sk_memset16(bm3.getAddr16(0, alpha), SkPackRGB16(dr2, dg2, dr2), bm3.width()); |
| |
| // if (mr != dr || mg != dg) |
| { |
| // SkDebugf("[%d] macro [%d %d] inline [%d %d] new [%d %d]\n", alpha, mr, mg, dr, dg, dr2, dg2); |
| } |
| } |
| |
| SkScalar dx = SkIntToScalar(width+4); |
| |
| canvas->drawBitmap(bm1, 0, 0, NULL); canvas->translate(dx, 0); |
| canvas->drawBitmap(bm2, 0, 0, NULL); canvas->translate(dx, 0); |
| canvas->drawBitmap(bm3, 0, 0, NULL); canvas->translate(dx, 0); |
| |
| SkRect rect = { 0, 0, SkIntToScalar(bm1.width()), SkIntToScalar(bm1.height()) }; |
| SkPaint p; |
| p.setARGB(0xFF, rgb, rgb, rgb); |
| canvas->drawRect(rect, p); |
| } |
| |
| static void make_bitmaps(int w, int h, SkBitmap* src, SkBitmap* dst) { |
| src->setConfig(SkBitmap::kARGB_8888_Config, w, h); |
| src->allocPixels(); |
| src->eraseColor(0); |
| |
| SkCanvas c(*src); |
| SkPaint p; |
| SkRect r; |
| SkScalar ww = SkIntToScalar(w); |
| SkScalar hh = SkIntToScalar(h); |
| |
| p.setAntiAlias(true); |
| p.setColor(0xFFFFCC44); |
| r.set(0, 0, ww*3/4, hh*3/4); |
| c.drawOval(r, p); |
| |
| dst->setConfig(SkBitmap::kARGB_8888_Config, w, h); |
| dst->allocPixels(); |
| dst->eraseColor(0); |
| c.setBitmapDevice(*dst); |
| |
| p.setColor(0xFF66AAFF); |
| r.set(ww/3, hh/3, ww*19/20, hh*19/20); |
| c.drawRect(r, p); |
| } |
| |
| static uint16_t gBG[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF }; |
| |
| class XfermodesView : public SkView { |
| SkBitmap fBitmap; |
| SkBitmap fBG; |
| SkBitmap fSrcB, fDstB; |
| |
| void draw_mode(SkCanvas* canvas, SkXfermode* mode, int alpha) { |
| SkPaint p; |
| |
| canvas->drawBitmap(fSrcB, 0, 0, &p); |
| p.setAlpha(alpha); |
| p.setXfermode(mode); |
| canvas->drawBitmap(fDstB, 0, 0, &p); |
| } |
| |
| public: |
| XfermodesView() { |
| const int W = 64; |
| const int H = 64; |
| |
| fBitmap.setConfig(SkBitmap::kARGB_8888_Config, W, H); |
| fBitmap.allocPixels(); |
| |
| fBG.setConfig(SkBitmap::kARGB_4444_Config, 2, 2, 4); |
| fBG.setPixels(gBG); |
| fBG.setIsOpaque(true); |
| |
| make_bitmaps(W, H, &fSrcB, &fDstB); |
| } |
| |
| protected: |
| // overrides from SkEventSink |
| virtual bool onQuery(SkEvent* evt) { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "Xfermodes"); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void drawBG(SkCanvas* canvas) { |
| canvas->drawColor(SK_ColorWHITE); |
| return; |
| SkShader* s = SkShader::CreateBitmapShader(fBG, |
| SkShader::kRepeat_TileMode, |
| SkShader::kRepeat_TileMode); |
| SkPaint p; |
| SkMatrix m; |
| |
| p.setShader(s)->unref(); |
| m.setScale(SkIntToScalar(8), SkIntToScalar(8)); |
| s->setLocalMatrix(m); |
| canvas->drawPaint(p); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| this->drawBG(canvas); |
| |
| if (false) { |
| test_srcover565(canvas); |
| } |
| |
| if (false) { |
| SkPaint paint; |
| paint.setFlags(0x43); |
| paint.setTextSize(SkIntToScalar(128)); |
| SkMatrix matrix; |
| matrix.reset(); |
| matrix.set(0, 0x0019d049); |
| matrix.set(2, 0x712cf400); |
| matrix.set(4, 0x0019c96f); |
| matrix.set(5, 0xF8d76598); |
| canvas->concat(matrix); |
| canvas->drawText("HamburgefonsHamburgefonsHamburgefonsHamburgefons", |
| 48, 0, 0, paint); |
| return; |
| } |
| |
| const struct { |
| SkPorterDuff::Mode fMode; |
| const char* fLabel; |
| } gModes[] = { |
| { SkPorterDuff::kClear_Mode, "Clear" }, |
| { SkPorterDuff::kSrc_Mode, "Src" }, |
| { SkPorterDuff::kDst_Mode, "Dst" }, |
| { SkPorterDuff::kSrcOver_Mode, "SrcOver" }, |
| { SkPorterDuff::kDstOver_Mode, "DstOver" }, |
| { SkPorterDuff::kSrcIn_Mode, "SrcIn" }, |
| { SkPorterDuff::kDstIn_Mode, "DstIn" }, |
| { SkPorterDuff::kSrcOut_Mode, "SrcOut" }, |
| { SkPorterDuff::kDstOut_Mode, "DstOut" }, |
| { SkPorterDuff::kSrcATop_Mode, "SrcATop" }, |
| { SkPorterDuff::kDstATop_Mode, "DstATop" }, |
| { SkPorterDuff::kXor_Mode, "Xor" }, |
| { SkPorterDuff::kDarken_Mode, "Darken" }, |
| { SkPorterDuff::kLighten_Mode, "Lighten" }, |
| { SkPorterDuff::kMultiply_Mode, "Multiply" }, |
| { SkPorterDuff::kScreen_Mode, "Screen" } |
| }; |
| |
| canvas->translate(SkIntToScalar(10), SkIntToScalar(20)); |
| |
| SkCanvas c(fBitmap); |
| const SkScalar w = SkIntToScalar(fBitmap.width()); |
| const SkScalar h = SkIntToScalar(fBitmap.height()); |
| SkShader* s = SkShader::CreateBitmapShader(fBG, |
| SkShader::kRepeat_TileMode, |
| SkShader::kRepeat_TileMode); |
| SkMatrix m; |
| m.setScale(SkIntToScalar(6), SkIntToScalar(6)); |
| s->setLocalMatrix(m); |
| |
| SkPaint labelP; |
| labelP.setAntiAlias(true); |
| labelP.setTextAlign(SkPaint::kCenter_Align); |
| |
| SkScalar x0 = 0; |
| for (int twice = 0; twice < 2; twice++) { |
| SkScalar x = x0, y = 0; |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) { |
| SkXfermode* mode = SkPorterDuff::CreateXfermode(gModes[i].fMode); |
| |
| fBitmap.eraseColor(0); |
| draw_mode(&c, mode, twice ? 0x88 : 0xFF); |
| mode->safeUnref(); |
| |
| SkPaint p; |
| SkRect r; |
| r.set(x, y, x+w, y+h); |
| r.inset(-SK_ScalarHalf, -SK_ScalarHalf); |
| p.setStyle(SkPaint::kStroke_Style); |
| canvas->drawRect(r, p); |
| p.setStyle(SkPaint::kFill_Style); |
| p.setShader(s); |
| r.inset(SK_ScalarHalf, SK_ScalarHalf); |
| canvas->drawRect(r, p); |
| |
| canvas->drawBitmap(fBitmap, x, y, NULL); |
| |
| canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel), |
| x + w/2, y - labelP.getTextSize()/2, labelP); |
| |
| x += w + SkIntToScalar(10); |
| if ((i & 3) == 3) { |
| x = x0; |
| y += h + SkIntToScalar(30); |
| } |
| } |
| x0 += SkIntToScalar(330); |
| } |
| s->unref(); |
| } |
| |
| private: |
| typedef SkView INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static SkView* MyFactory() { return new XfermodesView; } |
| static SkViewRegister reg(MyFactory); |
| |