| /* |
| * Copyright 2014 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 "SkBitmap.h" |
| #include "SkGradientShader.h" |
| #include "SkShader.h" |
| #include "SkXfermode.h" |
| #include "../src/fonts/SkGScalerContext.h" |
| |
| namespace skiagm { |
| |
| static uint16_t gData[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF }; |
| |
| class ColorTypeXfermodeGM : public GM { |
| public: |
| const static int W = 64; |
| const static int H = 64; |
| ColorTypeXfermodeGM() |
| : fColorType(nullptr) { |
| } |
| |
| virtual ~ColorTypeXfermodeGM() { |
| SkSafeUnref(fColorType); |
| } |
| |
| protected: |
| void onOnceBeforeDraw() override { |
| const SkColor colors[] = { |
| SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, |
| SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorYELLOW |
| }; |
| SkMatrix local; |
| local.setRotate(180); |
| SkShader* s = SkGradientShader::CreateSweep(0,0, colors, nullptr, |
| SK_ARRAY_COUNT(colors), 0, &local); |
| |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setShader(s)->unref(); |
| |
| SkTypeface* orig = sk_tool_utils::create_portable_typeface("serif", |
| SkTypeface::kBold); |
| if (nullptr == orig) { |
| orig = SkTypeface::RefDefault(); |
| } |
| fColorType = new SkGTypeface(orig, paint); |
| orig->unref(); |
| |
| fBG.installPixels(SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, |
| kOpaque_SkAlphaType), gData, 4); |
| } |
| |
| virtual SkString onShortName() override { |
| return SkString("colortype_xfermodes"); |
| } |
| |
| virtual SkISize onISize() override { |
| return SkISize::Make(400, 640); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) override { |
| canvas->translate(SkIntToScalar(10), SkIntToScalar(20)); |
| |
| const struct { |
| SkXfermode::Mode fMode; |
| const char* fLabel; |
| } gModes[] = { |
| { SkXfermode::kClear_Mode, "Clear" }, |
| { SkXfermode::kSrc_Mode, "Src" }, |
| { SkXfermode::kDst_Mode, "Dst" }, |
| { SkXfermode::kSrcOver_Mode, "SrcOver" }, |
| { SkXfermode::kDstOver_Mode, "DstOver" }, |
| { SkXfermode::kSrcIn_Mode, "SrcIn" }, |
| { SkXfermode::kDstIn_Mode, "DstIn" }, |
| { SkXfermode::kSrcOut_Mode, "SrcOut" }, |
| { SkXfermode::kDstOut_Mode, "DstOut" }, |
| { SkXfermode::kSrcATop_Mode, "SrcATop" }, |
| { SkXfermode::kDstATop_Mode, "DstATop" }, |
| |
| { SkXfermode::kXor_Mode, "Xor" }, |
| { SkXfermode::kPlus_Mode, "Plus" }, |
| { SkXfermode::kModulate_Mode, "Modulate" }, |
| { SkXfermode::kScreen_Mode, "Screen" }, |
| { SkXfermode::kOverlay_Mode, "Overlay" }, |
| { SkXfermode::kDarken_Mode, "Darken" }, |
| { SkXfermode::kLighten_Mode, "Lighten" }, |
| { SkXfermode::kColorDodge_Mode, "ColorDodge" }, |
| { SkXfermode::kColorBurn_Mode, "ColorBurn" }, |
| { SkXfermode::kHardLight_Mode, "HardLight" }, |
| { SkXfermode::kSoftLight_Mode, "SoftLight" }, |
| { SkXfermode::kDifference_Mode, "Difference" }, |
| { SkXfermode::kExclusion_Mode, "Exclusion" }, |
| { SkXfermode::kMultiply_Mode, "Multiply" }, |
| { SkXfermode::kHue_Mode, "Hue" }, |
| { SkXfermode::kSaturation_Mode, "Saturation" }, |
| { SkXfermode::kColor_Mode, "Color" }, |
| { SkXfermode::kLuminosity_Mode, "Luminosity" }, |
| }; |
| |
| const SkScalar w = SkIntToScalar(W); |
| const SkScalar h = SkIntToScalar(H); |
| SkMatrix m; |
| m.setScale(SkIntToScalar(6), SkIntToScalar(6)); |
| SkShader* s = SkShader::CreateBitmapShader(fBG, |
| SkShader::kRepeat_TileMode, |
| SkShader::kRepeat_TileMode, |
| &m); |
| |
| SkPaint labelP; |
| labelP.setAntiAlias(true); |
| sk_tool_utils::set_portable_typeface(&labelP); |
| labelP.setTextAlign(SkPaint::kCenter_Align); |
| |
| SkPaint textP; |
| textP.setAntiAlias(true); |
| textP.setTypeface(fColorType); |
| textP.setTextSize(SkIntToScalar(70)); |
| |
| const int W = 5; |
| |
| SkScalar x0 = 0; |
| SkScalar y0 = 0; |
| SkScalar x = x0, y = y0; |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) { |
| SkXfermode* mode = SkXfermode::Create(gModes[i].fMode); |
| SkAutoUnref aur(mode); |
| SkRect r; |
| r.set(x, y, x+w, y+h); |
| |
| SkPaint p; |
| p.setStyle(SkPaint::kFill_Style); |
| p.setShader(s); |
| canvas->drawRect(r, p); |
| |
| r.inset(-SK_ScalarHalf, -SK_ScalarHalf); |
| p.setStyle(SkPaint::kStroke_Style); |
| p.setShader(nullptr); |
| canvas->drawRect(r, p); |
| |
| textP.setXfermode(mode); |
| canvas->drawText("H", 1, x+ w/10.f, y + 7.f*h/8.f, textP); |
| #if 1 |
| canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel), |
| x + w/2, y - labelP.getTextSize()/2, labelP); |
| #endif |
| x += w + SkIntToScalar(10); |
| if ((i % W) == W - 1) { |
| x = x0; |
| y += h + SkIntToScalar(30); |
| } |
| } |
| s->unref(); |
| } |
| |
| private: |
| SkBitmap fBG; |
| SkTypeface* fColorType; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new ColorTypeXfermodeGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |