| /* |
| * 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 "../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() {} |
| |
| protected: |
| void onOnceBeforeDraw() override { |
| const SkColor colors[] = { |
| SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, |
| SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorYELLOW |
| }; |
| SkMatrix local; |
| local.setRotate(180); |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setShader(SkGradientShader::MakeSweep(0, 0, colors, nullptr, SK_ARRAY_COUNT(colors), |
| 0, &local)); |
| |
| sk_sp<SkTypeface> orig(sk_tool_utils::create_portable_typeface("serif", |
| SkFontStyle::FromOldStyle(SkTypeface::kBold))); |
| if (nullptr == orig) { |
| orig = SkTypeface::MakeDefault(); |
| } |
| fColorType = sk_make_sp<SkGTypeface>(orig, paint); |
| |
| 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 { |
| SkBlendMode fMode; |
| const char* fLabel; |
| } gModes[] = { |
| { SkBlendMode::kClear, "Clear" }, |
| { SkBlendMode::kSrc, "Src" }, |
| { SkBlendMode::kDst, "Dst" }, |
| { SkBlendMode::kSrcOver, "SrcOver" }, |
| { SkBlendMode::kDstOver, "DstOver" }, |
| { SkBlendMode::kSrcIn, "SrcIn" }, |
| { SkBlendMode::kDstIn, "DstIn" }, |
| { SkBlendMode::kSrcOut, "SrcOut" }, |
| { SkBlendMode::kDstOut, "DstOut" }, |
| { SkBlendMode::kSrcATop, "SrcATop" }, |
| { SkBlendMode::kDstATop, "DstATop" }, |
| |
| { SkBlendMode::kXor, "Xor" }, |
| { SkBlendMode::kPlus, "Plus" }, |
| { SkBlendMode::kModulate, "Modulate" }, |
| { SkBlendMode::kScreen, "Screen" }, |
| { SkBlendMode::kOverlay, "Overlay" }, |
| { SkBlendMode::kDarken, "Darken" }, |
| { SkBlendMode::kLighten, "Lighten" }, |
| { SkBlendMode::kColorDodge, "ColorDodge" }, |
| { SkBlendMode::kColorBurn, "ColorBurn" }, |
| { SkBlendMode::kHardLight, "HardLight" }, |
| { SkBlendMode::kSoftLight, "SoftLight" }, |
| { SkBlendMode::kDifference, "Difference" }, |
| { SkBlendMode::kExclusion, "Exclusion" }, |
| { SkBlendMode::kMultiply, "Multiply" }, |
| { SkBlendMode::kHue, "Hue" }, |
| { SkBlendMode::kSaturation, "Saturation" }, |
| { SkBlendMode::kColor, "Color" }, |
| { SkBlendMode::kLuminosity, "Luminosity" }, |
| }; |
| |
| const SkScalar w = SkIntToScalar(W); |
| const SkScalar h = SkIntToScalar(H); |
| SkMatrix m; |
| m.setScale(SkIntToScalar(6), SkIntToScalar(6)); |
| auto s = SkShader::MakeBitmapShader(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++) { |
| 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.setBlendMode(gModes[i].fMode); |
| 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); |
| } |
| } |
| } |
| |
| private: |
| SkBitmap fBG; |
| sk_sp<SkTypeface> fColorType; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new ColorTypeXfermodeGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |