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/*
* 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(NULL) {
}
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, NULL,
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 (NULL == orig) {
orig = SkTypeface::RefDefault();
}
fColorType = SkNEW_ARGS(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(NULL);
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);
}
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