return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos,
data.fCount, tm, mapper);
}
-
+
static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center;
data.fPos, data.fCount, mapper);
}
+static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data,
+ SkShader::TileMode tm, SkUnitMapper* mapper) {
+ SkPoint center0, center1;
+ center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
+ SkScalarAve(pts[0].fY, pts[1].fY));
+ center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
+ SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
+ return SkGradientShader::CreateTwoPointRadial(
+ center1, (pts[1].fX - pts[0].fX) / 7,
+ center0, (pts[1].fX - pts[0].fX) / 2,
+ data.fColors, data.fPos, data.fCount, tm, mapper);
+}
+
typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data,
- SkShader::TileMode tm, SkUnitMapper* mapper);
+ SkShader::TileMode tm, SkUnitMapper* mapper);
static const GradMaker gGradMakers[] = {
- MakeLinear, MakeRadial, MakeSweep
+ MakeLinear, MakeRadial, MakeSweep, Make2Radial
};
///////////////////////////////////////////////////////////////////////////////
return SkString("gradients");
}
- SkISize onISize() { return make_isize(640, 380); }
+ SkISize onISize() { return make_isize(640, 510); }
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
static uint16_t gBG[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF };
class XfermodesGM : public GM {
- SkBitmap fBitmap;
SkBitmap fBG;
SkBitmap fSrcB, fDstB;
- void draw_mode(SkCanvas* canvas, SkXfermode* mode, int alpha) {
+ void draw_mode(SkCanvas* canvas, SkXfermode* mode, int alpha,
+ SkScalar x, SkScalar y) {
SkPaint p;
- canvas->drawBitmap(fSrcB, 0, 0, &p);
+ canvas->drawBitmap(fSrcB, x, y, &p);
p.setAlpha(alpha);
p.setXfermode(mode);
- canvas->drawBitmap(fDstB, 0, 0, &p);
+ canvas->drawBitmap(fDstB, x, y, &p);
}
public:
- XfermodesGM() {
- const int W = 64;
- const int H = 64;
-
- fBitmap.setConfig(SkBitmap::kARGB_8888_Config, W, H);
- fBitmap.allocPixels();
-
+ const static int W = 64;
+ const static int H = 64;
+ XfermodesGM() {
fBG.setConfig(SkBitmap::kARGB_4444_Config, 2, 2, 4);
fBG.setPixels(gBG);
fBG.setIsOpaque(true);
}
virtual SkISize onISize() {
- return make_isize(790, 480);
+ return make_isize(790, 640);
}
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) {
+ canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
+
this->drawBG(canvas);
const struct {
- SkXfermode::Mode fMode;
+ SkXfermode::Mode fMode;
const char* fLabel;
} gModes[] = {
{ SkXfermode::kClear_Mode, "Clear" },
{ SkXfermode::kExclusion_Mode, "Exclusion" },
};
- canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
-
- SkCanvas c(fBitmap);
- const SkScalar w = SkIntToScalar(fBitmap.width());
- const SkScalar h = SkIntToScalar(fBitmap.height());
+ const SkScalar w = SkIntToScalar(W);
+ const SkScalar h = SkIntToScalar(H);
SkShader* s = SkShader::CreateBitmapShader(fBG,
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
SkPaint labelP;
labelP.setAntiAlias(true);
labelP.setTextAlign(SkPaint::kCenter_Align);
-
+
const int W = 5;
SkScalar x0 = 0;
SkScalar x = x0, y = 0;
for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) {
SkXfermode* mode = SkXfermode::Create(gModes[i].fMode);
-
- fBitmap.eraseColor(0);
- draw_mode(&c, mode, twice ? 0x88 : 0xFF);
- SkSafeUnref(mode);
-
- SkPaint p;
+ SkAutoUnref aur(mode);
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);
+
+ SkPaint 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->saveLayer(&r, NULL, SkCanvas::kARGB_ClipLayer_SaveFlag);
+ // canvas->save();
+ draw_mode(canvas, mode, twice ? 0x88 : 0xFF, r.fLeft, r.fTop);
+ canvas->restore();
+ r.inset(-SK_ScalarHalf, -SK_ScalarHalf);
+ p.setStyle(SkPaint::kStroke_Style);
+ p.setShader(NULL);
+ canvas->drawRect(r, p);
+
+#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;