static void test_alphagradients(SkCanvas* canvas) {
SkRect r;
r.set(SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(410), SkIntToScalar(30));
SkPaint p, p2;
p2.setStyle(SkPaint::kStroke_Style);
p.setShader(setgrad(r, 0xFF00FF00, 0x0000FF00))->unref();
canvas->drawRect(r, p);
canvas->drawRect(r, p2);
r.offset(0, r.height() + SkIntToScalar(4));
p.setShader(setgrad(r, 0xFF00FF00, 0x00000000))->unref();
canvas->drawRect(r, p);
canvas->drawRect(r, p2);
r.offset(0, r.height() + SkIntToScalar(4));
p.setShader(setgrad(r, 0xFF00FF00, 0x00FF0000))->unref();
canvas->drawRect(r, p);
canvas->drawRect(r, p2);
}
void SkSliderView::onDraw(SkCanvas* canvas)
{
this->INHERITED::onDraw(canvas);
U16CPU value = SkMax32(0, SkMin32(fValue, fMax));
SkRect r;
SkPaint p;
r.set(0, 0, this->width(), this->height());
p.setAntiAliasOn(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SK_Scalar1);
r.inset(SK_Scalar1/2, SK_Scalar1/2);
canvas->drawRect(r, p);
if (fMax)
{
SkFixed percent = SkFixedDiv(value, fMax);
r.inset(SK_Scalar1/2, SK_Scalar1/2);
r.fRight = r.fLeft + SkScalarMul(r.width(), SkFixedToScalar(percent));
p.setStyle(SkPaint::kFill_Style);
setgrad(&p, r);
canvas->drawRect(r, p);
}
#if 0
r.set(0, 0, this->width(), this->height());
r.inset(SK_Scalar1, SK_Scalar1);
r.inset(r.width()/2, 0);
p.setColor(SK_ColorBLACK);
canvas->drawLine(*(SkPoint*)&r.fLeft, *(SkPoint*)&r.fRight, p);
#endif
}
