void onDraw(SkCanvas* canvas) override {
SkAutoCanvasRestore acr(canvas, false);
SkPaint paint;
paint.setAntiAlias(true);
if (fInterp) {
SkScalar values[5];
SkInterpolator::Result res = fInterp->timeToValues(fTime, values);
fColor = floats_to_color(values);
canvas->save();
canvas->rotate(values[4], fR.centerX(), fR.centerY());
switch (res) {
case SkInterpolator::kFreezeEnd_Result:
delete fInterp;
fInterp = nullptr;
break;
default:
break;
}
}
paint.setColor(fColor);
canvas->drawRect(fR, paint);
}
static jint Interpolator_timeToValues(JNIEnv* env, jobject clazz, jlong interpHandle, jint msec, jfloatArray valueArray)
{
SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
SkInterpolatorBase::Result result;
float* values = valueArray ? env->GetFloatArrayElements(valueArray, NULL) : NULL;
result = interp->timeToValues(msec, (SkScalar*)values);
if (valueArray) {
int n = env->GetArrayLength(valueArray);
for (int i = 0; i < n; i++) {
values[i] = SkScalarToFloat(*(SkScalar*)&values[i]);
}
env->ReleaseFloatArrayElements(valueArray, values, 0);
}
return static_cast<jint>(result);
}
void onDrawContent(SkCanvas* canvas) override {
fCell.set(this->height() / 2, this->height() / 2);
SkScalar trans[2];
fTrans.timeToValues(fCurrTime, trans);
for (int y = 0; y < 2; ++y) {
for (int x = 0; x < 2; ++x) {
int index = y * 2 + x;
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(fCell.width() * x, fCell.height() * y);
SkRect r = SkRect::MakeWH(fCell.width(), fCell.height());
r.inset(4, 4);
canvas->clipRect(r);
this->drawHere(canvas, SkFilterQuality(index), trans[0], trans[1]);
}
}
this->drawBorders(canvas);
const SkScalar textX = fCell.width() * 2 + 30;
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(36);
SkString str;
str.appendScalar(fScale);
canvas->drawText(str.c_str(), str.size(), textX, 100, paint);
str.reset(); str.appendScalar(fAngle);
canvas->drawText(str.c_str(), str.size(), textX, 150, paint);
str.reset(); str.appendScalar(trans[0]);
canvas->drawText(str.c_str(), str.size(), textX, 200, paint);
str.reset(); str.appendScalar(trans[1]);
canvas->drawText(str.c_str(), str.size(), textX, 250, paint);
}
