void Spinner::Private::Draw(const Context &context) {
angle += 5.f;
if (angle > 360.f) angle = 0.f;
Canvas *canvas = context.canvas();
int scale = context.surface()->GetScale();
canvas->Scale(scale, scale);
const RectF &rect = proprietor()->GetBounds();
float radius = base::Clamp(std::min(rect.width(), rect.height()) / 2.f - 50.f,
50.f, 200.f);
Paint paint;
paint.SetAntiAlias(true);
paint.SetColor(background);
paint.SetStyle(Paint::Style::kStyleFill);
canvas->DrawRect(rect, paint);
paint.SetColor(ColorF(foreground));
paint.SetStyle(Paint::Style::kStyleStroke);
paint.SetStrokeWidth(6.f);
canvas->DrawArc(RectF(rect.center_x() - radius,
rect.center_y() - radius,
rect.center_x() + radius,
rect.center_y() + radius),
angle, 300.f, false, paint);
frame_callback.Setup(context.surface());
}
virtual void OnDraw(const Context &context) override {
using wiztk::graphic::Canvas;
using wiztk::graphic::Paint;
const RectF &rect = GetBounds();
int scale = context.surface()->GetScale();
Canvas *canvas = context.canvas();
canvas->Save();
canvas->Scale(scale, scale);
Paint paint;
paint.SetColor(ColorF(0.855f, 0.855f, 0.165f, .9f));
canvas->DrawRect(rect, paint);
canvas->Restore();
SkCanvas *sk_canvas = canvas->GetSkCanvas();
SkImageInfo info = SkImageInfo::MakeN32(400, 400, kPremul_SkAlphaType);
sk_sp<SkSurface> surface = sk_canvas->makeSurface(info);
SkCanvas *top_canvas = surface->getCanvas();
SkRect top_rect = SkRect::MakeXYWH(50, 50, 100, 100);
SkPaint top_paint;
top_paint.setColor(0xFFFF0000);
top_canvas->drawRect(top_rect, top_paint);
top_canvas->flush();
surface->draw(sk_canvas, 100, 100, nullptr);
canvas->Flush();
}