private bool CanDraw()
{
if (!StageSize.Equals(_stage.Size))
{
StageSize = _stage.Size;
}
return(!StageSize.IsZero());
}
private void FitBackground()
{
if (StageSize.IsZero())
{
return;
}
if (BgBmp == null)
{
ReloadBackground();
return;
}
(StageRect, BgFillRect) = ImageUtils.FitImage(StageSize, BgBmp);
vh = 0.5f * (BgBmp.SizeInPixels.Height - ( float )BgFillRect.Height);
ActivateBgDraw();
}
private async void ReloadBackground()
{
if (ResCreator == null || StageSize.IsZero())
{
return;
}
if (BackgroundUri == null || BackgroundUri.Scheme == "ms-appx")
{
BgBmp = new RandomStripe(Seed).DrawBitmap(ResCreator, ( int )LayoutSettings.DisplayWidth, ( int )LayoutSettings.DisplayHeight);
}
else
{
BgBmp = await CanvasBitmap.LoadAsync(ResCreator, BackgroundUri);
}
FitBackground();
}