/// <summary>
/// Convert a slide as image
/// </summary>
/// <param name="slide">The slide to be converted</param>
/// <returns></returns>
private async Task <String> ConvertSlide(ISlide slide)
{
string mainImageFileName;
string thumbImageFileName;
if (_presentation.Slides[0].SlideNumber > 0)
{
mainImageFileName = "Slide " + slide.SlideNumber.ToString() + ".jpg";
thumbImageFileName = "ThumbSlide " + slide.SlideNumber.ToString() + ".jpg";
}
else
{
mainImageFileName = "Slide " + (slide.SlideNumber + 1) + ".jpg";
thumbImageFileName = "ThumbSlide " + (slide.SlideNumber + 1) + ".jpg";
}
StorageFile mainImageStorageFile = await _localFolder.CreateFileAsync(mainImageFileName, CreationCollisionOption.ReplaceExisting);
StorageFile thumbImageStorageFile = await _localFolder.CreateFileAsync(thumbImageFileName, CreationCollisionOption.ReplaceExisting);
RenderingOptions options = new RenderingOptions()
{
ScaleX = 0.25f, ScaleY = 0.25f
};
await slide.SaveAsImageAsync(mainImageStorageFile, _cancellationToken.Token);
await slide.SaveAsImageAsync(thumbImageStorageFile, options, _cancellationToken.Token);
if (LoadingStatusCanvas != null && slide.SlideNumber == _slideCount)
{
LoadingStatusCanvas.Visibility = Visibility.Collapsed;
}
_convertedSlides = slide.SlideNumber;
return(mainImageStorageFile.Path);
}
