private void CaptureBeginState()
{
if (!CanZoom())
{
return;
}
IImageSpatialTransform originator = GetSelectedImageTransform();
_applicator = new ImageOperationApplicator(this.SelectedPresentationImage, _operation);
_memorableCommand = new MemorableUndoableCommand(originator);
_memorableCommand.BeginState = originator.CreateMemento();
}
private static Bitmap DrawWysiwygImageToBitmap(IPresentationImage image, Rectangle displayRectangle, float scale, float dpi)
{
IImageSpatialTransform transform = (IImageSpatialTransform)((ISpatialTransformProvider)image).SpatialTransform;
object restoreMemento = transform.CreateMemento();
try
{
int width = (int)(displayRectangle.Width * scale);
int height = (int)(displayRectangle.Height * scale);
transform.Scale *= scale;
return(ImageDrawToBitmap(image, width, height, dpi));
}
finally
{
transform.SetMemento(restoreMemento);
}
}
private static Bitmap DrawCompleteImageToBitmap(IPresentationImage image, float scale, float dpi)
{
IImageSpatialTransform transform = (IImageSpatialTransform)((ISpatialTransformProvider)image).SpatialTransform;
object restoreMemento = transform.CreateMemento();
try
{
Rectangle imageRectangle = new Rectangle(new Point(0, 0), image.SceneSize);
transform.Initialize();
transform.ScaleToFit = false;
transform.Scale = scale;
RectangleF displayRectangle = transform.ConvertToDestination(imageRectangle);
int width = (int)Math.Round(displayRectangle.Width);
int height = (int)Math.Round(displayRectangle.Height);
transform.ScaleToFit = true;
return(ImageDrawToBitmap(image, width, height, dpi));
}
finally
{
transform.SetMemento(restoreMemento);
}
}