//-------------------------------------------------------------------
//
// Public Methods
//
//---------------------------------------------------------------------
#region Public Methods
public static FixedSOMImage Create(FixedPage page, Image image, FixedNode fixedNode)
{
Uri imageUri = null;
if (image.Source is BitmapImage)
{
BitmapImage imageSource = image.Source as BitmapImage;
imageUri = imageSource.UriSource;
}
else if (image.Source is BitmapFrame)
{
BitmapFrame imageSource = image.Source as BitmapFrame;
imageUri = new Uri(imageSource.ToString(), UriKind.RelativeOrAbsolute);
}
Rect sourceRect = new Rect(image.RenderSize);
GeneralTransform transform = image.TransformToAncestor(page);
return new FixedSOMImage(sourceRect, transform, imageUri, fixedNode, image);
}
public void ScaleImage(System.Windows.Point scalePoint, double scaleRatio)
{
if (!EnableImageScale)
{
return;
}
if (ImageWindow.Stretch == Stretch.Uniform)
{
return;
}
if (ImageWindowWidth == 0)
{
if (ScaleTransform.ScaleX == 1 && ScaleTransform.ScaleY == 1)
{
ImageWindowWidth = ImageWindow.ActualWidth;
ImageWindowHeight = ImageWindow.ActualHeight;
}
}
if (ScaleTransform.ScaleX < MinScale && ScaleTransform.ScaleY < MinScale && scaleRatio < 1)
{
return;
}
if (ScaleTransform.ScaleX > MaxScale && ScaleTransform.ScaleY > MaxScale && scaleRatio > 1)
{
return;
}
ScaleTransform.CenterX = scalePoint.X;
ScaleTransform.CenterY = scalePoint.Y;
ScaleTransform.ScaleX *= scaleRatio;
ScaleTransform.ScaleY *= scaleRatio;
if (scaleRatio < 1)
{
Window window = Window.GetWindow(ImageWindow);
System.Windows.Point point = ImageWindow.TransformToAncestor(window).Transform(new System.Windows.Point(0, 0));
if (point.X - ImageWindowTopLeftPoint.X > 0)
{
TranslateTransform.X -= point.X - ImageWindowTopLeftPoint.X;
}
if (point.X - ImageWindowTopLeftPoint.X + ImageWindowWidth * ScaleTransform.ScaleX < ImageWindowWidth)
{
TranslateTransform.X += ImageWindowWidth * (1 - ScaleTransform.ScaleX) - (point.X - ImageWindowTopLeftPoint.X);
}
if (point.Y - ImageWindowTopLeftPoint.Y > 0)
{
TranslateTransform.Y -= point.Y - ImageWindowTopLeftPoint.Y;
}
if (point.Y - ImageWindowTopLeftPoint.Y + ImageWindowHeight * ScaleTransform.ScaleY < ImageWindowHeight)
{
TranslateTransform.Y = ImageWindowHeight * (1 - ScaleTransform.ScaleY) - (point.Y - ImageWindowTopLeftPoint.Y);
}
}
}