private void Preview_Click(object sender, EventArgs e)
{
if (Img != null)
{
var detail = new ImgDetail(Img);
detail.ShowDialog();
}
}
void BrdFrame_ManipulationDelta(object sender, System.Windows.Input.ManipulationDeltaEventArgs e)
{
if (e.PinchManipulation == null)
{
//Drag
double horizontalChange = e.DeltaManipulation.Translation.X;
double verticalChange = e.DeltaManipulation.Translation.Y;
//좌측으로
if (horizontalChange < 0 && protectDirection != DragDirection.Left)
{
transform.TranslateX += horizontalChange;
transform.TranslateY += verticalChange;
protectDirection = DragDirection.None;
}
//우측으로
else if (horizontalChange > 0 && protectDirection != DragDirection.Right)
{
transform.TranslateX += horizontalChange;
transform.TranslateY += verticalChange;
protectDirection = DragDirection.None;
}
else if (verticalChange < 0 && protectDirection != DragDirection.Top)
{
//위로
transform.TranslateX += horizontalChange;
transform.TranslateY += verticalChange;
protectDirection = DragDirection.None;
}
else if (verticalChange > 0 && protectDirection != DragDirection.Bottom)
{
//아래로
transform.TranslateX += horizontalChange;
transform.TranslateY += verticalChange;
protectDirection = DragDirection.None;
}
else
{
return;
}
//일단 움직이면 축소 가능하도록 설정
canZoomOut = true;
GeneralTransform gtf = ImgDetail.TransformToVisual(ImgFrame);
Point pt = gtf.Transform(new Point(ImgDetail.ActualWidth, ImgDetail.ActualHeight));
//좌측선
if (pt.X < innerRect.Left)
{
transform.TranslateX += innerRect.Left - pt.X;
protectDirection = DragDirection.Left;
canZoomOut = false;
}
//상단선
if (pt.Y < innerRect.Top)
{
transform.TranslateY += innerRect.Top - pt.Y;
protectDirection = DragDirection.Top;
canZoomOut = false;
}
gtf = ImgFrame.TransformToVisual(ImgDetail);
pt = gtf.Transform(new Point(innerRect.Left + innerRect.Width, innerRect.Top + innerRect.Height));
//우측선
if (pt.X < 0)
{
transform.TranslateX += pt.X;
protectDirection = DragDirection.Right;
canZoomOut = false;
}
//하단선
if (pt.Y < 0)
{
transform.TranslateY += pt.Y;
protectDirection = DragDirection.Bottom;
canZoomOut = false;
}
}
else
{
//Pinch
double distanceRatio = e.PinchManipulation.CumulativeScale;
Size scale = new Size(currentScale.X * distanceRatio, currentScale.Y * distanceRatio);
bool isZoomIn = scale.Width > transform.ScaleX;
if (isZoomIn)
{
canZoomOut = true;
protectDirection = DragDirection.None;
}
if (scale.Width <= SCALE_MAX && (canZoomOut || isZoomIn))
{
//축소일때 최소영역보다 이하이면 축소하지 않음
if (ImgDetail.ActualWidth * scale.Width >= innerRect.Width / 2 &&
ImgDetail.ActualHeight * scale.Height >= innerRect.Height / 2)
{
transform.ScaleX = scale.Width;
transform.ScaleY = scale.Height;
Point inPoint = new Point(innerRect.Left + innerRect.Width, innerRect.Top + innerRect.Height);
CompensationPinch(distanceRatio, ImgFrame, ImgDetail, inPoint, 0, true);
CompensationPinch(distanceRatio, ImgFrame, ImgDetail, inPoint, 0, false);
inPoint = new Point(ImgDetail.ActualWidth, ImgDetail.ActualHeight);
CompensationPinch(distanceRatio, ImgDetail, ImgFrame, inPoint, innerRect.Left, true);
CompensationPinch(distanceRatio, ImgDetail, ImgFrame, inPoint, innerRect.Top, false);
}
}
}
}
