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private void ZoomPanCanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
this.Cursor = Cursors.Hand;
dragStartPoint = e.GetPosition(this);
}
private void ZoomPanCanvas_MouseMove(object sender, MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
Point point = e.GetPosition(this);
_pan.X += point.X - dragStartPoint.Value.X;
_pan.Y += point.Y - dragStartPoint.Value.Y;
dragStartPoint = point;
}
}
private void ZoomPanCanvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
this.Cursor = Cursors.Arrow;
dragStartPoint = null;
}
private void ZoomPanCanvas_MouseWheel(object sender, MouseWheelEventArgs e)
{
Point position = e.GetPosition(this);
scale *= e.Delta > 0 ? 1.1 : (1.0 / 1.1);
this.transform.ScaleAt(scale, scale, position.X, position.Y);
this.RenderTransform = new MatrixTransform(this.transform);
} |
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