public void ScrollToVisual(DrawingVisual drawingVisual)
{
Rect visualBound = drawingVisual.ContentBounds;
TranslateTransform translateTransform = drawingVisual.Transform as TranslateTransform;
if (translateTransform != null)
visualBound.Offset(new Vector(translateTransform.X, translateTransform.Y));
double offsetX;
double offsetY;
double scale;
//GetScrollOffset(visualBound, out offsetX, out offsetY, Key.None);
GetScaleScrollOffset(visualBound, out scale, out offsetX, out offsetY);
ZoomAndPanAnimationHelper animationHelper = new ZoomAndPanAnimationHelper(
offsetX, offsetY, scale, this, this.graphControl, true);
//double offsetX;
//double offsetY;
//GetScrollOffset(visualBound, out offsetX, out offsetY, Key.None);
//ZoomAndPanAnimationHelper animationHelper = new ZoomAndPanAnimationHelper(
// offsetX, offsetY, this, this.graphControl);
}
internal void HandleKeyDown(object sender, KeyEventArgs e)
{
//Self-TODO(Joy):this function need to be revised
if (radialMenu != null)
{
if (subRadialMenu != null)
subRadialMenu.UpdateKeyword(e);
else
radialMenu.UpdateKeyword(e);
graphCanvas.graphCanvas.Focus();
e.Handled = true;
return;
}
ModifierKeys modifier = Keyboard.Modifiers;
Key k = e.Key;
if (modifier.HasFlag(ModifierKeys.Control) && e.Key == Key.A)
{
foreach (uint nodeId in nodeVisuals.Values)
graphController.DoSelectComponent(nodeId, ModifierKeys.None);
ZoomToFit();
return;
}
if (modifier.HasFlag(ModifierKeys.Shift))
return;
if (e.Key == Key.Delete || e.Key == Key.Enter || e.Key == Key.Back)
return;
//scroll to left/right/top/bottom of the working space
if (e.Key == Key.Home
|| e.Key == Key.End
|| e.Key == Key.Prior || e.Key == Key.PageUp
|| e.Key == Key.Next || e.Key == Key.PageDown)
{
Rect workingRegion = GetNodeRegion();
if (workingRegion == Rect.Empty)
return;
double offsetX, offsetY;
GetScrollOffset(workingRegion, out offsetX, out offsetY, e.Key);
ZoomAndPanAnimationHelper animationHelper = new ZoomAndPanAnimationHelper(
offsetX, offsetY, this, this.graphControl);
e.Handled = true;
return;
}
}
private void ZoomToFit()
{
if (panning)
EndPan();
ScrollViewer scrollViewer = graphControl.canvasScrollViewer;
Grid grid = graphControl.canvasGrid;
ScaleTransform scaleTransform = graphControl.scaleTransform;
Rect frame = this.GetSelectedRegion();
//scale
double zoomInRatioX = scrollViewer.ActualWidth / frame.Width;
double zoomInRatioY = scrollViewer.ActualHeight / frame.Height;
if ((zoomInRatioX == 0) || (zoomInRatioY == 0))
return;
double newScale = Math.Min(zoomInRatioX, zoomInRatioY);
newScale = ConvertScale(newScale);
//Scroll Viewer Offset
zoomPanPivotPoint = new Point(frame.Left + frame.Width / 2, frame.Top + frame.Height / 2);
Point centerPosition = new Point(scrollViewer.ViewportWidth / 2, scrollViewer.ViewportHeight / 2);
double offsetX = zoomPanPivotPoint.X * newScale - centerPosition.X;
double offsetY = zoomPanPivotPoint.Y * newScale - centerPosition.Y;
//AnimationHelper(offsetX, newScale, Configurations.ShortAnimationTime);
ZoomAndPanAnimationHelper animationHelper = new ZoomAndPanAnimationHelper(offsetX, offsetY, newScale, this, this.graphControl, false);
}
