internal ResizeControlSplitter(DockCanvas canvas, SplitContainer resizeControl)
{
this.canvas = canvas;
ResizeControl = resizeControl;
if (ResizeControl != null)
{
UpdateCursor();
}
}
internal void UpdateCursor()
{
switch (DockCanvas.GetDock(ResizeControl))
{
case Dock.Left:
case Dock.Right:
Cursor = Cursors.SizeWE;
break;
default:
Cursor = Cursors.SizeNS;
break;
}
}
private void OnDragStarted()
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(ResizeControl);
if (adornerLayer != null)
{
resizeData = new ResizeData
{
SplitterDockSide = DockCanvas.GetDock(ResizeControl),
Parent = ResizeControl
};
switch (resizeData.SplitterDockSide)
{
case Dock.Left:
resizeData.MinOffset = 15.0 - ResizeControl.ContentSize;
resizeData.MaxOffset = canvas.ClientBounds.Width - 32.0;
break;
case Dock.Top:
resizeData.MinOffset = 15.0 - ResizeControl.ContentSize;
resizeData.MaxOffset = canvas.ClientBounds.Height - 32.0;
break;
case Dock.Right:
resizeData.MaxOffset = ResizeControl.ContentSize - 15.0;
resizeData.MinOffset = 32.0 - canvas.ClientBounds.Width;
break;
case Dock.Bottom:
resizeData.MaxOffset = ResizeControl.ContentSize - 15.0;
resizeData.MinOffset = 32.0 - canvas.ClientBounds.Height;
break;
}
resizeData.PreviewAdorner = new SplitPreviewAdorner(this);
adornerLayer.Add(resizeData.PreviewAdorner);
}
}
protected override Size ArrangeOverride(Size finalSize)
{
// Calculate the final rectangle
Rect final = new Rect(
0.0,
0.0,
finalSize.Width,
finalSize.Height);
int index = 0;
// Iterate through the containers
foreach (SplitContainer container in parent.SplitContainers)
{
// Determine the dock side of each split container
Dock dockSide = DockCanvas.GetDock(container);
// Depending on the dock side, we need to arrange the container differently
switch (dockSide)
{
case Dock.Left:
container.Arrange(
new Rect(
final.X,
final.Y,
container.DesiredSize.Width,
final.Height));
splitters[index].Arrange(
new Rect(
final.X + container.DesiredSize.Width,
final.Y,
splitters[index].DesiredSize.Width,
final.Height));
final.X += container.DesiredSize.Width + splitters[index].DesiredSize.Width;
final.Width -= container.DesiredSize.Width + splitters[index].DesiredSize.Width;
break;
case Dock.Top:
container.Arrange(
new Rect(
final.X,
final.Y,
final.Width,
container.DesiredSize.Height));
splitters[index].Arrange(
new Rect(
final.X,
final.Y + container.DesiredSize.Height,
final.Width,
splitters[index].DesiredSize.Height));
final.Y += container.DesiredSize.Height + splitters[index].DesiredSize.Height;
final.Height -= container.DesiredSize.Height + splitters[index].DesiredSize.Height;
break;
case Dock.Right:
container.Arrange(
new Rect(
final.Right - container.DesiredSize.Width,
final.Y,
container.DesiredSize.Width,
final.Height));
splitters[index].Arrange(
new Rect(
final.Right - container.DesiredSize.Width - splitters[index].DesiredSize.Width,
final.Y,
splitters[index].DesiredSize.Width,
final.Height));
final.Width -= container.DesiredSize.Width + splitters[index].DesiredSize.Width;
break;
case Dock.Bottom:
container.Arrange(
new Rect(
final.X,
final.Bottom - container.DesiredSize.Height,
final.Width,
container.DesiredSize.Height));
splitters[index].Arrange(
new Rect(
final.X,
final.Bottom - container.DesiredSize.Height - splitters[index].DesiredSize.Height,
final.Width,
splitters[index].DesiredSize.Height));
final.Height -= container.DesiredSize.Height + splitters[index].DesiredSize.Height;
break;
}
// Handle next splitter
index++;
}
Child?.Arrange(final);
// Update client bounds (needed for splitter preview)
ClientBounds = final;
// The size isn't changed
return(finalSize);
}
public DockHierarchyPresenter(DockCanvas parent)
{
splitters = new List <ResizeControlSplitter>();
this.parent = parent ?? throw new ArgumentNullException(nameof(parent));
}
protected override Size MeasureOverride(Size availableSize)
{
// This is the size that is taken by the split containers
Size size = new Size(0.0, 0.0);
if (splittersInvalid)
{
RecreateSplitters();
}
int index = 0;
// Iterate through all split containers
foreach (SplitContainer container in parent.SplitContainers)
{
// Get the dock side
Dock dockSide = DockCanvas.GetDock(container);
// Calculate the available size first and measure the container
Size available = new Size(
Math.Max(availableSize.Width - size.Width, 0.0),
Math.Max(availableSize.Height - size.Height, 0.0)
);
container.Measure(available);
double splitterSize = 0.0f;
// Depending on the dock side, we change the size accordingly
switch (dockSide)
{
case Dock.Top:
case Dock.Bottom:
size.Height += splitterSize = container.DesiredSize.Height;
break;
case Dock.Left:
case Dock.Right:
size.Width += splitterSize = container.DesiredSize.Width;
break;
}
available = new Size(
Math.Max(availableSize.Width - size.Width, 0.0),
Math.Max(availableSize.Height - size.Height, 0.0));
splitters[index].Measure(available);
if (splitterSize > 0.0)
{
switch (dockSide)
{
case Dock.Top:
case Dock.Bottom:
size.Height += splitters[index].DesiredSize.Height;
break;
case Dock.Left:
case Dock.Right:
size.Width += splitters[index].DesiredSize.Width;
break;
}
}
index++;
}
Child?.Measure(
new Size(
Math.Max(availableSize.Width - size.Width, 0.0),
Math.Max(availableSize.Height - size.Height, 0.0)));
return(size);
}
public SplitContainerCollection(DockCanvas parent, Visual visualParent)
{
this.parent = parent;
collection = new VisualCollection(visualParent);
}