private bool CheckDockLocation(MultiSplitContainer container)
{
var horizontal = container.Horizontal;
var absoluteBounds = container.Parent.RectangleToScreen(container.Bounds);
if (!absoluteBounds.Contains(Cursor.Position)) return false;
foreach (var panel in container.Panels)
{
if (CheckGroupDock(panel.ControlContainer.Controls[0] as IdePanel)) return true;
}
var splits = new List<LayoutSplit>();
var splitIndex = 0;
var closestSplit = new LayoutSplit
{
Location = horizontal ? absoluteBounds.Left : absoluteBounds.Top,
Index = splitIndex,
Parent = container,
Horizontal = horizontal
};
foreach (var split in container.Splits)
splits.Add(new LayoutSplit
{
Location = closestSplit.Location + split,
Index = ++splitIndex,
Parent = container,
Horizontal = horizontal
});
SuggestClosestSplit(closestSplit, splits, absoluteBounds, horizontal);
return true;
}
private void SuggestClosestSplit(LayoutSplit closestSplit, List<LayoutSplit> splits, Rectangle absoluteBounds, bool horizontal)
{
var cursorIndex = (horizontal ? Cursor.Position.X : Cursor.Position.Y);
var closestSplitDistance = Math.Abs(cursorIndex - closestSplit.Location);
foreach (var split in splits)
{
var distance = Math.Abs(cursorIndex - split.Location);
if (distance < closestSplitDistance)
{
closestSplitDistance = distance;
closestSplit = split;
}
}
Rectangle suggestion;
if (horizontal)
{
var targetWidth = absoluteBounds.Width / (splits.Count + 1);
suggestion = new Rectangle(closestSplit.Location - (targetWidth / 2), absoluteBounds.Top, targetWidth, absoluteBounds.Height);
var oversized = suggestion.Right - absoluteBounds.Right;
if (oversized > 0) suggestion.X -= oversized;
oversized = absoluteBounds.Left - suggestion.Left;
if (oversized > 0) suggestion.X += oversized;
}
else
{
var targetHeight = absoluteBounds.Height / (splits.Count + 1);
suggestion = new Rectangle(absoluteBounds.Left, closestSplit.Location - (targetHeight / 2), absoluteBounds.Width, targetHeight);
var oversized = suggestion.Bottom - absoluteBounds.Bottom;
if (oversized > 0) suggestion.Y -= oversized;
oversized = absoluteBounds.Top - suggestion.Top;
if (oversized > 0) suggestion.Y += oversized;
}
if (DockSuggestion == null || suggestion != DockSuggestion.Bounds)
{
DockSuggestion = new DockSuggestion
{
Bounds = suggestion,
LayoutSplit = closestSplit
};
}
}