private void OnCheckButtonDragRect(object sender, ButtonDragRectangleEventArgs e)
{
// Cast incoming reference to the actual check button view
ViewDrawNavCheckButtonStack reorderItem = (ViewDrawNavCheckButtonStack)sender;
e.PreDragOffset = (Navigator.AllowPageReorder && reorderItem.Page.AreFlagsSet(KryptonPageFlags.AllowPageReorder));
Rectangle dragRect = Rectangle.Union(e.DragRect, _viewScrollViewport.ClientRectangle);
dragRect.Inflate(new Size(15, 15));
e.DragRect = dragRect;
}
private void RecreateView()
{
// Remove all the existing layout content except the old root at postiion 0
ViewBase firstChild = _viewLayout[0];
_viewLayout.Clear();
_viewLayout.Add(firstChild);
// Start stacking from the top/left if not explicitly set to be far aligned
RelativePositionAlign alignment = Navigator.Stack.StackAlignment;
Orientation stackOrient = Navigator.Stack.StackOrientation;
ViewDockStyle dockNear = (stackOrient == Orientation.Vertical ? ViewDockStyle.Top : ViewDockStyle.Left);
ViewDockStyle dockFar = (stackOrient == Orientation.Vertical ? ViewDockStyle.Bottom : ViewDockStyle.Right);
bool dockTopLeft = (alignment != RelativePositionAlign.Far);
foreach (KryptonPage page in Navigator.Pages)
{
// Grab the page associated view elements
ViewDrawNavCheckButtonStack checkButton = (ViewDrawNavCheckButtonStack)_pageLookup[page];
ViewDrawBorderEdge buttonEdge = _buttonEdgeLookup[page];
// Add to the child collection with the correct docking style
if (dockTopLeft)
{
_viewLayout.Insert(1, checkButton);
_viewLayout.Insert(1, buttonEdge);
_viewLayout.SetDock(buttonEdge, dockNear);
_viewLayout.SetDock(checkButton, dockNear);
}
else
{
_viewLayout.Add(buttonEdge, dockFar);
_viewLayout.Add(checkButton, dockFar);
}
// All entries after the selected page are docked at the bottom/right unless
// we have been set to stack near or far, in which case we do not change.
if (checkButton.Checked && (alignment == RelativePositionAlign.Center))
{
dockTopLeft = false;
}
}
}
private void OnPageInserted(object sender, TypedCollectionEventArgs <KryptonPage> e)
{
if (!Navigator.IsDisposed && _events)
{
// Create the draw view element for the check button and provide page it represents
ViewDrawNavCheckButtonStack checkButton = new ViewDrawNavCheckButtonStack(Navigator, e.Item, ResolveButtonOrientation());
// Provide the drag rectangle when requested for this button
checkButton.ButtonDragRectangle += OnCheckButtonDragRect;
checkButton.ButtonDragOffset += OnCheckButtonDragOffset;
// Need to know when check button needs repainting
checkButton.NeedPaint = NeedPaintDelegate;
// Set the initial state
checkButton.Visible = e.Item.LastVisibleSet;
checkButton.Enabled = e.Item.Enabled;
checkButton.Checked = (Navigator.SelectedPage == e.Item);
// Find the border edge palette to use
PaletteBorderEdge buttonEdgePalette = (Navigator.Enabled ? Navigator.StateNormal.BorderEdge :
Navigator.StateDisabled.BorderEdge);
// Create the border edge for use next to the check button
ViewDrawBorderEdge buttonEdge = new ViewDrawBorderEdge(buttonEdgePalette, Navigator.Stack.StackOrientation)
{
Visible = e.Item.LastVisibleSet
};
// Add to lookup dictionary
_pageLookup.Add(e.Item, checkButton);
_buttonEdgeLookup.Add(e.Item, buttonEdge);
// Set correct ordering and dock setting
ReorderCheckButtons();
// Need to repaint to show the change
Navigator.PerformNeedPaint(true);
}
}
private void CreateNavCheckButtons()
{
// Maintain lookup between page and check button/button edge that represent it
_pageLookup = new PageToNavCheckButton();
_buttonEdgeLookup = new PageToButtonEdge();
VisualOrientation checkButtonOrient = ResolveButtonOrientation();
RelativePositionAlign alignment = Navigator.Stack.StackAlignment;
Orientation stackOrient = Navigator.Stack.StackOrientation;
Orientation buttonEdgeOrient = (stackOrient == Orientation.Vertical ? Orientation.Horizontal : Orientation.Vertical);
ViewDockStyle dockNear = (stackOrient == Orientation.Vertical ? ViewDockStyle.Top : ViewDockStyle.Left);
ViewDockStyle dockFar = (stackOrient == Orientation.Vertical ? ViewDockStyle.Bottom : ViewDockStyle.Right);
// Cache the border edge palette to use
PaletteBorderEdge buttonEdgePalette = (Navigator.Enabled ? Navigator.StateNormal.BorderEdge :
Navigator.StateDisabled.BorderEdge);
// Start stacking from the top/left if not explicitly set to be far aligned
bool dockTopLeft = (alignment != RelativePositionAlign.Far);
// Create a check button to represent each krypton page
foreach (KryptonPage page in Navigator.Pages)
{
// Create the draw view element for the check button and provide page it represents
ViewDrawNavCheckButtonStack checkButton = new ViewDrawNavCheckButtonStack(Navigator, page, checkButtonOrient);
// Provide the drag rectangle when requested for this button
checkButton.ButtonDragRectangle += OnCheckButtonDragRect;
checkButton.ButtonDragOffset += OnCheckButtonDragOffset;
// Need to know when check button needs repainting
checkButton.NeedPaint = NeedPaintDelegate;
// Set the initial state
checkButton.Visible = page.LastVisibleSet;
checkButton.Enabled = page.Enabled;
checkButton.Checked = (Navigator.SelectedPage == page);
checkButton.Orientation = checkButtonOrient;
// Create the border edge for use next to the check button
ViewDrawBorderEdge buttonEdge = new ViewDrawBorderEdge(buttonEdgePalette, buttonEdgeOrient)
{
Visible = page.LastVisibleSet
};
// Add to lookup dictionary
_pageLookup.Add(page, checkButton);
_buttonEdgeLookup.Add(page, buttonEdge);
// Add to the child collection with the correct docking style
if (dockTopLeft)
{
_viewLayout.Insert(1, checkButton);
_viewLayout.Insert(1, buttonEdge);
_viewLayout.SetDock(buttonEdge, dockNear);
_viewLayout.SetDock(checkButton, dockNear);
}
else
{
_viewLayout.Add(buttonEdge, dockFar);
_viewLayout.Add(checkButton, dockFar);
}
// All entries after the selected page are docked at the bottom/right unless
// we have been set to stack near or far, in which case we do not change.
if (checkButton.Checked && (alignment == RelativePositionAlign.Center))
{
dockTopLeft = false;
}
}
// Need to monitor changes in the page collection to reflect in layout bar
Navigator.Pages.Inserted += OnPageInserted;
Navigator.Pages.Removed += OnPageRemoved;
Navigator.Pages.Cleared += OnPagesCleared;
_events = true;
}
private void OnCheckButtonDragOffset(object sender, ButtonDragOffsetEventArgs e)
{
// Cast incoming reference to the actual check button view
ViewDrawNavCheckButtonStack reorderView = (ViewDrawNavCheckButtonStack)sender;
// Scan the collection of children
bool foundReorderView = false;
Orientation stackOrient = Navigator.Stack.StackOrientation;
foreach (KryptonPage page in Navigator.Pages)
{
// If the mouse is over this button
ViewDrawNavCheckButtonStack childView = (ViewDrawNavCheckButtonStack)_pageLookup[page];
if (childView.ClientRectangle.Contains(e.PointOffset))
{
// Only interested if mouse over a different check button
if (childView != reorderView)
{
Rectangle childRect = childView.ClientRectangle;
if (foundReorderView)
{
if (stackOrient == Orientation.Vertical)
{
int shrink = childRect.Height - Math.Min(childRect.Height, reorderView.ClientHeight);
childRect.Y += shrink;
childRect.Height -= shrink;
}
else
{
int shrink = childRect.Width - Math.Min(childRect.Width, reorderView.ClientWidth);
childRect.X += shrink;
childRect.Width -= shrink;
}
// Ensure that when we are placed in the 'after' position the mouse is still over
// ourself as the moved button. Otherwise we just end up toggling back and forth.
if (childRect.Contains(e.PointOffset))
{
KryptonPage movePage = PageFromView(reorderView);
KryptonPage targetPage = PageFromView(childView);
PageReorderEventArgs reorder = new PageReorderEventArgs(movePage, targetPage, false);
// Give event handlers a chance to cancel this reorder
Navigator.OnBeforePageReorder(reorder);
if (!reorder.Cancel)
{
Navigator.Pages.MoveAfter(movePage, PageFromView(childView));
RecreateView();
Navigator.PerformLayout();
Navigator.Refresh();
Navigator.OnTabMoved(new TabMovedEventArgs(movePage, Navigator.Pages.IndexOf(movePage)));
}
}
}
else
{
if (stackOrient == Orientation.Vertical)
{
childRect.Height = Math.Min(childRect.Height, reorderView.ClientHeight);
}
else
{
childRect.Width = Math.Min(childRect.Width, reorderView.ClientWidth);
}
// Ensure that when we are placed in the 'before' position the mouse is still over
// ourself as the moved button. Otherwise we just end up toggling back and forth.
if (childRect.Contains(e.PointOffset))
{
KryptonPage movePage = PageFromView(reorderView);
KryptonPage targetPage = PageFromView(childView);
PageReorderEventArgs reorder = new PageReorderEventArgs(movePage, targetPage, true);
// Give event handlers a chance to cancel this reorder
Navigator.OnBeforePageReorder(reorder);
if (!reorder.Cancel)
{
Navigator.Pages.MoveBefore(movePage, PageFromView(childView));
RecreateView();
Navigator.PerformLayout();
Navigator.Refresh();
Navigator.OnTabMoved(new TabMovedEventArgs(movePage, Navigator.Pages.IndexOf(movePage)));
}
}
}
break;
}
}
foundReorderView = (childView == reorderView);
}
}