public DragDropTabVisual(TabItem tab)
: this()
{
Bitmap buffer = new Bitmap(tab.Width, tab.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
tab.DrawToBitmap(buffer, new Rectangle(0, 0, tab.Width, tab.Height));
pictureBox1.Image = buffer;
}
public void Insert(int index, TabItem tab)
{
innerList.Insert(index, tab);
owner.ItemListChanged(tab, false);
}
public void ItemListChanged(TabItem[] items, bool remove)
{
// remove from control list
foreach(TabItem tabItem in items) {
if(remove) {
this.Controls.Remove(tabItem);
}
else {
if(Controls.Contains(tabItem) == false) {
this.Controls.Add(tabItem);
}
}
}
LayoutTabs();
}
public void Remove(TabItem tab)
{
innerList.Remove(tab);
}
public int IndexOf(TabItem tab)
{
return innerList.IndexOf(tab);
}
public void Add(string tabText, Image image)
{
TabItem tab = new TabItem();
tab.TabText = tabText;
tab.Image = image;
Add(tab);
}
public TabItemResizeGlyph(BehaviorService behaviorSvc, Control control, Adorner glyphAdorner,
ISelectionService selectionService, IComponentChangeService changeService)
: base(new TabItemResizeBehavior(control as TabItem))
{
service = behaviorSvc;
tab = control as TabItem;
adorner = glyphAdorner;
this.selectionService = selectionService;
this.changeService = changeService;
// add events
selectionService.SelectionChanged += OnSelectionChanged;
changeService.ComponentChanged += OnComponentChanged;
}
public override void Initialize(IComponent component)
{
base.Initialize(component);
tabItem = component as TabItem;
InitializeServices();
// initialize adorners
adorner = new Adorner();
//BehaviorService.Adorners.Clear();
BehaviorService.Adorners.Add(adorner);
AutoResizeHandles = true;
// add glyphs
selectionGlyph = new TabItemResizeGlyph(BehaviorService, tabItem,
adorner, selectionService, changeService);
adorner.Glyphs.Add(selectionGlyph);
}
private int GetReorderInsertLocation(TabItem tab, Point mousePosition)
{
Point location = MousePositionToHost(tab, mousePosition);
// constrain the location in the bounds of the host
location = ConstrainPositionToHost(location);
TabItem hoveredTab = this.GetChildAtPoint(location) as TabItem;
if(hoveredTab != null) {
return tabs.IndexOf(hoveredTab);
}
return -1; // no tab found under cursor
}
private InsertDirection GetInsertDirection(TabItem tab, Point mousePosition, int insertIndex)
{
Point location = MousePositionToHost(tab, mousePosition);
int tabIndex = tabs.IndexOf(tab);
// check the type of insertion
if(insertIndex == tabIndex || insertIndex == -1) {
// invalid insertion type
return InsertDirection.None;
}
else {
TabItem targetTab = tabs[insertIndex];
if((_tabAlignment == TabAlignment.Top) ||
(_tabAlignment == TabAlignment.Bottom)) {
if((location.X - targetTab.Left) <= targetTab.Width / 2) {
// left side of the tab, check if valid
if(insertIndex != tabIndex + 1) {
return InsertDirection.Left;
}
else {
return InsertDirection.None;
}
}
else {
// right side of the tab, check if valid
if(insertIndex != tabIndex - 1) {
return InsertDirection.Rigth;
}
else {
return InsertDirection.None;
}
}
}
else {
if((location.Y - targetTab.Top) <= targetTab.Height / 2) {
// left side of the tab, check if valid
if(insertIndex != tabIndex + 1) {
return InsertDirection.Left;
}
else {
return InsertDirection.None;
}
}
else {
// right side of the tab, check if valid
if(insertIndex != tabIndex - 1) {
return InsertDirection.Rigth;
}
else {
return InsertDirection.None;
}
}
}
}
}
private Color GetCurrentTabBackColor(TabItem tab)
{
if(tab.Selected) {
return tab.SelectedBackColor;
}
else {
return tab.BackColor;
}
}
public void TabUpdateDrag(TabItem tab, Point mousePosition)
{
if(reorderingVisual != null) {
// update the position of the visual
reorderingVisual.Location = GetVisualLocation(tab, mousePosition);
}
// get the index of the tab below the mouse
int insertIndex = GetReorderInsertLocation(tab, mousePosition);
lastInsertIndex = insertIndex == -1 ? lastInsertIndex : insertIndex;
// get the insert direction
lastInsertDirection = GetInsertDirection(tab, mousePosition, lastInsertIndex);
this.Invalidate(); // force the host to draw the insertion marker
}
public void TabStartDrag(TabItem tab, Point mousePosition)
{
reorderingVisual = new DragDropTabVisual(tab);
// set visual location and show it
reorderingVisual.Location = GetVisualLocation(tab, mousePosition);
reorderingVisual.Show();
// refocus the main form
Form parentForm = this.FindForm();
if(parentForm != null) {
parentForm.Activate();
}
// set the tab that is reordered
reorderingTab = tab;
reordering = true;
}
public void TabItemSelected(TabItem item)
{
// deselect all other tabs
for(int i = 0; i < tabs.Count; i++) {
if(tabs[i] != item) {
tabs[i].Selected = false;
}
}
Relayout();
}
public void TabEndDrag(TabItem tab, Point mousePosition)
{
if(reorderingVisual != null) {
// destroy the visual
reorderingVisual.Hide();
reorderingVisual.Dispose();
reorderingVisual = null;
}
// do the reordering
// get the index of the tab below the mouse
int insertIndex = GetReorderInsertLocation(tab, mousePosition);
// get the insert direction
lastInsertDirection = GetInsertDirection(tab, mousePosition, insertIndex);
if(lastInsertDirection != InsertDirection.None) {
if(lastInsertDirection == InsertDirection.Left) {
InsertTabAt(reorderingTab, insertIndex);
}
else {
InsertTabAt(reorderingTab, insertIndex + 1);
}
}
reorderingTab = null;
// remove insertion marker
lastInsertDirection = InsertDirection.None;
this.Invalidate();
reordering = false;
}
public void Remove(TabItem tab)
{
innerList.Remove(tab);
}
public TabItemActionList(IComponent component)
: base(component)
{
tabItem = component as TabItem;
service = GetService(typeof(DesignerActionUIService)) as DesignerActionUIService;
IDesignerHost host = Component.Site.GetService(typeof(IDesignerHost)) as IDesignerHost;
tabItemDesigner = host.GetDesigner(component) as TabItemDesigner;
}
private int GetTabHeight(TabItem item)
{
if(item.Selected) {
return item.SelectedTabHeigth == 0 ? _selectedTabHeight : item.SelectedTabHeigth;
}
else {
return item.TabHeigth == 0 ? _tabHeight : item.TabHeigth;
}
}
public TabItemResizeBehavior(TabItem tab)
{
this.tab = tab;
}
private Point GetVisualLocation(TabItem tab, Point mousePosition)
{
Point location = Point.Empty;
switch(_tabAlignment) {
case TabAlignment.Top: {
location = new Point(KeepInHostWidth(tab.Left + mousePosition.X - tab.Width / 2, tab.Width),
this.Height - tab.Height);
break;
}
case TabAlignment.Bottom: {
location = new Point(KeepInHostWidth(tab.Left + mousePosition.X - tab.Width / 2, tab.Width), 0);
break;
}
case TabAlignment.Left: {
location = new Point(0, KeepInHostHeight(tab.Top + mousePosition.Y - tab.Height / 2, tab.Height));
break;
}
case TabAlignment.Right: {
location = new Point(this.Width - tab.Width,
KeepInHostHeight(tab.Top + mousePosition.Y - tab.Height / 2, tab.Height));
break;
}
}
// return the location in screen coordinates
return this.PointToScreen(location);
}
public void Add(string tabText)
{
TabItem tab = new TabItem();
tab.TabText = tabText;
Add(tab);
}
private void InsertTabAt(TabItem tab, int index)
{
int oldIndex = tabs.IndexOf(tab);
int newIndex = index;
tabs.RemoveAt(oldIndex);
if(newIndex > oldIndex) {
tabs.Insert(index - 1, tab);
}
else {
tabs.Insert(index, tab);
}
// force relayout
Relayout();
}
public bool Contains(TabItem tab)
{
return innerList.Contains(tab);
}
private Point MousePositionToHost(TabItem tab, Point mousePosition)
{
Point location = mousePosition;
if((_tabAlignment == TabAlignment.Top) ||
(_tabAlignment == TabAlignment.Bottom)) {
location = new Point(mousePosition.X + tab.Left,
mousePosition.Y);
}
else {
location = new Point(mousePosition.X,
mousePosition.Y + tab.Top);
}
return location;
}
public void Insert(int index, TabItem tab)
{
innerList.Insert(index, tab);
owner.ItemListChanged(tab, false);
}
public bool Contains(TabItem tab)
{
return(innerList.Contains(tab));
}
public int IndexOf(TabItem tab)
{
return(innerList.IndexOf(tab));
}
public void ItemListChanged(TabItem item, bool remove)
{
if(remove) {
// remove from control list
Controls.Remove(item);
}
else {
item.Owner = this;
// add to control list
if(this.Controls.Contains(item) == false) {
this.Controls.Add(item);
}
this.PerformLayout();
}
LayoutTabs();
}