protected sealed override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
TabPageCollection tabPages = base.TabPages;
int selectedIndex = base.SelectedIndex;
int tabCount = base.TabCount;
if (tabCount > 0)
{
// Draw the background behind the tabs
Rectangle tabChannel = base.GetTabRect(0);
tabChannel.X = 0;
tabChannel.Width = base.Width;
g.FillRectangle(SystemBrushes.Control, tabChannel);
// Draw each tab
InlineTabRenameTextBox renamingTextBox = myRenamingTextBox;
TabPage renamingTabPage = (renamingTextBox != null) ? renamingTextBox.RenamingTabPage : null;
for (int i = 0; i < tabCount; i++)
{
DrawTab(g, base.GetTabRect(i), tabPages[i], i == selectedIndex, renamingTabPage);
}
}
base.OnPaint(e);
}
private void DrawTab(Graphics g, Rectangle bounds, TabPage tabPage, bool selected, TabPage renamingTabPage)
{
const int diagramImagePadding = 2;
bounds.Inflate(-TabOutsideBorderLength, -TabOutsideBorderLength);
// Draw the background (if selected) and border
if (selected)
{
g.FillRectangle(SystemBrushes.Window, bounds);
g.DrawRectangle(SystemPens.WindowFrame, bounds);
}
else
{
g.DrawRectangle(SystemPens.ControlDark, bounds);
}
bounds.Inflate(-TabInsideBorderLength, -TabInsideBorderLength);
// Draw the image, if any
ImageList imageList = base.ImageList;
if (imageList != null)
{
int imageIndex = imageList.Images.IndexOfKey(tabPage.ImageKey);
if (imageIndex >= 0)
{
int imageY = bounds.Y + ((bounds.Height - DiagramImageHeight) / 2);
imageList.Draw(g, bounds.X, imageY, imageIndex);
bounds.Width -= DiagramImageWidth + diagramImagePadding;
bounds.X += DiagramImageWidth + diagramImagePadding;
}
}
// Draw the text box for renaming or the tab name
if (tabPage == renamingTabPage)
{
InlineTabRenameTextBox renamingTextBox = myRenamingTextBox;
renamingTextBox.Bounds = bounds;
renamingTextBox.Location = bounds.Location;
renamingTextBox.MinimumSize = renamingTextBox.MaximumSize = renamingTextBox.Size = bounds.Size;
if (!renamingTextBox.Visible)
{
renamingTextBox.Visible = true;
renamingTextBox.Focus();
}
renamingTextBox.Invalidate();
}
else
{
const TextFormatFlags textFormatFlags = TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.NoPrefix | TextFormatFlags.NoClipping;
TextRenderer.DrawText(g, tabPage.Name, base.Font, bounds, SystemColors.WindowText, textFormatFlags);
}
}
private void RenameTab(DiagramTabPage tabPage)
{
if (tabPage != null)
{
InlineTabRenameTextBox renamingTextBox = myRenamingTextBox;
if (renamingTextBox != null)
{
if (renamingTextBox.RenamingTabPage == tabPage)
{
// If we already have an InlineTabRenameTextBox for this tab page, do nothing
return;
}
else
{
// If we already have an InlineTabRenameTextBox for a different tab page, save the changes and close it
renamingTextBox.Close(true);
}
}
myRenamingTextBox = new InlineTabRenameTextBox(this, tabPage);
base.Invalidate(false);
}
}
