/// <summary>
/// Helper method to update the thumbnail preview for a given tab page.
/// </summary>
/// <param name="tabPage"></param>
private void UpdatePreviewBitmap(TabPage tabPage)
{
if (tabPage != null)
{
TabbedThumbnail preview = TaskbarManager.Instance.TabbedThumbnail.GetThumbnailPreview(tabPage);
if (preview != null)
{
Bitmap bitmap = TabbedThumbnailScreenCapture.GrabWindowBitmap(tabPage.Handle, tabPage.Size);
preview.SetImage(bitmap);
if (bitmap != null)
{
bitmap.Dispose();
bitmap = null;
}
}
}
}
/// <summary>Generate a new thumbnail image for <paramref name="tab" />.</summary>
/// <param name="tab">Tab that we need to generate a thumbnail for.</param>
protected void UpdateTabThumbnail(TitleBarTab tab)
{
TabbedThumbnail preview = TaskbarManager.Instance.TabbedThumbnail.GetThumbnailPreview(tab.Content);
if (preview == null)
{
return;
}
Bitmap bitmap = TabbedThumbnailScreenCapture.GrabWindowBitmap(tab.Content.Handle, tab.Content.Size);
preview.SetImage(bitmap);
// If we already had a preview image for the tab, dispose of it
if (_previews.ContainsKey(tab.Content) && _previews[tab.Content] != null)
{
_previews[tab.Content].Dispose();
}
_previews[tab.Content] = bitmap;
}
/// <summary>
/// Called from <see cref="TornTabForm" /> when we need to generate a thumbnail for a tab when it is torn out of its parent window. We simply call
/// <see cref="Graphics.CopyFromScreen(System.Drawing.Point,System.Drawing.Point,System.Drawing.Size)" /> to copy the screen contents to a
/// <see cref="Bitmap" />.
/// </summary>
/// <returns>An image of the tab's contents.</returns>
public virtual Bitmap GetImage()
{
return(TabbedThumbnailScreenCapture.GrabWindowBitmap(Content.Handle, Content.Size));
}