public void Update()
{
if ((!this._windowManager.IsCompositionEnabled) || (this._handle == IntPtr.Zero))
{
return;
}
try
{
DwmApiNativeMethods.DwmUpdateThumbnailProperties(this._handle, this._properties);
}
catch (ArgumentException)
{
//This exception will be thrown if the EVE client disappears while this method is running
}
}
public void Refresh(bool forceRefresh)
{
// To prevent flickering the old broken thumbnail is removed AFTER the new shiny one is created
IntPtr obsoleteThumbnailHanlde = forceRefresh ? this._thumbnailHandle : IntPtr.Zero;
if ((this._isThumbnailSetUp == false) || forceRefresh)
{
this.RegisterThumbnail();
}
bool sizeChanged = this._isSizeChanged || forceRefresh;
bool locationChanged = this._isPositionChanged || forceRefresh;
if (sizeChanged)
{
this._thumbnail.rcDestination = new RECT(0, 0, this.ClientSize.Width, this.ClientSize.Height);
try
{
DwmApiNativeMethods.DwmUpdateThumbnailProperties(this._thumbnailHandle, this._thumbnail);
}
catch (ArgumentException)
{
//This exception will be thrown if the EVE client disappears while this method is running
}
this._isSizeChanged = false;
}
if (obsoleteThumbnailHanlde != IntPtr.Zero)
{
this.UnregisterThumbnail(obsoleteThumbnailHanlde);
}
if (!this.IsOverlayEnabled)
{
if (this._isOverlayVisible)
{
this._overlay.Hide();
this._isOverlayVisible = false;
}
return;
}
if (!this._isOverlayVisible)
{
this._overlay.Show();
this._isOverlayVisible = true;
}
else if (!(sizeChanged || locationChanged))
{
// No need to adjust in the overlay location if it is already visible and properly set
return;
}
Size overlaySize = this.ClientSize;
overlaySize.Width -= 2 * 5;
overlaySize.Height -= 2 * 5;
Point overlayLocation = this.Location;
overlayLocation.X += 5 + (this.Size.Width - this.ClientSize.Width) / 2;
overlayLocation.Y += 5 + (this.Size.Height - this.ClientSize.Height) - (this.Size.Width - this.ClientSize.Width) / 2;
this._isPositionChanged = false;
this._overlay.Size = overlaySize;
this._overlay.Location = overlayLocation;
}