protected virtual void OnRenderItemImage(ToolStripItemImageRenderEventArgs e)
{
bool need_dispose = false;
Image i = e.Image;
if (e.Item.RightToLeft == RightToLeft.Yes && e.Item.RightToLeftAutoMirrorImage == true)
{
i = CreateMirrorImage(i);
need_dispose = true;
}
if (e.Item.ImageTransparentColor != Color.Empty)
{
ImageAttributes ia = new ImageAttributes();
ia.SetColorKey(e.Item.ImageTransparentColor, e.Item.ImageTransparentColor);
e.Graphics.DrawImage(i, e.ImageRectangle, 0, 0, i.Width, i.Height, GraphicsUnit.Pixel, ia);
ia.Dispose();
}
else
{
e.Graphics.DrawImage(i, e.ImageRectangle);
}
if (need_dispose)
{
i.Dispose();
}
ToolStripItemImageRenderEventHandler eh = (ToolStripItemImageRenderEventHandler)Events [RenderItemImageEvent];
if (eh != null)
{
eh(this, e);
}
}
protected virtual void OnRenderItemCheck(ToolStripItemImageRenderEventArgs e)
{
ToolStripItemImageRenderEventHandler eh = (ToolStripItemImageRenderEventHandler)Events [RenderItemCheckEvent];
if (eh != null)
{
eh(this, e);
}
}
/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// toolstripitemimagerendereventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this ToolStripItemImageRenderEventHandler toolstripitemimagerendereventhandler, Object sender, ToolStripItemImageRenderEventArgs e, AsyncCallback callback)
{
if (toolstripitemimagerendereventhandler == null)
{
throw new ArgumentNullException("toolstripitemimagerendereventhandler");
}
return(toolstripitemimagerendereventhandler.BeginInvoke(sender, e, callback, null));
}
public void DrawItemImage(ToolStripItemImageRenderEventArgs e)
{
this.OnRenderItemImage(e);
ToolStripItemImageRenderEventHandler handler = this.Events[EventRenderItemImage] as ToolStripItemImageRenderEventHandler;
if (handler != null)
{
handler(this, e);
}
}
/// <include file='doc\WinBarRenderer.uex' path='docs/doc[@for="ToolStripRenderer.DrawItemCheck"]/*' />
/// <devdoc>
/// Draw image
/// </devdoc>
public void DrawItemCheck(ToolStripItemImageRenderEventArgs e)
{
OnRenderItemCheck(e);
ToolStripItemImageRenderEventHandler eh = Events[EventRenderItemCheck] as ToolStripItemImageRenderEventHandler;
if (eh != null)
{
eh(this, e);
}
}
public void ToolStripRenderer_DrawItemImage_Invoke_CallsRenderItemImage(Graphics graphics, ToolStripItem item, Image image, Rectangle imageRectangle)
{
var eventArgs = new ToolStripItemImageRenderEventArgs(graphics, item, image, imageRectangle);
var renderer = new SubToolStripRenderer();
int callCount = 0;
ToolStripItemImageRenderEventHandler handler = (sender, e) =>
{
Assert.Same(renderer, sender);
Assert.Same(eventArgs, e);
callCount++;
};
// Call with handler.
renderer.RenderItemImage += handler;
renderer.DrawItemImage(eventArgs);
Assert.Equal(1, callCount);
// Remove handler.
renderer.RenderItemImage -= handler;
renderer.DrawItemImage(eventArgs);
Assert.Equal(1, callCount);
}
