public static void SetRoundedRegion(Form form, Size overrideSize)
{
int width, height;
if (overrideSize == Size.Empty)
{
width = form.ClientSize.Width;
height = form.ClientSize.Height;
}
else
{
width = overrideSize.Width;
height = overrideSize.Height;
}
Region r = new Region(new Rectangle(3, 0, width - 6, height));
r.Union(new Rectangle(2, 1, width - 4, height - 2));
r.Union(new Rectangle(1, 2, width - 2, height - 4));
r.Union(new Rectangle(0, 3, width, height - 6));
RECT rect = new RECT();
User32.GetWindowRect(form.Handle, ref rect);
Point windowScreenPos = RectangleHelper.Convert(rect).Location;
Point clientScreenPos = form.PointToScreen(new Point(0, 0));
r.Translate(clientScreenPos.X - windowScreenPos.X, clientScreenPos.Y - windowScreenPos.Y);
form.Region = r;
}
public override void Draw(RECT rcBounds, RECT rcUpdate, int lDrawFlags, IntPtr hdc, IntPtr pvDrawObject)
{
drawDepth++;
try
{
if (drawDepth > 1)
{
return;
}
_HTML_PAINTER_INFO pInfo = new _HTML_PAINTER_INFO();
GetPainterInfo(ref pInfo);
//adjust the draw bounds to remove our padding for invalidates
Rectangle drawBounds = RectangleHelper.Convert(rcBounds);
drawBounds.X += invalidationPadding;
drawBounds.Y += invalidationPadding;
drawBounds.Height -= invalidationPadding * 2;
drawBounds.Width -= invalidationPadding * 2;
using (Graphics g = Graphics.FromHdc(hdc))
{
OnDraw(g, drawBounds, rcBounds, rcUpdate, lDrawFlags, hdc, pvDrawObject);
}
}
finally
{
drawDepth--;
}
}
private bool IsMouseInFrame()
{
RECT rect = new RECT();
User32.GetWindowRect(_form.Handle, ref rect);
Rectangle windowRect = RectangleHelper.Convert(rect);
return
(windowRect.Contains(Control.MousePosition) &&
!_form.ClientRectangle.Contains(_form.PointToClient(Control.MousePosition)));
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
// fix up layout
using (new AutoGrow(this, AnchorStyles.Bottom, false))
{
LayoutHelper.NaturalizeHeight(checkBoxViewPost);
}
// position form
RECT parentRect = new RECT();
User32.GetWindowRect(_parentFrame.Handle, ref parentRect);
Rectangle parentBounds = RectangleHelper.Convert(parentRect);
Location = new Point(parentBounds.Left + ((parentBounds.Width - Width) / 2), parentBounds.Top + (int)(1.5 * Height));
}
/// <summary>
/// Invalidate a rectangular area of the rectangle
/// </summary>
/// <param name="rect"></param>
public void Invalidate(Rectangle rect)
{
try
{
if (_htmlPaintSite == null)
{
return; //avoid exceptions that may occur if invalidates are triggered during initialization
}
RECT invalidRect = RectangleHelper.Convert(rect);
_htmlPaintSite.InvalidateRect(ref invalidRect);
}
catch (Exception)
{
//TODO: An exception gets thrown here when dragging or deleting images
//and causes the image behavior to completely break. Is this exception OK to ignore, or
//is there some protection logic we can put here?
//Debug.Fail("An exception occurred during invalidate", e.ToString());
}
}
private static void CenterForm(IWin32Window hRelativeToWnd, Form form)
{
// if the owning form is not visible then center on the desktop
if (!User32.IsWindowVisible(hRelativeToWnd.Handle))
{
hRelativeToWnd = Win32WindowImpl.DesktopWin32Window;
}
// get the coordinates of the relativeToWnd
RECT rect = new RECT();
User32.GetWindowRect(hRelativeToWnd.Handle, ref rect);
Rectangle centerOnRect = RectangleHelper.Convert(rect);
// determine the center point
Point centerPoint = new Point(centerOnRect.Left + (centerOnRect.Width / 2), centerOnRect.Top + (centerOnRect.Height / 2));
// center the form on that point
form.Location = new Point(centerPoint.X - (form.Width / 2), centerPoint.Y - (form.Height / 2));
}
