public override void OnDraw(Graphics g, Rectangle drawBounds, RECT rcBounds, RECT rcUpdate, int lDrawFlags, IntPtr hdc, IntPtr pvDrawObject)
{
IHTMLElement2 element2 = HTMLElement as IHTMLElement2;
//g.DrawRectangle(new Pen(Color.Red, 1), GetPaintRectangle(GetClientRectangle(ELEMENT_REGION.CONTENT), rcBounds));
//g.DrawRectangle(new Pen(Color.Orange, 1), GetPaintRectangle(GetClientRectangle(ELEMENT_REGION.BORDER), rcBounds));
//g.DrawRectangle(new Pen(Color.Blue, 1), GetPaintRectangle(GetClientRectangle(ELEMENT_REGION.PADDING), rcBounds));
//g.DrawRectangle(new Pen(Color.Gold, 1), GetPaintRectangle(GetClientRectangle(ELEMENT_REGION.MARGIN), rcBounds));
//highlight the line that the caret is currently placed on.
//Rectangle lineRect = GetPaintRectangle(GetLineClientRectangle(EditorContext.SelectedMarkupRange.Start), rcBounds);
//g.DrawRectangle(new Pen(Color.Violet, 1), lineRect);
}
private const int BORDER_MARGIN_Y = 3; //padding for the border drawn around the region.
public override void OnDraw(Graphics g, Rectangle drawBounds, RECT rcBounds, RECT rcUpdate, int lDrawFlags, IntPtr hdc, IntPtr pvDrawObject)
{
base.OnDraw(g, drawBounds, rcBounds, rcUpdate, lDrawFlags, hdc, pvDrawObject);
if (RegionBorderVisible)
{
//Create region around content region of the element, and add a little padding
Rectangle bounds = GetPaintRectangle(GetClientRectangle(ELEMENT_REGION.CONTENT), rcBounds);
int heightPadding = BORDER_MARGIN_Y;
int widthPadding = BORDER_MARGIN_X;
bounds.X -= widthPadding;
bounds.Y -= heightPadding;
bounds.Width += widthPadding * 2;
bounds.Height += heightPadding * 2;
Rectangle borderRectangle = bounds;
ControlHelper.DrawRoundedRectangle(g, Pens.Gray, borderRectangle, 2);
}
}
/// <summary>
/// Convert a .NET rectangle structure into a Win32 RECT structure
/// </summary>
/// <param name="rect">rect to convert</param>
/// <returns>converted rect</returns>
public static RECT Convert(Rectangle rect)
{
RECT newRect = new RECT();
newRect.left = rect.Left;
newRect.top = rect.Top;
newRect.right = rect.Right;
newRect.bottom = rect.Bottom;
return newRect;
}
/// <summary>
/// Convert a Win32 RECT structure into a .NET rectangle
/// </summary>
/// <param name="rect"></param>
/// <returns></returns>
public static Rectangle Convert(RECT rect)
{
return new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
}
public static extern bool InvalidateRect(
IntPtr hWnd, // handle to window
ref RECT lpRect, // rectangle coordinates
//IntPtr lpRect,
bool bErase // erase state
);
public static extern uint GetBoundsRect(IntPtr hdc, out RECT lprcBounds, uint flags);
public static extern int DrawTextEx(IntPtr hdc, StringBuilder lpchText, int cchText,
ref RECT lprc, DT dwDTFormat, ref DRAWTEXTPARAMS lpDTParams);
public static extern Boolean GetWindowRect(IntPtr hWnd, ref RECT lpRect);
public static extern Int32 DrawThemeBackground(IntPtr hTheme,
IntPtr hdc,
Int32 iPartId,
Int32 iStateId,
ref RECT pRect,
ref RECT pClipRect);
/// <summary>
/// IHTMLPainter.Draw -- Called by MSHTML to render a behavior in the browser's client area
/// </summary>
/// <param name="rcBounds">RECT that specifies the bounds of the element to which the behavior is attached</param>
/// <param name="rcUpdate">RECT that specifies a bounding rectangle for the region that needs to be redrawn</param>
/// <param name="lDrawFlags">HTML_PAINT_DRAW_FLAGS enumeration that specifies options to use while drawing</param>
/// <param name="hdc">HDC that specifies a Microsoft® Windows® Graphics Device Interface (GDI) device context for the behavior to use while drawing</param>
/// <param name="pvDrawObject">Pointer to a drawing object, such as a Microsoft DirectDraw® surface, for the behavior to use while drawing</param>
public virtual void Draw(RECT rcBounds, RECT rcUpdate, int lDrawFlags, IntPtr hdc, IntPtr pvDrawObject)
{
}
public virtual void ResizeBorder(ref RECT prcBorder, IOleInPlaceUIWindow pUIWindow, bool frameWindow)
{
}