/// <summary>
/// Draws the formatted string on a given graphics, clipping the text by the
/// ClipBounds set on the Graphics.
/// </summary>
/// <param graphics device context to draw the string in.</param>
/// <param name="rect">The rectangle where the string is drawn.</param>
/// <exception cref="ArgumentNullException"><i>g</i> is null</exception>
public void DrawClipped(Graphics graphics, Rectangle rect)
{
RectangleF rcClip = graphics.ClipBounds;
IntPtr hdc = graphics.GetHdc();
try
{
IntPtr clipRgn = Win32Declarations.CreateRectRgn(0, 0, 0, 0);
if (Win32Declarations.GetClipRgn(hdc, clipRgn) != 1)
{
Win32Declarations.DeleteObject(clipRgn);
clipRgn = IntPtr.Zero;
}
Win32Declarations.IntersectClipRect(hdc, (int)rcClip.Left, (int)rcClip.Top,
(int)rcClip.Right, (int)rcClip.Bottom);
Draw(hdc, rect);
Win32Declarations.SelectClipRgn(hdc, clipRgn);
Win32Declarations.DeleteObject(clipRgn);
}
finally
{
graphics.ReleaseHdc(hdc);
}
}
private static void DrawSingleIcon(RowState state, Graphics g, int index,
Rectangle rcCol, int midPointX, int midPointY)
{
if (index >= Core.ResourceIconManager.ImageList.Images.Count)
{
// possible on shutdown (OM-8972)
return;
}
RectangleF rcClip = g.ClipBounds;
rcClip.Intersect(new RectangleF(rcCol.Left, rcCol.Top, rcCol.Width, rcCol.Height));
IntPtr hdc = g.GetHdc();
try
{
IntPtr clipRgn = Win32Declarations.CreateRectRgn(0, 0, 0, 0);
if (Win32Declarations.GetClipRgn(hdc, clipRgn) != 1)
{
Win32Declarations.DeleteObject(clipRgn);
clipRgn = IntPtr.Zero;
}
Win32Declarations.IntersectClipRect(hdc, (int)rcClip.Left, (int)rcClip.Top,
(int)rcClip.Right, (int)rcClip.Bottom);
int ildState = ((state & RowState.ActiveSelected) != 0)
? Win32Declarations.ILD_SELECTED
: Win32Declarations.ILD_NORMAL;
Win32Declarations.ImageList_Draw(Core.ResourceIconManager.ImageList.Handle,
index, hdc, midPointX - 8, midPointY - 8, ildState);
Win32Declarations.SelectClipRgn(hdc, clipRgn);
Win32Declarations.DeleteObject(clipRgn);
}
finally
{
g.ReleaseHdc(hdc);
}
}
protected override void DrawItem(Graphics g, Rectangle rc, object item, RowState state, string highlightText)
{
IResource res = item as IResource;
if (res != null && res.GetLinksTo(null, TasksPlugin._linkTarget).Count > 0)
{
int midPointX = rc.Left + Width / 2;
int midPointY = (rc.Top + rc.Bottom) / 2;
RectangleF rcClip = g.ClipBounds;
rcClip.Intersect(new RectangleF(rc.Left, rc.Top, rc.Width, rc.Height));
IntPtr hdc = g.GetHdc();
try
{
IntPtr clipRgn = Win32Declarations.CreateRectRgn(0, 0, 0, 0);
if (Win32Declarations.GetClipRgn(hdc, clipRgn) != 1)
{
Win32Declarations.DeleteObject(clipRgn);
clipRgn = IntPtr.Zero;
}
Win32Declarations.IntersectClipRect(hdc, (int)rcClip.Left, (int)rcClip.Top,
(int)rcClip.Right, (int)rcClip.Bottom);
int ildState = ((state & RowState.ActiveSelected) != 0)
? Win32Declarations.ILD_SELECTED : Win32Declarations.ILD_NORMAL;
Win32Declarations.ImageList_Draw(TasksPlugin._ImageList.Handle, 0, hdc,
midPointX - 8, midPointY - 8, ildState);
Win32Declarations.SelectClipRgn(hdc, clipRgn);
Win32Declarations.DeleteObject(clipRgn);
}
finally
{
g.ReleaseHdc(hdc);
}
}
}
public int DrawText(Graphics g, string text, Font font, Color color, Rectangle rc, StringFormat format)
{
int height;
RectangleF rcClip = g.ClipBounds;
RECT rect = new RECT(rc.Left, rc.Top, rc.Right, rc.Bottom);
IntPtr hdc = g.GetHdc();
try
{
IntPtr clipRgn = Win32Declarations.CreateRectRgn(0, 0, 0, 0);
if (Win32Declarations.GetClipRgn(hdc, clipRgn) != 1)
{
Win32Declarations.DeleteObject(clipRgn);
clipRgn = IntPtr.Zero;
}
Win32Declarations.IntersectClipRect(hdc, (int)rcClip.Left, (int)rcClip.Top, (int)rcClip.Right, (int)rcClip.Bottom);
IntPtr hFont = _fontCache.GetHFont(font);
IntPtr oldFont = Win32Declarations.SelectObject(hdc, hFont);
int textColor = Win32Declarations.ColorToRGB(color);
int oldColor = Win32Declarations.SetTextColor(hdc, textColor);
BackgroundMode oldMode = Win32Declarations.SetBkMode(hdc, BackgroundMode.TRANSPARENT);
DrawTextFormatFlags flags = 0;
if ((format.FormatFlags & StringFormatFlags.NoWrap) != 0)
{
flags |= DrawTextFormatFlags.DT_SINGLELINE;
}
else
{
flags |= DrawTextFormatFlags.DT_WORDBREAK;
}
if (format.Alignment == StringAlignment.Center)
{
flags |= DrawTextFormatFlags.DT_CENTER;
}
else if (format.Alignment == StringAlignment.Far)
{
flags |= DrawTextFormatFlags.DT_RIGHT;
}
if (format.LineAlignment == StringAlignment.Center)
{
flags |= DrawTextFormatFlags.DT_VCENTER;
}
if (format.Trimming == StringTrimming.EllipsisCharacter)
{
flags |= DrawTextFormatFlags.DT_END_ELLIPSIS;
}
if (format.HotkeyPrefix == HotkeyPrefix.None)
{
flags |= DrawTextFormatFlags.DT_NOPREFIX;
}
height = Win32Declarations.DrawText(hdc, text, text.Length, ref rect, flags);
Win32Declarations.SelectClipRgn(hdc, clipRgn);
Win32Declarations.DeleteObject(clipRgn);
Win32Declarations.SetBkMode(hdc, oldMode);
Win32Declarations.SetTextColor(hdc, oldColor);
Win32Declarations.SelectObject(hdc, oldFont);
}
finally
{
g.ReleaseHdc(hdc);
}
return(height);
}
