public XResource()
{
TextFormats = new TextFormatManager(DWriteFactory);
Bitmaps = new BitmapManager(WICFactory);
TextLayouts = new TextLayoutManager(DWriteFactory, TextFormats);
}
public void DrawString(String s, Font font, Brush brush,
RectangleF layoutRectangle, StringFormat format)
{
// bail out now if there's nothing to draw
if((brush is SolidBrush) && ((SolidBrush)brush).Color.A == 0)
{
return;
}
// bail out now if there's nothing to draw
if(((Object)s) == null || s.Length == 0) { return; }
// make a little inset around the text dependent of the font size
layoutRectangle.Inflate((int)(-font.SizeInPoints*DpiX/369.7184), 0);
// convert the layout into device coordinates
Point[] rect = ConvertRectangle
((layoutRectangle.X + baseWindow.X),
(layoutRectangle.Y + baseWindow.Y),
(layoutRectangle.Width - 1),
(layoutRectangle.Height - 1),
pageUnit);
// create a layout rectangle from the device coordinates
Rectangle deviceLayout = new Rectangle
(rect[0].X, rect[0].Y,
(rect[1].X - rect[0].X + 1),
(rect[2].Y - rect[0].Y + 1));
// bail out now if there's nothing to draw
if(clip != null &&
!deviceClipExtent.IntersectsWith(deviceLayout))
{
return;
}
// ensure we have a text layout manager
if(textLayoutManager == null)
{
textLayoutManager = new TextLayoutManager();
}
// set the default temporary clip
Region clipTemp = null;
// draw the text
lock(this)
{
// get the clipping region, if needed
if(format == null ||
((format.FormatFlags & StringFormatFlags.NoClip) == 0))
{
// get the clipping region, if there is one
if(clip != null)
{
// get a copy of the current clipping region
clipTemp = clip.Clone();
// interset the clipping region with the layout
SetClip(layoutRectangle, CombineMode.Intersect);
}
}
// attempt to draw the text
try
{
// Workaround for calculation new font size, if a transformation is set
// this does only work for scaling, not for rotation or multiply transformations
// draw the text
textLayoutManager.Draw
(this, s, this.TransformFont(font), deviceLayout, format, brush);
}
finally
{
// reset the clip
if(clipTemp != null) { Clip = clipTemp; }
}
}
}
