void XListbox_DrawItem(object sender, DrawItemEventArgs e)
{
bool max_width_updated = false;
if (e.Index < 0)
{
return;
}
//Log.log( "Draw Item " + e.Index + " in " + Name );
GraphicsContainer gc = e.Graphics.BeginContainer();
try
{
object item = this.Items[e.Index];
if (item == null)
{
Log.log("No Item?!");
}
//Log.log( "Item is a " + item.GetType() );
object display_member = item; // default value.
if (this.DisplayMember != null)
{
if (this.DisplayMember == "")
{
// not really a display member..
DataRowView drv = display_member as DataRowView;
if (drv != null)
{
if (drv.Row.RowState == DataRowState.Deleted)
{
display_member = "<Deleted Row>";
}
else if (drv.Row.RowState == DataRowState.Detached)
{
display_member = "<Detached Row>";
}
else
{
display_member = drv.Row;
}
}
else
{
DataRow row = display_member as DataRow;
if (drv != null)
{
display_member = row;
}
}
}
else
{
System.Reflection.PropertyInfo pi = item.GetType().GetProperty(this.DisplayMember);
if (pi != null)
{
display_member = pi.GetValue(item, null);
}
else
{
DataRowView drv = item as DataRowView;
if (drv != null && drv.Row.RowState != DataRowState.Detached && drv.Row.RowState != DataRowState.Deleted)
{
try
{
display_member = drv.Row[DisplayMember];
}
catch (Exception ex)
{
display_member = ex.Message;
}
}
DataRow row = item as DataRow;
if (row != null && row.RowState != DataRowState.Detached && row.RowState != DataRowState.Deleted)
{
try
{
display_member = row[DisplayMember];
}
catch (Exception ex)
{
display_member = ex.Message;
}
}
}
}
}
String output = display_member.ToString();
//String output = this.Items[e.Index].ToString();
//SizeF szf = e.Graphics.MeasureString( output, Font );
if (e.State.HasFlag(DrawItemState.Selected))
{
e.Graphics.FillRectangle(SystemBrushes.Highlight, e.Bounds);
}
else
{
e.Graphics.FillRectangle(new SolidBrush(this.BackColor), e.Bounds);
}
// bounds should be the result of the measure, and the measure should be resulting in real size.
e.Graphics.TranslateTransform(e.Bounds.X - (scale_x * e.Bounds.X)
, e.Bounds.Y - (scale_y * e.Bounds.Y));
e.Graphics.ScaleTransform(scale_x.ToFloat(), scale_y.ToFloat());
Brush textbrush;
if (e.State.HasFlag(DrawItemState.Selected))
{
textbrush = SystemBrushes.HighlightText;
}
else
{
textbrush = new SolidBrush(this.ForeColor);
}
//Log.log( "...Putting String " + output );
//Rectangle actual = Fraction.Scale( e.Bounds, scale_x, scale_y );
if (output.Contains("\t"))
{
int tabstop = 0;
int tabpos = 0;
String segment;
for (segment = output.Substring(0, output.IndexOf("\t")); segment != null;)
{
if (tabstop > 0)
{
if (tab_stops != null && tabstop <= tab_stops.Length)
{
tabpos = tab_stops[tabstop - 1];
}
else
{
tabpos = 96 * tabstop;
}
}
tabstop++;
SizeF szf = FontTracker.MeasureString(e.Graphics, segment, scale_x, scale_y);
FontTracker.DrawString(e.Graphics
, segment
, textbrush
, new Point(e.Bounds.X + tabpos + (int)(szf.Width / 2)
, e.Bounds.Y + (int)(szf.Height / 2))
, scale_x
, scale_y);
/*
* e.Graphics.DrawString( segment
* , Font
* , textbrush
* , e.Bounds.X + tabpos
* , e.Bounds.Y );
*/
output = output.Substring(output.IndexOf('\t') + 1);
if (output.Contains("\t"))
{
segment = output.Substring(0, output.IndexOf('\t'));
}
else
{
segment = null;
}
}
if (tabstop > 0)
{
if (tab_stops != null && tabstop <= tab_stops.Length)
{
tabpos = tab_stops[tabstop - 1];
}
else
{
Log.log("Using default tabstop");
tabpos = 96 * tabstop;
}
}
//Log.log( "... " + output );
{
SizeF szf = FontTracker.MeasureString(e.Graphics, output, scale_x, scale_y);
FontTracker.DrawString(e.Graphics
, output
, textbrush
, new Point(e.Bounds.X + tabpos + (int)(szf.Width / 2)
, e.Bounds.Y + (int)(szf.Height / 2))
, scale_x
, scale_y);
}
/*
* e.Graphics.DrawString( output
* , Font
* , textbrush
* , e.Bounds.X + tabpos
* , e.Bounds.Y );
*/
if (segment == null) // last one to go out
{
SizeF szf = FontTracker.MeasureString(e.Graphics, output, scale_x, scale_y);
if (e.Bounds.X + tabpos + (int)szf.Width > max_width)
{
max_width_updated = true;
max_width = e.Bounds.X + tabpos + (int)szf.Width;
}
}
}
else
{
SizeF szf = FontTracker.MeasureString(e.Graphics, output, scale_x, scale_y);
FontTracker.DrawString(e.Graphics
, output
, textbrush
, new Point(e.Bounds.X + (int)(szf.Width / 2)
, e.Bounds.Y + (int)(szf.Height / 2))
, scale_x
, scale_y);
if (e.Bounds.X + (int)szf.Width > max_width)
{
max_width_updated = true;
max_width = e.Bounds.X + (int)szf.Width;
}
}
if (max_width_updated)
{
//Log.log( "..." + max_width + "..." + scale_x );
//Log.log( "w:" + Width );
max_width = scale_x * max_width;
//Log.log( "...becomes " + max_width );
if (max_width > HorizontalExtent && UpdateExtentTimer == null)
{
//Log.log( "New Timer" );
UpdateExtentTimer = new Timer();
UpdateExtentTimer.Tick += new EventHandler(UpdateExtentTimer_Tick);
UpdateExtentTimer.Interval = 25;
UpdateExtentTimer.Start();
//this.HorizontalScrollbar = true;
//this.HorizontalExtent = max_width + 10;
//Log.log( "Extent change caused immediate redraw" + max_width );
}
}
}
catch (Exception excep)
{
Log.log(excep.Message);
}
e.Graphics.EndContainer(gc);
}
void DrawText(Graphics gout, bool offset_text, int Width, int Height, String outputText)
{
{
int offset = 0;
String realtext = outputText;
List <SizeF> output_size;
List <string> output;
output = new List <string>();
output_size = new List <SizeF>();
int idx;
do
{
int idx_a = realtext.IndexOf('\n', offset);
int idx_b = realtext.IndexOf('_', offset);
if (idx_a >= 0)
{
if (idx_b >= 0)
{
if (idx_a < idx_b)
{
idx = idx_a;
}
else
{
idx = idx_b;
}
}
else
{
idx = idx_a;
}
}
else
{
idx = idx_b;
}
//idx = realtext.IndexOf( '_', offset );
if (idx >= 0)
{
output.Add(realtext.Substring(offset, idx - offset));
offset = idx + 1;
}
else
{
output.Add(realtext.Substring(offset, realtext.Length - offset));
}
} while(idx >= 0);
int height = 0;
int lineheight = 0;
foreach (string s in output)
{
SizeF size;
output_size.Add(size = FontTracker.MeasureString(gout, s, scale_x, scale_y));
//output_size.Add( size = new SizeF( gout.MeasureString( s, c.FontTracker ) ) );
height += (int)((lineheight = (int)size.Height) + (height > 0 ? 0 : 0));
}
Point _point = new Point(Width, Height);
Point point = new Point();
if (!offset_text)
{
//SizeF size = new SizeF(gout.MeasureString(realtext, c.Font));
_point.X /= 2;
_point.Y /= 2;
_point.Y -= (int)((height - lineheight) / 2);
}
else
{
_point.X /= 2;
_point.Y /= 3;
_point.Y -= (int)((height - lineheight) / 2);
}
point.Y = _point.Y;
int n = 0;
foreach (string s in output)
{
point.X = _point.X /*- (int)(output_size[n].Width / 2)*/;
FontTracker.DrawString(gout, s, new SolidBrush(ForeColor), point, scale_x, scale_y);
//gout.DrawString( s
// , c.FontTracker
// , attrib.text_output
// , point );
point.Y += (int)(output_size[n].Height) + ((n > 0) ? 2 : 0);
n++;
}
}
}
