internal void RenderLines(DrawingContext dc)
{
for (int i = 0; i < _lineResults.Length; i++)
{
FixedLineResult lineResult = _lineResults[i];
Pen pen = new Pen(Brushes.Red, 1);
Rect layoutBox = lineResult.LayoutBox;
dc.DrawRectangle(null, pen, layoutBox);
CultureInfo EnglishCulture = System.Windows.Markup.TypeConverterHelper.InvariantEnglishUS;
FixedPage fp = _fixedTextBuilder.FixedTextContainer.FixedDocument.GetFixedPage(PageIndex);
FormattedText ft = new FormattedText(i.ToString(),
EnglishCulture,
FlowDirection.LeftToRight,
new Typeface("Arial"),
10,
Brushes.White,
fp.GetDpi().PixelsPerDip);
Point labelLocation = new Point(layoutBox.Left - 25, (layoutBox.Bottom + layoutBox.Top) / 2 - 10);
Geometry geom = ft.BuildHighlightGeometry(labelLocation);
Pen backgroundPen = new Pen(Brushes.Black, 1);
dc.DrawGeometry(Brushes.Black, backgroundPen, geom);
dc.DrawText(ft, labelLocation);
}
}
//
/// <summary>
/// If the point is in one of the lines, return that line.
/// Otherwise, return the line with smallest (modified) manhattan distance.
/// </summary>
/// <param name="pt"></param>
/// <returns></returns>
internal FixedNode[] FindSnapToLine(Point pt)
{
Debug.Assert(_lineResults != null);
FixedLineResult closestLine = null;
FixedLineResult closestManhattan = null;
double minVerDistance = double.MaxValue;
double minHorDistance = double.MaxValue;
double minManhattan = double.MaxValue;
foreach (FixedLineResult lineResult in _lineResults)
{
double absVerDistance = Math.Max(0, (pt.Y > lineResult.LayoutBox.Y) ? (pt.Y - lineResult.LayoutBox.Bottom) : (lineResult.LayoutBox.Y - pt.Y));
double absHorDistance = Math.Max(0, (pt.X > lineResult.LayoutBox.X) ? (pt.X - lineResult.LayoutBox.Right) : (lineResult.LayoutBox.X - pt.X));
if (absVerDistance == 0 && absHorDistance == 0)
{
return(lineResult.Nodes);
}
//Update the closest line information. We need this if we can't find a close line below the point
if (absVerDistance < minVerDistance || (absVerDistance == minVerDistance && absHorDistance < minHorDistance))
{
minVerDistance = absVerDistance;
minHorDistance = absHorDistance;
closestLine = lineResult;
}
//Update closest manhattan. We decide which metric to choose later.
double manhattan = 5 * absVerDistance + absHorDistance;
//Consider removing second condition, or perhaps come up with an exponential weighting for vertical.
if (manhattan < minManhattan && absVerDistance < lineResult.LayoutBox.Height)
{
minManhattan = manhattan;
closestManhattan = lineResult;
}
}
//We couldn't find the next line below. Return the closest line in this case
if (closestLine != null)
{
if (closestManhattan != null && (closestManhattan.LayoutBox.Left > closestLine.LayoutBox.Right || closestLine.LayoutBox.Left > closestManhattan.LayoutBox.Right))
{
// they don't overlap, so go with closer one
return(closestManhattan.Nodes);
}
// no manhattan, or they overlap/are in same column
return(closestLine.Nodes);
}
return(null);
}
//--------------------------------------------------------------------
//
// Public Methods
//
//---------------------------------------------------------------------
// IComparable Override
public int CompareTo(object o)
{
if (o == null)
{
throw new ArgumentNullException("o");
}
if (o.GetType() != typeof(FixedLineResult))
{
throw new ArgumentException(SR.Get(SRID.UnexpectedParameterType, o.GetType(), typeof(FixedLineResult)), "o");
}
FixedLineResult lineResult = (FixedLineResult)o;
return(this.BaseLine.CompareTo(lineResult.BaseLine));
}
// Token: 0x06002D96 RID: 11670 RVA: 0x000CD5D0 File Offset: 0x000CB7D0
internal FixedNode[] FindSnapToLine(Point pt)
{
FixedLineResult fixedLineResult = null;
FixedLineResult fixedLineResult2 = null;
double num = double.MaxValue;
double num2 = double.MaxValue;
double num3 = double.MaxValue;
foreach (FixedLineResult fixedLineResult3 in this._lineResults)
{
double num4 = Math.Max(0.0, (pt.Y > fixedLineResult3.LayoutBox.Y) ? (pt.Y - fixedLineResult3.LayoutBox.Bottom) : (fixedLineResult3.LayoutBox.Y - pt.Y));
double num5 = Math.Max(0.0, (pt.X > fixedLineResult3.LayoutBox.X) ? (pt.X - fixedLineResult3.LayoutBox.Right) : (fixedLineResult3.LayoutBox.X - pt.X));
if (num4 == 0.0 && num5 == 0.0)
{
return(fixedLineResult3.Nodes);
}
if (num4 < num || (num4 == num && num5 < num2))
{
num = num4;
num2 = num5;
fixedLineResult = fixedLineResult3;
}
double num6 = 5.0 * num4 + num5;
if (num6 < num3 && num4 < fixedLineResult3.LayoutBox.Height)
{
num3 = num6;
fixedLineResult2 = fixedLineResult3;
}
}
if (fixedLineResult == null)
{
return(null);
}
if (fixedLineResult2 != null && (fixedLineResult2.LayoutBox.Left > fixedLineResult.LayoutBox.Right || fixedLineResult.LayoutBox.Left > fixedLineResult2.LayoutBox.Right))
{
return(fixedLineResult2.Nodes);
}
return(fixedLineResult.Nodes);
}
//--------------------------------------------------------------------
//
// Public Properties
//
//---------------------------------------------------------------------
//--------------------------------------------------------------------
//
// Public Events
//
//---------------------------------------------------------------------
//-------------------------------------------------------------------
//
// Internal Methods
//
//---------------------------------------------------------------------
#region Internal Methods
//-------------------------------------
// Line Detection
//-------------------------------------
internal void SetupLineResults(FixedLineResult[] lineResults)
{
_lineResults = lineResults;
#if DEBUG
DocumentsTrace.FixedTextOM.Builder.Trace(string.Format("----LineResults Begin Dump-----\r\n"));
foreach(FixedLineResult lineResult in _lineResults)
{
Debug.Assert(lineResult != null);
DocumentsTrace.FixedTextOM.Builder.Trace(string.Format("{0}\r\n", lineResult.ToString()));
}
DocumentsTrace.FixedTextOM.Builder.Trace(string.Format("----LineResults End Dump-----\r\n"));
#endif
}
