/// <summary>
/// Offsets the rectangle of the specified linebox by the specified gap,
/// and goes deep for rectangles of children in that linebox.
/// </summary>
/// <param name="lineBox"></param>
/// <param name="gap"></param>
internal void OffsetRectangle(CssLineBox lineBox, double gap)
{
if (Rectangles.ContainsKey(lineBox))
{
var r = Rectangles[lineBox];
Rectangles[lineBox] = new RRect(r.X, r.Y + gap, r.Width, r.Height);
}
}
/// <summary>
/// Searches for the first word occurrence inside the box, on the specified linebox
/// </summary>
/// <param name="b"></param>
/// <param name="line"> </param>
/// <returns></returns>
internal CssRect FirstWordOccourence(CssBox b, CssLineBox line)
{
if (b.Words.Count == 0 && b.Boxes.Count == 0)
{
return null;
}
if (b.Words.Count > 0)
{
foreach (CssRect word in b.Words)
{
if (line.Words.Contains(word))
{
return word;
}
}
return null;
}
else
{
foreach (CssBox bb in b.Boxes)
{
CssRect w = FirstWordOccourence(bb, line);
if (w != null)
{
return w;
}
}
return null;
}
}
/// <summary>
/// Get css word box under the given sub-tree at the given x,y location.<br/>
/// the location must be in correct scroll offset.
/// </summary>
/// <param name="lineBox">the line box to search in</param>
/// <param name="location">the location to find the box at</param>
/// <returns>css word box if exists or null</returns>
public static CssRect GetCssBoxWord(CssLineBox lineBox, RPoint location)
{
foreach (var rects in lineBox.Rectangles)
{
foreach (var word in rects.Key.Words)
{
// add word spacing to word width so sentence won't have hols in it when moving the mouse
var rect = word.Rectangle;
rect.Width += word.OwnerBox.ActualWordSpacing;
if (rect.Contains(location))
{
return word;
}
}
}
return null;
}
