/// <summary>
/// charIndex，戻り値はblockで0起点の値．
/// </summary>
public Rectangle[] GetStringRect(Graphics g, Block block, int charIndex, int length)
{
int startLineIndex, startColumnIndex;
var startLine = block.GetLineSegmentAtLocal(charIndex, out startLineIndex, out startColumnIndex);
var startVisLines = _visualLineCache.GetVisualLines(g, startLine);
var startVisLine = GetVisualLineAt(g, startLine, startColumnIndex);
var endCharIndex = charIndex + length - 1;
int endLineIndex, endColumnIndex;
var endLine = block.GetLineSegmentAtLocal(endCharIndex, out endLineIndex, out endColumnIndex);
var endVisLines = _visualLineCache.GetVisualLines(g, endLine);
var endVisLine = GetVisualLineAt(g, endLine, endColumnIndex);
var blockBounds = _boundsCache.GetBounds(g, block);
if (startLineIndex == endLineIndex)
{
/// 最初のLineと最後のLineが同じ場合
var startLineBounds = _boundsCache.GetBounds(g, startLine);
var rects = GetStringRectsInLine(g, startLine, startColumnIndex, length);
return(RectUtil.Translate(rects, (Size)startLineBounds.Location - (Size)blockBounds.Location));
}
else
{
/// 最初の行と最後の行が異なる場合
var ret = new List <Rectangle>();
/// 最初の行
var startLineBounds = _boundsCache.GetBounds(g, startLine);
var startLineStringRects = GetStringRectsInLine(
g, startLine, startColumnIndex, startLine.Length - startColumnIndex
);
ret.AddRange(
RectUtil.Translate(
startLineStringRects,
(Size)startLineBounds.Location - (Size)blockBounds.Location
)
);
/// 間の行
for (int i = startLineIndex + 1; i < endLineIndex; ++i)
{
var line = block.LineSegments.ElementAt(i);
var lineBounds = _boundsCache.GetBounds(g, line);
var visLines = _visualLineCache.GetVisualLines(g, line);
var rects = visLines.Select(
visLine => RectUtil.Translate(
visLine.Bounds, (Size)lineBounds.Location - (Size)blockBounds.Location
)
);
ret.AddRange(rects);
}
/// 最後の行
var endLineBounds = _boundsCache.GetBounds(g, endLine);
var endLineStringRects = GetStringRectsInLine(
g, endLine, 0, endColumnIndex + 1
);
ret.AddRange(
RectUtil.Translate(
endLineStringRects,
(Size)endLineBounds.Location - (Size)blockBounds.Location
)
);
return(ret.ToArray());
}
}