public PositionedChunk(ITextChunkView <TDocument> chunk, int line, int x, float baseLine)
{
Chunk = chunk;
Line = line;
X = x;
BaseLine = baseLine;
EndOffsetWithoutLineBreaks = chunk.EndOffsetWithoutLineBreaks;
}
public void BreakAtOffset(int breakPoint, out ITextChunkView <TDocument> first, out ITextChunkView <TDocument> second)
{
// is the break within the leading whitespace content? If so, dont break.
if (breakPoint <= TrimmedStartOffset)
{
first = this;
second = null;
return;
}
// is the break within the trailing whitespace content? If so, dont break.
if (breakPoint >= TrimmedEndOffset)
{
first = this;
second = null;
return;
}
first = SubChunk(OffsetPosition, Node.Document.CreatePosition(breakPoint, Bias.Backward));
second = SubChunk(Node.Document.CreatePosition(breakPoint, Bias.Forward), EndOffsetPosition);
}
/// <summary>
/// Computes the nearest valid break offset for the given width, and attempts to break this chunk
/// into two independent text-chunks. The first chunk will contain the text that should remain on
/// the current line, the second chunk contains the content that should be pushed to the next
/// line.
/// </summary>
/// <param name="width">The width position.</param>
/// <param name="first">The left hand chunk, never null.</param>
/// <param name="second">The right hand chunk or null if the content did not break.</param>
public void BreakAt(float width, out ITextChunkView <TDocument> first, out ITextChunkView <TDocument> second)
{
var breakPoint = FindWordBreakOffset(width);
BreakAtOffset(breakPoint, out first, out second);
}
