internal IEnumerable <EditableRun> TextRunForward(EditableRun startRun, EditableRun stopRun)
{
EditableTextLine currentLine = startRun.OwnerEditableLine;
EditableTextLine stopLine = stopRun.OwnerEditableLine;
if (currentLine == stopLine)
{
foreach (EditableRun r in currentLine.GetVisualElementForward(startRun, stopRun))
{
yield return(r);
}
}
else
{
foreach (EditableRun r in currentLine.GetVisualElementForward(startRun))
{
yield return(r);
}
currentLine = currentLine.Next;
while (currentLine != null)
{
if (currentLine == stopLine)
{
foreach (EditableRun r in currentLine.GetTextRunIter())
{
if (r == stopRun)
{
break;
}
else
{
yield return(r);
}
}
break;
}
else
{
foreach (EditableRun r in currentLine.GetTextRunIter())
{
yield return(r);
}
currentLine = currentLine.Next;
}
}
}
}
void PerformHorizontalFlowArrangeForMultilineText(
int ownerClientLeft, int ownerClientWidth,
int ownerClientTop)
{
#if DEBUG
long startTick = DateTime.Now.Ticks;
#endif
List <EditableTextLine> lines = (List <EditableTextLine>) this.lineCollection;
int ownerClientRight = ownerClientLeft + ownerClientWidth;
int curX = 0;
int curY = 0;
bool lastestIsBlock = false;
int maxWidth = 0;
int curY_fromTop = ownerClientTop;
int maxHeightInRow = EditableTextLine.DEFAULT_LINE_HEIGHT;
int lineCount = lines.Count;
for (int i = 0; i < lineCount; ++i)
{
EditableTextLine line = lines[i];
curX = ownerClientLeft;
lastestIsBlock = false;
line.SetTop(curY_fromTop);
if (!line.NeedArrange)
{
maxHeightInRow = line.ActualLineHeight;
if (line.ActualLineWidth > maxWidth)
{
maxWidth = line.ActualLineWidth;
}
}
else
{
maxHeightInRow = EditableTextLine.DEFAULT_LINE_HEIGHT;
EditableTextLine newLine = null;
line.ValidateContentArrangement();
bool isFirstRunInThisLine = true;
foreach (EditableRun currentRun in line.GetTextRunIter())
{
#if DEBUG
vinv_dbug_BeginSetElementBound(currentRun);
#endif
int v_desired_width = currentRun.Width;
int v_desired_height = currentRun.Height;
if (isFirstRunInThisLine)
{
lastestIsBlock = currentRun.IsInlineBlockElement;
if (v_desired_height > maxHeightInRow)
{
maxHeightInRow = v_desired_height;
}
currentRun.SetLocation(curX, 0);
if (v_desired_height > maxHeightInRow)
{
maxHeightInRow = v_desired_height;
}
if (lastestIsBlock)
{
v_desired_width = ownerClientWidth;
}
currentRun.SetSize(v_desired_width, v_desired_height);
currentRun.MarkValidContentArrangement();
curX += v_desired_width;
isFirstRunInThisLine = false;
}
else
{
if (lastestIsBlock || currentRun.IsInlineBlockElement ||
(curX + v_desired_width > ownerClientRight))
{
newLine = new EditableTextLine(this);
newLine.AddLast(currentRun);
curY = curY_fromTop + maxHeightInRow;
curY_fromTop = curY;
maxHeightInRow = EditableTextLine.DEFAULT_LINE_HEIGHT;
EditableRun nextR = currentRun.NextTextRun;
while (nextR != null)
{
line.UnsafeRemoveVisualElement(nextR);
newLine.AddLast(nextR);
nextR = nextR.NextTextRun;
}
if (i + 1 == lineCount)
{
lines.Add(newLine);
}
else
{
lines.Insert(i + 1, newLine);
}
lineCount++;
break;
}
else
{
lastestIsBlock = currentRun.IsInlineBlockElement;
if (v_desired_height > maxHeightInRow)
{
maxHeightInRow = v_desired_height;
}
currentRun.SetLocation(curX, 0);
currentRun.SetSize(v_desired_width, v_desired_height);
currentRun.MarkValidContentArrangement();
curX += v_desired_width;
}
}
#if DEBUG
vinv_dbug_EndSetElementBound(currentRun);
#endif
}
if (curX > maxWidth)
{
maxWidth = curX;
}
}
line.SetPostArrangeLineSize(maxWidth, maxHeightInRow);
curY = curY_fromTop + maxHeightInRow;
curY_fromTop = curY;
}
ValidateArrangement();
}