internal void Remove(int lineId)
{
#if DEBUG
if (lineId < 0)
{
throw new NotSupportedException();
}
#endif
if ((layerFlags & FLOWLAYER_HAS_MULTILINE) == 0)
{
return;
}
List <EditableTextLine> lines = (List <EditableTextLine>)lineCollection;
if (lines.Count < 2)
{
return;
}
EditableTextLine tobeRemovedLine = lines[lineId];
tobeRemovedLine.editableFlowLayer = null;
int cy = tobeRemovedLine.Top;
lines.RemoveAt(lineId); int j = lines.Count;
for (int i = lineId; i < j; ++i)
{
EditableTextLine line = lines[i];
line.SetTop(cy); line.SetLineNumber(i); cy += line.ActualLineHeight;
}
if (lines.Count == 1)
{
lineCollection = lines[0];
FlowLayerHasMultiLines = false;
}
}
void AppendLine(EditableTextLine line)
{
if ((layerFlags & FLOWLAYER_HAS_MULTILINE) != 0)
{
List <EditableTextLine> lines = (List <EditableTextLine>)lineCollection;
int lineCount = lines.Count;
EditableTextLine lastLine = lines[lineCount - 1];
line.SetLineNumber(lineCount);
line.SetTop(lastLine.Top + lastLine.ActualLineHeight);
lines.Add(line);
}
else
{
EditableTextLine onlyLine = (EditableTextLine)lineCollection;
List <EditableTextLine> newLineList = new List <EditableTextLine>();
newLineList.Add(onlyLine);
line.SetTop(onlyLine.ActualLineHeight);
line.SetLineNumber(1);
newLineList.Add(line);
lineCollection = newLineList;
FlowLayerHasMultiLines = true;
}
}
void InsertLine(int insertAt, EditableTextLine textLine)
{
if (insertAt < 0)
{
throw new NotSupportedException();
}
List <EditableTextLine> lines = lineCollection as List <EditableTextLine>;
if (lines != null)
{
int j = lines.Count;
if (insertAt > j - 1)
{
AppendLine(textLine);
}
else
{
EditableTextLine line = lines[insertAt];
int cy = line.Top;
textLine.SetTop(cy);
textLine.SetLineNumber(insertAt);
cy += line.ActualLineHeight;
for (int i = insertAt; i < j; i++)
{
line = lines[i];
line.SetTop(cy);
line.SetLineNumber(i + 1);
cy += line.ActualLineHeight;
}
textLine.editableFlowLayer = this;
lines.Insert(insertAt, textLine);
}
}
else
{
lines = new List <EditableTextLine>();
lines.Add((EditableTextLine)lineCollection);
lineCollection = lines;
FlowLayerHasMultiLines = true;
int j = lines.Count;
if (insertAt > j - 1)
{
AppendLine(textLine);
}
else
{
EditableTextLine line = lines[insertAt];
int cy = line.Top;
textLine.SetTop(cy);
textLine.SetLineNumber(insertAt);
cy += line.ActualLineHeight;
for (int i = insertAt; i < j; i++)
{
line = lines[i];
line.SetTop(cy);
line.SetLineNumber(i + 1);
cy += line.ActualLineHeight;
}
textLine.editableFlowLayer = this;
lines.Insert(insertAt, textLine);
}
}
}
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)
{
#if DEBUG
vinv_dbug_BeginSetElementBound(currentRun);
#endif
int v_desired_width = currentRun.Width;
int v_desired_height = currentRun.Height;
if (isFirstRunInThisLine)
{
lastestIsBlock = currentRun.IsBlockElement;
if (v_desired_height > maxHeightInRow)
{
maxHeightInRow = v_desired_height;
}
EditableRun.DirectSetLocation(currentRun, curX, 0);
if (v_desired_height > maxHeightInRow)
{
maxHeightInRow = v_desired_height;
}
if (lastestIsBlock)
{
v_desired_width = ownerClientWidth;
}
EditableRun.DirectSetSize(currentRun,
v_desired_width, v_desired_height);
currentRun.MarkValidContentArrangement();
curX += v_desired_width;
isFirstRunInThisLine = false;
}
else
{
if (lastestIsBlock || currentRun.IsBlockElement ||
(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.IsBlockElement;
if (v_desired_height > maxHeightInRow)
{
maxHeightInRow = v_desired_height;
}
EditableRun.DirectSetLocation(currentRun, curX, 0);
EditableRun.DirectSetSize(currentRun,
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();
}
public void SetCurrentLineTop(int y)
{
currentLine.SetTop(y);
}
void InsertLine(int insertAt, EditableTextLine textLine)
{
if (insertAt < 0)
{
throw new NotSupportedException();
}
List<EditableTextLine> lines = lineCollection as List<EditableTextLine>;
if (lines != null)
{
int j = lines.Count;
if (insertAt > j - 1)
{
AppendLine(textLine);
}
else
{
EditableTextLine line = lines[insertAt];
int cy = line.Top;
textLine.SetTop(cy);
textLine.SetLineNumber(insertAt);
cy += line.ActualLineHeight;
for (int i = insertAt; i < j; i++)
{
line = lines[i];
line.SetTop(cy);
line.SetLineNumber(i + 1);
cy += line.ActualLineHeight;
}
textLine.editableFlowLayer = this;
lines.Insert(insertAt, textLine);
}
}
else
{
lines = new List<EditableTextLine>();
lines.Add((EditableTextLine)lineCollection);
lineCollection = lines;
FlowLayerHasMultiLines = true;
int j = lines.Count;
if (insertAt > j - 1)
{
AppendLine(textLine);
}
else
{
EditableTextLine line = lines[insertAt];
int cy = line.Top;
textLine.SetTop(cy);
textLine.SetLineNumber(insertAt);
cy += line.ActualLineHeight;
for (int i = insertAt; i < j; i++)
{
line = lines[i];
line.SetTop(cy);
line.SetLineNumber(i + 1);
cy += line.ActualLineHeight;
}
textLine.editableFlowLayer = this;
lines.Insert(insertAt, textLine);
}
}
}
void AppendLine(EditableTextLine line)
{
if ((layerFlags & FLOWLAYER_HAS_MULTILINE) != 0)
{
List<EditableTextLine> lines = (List<EditableTextLine>)lineCollection;
int lineCount = lines.Count;
EditableTextLine lastLine = lines[lineCount - 1];
line.SetLineNumber(lineCount);
line.SetTop(lastLine.Top + lastLine.ActualLineHeight);
lines.Add(line);
}
else
{
EditableTextLine onlyLine = (EditableTextLine)lineCollection;
List<EditableTextLine> newLineList = new List<EditableTextLine>();
newLineList.Add(onlyLine);
line.SetTop(onlyLine.ActualLineHeight);
line.SetLineNumber(1);
newLineList.Add(line);
lineCollection = newLineList;
FlowLayerHasMultiLines = true;
}
}