internal TextFlowSelectSession(TextFlowLayer textLayer)
{
//this controller control the editaible-textflow-layer
_textLayer = textLayer;
//write to textflow-layer with text-line-writer (handle the writing line)
_lineEditor = new TextFlowEditWalker(textLayer);
}
internal VisualSelectionRange(
TextFlowLayer layer,
EditableVisualPointInfo startPoint,
EditableVisualPointInfo endPoint)
{
_layer = layer;
_startPoint = startPoint;
_endPoint = endPoint;
this.BackgroundColor = Color.FromArgb(150, Color.Yellow);
}
internal TextLineBox(TextFlowLayer textFlowLayer)
{
_textFlowLayer = textFlowLayer;
_actualLineHeight = textFlowLayer.DefaultLineHeight; //we start with default line height
#if DEBUG
this.dbugLineId = dbugLineTotalCount;
dbugLineTotalCount++;
#endif
OverlappedTop = 3; //test only
OverlappedBottom = 3; //test only
}
internal TextFlowEditSession(TextFlowLayer textLayer) : base(textLayer)
{
//and record editing hx, support undo-redo
_commandHistoryList = new DocumentCommandCollection(this);
#if DEBUG
if (dbugEnableTextManRecorder)
{
_dbugActivityRecorder = new debugActivityRecorder();
_lineEditor.dbugTextManRecorder = _dbugActivityRecorder;
throw new NotSupportedException();
_dbugActivityRecorder.Start(null);
}
#endif
}
public TextFlowWalkerBase(TextFlowLayer flowlayer)
{
#if DEBUG
this.dbug_MyId = dbugTotalId;
dbugTotalId++;
#endif
_textFlowLayer = flowlayer;
//flowlayer.Reflow += flowlayer_Reflow;
_currentLine = flowlayer.GetTextLine(0);
if (_currentLine.FirstRun != null)
{
_currentTextRun = _currentLine.FirstRun;
}
}
public TextFlowRenderBox(int width, int height, bool isMultiLine)
: base(width, height)
{
var defaultRunStyle = new RunStyle();
defaultRunStyle.FontColor = Color.Black; //set default
defaultRunStyle.ReqFont = GlobalRootGraphic.CurrentRootGfx.DefaultTextEditFontInfo; //TODO: review here
_textLayer = new TextFlowLayer(this, defaultRunStyle); //presentation
_textLayer.ContentSizeChanged += (s, e) => OnTextContentSizeChanged();
//
_editSession = new TextFlowEditSession(_textLayer);//controller
_isMultiLine = isMultiLine;
RenderBackground = RenderSelectionRange = RenderMarkers = true;
//
MayHasViewport = true;
BackgroundColor = Color.White;// Color.Transparent;
}
public Rectangle dbugGetRectAreaOf(int beginlineNum, int beginColumnNum, int endLineNum, int endColumnNum)
{
TextFlowLayer flowLayer = _textLayer;
TextLineBox beginLine = flowLayer.GetTextLineAtPos(beginlineNum);
if (beginLine == null)
{
return(Rectangle.Empty);
}
if (beginlineNum == endLineNum)
{
VisualPointInfo beginPoint = beginLine.GetTextPointInfoFromCharIndex(beginColumnNum);
VisualPointInfo endPoint = beginLine.GetTextPointInfoFromCharIndex(endColumnNum);
return(new Rectangle(beginPoint.X, beginLine.Top, endPoint.X, beginLine.ActualLineHeight));
}
else
{
VisualPointInfo beginPoint = beginLine.GetTextPointInfoFromCharIndex(beginColumnNum);
TextLineBox endLine = flowLayer.GetTextLineAtPos(endLineNum);
VisualPointInfo endPoint = endLine.GetTextPointInfoFromCharIndex(endColumnNum);
return(new Rectangle(beginPoint.X, beginLine.Top, endPoint.X, beginLine.ActualLineHeight));
}
}
//TODO: review this class again
public TextFlowEditWalker(TextFlowLayer textLayer) : base(textLayer)
{
}
internal void RemoveOwnerFlowLayer() => _textFlowLayer = null;
