/// <summary>
/// Methods produces DXF string for text of the Flowchart object
/// </summary>
/// <param name="co">Flowchart object to extract text from</param>
/// <param name="po">Parent object if any exist</param>
/// <param name="rect">Object's rectangle if applicable</param>
/// <returns>true if successful otherwise false</returns>
public bool AddText(object co, object po, RectangleF rect)
{
PointF[] pF = null;
MindFusion.FlowChartX.Text.Layout tl = null;
MindFusion.FlowChartX.Text.LayoutOptions lo;
MindFusion.FlowChartX.Text.DrawTextHint dhint = null;
MindFusion.FlowChartX.Text.PlainText text = null;
System.Drawing.SolidBrush br = null;
int tlen = 0;
GraphicsPath gr = null;
Color crText = Color.Transparent;
string strText = "";
long TextID = 0;
RectangleF boundrect = RectangleF.Empty;
Font oFont = null;
StringFormat sformat = null;
float Rotation = 0;
bool bOk = false;
try
{
gr = new GraphicsPath(FillMode.Winding);
if ( co is Box ) // if chart object is Box
{
Box oBox = co as Box;
if ( oBox == null )
return false;
strText = oBox.PlainText;
crText = oBox.TextColor;
TextID = oBox.ZIndex;
boundrect = oBox.BoundingRect;
oFont = oBox.Font;
sformat = oBox.TextFormat;
Rotation = oBox.RotationAngle;
if (!m_ExportTextAsMultiline)
{
TextBox2Path(oBox,0,ref gr);
pF = (PointF[])gr.PathPoints.Clone();
}
}
else if ( co is Table.Cell ) // if chart object is cell in the table
{
Table.Cell oCell = co as Table.Cell;
if ( oCell == null )
return false;
Table oTable = po as Table;
if ( oTable == null )
return false;
if ( rect == RectangleF.Empty )
return false;
strText = oCell.PlainText;
crText = oCell.TextColor;
TextID = NextID();
oFont = oTable.Font;
sformat = oCell.TextFormat;
Rotation = 0;
if (!m_ExportTextAsMultiline)
{
TextRect2Path(rect,ref gr);
pF = (PointF[])gr.PathPoints.Clone();
}
boundrect = rect;
}
else if ( co is Arrow ) // If chart object is arrow
{
Arrow oArrow = co as Arrow;
if ( oArrow == null )
return false;
strText = oArrow.Text;
crText = oArrow.TextColor;
TextID = oArrow.ZIndex;
oFont = oArrow.Font;
sformat = m_FlowChart.TextFormat;
rect = getTextRect(System.Drawing.Graphics.FromHwnd(GetActiveWindow()), oArrow.Style , oArrow.TextStyle,
oArrow.ControlPoints, oArrow.TextColor,oArrow.SegmentCount, oArrow.Text, oArrow.Font,
RectangleF.Empty, ref Rotation);
boundrect = rect;
if (!m_ExportTextAsMultiline)
{
rect.Width+=1;
rect.Height+=1;
boundrect = rect;
if (Rotation!=0)
Rotation = 360 -Rotation;
TextRect2Path(rect,ref gr);
pF = (PointF[])gr.PathPoints.Clone();
}
}
else if ( co is Table ) // If chart object is table itself
{
Table oTable = co as Table;
if ( oTable == null )
return false;
strText = oTable.CaptionPlainText;
crText = oTable.CaptionColor;
TextID = NextID();
rect = new RectangleF(oTable.BoundingRect.X, oTable.BoundingRect.Y,
oTable.BoundingRect.Width, oTable.CaptionHeight);
boundrect = rect;
oFont = oTable.Font;
sformat = oTable.CaptionFormat;
Rotation = 0;
if (!m_ExportTextAsMultiline)
{
TextRect2Path(rect,ref gr);
pF = (PointF[])gr.PathPoints.Clone();
}
}
else
return false;
// Preparing for text processing
if ( strText == "" )
return true;
if ( oFont == null )
oFont = m_FlowChart.Font;
// If 'Multiline' text mode enabled calling method directly
if ( m_ExportTextAsMultiline )
return AddText(TextID,boundrect, strText, crText, oFont ,
sformat, true, Rotation, false);
if ( gr!=null )
gr.Dispose();
// If not 'Multiline' isn't allowed processing text word-by word
tl = new MindFusion.FlowChartX.Text.Layout();
br = new System.Drawing.SolidBrush(crText);
lo = new MindFusion.FlowChartX.Text.LayoutOptions();
dhint = new MindFusion.FlowChartX.Text.DrawTextHint(System.Drawing.Graphics.FromHwnd(GetActiveWindow()),
oFont, br ,sformat, false , null, boundrect, crText, TextID*100, TextID, Rotation );
lo.Alignment = sformat.Alignment;
lo.LineAlignment = sformat.LineAlignment;
text = new MindFusion.FlowChartX.Text.PlainText();
text.Setup(strText, System.Drawing.Graphics.FromHwnd(GetActiveWindow()) , oFont);
tlen = text.PlainText.Length;
tl.LayoutInPolygon( text, docToLocal(pF, boundrect),lo);
tl.Draw(0,0,new MindFusion.FlowChartX.Text.RenderTextCallback(___TextCallback),dhint);
}
catch ( Exception ex )
{
bOk = false;
m_status = ex.Message;
Trace.WriteLine(String.Format("{0} error {1}\n","AddText",ex.Message));
}
return bOk;
}
/// <summary>
/// Draws a previously laid-out text at a specified offset.
/// </summary>
public void Draw(float xOff, float yOff,
RenderTextCallback renderCallback, DrawTextHint hint)
{
if (GetHLines(_totalLines) == null)
throw new Exception("Draw invoked on a non-laid-out text.");
if (GetHLines(_totalLines).Count == 0)
return;
bool styled = (_text is StyledText);
// Original brush and font
System.Drawing.Brush brushOriginal = hint.Brush;
Font fontOriginal = hint.Font;
// We now have the starting line and the number
// of total lines to layout the text in. Go for it
int iword = 0;
for (int i = _startLine; i < _startLine + _totalLines; i++)
{
PointList hLine = GetHLines(_totalLines)[i] as PointList;
for (int j = 0; j < hLine.Count; j += 2)
{
PointF pt1 = hLine[j];
PointF pt2 = hLine[j + 1];
RectangleF rc = new RectangleF(
_bounds.X + xOff + pt1.X,
_bounds.Y + yOff + pt1.Y,
pt2.X - pt1.X, pt2.Y - pt1.Y);
bool newLine = false;
int newword = FitTextInRect(iword, rc, ref newLine);
if (newword > iword)
{
// Calculate the total width of the words
// which are about to be rendered, but skip
// the whitespaces at the front and the rear
int ifront = iword;
int irear = newword - 1;
while (ifront < newword && _text.Words[ifront].IsWhitespace)
ifront++;
while (irear >= ifront && _text.Words[irear].IsWhitespace)
irear--;
int w;
float total = 0;
for (w = ifront; w <= irear; w++)
total += _text.Words[w].Width;
// Adjust the left side of the destination
// rectangle according to the specified alignment
switch (_options.Alignment)
{
case StringAlignment.Near:
// Do nothing
break;
case StringAlignment.Center:
rc.X = rc.X + (rc.Width - total) / 2;
break;
case StringAlignment.Far:
rc.X = rc.Right - total;
break;
}
// Render the words in the range [ifront, irear]
for (w = ifront; w <= irear; w++)
{
Word word = _text.Words[w];
if (!_fits && hint.AddEllipsis && styled)
{
if (i == _startLine + _totalLines - 1)
{
if (j == hLine.Count - 2)
{
if (w == irear)
{
// Append the last word with ellipsis
StyledText.StyledWord sword =
word as StyledText.StyledWord;
StyledText.StyledWord newWord = null;
int chars = sword.Value.Length;
float width = sword.Width;
do
{
newWord = new StyledText.StyledWord(
sword.Value.Substring(0, chars) + "...", sword.Format, sword.Color);
newWord.UpdateMeasures(hint.Graphics, hint.Font);
chars--;
}
while (chars > 0 && newWord.Width > width);
word = newWord;
}
}
}
}
if (!word.IsLineBreak && !word.IsWhitespace)
{
if (styled)
{
// In case of styled text formatting,
// apply fonts and colors
StyledText.StyledWord sword =
word as StyledText.StyledWord;
hint.Font = sword.CreateFont(hint.Font);
hint.Brush = sword.CreateBrush(hint.Brush);
rc.Y += sword.YOffset;
}
// Add 10 to width and height becaus GDI+ stupid
// and clips the text
renderCallback(word.Value, new RectangleF(
rc.X, rc.Y, word.Width + 10, rc.Height + 10), hint);
if (styled)
{
// Restore font and brush
StyledText.StyledWord sword =
word as StyledText.StyledWord;
sword.DisposeFont(hint.Font);
sword.DisposeBrush(hint.Brush);
hint.Font = fontOriginal;
hint.Brush = brushOriginal;
rc.Y -= sword.YOffset;
}
}
rc.X += _text.Words[w].Width;
}
iword = newword;
}
if (newLine)
break;
}
}
}
/// <summary>
/// Styled text rendering callback.
/// </summary>
private void DrawText(string text, RectangleF dest, DrawTextHint hint)
{
// Render formatted text
hint.Graphics.DrawString(text, hint.Font, hint.Brush,
dest, hint.Format);
}
/// <summary>
/// Draws a previously laid-out text at a specified offset.
/// </summary>
public void Draw(float xOff, float yOff,
RenderTextCallback renderCallback, DrawTextHint hint)
{
if (GetHLines(_totalLines) == null)
{
throw new Exception("Draw invoked on a non-laid-out text.");
}
if (GetHLines(_totalLines).Count == 0)
{
return;
}
bool styled = (_text is StyledText);
// Original brush and font
System.Drawing.Brush brushOriginal = hint.Brush;
Font fontOriginal = hint.Font;
// We now have the starting line and the number
// of total lines to layout the text in. Go for it
int iword = 0;
for (int i = _startLine; i < _startLine + _totalLines; i++)
{
PointList hLine = GetHLines(_totalLines)[i] as PointList;
for (int j = 0; j < hLine.Count; j += 2)
{
PointF pt1 = hLine[j];
PointF pt2 = hLine[j + 1];
RectangleF rc = new RectangleF(
_bounds.X + xOff + pt1.X,
_bounds.Y + yOff + pt1.Y,
pt2.X - pt1.X, pt2.Y - pt1.Y);
bool newLine = false;
int newword = FitTextInRect(iword, rc, ref newLine);
if (newword > iword)
{
// Calculate the total width of the words
// which are about to be rendered, but skip
// the whitespaces at the front and the rear
int ifront = iword;
int irear = newword - 1;
while (ifront < newword && _text.Words[ifront].IsWhitespace)
{
ifront++;
}
while (irear >= ifront && _text.Words[irear].IsWhitespace)
{
irear--;
}
int w;
float total = 0;
for (w = ifront; w <= irear; w++)
{
total += _text.Words[w].Width;
}
// Adjust the left side of the destination
// rectangle according to the specified alignment
switch (_options.Alignment)
{
case StringAlignment.Near:
// Do nothing
break;
case StringAlignment.Center:
rc.X = rc.X + (rc.Width - total) / 2;
break;
case StringAlignment.Far:
rc.X = rc.Right - total;
break;
}
// Render the words in the range [ifront, irear]
for (w = ifront; w <= irear; w++)
{
Word word = _text.Words[w];
if (!_fits && hint.AddEllipsis && styled)
{
if (i == _startLine + _totalLines - 1)
{
if (j == hLine.Count - 2)
{
if (w == irear)
{
// Append the last word with ellipsis
StyledText.StyledWord sword =
word as StyledText.StyledWord;
StyledText.StyledWord newWord = null;
int chars = sword.Value.Length;
float width = sword.Width;
do
{
newWord = new StyledText.StyledWord(
sword.Value.Substring(0, chars) + "...", sword.Format, sword.Color);
newWord.UpdateMeasures(hint.Graphics, hint.Font);
chars--;
}while (chars > 0 && newWord.Width > width);
word = newWord;
}
}
}
}
if (!word.IsLineBreak && !word.IsWhitespace)
{
if (styled)
{
// In case of styled text formatting,
// apply fonts and colors
StyledText.StyledWord sword =
word as StyledText.StyledWord;
hint.Font = sword.CreateFont(hint.Font);
hint.Brush = sword.CreateBrush(hint.Brush);
rc.Y += sword.YOffset;
}
// Add 10 to width and height becaus GDI+ stupid
// and clips the text
renderCallback(word.Value, new RectangleF(
rc.X, rc.Y, word.Width + 10, rc.Height + 10), hint);
if (styled)
{
// Restore font and brush
StyledText.StyledWord sword =
word as StyledText.StyledWord;
sword.DisposeFont(hint.Font);
sword.DisposeBrush(hint.Brush);
hint.Font = fontOriginal;
hint.Brush = brushOriginal;
rc.Y -= sword.YOffset;
}
}
rc.X += _text.Words[w].Width;
}
iword = newword;
}
if (newLine)
{
break;
}
}
}
}
