/// <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>
/// 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;
}
}
}
}
