/// <summary>
/// Allows for customised or precalculated ascent mesurements to be passed, fastest way to draw a string
/// </summary>
/// <param name="g"></param>
/// <param name="pos"></param>
/// <param name="fontTable"></param>
/// <param name="mesurements"></param>
public void drawString(Graphics g, PointF pos, FontFamily[] fontTable, lineInfo mesurements)
{
int i, j;
string printString;
Font printFont;
SizeF charSize;
//float across=pos.X;
RTFChar fc;
PointF charPos = pos;
if (data == null)
{
return;
}
for (i = 0; i < data.Length; i++)
{
fc = data[i];
printString = fc.Char.ToString();
//adjust character position to meat the baseline
charPos.Y = pos.Y + mesurements.baseline - mesurements.ascents[i];
//apend any characters drawn in the same style
for (j = (i + 1); (j < data.Length) && (fc.compareFormat(data[j])); j++)
{
printString += data[j].Char;
}
//update i to the end of the common string
i = j - 1;
//cache the print font
printFont = fc.getFont(fontTable);
//charSize = fc.measure(g, fontTable);
charSize = g.MeasureString(printString, printFont, 999, RTFLine.defalutFormat());
//draw the string
g.DrawString(printString, printFont, new SolidBrush(fc.col), charPos, RTFLine.defalutFormat());
charPos.X += charSize.Width;
}
}
/// <summary>
/// Add a line to a formatted string.
/// </summary>
/// <param name="fs">A formattedString</param>
/// <param name="fl">A formattedLine</param>
/// <returns>fl appended to fs.</returns>
public static RTFString operator +(RTFString fs, RTFLine fl)
{
RTFString fsNew = fs;
if (fsNew.lines == null)
{
fsNew.lines = new RTFLine[1] {
fl
};
}
else
{
RTFLine[] newlines = new RTFLine[fs.lines.Length + 1];
fs.lines.CopyTo(newlines, 0);
newlines[fs.lines.Length] = fl;
fsNew.lines = newlines;
}
return(fsNew);
}
/// <summary>
/// Concatinated two lines into one.
/// </summary>
/// <param name="fl1">First formattedLine</param>
/// <param name="fl2">Second formattedLine</param>
/// <returns>Concatinated version of the two lines</returns>
public static RTFLine operator +(RTFLine fl1, RTFLine fl2)
{
RTFLine newLine = fl1;
if (fl1.data == null)
{
return(fl2);
}
if (fl2.data == null)
{
return(fl1);
}
RTFChar[] newData = new RTFChar[fl1.data.Length + fl2.data.Length];
fl1.data.CopyTo(newData, 0);
fl2.data.CopyTo(newData, fl1.data.Length);
newLine.data = newData;
return(newLine);
}
/// <summary>
/// measure the dimensions of the line
/// </summary>
/// <param name="g">Graphics context</param>
/// <param name="fontTable">Table of fonts</param>
/// <returns>lineInfo struct with information on the line.</returns>
public lineInfo measure(Graphics g, FontFamily[] fontTable)
{
int i;
lineInfo info;
info.mesurement = new SizeF(0.0f, 0.0f);
info.baseline = 0;
info.ascents = new float[0];
SizeF charSize;
float ascent;
if (data == null)
{
return(info);
}
info.ascents = new float[data.Length];
string printString;
Font printFont;
RTFChar fc;
int j;
for (i = 0; i < data.Length; i++)
{
fc = data[i];
printString = fc.Char.ToString();
//apend any characters drawn in the same style
for (j = (i + 1); (j < data.Length) && (fc.compareFormat(data[j])); j++)
{
printString += data[j].Char;
}
printFont = fc.getFont(fontTable);
charSize = g.MeasureString(printString, printFont, 999, RTFLine.defalutFormat());
ascent = fontTable[data[i].fontIndex].GetCellAscent(data[i].FontStyle);
ascent = data[i].size * (ascent / fontTable[data[i].fontIndex].GetEmHeight(data[i].FontStyle)) * 1.3f;
if (ascent > info.baseline)
{
info.baseline = ascent;
}
info.ascents[i] = ascent;
for (int j2 = i; j2 < j; j2++)
{
info.ascents[j2] = ascent;
}
//update i to the end of the common string
i = j - 1;
//printFont = fc.getFont(fontTable);
//charSize = g.MeasureString(printString, printFont,999,formattedLine.defalutFormat());
info.mesurement.Width += charSize.Width;
if (charSize.Height > info.mesurement.Height)
{
info.mesurement.Height = charSize.Height;
}
}
/*
* for(i=0;i<data.Length;i++)
* {
* //set the height to the maximum character height
*
* charSize = data[i].measure(g, fontTable);
* if(charSize.Height > info.mesurement.Height)
* {
* info.mesurement.Height = charSize.Height;
* }
*
* //calculate the acsent of the character
* ascent = fontTable[data[i].fontIndex].GetCellAscent(data[i].FontStyle);
*
* //convert to pixels
* //ascent = data[i].size * (ascent / fontTable[data[i].fontIndex].GetEmHeight(data[i].FontStyle));
* //ascent = data[i].size / fontTable[data[i].fontIndex].GetEmHeight(data[i].FontStyle) * ascent;
* ascent = data[i].size * (ascent / fontTable[data[i].fontIndex].GetEmHeight(data[i].FontStyle))*1.3f;
*
* //cache this in the mesurements for later use when rendering the string
* info.ascents[i] = ascent;
*
* //baseline might not be related to the biggest font, but the one with the most ascent
* if(ascent > info.baseline)
* {
* info.baseline = ascent;
* }
* info.mesurement.Width += charSize.Width;
* }
*/
return(info);
}
/// <summary>
/// Creates a RTFString from rtf code.
/// </summary>
/// <param name="rtf">rtf code.</param>
/// <returns>A formattedString version of the rtf code.</returns>
public RTFString parseRTF(string rtf)
{
rtCapture.Rtf = rtf;
rtCapture.SelectAll();
int numChars = rtCapture.SelectionLength;
RTFString text = new RTFString();
text.invalidateMesurements();
RTFLine currentLine = new RTFLine();
RTFChar currentChar = new RTFChar();
ArrayList fontTable = new ArrayList();
int fontIndex;
int i;
for (i = 0; i < numChars; i++)
{
rtCapture.Select(i, 1);
currentChar.FontStyle = rtCapture.SelectionFont.Style;
currentChar.size = rtCapture.SelectionFont.Size;
currentChar.Char = rtCapture.SelectedText[0];
currentChar.col = rtCapture.SelectionColor;
if (currentChar.Char == '\r')
{
//do nothing
}
else if (currentChar.Char == '\n')
{
if (currentLine.count == 0)
{
fontIndex = fontTable.IndexOf(rtCapture.SelectionFont.FontFamily);
if (fontIndex == -1)
{
fontIndex = fontTable.Add(rtCapture.SelectionFont.FontFamily);
}
currentChar.fontIndex = fontIndex;
//append to line
currentLine += currentChar;
}
//end line
currentLine.horizontalAllignment = rtCapture.SelectionAlignment;
currentLine.bulleted = rtCapture.SelectionBullet;
text += currentLine;
currentLine = new RTFLine();
}
else
{
//check font table
fontIndex = fontTable.IndexOf(rtCapture.SelectionFont.FontFamily);
if (fontIndex == -1)
{
fontIndex = fontTable.Add(rtCapture.SelectionFont.FontFamily);
}
currentChar.fontIndex = fontIndex;
//append to line
currentLine += currentChar;
}
}
//check if last line was not terminated and needs apending
if (currentLine.data != null)
{
if (currentLine.data.Length > 0)
{
currentLine.horizontalAllignment = rtCapture.SelectionAlignment;
text += currentLine;
}
}
//build the font table
text.fontTable = new FontFamily[fontTable.Count];
for (i = 0; i < fontTable.Count; i++)
{
text.fontTable[i] = (FontFamily)fontTable[i];
}
return(text);
}
