/// <summary>
/// Measures the location of an arbritrary # of words within a string
/// </summary>
private WordStartFinish[] MeasureString(string s, Graphics g, Font drawFont, StringFormat drawFormat, CharacterRange[] cra)
{
if (cra.Length <= MEASUREMAX) // handle the simple case of < MEASUREMAX words
return MeasureString32(s, g, drawFont, drawFormat, cra);
// Need to compensate for SetMeasurableCharacterRanges limitation of 32 (MEASUREMAX)
int mcra = (cra.Length / MEASUREMAX); // # of full 32 arrays we need
int ip = cra.Length % MEASUREMAX; // # of partial entries needed for last array (if any)
WordStartFinish[] sz = new WordStartFinish[cra.Length]; // this is the final result;
float startPos=0;
CharacterRange[] cra32 = new CharacterRange[MEASUREMAX]; // fill out
int icra=0; // index thru the cra
for (int i=0; i < mcra; i++)
{
// fill out the new array
int ticra = icra;
for (int j=0; j < cra32.Length; j++)
{
cra32[j] = cra[ticra++];
cra32[j].First -= cra[icra].First; // adjust relative offsets of strings
}
// measure the word locations (in the new string)
// ???? should I put a blank in front of it??
string ts = s.Substring(cra[icra].First,
cra[icra + cra32.Length-1].First + cra[icra + cra32.Length-1].Length - cra[icra].First);
WordStartFinish[] pos = MeasureString32(ts, g, drawFont, drawFormat, cra32);
// copy the values adding in the new starting positions
for (int j = 0; j < pos.Length; j++)
{
sz[icra].start = pos[j].start + startPos;
sz[icra++].end = pos[j].end + startPos;
}
startPos = sz[icra-1].end; // reset the start position for the next line
}
// handle the remaining character
if (ip > 0)
{
// resize the range array
cra32 = new CharacterRange[ip];
// fill out the new array
int ticra = icra;
for (int j=0; j < cra32.Length; j++)
{
cra32[j] = cra[ticra++];
cra32[j].First -= cra[icra].First; // adjust relative offsets of strings
}
// measure the word locations (in the new string)
// ???? should I put a blank in front of it??
string ts = s.Substring(cra[icra].First,
cra[icra + cra32.Length-1].First + cra[icra + cra32.Length-1].Length - cra[icra].First);
WordStartFinish[] pos = MeasureString32(ts, g, drawFont, drawFormat, cra32);
// copy the values adding in the new starting positions
for (int j = 0; j < pos.Length; j++)
{
sz[icra].start = pos[j].start + startPos;
sz[icra++].end = pos[j].end + startPos;
}
}
return sz;
}
/// <summary>
/// Measures the location of words within a string; limited by .Net 1.1 to 32 words
/// MEASUREMAX is a constant that defines that limit
/// </summary>
/// <param name="s"></param>
/// <param name="g"></param>
/// <param name="drawFont"></param>
/// <param name="drawFormat"></param>
/// <param name="cra"></param>
/// <returns></returns>
private WordStartFinish[] MeasureString32(string s, Graphics g, Font drawFont, StringFormat drawFormat, CharacterRange[] cra)
{
if (s == null || s.Length == 0)
return null;
drawFormat.SetMeasurableCharacterRanges(cra);
Region[] rs = new Region[cra.Length];
rs = g.MeasureCharacterRanges(s, drawFont, new RectangleF(0, 0, float.MaxValue, float.MaxValue),
drawFormat);
WordStartFinish[] sz = new WordStartFinish[cra.Length];
int isz = 0;
foreach (Region r in rs)
{
RectangleF mr = r.GetBounds(g);
sz[isz].start = RSize.PointsFromPixels(g, mr.Left);
sz[isz].end = RSize.PointsFromPixels(g, mr.Right);
isz++;
}
return sz;
}
/// <summary>
/// Measures the location of an arbritrary # of words within a string
/// </summary>
private static WordStartFinish[] MeasureString(string s, Graphics g, System.Drawing.Font drawFont, StringFormat drawFormat, CharacterRange[] cra)
{
if (cra.Length <= MEASUREMAX) // handle the simple case of < MEASUREMAX words
{
return(MeasureString32(s, g, drawFont, drawFormat, cra));
}
// Need to compensate for SetMeasurableCharacterRanges limitation of 32 (MEASUREMAX)
int mcra = (cra.Length / MEASUREMAX); // # of full 32 arrays we need
int ip = cra.Length % MEASUREMAX; // # of partial entries needed for last array (if any)
WordStartFinish[] sz = new WordStartFinish[cra.Length]; // this is the final result;
float startPos = 0;
CharacterRange[] cra32 = new CharacterRange[MEASUREMAX]; // fill out
int icra = 0; // index thru the cra
for (int i = 0; i < mcra; i++)
{
// fill out the new array
int ticra = icra;
for (int j = 0; j < cra32.Length; j++)
{
cra32[j] = cra[ticra++];
cra32[j].First -= cra[icra].First; // adjust relative offsets of strings
}
// measure the word locations (in the new string)
// ???? should I put a blank in front of it??
string ts = s.Substring(cra[icra].First,
cra[icra + cra32.Length - 1].First + cra[icra + cra32.Length - 1].Length - cra[icra].First);
WordStartFinish[] pos = MeasureString32(ts, g, drawFont, drawFormat, cra32);
// copy the values adding in the new starting positions
for (int j = 0; j < pos.Length; j++)
{
sz[icra].start = pos[j].start + startPos;
sz[icra++].end = pos[j].end + startPos;
}
startPos = sz[icra - 1].end; // reset the start position for the next line
}
// handle the remaining character
if (ip > 0)
{
// resize the range array
cra32 = new CharacterRange[ip];
// fill out the new array
int ticra = icra;
for (int j = 0; j < cra32.Length; j++)
{
cra32[j] = cra[ticra++];
cra32[j].First -= cra[icra].First; // adjust relative offsets of strings
}
// measure the word locations (in the new string)
// ???? should I put a blank in front of it??
string ts = s.Substring(cra[icra].First,
cra[icra + cra32.Length - 1].First + cra[icra + cra32.Length - 1].Length - cra[icra].First);
WordStartFinish[] pos = MeasureString32(ts, g, drawFont, drawFormat, cra32);
// copy the values adding in the new starting positions
for (int j = 0; j < pos.Length; j++)
{
sz[icra].start = pos[j].start + startPos;
sz[icra++].end = pos[j].end + startPos;
}
}
return(sz);
}
