public static int CharacterLength(char c, float fontSize, string fontName)
{
System.Drawing.Bitmap holderBmp = new System.Drawing.Bitmap(1, 1);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(holderBmp);
//bool needRF = needRefresh;
if (c == ' ')
{
}
string text = "" + c;
System.Drawing.SizeF size = g.MeasureString(text,
new System.Drawing.Font(fontName, fontSize));
System.Drawing.Font font = new System.Drawing.Font(fontName, fontSize);
System.Drawing.StringFormat format = new System.Drawing.StringFormat();
format.FormatFlags = System.Drawing.StringFormatFlags.MeasureTrailingSpaces;
System.Drawing.CharacterRange[] ranges = new System.Drawing.CharacterRange[] { new System.Drawing.CharacterRange(0, 1) };
format.SetMeasurableCharacterRanges(ranges);
System.Drawing.Rectangle sdRect = new System.Drawing.Rectangle(0, 0, (int)(size.Width + 0.5), (int)(size.Height + 0.5));
System.Drawing.Region[] regions = g.MeasureCharacterRanges(text, font, sdRect, format);
System.Drawing.RectangleF rectF = regions[0].GetBounds(g);
//needRefresh = needRF;
holderBmp.Dispose();
return((int)(rectF.Width * (c == ' ' ? 1.7 : 1) + 0.5));
}
//======================================
public Size MeasureString(char[] buff, int startAt, int len, Font font)
{
_characterRanges[0] = new System.Drawing.CharacterRange(0, len);
_stringFormat.SetMeasurableCharacterRanges(_characterRanges);
System.Drawing.Font font2 = (System.Drawing.Font)font.InnerFont;
var size = gx.MeasureCharacterRanges(
new string(buff, startAt, len),
font2,
System.Drawing.RectangleF.Empty,
_stringFormat)[0].GetBounds(gx).Size;
return(new PixelFarm.Drawing.Size((int)Math.Round(size.Width), (int)Math.Round(size.Height)));
}
/// <summary>
/// Measures the location of an arbritrary # of words within a string
/// </summary>
private WordStartFinish[] MeasureString(string s, System.Drawing.Graphics g, System.Drawing.Font drawFont, System.Drawing.StringFormat drawFormat, System.Drawing.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;
System.Drawing.CharacterRange[] cra32 = new System.Drawing.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 System.Drawing.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);
}
private string[] MeasureString(PageText pt, System.Drawing.Graphics g, out float[] width)
{
StyleInfo si = pt.SI;
string s = pt.Text;
System.Drawing.Font drawFont = null;
System.Drawing.StringFormat drawFormat = null;
System.Drawing.SizeF ms;
string[] sa = null;
width = null;
try
{
// STYLE
System.Drawing.FontStyle fs = 0;
if (si.FontStyle == FontStyleEnum.Italic)
{
fs |= System.Drawing.FontStyle.Italic;
}
// WEIGHT
switch (si.FontWeight)
{
case FontWeightEnum.Bold:
case FontWeightEnum.Bolder:
case FontWeightEnum.W500:
case FontWeightEnum.W600:
case FontWeightEnum.W700:
case FontWeightEnum.W800:
case FontWeightEnum.W900:
fs |= System.Drawing.FontStyle.Bold;
break;
default:
break;
}
drawFont = new System.Drawing.Font(StyleInfo.GetFontFamily(si.FontFamilyFull), si.FontSize, fs);
drawFormat = new System.Drawing.StringFormat();
drawFormat.Alignment = System.Drawing.StringAlignment.Near;
// Measure string
// pt.NoClip indicates that this was generated by PageTextHtml Build. It has already word wrapped.
if (pt.NoClip || pt.SI.WritingMode == WritingModeEnum.tb_rl) // TODO: support multiple lines for vertical text
{
ms = MeasureString(s, g, drawFont, drawFormat);
width = new float[1];
width[0] = RSize.PointsFromPixels(g, ms.Width); // convert to points from pixels
sa = new string[1];
sa[0] = s;
return(sa);
}
// handle multiple lines;
// 1) split the string into the forced line breaks (ie "\n and \r")
// 2) foreach of the forced line breaks; break these into words and recombine
s = s.Replace("\r\n", "\n"); // don't want this to result in double lines
string[] flines = s.Split(lineBreak);
List <string> lines = new List <string>();
List <float> lineWidths = new List <float>();
// remove the size reserved for left and right padding
float ptWidth = pt.W - pt.SI.PaddingLeft - pt.SI.PaddingRight;
if (ptWidth <= 0)
{
ptWidth = 1;
}
foreach (string tfl in flines)
{
string fl;
if (tfl.Length > 0 && tfl[tfl.Length - 1] == ' ')
{
fl = tfl.TrimEnd(' ');
}
else
{
fl = tfl;
}
// Check if entire string fits into a line
ms = MeasureString(fl, g, drawFont, drawFormat);
float tw = RSize.PointsFromPixels(g, ms.Width);
if (tw <= ptWidth)
{ // line fits don't need to break it down further
lines.Add(fl);
lineWidths.Add(tw);
continue;
}
// Line too long; need to break into multiple lines
// 1) break line into parts; then build up again keeping track of word positions
string[] parts = fl.Split(wordBreak); // this is the maximum split of lines
StringBuilder sb = new StringBuilder(fl.Length);
System.Drawing.CharacterRange[] cra = new System.Drawing.CharacterRange[parts.Length];
for (int i = 0; i < parts.Length; i++)
{
int sc = sb.Length; // starting character
sb.Append(parts[i]); // endding character
if (i != parts.Length - 1) // last item doesn't need blank
{
sb.Append(" ");
}
int ec = sb.Length;
System.Drawing.CharacterRange cr = new System.Drawing.CharacterRange(sc, ec - sc);
cra[i] = cr; // add to character array
}
// 2) Measure the word locations within the line
string wfl = sb.ToString();
WordStartFinish[] wordLocations = MeasureString(wfl, g, drawFont, drawFormat, cra);
if (wordLocations == null)
{
continue;
}
// 3) Loop thru creating new lines as needed
int startLoc = 0;
System.Drawing.CharacterRange crs = cra[startLoc];
System.Drawing.CharacterRange cre = cra[startLoc];
float cwidth = wordLocations[0].end; // length of the first
float bwidth = wordLocations[0].start; // characters need a little extra on start
string ts;
bool bLine = true;
for (int i = 1; i < cra.Length; i++)
{
cwidth = wordLocations[i].end - wordLocations[startLoc].start + bwidth;
if (cwidth > ptWidth)
{ // time for a new line
cre = cra[i - 1];
ts = wfl.Substring(crs.First, cre.First + cre.Length - crs.First);
lines.Add(ts);
lineWidths.Add(wordLocations[i - 1].end - wordLocations[startLoc].start + bwidth);
// Find the first non-blank character of the next line
while (i < cra.Length &&
cra[i].Length == 1 &&
fl[cra[i].First] == ' ')
{
i++;
}
if (i < cra.Length) // any lines left?
{ // yes, continue on
startLoc = i;
crs = cre = cra[startLoc];
cwidth = wordLocations[i].end - wordLocations[startLoc].start + bwidth;
}
else // no, we can stop
{
bLine = false;
}
// bwidth = wordLocations[startLoc].start - wordLocations[startLoc - 1].end;
}
else
{
cre = cra[i];
}
}
if (bLine)
{
ts = fl.Substring(crs.First, cre.First + cre.Length - crs.First);
lines.Add(ts);
lineWidths.Add(cwidth);
}
}
// create the final array from the Lists
string[] la = lines.ToArray();
width = lineWidths.ToArray();
return(la);
}
finally
{
if (drawFont != null)
{
drawFont.Dispose();
}
if (drawFormat != null)
{
drawFont.Dispose();
}
}
}
private CharacterRange(System.Drawing.CharacterRange characterRange)
{
WrappedCharacterRange = characterRange;
}
