/// <summary>
/// Measures the display rectangle of a single character.
/// </summary>
public static SizeF MeasureChar(Graphics g, IdeoFamily fam, char c, float size)
{
// TO-DO: actually invoke g.MeasureString for non-Hanzi characters
// I.e., regular and half-width alphabetical and digits
FontTray ftray = getFont(fam, IdeoScript.Simp, size, FontStyle.Regular);
return(new SizeF(ftray.DisplayWidth, ftray.DisplayHeight));
}
/// <summary>
/// Gets the font with the desired parameters for measuring or drawing text. Works from cache.
/// </summary>
private static FontTray getFont(IdeoFamily fam, IdeoScript script, float size, FontStyle style)
{
// If font's already in cache, great: use that.
FontCacheKey fck = new FontCacheKey(fam, script, size, style);
if (fontCache.ContainsKey(fck))
{
return(fontCache[fck]);
}
// First time someone request a font like this. Instantiate and cache it.
FontTray ftray = createFont(fam, script, size, style);
fontCache[fck] = ftray;
return(ftray);
}
/// <summary>
/// <para>Gets the size of a Hanzi's display rectangle, if using the font with the provided parameters.</para>
/// <para>Expensive (instantiates and destroys font).</para>
/// </summary>
public static SizeF GetCharSize(IdeoFamily fam, float size)
{
FontTray ftray = null;
try
{
// Font family and script do not matter
// Whole point of this class is to make sure the display rectangles
// for any family and script are standardized.
ftray = createFont(fam, IdeoScript.Simp, size, FontStyle.Regular);
return(new SizeF(ftray.DisplayWidth, ftray.DisplayHeight));
}
finally
{
ftray.Font.Dispose();
}
}
/// <summary>
/// Actually instantiates a specific font (based on family, script, size and style).
/// </summary>
private static FontTray createFont(IdeoFamily fam, IdeoScript script, float size, FontStyle style)
{
FontTray ftray = null;
float height = size * 4F / 3F;
height *= scale;
// If a system font is requested, instantiate
if (fam == IdeoFamily.WinKai)
{
if (script == IdeoScript.Simp)
{
ftray = new FontTray(
new Font(winFontNameSimp, size, style), 0, -0.05F,
height * 0.9F, height);
if (ftray.Font.Name != winFontNameSimp)
throw new Exception("Requested font not available: " + winFontNameSimp);
}
else
{
ftray = new FontTray(
new Font(winFontNameTrad, size, style), 0, -0.05F,
height * 0.9F, height);
if (ftray.Font.Name != winFontNameTrad)
throw new Exception("Requested font not available: " + winFontNameTrad);
}
return ftray;
}
// If a private font is requested, find font face in private collection and instantiate
foreach (FontFamily ff in fonts.Families)
{
if (fam == IdeoFamily.ArphicKai && script == IdeoScript.Trad && ff.Name == "AR PL UKai TW")
ftray = new FontTray(
new Font(ff, size, style), -0.08798828125F * height, -0.05F,
height * 0.9F, height);
// Alternative names below for name of HDZB_75: First shows up on Win8, second on Win7.
else if (fam == IdeoFamily.ArphicKai && script == IdeoScript.Simp && (ff.Name == "䡡湄楮札䍓ⵆ潮瑳" || ff.Name == "汉鼎简中楷"))
ftray = new FontTray(
new Font(ff, size, style), 0, -0.05F,
height * 0.9F, height);
else if (fam == IdeoFamily.Noto && script == IdeoScript.Trad && ff.Name == "Noto Sans T Chinese Light")
ftray = new FontTray(
new Font(ff, size * 0.85F, style), height * 0.075F, height * 0.025F,
height * 0.9F, height);
else if (fam == IdeoFamily.Noto && script == IdeoScript.Simp && ff.Name == "Noto Sans S Chinese Light")
ftray = new FontTray(
new Font(ff, size * 0.85F, style), height * 0.075F, height * 0.025F,
height * 0.9F, height);
if (ftray != null) break;
}
if (ftray == null) throw new Exception("Requested font not available.");
return ftray;
}
/// <summary>
/// Actually instantiates a specific font (based on family, script, size and style).
/// </summary>
private static FontTray createFont(IdeoFamily fam, IdeoScript script, float size, FontStyle style)
{
FontTray ftray = null;
float height = size * 4F / 3F;
height *= scale;
// If a system font is requested, instantiate
if (fam == IdeoFamily.WinKai)
{
if (script == IdeoScript.Simp)
{
ftray = new FontTray(
new Font(winFontNameSimp, size, style), 0, -0.05F,
height * 0.9F, height);
if (ftray.Font.Name != winFontNameSimp)
{
throw new Exception("Requested font not available: " + winFontNameSimp);
}
}
else
{
ftray = new FontTray(
new Font(winFontNameTrad, size, style), 0, -0.05F,
height * 0.9F, height);
if (ftray.Font.Name != winFontNameTrad)
{
throw new Exception("Requested font not available: " + winFontNameTrad);
}
}
return(ftray);
}
// If a private font is requested, find font face in private collection and instantiate
foreach (FontFamily ff in fonts.Families)
{
if (fam == IdeoFamily.ArphicKai && script == IdeoScript.Trad && ff.Name == "AR PL UKai TW")
{
ftray = new FontTray(
new Font(ff, size, style), -0.08798828125F * height, -0.05F,
height * 0.9F, height);
}
// Alternative names below for name of HDZB_75: First shows up on Win8, second on Win7.
else if (fam == IdeoFamily.ArphicKai && script == IdeoScript.Simp && (ff.Name == "䡡湄楮札䍓ⵆ潮瑳" || ff.Name == "汉鼎简中楷"))
{
ftray = new FontTray(
new Font(ff, size, style), 0, -0.05F,
height * 0.9F, height);
}
else if (fam == IdeoFamily.Noto && script == IdeoScript.Trad && ff.Name == "Noto Sans T Chinese Light")
{
ftray = new FontTray(
new Font(ff, size * 0.85F, style), height * 0.075F, height * 0.025F,
height * 0.9F, height);
}
else if (fam == IdeoFamily.Noto && script == IdeoScript.Simp && ff.Name == "Noto Sans S Chinese Light")
{
ftray = new FontTray(
new Font(ff, size * 0.85F, style), height * 0.075F, height * 0.025F,
height * 0.9F, height);
}
if (ftray != null)
{
break;
}
}
if (ftray == null)
{
throw new Exception("Requested font not available.");
}
return(ftray);
}
/// <summary>
/// Draws a Hanzi string in the desired font.
/// </summary>
public static void DrawString(Graphics g, string text, PointF loc, Brush b,
IdeoFamily fam, IdeoScript script, float size, FontStyle style)
{
// Font tray for requested font
FontTray ftray = getFont(fam, script, size, style);
// Substitute font - only for Arphic simplified
FontTray ftraySubst = null;
if (fam == IdeoFamily.ArphicKai && script == IdeoScript.Simp)
{
ftraySubst = getFont(fam, IdeoScript.Trad, size, style);
}
// Where to draw - font-specific adjustment
float x = loc.X;
float y = loc.Y;
// TO-DO: actually invoke g.MeasureString for non-Hanzi characters
// I.e., regular and half-width alphabetical and digits
StringFormat sf = StringFormat.GenericTypographic;
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
for (int i = 0; i != text.Length; ++i)
{
string chr = text.Substring(i, 1);
// Get coverage info about character
ArphicSimpCoverage asp = ArphicSimpCoverage.SimpCovers;
char c = chr[0];
bool tofu = false;
if (fam == IdeoFamily.ArphicKai)
{
tofu =
(script == IdeoScript.Trad && !cvrArphic.GetCoverage(c).HasFlag(FontCoverageFlags.Trad)) ||
(script == IdeoScript.Simp && (asp = getArphicCoverageSimp(c)) == ArphicSimpCoverage.None);
}
// Draw tofu is must be
if (tofu)
{
using (Pen p = new Pen(Color.Gray))
{
p.DashStyle = DashStyle.Dot;
g.SmoothingMode = SmoothingMode.None;
g.DrawRectangle(p, x, y, ftray.DisplayWidth, ftray.DisplayHeight);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.DrawLine(p, x, y, x + ftray.DisplayWidth, y + ftray.DisplayHeight);
g.DrawLine(p, x + ftray.DisplayWidth, y, x, y + ftray.DisplayHeight);
}
}
// Draw with substitute string
else if (asp == ArphicSimpCoverage.CanSubstitute)
{
g.DrawString(chr, ftraySubst.Font, b, new PointF(x + ftraySubst.HorizOfs, y + ftraySubst.VertOfs), sf);
}
// Draw with requested string
else
{
g.DrawString(chr, ftray.Font, b, new PointF(x + ftray.HorizOfs, y + ftray.VertOfs), sf);
}
x += ftray.DisplayWidth;
}
}