private static bool GetTextBounds(GlyphTypeface glyphTypeface, double fontSize, out double topDistance, out double bottomDistance)
{
string testCharacters = "aA. ÅÄÖÃÂ_[]{}()|ygf";
topDistance = double.MaxValue;
bottomDistance = double.MinValue;
for (int n = 0; n < testCharacters.Length; n++)
{
if (glyphTypeface.CharacterToGlyphMap.TryGetValue(testCharacters[n], out ushort glyphIndex))
{
Geometry outline = glyphTypeface.GetGlyphOutline(glyphIndex, fontSize, 0);
topDistance = Math.Min(topDistance, outline.Bounds.Top);
bottomDistance = Math.Max(bottomDistance, outline.Bounds.Bottom);
}
}
if (bottomDistance == double.MinValue)
{
return(false);
}
topDistance = Math.Abs(topDistance);
return(true);
}
/*
* PathGeometry pg = m_libCmn.GetFontPathGeometry("あ", 20.0, "HGP白洲太楷書体");
* // "ＭＳ 明朝");
* // "ＤＦ平成ゴシック体W9");
* // "ヒラギノ特太行書");
*/
public ClsFontPathGeometry GetFontPathGeometry(string str, double fontsize, string fontname)
{
char ch;
Uri uri;
ushort glyphIndex;
Typeface typeFace;
GlyphTypeface gt;
Geometry gm;
ClsFontPathGeometry clsFGP;
string name, fontkey;
int max, idx;
ch = Convert.ToChar(str);
m_dFontSize = fontsize;
typeFace = new Typeface(fontname);
RegistryKey regkey =
Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\Windows NT\CurrentVersion\Fonts", false);
string[] keys = regkey.GetValueNames();
fontkey = "";
max = keys.Length;
for (idx = 0; idx < max; idx++)
{
if (keys[idx].Contains(fontname) == true)
{
fontkey = keys[idx];
break;
}
}
if (fontkey == "")
{
FontFamily fm = new FontFamily(fontname);
// fm.FamilyNames.TryGetValue(XmlLanguage.GetLanguage("en-us"), out name);
name = fm.FamilyNames.Values.ToList()[0];
for (idx = 0; idx < max; idx++)
{
if (keys[idx].Contains(name) == true)
{
fontkey = keys[idx];
break;
}
}
}
string ttname = (string)regkey.GetValue(fontkey);
uri = new Uri("C:\\Windows\\Fonts\\" + ttname);
//uri = new Uri(fontpath);
gt = new GlyphTypeface(uri);
gt.CharacterToGlyphMap.TryGetValue((int)ch, out glyphIndex);
gm = gt.GetGlyphOutline(glyphIndex, fontsize, fontsize);
clsFGP = new ClsFontPathGeometry();
clsFGP.pg = gm.GetOutlinedPathGeometry();
clsFGP.dMoveY = (gt.Baseline) * fontsize;
return(clsFGP);
}
public static System.Drawing.Bitmap GetBitmapOfChar(GlyphTypeface gt, _
char c, _
double ptSize, _
float dpi)
{
ushort ci = 0;
if (!gt.CharacterToGlyphMap.TryGetValue(Strings.AscW(c), ci))
{
if (!gt.CharacterToGlyphMap.TryGetValue(Strings.Asc(c), ci))
{
return(null);
}
}
Geometry geo = gt.GetGlyphOutline(ci, ptSize, ptSize);
GeometryDrawing gDrawing = new GeometryDrawing(System.Windows.Media.Brushes.Black, null, geo);
DrawingImage geoImage = new DrawingImage(gDrawing);
geoImage.Freeze();
DrawingVisual viz = new DrawingVisual();
DrawingContext dc = viz.RenderOpen;
dc.DrawImage(geoImage, new Rect(0, 0, geoImage.Width, geoImage.Height));
dc.Close();
RenderTargetBitmap bmp = new RenderTargetBitmap(geoImage.Width, _
geoImage.Height, _
dpi, dpi, _
PixelFormats.Pbgra32);
bmp.Render(viz);
PngBitmapEncoder enc = new PngBitmapEncoder();
enc.Frames.Add(BitmapFrame.Create(bmp));
MemoryStream ms = new MemoryStream();
enc.Save(ms);
ms.Seek(0, SeekOrigin.Begin);
enc = null;
dc = null;
viz = null;
DisposeBitmap(bmp);
System.Drawing.Bitmap gdiBMP = new System.Drawing.Bitmap(ms);
ms.Dispose();
//gdiBMP.Save("c:\test.png", System.Drawing.Imaging.ImageFormat.Png)
return(gdiBMP);
}
static void Main(string[] args)
{
string fontPath = @"C:\Users\zhdon\Desktop\lsu.ttf";
Uri fontUri = new Uri(fontPath);
GlyphTypeface gt = new GlyphTypeface(fontUri);
WriteLine("FONT_METRICS.glyphCount = {0}", gt.GlyphCount);
WriteLine("FONT_METRICS.baseline = {0}", gt.Baseline);
WriteLine("FONT_METRICS.capsHeight = {0}", gt.CapsHeight);
WriteLine("FONT_METRICS.xHeight = {0}", gt.XHeight);
WriteLine("FONT_METRICS.height = {0}", gt.Height);
WriteLine("FONT_METRICS.glyphs = {0}", "GLYPHS");
foreach (var kvp in gt.CharacterToGlyphMap)
{
var code = kvp.Key;
var c = char.ConvertFromUtf32(code);
var i = kvp.Value;
const double em = 18;
var g = gt.GetGlyphOutline(i, em, em);
var width = (g.Bounds.Right - g.Bounds.Left) / em;
var ascent = (0 - g.Bounds.Top) / em;
var descent = g.Bounds.Bottom / em;
if (double.IsInfinity(ascent) || double.IsInfinity(descent))
{
continue;
}
WriteLine("GLYPHS[{0}] = Glyph('{1}', '{2}', {3}, {4}, {5}, {6}, {7})",
code,
c != "'" && c != "\\" ? c : "\\" + c,
UnicodeInfo.GetName(code).ToLower(),
gt.AdvanceWidths[i],
descent,
ascent,
gt.LeftSideBearings[i],
gt.RightSideBearings[i]);
}
Pause();
}
static void Main(string[] args)
{
List <string> charLines = new List <string>();
DirectoryInfo d = new DirectoryInfo(@"D:\MachineLearning\Document Layout Analysis\Fonts");
List <FileInfo> Files = d.GetFiles("*.ttc").ToList(); // ttf, fon, ttc // 'fon' doesn't work
Files.AddRange(d.GetFiles("*.ttf"));
foreach (var fontFile in Files)
{
Uri uri = new Uri(fontFile.FullName);
GlyphTypeface glyphTypeface = new GlyphTypeface(uri);
foreach (var unicodePair in unicodeChars)
{
//ScatterplotView view = new ScatterplotView();
//view.Dock = System.Windows.Forms.DockStyle.Fill;
//view.LinesVisible = true;
int indexUnicode = unicodePair.Key;
char unicode = unicodePair.Value;
if (!glyphTypeface.CharacterToGlyphMap.ContainsKey(indexUnicode))
{
continue;
}
var geometry = glyphTypeface.GetGlyphOutline(
glyphTypeface.CharacterToGlyphMap[indexUnicode],
100, 1);
var boundingBox = geometry.Bounds;
var stepX = boundingBox.Width / 8;
var stepY = boundingBox.Height / 8;
var blockArea = stepX * stepY;
List <int> data = new List <int>();
var path = geometry.GetFlattenedPathGeometry();
for (int j = 0; j < 8; j++)
{
for (int i = 0; i < 8; i++)
{
RectangleGeometry block = new RectangleGeometry(
new System.Windows.Rect(
new System.Windows.Point(boundingBox.X + i * stepX, boundingBox.Y + j * stepY),
new System.Windows.Point(boundingBox.X + (i + 1) * stepX, boundingBox.Y + (j + 1) * stepY)));
PathGeometry intersectionGeometry = PathGeometry.Combine(block, path, GeometryCombineMode.Intersect, null);
var area = Math.Round(intersectionGeometry.GetArea() / blockArea * 16, 0);
data.Add((int)area);
}
}
var dataStr = string.Join(",", data);
dataStr += "," + indexUnicode.ToString();
charLines.Add(dataStr);
/*var figures = path.Figures.ToList();
*
* var segments = figures.Select(f => f.Segments.ToList()).ToList();
*
* foreach (var group in segments)
* {
* foreach (var segment in group)
* {
* if (segment is PolyLineSegment polyLineSegment)
* {
* var points = polyLineSegment.Points.ToList();
* var x = points.Select(p => (p.X / (boundingBox.X + boundingBox.Width)) * 8.0).ToArray();
* var y = points.Select(p => -(p.Y / (boundingBox.Height)) * 8.0).ToArray();
*
* view.Graph.GraphPane.AddCurve(unicode.ToString(),
* x, y,
* System.Drawing.Color.Black);
*
* }
* else if (segment is ArcSegment arcSegment)
* {
* throw new NotImplementedException();
* }
* else if (segment is BezierSegment bezierSegment)
* {
* throw new NotImplementedException();
* }
* else if (segment is LineSegment lineSegment)
* {
* throw new NotImplementedException();
* }
* else if (segment is PolyBezierSegment polyBezierSegment)
* {
* throw new NotImplementedException();
* }
* else if (segment is PolyQuadraticBezierSegment polyQuadraticBezierSegment)
* {
* throw new NotImplementedException();
* }
* else if (segment is QuadraticBezierSegment quadraticBezierSegment)
* {
* throw new NotImplementedException();
* }
* else
* {
* throw new ArgumentException(segment.GetType().ToString());
* }
* }
* }*/
//view.Graph.GraphPane.AxisChange();
//var f1 = new System.Windows.Forms.Form();
//f1.Width = 1000;
//f1.Height = 1000;
//f1.Controls.Add(view);
//f1.ShowDialog();
}
}
File.WriteAllLines(@"D:\MachineLearning\Document Layout Analysis\Fonts\chars-train.csv", charLines);
}