public static void Run()
{
string dataDir = RunExamples.GetDataDir_Data();
//ExStart: 1
string fileName = dataDir + "courier.pfb"; //Font file name with full path
FontDefinition fd = new FontDefinition(FontType.Type1, new FontFileDefinition("pfb", new FileSystemStreamSource(fileName)));
Type1Font font = Aspose.Font.Font.Open(fd) as Type1Font;
bool latinText = true;
for (uint code = 65; code < 123; code++)
{
GlyphId gid = font.Encoding.DecodeToGid(code);
if (gid == null || gid == GlyphUInt32Id.NotDefId)
{
latinText = false;
}
}
if (latinText)
{
Console.WriteLine(string.Format("Font {0} supports latin symbols.", font.FontName));
}
else
{
Console.WriteLine(string.Format("Latin symbols are not supported by font {0}.", font.FontName));
}
//ExEnd: 1
}
public bool TryGetGlyphImage(Font font, int codepoint, out SubTexture texture, out ResourceHandle<Material> material)
{
material = textMaterial;
var glyphId = new GlyphId(font, codepoint);
if (glyphSubTextures.TryGetValue(glyphId, out texture))
return true;
var nativeFont = font.EngineFont.Resolve();
var imageHandle = nativeFont.CreateGlyphImage(codepoint, font.Size);
if (imageHandle.Id == ResourceHandle<Resource>.Invalid)
return false;
if (!textureAtlas.AddImage(imageHandle))
{
throw new Exception("Atlas full");
}
if (!textureAtlas.GetImageSubTexture(imageHandle, out texture))
return false;
glyphSubTextures.Add(glyphId, texture);
return true;
}
//Default constructor
public Glyph(GlyphId glyphId, string nName, int nVarargs, byte nArgs, string nSyntax, string nDesc)
{
Name = nName;
glyph = glyphId;
Id = (byte)glyph;
Varargs = nVarargs;
Args = nArgs;
Syntax = nSyntax;
Desc = nDesc;
}
public bool TryGetGlyphInfo(Font font,int codepoint, out Glyph glyph)
{
var glyphId = new GlyphId(font, codepoint);
if (glyphInfos.TryGetValue(glyphId, out glyph))
return true;
var nativeFont = font.EngineFont.Resolve();
if (!nativeFont.GetGlyphInfo(codepoint, font.Size, out glyph))
return false;
glyphInfos[glyphId] = glyph;
return true;
}
//ExEnd: 2
//ExStart: 3
static void DrawText(string text, IFont font, double fontSize,
Brush backgroundBrush, Brush textBrush, string outFile)
{
//Get glyph identifiers for every symbol in text line
GlyphId[] gids = new GlyphId[text.Length];
for (int i = 0; i < text.Length; i++)
{
gids[i] = font.Encoding.DecodeToGid(text[i]);
}
// set common drawing settings
double dpi = 300;
double resolutionCorrection = dpi / 72; // 72 is font's internal dpi
// prepare output bitmap
Bitmap outBitmap = new Bitmap(960, 720);
outBitmap.SetResolution((float)dpi, (float)dpi);
Graphics outGraphics = Graphics.FromImage(outBitmap);
outGraphics.FillRectangle(backgroundBrush, 0, 0, outBitmap.Width, outBitmap.Height);
outGraphics.SmoothingMode = SmoothingMode.HighQuality;
//declare coordinate variables and previous gid
GlyphId previousGid = null;
double glyphXCoordinate = 0;
double glyphYCoordinate = fontSize * resolutionCorrection;
//loop which paints every glyph in gids
foreach (GlyphId gid in gids)
{
// if the font contains the gid
if (gid != null)
{
Glyph glyph = font.GlyphAccessor.GetGlyphById(gid);
if (glyph == null)
{
continue;
}
// path that accepts drawing instructions
GraphicsPath path = new GraphicsPath();
// Create IGlyphOutlinePainter implementation
GlyphOutlinePainter outlinePainter = new GlyphOutlinePainter(path);
// Create the renderer
Aspose.Font.Renderers.IGlyphRenderer renderer = new
Aspose.Font.Renderers.GlyphOutlineRenderer(outlinePainter);
// get common glyph properties
double kerning = 0;
// get kerning value
if (previousGid != null)
{
kerning = (font.Metrics.GetKerningValue(previousGid, gid) /
glyph.SourceResolution) * fontSize * resolutionCorrection;
kerning += FontWidthToImageWith(font.Metrics.GetGlyphWidth(previousGid),
glyph.SourceResolution, fontSize);
}
// glyph positioning - increase glyph X coordinate according to kerning distance
glyphXCoordinate += kerning;
// Glyph placement matrix
TransformationMatrix glyphMatrix =
new TransformationMatrix(
new double[]
{
fontSize *resolutionCorrection,
0,
0,
// negative because of bitmap coordinate system begins from the top
-fontSize *resolutionCorrection,
glyphXCoordinate,
glyphYCoordinate
});
// render current glyph
renderer.RenderGlyph(font, gid, glyphMatrix);
// fill the path
path.FillMode = FillMode.Winding;
outGraphics.FillPath(textBrush, path);
}
//set current gid as previous to get correct kerning for next glyph
previousGid = gid;
}
//Save results
outBitmap.Save(outFile);
}
