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Friendlier error message when UvFont fails due to permissions
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Cole Campbell committed Nov 8, 2014
1 parent b6616a0 commit 0d81587
Showing 1 changed file with 65 additions and 51 deletions.
116 changes: 65 additions & 51 deletions UvFont/Program.cs
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Original file line number Diff line number Diff line change
@@ -1,10 +1,11 @@
using System;
using System.Linq;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Drawing.Text;
using System.Linq;
using System.Runtime.InteropServices;
using System.Xml.Linq;
using TwistedLogik.Nucleus;

Expand All @@ -14,70 +15,83 @@ public class Program
{
public static void Main(String[] args)
{
FontGenerationParameters parameters;
try { parameters = new FontGenerationParameters(args); }
catch
try
{
Console.WriteLine("The syntax of this command is:");
Console.WriteLine();
Console.WriteLine("UVFONT fontname [-fontsize:emsize]");
return;
}
FontGenerationParameters parameters;
try { parameters = new FontGenerationParameters(args); }
catch
{
Console.WriteLine("The syntax of this command is:");
Console.WriteLine();
Console.WriteLine("UVFONT fontname [-fontsize:emsize]");
return;
}

var chars = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
var fontName = parameters.FontName;
var fontSize = parameters.FontSize;
var chars = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
var fontName = parameters.FontName;
var fontSize = parameters.FontSize;

var faces = new[]
{
new FontFaceInfo("Regular", new Font(fontName, fontSize, FontStyle.Regular)),
new FontFaceInfo("Bold", new Font(fontName, fontSize, FontStyle.Bold)),
new FontFaceInfo("Italic", new Font(fontName, fontSize, FontStyle.Italic)),
new FontFaceInfo("BoldItalic", new Font(fontName, fontSize, FontStyle.Bold | FontStyle.Italic)),
};
var faces = new[]
{
new FontFaceInfo("Regular", new Font(fontName, fontSize, FontStyle.Regular)),
new FontFaceInfo("Bold", new Font(fontName, fontSize, FontStyle.Bold)),
new FontFaceInfo("Italic", new Font(fontName, fontSize, FontStyle.Italic)),
new FontFaceInfo("BoldItalic", new Font(fontName, fontSize, FontStyle.Bold | FontStyle.Italic)),
};

if (faces.Select(x => x.Font).Where(x => !String.Equals(x.Name, fontName, StringComparison.CurrentCultureIgnoreCase)).Any())
{
Console.WriteLine("No font named '{0}' was found on this system.", fontName);
return;
}
fontName = parameters.FontName = faces.First().Font.Name;
if (faces.Select(x => x.Font).Where(x => !String.Equals(x.Name, fontName, StringComparison.CurrentCultureIgnoreCase)).Any())
{
Console.WriteLine("No font named '{0}' was found on this system.", fontName);
return;
}
fontName = parameters.FontName = faces.First().Font.Name;

foreach (var face in faces)
{
using (var fontSupersampled = new Font(fontName, fontSize * SupersampleFactor, face.Font.Style))
foreach (var face in faces)
{
var glyphs = CreateGlyphImages(fontSupersampled, chars);
var textureSize = Size.Empty;
var textureFits = CalculateTextureSize(glyphs, out textureSize);
if (!textureFits)
using (var fontSupersampled = new Font(fontName, fontSize * SupersampleFactor, face.Font.Style))
{
Console.WriteLine("The specified font won't fit within a 4096x4096 texture.");
return;
}
var glyphs = CreateGlyphImages(fontSupersampled, chars);
var textureSize = Size.Empty;
var textureFits = CalculateTextureSize(glyphs, out textureSize);
if (!textureFits)
{
Console.WriteLine("The specified font won't fit within a 4096x4096 texture.");
return;
}

face.Texture = GenerateFaceTexture(face.Font, glyphs, textureSize);
face.Texture = GenerateFaceTexture(face.Font, glyphs, textureSize);
}
}
}

var outputTextureSize = Size.Empty;
if (!WillFaceTexturesFitOnOutput(faces, out outputTextureSize))
{
Console.WriteLine("The specified font won't fit within a 4096x4096 texture.");
return;
}
var outputTextureSize = Size.Empty;
if (!WillFaceTexturesFitOnOutput(faces, out outputTextureSize))
{
Console.WriteLine("The specified font won't fit within a 4096x4096 texture.");
return;
}

using (var output = CombineFaceTextures(faces, outputTextureSize))
{
output.Save(GetFontTextureSafeName(parameters), ImageFormat.Png);
}
using (var output = CombineFaceTextures(faces, outputTextureSize))
{
output.Save(GetFontTextureSafeName(parameters), ImageFormat.Png);
}

Console.WriteLine("Generated {0}.", GetFontTextureSafeName(parameters));
Console.WriteLine("Generated {0}.", GetFontTextureSafeName(parameters));

var xml = GenerateXmlFontDefinition(parameters, faces, chars);
xml.Save(GetFontDefinitionSafeName(parameters));
var xml = GenerateXmlFontDefinition(parameters, faces, chars);
xml.Save(GetFontDefinitionSafeName(parameters));

Console.WriteLine("Generated {0}.", GetFontDefinitionSafeName(parameters));
Console.WriteLine("Generated {0}.", GetFontDefinitionSafeName(parameters));
}
catch (ExternalException ex)
{
if (ex.ErrorCode == unchecked((Int32)0x80004005))
{
Console.WriteLine("An error was raised by GDI+ during font generation.");
Console.WriteLine("Do you have permission to write to this folder?");
return;
}
throw;
}
}

private static Dictionary<String, String> ParseCommandLineArgs(IEnumerable<String> args)
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