"Improved" TextRenderer （︶^︶）
This commit is contained in:
Michel Fedde
parent
f7dc2e24dc
commit
ff85180750
8 changed files with 247 additions and 126 deletions
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@ -1,6 +1,7 @@
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#region usings
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using System;
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using OpenTK;
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#endregion
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@ -13,23 +14,18 @@ namespace SM.Base.Drawing.Text
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public struct CharParameter
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{
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/// <summary>
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/// The position on the X-axis.
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/// The advance on the X-axis.
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/// </summary>
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public int X;
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public int Advance;
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public float BearingX;
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/// <summary>
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/// The width of the character.
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/// </summary>
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public float Width;
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/// <summary>
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/// The normalized position inside the texture.
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/// </summary>
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public float NormalizedX;
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/// <summary>
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/// The normalized width inside the texture.
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/// </summary>
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public float NormalizedWidth;
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public Matrix3 TextureMatrix;
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}
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}
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@ -1,138 +1,92 @@
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#region usings
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Drawing;
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using System.Drawing.Text;
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using OpenTK.Graphics.OpenGL4;
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using System.Drawing.Drawing2D;
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using System.Windows.Forms;
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using OpenTK;
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using SharpFont;
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using SM.Base.Textures;
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#endregion
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namespace SM.Base.Drawing.Text
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{
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/// <summary>
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/// Represents a font.
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/// </summary>
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public class Font : Texture
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{
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/// <summary>
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/// The char set for the font.
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/// <para>Default: <see cref="FontCharStorage.SimpleUTF8" /></para>
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/// </summary>
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public ICollection<char> CharSet = FontCharStorage.SimpleUTF8;
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private static Library _lib;
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/// <summary>
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/// The font family, that is used to find the right font.
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/// </summary>
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public FontFamily FontFamily;
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private Face _fontFace;
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/// <summary>
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/// The font size.
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/// <para>Default: 12</para>
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/// </summary>
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public float FontSize = 12;
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public float SpaceWidth { get; private set; } = 0;
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public float SpaceWidth { get; private set; }
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public ICollection<char> CharSet { get; set; } = FontCharStorage.SimpleUTF8;
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/// <summary>
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/// The font style.
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/// <para>Default: <see cref="System.Drawing.FontStyle.Regular" /></para>
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/// </summary>
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public FontStyle FontStyle = FontStyle.Regular;
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public float FontSize { get; set; } = 12;
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/// <summary>
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/// This contains all information for the different font character.
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/// </summary>
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public Dictionary<char, CharParameter> Positions = new Dictionary<char, CharParameter>();
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/// <summary>
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/// Generates a font from a font family from the specified path.
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/// </summary>
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/// <param name="path">The specified path</param>
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public Font(string path)
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{
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var pfc = new PrivateFontCollection();
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pfc.AddFontFile(path);
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FontFamily = pfc.Families[0];
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_lib ??= new Library();
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_fontFace = new Face(_lib, path);
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}
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/// <summary>
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/// Generates a font from a specified font family.
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/// </summary>
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/// <param name="font">Font-Family</param>
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public Font(FontFamily font)
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{
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FontFamily = font;
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}
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/// <inheritdoc />
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public override TextureWrapMode WrapMode { get; set; } = TextureWrapMode.ClampToEdge;
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/// <summary>
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/// Regenerates the texture.
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/// </summary>
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public void RegenerateTexture()
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{
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Width = 0;
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Height = 0;
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Width = Height = 0;
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Positions = new Dictionary<char, CharParameter>();
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_fontFace.SetCharSize(0, FontSize, 0, 96);
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var map = new Bitmap(1000, 20);
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var charParams = new Dictionary<char, float[]>();
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using (var f = new System.Drawing.Font(FontFamily, FontSize, FontStyle))
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var pos = new Dictionary<char, float[]>();
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foreach (char c in CharSet)
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{
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using (var g = Graphics.FromImage(map))
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_fontFace.LoadChar(c, LoadFlags.Render, LoadTarget.Normal);
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pos.Add(c, new []{(float)_fontFace.Glyph.Bitmap.Width, Width});
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Width += (int)_fontFace.Glyph.Advance.X + 5;
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Height = Math.Max(_fontFace.Glyph.Bitmap.Rows, Height);
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}
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_fontFace.LoadChar('_', LoadFlags.Render, LoadTarget.Normal);
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SpaceWidth = _fontFace.Glyph.Advance.X.ToSingle();
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float bBoxHeight = (Math.Abs(_fontFace.BBox.Bottom) + _fontFace.BBox.Top);
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float bBoxTopScale = _fontFace.BBox.Top / bBoxHeight;
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float baseline = Height * bBoxTopScale;
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Map = new Bitmap(Width, Height);
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using (Graphics g = Graphics.FromImage(Map))
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{
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g.Clear(Color.Transparent);
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foreach (var keyvalue in pos)
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{
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g.Clear(Color.Transparent);
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_fontFace.LoadChar(keyvalue.Key, LoadFlags.Render, LoadTarget.Normal);
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foreach (var c in CharSet)
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int y = ((int)baseline - (int)_fontFace.Glyph.Metrics.HorizontalBearingY);
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g.DrawImageUnscaled(_fontFace.Glyph.Bitmap.ToGdipBitmap(Color.White), (int)keyvalue.Value[1], y);
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Positions.Add(keyvalue.Key, new CharParameter()
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{
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var s = c.ToString();
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var size = g.MeasureString(s, f, 0, StringFormat.GenericTypographic);
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try
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{
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charParams.Add(c, new[] {size.Width, Width});
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}
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catch
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{
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// ignored
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}
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Advance = (int)_fontFace.Glyph.LinearHorizontalAdvance,
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BearingX = _fontFace.Glyph.BitmapLeft,
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if (Height < size.Height) Height = (int) size.Height;
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Width += (int) size.Width;
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}
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Width = keyvalue.Value[0],
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SpaceWidth = g.MeasureString("_", f, 0, StringFormat.GenericTypographic).Width;
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}
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map = new Bitmap(Width, Height);
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using (var g = Graphics.FromImage(map))
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{
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foreach (var keyValuePair in charParams)
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{
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var normalizedX = (keyValuePair.Value[1]) / Width;
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var normalizedWidth = keyValuePair.Value[0] / Width;
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CharParameter parameter;
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Positions.Add(keyValuePair.Key, parameter = new CharParameter
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{
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NormalizedWidth = normalizedWidth,
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NormalizedX = normalizedX,
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Width = keyValuePair.Value[0],
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X = (int) keyValuePair.Value[1]
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});
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g.DrawString(keyValuePair.Key.ToString(), f, Brushes.White, parameter.X, 0, StringFormat.GenericTypographic);
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}
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TextureMatrix = TextureTransformation.CalculateMatrix(new Vector2(keyvalue.Value[1] / Width, 0),
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new Vector2(keyvalue.Value[0] / Width, 1), 0),
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});
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}
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}
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Map = map;
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Recompile();
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Console.WriteLine();
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}
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/// <inheritdoc />
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public override void Compile()
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{
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RegenerateTexture();
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@ -40,7 +40,7 @@ namespace SM.Base.Drawing.Text
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/// The spacing between numbers.
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/// <para>Default: 1</para>
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/// </summary>
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public float Spacing = 1;
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public float Spacing = 1f;
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/// <summary>
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/// The font.
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@ -112,6 +112,7 @@ namespace SM.Base.Drawing.Text
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var _last = new CharParameter();
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for (var i = 0; i < _text.Length; i++)
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{
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if (_text[i] == ' ')
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{
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x += Font.SpaceWidth * Spacing;
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@ -136,16 +137,21 @@ namespace SM.Base.Drawing.Text
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throw new Exception("Font doesn't contain '" + _text[i] + "'");
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}
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if (i == 0)
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{
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x += parameter.Width / 2;
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}
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var matrix = Matrix4.CreateScale(parameter.Width, Font.Height, 1) *
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Matrix4.CreateTranslation(x, -y, 0);
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_instances[i] = new Instance
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{
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ModelMatrix = matrix,
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TextureMatrix = TextureTransformation.CalculateMatrix(new Vector2(parameter.NormalizedX, 0),
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new Vector2(parameter.NormalizedWidth, 1), 0)
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TextureMatrix = parameter.TextureMatrix
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};
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x += parameter.Width * Spacing;
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x += Math.Max(parameter.Advance, 6);
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_last = parameter;
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}
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