public static CharacterInfo Parse(XElement xElement)
{
CharacterInfo cInfo = new CharacterInfo();
cInfo.xoffset = int.Parse(xElement.Attribute(strXOffset).Value);
cInfo.yoffset = int.Parse(xElement.Attribute(strYOffset).Value);
cInfo.width = int.Parse(xElement.Attribute(strWidth).Value);
cInfo.height = int.Parse(xElement.Attribute(strHeight).Value);
return cInfo;
}
/// <summary>
/// 根据<paramref name="firstChar"/>等信息获取要制作的贴图的宽高和各个字形的位置信息。
/// </summary>
/// <param name="face"></param>
/// <param name="fontHeight"></param>
/// <param name="firstChar"></param>
/// <param name="lastChar"></param>
/// <param name="maxTextureWidth"></param>
/// <param name="charInfoDict"></param>
/// <param name="textureWidth"></param>
/// <param name="textureHeight"></param>
private static void GetTextureBlueprint(FreeTypeFace face, int fontHeight, int maxTextureWidth,
char firstChar, char lastChar,
out Dictionary<char, CharacterInfo> charInfoDict, out int textureWidth, out int textureHeight)
{
charInfoDict = new Dictionary<char, CharacterInfo>();
textureWidth = 0;
textureHeight = fontHeight;
int glyphXOffset = 0;
int glyphYOffset = 0;
for (char c = firstChar; c <= lastChar; c++)
{
FreeTypeBitmapGlyph glyph = new FreeTypeBitmapGlyph(face, c, fontHeight);
bool zeroSize = (glyph.obj.bitmap.rows == 0 && glyph.obj.bitmap.width == 0);
{
bool zeroBuffer = glyph.obj.bitmap.buffer == IntPtr.Zero;
if (zeroSize && (!zeroBuffer)) { throw new Exception(); }
if ((!zeroSize) && zeroBuffer) { throw new Exception(); }
}
int glyphWidth = glyph.obj.bitmap.width;
int glyphHeight = glyph.obj.bitmap.rows;
if (c == ' ' && zeroSize)// 空格需要特殊处理
{
zeroSize = false;
FreeTypeBitmapGlyph tabGlyph = new FreeTypeBitmapGlyph(face, '\t', fontHeight);
glyphWidth = tabGlyph.obj.bitmap.width / 8;
if (glyphWidth < 1) { glyphWidth = fontHeight / 2; }
glyphHeight = tabGlyph.obj.bitmap.rows;
//if (glyphHeight < 1) { glyphHeight = 1; }
}
else if (c == '\t' && zeroSize)// tab可能需要特殊处理
{
zeroSize = false;
glyphWidth = glyph.obj.bitmap.width;
if (glyphWidth < 1) { glyphWidth = fontHeight * 2; }
glyphHeight = glyph.obj.bitmap.rows;
//if (glyphHeight < 1) { glyphHeight = 1; }
}
if (!zeroSize)
{
if (glyphXOffset + glyphWidth + 1 <= maxTextureWidth)
{
textureWidth = Math.Max(textureWidth, glyphXOffset + glyphWidth + 1);
}
else// 此字形将超出最大宽度，所以要换行。
{
textureHeight += fontHeight;
glyphXOffset = 0;
glyphYOffset = textureHeight - fontHeight;
}
CharacterInfo cInfo = new CharacterInfo();
cInfo.xoffset = glyphXOffset; cInfo.yoffset = glyphYOffset;
cInfo.width = glyphWidth; cInfo.height = glyphHeight;
charInfoDict.Add(c, cInfo);
glyphXOffset += glyphWidth + 1;
}
if (c == char.MaxValue) { break; }
}
}
/// <summary>
/// 根据<paramref name="firstChar"/>等信息获取要制作的贴图的宽高和各个字形的位置信息。
/// </summary>
/// <param name="face"></param>
/// <param name="fontHeight"></param>
/// <param name="firstChar"></param>
/// <param name="lastChar"></param>
/// <param name="maxTextureWidth"></param>
/// <param name="charInfoDict"></param>
/// <param name="textureWidth"></param>
/// <param name="textureHeight"></param>
private static IEnumerable<TTFTextureYeildingState> GetTextureBlueprint(
FreeTypeFace face, int fontHeight, int maxTextureWidth, char firstChar, char lastChar)
{
int count = lastChar - firstChar;
int index = 0;
var charInfoDict = new Dictionary<char, CharacterInfo>();
int textureWidth = 0;
int textureHeight = fontHeight;
int glyphXOffset = 0;
int glyphYOffset = 0;
for (char c = firstChar; c <= lastChar; c++)
{
FreeTypeBitmapGlyph glyph = new FreeTypeBitmapGlyph(face, c, fontHeight);
{
var rect = glyph.glyphRec;
var glyphChar = glyph.glyphChar;
var left = glyph.obj.left;
var top = glyph.obj.top;
var x = glyph.obj.root.advance.x >> 6;
var y = glyph.obj.root.advance.y >> 6;
var clazz = glyph.obj.root.clazz;
var format = glyph.obj.root.format;
var library = glyph.obj.root.library;
var num_grays = glyph.obj.bitmap.num_grays;
var palette = glyph.obj.bitmap.palette;
var palette_mode = glyph.obj.bitmap.palette_mode;
var pitch = glyph.obj.bitmap.pitch;
var pixel_mode = glyph.obj.bitmap.pixel_mode;
}
bool zeroSize = (glyph.obj.bitmap.rows == 0 && glyph.obj.bitmap.width == 0);
{
bool zeroBuffer = glyph.obj.bitmap.buffer == IntPtr.Zero;
if (zeroSize && (!zeroBuffer)) { throw new Exception(); }
if ((!zeroSize) && zeroBuffer) { throw new Exception(); }
}
int glyphWidth = glyph.obj.bitmap.width;
int glyphHeight = glyph.obj.bitmap.rows;
if (c == ' ' && zeroSize)// 空格需要特殊处理
{
zeroSize = false;
FreeTypeBitmapGlyph tabGlyph = new FreeTypeBitmapGlyph(face, ' ', fontHeight);
glyphWidth = tabGlyph.obj.bitmap.width / 8;
if (glyphWidth < 1) { glyphWidth = fontHeight / 3; }
glyphHeight = tabGlyph.obj.bitmap.rows;
if (glyphHeight < 1) { glyphHeight = 1; }
}
else if (c == '\t' && zeroSize)// tab可能需要特殊处理
{
zeroSize = false;
glyphWidth = glyph.obj.bitmap.width;
if (glyphWidth < 1) { glyphWidth = fontHeight * 2; }
glyphHeight = glyph.obj.bitmap.rows;
if (glyphHeight < 1) { glyphHeight = 1; }
}
if (!zeroSize)
{
if (glyphXOffset + glyphWidth + 1 <= maxTextureWidth)
{
textureWidth = Math.Max(textureWidth, glyphXOffset + glyphWidth + 1);
}
else// 此字形将超出最大宽度，所以要换行。
{
textureHeight += fontHeight;
glyphXOffset = 0;
glyphYOffset = textureHeight - fontHeight;
}
CharacterInfo cInfo = new CharacterInfo();
cInfo.xoffset = glyphXOffset; cInfo.yoffset = glyphYOffset;
cInfo.width = glyphWidth; cInfo.height = glyphHeight;
charInfoDict.Add(c, cInfo);
glyphXOffset += glyphWidth + 1;
}
if (c == char.MaxValue) { break; }
yield return new TTFTextureYeildingState()
{
percent = index++ * 100 / count,
//message = "generating blueprint",
message = "blueprint",
};
}
yield return new TTFTextureYeildingState()
{
percent = index++ * 100 / count,
dict = charInfoDict,
textureWidth = textureWidth,
textureHeight = textureHeight,
message = "blueprint done",
};
}