|
public static EmptyAlphaPixel ( |
||
| bitmapData | ||
| px | int | |
| py | int | |
| alphaEmptyPixelTolerance | byte | |
| return | bool | |
private static void RetargetGlyphRectangleInwards(BitmapData bitmapData, QFontGlyph glyph, bool setYOffset, byte alphaTolerance)
{
int startX, endX;
int startY, endY;
var rect = glyph.rect;
EmptyDel emptyPix;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
emptyPix = delegate(BitmapData data, int x, int y) { return QBitmap.EmptyAlphaPixel(data, x, y, alphaTolerance); };
else
emptyPix = delegate(BitmapData data, int x, int y) { return QBitmap.EmptyPixel(data, x, y); };
unsafe
{
for (startX = rect.X; startX < bitmapData.Width; startX++)
for (int j = rect.Y; j < rect.Y + rect.Height; j++)
if (!emptyPix(bitmapData, startX, j))
goto Done1;
Done1:
for (endX = rect.X + rect.Width; endX >= 0; endX--)
for (int j = rect.Y; j < rect.Y + rect.Height; j++)
if (!emptyPix(bitmapData, endX, j))
goto Done2;
Done2:
for (startY = rect.Y; startY < bitmapData.Height; startY++)
for (int i = startX; i < endX; i++)
if (!emptyPix(bitmapData, i, startY))
goto Done3;
Done3:
for (endY = rect.Y + rect.Height; endY >= 0; endY--)
for (int i = startX; i < endX; i++)
if (!emptyPix(bitmapData, i, endY))
goto Done4;
Done4:;
}
if (endY < startY)
startY = endY = rect.Y;
if (endX < startX)
startX = endX = rect.X;
glyph.rect = new Rectangle(startX, startY, endX - startX + 1, endY - startY + 1);
if (setYOffset)
glyph.yOffset = glyph.rect.Y;
}
/// <summary>
/// Calculates the kerning values for the given character set
/// </summary>
/// <param name="charSet">The character set to calculate kerning values for</param>
/// <param name="glyphs">The glyphs used for kerning</param>
/// <param name="bitmapPages">The bitmap pages of the glyphs</param>
/// <param name="config">The kerning configuration</param>
/// <param name="font">The <see cref="IFont"/> used to create the glyphs and bitmaps</param>
/// <returns>A <see cref="Dictionary{TKey,TValue}"/> mapping of every glyph pair to a kerning amount</returns>
public static Dictionary <string, int> CalculateKerning(char[] charSet, QFontGlyph[] glyphs, List <QBitmap> bitmapPages, QFontKerningConfiguration config, IFont font = null)
{
var kerningPairs = new Dictionary <string, int>();
//we start by computing the index of the first and last non-empty pixel in each row of each glyph
XLimits[][] limits = new XLimits[charSet.Length][];
int maxHeight = 0;
for (int n = 0; n < charSet.Length; n++)
{
var rect = glyphs[n].Rect;
var page = bitmapPages[glyphs[n].Page];
limits[n] = new XLimits[rect.Height + 1];
maxHeight = Math.Max(rect.Height, maxHeight);
int yStart = rect.Y;
int yEnd = rect.Y + rect.Height;
int xStart = rect.X;
int xEnd = rect.X + rect.Width;
for (int j = yStart; j <= yEnd; j++)
{
int last = xStart;
bool yetToFindFirst = true;
for (int i = xStart; i <= xEnd; i++)
{
if (!QBitmap.EmptyAlphaPixel(page.BitmapData, i, j, config.AlphaEmptyPixelTolerance))
{
if (yetToFindFirst)
{
limits[n][j - yStart].Min = i - xStart;
yetToFindFirst = false;
}
last = i;
}
}
limits[n][j - yStart].Max = last - xStart;
if (yetToFindFirst)
{
limits[n][j - yStart].Min = xEnd - 1;
}
}
}
//we now bring up each row to the max (or min) of it's two adjacent rows, this is to stop glyphs sliding together too closely
var tmp = new XLimits[maxHeight + 1];
for (int n = 0; n < charSet.Length; n++)
{
//clear tmp
for (int j = 0; j < limits[n].Length; j++)
{
tmp[j] = limits[n][j];
}
for (int j = 0; j < limits[n].Length; j++)
{
if (j != 0)
{
tmp[j].Min = Math.Min(limits[n][j - 1].Min, tmp[j].Min);
tmp[j].Max = Math.Max(limits[n][j - 1].Max, tmp[j].Max);
}
if (j != limits[n].Length - 1)
{
tmp[j].Min = Math.Min(limits[n][j + 1].Min, tmp[j].Min);
tmp[j].Max = Math.Max(limits[n][j + 1].Max, tmp[j].Max);
}
}
for (int j = 0; j < limits[n].Length; j++)
{
limits[n][j] = tmp[j];
}
}
// For each character in the character set,
// combine it with every other character and add it to the kerning pair dictionary
for (int i = 0; i < charSet.Length; i++)
{
for (int j = 0; j < charSet.Length; j++)
{
kerningPairs.Add("" + charSet[i] + charSet[j], Kerning(glyphs[i], glyphs[j], limits[i], limits[j], config, font));
}
}
return(kerningPairs);
}
public static Dictionary <String, int> CalculateKerning(char[] charSet, QFontGlyph[] glyphs, List <QBitmap> bitmapPages, QFontKerningConfiguration config)
{
var kerningPairs = new Dictionary <String, int>();
//we start by computing the index of the first and last non-empty pixel in each row of each glyph
XLimits[][] limits = new XLimits[charSet.Length][];
int maxHeight = 0;
for (int n = 0; n < charSet.Length; n++)
{
var rect = glyphs[n].rect;
var page = bitmapPages[glyphs[n].page];
limits[n] = new XLimits[rect.Height];
maxHeight = Math.Max(rect.Height, maxHeight);
int yStart = rect.Y;
int yEnd = rect.Y + rect.Height;
int xStart = rect.X;
int xEnd = rect.X + rect.Width;
for (int j = yStart; j < yEnd; j++)
{
int last = xStart;
bool yetToFindFirst = true;
for (int i = xStart; i < xEnd; i++)
{
if (!QBitmap.EmptyAlphaPixel(page.bitmapData, i, j, config.alphaEmptyPixelTolerance))
{
if (yetToFindFirst)
{
limits[n][j - yStart].Min = i - xStart;
yetToFindFirst = false;
}
last = i;
}
}
limits[n][j - yStart].Max = last - xStart;
if (yetToFindFirst)
{
limits[n][j - yStart].Min = xEnd - 1;
}
}
}
//we now bring up each row to the max (or min) of it's two adjacent rows, this is to stop glyphs sliding together too closely
var tmp = new XLimits[maxHeight];
for (int n = 0; n < charSet.Length; n++)
{
//clear tmp
for (int j = 0; j < limits[n].Length; j++)
{
tmp[j] = limits[n][j];
}
for (int j = 0; j < limits[n].Length; j++)
{
if (j != 0)
{
tmp[j].Min = Math.Min(limits[n][j - 1].Min, tmp[j].Min);
tmp[j].Max = Math.Max(limits[n][j - 1].Max, tmp[j].Max);
}
if (j != limits[n].Length - 1)
{
tmp[j].Min = Math.Min(limits[n][j + 1].Min, tmp[j].Min);
tmp[j].Max = Math.Max(limits[n][j + 1].Max, tmp[j].Max);
}
}
for (int j = 0; j < limits[n].Length; j++)
{
limits[n][j] = tmp[j];
}
}
//поправил сам
if (config.KerningPairs == null)
{
for (int i = 0; i < charSet.Length; i++)
{
for (int j = 0; j < charSet.Length; j++)
{
kerningPairs.Add("" + charSet[i] + charSet[j], 1 - Kerning(glyphs[i], glyphs[j], limits[i], limits[j], config));
}
}
}
else
{
var chatSetList = charSet.ToList();
var indices = config.KerningPairs.Select(x => Tuple.Create(chatSetList.IndexOf(x[0]), chatSetList.IndexOf(x[1]))).ToList();
foreach (var pair in indices)
{
int i = pair.Item1;
int j = pair.Item2;
kerningPairs.Add("" + charSet[i] + charSet[j], 1 - Kerning(glyphs[i], glyphs[j], limits[i], limits[j], config));
}
}
return(kerningPairs);
}
private static void RetargetGlyphRectangleOutwards(BitmapData bitmapData, QFontGlyph glyph, bool setYOffset, byte alphaTolerance)
{
int startX, endX;
int startY, endY;
var rect = glyph.rect;
EmptyDel emptyPix;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
{
emptyPix = delegate(BitmapData data, int x, int y) { return(QBitmap.EmptyAlphaPixel(data, x, y, alphaTolerance)); }
}
;
else
{
emptyPix = delegate(BitmapData data, int x, int y) { return(QBitmap.EmptyPixel(data, x, y)); }
};
unsafe
{
for (startX = rect.X; startX >= 0; startX--)
{
bool foundPix = false;
for (int j = rect.Y; j <= rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, startX, j))
{
foundPix = true;
break;
}
}
if (!foundPix)
{
startX++;
break;
}
}
for (endX = rect.X + rect.Width; endX < bitmapData.Width; endX++)
{
bool foundPix = false;
for (int j = rect.Y; j <= rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, endX, j))
{
foundPix = true;
break;
}
}
if (!foundPix)
{
endX--;
break;
}
}
for (startY = rect.Y; startY >= 0; startY--)
{
bool foundPix = false;
for (int i = startX; i <= endX; i++)
{
if (!emptyPix(bitmapData, i, startY))
{
foundPix = true;
break;
}
}
if (!foundPix)
{
startY++;
break;
}
}
for (endY = rect.Y + rect.Height; endY < bitmapData.Height; endY++)
{
bool foundPix = false;
for (int i = startX; i <= endX; i++)
{
if (!emptyPix(bitmapData, i, endY))
{
foundPix = true;
break;
}
}
if (!foundPix)
{
endY--;
break;
}
}
}
glyph.rect = new Rectangle(startX, startY, endX - startX + 1, endY - startY + 1);
if (setYOffset)
{
glyph.yOffset = glyph.rect.Y;
}
}
private static void RetargetGlyphRectangleInwards(BitmapData bitmapData, QFontGlyph glyph, bool setYOffset)
{
int startX, endX;
int startY, endY;
var rect = glyph.rect;
EmptyDel emptyPix;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
{
emptyPix = delegate(BitmapData data, int x, int y) { return(QBitmap.EmptyAlphaPixel(data, x, y)); }
}
;
else
{
emptyPix = delegate(BitmapData data, int x, int y) { return(QBitmap.EmptyPixel(data, x, y)); }
};
unsafe
{
for (startX = rect.X; startX < bitmapData.Width; startX++)
{
for (int j = rect.Y; j <= rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, startX, j))
{
goto Done1;
}
}
}
Done1:
for (endX = rect.X + rect.Width; endX >= 0; endX--)
{
for (int j = rect.Y; j <= rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, endX, j))
{
goto Done2;
}
}
}
Done2:
for (startY = rect.Y; startY < bitmapData.Height; startY++)
{
for (int i = startX; i <= endX; i++)
{
if (!emptyPix(bitmapData, i, startY))
{
goto Done3;
}
}
}
Done3:
for (endY = rect.Y + rect.Height; endY >= 0; endY--)
{
for (int i = startX; i <= endX; i++)
{
if (!emptyPix(bitmapData, i, endY))
{
goto Done4;
}
}
}
Done4 :;
}
glyph.rect = new Rectangle(startX, startY, endX - startX + 1, endY - startY + 1);
if (setYOffset)
{
glyph.yOffset = glyph.rect.Y;
}
}