public int charWidth(char ch)
{
BDFGlyph g = font.getGlyph(ch);
if (g != null)
{
BDFParser.Rectangle r = g.getBbx();
r.width = (r.width + 1) & ~1;
return(r.width);
}
return(0);
}
public override void Render(Image im, BoundingBox clip, AffineTransform tx, string text, Vec2 loc, Pixel color)
{
if (text == null || text.Length == 0)
{
return;
}
int offset = 0,
x = 0, y = 0,
bdfFontDepth = bdfFont.getDepth(),
x_min = int.MaxValue,
y_min = int.MaxValue,
x_max = int.MinValue,
y_max = int.MinValue,
charsCount = text.Length,
fHeight, scan, fg_r, fg_g,
fg_b, bx, by, offsetLine,
fPixel, px, py, bg_r,
bg_g, bg_b, r, g, b
;
int[] fData;
Vec2 src, dst;
BDFParser.Rectangle glyph_box = new BDFParser.Rectangle();
BDFGlyph glyph;
Image img;
if ((bdfFont != null) && (charsCount > 0))
{
char[] chrs = text.ToCharArray();
int mH = 0;
int mY = 0;
int mxY = 0;
int tW = 0;
int tH = 0;
for (uint m = 0; m < text.Length; m++)
{
glyph = bdfFont.getGlyph(chrs[m]);
glyph_box = glyph.getBbx(glyph_box);
if (glyph_box.height > mH)
{
mH = glyph_box.height + 2;
}
if (glyph_box.y < mY)
{
mY = glyph_box.y;
}
if (glyph_box.y > mxY)
{
mxY = glyph_box.y;
}
tW += glyph_box.width + glyph_box.x + 2;
}
tH = mH + (mxY - mY);
y = mH + -mY;
img = new Image(tW, tH);
float f_max = (1 << bdfFontDepth) - 1;
if (f_max == 0)
{
f_max = 1;
}
glyph_box = new BDFParser.Rectangle();
src = new Vec2();
dst = new Vec2();
for (int i = 0; i < charsCount; i++)
{
glyph = bdfFont.getGlyph(chrs[i]);
if (glyph == null)
{
continue;
}
glyph_box = glyph.getBbx(glyph_box);
fHeight = glyph_box.height;
fData = glyph.getData();
scan = fData.Length / fHeight;
fg_r = color.R;
fg_g = color.G;
fg_b = color.B;
//box location
bx = x + offset + glyph_box.x;
by = y - fHeight - glyph_box.y;
for (int k = 0; k < fHeight; k++)
{
offsetLine = k * scan;
for (int j = 0; j < scan; j++)
{
fPixel = fData[offsetLine + j];
if (fPixel != 0)
{
//pixel location
px = bx + j;
py = by + k;
if (tx != null)
{
//src.setLocation(px, py);
//tx.transform(src, dst);
#warning TODO: Add support for this.
//px = dst.X;
//py = dst.Y;
}
//clip
if (clip == null || clip.Contains(px, py))
{
//compute color
Pixel bg_color = img.GetPixel((uint)px, (uint)py);
bg_r = bg_color.R;
bg_g = bg_color.G;
bg_b = bg_color.B;
//todo improve this pixel composition
float alpha = fPixel / f_max;
r = bg_r + ((int)((fg_r - bg_r) * alpha)) & 0xFF;
g = bg_g + ((int)((fg_g - bg_g) * alpha)) & 0xFF;
b = bg_b + ((int)((fg_b - bg_b) * alpha)) & 0xFF;
Pixel nw = new Pixel((byte)r, (byte)g, (byte)b, 255);
img.SetPixel((uint)px, (uint)py, nw);
if (x_min > px)
{
x_min = px;
}
if (y_min > py)
{
y_min = py;
}
if (x_max < px)
{
x_max = px;
}
if (y_max < py)
{
y_max = py;
}
}
}
}
}
offset += glyph.getDWidth().width;
}
//img = ImageManipulator.Resize(img, new Vec2(img.Width * 8, img.Height * 8), ImageManipulator.ScalingAlgorithm.Bicubic);
//img = ImageManipulator.Resize(img, Vec2.Zero, ImageManipulator.ScalingAlgorithm.Hq2x);
//img = ImageManipulator.Resize(img, Vec2.Zero, ImageManipulator.ScalingAlgorithm.Hq4x);
im.DrawImage(loc, img);
}
}