int BdfFont::getCharWidth(uint32 chr) const {
// In case all font have the same advance value, we use the maximum.
if (!_data.advances)
return _data.maxAdvance;
const int ch = mapToIndex(chr);
// In case no mapping exists, we use the maximum advance.
if (ch < 0)
return _data.maxAdvance;
else
return _data.advances[ch];
}
void BdfFont::drawChar(Surface *dst, uint32 chr, const int tx, const int ty, const uint32 color) const {
assert(dst != 0);
// TODO: Where is the relation between the max advance being smaller or
// equal to 50 and the decision of the theme designer?
// asserting _data.maxAdvance <= 50: let the theme designer decide what looks best
assert(_data.maxAdvance <= 50);
assert(dst->getFormat().bytesPerPixel == 1 || dst->getFormat().bytesPerPixel == 2 || dst->getFormat().bytesPerPixel == 4);
const int idx = mapToIndex(chr);
if (idx < 0)
return;
int width, height, xOffset, yOffset;
// Get the bounding box of the character
if (!_data.boxes) {
width = _data.defaultBox.width;
height = _data.defaultBox.height;
xOffset = _data.defaultBox.xOffset;
yOffset = _data.defaultBox.yOffset;
} else {
width = _data.boxes[idx].width;
height = _data.boxes[idx].height;
xOffset = _data.boxes[idx].xOffset;
yOffset = _data.boxes[idx].yOffset;
}
int y = ty + _data.ascent - yOffset - height;
int x = tx + xOffset;
const byte *src = _data.bitmaps[idx];
const int bytesPerRow = (width + 7) / 8;
const int originalWidth = width;
// Make sure we do not draw outside the surface
if (y < 0) {
src -= y * bytesPerRow;
height += y;
y = 0;
}
if (y + height > dst->getHeight())
height = dst->getHeight() - y;
if (height <= 0)
return;
int xStart = 0;
if (x < 0) {
xStart = -x;
width += x;
x = 0;
}
if (x + width > dst->getWidth())
width = dst->getWidth() - x;
if (width <= 0)
return;
const int xEnd = xStart + width - 1;
byte *ptr = (byte *)dst->getBasePtr(x, y);
if (dst->getFormat().bytesPerPixel == 1)
drawCharIntern<byte>(ptr, dst->getPitch(), src, height, originalWidth, xStart, xEnd, color);
else if (dst->getFormat().bytesPerPixel == 2)
drawCharIntern<uint16>(ptr, dst->getPitch(), src, height, originalWidth, xStart, xEnd, color);
else if (dst->getFormat().bytesPerPixel == 4)
drawCharIntern<uint32>(ptr, dst->getPitch(), src, height, originalWidth, xStart, xEnd, color);
}
int QHeader::cellAt( int pos ) const
{
return mapToIndex( sectionAt(pos + offset()) );
}
