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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "lastexpress/data/font.h"
#include "common/stream.h"
#include "common/system.h"
namespace LastExpress {
Font::Font() : _numGlyphs(0), _glyphs(NULL), _glyphWidths(0) {
memset(&_palette, 0, sizeof(_palette));
memset(&_charMap, 0, sizeof(_charMap));
}
Font::~Font() {
reset();
}
void Font::reset() {
delete[] _glyphs;
delete[] _glyphWidths;
}
bool Font::load(Common::SeekableReadStream *stream) {
if (!stream)
return false;
// Reset data
reset();
// Read the palette
for (uint i = 0; i < _paletteSize; i++) {
_palette[i] = stream->readUint16LE();
}
// Read the character map
stream->read(_charMap, _charMapSize);
// Read the glyphs
_numGlyphs = stream->readUint16LE();
_glyphs = new byte[_numGlyphs * 18 * 8];
stream->read(_glyphs, _numGlyphs * 18 * 8);
// TODO: Read something else?
//uint16 unknown = fontFile->readByte();
//warning("unknown = %d", unknown);
//warning("pos = %d", fontFile->pos());
//warning("left = %d", fontFile->size() - fontFile->pos());
//while (!fontFile->eos()) {
//unknown = fontFile->readByte();
//warning("val = %d", unknown);
//}
// Precalculate glyph widths
_glyphWidths = new byte[_numGlyphs];
for (uint16 i = 0; i < _numGlyphs; i++) {
_glyphWidths[i] = getGlyphWidth(i);
}
delete stream;
return true;
}
uint16 Font::getCharGlyph(uint16 c) const {
//warning("%c", c);
if (c >= 0x200)
error("Express::Font: Invalid character %d", c);
return _charMap[c];
}
byte *Font::getGlyphImg(uint16 g) {
if (!_glyphs)
error("Express::getGlyphImg: Invalid glyphs!");
if (g >= _numGlyphs)
error("Express::getGlyphImg: Invalid glyph %d (%d available)", g, _numGlyphs);
return _glyphs + g * 18 * 8;
}
uint8 Font::getGlyphWidth(uint16 g) {
byte *p = getGlyphImg(g);
uint8 maxLineWidth = 0;
for (int j = 0; j < 18; j++) {
uint8 currentLineWidth = 0;
for (uint8 i = 0; i < 16; i++) {
byte index;
if (i % 2)
index = *p & 0xf;
else
index = *p >> 4;
uint16 color = _palette[index];
if (color != 0x1f)
currentLineWidth = i;
if (i % 2)
p++;
}
if (currentLineWidth > maxLineWidth)
maxLineWidth = currentLineWidth;
}
return maxLineWidth;
}
byte *Font::getCharImg(uint16 c) {
return getGlyphImg(getCharGlyph(c));
}
uint8 Font::getCharWidth(uint16 c) const{
if (c == 0x20) {
// Space is a special case
// TODO: this is an arbitrary value
return 10;
} else {
if (!_glyphWidths)
error("Express::getCharWidth: Invalid glyphs widths!");
return _glyphWidths[getCharGlyph(c)];
}
}
uint16 Font::getStringWidth(Common::String str) const {
uint16 width = 0;
for (uint i = 0; i < str.size(); i++)
width += getCharWidth((unsigned) (int)str[i]);
return width;
}
uint16 Font::getStringWidth(const uint16 *str, uint16 length) const {
uint16 width = 0;
for (uint i = 0; i < length; i++)
width += getCharWidth(str[i]);
return width;
}
void Font::drawChar(Graphics::Surface *surface, int16 x, int16 y, uint16 c) {
byte *p = getCharImg(c);
for (int16 j = 0; j < 18; j++) {
for (int16 i = 0; i < 16; i++) {
byte index;
if (i % 2)
index = *p & 0xf;
else
index = *p >> 4;
uint16 color = _palette[index];
if (color != 0x1f) {
surface->fillRect(Common::Rect(x+i, y+j, x+i+1, y+j+1), color);
}
if (i % 2)
p++;
}
}
}
Common::Rect Font::drawString(Graphics::Surface *surface, int16 x, int16 y, Common::String str) {
int16 currentX = x;
for (uint i = 0; i < str.size(); i++) {
drawChar(surface, currentX, y, (unsigned) (int)str[i]);
currentX += getCharWidth((unsigned) (int)str[i]);
}
return Common::Rect(x, y, x + currentX, y + (int16)_charHeight);
}
Common::Rect Font::drawString(Graphics::Surface *surface, int16 x, int16 y, const uint16 *str, uint16 length) {
int16 currentX = x;
for (uint i = 0; i < length; i++) {
drawChar(surface, currentX, y, str[i]);
currentX += getCharWidth(str[i]);
}
return Common::Rect(x, y, x + currentX, y + (int16)_charHeight);
}
} // End of namespace LastExpress
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