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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.
*
*/
#include "mutationofjb/font.h"
#include "mutationofjb/encryptedfile.h"
#include "mutationofjb/util.h"
#include "common/debug.h"
namespace MutationOfJB {
Font::Font(const Common::String &fileName, int horizSpacing, int lineHeight) :
_horizSpacing(horizSpacing),
_lineHeight(lineHeight),
_maxCharWidth(0) {
load(fileName);
}
bool Font::load(const Common::String &fileName) {
EncryptedFile file;
file.open(fileName);
if (!file.isOpen()) {
reportFileMissingError(fileName.c_str());
return false;
}
file.seek(0x02D6, SEEK_SET); // Skip header + unknown data (unused palette?).
uint16 noGlyphs = 0;
noGlyphs = file.readUint16LE();
file.seek(7, SEEK_CUR); // Skip unknown data (0s).
uint8 maxHeight = 0;
while (noGlyphs--) {
const uint8 character = file.readByte();
const uint8 width = file.readByte();
const uint8 height = file.readByte();
Graphics::ManagedSurface &surf = _glyphs[character];
surf.create(width, height);
for (int h = 0; h < height; ++h) {
file.read(surf.getBasePtr(0, h), width);
}
if (width > _maxCharWidth) {
_maxCharWidth = width;
}
if (height > maxHeight) {
maxHeight = height;
}
}
if (_lineHeight == -1) {
_lineHeight = maxHeight;
}
return true;
}
int Font::getFontHeight() const {
return _lineHeight;
}
int Font::getMaxCharWidth() const {
return _maxCharWidth;
}
int Font::getCharWidth(uint32 chr) const {
GlyphMap::iterator it = _glyphs.find(chr);
if (it == _glyphs.end()) {
return 0;
}
return it->_value.w;
}
int Font::getKerningOffset(uint32 left, uint32 right) const {
if (left == 0) {
// Do not displace the first character.
return 0;
}
if (_glyphs.find(left) == _glyphs.end()) {
// Missing glyphs must not create extra displacement.
// FIXME: This way is not completely correct, as if the last character is
// missing a glyph, it will still create extra displacement. This should
// not affect the visuals but it might affect getStringWidth() / getBoundingBox().
return 0;
}
return _horizSpacing;
}
class FontBlitOperation {
public:
FontBlitOperation(const Font &font, const byte baseColor)
: _font(font),
_baseColor(baseColor) {}
byte operator()(const byte srcColor, const byte destColor) {
if (srcColor == 0) {
// Transparency - keep destination color.
return destColor;
}
// Replace destination with transformed source color.
return _font.transformColor(_baseColor, srcColor);
}
private:
const Font &_font;
const byte _baseColor;
};
void Font::drawChar(Graphics::Surface *dst, uint32 chr, int x, int y, uint32 color) const {
GlyphMap::iterator it = _glyphs.find(chr);
if (it == _glyphs.end()) {
// Missing glyph is a common situation in the game and it's okay to ignore it.
return;
}
Graphics::ManagedSurface &glyphSurface = it->_value;
blit_if(glyphSurface, *dst, Common::Point(x, y), FontBlitOperation(*this, color));
}
uint8 Font::transformColor(uint8 baseColor, uint8 glyphColor) const {
return baseColor + glyphColor - 0x10;
}
SystemFont::SystemFont() : Font("sysfnt.aft", 1, 7) {}
SpeechFont::SpeechFont() : Font("font1.aft", -1, -1) {}
uint8 SpeechFont::transformColor(uint8 baseColor, uint8 glyphColor) const {
// Hack in original game.
if (glyphColor == 0x11) {
return 0xC0;
}
return Font::transformColor(baseColor, glyphColor);
}
}
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