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GRAPHICS: Initial code for reading FONT Mac resources
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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. | ||
* | ||
*/ | ||
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#include "common/stream.h" | ||
#include "common/textconsole.h" | ||
#include "graphics/surface.h" | ||
#include "graphics/fonts/macfont.h" | ||
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namespace Graphics { | ||
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enum { | ||
k_fontTypeImageHeightTable = (1 << 0), | ||
k_fontTypeGlyphWidthTable = (1 << 1), | ||
k_fontTypeFontColorTable = (1 << 7), | ||
k_fontTypeSyntheticFont = (1 << 8), | ||
k_fontTypeFixedWidthFont = (1 << 13), | ||
k_fontTypeNotExpandable = (1 << 14) | ||
}; | ||
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static int getDepth(uint16 _fontType) { | ||
// Returns 1, 2, 4, 8 | ||
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return 1 << ((_fontType >> 2) & 3); | ||
} | ||
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MacFont::MacFont() { | ||
_fontType = 0; | ||
_firstChar = 0; | ||
_lastChar = 0; | ||
_maxWidth = 0; | ||
_kernMax = 0; | ||
_nDescent = 0; | ||
_fRectWidth = 0; | ||
_fRectHeight = 0; | ||
_owTLoc = 0; | ||
_ascent = 0; | ||
_descent = 0; | ||
_leading = 0; | ||
_rowWords = 0; | ||
_bitImage = nullptr; | ||
} | ||
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MacFont::~MacFont() { | ||
free(_bitImage); | ||
} | ||
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bool MacFont::loadFOND(Common::SeekableReadStream &stream) { | ||
_ffFlags = stream.readUint16BE(); // flags for family | ||
_ffFamID = stream.readUint16BE(); // family ID number | ||
_ffFirstChar = stream.readUint16BE(); // ASCII code of first character | ||
_ffLastChar = stream.readUint16BE(); // ASCII code of last character | ||
_ffAscent = stream.readUint16BE(); // maximum ascent for 1-pt font | ||
_ffDescent = stream.readUint16BE(); // maximum descent for 1-pt font | ||
_ffLeading = stream.readUint16BE(); // maximum leading for 1-pt font | ||
_ffWidMax = stream.readUint16BE(); // maximum glyph width for 1-pt font | ||
_ffWTabOff = stream.readUint32BE(); // offset to family glyph-width table | ||
_ffKernOff = stream.readUint32BE(); // offset to kerning table | ||
_ffStylOff = stream.readUint32BE(); // offset to style-mapping table | ||
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for (int i = 0; i < 9; i++) // style properties info | ||
_ffProperty[i] = stream.readUint16BE(); | ||
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_ffIntl[0] = stream.readUint16BE(); // for international use | ||
_ffIntl[1] = stream.readUint16BE(); // for international use | ||
_ffVersion = stream.readUint16BE(); // version number | ||
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return true; | ||
} | ||
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bool MacFont::loadFont(Common::SeekableReadStream &stream) { | ||
_fontType = stream.readUint16BE(); // font type | ||
_firstChar = stream.readUint16BE(); // character code of first glyph | ||
_lastChar = stream.readUint16BE(); // character code of last glyph | ||
_maxWidth = stream.readUint16BE(); // maximum glyph width | ||
_kernMax = stream.readSint16BE(); // maximum glyph kern | ||
_nDescent = stream.readSint16BE(); // negative of descent | ||
_fRectWidth = stream.readUint16BE(); // width of font rectangle | ||
_fRectHeight = stream.readUint16BE(); // height of font rectangle | ||
_owTLoc = stream.readUint16BE(); // offset to width/offset table | ||
_ascent = stream.readUint16BE(); // maximum ascent measurement | ||
_descent = stream.readUint16BE(); // maximum descent measurement | ||
_leading = stream.readUint16BE(); // leading measurement | ||
_rowWords = stream.readUint16BE() * 2; | ||
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if (getDepth(_fontType) != 1) { | ||
warning("MacFont: %dbpp fonts are not supported", getDepth(_fontType)); | ||
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return false; | ||
} | ||
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// If positive, _nDescent holds the high bits of the offset to the | ||
// width/offset table. | ||
// https://developer.apple.com/legacy/library/documentation/mac/Text/Text-252.html | ||
if (_nDescent > 0) | ||
_owTLoc |= _nDescent << 16; | ||
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// Alignment is by word | ||
_owTLoc *= 2; | ||
_owTLoc += 16; | ||
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uint16 glyphCount = _lastChar - _firstChar + 1; | ||
_glyphs.resize(glyphCount); | ||
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// Bit image table | ||
uint16 bitImageSize = _rowWords * _fRectHeight; | ||
_bitImage = new byte[bitImageSize]; | ||
stream.read(_bitImage, bitImageSize); | ||
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// Bitmap location table | ||
// Last glyph is the pic for the missing glyph | ||
// One more word for determinig width | ||
uint16 *bitmapOffsets = (uint16 *)calloc(glyphCount + 2, sizeof(uint16)); | ||
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for (uint16 i = 0; i < glyphCount + 2; i++) | ||
bitmapOffsets[i] = stream.readUint16BE(); | ||
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for (uint16 i = 0; i < glyphCount + 1; i++) { | ||
Glyph *glyph = (i == glyphCount) ? &_defaultChar : &_glyphs[i]; | ||
glyph->bitmapOffset = bitmapOffsets[i]; | ||
glyph->bitmapWidth = bitmapOffsets[i + 1] - bitmapOffsets[i]; | ||
} | ||
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// Width/offset table | ||
stream.seek(_owTLoc); | ||
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for (uint16 i = 0; i < glyphCount; i++) { | ||
byte kerningOffset = stream.readByte(); | ||
byte width = stream.readByte(); | ||
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// 0xFF designates missing glyph | ||
if (kerningOffset == 0xFF && width == 0xFF) | ||
continue; | ||
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_glyphs[i].kerningOffset = _kernMax + kerningOffset; | ||
_glyphs[i].width = width; | ||
} | ||
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_defaultChar.kerningOffset = _kernMax + stream.readByte(); | ||
_defaultChar.width = _kernMax + stream.readByte(); | ||
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if (_fontType & k_fontTypeGlyphWidthTable) { | ||
warning("Skipping glyph-width table"); | ||
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for (uint16 i = 0; i < glyphCount; i++) | ||
stream.readUint16BE(); | ||
} | ||
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if (_fontType & k_fontTypeImageHeightTable) { | ||
warning("Skipping image height table"); | ||
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for (uint16 i = 0; i < glyphCount; i++) | ||
stream.readUint16BE(); | ||
} | ||
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return true; | ||
} | ||
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int MacFont::getFontHeight() const { | ||
return _fRectHeight; | ||
} | ||
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int MacFont::getMaxCharWidth() const { | ||
return _maxWidth; | ||
} | ||
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int MacFont::getCharWidth(uint32 chr) const { | ||
const Glyph *glyph = findGlyph(chr); | ||
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if (!glyph) | ||
return _maxWidth; | ||
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return glyph->width; | ||
} | ||
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void MacFont::drawChar(Surface *dst, uint32 chr, int x, int y, uint32 color) const { | ||
assert(dst != 0); | ||
assert(dst->format.bytesPerPixel == 1 || dst->format.bytesPerPixel == 2 || dst->format.bytesPerPixel == 4); | ||
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const Glyph *glyph = findGlyph(chr); | ||
if (!glyph || glyph->width == 0) | ||
return; | ||
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for (uint16 i = 0; i < _fRectHeight; i++) { | ||
byte *srcRow = _bitImage + i * _rowWords; | ||
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for (uint16 j = 0; j < glyph->bitmapWidth; j++) { | ||
uint16 bitmapOffset = glyph->bitmapOffset + j; | ||
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if (srcRow[bitmapOffset / 8] & (1 << (7 - (bitmapOffset % 8)))) { | ||
if (dst->format.bytesPerPixel == 1) | ||
*((byte *)dst->getBasePtr(x + j, y + i)) = color; | ||
else if (dst->format.bytesPerPixel == 2) | ||
*((uint16 *)dst->getBasePtr(x + j, y + i)) = color; | ||
else if (dst->format.bytesPerPixel == 4) | ||
*((uint32 *)dst->getBasePtr(x + j, y + i)) = color; | ||
} | ||
} | ||
} | ||
} | ||
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const MacFont::Glyph *MacFont::findGlyph(uint32 c) const { | ||
if (_glyphs.empty()) | ||
return 0; | ||
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if (c < _firstChar || c > _lastChar) | ||
return &_defaultChar; | ||
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return &_glyphs[c - _firstChar]; | ||
} | ||
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} // End of namespace Graphics |
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@@ -0,0 +1,102 @@ | ||
/* 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. | ||
* | ||
*/ | ||
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#ifndef GRAPHICS_FONTS_MACFONT_H | ||
#define GRAPHICS_FONTS_MACFONT_H | ||
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#include "common/array.h" | ||
#include "graphics/font.h" | ||
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namespace Graphics { | ||
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/** | ||
* Processing of Mac FONT/NFNT rResources | ||
*/ | ||
class MacFont : public Font { | ||
public: | ||
MacFont(); | ||
virtual ~MacFont(); | ||
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virtual int getFontHeight() const; | ||
virtual int getMaxCharWidth() const; | ||
virtual int getCharWidth(uint32 chr) const; | ||
virtual void drawChar(Surface *dst, uint32 chr, int x, int y, uint32 color) const; | ||
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bool loadFont(Common::SeekableReadStream &stream); | ||
bool loadFOND(Common::SeekableReadStream &stream); | ||
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private: | ||
// FONT/NFNT | ||
uint16 _fontType; | ||
uint16 _firstChar; | ||
uint16 _lastChar; | ||
uint16 _maxWidth; | ||
int16 _kernMax; | ||
int16 _nDescent; | ||
uint16 _fRectWidth; | ||
uint16 _fRectHeight; | ||
uint32 _owTLoc; | ||
uint16 _ascent; | ||
uint16 _descent; | ||
uint16 _leading; | ||
uint16 _rowWords; | ||
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// FOND | ||
uint16 _ffFlags; | ||
uint16 _ffFamID; | ||
uint16 _ffFirstChar; | ||
uint16 _ffLastChar; | ||
uint16 _ffAscent; | ||
uint16 _ffDescent; | ||
uint16 _ffLeading; | ||
uint16 _ffWidMax; | ||
uint32 _ffWTabOff; | ||
uint32 _ffKernOff; | ||
uint32 _ffStylOff; | ||
uint16 _ffProperty[9]; | ||
uint16 _ffIntl[2]; | ||
uint16 _ffVersion; | ||
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byte *_bitImage; | ||
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struct Glyph { | ||
void clear() { | ||
bitmapOffset = 0; | ||
width = 0; | ||
bitmapWidth = 0; | ||
kerningOffset = 0; | ||
} | ||
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uint16 bitmapOffset; | ||
byte width; | ||
uint16 bitmapWidth; | ||
int kerningOffset; | ||
}; | ||
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Common::Array<Glyph> _glyphs; | ||
Glyph _defaultChar; | ||
const Glyph *findGlyph(uint32 c) const; | ||
}; | ||
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} // End of namespace Graphics | ||
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#endif |
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