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Diffstat (limited to 'engines/lastexpress/data/font.cpp')
| -rw-r--r-- | engines/lastexpress/data/font.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/engines/lastexpress/data/font.cpp b/engines/lastexpress/data/font.cpp new file mode 100644 index 0000000000..5f4b3b40b8 --- /dev/null +++ b/engines/lastexpress/data/font.cpp @@ -0,0 +1,205 @@ +/* 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/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 |