mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-02 15:16:46 +00:00
129 lines
3.5 KiB
C++
129 lines
3.5 KiB
C++
/* 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 "groovie/font.h"
|
|
|
|
namespace Groovie {
|
|
|
|
T7GFont::T7GFont() : _maxHeight(0), _maxWidth(0), _glyphs(0) {
|
|
}
|
|
|
|
T7GFont::~T7GFont() {
|
|
delete[] _glyphs;
|
|
}
|
|
|
|
bool T7GFont::load(Common::SeekableReadStream &stream) {
|
|
// Read the mapping of characters to glyphs
|
|
if (stream.read(_mapChar2Glyph, 128) < 128) {
|
|
error("Groovie::T7GFont: Couldn't read the character to glyph map");
|
|
return false;
|
|
}
|
|
|
|
// Calculate the number of glyphs
|
|
byte numGlyphs = 0;
|
|
for (int i = 0; i < 128; i++)
|
|
if (_mapChar2Glyph[i] >= numGlyphs)
|
|
numGlyphs = _mapChar2Glyph[i] + 1;
|
|
|
|
// Read the glyph offsets
|
|
uint16 *glyphOffsets = new uint16[numGlyphs];
|
|
for (int i = 0; i < numGlyphs; i++)
|
|
glyphOffsets[i] = stream.readUint16LE();
|
|
|
|
if (stream.eos()) {
|
|
error("Groovie::T7GFont: Couldn't read the glyph offsets");
|
|
delete[] glyphOffsets;
|
|
return false;
|
|
}
|
|
|
|
// Allocate the glyph data
|
|
delete[] _glyphs;
|
|
_glyphs = new Glyph[numGlyphs];
|
|
|
|
// Read the glyphs
|
|
_maxHeight = _maxWidth = 0;
|
|
for (int i = 0; (i < numGlyphs) && !stream.eos(); i++) {
|
|
// Verify we're at the expected stream position
|
|
if (stream.pos() != glyphOffsets[i]) {
|
|
error("Groovie::T7GFont: Glyph %d starts at %d but the current "
|
|
"offset is %d", i, glyphOffsets[i], stream.pos());
|
|
return false;
|
|
}
|
|
|
|
// Read the glyph information
|
|
Glyph *g = &_glyphs[i];
|
|
g->width = stream.readByte();
|
|
g->julia = stream.readByte();
|
|
|
|
// Read the pixels data into a dynamic array (we don't know its length)
|
|
Common::Array<byte> data;
|
|
data.reserve(300);
|
|
byte b = stream.readByte();
|
|
while (!stream.eos() && (b != 0xFF)) {
|
|
data.push_back(b);
|
|
b = stream.readByte();
|
|
}
|
|
|
|
// Verify the pixel data size
|
|
assert (data.size() % g->width == 0);
|
|
g->height = data.size() / g->width;
|
|
|
|
// Copy the pixel data into the definitive static array
|
|
g->pixels = new byte[data.size()];
|
|
memcpy(g->pixels, data.begin(), data.size());
|
|
|
|
// Update the max values
|
|
if (g->width > _maxWidth)
|
|
_maxWidth = g->width;
|
|
if (g->height > _maxHeight)
|
|
_maxHeight = g->height;
|
|
}
|
|
|
|
delete[] glyphOffsets;
|
|
return true;
|
|
}
|
|
|
|
void T7GFont::drawChar(Graphics::Surface *dst, byte chr, int x, int y, uint32 color) const {
|
|
// We ignore the color, as the font is already colored
|
|
const Glyph *glyph = getGlyph(chr);
|
|
const byte *src = glyph->pixels;
|
|
byte *target = (byte *)dst->getBasePtr(x, y);
|
|
|
|
for (int i = 0; i < glyph->height; i++) {
|
|
memcpy(target, src, glyph->width);
|
|
src += glyph->width;
|
|
target += dst->pitch;
|
|
}
|
|
}
|
|
|
|
const T7GFont::Glyph *T7GFont::getGlyph(byte chr) const {
|
|
assert (chr < 128);
|
|
|
|
byte numGlyph = _mapChar2Glyph[chr];
|
|
return &_glyphs[numGlyph];
|
|
}
|
|
|
|
} // End of Groovie namespace
|