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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 "m4/font.h"
#include "m4/m4.h"
#include "m4/compression.h"
namespace M4 {
Font::Font(MadsM4Engine *vm) : _vm(vm) {
_sysFont = true;
_filename = NULL;
//TODO: System font
_fontColors[0] = _vm->_palette->BLACK;
_fontColors[1] = _vm->_palette->WHITE;
_fontColors[2] = _vm->_palette->BLACK;
_fontColors[3] = _vm->_palette->DARK_GRAY;
}
void Font::setFont(const char *filename) {
if ((_filename != NULL) && (strcmp(filename, _filename) == 0))
// Already using specified font, so don't bother reloading
return;
_sysFont = false;
_filename = filename;
if (_vm->isM4())
setFontM4(filename);
else
setFontMads(filename);
}
void Font::setFontM4(const char *filename) {
Common::SeekableReadStream *fontFile = _vm->res()->openFile(filename);
if (fontFile->readUint32LE() != MKID_BE('FONT')) {
printf("Font::Font: FONT tag expected\n");
return;
}
_maxHeight = fontFile->readByte();
_maxWidth = fontFile->readByte();
uint32 fontSize = fontFile->readUint32LE();
//printf("Font::Font: _maxWidth = %d, _maxHeight = %d, fontSize = %d\n", _maxWidth, _maxHeight, fontSize);
if (fontFile->readUint32LE() != MKID_BE('WIDT')) {
printf("Font::Font: WIDT tag expected\n");
return;
}
_charWidths = new uint8[256];
fontFile->read(_charWidths, 256);
if (fontFile->readUint32LE() != MKID_BE('OFFS')) {
printf("Font::Font: OFFS tag expected\n");
return;
}
_charOffs = new uint16[256];
for (int i = 0; i < 256; i++)
_charOffs[i] = fontFile->readUint16LE();
if (fontFile->readUint32LE() != MKID_BE('PIXS')) {
printf("Font::Font: PIXS tag expected\n");
return;
}
_charData = new uint8[fontSize];
fontFile->read(_charData, fontSize);
_vm->res()->toss(filename);
}
void Font::setFontMads(const char *filename) {
MadsPack fontData(filename, _vm);
Common::SeekableReadStream *fontFile = fontData.getItemStream(0);
_maxHeight = fontFile->readByte();
_maxWidth = fontFile->readByte();
_charWidths = new uint8[128];
// Char data is shifted by 1
_charWidths[0] = 0;
fontFile->read(_charWidths + 1, 127);
fontFile->readByte(); // remainder
_charOffs = new uint16[128];
uint32 startOffs = 2 + 128 + 256;
uint32 fontSize = fontFile->size() - startOffs;
// Char data is shifted by 1
_charOffs[0] = 0;
for (int i = 1; i < 128; i++)
_charOffs[i] = fontFile->readUint16LE() - startOffs;
fontFile->readUint16LE(); // remainder
_charData = new uint8[fontSize];
fontFile->read(_charData, fontSize);
delete fontFile;
}
Font::~Font() {
if (!_sysFont) {
delete[] _charWidths;
delete[] _charOffs;
delete[] _charData;
}
}
void Font::setColor(uint8 color) {
if (_sysFont)
_fontColors[1] = color;
else
_fontColors[3] = color;
}
void Font::setColors(uint8 alt1, uint8 alt2, uint8 foreground) {
if (_sysFont)
_fontColors[1] = foreground;
else {
_fontColors[1] = alt1;
_fontColors[2] = alt2;
_fontColors[3] = foreground;
}
}
int32 Font::write(M4Surface *surface, const char *text, int x, int y, int width, int spaceWidth, uint8 colors[]) {
/*TODO
if (custom_ascii_converter) { // if there is a function to convert the extended ASCII characters
custom_ascii_converter(out_string); // call it with the string
}
*/
if (width > 0)
width = MIN(surface->width(), x + width);
else
width = surface->width();
x++;
y++;
int skipY = 0;
if (y < 0) {
skipY = -y;
y = 0;
}
int height = MAX(0, _maxHeight - skipY);
if (height == 0)
return x;
int bottom = y + height - 1;
if (bottom > surface->height() - 1) {
height -= MIN(height, bottom - (surface->height() - 1));
}
if (height <= 0)
return x;
uint8 *destPtr = (uint8*)surface->getBasePtr(x, y);
uint8 *oldDestPtr = destPtr;
int xPos = x;
while (*text) {
unsigned char theChar = (*text++) & 0x7F;
int charWidth = _charWidths[theChar];
if (charWidth > 0) {
if (xPos + charWidth >= width)
return xPos;
uint8 *charData = &_charData[_charOffs[theChar]];
int bpp = charWidth / 4 + 1;
if (!_vm->isM4()) {
if (charWidth > 12)
bpp = 4;
else if (charWidth > 8)
bpp = 3;
else if (charWidth > 4)
bpp = 2;
else
bpp = 1;
}
if (skipY != 0)
charData += bpp * skipY;
for (int i = 0; i < height; i++) {
for (int j = 0; j < bpp; j++) {
if (*charData & 0xc0)
*destPtr = colors[(*charData & 0xc0) >> 6];
destPtr++;
if (*charData & 0x30)
*destPtr = colors[(*charData & 0x30) >> 4];
destPtr++;
if (*charData & 0x0C)
*destPtr = colors[(*charData & 0x0C) >> 2];
destPtr++;
if (*charData & 0x03)
*destPtr = colors[*charData & 0x03];
destPtr++;
charData++;
}
destPtr += surface->width() - bpp * 4;
}
destPtr = oldDestPtr + charWidth + spaceWidth;
oldDestPtr = destPtr;
}
xPos += charWidth + spaceWidth;
}
surface->freeData();
return xPos;
}
int32 Font::getWidth(const char *text, int spaceWidth) {
/*
if (custom_ascii_converter) { // if there is a function to convert the extended ASCII characters
custom_ascii_converter(out_string); // call it with the string
}
*/
int width = 0;
while (*text)
width += _charWidths[*text++ & 0x7F] + spaceWidth;
return width;
}
} // End of namespace M4
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