scummvm/engines/sci/graphics/fontsjis.cpp
2014-02-18 02:39:37 +01:00

80 lines
3.0 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.
*
*/
#include "sci/sci.h"
#include "sci/engine/state.h"
#include "sci/graphics/screen.h"
#include "sci/graphics/font.h"
#include "sci/graphics/fontsjis.h"
namespace Sci {
GfxFontSjis::GfxFontSjis(GfxScreen *screen, GuiResourceId resourceId)
: _resourceId(resourceId), _screen(screen) {
assert(resourceId != -1);
if (!_screen->getUpscaledHires())
error("I don't want to initialize, when not being in upscaled hires mode");
_commonFont = Graphics::FontSJIS::createFont(Common::kPlatformPC98);
if (!_commonFont)
error("Could not load ScummVM's 'SJIS.FNT'");
}
GfxFontSjis::~GfxFontSjis() {
}
GuiResourceId GfxFontSjis::getResourceId() {
return _resourceId;
}
// Returns true for first byte of double byte characters
bool GfxFontSjis::isDoubleByte(uint16 chr) {
if (((chr >= 0x81) && (chr <= 0x9F)) || ((chr >= 0xE0) && (chr <= 0xEF)))
return true;
return false;
}
// We can do >>1, because returned char width/height is 8 or 16 exclusively. Font returns hires size, we need lowres
byte GfxFontSjis::getHeight() {
return _commonFont->getFontHeight() >> 1;
}
byte GfxFontSjis::getCharWidth(uint16 chr) {
return _commonFont->getCharWidth(chr) >> 1;
}
void GfxFontSjis::draw(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput) {
// TODO: Check, if character fits on screen - if it doesn't we need to skip it
// Normally SCI cuts the character and draws the part that fits, but the common SJIS doesn't support that
// According to LordHoto the PC98 ROM actually split the screen into 40x25 kanji chars and was only able to place
// them there. So removing the lower 4 bits of the horizontal coordinate puts them into the correct position (it seems).
// If we don't do this, the characters will be slightly to the right, caused by "GetLongest()" inside GfxText16 that
// leaves the last character that is causing a split into a new line within the current line instead of removing it.
// That way the result will actually be too long (not our fault, sierra sci does it the same way)
_screen->putKanjiChar(_commonFont, left & 0xFFC, top, chr, color);
}
} // End of namespace Sci