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103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "sci/sci.h"
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#include "sci/engine/state.h"
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#include "sci/graphics/screen.h"
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#include "sci/graphics/font.h"
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namespace Sci {
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GfxFontFromResource::GfxFontFromResource(ResourceManager *resMan, GfxScreen *screen, GuiResourceId resourceId)
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: _resourceId(resourceId), _screen(screen), _resMan(resMan) {
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assert(resourceId != -1);
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// Workaround: lsl1sci mixes its own internal fonts with the global
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// SCI ones, so we translate them here, by removing their extra bits
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if (!resMan->testResource(ResourceId(kResourceTypeFont, resourceId)))
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resourceId = resourceId & 0x7ff;
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_resource = resMan->findResource(ResourceId(kResourceTypeFont, resourceId), true);
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if (!_resource) {
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error("font resource %d not found", resourceId);
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}
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_resourceData = _resource->data;
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_numChars = READ_LE_UINT16(_resourceData + 2);
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_fontHeight = READ_LE_UINT16(_resourceData + 4);
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_chars = new Charinfo[_numChars];
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// filling info for every char
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for (int16 i = 0; i < _numChars; i++) {
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_chars[i].offset = READ_LE_UINT16(_resourceData + 6 + i * 2);
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_chars[i].w = _resourceData[_chars[i].offset];
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_chars[i].h = _resourceData[_chars[i].offset + 1];
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}
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}
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GfxFontFromResource::~GfxFontFromResource() {
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delete []_chars;
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_resMan->unlockResource(_resource);
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}
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GuiResourceId GfxFontFromResource::getResourceId() {
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return _resourceId;
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}
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byte GfxFontFromResource::getHeight() {
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return _fontHeight;
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}
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byte GfxFontFromResource::getCharWidth(uint16 chr) {
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return chr < _numChars ? _chars[chr].w : 0;
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}
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byte GfxFontFromResource::getCharHeight(uint16 chr) {
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return chr < _numChars ? _chars[chr].h : 0;
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}
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byte *GfxFontFromResource::getCharData(uint16 chr) {
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return chr < _numChars ? _resourceData + _chars[chr].offset + 2 : 0;
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}
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void GfxFontFromResource::draw(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput) {
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int charWidth = MIN<int>(getCharWidth(chr), _screen->getWidth() - left);
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int charHeight = MIN<int>(getCharHeight(chr), _screen->getHeight() - top);
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byte b = 0, mask = 0xFF;
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int y = 0;
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int16 greyedTop = top;
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byte *pIn = getCharData(chr);
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for (int i = 0; i < charHeight; i++, y++) {
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if (greyedOutput)
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mask = greyedTop++ % 2 ? 0xAA : 0x55;
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for (int done = 0; done < charWidth; done++) {
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if ((done & 7) == 0) // fetching next data byte
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b = *(pIn++) & mask;
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if (b & 0x80) // if MSB is set - paint it
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_screen->putFontPixel(top, left + done, y, color);
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b = b << 1;
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}
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}
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}
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} // End of namespace Sci
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