scummvm/engines/titanic/support/credit_text.cpp

/* 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 "titanic/support/credit_text.h"
#include "titanic/titanic.h"

namespace Titanic {

CCreditText::CCreditText() : _screenManagerP(nullptr), _field14(0),
	_ticks(0), _fontHeight(1), _objectP(nullptr), _totalHeight(0),
	_field40(0), _field44(0), _field48(0), _field4C(0), _field50(0),
	_field54(0), _field58(0), _field5C(0) {
}

void CCreditText::clear() {
	_groups.destroyContents();
	_objectP = nullptr;
}

void CCreditText::load(CGameObject *obj, CScreenManager *screenManager,
		const Rect &rect, int v) {
	_objectP = obj;
	_screenManagerP = screenManager;
	_field14 = v;

	setup();

	_ticks = g_vm->_events->getTicksCount();
	_field40 = 0;
	_field44 = 0xFF;
	_field48 = 0xFF;
	_field4C = 0xFF;
	_field50 = 0;
	_field54 = 0;
	_field58 = 0;
	_field5C = 0;
}

void CCreditText::setup() {
	Common::SeekableReadStream *stream = g_vm->_filesManager->getResource(
		CString::format("TEXT/155"));
	int oldFontNumber = _screenManagerP->setFontNumber(3);
	_fontHeight = _screenManagerP->getFontHeight();

	while (stream->pos() < stream->size()) {
		// Read in the line
		CString srcLine = readLine(stream);

		// Create a new group and line within it
		CCreditLineGroup *group = new CCreditLineGroup();
		CCreditLine *line = new CCreditLine(srcLine, 
			_screenManagerP->stringWidth(srcLine));
		group->_lines.push_back(line);

		// Loop to add more lines to the group
		bool hasDots = false;
		while (stream->pos() < stream->size()) {
			srcLine = readLine(stream);
			if (srcLine.empty())
				break;

			line = new CCreditLine(srcLine,
				_screenManagerP->stringWidth(srcLine));
			group->_lines.push_back(line);

			if (srcLine.contains("...."))
				hasDots = true;
		}

		_groups.push_back(group);
	}

	_groupIt = _groups.begin();
	_lineIt = (*_groupIt)->_lines.begin();
	_totalHeight = _objectP->getBounds().height() + _fontHeight * 2;
}

CString CCreditText::readLine(Common::SeekableReadStream *stream) {
	CString line;
	char c = stream->readByte();

	while (c != '\r' && c != '\n' && c != '\0') {
		line += c;

		if (stream->pos() == stream->size())
			break;
		c = stream->readByte();
	}

	if (c == '\r') {
		// Read following '\n'
		stream->readByte();
	}

	return line;
}

void CCreditText::handleDots(CCreditLineGroup *group) {
	uint maxWidth = 0;
	CCreditLines::iterator second = group->_lines.begin();
	++second;

	// Figure out the maximum width of secondary lines
	for (CCreditLines::iterator i = second; i != group->_lines.end(); ++i)
		maxWidth = MAX(maxWidth, (*i)->_lineWidth);
	
	int charWidth = _screenManagerP->stringWidth(".");

	// Process the secondary lines
	for (CCreditLines::iterator i = second; i != group->_lines.end(); ++i) {
		CCreditLine *line = *i;
		if (line->_lineWidth >= maxWidth)
			continue;

		int dotsCount = (maxWidth + charWidth / 2 - line->_lineWidth) / charWidth;
		int dotIndex = line->_line.indexOf("....");

		if (dotIndex > 0) {
			CString leftStr = line->_line.left(dotIndex);
			CString dotsStr('.', dotsCount);
			CString rightStr = line->_line.right(dotIndex);

			line->_line = CString::format("%s%s%s", leftStr.c_str(),
				dotsStr.c_str(), rightStr.c_str());
			line->_lineWidth = maxWidth;
		}
	}
}

bool CCreditText::draw() {
	return false;
}

} // End of namespace Titanic