127 lines
3.0 KiB
C++
127 lines
3.0 KiB
C++
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/* 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/system.h"
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#include "bagel/spacebar/boflib/timer.h"
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#include "bagel/bagel.h"
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#include "bagel/boflib/log.h"
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namespace Bagel {
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namespace SpaceBar {
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bool CBofTimer::_bModified = false;
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CBofTimer *CBofTimer::_pTimerList = nullptr;
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WindowTimer::WindowTimer(uint32 interval, uint32 id, BofCallback callback) :
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_interval(interval), _id(id), _callback(callback) {
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_lastExpiryTime = g_system->getMillis();
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}
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CBofTimer::CBofTimer() {
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_lLastTime = 0;
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_nID = 0;
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_nInterval = 0;
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_pCallBack = nullptr;
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_lUserInfo = 0;
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_bActive = false;
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// Another item for the list
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if (_pTimerList == nullptr) {
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_pTimerList = this;
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} else {
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_pTimerList->addToTail(this);
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}
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// Creating a new timer object modifies the timer list
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_bModified = true;
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}
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CBofTimer::CBofTimer(uint32 nID, uint32 nInterval, void *lUserInfo, BofCallback pCallBack) {
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_lLastTime = 0;
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_nID = nID;
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_nInterval = nInterval;
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_pCallBack = pCallBack;
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_lUserInfo = lUserInfo;
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_bActive = false;
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// Another item for the list
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if (_pTimerList == nullptr) {
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_pTimerList = this;
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} else {
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_pTimerList->addToTail(this);
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}
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// Creating a new timer object modifies the timer list
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_bModified = true;
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}
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CBofTimer::~CBofTimer() {
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assert(isValidObject(this));
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if (_pTimerList == this) {
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_pTimerList = (CBofTimer *)_pTimerList->getNext();
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}
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// Removing a timer object modifies the timer list
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_bModified = true;
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}
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void CBofTimer::handleTimers() {
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CBofTimer *pTimer = _pTimerList;
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while (pTimer != nullptr) {
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if (pTimer->isActive()) {
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uint32 lCurrentTime = g_system->getMillis();
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if ((uint32)(lCurrentTime - pTimer->_lLastTime) >= pTimer->_nInterval) {
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// Remember for next time
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pTimer->_lLastTime = lCurrentTime;
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if (pTimer->_pCallBack != nullptr) {
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// Execute call back
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(*pTimer->_pCallBack)(pTimer->_nID, pTimer->_lUserInfo);
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// If callback modifies the timer list, then we must start over
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if (_bModified) {
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pTimer = _pTimerList;
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continue;
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}
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} else {
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// Otherwise, something is wrong
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logWarning(buildString("Timer without a callback: %d", pTimer->_nID));
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}
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}
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}
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pTimer = (CBofTimer *)pTimer->getNext();
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}
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}
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} // namespace SpaceBar
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} // namespace Bagel
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