author | hgs |
Wed, 01 Sep 2010 13:56:21 -0400 | |
changeset 11 | 786160610b4d |
parent 3 | 0954f5dd2cd0 |
child 16 | 3c88a81ff781 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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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 Lesser General Public License as published by |
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* the Free Software Foundation, version 2.1 of the License. |
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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 Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, |
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* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/". |
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* |
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* Description: |
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* |
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*/ |
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#ifndef QSTMCALLBACKTIMER_H_ |
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#define QSTMCALLBACKTIMER_H_ |
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#include <QTimer> |
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namespace qstmUiEventEngine |
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{ |
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/** |
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* define the method to be called by the timer; this includes the pointer number |
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* the timer is associated with (maybe some other solution could do this, but...) |
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*/ |
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class QStm_StateMachine ; |
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typedef void (QStm_StateMachine::*CallbackFunction)(int ); |
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#define INVOKE_CALLBACK(obj, funcptr) ((obj)->*(funcptr)) |
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/** |
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* CCallbackTimer to implement the timers. This needs to be replaced |
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* with something else if cross platform is needed. |
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*/ |
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class QStm_CallbackTimer : public QObject |
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{ |
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Q_OBJECT |
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public: |
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QStm_CallbackTimer(QStm_StateMachine* helper, CallbackFunction cbFunc, |
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int delay, int pointerNumber, bool isEnabled) : |
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m_helper(helper), m_callbackFunction(cbFunc), |
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m_delay(delay), m_isEnabled(isEnabled), m_pointerNumber(pointerNumber) |
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{ |
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m_isTriggered = false; |
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m_timer = new QTimer(this); |
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m_timer->setSingleShot(true); |
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connect(m_timer, SIGNAL(timeout()), this, SLOT(callback())); |
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} |
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/* |
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QStm_CallbackTimer(QStm_StateMachine* helper, const char* slot, |
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int delay, int pointerNumber, bool isEnabled) : |
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m_helper(helper), m_delay(delay), m_isEnabled(isEnabled), |
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m_pointerNumber(pointerNumber) |
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{ |
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m_isTriggered = false; |
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m_timer = new QTimer(this); |
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connect(m_timer, SIGNAL(timeout()), m_helper, slot); |
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} |
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*/ |
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/** Destructor */ |
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~QStm_CallbackTimer() |
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{ |
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if (m_timer && m_timer->isActive()) |
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{ |
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m_timer->stop(); |
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delete m_timer; |
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} |
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} |
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/** Set whether sending events is currently enabled */ |
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void setEnabled(bool enabled) |
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{ |
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m_isEnabled = enabled; |
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// cancel in case timer is already running |
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m_timer->stop(); |
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} |
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/** @return whether sending events is currently enabled */ |
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bool isEnabled() const |
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{ |
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return m_isEnabled; |
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} |
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/** Start the timer. Calls callback upon completion. It is possible to give temporary delay if needed, |
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* otherwise use the defined delay. |
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*/ |
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void start(int newDelay = 0) |
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{ |
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if (m_isEnabled) |
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{ |
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m_timer->stop(); |
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m_timer->setSingleShot(true); |
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if (newDelay != 0) |
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{ |
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m_timer->start(newDelay); |
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} |
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else |
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{ |
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m_timer->start(m_delay); |
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} |
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} |
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} |
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void setDelay(int delay) { m_delay = delay; } |
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int getDelay() { return m_delay; } |
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bool isTriggered() { return m_isTriggered; } |
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bool isActive() { return m_timer->isActive(); } |
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void stop() { m_timer->stop(); } |
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public slots: |
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void callback() |
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{ |
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m_isTriggered = true; |
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INVOKE_CALLBACK(m_helper, m_callbackFunction)(m_pointerNumber); |
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//CallbackFunction f = m_callbackFunction; |
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//(m_helper->*f)(m_pointerNumber); |
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m_isTriggered = false; |
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} |
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private: |
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QTimer* m_timer; |
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/// helper object that will be called back when timer is triggered |
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QStm_StateMachine* m_helper; |
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/// Function in the iHelper object call |
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CallbackFunction m_callbackFunction; |
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/// How long a time to wait before calling back after Start() |
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long m_delay; |
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/// whether sending holding events is currently enabled |
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bool m_isEnabled; |
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/** |
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* while we are inside RunL iIsTriggered = ETrue |
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*/ |
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bool m_isTriggered; |
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/* |
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* in multitouch now we need timers for each pointer |
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* could this be handled in some other way? |
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*/ |
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int m_pointerNumber ; |
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}; |
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} // namespace |
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#endif /* QSTMCALLBACKTIMER_H_ */ |