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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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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* Private implementation for CxuiCaptureKeyHandler
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*/
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#include <QVariant>
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#include <QKeyEvent>
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#include "cxuicapturekeyhandler_symbian_p.h"
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#include "cxuicapturekeyhandler.h"
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#include "cxutils.h"
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#include "cxeengine.h"
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#include "cxenamespace.h"
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#include "cxefeaturemanager.h"
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#include <w32std.h>
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#include <eikon.hrh>
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#include <coemain.h>
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#include <e32keys.h> // for EKeyCamera
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namespace {
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const int CXUI_KEY_PRIORITY = 100;
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const int CXUI_CAPTURE_KEY_CODE1 = 0xab;
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const int CXUI_CAPTURE_KEY_CODE2 = 0xf849;
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const int CXUI_AUTOFOCUS_KEY_CODE1 = 0xe2;
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const int CXUI_AUTOFOCUS_KEY_CODE2 = 0xf880;
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}
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CxuiCaptureKeyHandlerPrivate::CxuiCaptureKeyHandlerPrivate(CxeEngine &aEngine, CxuiCaptureKeyHandler *parent) :
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q_ptr(parent),
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mEngine(aEngine),
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mAutofocusKeyPressed(false),
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mCaptureKeyPressed(false),
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mWsSession(CCoeEnv::Static()->WsSession()),
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mWindowGroup(CCoeEnv::Static()->RootWin())
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{
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CX_DEBUG_ENTER_FUNCTION();
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// key codes hardcoded for now
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// Autofocus key
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mPrimaryCameraAutofocusKeys.append(CXUI_AUTOFOCUS_KEY_CODE1);
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mPrimaryCameraAutofocusKeys.append(CXUI_AUTOFOCUS_KEY_CODE2);
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// Capture keys for primary camera
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mPrimaryCameraCaptureKeys.append(CXUI_CAPTURE_KEY_CODE1);
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mPrimaryCameraCaptureKeys.append(CXUI_CAPTURE_KEY_CODE2);
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listenKeys(true);
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CX_DEBUG_EXIT_FUNCTION();
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}
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CxuiCaptureKeyHandlerPrivate::~CxuiCaptureKeyHandlerPrivate()
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{
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CX_DEBUG_ENTER_FUNCTION();
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listenKeys(false);
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CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Start or stop listening key events.
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* @param listen Should we start (true) or stop (false) listening key events.
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*/
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void CxuiCaptureKeyHandlerPrivate::listenKeys(bool listen)
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{
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CX_DEBUG_ENTER_FUNCTION();
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if (listen) {
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// Protect from multiple calls
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if (mCapturedKeyUpDownHandles.empty() && mCapturedKeyHandles.empty()) {
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int key(0);
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foreach (key, mPrimaryCameraAutofocusKeys) {
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CX_DEBUG(("CxuiCaptureKeyHandlerPrivate - hooking autofocus key with scan / key code: %d", key));
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listenKey(key);
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}
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foreach (key, mPrimaryCameraCaptureKeys) {
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CX_DEBUG(("CxuiCaptureKeyHandlerPrivate - hooking capture key with scan / key code: %d", key));
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listenKey(key);
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}
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}
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} else {
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int handle(0);
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foreach (handle, mCapturedKeyUpDownHandles) {
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mWindowGroup.CancelCaptureKeyUpAndDowns(handle);
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}
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mCapturedKeyUpDownHandles.clear();
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foreach (handle, mCapturedKeyHandles) {
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mWindowGroup.CancelCaptureKey(handle);
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}
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mCapturedKeyHandles.clear();
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}
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CX_DEBUG_EXIT_FUNCTION();
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}
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bool CxuiCaptureKeyHandlerPrivate::isAutofocusKeyPressed()
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{
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return mAutofocusKeyPressed;
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}
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bool CxuiCaptureKeyHandlerPrivate::isCaptureKeyPressed()
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{
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return mCaptureKeyPressed;
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}
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bool CxuiCaptureKeyHandlerPrivate::handleKeyEvent(QEvent *event)
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{
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CX_DEBUG_ENTER_FUNCTION();
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Q_Q(CxuiCaptureKeyHandler);
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bool eventWasConsumed = false;
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if (event->type() == QEvent::KeyPress) {
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QKeyEvent *keyEvent = static_cast<QKeyEvent*> (event);
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if ( mPrimaryCameraAutofocusKeys.contains(keyEvent->nativeScanCode())
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&& !mAutofocusKeyPressed ) {
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mAutofocusKeyPressed = true;
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eventWasConsumed = true;
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emit q->autofocusKeyPressed();
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} else if (mPrimaryCameraCaptureKeys.contains(keyEvent->nativeScanCode())
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&& !mCaptureKeyPressed) {
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mCaptureKeyPressed = true;
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eventWasConsumed = true;
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emit q->captureKeyPressed();
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}
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} else if (event->type() == QEvent::KeyRelease) {
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QKeyEvent *keyEvent = static_cast<QKeyEvent*> (event);
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if ( mPrimaryCameraAutofocusKeys.contains(keyEvent->nativeScanCode())
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&& mAutofocusKeyPressed ) {
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mAutofocusKeyPressed = false;
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eventWasConsumed = true;
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emit q->autofocusKeyReleased();
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} else if (mPrimaryCameraCaptureKeys.contains(keyEvent->nativeScanCode())
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&& mCaptureKeyPressed) {
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mCaptureKeyPressed = false;
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eventWasConsumed = true;
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emit q->captureKeyReleased();
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}
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}
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CX_DEBUG_EXIT_FUNCTION();
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return eventWasConsumed;
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}
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/*!
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* Helper method to listen to given key (key code or scan code).
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* We need to listen to both "key up", "key down" and "key pressed" events to
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* get all the necessary events to handleKeyEvent(). If we e.g. just listen
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* to up/down events, the way native events are translated to QKeyEvents,
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* we only get QEvent::KeyRelease event when partially in background.
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* @param key Keycode or scancode for the key to listen. Both should be listened.
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*/
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void CxuiCaptureKeyHandlerPrivate::listenKey(int key)
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{
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// Capture key down and up events
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int handle = mWindowGroup.CaptureKeyUpAndDowns(key, 0, 0, CXUI_KEY_PRIORITY);
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// Handle < 0 means error.
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if (handle >= 0) {
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mCapturedKeyUpDownHandles.append(handle);
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} else {
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CX_DEBUG(("[WARNING] CxuiCaptureKeyHandlerPrivate - Problem hooking to key-up/key-down with code: %d", key));
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}
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// Capture key press events
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handle = mWindowGroup.CaptureKey(key, 0, 0, CXUI_KEY_PRIORITY);
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if (handle >= 0) {
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mCapturedKeyHandles.append(handle);
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} else {
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CX_DEBUG(("[WARNING] CxuiCaptureKeyHandlerPrivate - Problem hooking to key-press with code: %d", key));
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}
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}
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// end of file
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