/*
* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
* Private implementation for CxuiCaptureKeyHandler
*/
#include <QVariant>
#include <QKeyEvent>
#include "cxuicapturekeyhandler_symbian_p.h"
#include "cxuicapturekeyhandler.h"
#include "cxutils.h"
#include "cxeengine.h"
#include "cxenamespace.h"
#include "cxefeaturemanager.h"
#include <w32std.h>
#include <eikon.hrh>
#include <coemain.h>
#include <e32keys.h> // for EKeyCamera
namespace {
const int CXUI_KEY_PRIORITY = 100;
const int CXUI_CAPTURE_KEY_CODE1 = 0xab;
const int CXUI_CAPTURE_KEY_CODE2 = 0xf849;
const int CXUI_AUTOFOCUS_KEY_CODE1 = 0xe2;
const int CXUI_AUTOFOCUS_KEY_CODE2 = 0xf880;
}
CxuiCaptureKeyHandlerPrivate::CxuiCaptureKeyHandlerPrivate(CxeEngine &aEngine, CxuiCaptureKeyHandler *parent) :
q_ptr(parent),
mEngine(aEngine),
mAutofocusKeyPressed(false),
mCaptureKeyPressed(false),
mWsSession(CCoeEnv::Static()->WsSession()),
mWindowGroup(CCoeEnv::Static()->RootWin())
{
CX_DEBUG_ENTER_FUNCTION();
// key codes hardcoded for now
// Autofocus key
mPrimaryCameraAutofocusKeys.append(CXUI_AUTOFOCUS_KEY_CODE1);
mPrimaryCameraAutofocusKeys.append(CXUI_AUTOFOCUS_KEY_CODE2);
// Capture keys for primary camera
mPrimaryCameraCaptureKeys.append(CXUI_CAPTURE_KEY_CODE1);
mPrimaryCameraCaptureKeys.append(CXUI_CAPTURE_KEY_CODE2);
startListeningKeys();
CX_DEBUG_EXIT_FUNCTION();
}
CxuiCaptureKeyHandlerPrivate::~CxuiCaptureKeyHandlerPrivate()
{
CX_DEBUG_ENTER_FUNCTION();
stopListeningKeys();
CX_DEBUG_EXIT_FUNCTION();
}
/*!
* Starts listening key events.
*/
void CxuiCaptureKeyHandlerPrivate::startListeningKeys()
{
CX_DEBUG_ENTER_FUNCTION();
// Protect from multiple calls
if (mCapturedKeyUpDownHandles.empty() && mCapturedKeyHandles.empty()) {
int key(0);
foreach (key, mPrimaryCameraAutofocusKeys) {
CX_DEBUG(("CxuiCaptureKeyHandlerPrivate - hooking autofocus key with scan / key code: %d", key));
listenKey(key);
}
foreach (key, mPrimaryCameraCaptureKeys) {
CX_DEBUG(("CxuiCaptureKeyHandlerPrivate - hooking capture key with scan / key code: %d", key));
listenKey(key);
}
}
CX_DEBUG_EXIT_FUNCTION();
}
/*!
* Stops listening key events.
*/
void CxuiCaptureKeyHandlerPrivate::stopListeningKeys()
{
CX_DEBUG_ENTER_FUNCTION();
int handle(0);
foreach (handle, mCapturedKeyUpDownHandles) {
mWindowGroup.CancelCaptureKeyUpAndDowns(handle);
}
mCapturedKeyUpDownHandles.clear();
foreach (handle, mCapturedKeyHandles) {
mWindowGroup.CancelCaptureKey(handle);
}
mCapturedKeyHandles.clear();
CX_DEBUG_EXIT_FUNCTION();
}
bool CxuiCaptureKeyHandlerPrivate::isAutofocusKeyPressed()
{
return mAutofocusKeyPressed;
}
bool CxuiCaptureKeyHandlerPrivate::isCaptureKeyPressed()
{
return mCaptureKeyPressed;
}
bool CxuiCaptureKeyHandlerPrivate::handleKeyEvent(QEvent *event)
{
CX_DEBUG_ENTER_FUNCTION();
Q_Q(CxuiCaptureKeyHandler);
bool eventWasConsumed = false;
if (event->type() == QEvent::KeyPress) {
QKeyEvent *keyEvent = static_cast<QKeyEvent*> (event);
if ( mPrimaryCameraAutofocusKeys.contains(keyEvent->nativeScanCode())
&& !mAutofocusKeyPressed ) {
mAutofocusKeyPressed = true;
eventWasConsumed = true;
emit q->autofocusKeyPressed();
} else if (mPrimaryCameraCaptureKeys.contains(keyEvent->nativeScanCode())
&& !mCaptureKeyPressed) {
mCaptureKeyPressed = true;
eventWasConsumed = true;
emit q->captureKeyPressed();
}
} else if (event->type() == QEvent::KeyRelease) {
QKeyEvent *keyEvent = static_cast<QKeyEvent*> (event);
if ( mPrimaryCameraAutofocusKeys.contains(keyEvent->nativeScanCode())
&& mAutofocusKeyPressed ) {
mAutofocusKeyPressed = false;
eventWasConsumed = true;
emit q->autofocusKeyReleased();
} else if (mPrimaryCameraCaptureKeys.contains(keyEvent->nativeScanCode())
&& mCaptureKeyPressed) {
mCaptureKeyPressed = false;
eventWasConsumed = true;
emit q->captureKeyReleased();
}
}
CX_DEBUG_EXIT_FUNCTION();
return eventWasConsumed;
}
/*!
* Helper method to listen to given key (key code or scan code).
* We need to listen to both "key up", "key down" and "key pressed" events to
* get all the necessary events to handleKeyEvent(). If we e.g. just listen
* to up/down events, the way native events are translated to QKeyEvents,
* we only get QEvent::KeyRelease event when partially in background.
* @param key Keycode or scancode for the key to listen. Both should be listened.
*/
void CxuiCaptureKeyHandlerPrivate::listenKey(int key)
{
// Capture key down and up events
int handle = mWindowGroup.CaptureKeyUpAndDowns(key, 0, 0, CXUI_KEY_PRIORITY);
// Handle < 0 means error.
if (handle >= 0) {
mCapturedKeyUpDownHandles.append(handle);
} else {
CX_DEBUG(("[WARNING] CxuiCaptureKeyHandlerPrivate - Problem hooking to key-up/key-down with code: %d", key));
}
// Capture key press events
handle = mWindowGroup.CaptureKey(key, 0, 0, CXUI_KEY_PRIORITY);
if (handle >= 0) {
mCapturedKeyHandles.append(handle);
} else {
CX_DEBUG(("[WARNING] CxuiCaptureKeyHandlerPrivate - Problem hooking to key-press with code: %d", key));
}
}
// end of file