author | hgs |
Mon, 18 Oct 2010 18:23:13 +0300 | |
changeset 34 | ed14f46c0e55 |
parent 6 | c3690ec91ef8 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (developer.feedback@nokia.com) |
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** |
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** This file is part of the HbCore module of the UI Extensions for Mobile. |
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** |
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** GNU Lesser General Public License Usage |
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** This file may be used under the terms of the GNU Lesser General Public |
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** License version 2.1 as published by the Free Software Foundation and |
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** appearing in the file LICENSE.LGPL included in the packaging of this file. |
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** Please review the following information to ensure the GNU Lesser General |
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** Public License version 2.1 requirements will be met: |
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at developer.feedback@nokia.com. |
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** |
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****************************************************************************/ |
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#include "hbinputregioncollector_p.h" |
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#include <QRegion> |
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#include <QTransform> |
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#include <QPointer> |
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#include "hbwidget.h" |
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#include "hbmainwindow.h" |
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#include "hbpopup.h" |
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#include "hbdeviceprofile.h" |
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/*! |
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@stable |
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\class HbInputRegionCollector |
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\brief Installs a filter on a HbWidget and observes for a change in position, size and visibility |
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of the attached widget. As soon as it detects a change in size, position or visibility it calculates |
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total of the region of all the widgets attached and emits updateRegion signal. |
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It is enabled and disabled by input framework, it is enabled when ever input framework detects |
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that the application is not having any HbMainWindow. |
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*/ |
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/// @cond |
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/*! |
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Creates a static instance of HbInputRegionCollector. |
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*/ |
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HbInputRegionCollector *HbInputRegionCollector::instance() |
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{ |
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static HbInputRegionCollector regionCollector; |
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return ®ionCollector; |
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} |
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/*! |
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Constructor. |
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*/ |
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HbInputRegionCollector::HbInputRegionCollector() |
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: d_ptr(new HbInputRegionCollectorPrivate()) |
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{ |
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} |
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/*! |
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Destructor. |
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*/ |
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HbInputRegionCollector::~HbInputRegionCollector() |
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{ |
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delete d_ptr; |
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} |
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/*! |
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Installs a even filter on the passed widget. |
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*/ |
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void HbInputRegionCollector::attach(HbWidget *widget) |
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{ |
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if (widget && !d_ptr->mInputWidgets.contains(widget)) { |
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if (d_ptr->mEnabled) { |
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widget->installEventFilter(this); |
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} |
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d_ptr->mInputWidgets.append(HbWidgetFilterList(widget)); |
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} |
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} |
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/*! |
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Detaches widget from region collection and updates current region if region collection is enabled. |
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*/ |
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void HbInputRegionCollector::detach(HbWidget *widget) |
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{ |
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if (widget && d_ptr->mInputWidgets.contains(widget)) { |
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widget->removeEventFilter(this); |
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d_ptr->mInputWidgets.removeOne(widget); |
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if (d_ptr->mEnabled) { |
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update(); |
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} |
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} |
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} |
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/*! |
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Observes size, position and move events of all attached widgets and calls update(). |
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|
104 |
*/ |
6
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|
105 |
bool HbInputRegionCollector::eventFilter(QObject *obj, QEvent *event) |
5
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|
106 |
{ |
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|
107 |
HbWidget *widget = qobject_cast<HbWidget *>(obj); |
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|
108 |
if (widget) { |
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|
109 |
switch (event->type()) { |
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|
110 |
case QEvent::GraphicsSceneResize: |
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|
111 |
case QEvent::GraphicsSceneMove: |
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|
112 |
update(); |
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|
113 |
break; |
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|
114 |
case QEvent::Show: { |
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|
115 |
// We can not query for HbWidget visiblility at this point |
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|
116 |
// so have to set it inside the strcuture variable. |
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|
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int pos = d_ptr->mInputWidgets.indexOf(widget); |
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|
118 |
if (pos != -1) { |
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|
119 |
// Temporary TODO ++ |
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120 |
// TODO write a HbInputWidgetStore class which will hold all the |
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121 |
// active widgets and will emit signals for example sceneBlocked() |
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122 |
// sceneUnBlocked(). And then connect to region collector. |
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|
123 |
HbPopup *popup = qobject_cast<HbPopup *>(obj); |
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|
124 |
// since there is a bug in Qt that QGraphicsItem geenrates two show events |
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|
125 |
// once when you do a show() and once when you added it to the scene(), |
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126 |
// so need a check on visibility. |
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|
127 |
if (popup && popup->isModal() && !d_ptr->mInputWidgets[pos].mIsVisible) { |
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|
128 |
d_ptr->mModalDialogs++; |
5
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|
129 |
} |
6
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|
130 |
// Temporary TODO -- |
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|
131 |
d_ptr->mInputWidgets[pos].mIsVisible = true; |
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132 |
update(); |
5
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|
133 |
} |
6
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|
134 |
break; |
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|
135 |
} |
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|
136 |
case QEvent::Hide: { |
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Revision: 201023
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|
137 |
int pos = d_ptr->mInputWidgets.indexOf(widget); |
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Revision: 201023
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|
138 |
if (pos != -1) { |
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Revision: 201023
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|
139 |
// Temporary TODO ++ |
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Revision: 201023
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|
140 |
HbPopup *popup = qobject_cast<HbPopup *>(obj); |
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Revision: 201023
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|
141 |
if (popup && popup->isModal()) { |
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Revision: 201023
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|
142 |
d_ptr->mModalDialogs--; |
5
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Revision: 201021
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|
143 |
} |
6
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Revision: 201023
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|
144 |
// Temporary TODO -- |
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Revision: 201023
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|
145 |
d_ptr->mInputWidgets[pos].mIsVisible = false; |
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Revision: 201023
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|
146 |
update(); |
5
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Revision: 201021
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|
147 |
} |
6
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Revision: 201023
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|
148 |
break; |
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Revision: 201023
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|
149 |
} |
5
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Revision: 201021
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|
150 |
default: |
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Revision: 201021
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|
151 |
break; |
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Revision: 201021
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|
152 |
}; |
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Revision: 201021
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|
153 |
} |
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Revision: 201021
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|
154 |
return false; |
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Revision: 201021
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|
155 |
} |
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Revision: 201021
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|
156 |
|
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Revision: 201021
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|
157 |
/*! |
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Revision: 201021
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|
158 |
Calculates all the attached HbWidget's rectangle and prepares a region out of it and then |
627c4a0fd0e7
Revision: 201021
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|
159 |
emits updateRegion. |
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Revision: 201021
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|
160 |
*/ |
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Revision: 201021
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|
161 |
void HbInputRegionCollector::update() |
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|
162 |
{ |
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Revision: 201021
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|
163 |
QRegion region; |
627c4a0fd0e7
Revision: 201021
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|
164 |
|
627c4a0fd0e7
Revision: 201021
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|
165 |
// since there is a modal dialog launched we need to mask the entire window. |
627c4a0fd0e7
Revision: 201021
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|
166 |
if (d_ptr->mModalDialogs) { |
627c4a0fd0e7
Revision: 201021
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|
167 |
region += QRect(QPoint(0, 0), HbDeviceProfile::current().logicalSize()); |
627c4a0fd0e7
Revision: 201021
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|
168 |
emit updateRegion(region); |
627c4a0fd0e7
Revision: 201021
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|
169 |
return; |
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Revision: 201021
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|
170 |
} |
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Revision: 201021
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|
171 |
|
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Revision: 201021
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|
172 |
QList<HbWidgetFilterList> list = d_ptr->mInputWidgets; |
627c4a0fd0e7
Revision: 201021
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|
173 |
for (int i = 0; i < list.size(); ++i) { |
627c4a0fd0e7
Revision: 201021
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|
174 |
if (list.at(i).mIsVisible) { |
627c4a0fd0e7
Revision: 201021
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|
175 |
HbWidget *widget = list.at(i).mWidget; |
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Revision: 201021
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|
176 |
if (widget) { |
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Revision: 201021
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|
177 |
HbMainWindow *window = widget->mainWindow(); |
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Revision: 201021
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|
178 |
if (window) { |
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Revision: 201021
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|
179 |
QRectF rect = widget->rect(); |
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Revision: 201021
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|
180 |
rect.translate(widget->pos()); |
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Revision: 201021
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|
181 |
// we need to check transformation of the QGraphicsView. |
627c4a0fd0e7
Revision: 201021
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|
182 |
// for example when there is a orientation switch transformation |
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Revision: 201021
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|
183 |
// is 270 degree. We should map it to get transformed rectangle. |
627c4a0fd0e7
Revision: 201021
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|
184 |
QTransform t = window->viewportTransform(); |
627c4a0fd0e7
Revision: 201021
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|
185 |
QRectF tRect = t.mapRect(rect); |
627c4a0fd0e7
Revision: 201021
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|
186 |
QRectF intersection = QRectF(window->geometry()).intersected(tRect); |
627c4a0fd0e7
Revision: 201021
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|
187 |
region += intersection.toRect(); |
627c4a0fd0e7
Revision: 201021
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diff
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|
188 |
} |
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Revision: 201021
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diff
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|
189 |
} |
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Revision: 201021
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diff
changeset
|
190 |
} |
6
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Revision: 201023
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|
191 |
} |
5
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Revision: 201021
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|
192 |
emit updateRegion(region); |
627c4a0fd0e7
Revision: 201021
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diff
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|
193 |
} |
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Revision: 201021
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diff
changeset
|
194 |
|
627c4a0fd0e7
Revision: 201021
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diff
changeset
|
195 |
/*! |
627c4a0fd0e7
Revision: 201021
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|
196 |
Enables region collection, this function is called by input framework. |
627c4a0fd0e7
Revision: 201021
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diff
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|
197 |
*/ |
627c4a0fd0e7
Revision: 201021
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|
198 |
void HbInputRegionCollector::setEnabled(bool enabled) |
627c4a0fd0e7
Revision: 201021
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|
199 |
{ |
627c4a0fd0e7
Revision: 201021
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|
200 |
d_ptr->mEnabled = enabled; |
627c4a0fd0e7
Revision: 201021
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parents:
diff
changeset
|
201 |
QList<HbWidgetFilterList>& list = d_ptr->mInputWidgets; |
627c4a0fd0e7
Revision: 201021
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parents:
diff
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|
202 |
for (int i = 0; i < list.size(); ++i) { |
627c4a0fd0e7
Revision: 201021
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parents:
diff
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|
203 |
HbWidget *widget = list.at(i).mWidget; |
627c4a0fd0e7
Revision: 201021
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parents:
diff
changeset
|
204 |
if (widget) { |
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if (enabled) { |
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widget->installEventFilter(this); |
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} else { |
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widget->removeEventFilter(this); |
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} |
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} |
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} |
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} |
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|
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//EOF |