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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** Contact: Nokia Corporation (qt-info@nokia.com)

     5 **

     6 ** This file is part of the examples of the Qt Toolkit.

     7 **

     8 ** $QT_BEGIN_LICENSE:LGPL$

     9 ** No Commercial Usage

    10 ** This file contains pre-release code and may not be distributed.

    11 ** You may use this file in accordance with the terms and conditions

    12 ** contained in the either Technology Preview License Agreement or the

    13 ** Beta Release License Agreement.

    14 **

    15 ** GNU Lesser General Public License Usage

    16 ** Alternatively, this file may be used under the terms of the GNU Lesser

    17 ** General Public License version 2.1 as published by the Free Software

    18 ** Foundation and appearing in the file LICENSE.LGPL included in the

    19 ** packaging of this file.  Please review the following information to

    20 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    22 **

    23 ** In addition, as a special exception, Nokia gives you certain

    24 ** additional rights. These rights are described in the Nokia Qt LGPL

    25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this

    26 ** package.

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    28 ** GNU General Public License Usage

    29 ** Alternatively, this file may be used under the terms of the GNU

    30 ** General Public License version 3.0 as published by the Free Software

    31 ** Foundation and appearing in the file LICENSE.GPL included in the

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    33 ** ensure the GNU General Public License version 3.0 requirements will be

    34 ** met: http://www.gnu.org/copyleft/gpl.html.

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    39 **

    40 ****************************************************************************/

    41 

    42 #include <QGraphicsView>

    43 #include <QGraphicsWidget>

    44 #include <QGraphicsLinearLayout>

    45 #include <QList>

    46 

    47 #include "button.h"

    48 #include "menu.h"

    49 #include "themeevent.h"

    50 #include "theme.h"

    51 

    52 static const int MinMenuItemWidth = 150;

    53 static const int MinMenuItemHeight = 40;

    54 

    55 Menu::Menu(QGraphicsView* parent) : QGraphicsWidget(),

    56     m_Parent(parent), m_Layout(new QGraphicsLinearLayout(Qt::Vertical, this)),

    57     m_ButtonContainer(0), m_isMenuVisible(false), m_currentSelectedIndex(-1)

    58 {

    59     init();

    60 }

    61 

    62 Menu::~Menu()

    63 {

    64     for(int i = 0; i < m_ButtonContainer->count(); i++ ) {

    65         delete m_ButtonContainer->at(i);

    66     }

    67     m_ButtonContainer->clear();

    68 

    69     delete m_ButtonContainer;

    70     m_ButtonContainer = 0;

    71 }

    72 

    73 void Menu::init()

    74 {

    75     m_ButtonContainer = new QList<Button*>;

    76     

    77     m_Layout->setContentsMargins(0,0,0,0);

    78     m_Layout->setSpacing(0);

    79     

    80     setMinimumWidth(150); 

    81     

    82     setLayout(m_Layout);

    83     

    84     connect(Theme::p(), SIGNAL(themeChanged()), this, SLOT(themeChange()));

    85 }

    86 

    87 Button* Menu::addMenuItem(const QString itemName, QObject* receiver, const char* member)

    88 {

    89     Button* button = new Button(itemName ,this);

    90     button->setVisible(m_isMenuVisible);

    91     connect(button, SIGNAL(clicked(bool)), receiver, member);

    92     connect(button, SIGNAL(clicked(bool)), this, SLOT(menuShowHide()));

    93     m_ButtonContainer->append(button);

    94     button->setMinimumWidth(MinMenuItemWidth);

    95     button->setMinimumHeight(MinMenuItemHeight);

    96     return button;

    97 }

    98 

    99 void Menu::menuShowHide()

   100 {

   101     m_isMenuVisible ? menuHide() : menuShow();

   102     m_isMenuVisible = !m_isMenuVisible;

   103 }

   104 

   105 void Menu::menuShow()

   106 {

   107     for(int i = 0; i < m_ButtonContainer->count(); i++) {

   108         Button* button = m_ButtonContainer->at(i);

   109         m_Layout->addItem(button);

   110         button->show();

   111     }

   112 }

   113 

   114 void Menu::menuHide()

   115 {

   116     for(int i = 0; i < m_ButtonContainer->count(); i++) {

   117         Button* button = m_ButtonContainer->at(i);

   118         button->select(false);

   119         button->hide();

   120         m_Layout->removeItem(button);

   121     }

   122     m_currentSelectedIndex = -1;

   123 }

   124 

   125 void Menu::themeChange()

   126 {

   127     QPixmap pixmap = Theme::p()->pixmap("status_field_middle.svg", 

   128             QSize(MinMenuItemWidth, MinMenuItemHeight));

   129     

   130     for(int i = 0; i < m_ButtonContainer->count(); i++) {

   131         Button* button = m_ButtonContainer->at(i);

   132         button->setBackground(pixmap);

   133     }

   134     update();

   135 }

   136 

   137 void Menu::keyPressEvent(QKeyEvent *event)

   138 {

   139     //S60 3.x specific

   140     if(event->key() == 16777235 ) { //Up Arrow

   141         if(m_currentSelectedIndex > 0) { //One step up

   142             Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   143             button->select(false);

   144             button->update();

   145             

   146             m_currentSelectedIndex--;

   147             button = m_ButtonContainer->at(m_currentSelectedIndex);

   148             button->select(true);

   149             button->update();

   150         }

   151         else { //Jump to bottom

   152             if(m_currentSelectedIndex >= 0) {

   153                Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   154                button->select(false);

   155                button->update();

   156            }

   157             m_currentSelectedIndex = m_ButtonContainer->count() -1;

   158             if(m_currentSelectedIndex >= 0) {

   159                 Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   160                 button->select(true);

   161                 button->update();

   162             }

   163         }

   164     }

   165     

   166     if(event->key() == 16777237 ) { //Down Arrow

   167         if (m_currentSelectedIndex < m_ButtonContainer->count()-1) { //One step down

   168             if(m_currentSelectedIndex >= 0) {

   169                 Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   170                 button->select(false);

   171                 button->update();

   172             }

   173             m_currentSelectedIndex++;

   174             Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   175             button->select(true);

   176             button->update();

   177         }

   178         else { //Jump to top

   179             if(m_currentSelectedIndex >= 0) {

   180                 Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   181                 button->select(false);

   182                 button->update();

   183                 m_currentSelectedIndex = 0;

   184                 button = m_ButtonContainer->at(m_currentSelectedIndex);

   185                 button->select(true);

   186                 button->update();

   187             }

   188         }

   189     }

   190     

   191     if(event->key() == 17825792 || event->key() == 16842752 || //LSK, center key or enter

   192             event->key() == 16777221 ) { 

   193         if(m_currentSelectedIndex >= 0) {

   194             Button* button = m_ButtonContainer->at(m_currentSelectedIndex);

   195             button->click();

   196         }

   197     }

   198     

   199     if(event->key() == 17825793 ) { //RSK

   200         menuShowHide();

   201     }

   202 }