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#include <qaction.h> // action
#include <qmenubar.h> // menubar
#include <qtoolbar.h> // toolbar
#include <qlabel.h> // a label
#include <qpushbutton.h> // the header file for the QPushButton
#include <qlayout.h>
#include <qpe/qpeapplication.h> // the QPEApplication
#include <qpe/resource.h>
#include <opie/oapplicationfactory.h> // a template + macro to save the main method and allow quick launching
#include "simple.h"
/*
* implementation of simple
*/
/*
* The factory is used for quicklaunching
* It needs a constructor ( c'tor ) with at least QWidget, const char* and WFlags as parameter and a static QString appName() matching the TARGET of the .pro
*
* Depending on the global quick launch setting this will create
* either a main method or one for our component plugin system
*/
OPIE_EXPORT_APP( OApplicationFactory<MainWindow> )
MainWindow::MainWindow(QWidget *parent, const char* name, WFlags fl )
: QMainWindow( parent, name, fl ) {
setCaption(tr("My MainWindow") );
setIcon( Resource::loadPixmap("new") );
/*
* out mainwindow should have a menubar
* a toolbar, a mainwidget and use Resource
* to get the IconSets
*/
/*
* we initialize the GUI in a different methid
*/
initUI();
Simple *simple = new Simple( this );
setCentralWidget( simple );
/*
* If you use signal and slots do not include the parameter
* names inside
* so SIGNAL(fooBar(int) ) and NOT SIGNAL(fooBar(int foo) )
*/
/*
* We connect the activation of our QAction
* to the slot connected to the firebutton
* We could also connect the signal to the clicked
* signal of the button
*/
connect(m_fire, SIGNAL(activated() ),
simple, SLOT(slotFire() ) );
}
MainWindow::~MainWindow() {
// again nothing to delete because Qt takes care
}
/*
* set Document is a special function used by Document
* centric applications.
* In example if Opie receives a Todo via IrDa it uses
* setDocument via QCOP the IPC system to load the card
* Or If you decide to open a file in filemanager with textedit
* setDocument is called via IPC in textedit.
* Also any call to QPE/Application/xyz and xyz is currently not running
* leads to the start of xyz and delivering of the QCOP call
* But more on QCOP in the next application
*/
void MainWindow::setDocument( const QString& /*str*/ ) {
// in our case empty but you should see if it is a direct
// file request or if it is a DocLnk.
// A DocLnk is Link to an Document so you would end up
// opening the document behind the file you got
}
/*
* Two new concepts with this Method
* 1. QAction. An action can be grouped and emits
* an activated signal. Action a universal useable
* you can just plug/addTo in most Qt widgets. For example
* the same action can be plugged into a ToolBar, MenuBar,
* QPopupMenu and other widgets but you do not need to worry
* about it
*
* 2. an IconSet contains pixmaps and provides them scaled down, scaled up
* enabled and disabled. SO if you use QIConSet and the toolbar
* size changes to use big pixmaps you will not use upscaled icons
* but the right ones thanks to QIconSet and Resource
*/
void MainWindow::initUI() {
/*
* We want to provde a File Menu with Quit as option
* and a Fire Toolbutton ( QAction )
* So we need two actions
* A toolbar and a popupMenu
*/
setToolBarsMovable( false );
/*
*We don't want the static toolbar but share it with the
* toolbar on small screens
*/
QToolBar *menuBarHolder = new QToolBar( this );
/* we allow the menubarholder to become bigger than
* the screen width and to offer a > for the additional items
*/
menuBarHolder->setHorizontalStretchable( true );
QMenuBar *mb = new QMenuBar( menuBarHolder );
QToolBar *tb = new QToolBar( this );
QPopupMenu *fileMenu = new QPopupMenu( this );
/*
* we create our first action with the Text Quit
* a IconSet, no menu name, no acceleration ( keyboard shortcut ),
* with parent this, and name "quit_action"
*/
/*
* Note if you want a picture out of the inline directory
* you musn't prefix inline/ inline means these pics are built in
* into libqpe so the name without ending and directory is enough
*/
QAction *a = new QAction( tr("Quit"), Resource::loadIconSet("quit_icon"),
QString::null, 0, this, "quit_action" );
/*
* Connect quit to the QApplication quit slot
*/
connect(a, SIGNAL(activated() ),
qApp, SLOT(quit() ) );
a->addTo( fileMenu );
a = new QAction(tr("Fire"),
Resource::loadIconSet("new"),
QString::null, 0, this, "fire_button");
/* see the power? */
a->addTo( fileMenu );
a->addTo( tb );
m_fire = a;
mb->insertItem(tr("File"), fileMenu );
}
Simple::Simple( QWidget* parent, const char* name, WFlags fl )
: QWidget( parent, name, fl ) {
/*
* sets the caption of this toplevel widget
* put all translatable string into tr()
*/
setCaption(tr("My Simple Application") );
/*
* A simple vertical layout
* either call layout->setAutoAdd( true )
* or use layout->addWidget( wid ) to add widgets
*/
QVBoxLayout *layout = new QVBoxLayout( this );
layout->setSpacing( 8 );
layout->setMargin( 11 );
/*
* creates a label
* The first parameter is this widget so the Label is a child
* of us and will be deleted when we're deleted.
*/
QLabel *lbl = new QLabel( this, "a name for the label" );
lbl->setText( tr("Click on the button or follow the white rabbit") );
layout->addWidget( lbl );
/* creates a button as child of this widget */
m_button = new QPushButton(this);
/*
* another way to call tr. The first parameter is the string
* to translate and the second a hint to the translator
*/
m_button->setText( tr("Fire", "translatable quit string" ) );
layout->addWidget( m_button );
/*
* Now we bring the action into it. The power of qt is the dynamic
* signal and slots model
* Usage is simple connect m_buttons clicked signal to our
* slotQuit slot.
* We could also have connected a SIGNAL to a SIGNAL or the clicked
* signal directly to qApp and SLOT(quit() )
*/
connect( m_button, SIGNAL(clicked() ),
this, SLOT( slotFire() ) );
}
/*
* Our destructor is empty because all child
* widgets and layouts will be deleted by Qt.
* Same applies to QObjects
*/
Simple::~Simple() {
}
void Simple::slotFire() {
/*
* NOTE: Simple is now a child window of MainWindow
* close will hide() Simple and not delete it. But as
* the mainwindow is shown all children will be shown as well
*/
close();
}
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