datebook.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#define QTOPIA_INTERNAL_FD

#include "datebook.h"
#include "dayview.h"
#include "datebooksettings.h"
#include "datebookweek.h"
#include "dateentryimpl.h"
#include "monthview.h"
#include "finddialog.h"

#include <qtopia/qpeapplication.h>
#include <qtopia/global.h>
#include <qtopia/config.h>
#include <qtopia/qpedebug.h>
#include <qtopia/pim/event.h>
#ifdef Q_WS_QWS
#include <qtopia/ir.h>
#endif
#include <qtopia/qpemenubar.h>
#include <qtopia/qpemessagebox.h>
#include <qtopia/resource.h>
#include <qtopia/sound.h>
#include <qtopia/timestring.h>
#include <qtopia/qpetoolbar.h>
#include <qtopia/tzselect.h>
#include <qtopia/xmlreader.h>
#include <qtopia/applnk.h>
#include <qtopia/pim/private/eventio_p.h>

#include <qaction.h>
#include <qtimer.h>
#include <qdatetime.h>
#include <qdialog.h>
#include <qdir.h>
#include <qfile.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qmessagebox.h>
#include <qpopupmenu.h>
#include <qpushbutton.h>
#include <qtextcodec.h>
#include <qtextstream.h>
#include <qtl.h>
#include <qwidgetstack.h>
#include <qvbox.h>
#include <qregexp.h>
//#ifdef QWS
////#include <qwindowsystem_qws.h>
////#include <qcopchannel_qws.h>
////#endif
#include <qarray.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>

#ifndef Q_OS_WIN32
#include <unistd.h>
#endif

#include <stdlib.h>

#define DAY 1
#define WEEK 2
#define MONTH 3


// Make QScrollView in AutoOneFit mode use the minimum horizontal size
// instead of the sizeHint() so that the widgets fit horizontally.
class VScrollBox : public QVBox
{
public:
    VScrollBox( QWidget *parent, const char *name=0 )
	: QVBox( parent, name ) {}
#if defined(_WS_QWS_)
    QSize sizeHint() const {
	int width = QVBox::sizeHint().width();
	if ( width > qApp->desktop()->width()-style().scrollBarExtent().width() )
	    width = qApp->desktop()->width()-style().scrollBarExtent().width();
	width = QMAX(width, QVBox::minimumSize().width());
	return QSize( width, QVBox::sizeHint().height());
    }
#endif
};


DateBook::DateBook( QWidget *parent, const char *, WFlags f )
    : QMainWindow( parent, "datebook", f ),
      aPreset( FALSE ),
      presetTime( -1 ),
      startTime( 8 ), // an acceptable default
      syncing(FALSE),
      inSearch(FALSE),
      exceptionMb(0)
{
    int timingLoad, timingOther;

    QTime t;
    t.start();
    db = new DateBookTable(this);
    timingLoad = t.elapsed();
    loadSettings();
    setCaption( tr("Calendar") );
    setIcon( Resource::loadPixmap( "DateBook" ) );

    bool thinScreen = QApplication::desktop()->width() < 200;

    setToolBarsMovable( FALSE );
    setBackgroundMode( PaletteButton );

    QPEToolBar *bar = new QPEToolBar( this );
    bar->setHorizontalStretchable( TRUE );

    QPEMenuBar *mb = new QPEMenuBar( bar );
    mb->setMargin( 0 );

#ifdef QTOPIA_NO_POINTER_INPUT
    QPEToolBar *sub_bar=0;
#else
    QPEToolBar *sub_bar = new QPEToolBar(this);
#endif;

    QPopupMenu *eventMenu = new QPopupMenu( this );
    QPopupMenu *view = new QPopupMenu( this );

    mb->insertItem( tr( "Event" ), eventMenu );
    mb->insertItem( tr( "View" ), view );

    QActionGroup *g = new QActionGroup( this );
    g->setExclusive( TRUE );

    QAction *a = new QAction( tr( "New Event" ), Resource::loadIconSet( "new" ),
                              QString::null, 0, this, 0 );
    a->setWhatsThis( tr("Create a new event") );
    connect( a, SIGNAL( activated() ), this, SLOT( fileNew() ) );
    if (sub_bar) a->addTo( sub_bar );
    a->addTo( eventMenu );

    editAction = new QAction( tr( "Edit Event" ),
	    Resource::loadIconSet( "edit" ), QString::null, 0, this, 0 );
    connect( editAction, SIGNAL( activated() ), this, SLOT( editCurrentEvent() ) );
    editAction->setWhatsThis( tr("Edit the selected event") );
    editAction->addTo( eventMenu );

    removeAction = new QAction( tr( "Delete Event" ),
	    Resource::loadIconSet( "trash" ), QString::null, 0, this, 0 );
    connect( removeAction, SIGNAL( activated() ), this, SLOT( removeCurrentEvent() ) );
    removeAction->setWhatsThis( tr("Delete the selected event") );
    removeAction->addTo( eventMenu );

#ifdef Q_WS_QWS
    if (Ir::supported()) {
	beamAction = new QAction( tr( "Beam Event" ),
	    Resource::loadIconSet( "beam" ), QString::null, 0, this, 0 );
	connect( beamAction, SIGNAL( activated() ),
	    this, SLOT( beamCurrentEvent() ) );
	beamAction->setWhatsThis( tr("Beam the selected event") );
	beamAction->addTo( eventMenu );
    }
#endif

    eventMenu->insertSeparator();

    /*
    a = new QAction( tr( "Delete Events" ), Resource::loadIconSet( "trash" ),
                            QString::null, 0, this, 0 );
    connect( a, SIGNAL( activated() ), this, SLOT( fileNew() ) );
    a->addTo( sub_bar );
    a->addTo( eventMenu );
    */

    a = new QAction( tr( "Today" ), Resource::loadIconSet( "today" ), QString::null, 0, g, 0 );
    connect( a, SIGNAL( activated() ), this, SLOT( slotToday() ) );
    a->setWhatsThis( tr("Show today's events") );
    if (sub_bar) a->addTo( sub_bar );
    a->addTo( view );

    view->insertSeparator();
    if (sub_bar) sub_bar->addSeparator();

    a = new QAction( tr( "Day", "day, not date" ), Resource::loadIconSet( "day" ), QString::null, 0, g, 0 );
    a->setWhatsThis( tr("Show selected day's events") );
    if (!thinScreen)
	if (sub_bar) a->addTo( sub_bar );
    a->addTo( view );
    a->setToggleAction( TRUE );
    a->setOn( TRUE );
    dayAction = a;
    connect( dayAction, SIGNAL( activated() ), this, SLOT( viewDay() ) );
    a = new QAction( tr( "Week" ), Resource::loadIconSet( "week" ), QString::null, 0, g, 0 );
    connect( a, SIGNAL( activated() ), this, SLOT( viewWeek() ) );
    a->setWhatsThis( tr("Show selected week's events") );
    if (!thinScreen)
	if (sub_bar) a->addTo( sub_bar );
    a->addTo( view );
    a->setToggleAction( TRUE );
    weekAction = a;
    a = new QAction( tr( "Month" ), Resource::loadIconSet( "month" ), QString::null, 0, g, 0 );
    connect( a, SIGNAL( activated() ), this, SLOT( viewMonth() ) );
    a->setWhatsThis( tr("Show selected month's events") );
    if (!thinScreen)
	a->addTo( sub_bar );
    a->addTo( view );
    a->setToggleAction( TRUE );
    monthAction = a;

    a = new QAction( tr( "Find Event" ), Resource::loadIconSet( "find" ), QString::null, 0, g, 0 );
    connect( a, SIGNAL(activated()), this, SLOT(slotFind()) );
    //a->addTo( sub_bar );
    a->addTo( eventMenu );

    view->insertSeparator();
    a = new QAction( tr( "Settings..." ), QString::null, 0, g );
    connect( a, SIGNAL( activated() ), this, SLOT( showSettings() ) );
    a->addTo( view );

    views = new QWidgetStack( this );
    setCentralWidget( views );

    dayView = 0;
    weekView = 0;
    monthView = 0;

    timingOther = t.elapsed();
    viewToday();
    TimeString::connectChange(this, SLOT(changeClock()) );
    connect( qApp, SIGNAL(weekChanged(bool)),
             this, SLOT(changeWeek(bool)) );

    connect( qApp, SIGNAL( appMessage(const QCString &, const QByteArray &) ), 
	    this, SLOT( appMessage(const QCString &, const QByteArray &) ) );

    connect( qApp, SIGNAL( timeChanged() ), 
	    this, SLOT( checkToday() ) );

    connect( qApp, SIGNAL( timeChanged() ), 
	    this, SLOT( updateAlarms() ) );

    connect( qApp, SIGNAL( flush() ), 
	    this, SLOT( flush() ) );

    connect( qApp, SIGNAL( reload() ), 
	    this, SLOT( reload() ) );

    // start Timer
    midnightTimer = new QTimer(this);
    connect(midnightTimer, SIGNAL(timeout()), this, SLOT(checkToday()));
    // 2 seconds after midnight
    midnightTimer->start(
	    (QTime::currentTime().secsTo(QTime(23,59,59)) + 3)
	    * 1000 );
}

void DateBook::checkToday()
{
    if ( lastToday != QDate::currentDate() ) {
	if ( lastToday == currentDate() )
	    slotToday();
	else
	    lastToday = QDate::currentDate();
    } else {
	refreshWidgets();
    }

    midnightTimer->start(
	    (QTime::currentTime().secsTo(QTime(23,59,59)) + 3)
	    * 1000 );
}

void DateBook::updateAlarms()
{
    /* 
       time may have gone backwards... but giving the same alarms 
       again won't hurt (server will ignore) so send them all again,
   */
    // no real way to tell if forward or backward, so need to do the lot.
    db->updateAlarms();
}

void DateBook::refreshWidgets()
{
    // update active view!
    if ( dayAction->isOn() )
	dayView->redraw();
    else if ( weekAction->isOn() )
	weekView->redraw();
    else if ( monthAction->isOn() )
	monthView->updateOccurrences();
}

DateBook::~DateBook()
{
}

void DateBook::showSettings()
{
    bool whichclock;
    Config config( "qpe" );
    config.setGroup("Time");
    whichclock = config.readBoolEntry("AMPM");
    
    DateBookSettings frmSettings(whichclock, this);
    frmSettings.setStartTime( startTime );
    frmSettings.setAlarmPreset( aPreset, presetTime );

    if ( QPEApplication::execDialog(&frmSettings) ) {
	aPreset = frmSettings.alarmPreset();
	presetTime = frmSettings.presetTime();
	startTime = frmSettings.startTime();
	if ( dayView )
	    dayView->setDayStarts( startTime );
	if ( weekView )
	    weekView->setDayStarts( startTime );
	saveSettings();

	// make the change obvious
	if ( views->visibleWidget() ) {
	    if ( views->visibleWidget() == dayView )
		dayView->redraw();
	    else if ( views->visibleWidget() == weekView )
		weekView->redraw();
	}
    }
}

void DateBook::fileNew()
{
    newEvent("");
}

QString DateBook::checkEvent(const PimEvent &e)
{
    /* check if overlaps with itself */
    bool checkFailed = FALSE;

    /* check the next 12 repeats. should catch most problems */
    QDate current_date = e.end().date();
    int duration = e.start().date().daysTo(e.end().date());
    PimEvent previous = e;
    for(int i = 0; i < 12; i++)
    {
	bool ok;
	QDateTime next;
	next = e.nextOccurrence(current_date.addDays(1), &ok);
	next.setTime(e.start().time());
	if (!ok)
	    break;  // no more repeats
	if(next < previous.end()) {
	    checkFailed = TRUE;
	    break;
	}
	current_date = next.date().addDays(duration);
    }


    if(checkFailed)
	return tr("Event duration is potentially longer\n"
		  "than interval between repeats.");

    return QString::null;
}

QDate DateBook::currentDate()
{
    if ( dayView && views->visibleWidget() == dayView ) {
	return dayView->currentDate();
    } else if ( weekView && views->visibleWidget() == weekView ) {
        return weekView->currentDate();
    } else if ( monthView && views->visibleWidget() == monthView ) {
	return monthView->selectedDate();
    } else {
	return QDate(); // invalid;
    }
}

void DateBook::viewToday()
{
    lastToday = QDate::currentDate();
    viewDay( lastToday );
}

void DateBook::viewDay(const QDate& dt)
{
    initDay();
    dayAction->setOn( TRUE );
    dayView->selectDate( dt );
    views->raiseWidget( dayView );
    dayView->setFocus();
    dayView->redraw();

    updateIcons();
}

void DateBook::viewDay()
{
    viewDay( currentDate() );
}

void DateBook::viewWeek()
{
    viewWeek( currentDate() );
}

void DateBook::viewWeek( const QDate& dt )
{
    initWeek();
    weekAction->setOn( TRUE );
    weekView->selectDate( dt );
    views->raiseWidget( weekView );
    weekView->redraw();

    updateIcons();
}

void DateBook::viewMonth()
{
    viewMonth( currentDate() );
}

void DateBook::viewMonth( const QDate& dt)
{
    initMonth();
    monthAction->setOn( TRUE );
    monthView->setDate( dt );
    views->raiseWidget( monthView );
    monthView->updateOccurrences();

    updateIcons();
}