datepicker.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
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**********************************************************************/

#include <qtopia/config.h>
#include <qtopia/resource.h>
#include <qtopia/qpeapplication.h>
#include <qtopia/timestring.h>
#include <qtopia/global.h>

#include <qtoolbutton.h>
#include <qdatetime.h>
#include <qspinbox.h>
#include <qcombobox.h>
#include <qlabel.h>
#include <qpainter.h>
#include <qpopupmenu.h>
#include <qwhatsthis.h>
#include <qlayout.h>
#include <qstyle.h>

#include "datepicker.h"
#include <qtopia/calendar.h>

#ifdef QTOPIA_PHONE
extern bool mousePreferred; // can't call Global::mousePreferred in libqtopia2 from libqtopia1
#endif

class DatePickerHeader : public QHBox
{
    Q_OBJECT

public:
    DatePickerHeader( QWidget *parent = 0, const char *name = 0 );
    ~DatePickerHeader();
    void setDate( int year, int month );

signals:
    void dateChanged( int year, int month );

protected slots:
    //void keyPressEvent(QKeyEvent *e ) {
	//e->ignore();
    //}

private slots:
    void updateDate();
    void firstMonth();
    void lastMonth();
    void monthBack();
    void monthForward();

private:
#ifndef QTOPIA_PHONE
    QToolButton *begin, *back, *next, *end;
#endif
    QComboBox *month;
    QSpinBox *year;
    QLabel *currentMonth;
    int focus;
};

class DatePickerTable : public QTable
{
    Q_OBJECT

public:
    DatePickerTable( QWidget *parent = 0, const char *name = 0);
    ~DatePickerTable();

    QSize minimumSizeHint() const { return sizeHint(); }
    QSize minimumSize() const { return sizeHint(); }

    void setWeekStartsMonday( bool monday );
    bool weekStartsMonday() const { return onMonday; }

    void paintCell(QPainter * p, int row, int col,
	    const QRect & cr, bool selected);

#ifdef QTOPIA_PHONE
    void paintFocus(QPainter *p, const QRect &r);
#endif

    void updateContents()
    {
	QScrollView::updateContents(0,0,contentsWidth(), contentsHeight());
    }
signals:
    void clickedPos(int, int);

public slots:
    void timeStringChanged();

protected:
    void keyPressEvent( QKeyEvent *e );

    QSize sizeHint() const;
    void contentsMousePressEvent(QMouseEvent *e)
    {
	pressedCol = columnAt(e->x());
	pressedRow = rowAt(e->y());
    }

    void contentsMouseReleaseEvent(QMouseEvent *e)
    {
	int c = columnAt(e->x());
	int r = rowAt(e->y());

	if (c == pressedCol && r == pressedRow)
	    emit clickedPos(r, c);

	pressedCol = pressedRow = -1;
    }

    QWidget *createEditor(int,int,bool) const { return 0; }


private:
    void setupLabels();

    bool onMonday;
    int pressedRow, pressedCol;
};

void DatePickerTable::timeStringChanged()
{
    setupLabels();
}

DatePickerHeader::DatePickerHeader( QWidget *parent, const char *name )
    : QHBox( parent, name )
{
    setBackgroundMode( PaletteButton );
#ifdef QTOPIA_PHONE
    if (!mousePreferred) {
	currentMonth = new QLabel(this);
	currentMonth->setAlignment(AlignHCenter);
    } else {
#endif
#ifndef QTOPIA_PHONE
    begin = new QToolButton( this );
    begin->setIconSet( Resource::loadIconSet( "start" ) );
    begin->setAutoRaise( TRUE );
    begin->setFixedSize( begin->sizeHint() );
    QWhatsThis::add( begin, tr("Show January in the selected year") );

    back = new QToolButton( this );
    back->setIconSet( Resource::loadIconSet( "back" ) );
    back->setAutoRaise( TRUE );
    back->setFixedSize( back->sizeHint() );
    QWhatsThis::add( back, tr("Show the previous month") );
#endif
    month = new QComboBox( FALSE, this );
    for ( int i = 0; i < 12; ++i )
	month->insertItem( Calendar::nameOfMonth( i + 1 ) );

    // this is almost certainly wrong on the other end.
    // date is a uint + 1752 some day.  Thats a lot of days, 11 M years or so.
    year = new QSpinBox( 1753, 3000, 1, this );
#ifndef QTOPIA_PHONE
    next = new QToolButton( this );
    next->setIconSet( Resource::loadIconSet( "forward" ) );
    next->setAutoRaise( TRUE );
    next->setFixedSize( next->sizeHint() );
    QWhatsThis::add( next, tr("Show the next month") );

    end = new QToolButton( this );
    end->setIconSet( Resource::loadIconSet( "finish" ) );
    end->setAutoRaise( TRUE );
    end->setFixedSize( end->sizeHint() );
    QWhatsThis::add( end, tr("Show December in the selected year") );
#endif

    connect( month, SIGNAL( activated(int) ),
	     this, SLOT( updateDate() ) );
    connect( year, SIGNAL( valueChanged(int) ),
	     this, SLOT( updateDate() ) );
#ifndef QTOPIA_PHONE
    connect( begin, SIGNAL( clicked() ),
	     this, SLOT( firstMonth() ) );
    connect( end, SIGNAL( clicked() ),
	     this, SLOT( lastMonth() ) );
    connect( back, SIGNAL( clicked() ),
	     this, SLOT( monthBack() ) );
    connect( next, SIGNAL( clicked() ),
	     this, SLOT( monthForward() ) );
    back->setAutoRepeat( TRUE );
    next->setAutoRepeat( TRUE );
#endif
#ifdef QTOPIA_PHONE
    }
#endif
}


DatePickerHeader::~DatePickerHeader()
{

}

void DatePickerHeader::updateDate()
{
#ifdef QTOPIA_PHONE
    if (mousePreferred)
#endif
    emit dateChanged( year->value(), month->currentItem() + 1 );
}

void DatePickerHeader::firstMonth()
{
#ifdef QTOPIA_PHONE
    if (mousePreferred)
#endif
	emit dateChanged( year->value(), 1 );
}

void DatePickerHeader::lastMonth()
{
#ifdef QTOPIA_PHONE
    if (mousePreferred)
#endif
	emit dateChanged( year->value(), 12 );
}


// don't set values.. this will be done on the return hit from monthview.
void DatePickerHeader::monthBack()
{
#ifdef QTOPIA_PHONE
    if (mousePreferred) {
#endif
	if ( month->currentItem() > 0 ) {
	    emit dateChanged( year->value(), month->currentItem() );
	} else {
	    emit dateChanged( year->value() - 1, 12 );
	}
#ifdef QTOPIA_PHONE
    }
#endif
}

void DatePickerHeader::monthForward()
{
#ifdef QTOPIA_PHONE
    if (mousePreferred) {
#endif
	if ( month->currentItem() < 11 ) {
	    emit dateChanged( year->value(), month->currentItem() + 2 );
	} else {
	    emit dateChanged( year->value() + 1, 1);
	}
#ifdef QTOPIA_PHONE
    }
#endif
}

void DatePickerHeader::setDate( int y, int m )
{
#ifdef QTOPIA_PHONE
    if (!mousePreferred) {
	currentMonth->setText(
		tr( QString("%1 %2").arg(Calendar::nameOfMonth( m )).arg(y),
		    "Header for monthview in phone, 1=month name (full), 2=year" ));
    } else {
#endif
    blockSignals(TRUE);
    year->setValue( y );
    month->setCurrentItem( m - 1 );
    blockSignals(FALSE);
#ifdef QTOPIA_PHONE
    }
#endif
}

//---------------------------------------------------------------------------
DatePickerTable::DatePickerTable( QWidget *parent, const char *name)
    : QTable( 6, 7, parent, name )
{
    pressedRow = pressedCol = -1;

    Config cfg( "qpe" );
    cfg.setGroup( "Time" );
    onMonday = cfg.readBoolEntry( "MONDAY" );

    horizontalHeader()->setResizeEnabled( FALSE );
    // we have to do this here... or suffer the consequences later...
    int i;
    for ( i = 0; i < 7; i++ ){
	// 30 should be replaced with something dependent
	// on size needed to show label text.
	horizontalHeader()->resizeSection( i, 30 );
	setColumnStretchable( i, TRUE );
    }
    setupLabels();

    verticalHeader()->hide();
    setLeftMargin( 0 );
    for ( i = 0; i < 6; ++i )
	    setRowStretchable( i, TRUE );

    setSelectionMode( NoSelection );

    setVScrollBarMode( AlwaysOff );
    setHScrollBarMode( AlwaysOff );
}

DatePickerTable::~DatePickerTable()
{
}


QSize DatePickerTable::sizeHint() const
{
    return QSize( columnWidth(0) * 7 + 4, rowHeight(0)*6 + horizontalHeader()->sizeHint().height());
}

void DatePickerTable::setWeekStartsMonday( bool monday )
{
    onMonday = monday;
    setupLabels();
}

void DatePickerTable::paintCell(QPainter * p, int row, int col,
	const QRect & cr, bool selected)
{
#if defined(Q_WS_WIN)
    const QColorGroup &cg = ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus ) ? palette().inactive() : colorGroup() );
#else
    const QColorGroup &cg = colorGroup();
#endif

    ((QPEDatePicker *)parentWidget())->paintCell(row, col, p, cr, selected, cg);
#ifdef QTOPIA_DESKTOP
    if ( currentRow() == row && currentColumn() == col ) {
	p->drawRect( 0, 0, cr.width()-1, cr.height()-1 );
    }