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/*
* timeedit.h - time-of-day edit widget, with AM/PM shown depending on locale
* Program: kalarm
* Copyright (C) 2004 by David Jarvie <software@astrojar.org.uk>
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef TIMEEDIT_H
#define TIMEEDIT_H
#include <qdatetime.h>
#include <qhbox.h>
class ComboBox;
class TimeSpinBox;
/**
* @short Widget to enter a time of day.
*
* The TimeEdit class provides a widget to enter a time of day in hours and minutes,
* using a 12- or 24-hour clock according to the user's locale settings.
*
* It displays a TimeSpinBox widget to enter hours and minutes. If a 12-hour clock is
* being used, it also displays a combo box to select am or pm.
*
* TimeSpinBox displays a spin box with two pairs of spin buttons, one for hours and
* one for minutes. It provides accelerated stepping using the spin buttons, when the
* shift key is held down (inherited from SpinBox2). The default shift steps are 5
* minutes and 6 hours.
*
* The widget may be set as read-only. This has the same effect as disabling it, except
* that its appearance is unchanged.
*
* @author David Jarvie <software@astrojar.org.uk>
*/
class TimeEdit : public QHBox
{
Q_OBJECT
public:
/** Constructor.
* @param parent The parent object of this widget.
* @param name The name of this widget.
*/
explicit TimeEdit(QWidget* parent = 0, const char* name = 0);
/** Returns true if the widget is read only. */
bool isReadOnly() const { return mReadOnly; }
/** Sets whether the widget is read-only for the user. If read-only,
* the time cannot be edited and the spin buttons and am/pm combo box
* are inactive.
* @param readOnly True to set the widget read-only, false to set it read-write.
*/
virtual void setReadOnly(bool readOnly);
/** Returns true if the widget contains a valid value. */
bool isValid() const;
/** Sets whether the edit value is valid.
* If newly invalid, the value is displayed as asterisks.
* If newly valid, the value is set to the minimum value.
* @param valid True to set the value valid, false to set it invalid.
*/
void setValid(bool valid);
/** Returns the entered time as a value in minutes. */
int value() const;
/** Returns the entered time as a QTime value. */
QTime time() const { int m = value(); return QTime(m/60, m%60); }
/** Returns true if it is possible to step the value from the highest value to the lowest value and vice versa. */
bool wrapping() const;
/** Sets whether it is possible to step the value from the highest value to the lowest value and vice versa.
* @param on True to enable wrapping, else false.
*/
void setWrapping(bool on);
/** Returns the minimum value of the widget in minutes. */
int minValue() const;
/** Returns the maximum value of the widget in minutes. */
int maxValue() const;
/** Returns the maximum value of the widget as a QTime value. */
QTime maxTime() const { int mv = maxValue(); return QTime(mv/60, mv%60); }
/** Sets the minimum value of the widget. */
void setMinValue(int minutes);
/** Sets the maximum value of the widget. */
void setMaxValue(int minutes);
/** Sets the maximum value of the widget. */
void setMaxValue(const QTime& time) { setMaxValue(time.hour()*60 + time.minute()); }
public slots:
/** Sets the value of the widget. */
virtual void setValue(int minutes);
/** Sets the value of the widget. */
void setValue(const QTime& t) { setValue(t.hour()*60 + t.minute()); }
signals:
/** This signal is emitted every time the value of the widget changes
* (for whatever reason).
* @param minutes The new value.
*/
void valueChanged(int minutes);
private slots:
void slotValueChanged(int);
void slotAmPmChanged(int item);
private:
void setAmPmCombo(int am, int pm);
TimeSpinBox* mSpinBox; // always holds the 24-hour time
ComboBox* mAmPm;
int mAmIndex; // mAmPm index to "am", or -1 if none
int mPmIndex; // mAmPm index to "pm", or -1 if none
bool mReadOnly; // the widget is read only
};
#endif // TIMEEDIT_H
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