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/*
* This file is part of GNUDoQ, Copyright (C) 2005-2006 Luc Vo Van
*
* GNUDoQ 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, or (at your option) any
* later version.
*
* GNUDoQ 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 GNUDoQ; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Class : Number widget
* Author : Luc Vo Van
* Original Date : September 2005
*
**/
#ifndef GNUDOQBOXWIDGET_H
#define GNUDOQBOXWIDGET_H
#include <QWidget>
#include <QColor>
#include <QPainterPath>
/**
* Number input widget. 81 instances of these widgets are used to form the
* grid. Clicking them changes their values, they can be editable by the
* player or not (depending on their editable() propery), can be marked
* erroneous, etc.
*
* This widget is also called a 'box'.
*/
class GNUDoQBoxWidget : public QWidget
{
Q_OBJECT
public:
/**
* Class constructor. Each GNUDoQBoxWidget must belong to a group,
* which is one of the 9 3x3 zones of the grid. The numbers are
* as follows:
*
* 012
* 345
* 678
*
* @param iGroup Group number to which this box belongs
* @param parent Parent widget
*/
GNUDoQBoxWidget(int iGroup,QWidget *parent = 0);
/**
* Returns the value of this box.
*
* @see setValue(const int)
* @return the value of this box, 0 if no value is displayed
*/
int value() { return m_iValue; }
/*
* Returns a value indicating wether or not this box is marked erroneous.
*
* @see setErroneous(const bool)
* @return true if the box is erroneous, false otherwise
*/
bool erroneous() { return m_bErroneous; }
/**
* Returns a value indicating wether or not this box is editable by the
* player.
*
* @see setEditable(const bool)
* @return true if the box is editable, false otherwise
*/
bool editable() { return m_bEditable; }
/**
* Returns a value indicating wether or not this box's value was
* determined by the GNUDoku solver (after the player presses the
* 'Solve' button)
*
* @see setCpusolved(const bool)
* @return true if the box's value was determined by the GNUDoku
* solver, false otherwise
*/
bool cpusolved() { return m_bCpusolved; }
public slots:
/**
* Sets the value of this box.
*
* @param iValue value to give this box (0 if no value is to be displayed)
* @see value()
*/
void setValue(const int iValue);
/**
* Sets a value indicating if the box contains an erroneous value.
*
* @param bErroneous true to set the box to erroneous, false otherwise
* @see erroneous()
*/
void setErroneous(const bool bErroneous);
/**
* Sets a value indicating wether or not the box's value can be edited
* by the player.
*
* @param bEditable true to make the box player editable, false otherwise
* @see editable()
*/
void setEditable(const bool bEditable);
/**
* Sets a value indicating wether or not the box's value was determined
* by the GNUDoku solver.
*
* @param bCpuSolved true if the value was determined by the GNUDoku solver
* false otherwise (value set by the player)
* @see cpusolved()
*/
void setCpusolved(const bool bCpusolved);
signals:
/**
* Emitted whenever the value of this box changes
*
* @see setValue(const int)
*/
void valueChanged();
protected:
/**
* Draws the box
* @param event QPaintEvent
*/
void paintEvent(QPaintEvent *event);
/**
* Reacts to keypresses: numbers set values, backspace/del removes
* the current value (sets it to 0).
*
* @param event QKeyEvent
* @see setValue(const int)
*/
void keyPressEvent(QKeyEvent *event);
/**
* Reacts to clicks, left click increases the value, right click
* decreases, middle click remove the current value (sets it to 0)
*
* @param event QMouseEvent
* @see setValue(const int)
*/
void mousePressEvent(QMouseEvent *event);
/**
* Reacts to mouse wheel events. Rolling up increases the value, rolling
* down decreases it.
*
* @param event QWheelEvent
* @see setValue(const int)
*/
void wheelEvent(QWheelEvent * event);
/**
* Sets m_bHovered to true, to highlight the box when hovered by the
* mouse cursor.
*
* @param event QEvent
*/
void enterEvent(QEvent *event);
/**
* Sets m_bHovered to false, to dehighlight the box when not hovered by
* the mouse cursor anymore.
*
* @param event QEvent
*/
void leaveEvent(QEvent *event);
private:
// Properties value holders
int m_iValue;
int m_iGroup;
bool m_bHovered;
bool m_bErroneous;
bool m_bEditable;
bool m_bCpusolved;
// Colors for each group (3x3 zones)
static const QColor groupColor[];
};
#endif
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