File indexing completed on 2024-05-05 04:02:56 

0001 /*
0002     SPDX-FileCopyrightText: 2010 Ni Hui <shuizhuyuanluo@126.com>
0003 
0004     SPDX-License-Identifier: GPL-2.0-or-later
0005 */
0006 
0007 #ifndef PIECE_H
0008 #define PIECE_H
0009 
0010 #include <KGameRenderedGraphicsObject>
0011 
0012 class QGraphicsLineItem;
0013 class QGraphicsSceneMouseEvent;
0014 /**
0015  * This class represents a single piece on the game scene.
0016  * It emits signals when clicked.
0017  */
0018 class Piece : public KGameRenderedGraphicsObject
0019 {
0020     Q_OBJECT
0021     public:
0022         /** Constructor */
0023         explicit Piece( KGameGraphicsViewRenderer* renderer, int x, int y, int color, QGraphicsItem* parent = nullptr );
0024         /** Destructor */
0025         ~Piece() override;
0026         /** Reimplemented for using bounding rect for detecting hovering and mouse clicking */
0027         QPainterPath shape() const override;
0028         /** The current column in the game scene, from left to right, starts from 0 */
0029         int m_x;
0030         /** The current row in the game scene, from top to bottom, starts from 0 */
0031         int m_y;
0032         /** The color of the piece */
0033         const int m_color;
0034         /** The bound line graphics item on the right side */
0035         QGraphicsLineItem* const m_rightLine;
0036         /** The bound line graphics item on the bottom side */
0037         QGraphicsLineItem* const m_bottomLine;
0038         /** The highlight graphics item overlapped */
0039         KGameRenderedGraphicsObject* const m_highlighter;
0040     Q_SIGNALS:
0041         /** Emitted when this piece is clicked */
0042         void pieceClicked( int x, int y );
0043         /** Emitted when this piece is hovered */
0044         void pieceHovered( int x, int y );
0045         /** Emitted when this piece is unhovered */
0046         void pieceUnhovered( int x, int y );
0047     protected:
0048         /** Reimplemented for emitting signals if this piece is hovered */
0049         void hoverEnterEvent( QGraphicsSceneHoverEvent* event ) override;
0050         /** Reimplemented for emitting signals if this piece is unhovered */
0051         void hoverLeaveEvent( QGraphicsSceneHoverEvent* event ) override;
0052         /** Reimplemented for emitting signals if any mouse click event */
0053         void mousePressEvent( QGraphicsSceneMouseEvent* event ) override;
0054 };
0055 
0056 #endif // PIECE_H