1 | /* |
2 | * Copyright (c) 2010 Ni Hui <shuizhuyuanluo@126.com> |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by |
6 | * the Free Software Foundation; either version 2 of the License, or |
7 | * (at your option) any later version. |
8 | |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | */ |
18 | |
19 | #ifndef PIECE_H |
20 | #define PIECE_H |
21 | |
22 | #include <KGameRenderedObjectItem> |
23 | |
24 | class QGraphicsLineItem; |
25 | class QGraphicsSceneMouseEvent; |
26 | /** |
27 | * This class represents a single piece on the game scene. |
28 | * It emits signals when clicked. |
29 | */ |
30 | class Piece : public KGameRenderedObjectItem |
31 | { |
32 | Q_OBJECT |
33 | public: |
34 | /** Constructor */ |
35 | explicit Piece( KGameRenderer* renderer, int x, int y, int color, QGraphicsItem* parent = 0 ); |
36 | /** Destructor */ |
37 | ~Piece(); |
38 | /** Reimplemented for using bounding rect for detecting hovering and mouse clicking */ |
39 | virtual QPainterPath shape() const; |
40 | /** The current column in the game scene, from left to right, starts from 0 */ |
41 | int m_x; |
42 | /** The current row in the game scene, from top to bottom, starts from 0 */ |
43 | int m_y; |
44 | /** The color of the piece */ |
45 | const int m_color; |
46 | /** The bound line graphics item on the right side */ |
47 | QGraphicsLineItem* const m_rightLine; |
48 | /** The bound line graphics item on the bottom side */ |
49 | QGraphicsLineItem* const m_bottomLine; |
50 | /** The highlight graphics item overlapped */ |
51 | KGameRenderedObjectItem* const m_highlighter; |
52 | Q_SIGNALS: |
53 | /** Emitted when this piece is clicked */ |
54 | void pieceClicked( int x, int y ); |
55 | /** Emitted when this piece is hovered */ |
56 | void pieceHovered( int x, int y ); |
57 | /** Emitted when this piece is unhovered */ |
58 | void pieceUnhovered( int x, int y ); |
59 | protected: |
60 | /** Reimplemented for emitting signals if this piece is hovered */ |
61 | virtual void hoverEnterEvent( QGraphicsSceneHoverEvent* event ); |
62 | /** Reimplemented for emitting signals if this piece is unhovered */ |
63 | virtual void hoverLeaveEvent( QGraphicsSceneHoverEvent* event ); |
64 | /** Reimplemented for emitting signals if any mouse click event */ |
65 | virtual void mousePressEvent( QGraphicsSceneMouseEvent* event ); |
66 | }; |
67 | |
68 | #endif // PIECE_H |
69 | |