1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* maprenderer.h
* Copyright 2009-2011, Thorbjørn Lindeijer <thorbjorn@lindeijer.nl>
*
* This file is part of libtiled.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef MAPRENDERER_H
#define MAPRENDERER_H
#include "tiled_global.h"
#include <QPainter>
namespace Tiled {
class Layer;
class Map;
class MapObject;
class TileLayer;
/**
* This interface is used for rendering tile layers and retrieving associated
* metrics. The different implementations deal with different map
* orientations.
*/
class TILEDSHARED_EXPORT MapRenderer
{
public:
MapRenderer(const Map *map) : mMap(map) {}
virtual ~MapRenderer() {}
/**
* Returns the size in pixels of the map associated with this renderer.
*/
virtual QSize mapSize() const = 0;
/**
* Returns the bounding rectangle in pixels of the given \a rect given in
* tile coordinates.
*
* This is useful for calculating the bounding rect of a tile layer or of
* a region of tiles that was changed.
*/
virtual QRect boundingRect(const QRect &rect) const = 0;
/**
* Returns the bounding rectangle in pixels of the given \a object, as it
* would be drawn by drawMapObject().
*/
virtual QRectF boundingRect(const MapObject *object) const = 0;
/**
* Returns the shape in pixels of the given \a object. This is used for
* mouse interaction and should match the rendered object as closely as
* possible.
*/
virtual QPainterPath shape(const MapObject *object) const = 0;
/**
* Draws the tile grid in the specified \a rect using the given
* \a painter.
*/
virtual void drawGrid(QPainter *painter, const QRectF &rect) const = 0;
/**
* Draws the given \a layer using the given \a painter.
*
* Optionally, you can pass in the \a exposed rect (of pixels), so that
* only tiles that can be visible in this area will be drawn.
*/
virtual void drawTileLayer(QPainter *painter, const TileLayer *layer,
const QRectF &exposed = QRectF()) const = 0;
/**
* Draws the tile selection given by \a region in the specified \a color.
*
* The implementation can be optimized by taking into account the
* \a exposed rectangle, to avoid drawing too much.
*/
virtual void drawTileSelection(QPainter *painter,
const QRegion ®ion,
const QColor &color,
const QRectF &exposed) const = 0;
/**
* Draws the \a object in the given \a color using the \a painter.
*/
virtual void drawMapObject(QPainter *painter,
const MapObject *object,
const QColor &color) const = 0;
/**
* Returns the tile coordinates matching the given pixel position.
*/
virtual QPointF pixelToTileCoords(qreal x, qreal y) const = 0;
inline QPointF pixelToTileCoords(const QPointF &point) const
{ return pixelToTileCoords(point.x(), point.y()); }
/**
* Returns the pixel coordinates matching the given tile coordinates.
*/
virtual QPointF tileToPixelCoords(qreal x, qreal y) const = 0;
inline QPointF tileToPixelCoords(const QPointF &point) const
{ return tileToPixelCoords(point.x(), point.y()); }
QPolygonF tileToPixelCoords(const QPolygonF &polygon) const
{
QPolygonF screenPolygon(polygon.size());
for (int i = polygon.size() - 1; i >= 0; --i)
screenPolygon[i] = tileToPixelCoords(polygon[i]);
return screenPolygon;
}
static QPolygonF lineToPolygon(const QPointF &start, const QPointF &end);
protected:
/**
* Returns the map this renderer is associated with.
*/
const Map *map() const { return mMap; }
private:
const Map *mMap;
};
} // namespace Tiled
#endif // MAPRENDERER_H
|
