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
153
154
155
156
157
158
159
|
/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_UI_RECT
#define ANDROID_UI_RECT
#include <utils/TypeHelpers.h>
#include <ui/Point.h>
namespace android {
class Rect
{
public:
int left;
int top;
int right;
int bottom;
typedef int value_type;
// we don't provide copy-ctor and operator= on purpose
// because we want the compiler generated versions
inline Rect()
{
}
inline Rect(int w, int h)
: left(0), top(0), right(w), bottom(h)
{
}
inline Rect(int l, int t, int r, int b)
: left(l), top(t), right(r), bottom(b)
{
}
inline Rect(const Point& lt, const Point& rb)
: left(lt.x), top(lt.y), right(rb.x), bottom(rb.y)
{
}
void makeInvalid();
inline void clear() {
left = top = right = bottom = 0;
}
// a valid rectangle has a non negative width and height
inline bool isValid() const {
return (width()>=0) && (height()>=0);
}
// an empty rect has a zero width or height, or is invalid
inline bool isEmpty() const {
return (width()<=0) || (height()<=0);
}
inline void set(const Rect& rhs) {
operator = (rhs);
}
// rectangle's width
inline int width() const {
return right-left;
}
// rectangle's height
inline int height() const {
return bottom-top;
}
// the following 4 functions return the 4 corners of the rect as Point
inline Point leftTop() const {
return Point(left, top);
}
inline Point rightBottom() const {
return Point(right, bottom);
}
inline Point rightTop() const {
return Point(right, top);
}
inline Point leftBottom() const {
return Point(left, bottom);
}
inline void setLeftTop(const Point& p) {
left = p.x;
top = p.y;
}
inline void setRightBottom(const Point& p) {
right = p.x;
bottom = p.y;
}
// comparisons
inline bool operator == (const Rect& rhs) const {
return (left == rhs.left) && (top == rhs.top) &&
(right == rhs.right) && (bottom == rhs.bottom);
}
inline bool operator != (const Rect& rhs) const {
return !operator == (rhs);
}
// operator < defines an order which allows to use rectangles in sorted
// vectors.
bool operator < (const Rect& rhs) const;
Rect& offsetToOrigin() {
right -= left;
bottom -= top;
left = top = 0;
return *this;
}
Rect& offsetTo(const Point& p) {
return offsetTo(p.x, p.y);
}
Rect& offsetBy(const Point& dp) {
return offsetBy(dp.x, dp.y);
}
Rect& operator += (const Point& rhs) {
return offsetBy(rhs.x, rhs.y);
}
Rect& operator -= (const Point& rhs) {
return offsetBy(-rhs.x, -rhs.y);
}
Rect operator + (const Point& rhs) const;
Rect operator - (const Point& rhs) const;
void translate(int dx, int dy) { // legacy, don't use.
offsetBy(dx, dy);
}
Rect& offsetTo(int x, int y);
Rect& offsetBy(int x, int y);
bool intersect(const Rect& with, Rect* result) const;
};
ANDROID_BASIC_TYPES_TRAITS(Rect)
}; // namespace android
#endif // ANDROID_UI_RECT
|
