media/omx-plugin/include/ics/ui/Rect.h

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TOR_BUG_9701
changeset 15
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-1:000000000000 0:09b0c716f3d2
1 /*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef ANDROID_UI_RECT
18 #define ANDROID_UI_RECT
19
20 #include <utils/TypeHelpers.h>
21 #include <ui/Point.h>
22
23 #include <android/rect.h>
24
25 namespace android {
26
27 class Rect : public ARect
28 {
29 public:
30 typedef ARect::value_type value_type;
31
32 // we don't provide copy-ctor and operator= on purpose
33 // because we want the compiler generated versions
34
35 inline Rect() {
36 }
37 inline Rect(int32_t w, int32_t h) {
38 left = top = 0; right = w; bottom = h;
39 }
40 inline Rect(int32_t l, int32_t t, int32_t r, int32_t b) {
41 left = l; top = t; right = r; bottom = b;
42 }
43 inline Rect(const Point& lt, const Point& rb) {
44 left = lt.x; top = lt.y; right = rb.x; bottom = rb.y;
45 }
46
47 void makeInvalid();
48
49 inline void clear() {
50 left = top = right = bottom = 0;
51 }
52
53 // a valid rectangle has a non negative width and height
54 inline bool isValid() const {
55 return (width()>=0) && (height()>=0);
56 }
57
58 // an empty rect has a zero width or height, or is invalid
59 inline bool isEmpty() const {
60 return (width()<=0) || (height()<=0);
61 }
62
63 inline void set(const Rect& rhs) {
64 operator = (rhs);
65 }
66
67 // rectangle's width
68 inline int32_t width() const {
69 return right-left;
70 }
71
72 // rectangle's height
73 inline int32_t height() const {
74 return bottom-top;
75 }
76
77 void setLeftTop(const Point& lt) {
78 left = lt.x;
79 top = lt.y;
80 }
81
82 void setRightBottom(const Point& rb) {
83 right = rb.x;
84 bottom = rb.y;
85 }
86
87 // the following 4 functions return the 4 corners of the rect as Point
88 Point leftTop() const {
89 return Point(left, top);
90 }
91 Point rightBottom() const {
92 return Point(right, bottom);
93 }
94 Point rightTop() const {
95 return Point(right, top);
96 }
97 Point leftBottom() const {
98 return Point(left, bottom);
99 }
100
101 // comparisons
102 inline bool operator == (const Rect& rhs) const {
103 return (left == rhs.left) && (top == rhs.top) &&
104 (right == rhs.right) && (bottom == rhs.bottom);
105 }
106
107 inline bool operator != (const Rect& rhs) const {
108 return !operator == (rhs);
109 }
110
111 // operator < defines an order which allows to use rectangles in sorted
112 // vectors.
113 bool operator < (const Rect& rhs) const;
114
115 Rect& offsetToOrigin() {
116 right -= left;
117 bottom -= top;
118 left = top = 0;
119 return *this;
120 }
121 Rect& offsetTo(const Point& p) {
122 return offsetTo(p.x, p.y);
123 }
124 Rect& offsetBy(const Point& dp) {
125 return offsetBy(dp.x, dp.y);
126 }
127 Rect& operator += (const Point& rhs) {
128 return offsetBy(rhs.x, rhs.y);
129 }
130 Rect& operator -= (const Point& rhs) {
131 return offsetBy(-rhs.x, -rhs.y);
132 }
133 const Rect operator + (const Point& rhs) const;
134 const Rect operator - (const Point& rhs) const;
135
136 void translate(int32_t dx, int32_t dy) { // legacy, don't use.
137 offsetBy(dx, dy);
138 }
139
140 Rect& offsetTo(int32_t x, int32_t y);
141 Rect& offsetBy(int32_t x, int32_t y);
142 bool intersect(const Rect& with, Rect* result) const;
143 };
144
145 ANDROID_BASIC_TYPES_TRAITS(Rect)
146
147 }; // namespace android
148
149 #endif // ANDROID_UI_RECT

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