1 /*
2 * Copyright (C) 2009 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 #include <system/graphics.h>
18 #include <ui/Rect.h>
19
20 namespace android {
21
min(int32_t a,int32_t b)22 static inline int32_t min(int32_t a, int32_t b) {
23 return (a<b) ? a : b;
24 }
25
max(int32_t a,int32_t b)26 static inline int32_t max(int32_t a, int32_t b) {
27 return (a>b) ? a : b;
28 }
29
makeInvalid()30 void Rect::makeInvalid() {
31 left = 0;
32 top = 0;
33 right = -1;
34 bottom = -1;
35 }
36
operator <(const Rect & rhs) const37 bool Rect::operator < (const Rect& rhs) const
38 {
39 if (top<rhs.top) {
40 return true;
41 } else if (top == rhs.top) {
42 if (left < rhs.left) {
43 return true;
44 } else if (left == rhs.left) {
45 if (bottom<rhs.bottom) {
46 return true;
47 } else if (bottom == rhs.bottom) {
48 if (right<rhs.right) {
49 return true;
50 }
51 }
52 }
53 }
54 return false;
55 }
56
offsetTo(int32_t x,int32_t y)57 Rect& Rect::offsetTo(int32_t x, int32_t y)
58 {
59 right -= left - x;
60 bottom -= top - y;
61 left = x;
62 top = y;
63 return *this;
64 }
65
offsetBy(int32_t x,int32_t y)66 Rect& Rect::offsetBy(int32_t x, int32_t y)
67 {
68 left += x;
69 top += y;
70 right+= x;
71 bottom+=y;
72 return *this;
73 }
74
operator +(const Point & rhs) const75 const Rect Rect::operator + (const Point& rhs) const
76 {
77 const Rect result(left+rhs.x, top+rhs.y, right+rhs.x, bottom+rhs.y);
78 return result;
79 }
80
operator -(const Point & rhs) const81 const Rect Rect::operator - (const Point& rhs) const
82 {
83 const Rect result(left-rhs.x, top-rhs.y, right-rhs.x, bottom-rhs.y);
84 return result;
85 }
86
intersect(const Rect & with,Rect * result) const87 bool Rect::intersect(const Rect& with, Rect* result) const
88 {
89 result->left = max(left, with.left);
90 result->top = max(top, with.top);
91 result->right = min(right, with.right);
92 result->bottom = min(bottom, with.bottom);
93 return !(result->isEmpty());
94 }
95
transform(uint32_t xform,int32_t width,int32_t height) const96 Rect Rect::transform(uint32_t xform, int32_t width, int32_t height) const {
97 Rect result(*this);
98 if (xform & HAL_TRANSFORM_FLIP_H) {
99 result = Rect(width - result.right, result.top,
100 width - result.left, result.bottom);
101 }
102 if (xform & HAL_TRANSFORM_FLIP_V) {
103 result = Rect(result.left, height - result.bottom,
104 result.right, height - result.top);
105 }
106 if (xform & HAL_TRANSFORM_ROT_90) {
107 int left = height - result.bottom;
108 int top = result.left;
109 int right = height - result.top;
110 int bottom = result.right;
111 result = Rect(left, top, right, bottom);
112 }
113 return result;
114 }
115
116 }; // namespace android
117