1 /*
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "modules/desktop_capture/desktop_geometry.h"
12
13 #include <algorithm>
14 #include <cmath>
15
16 namespace webrtc {
17
Contains(const DesktopVector & point) const18 bool DesktopRect::Contains(const DesktopVector& point) const {
19 return point.x() >= left() && point.x() < right() && point.y() >= top() &&
20 point.y() < bottom();
21 }
22
ContainsRect(const DesktopRect & rect) const23 bool DesktopRect::ContainsRect(const DesktopRect& rect) const {
24 return rect.left() >= left() && rect.right() <= right() &&
25 rect.top() >= top() && rect.bottom() <= bottom();
26 }
27
IntersectWith(const DesktopRect & rect)28 void DesktopRect::IntersectWith(const DesktopRect& rect) {
29 left_ = std::max(left(), rect.left());
30 top_ = std::max(top(), rect.top());
31 right_ = std::min(right(), rect.right());
32 bottom_ = std::min(bottom(), rect.bottom());
33 if (is_empty()) {
34 left_ = 0;
35 top_ = 0;
36 right_ = 0;
37 bottom_ = 0;
38 }
39 }
40
UnionWith(const DesktopRect & rect)41 void DesktopRect::UnionWith(const DesktopRect& rect) {
42 if (is_empty()) {
43 *this = rect;
44 return;
45 }
46
47 if (rect.is_empty()) {
48 return;
49 }
50
51 left_ = std::min(left(), rect.left());
52 top_ = std::min(top(), rect.top());
53 right_ = std::max(right(), rect.right());
54 bottom_ = std::max(bottom(), rect.bottom());
55 }
56
Translate(int32_t dx,int32_t dy)57 void DesktopRect::Translate(int32_t dx, int32_t dy) {
58 left_ += dx;
59 top_ += dy;
60 right_ += dx;
61 bottom_ += dy;
62 }
63
Extend(int32_t left_offset,int32_t top_offset,int32_t right_offset,int32_t bottom_offset)64 void DesktopRect::Extend(int32_t left_offset,
65 int32_t top_offset,
66 int32_t right_offset,
67 int32_t bottom_offset) {
68 left_ -= left_offset;
69 top_ -= top_offset;
70 right_ += right_offset;
71 bottom_ += bottom_offset;
72 }
73
Scale(double horizontal,double vertical)74 void DesktopRect::Scale(double horizontal, double vertical) {
75 right_ += static_cast<int>(std::round(width() * (horizontal - 1)));
76 bottom_ += static_cast<int>(std::round(height() * (vertical - 1)));
77 }
78
79 } // namespace webrtc
80