| Manoj Kumar AVM | b86bc17 | 2015-01-28 21:20:04 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are |
| 6 | * met: |
| 7 | * * Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * * Redistributions in binary form must reproduce the above |
| 10 | * copyright notice, this list of conditions and the following |
| 11 | * disclaimer in the documentation and/or other materials provided |
| 12 | * with the distribution. |
| 13 | * * Neither the name of The Linux Foundation nor the names of its |
| 14 | * contributors may be used to endorse or promote products derived |
| 15 | * from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 21 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 22 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 23 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 24 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 26 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 27 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include <utils/rect.h> |
| 31 | |
| 32 | namespace sde { |
| 33 | |
| 34 | bool IsValidRect(const LayerRect &rect) { |
| 35 | return ((rect.bottom > rect.top) && (rect.right > rect.left)); |
| 36 | } |
| 37 | |
| 38 | |
| 39 | LayerRect GetIntersection(const LayerRect &rect1, const LayerRect &rect2) { |
| 40 | LayerRect res; |
| 41 | |
| 42 | if (!IsValidRect(rect1) || !IsValidRect(rect2)) { |
| 43 | return LayerRect(); |
| 44 | } |
| 45 | |
| 46 | res.left = MAX(rect1.left, rect2.left); |
| 47 | res.top = MAX(rect1.top, rect2.top); |
| 48 | res.right = MIN(rect1.right, rect2.right); |
| 49 | res.bottom = MIN(rect1.bottom, rect2.bottom); |
| 50 | |
| 51 | if (!IsValidRect(res)) { |
| 52 | return LayerRect(); |
| 53 | } |
| 54 | |
| 55 | return res; |
| 56 | } |
| 57 | |
| 58 | } // namespace sde |
| 59 | |