Rect.h revision a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5
1bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy/* 2bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * Copyright (C) 2010 The Android Open Source Project 3bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * 4bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * you may not use this file except in compliance with the License. 6bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * You may obtain a copy of the License at 7bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * 8bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * 10bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * Unless required by applicable law or agreed to in writing, software 11bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * See the License for the specific language governing permissions and 14bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy * limitations under the License. 15bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy */ 16bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 175b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#ifndef ANDROID_HWUI_RECT_H 185b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#define ANDROID_HWUI_RECT_H 195b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 205b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#include <cmath> 21bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 225cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 235cbbce535744b89df5ecea95de21ee3733298260Romain Guy 24bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guynamespace android { 259d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 26bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 27bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy/////////////////////////////////////////////////////////////////////////////// 28bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy// Structs 29bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy/////////////////////////////////////////////////////////////////////////////// 30bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 3183b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopianclass Rect { 3283b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopianpublic: 337ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float left; 347ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float top; 357ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float right; 367ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float bottom; 377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 385b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy // Used by Region 395b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy typedef float value_type; 405b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 4183b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // we don't provide copy-ctor and operator= on purpose 4283b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // because we want the compiler generated versions 4383b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian 445b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline Rect(): 457ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy left(0), 467ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy top(0), 477ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy right(0), 487ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bottom(0) { 497ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 507ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 515b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline Rect(float left, float top, float right, float bottom): 527ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy left(left), 537ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy top(top), 547ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy right(right), 557ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bottom(bottom) { 567ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 577ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 585b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline Rect(float width, float height): 595b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left(0.0f), 605b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy top(0.0f), 615b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy right(width), 625b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy bottom(height) { 635b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy } 645b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 657ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy friend int operator==(const Rect& a, const Rect& b) { 667ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return !memcmp(&a, &b, sizeof(a)); 677ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 687ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 697ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy friend int operator!=(const Rect& a, const Rect& b) { 707ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return memcmp(&a, &b, sizeof(a)); 717ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 727ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 735b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void clear() { 745b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left = top = right = bottom = 0.0f; 755b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy } 765b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 775b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline bool isEmpty() const { 7883b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // this is written in such way this it'll handle NANs to return 7983b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // true (empty) 8083b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian return !((left < right) && (top < bottom)); 817ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 827ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 835b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void setEmpty() { 845b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left = top = right = bottom = 0.0f; 857ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 867ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 875b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void set(float left, float top, float right, float bottom) { 887ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->left = left; 897ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->right = right; 907ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->top = top; 917ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->bottom = bottom; 927ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 937ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 945b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void set(const Rect& r) { 957ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy set(r.left, r.top, r.right, r.bottom); 967ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 977ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 988aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy inline float getWidth() const { 997ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return right - left; 1007ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1017ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1028aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy inline float getHeight() const { 1037ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return bottom - top; 1047ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1057ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 10683b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian bool intersects(float l, float t, float r, float b) const { 107a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy return !intersectWith(l, t, r, b).isEmpty(); 1087ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1097ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1107ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool intersects(const Rect& r) const { 1117ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return intersects(r.left, r.top, r.right, r.bottom); 1127ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1137ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 11483b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian bool intersect(float l, float t, float r, float b) { 115a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy Rect tmp(intersectWith(l, t, r, b)); 11683b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian if (!tmp.isEmpty()) { 11783b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian set(tmp); 1187ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return true; 1197ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1207ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return false; 1217ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1227ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1237ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool intersect(const Rect& r) { 1247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return intersect(r.left, r.top, r.right, r.bottom); 1257ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1267ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 127079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool unionWith(const Rect& r) { 128079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (r.left < r.right && r.top < r.bottom) { 129079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (left < right && top < bottom) { 130079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (left > r.left) left = r.left; 131079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (top > r.top) top = r.top; 132079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (right < r.right) right = r.right; 133079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (bottom < r.bottom) bottom = r.bottom; 134079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return true; 135079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } else { 136079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy left = r.left; 137079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy top = r.top; 138079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy right = r.right; 139079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bottom = r.bottom; 140079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return true; 141079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } 142079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } 143079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return false; 144079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } 145079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy 1465b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy void translate(float dx, float dy) { 1475b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left += dx; 1485b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy right += dx; 1495b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy top += dy; 1505b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy bottom += dy; 1515b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy } 1525b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 153bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy void snapToPixelBoundaries() { 154ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy left = floorf(left + 0.5f); 155ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy top = floorf(top + 0.5f); 156ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy right = floorf(right + 0.5f); 157ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy bottom = floorf(bottom + 0.5f); 158bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy } 159bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 1607ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy void dump() const { 1617ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy LOGD("Rect[l=%f t=%f r=%f b=%f]", left, top, right, bottom); 1627ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 163bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 164a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guyprivate: 165a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy static inline float min(float a, float b) { return (a < b) ? a : b; } 166a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy static inline float max(float a, float b) { return (a > b) ? a : b; } 167a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy 168a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy Rect intersectWith(float l, float t, float r, float b) const { 169a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy Rect tmp; 170a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy tmp.left = max(left, l); 171a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy tmp.top = max(top, t); 172a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy tmp.right = min(right, r); 173a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy tmp.bottom = min(bottom, b); 174a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy return tmp; 175a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy } 176a1d3c91afbd52c7e8b01f4a9060c5459f02ae7a5Romain Guy 17783b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian}; // class Rect 178bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1799d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 180bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy}; // namespace android 181bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1825b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#endif // ANDROID_HWUI_RECT_H 183