Rect.h revision 83b186a246e8ffd52b91a17c0019dd8c9c9d21b1
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 Agopian static inline float min(float a, float b) { return (a<b) ? a : b; } 3383b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian static inline float max(float a, float b) { return (a>b) ? a : b; } 3483b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian Rect intersectWith(float l, float t, float r, float b) const { 3583b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian Rect tmp; 3683b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian tmp.left = max(left, l); 3783b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian tmp.top = max(top, t); 3883b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian tmp.right = min(right, r); 3983b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian tmp.bottom = min(bottom, b); 4083b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian return tmp; 4183b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian } 4283b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian 4383b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopianpublic: 447ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float left; 457ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float top; 467ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float right; 477ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy float bottom; 487ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 495b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy // Used by Region 505b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy typedef float value_type; 515b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 5283b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // we don't provide copy-ctor and operator= on purpose 5383b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // because we want the compiler generated versions 5483b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian 555b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline Rect(): 567ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy left(0), 577ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy top(0), 587ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy right(0), 597ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bottom(0) { 607ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 617ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 625b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline Rect(float left, float top, float right, float bottom): 637ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy left(left), 647ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy top(top), 657ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy right(right), 667ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bottom(bottom) { 677ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 687ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 695b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline Rect(float width, float height): 705b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left(0.0f), 715b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy top(0.0f), 725b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy right(width), 735b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy bottom(height) { 745b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy } 755b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 767ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy friend int operator==(const Rect& a, const Rect& b) { 777ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return !memcmp(&a, &b, sizeof(a)); 787ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 797ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 807ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy friend int operator!=(const Rect& a, const Rect& b) { 817ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return memcmp(&a, &b, sizeof(a)); 827ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 837ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 845b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void clear() { 855b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left = top = right = bottom = 0.0f; 865b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy } 875b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 885b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline bool isEmpty() const { 8983b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // this is written in such way this it'll handle NANs to return 9083b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian // true (empty) 9183b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian return !((left < right) && (top < bottom)); 927ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 937ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 945b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void setEmpty() { 955b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left = top = right = bottom = 0.0f; 967ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 977ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 985b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void set(float left, float top, float right, float bottom) { 997ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->left = left; 1007ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->right = right; 1017ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->top = top; 1027ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy this->bottom = bottom; 1037ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1047ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1055b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy inline void set(const Rect& r) { 1067ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy set(r.left, r.top, r.right, r.bottom); 1077ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1087ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1098aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy inline float getWidth() const { 1107ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return right - left; 1117ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1127ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1138aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy inline float getHeight() const { 1147ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return bottom - top; 1157ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1167ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 11783b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian bool intersects(float l, float t, float r, float b) const { 11883b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian return !intersectWith(l,t,r,b).isEmpty(); 1197ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1207ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1217ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool intersects(const Rect& r) const { 1227ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return intersects(r.left, r.top, r.right, r.bottom); 1237ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 12583b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian bool intersect(float l, float t, float r, float b) { 12683b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian Rect tmp(intersectWith(l,t,r,b)); 12783b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian if (!tmp.isEmpty()) { 12883b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian set(tmp); 1297ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return true; 1307ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1317ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return false; 1327ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1337ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 1347ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool intersect(const Rect& r) { 1357ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return intersect(r.left, r.top, r.right, r.bottom); 1367ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 1377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy 138079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool unionWith(const Rect& r) { 139079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (r.left < r.right && r.top < r.bottom) { 140079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (left < right && top < bottom) { 141079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (left > r.left) left = r.left; 142079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (top > r.top) top = r.top; 143079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (right < r.right) right = r.right; 144079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy if (bottom < r.bottom) bottom = r.bottom; 145079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return true; 146079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } else { 147079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy left = r.left; 148079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy top = r.top; 149079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy right = r.right; 150079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bottom = r.bottom; 151079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return true; 152079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } 153079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } 154079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return false; 155079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy } 156079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy 1575b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy void translate(float dx, float dy) { 1585b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy left += dx; 1595b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy right += dx; 1605b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy top += dy; 1615b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy bottom += dy; 1625b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy } 1635b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 164bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy void snapToPixelBoundaries() { 165ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy left = floorf(left + 0.5f); 166ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy top = floorf(top + 0.5f); 167ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy right = floorf(right + 0.5f); 168ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy bottom = floorf(bottom + 0.5f); 169bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy } 170bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 1717ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy void dump() const { 1727ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy LOGD("Rect[l=%f t=%f r=%f b=%f]", left, top, right, bottom); 1737ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 174bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 17583b186a246e8ffd52b91a17c0019dd8c9c9d21b1Mathias Agopian}; // class Rect 176bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1779d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 178bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy}; // namespace android 179bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1805b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#endif // ANDROID_HWUI_RECT_H 181