ViewConfiguration.java revision 0211a0a10d20ec99bd78905ea9cd2960f7beb4c8
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.view; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 20ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackbornimport android.content.res.Configuration; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.DisplayMetrics; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.SparseArray; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Contains methods to standard constants used in the UI for timeouts, sizes, and distances. 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ViewConfiguration { 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy * Expected bit depth of the display panel. 30dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy * 31dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy * @hide 32dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy */ 33dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy public static final float PANEL_BIT_DEPTH = 24; 34dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 35dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy /** 36dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy * Minimum alpha required for a view to draw. 37dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy * 38dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy * @hide 39dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy */ 40dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy public static final float ALPHA_THRESHOLD = 0.5f / PANEL_BIT_DEPTH; 41909cbaf8f92d69f507bbdba9e5aa960d1e6c7a1fRomain Guy /** 42909cbaf8f92d69f507bbdba9e5aa960d1e6c7a1fRomain Guy * @hide 43909cbaf8f92d69f507bbdba9e5aa960d1e6c7a1fRomain Guy */ 44909cbaf8f92d69f507bbdba9e5aa960d1e6c7a1fRomain Guy public static final float ALPHA_THRESHOLD_INT = 0x7f / PANEL_BIT_DEPTH; 45909cbaf8f92d69f507bbdba9e5aa960d1e6c7a1fRomain Guy 46dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy /** 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the width of the horizontal scrollbar and the height of the vertical scrollbar in 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixels 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int SCROLL_BAR_SIZE = 10; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 53f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron * Duration of the fade when scrollbars fade away in milliseconds 54f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron */ 55f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron private static final int SCROLL_BAR_FADE_DURATION = 250; 56f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 57f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron /** 58f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron * Default delay before the scrollbars fade in milliseconds 59f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron */ 60f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron private static final int SCROLL_BAR_DEFAULT_DELAY = 300; 61f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 62f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron /** 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the length of the fading edges in pixels 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int FADING_EDGE_LENGTH = 12; 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds of the pressed state in child 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * components. 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 71e14579bac59aa84523c2bfbfc3f28c7842ec664dAdam Powell private static final int PRESSED_STATE_DURATION = 125; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds before a press turns into 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a long press 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int LONG_PRESS_TIMEOUT = 500; 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds a user needs to hold down the 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * appropriate button to bring up the global actions dialog (power off, 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * lock screen, etc). 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int GLOBAL_ACTIONS_KEY_TIMEOUT = 500; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds we will wait to see if a touch event 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is a tap or a scroll. If the user does not move within this interval, it is 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * considered to be a tap. 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 91e14579bac59aa84523c2bfbfc3f28c7842ec664dAdam Powell private static final int TAP_TIMEOUT = 115; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds we will wait to see if a touch event 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is a jump tap. If the user does not complete the jump tap within this interval, it is 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * considered to be a tap. 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int JUMP_TAP_TIMEOUT = 500; 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds between the first tap's up event and 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the second tap's down event for an interaction to be considered a 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * double-tap. 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DOUBLE_TAP_TIMEOUT = 300; 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the duration in milliseconds we want to display zoom controls in response 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to a user panning within an application. 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ZOOM_CONTROLS_TIMEOUT = 3000; 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Inset in pixels to look for touchable content when the user touches the edge of the screen 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int EDGE_SLOP = 12; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Distance a touch can wander before we think the user is scrolling in pixels 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1213e2ac8843489e83c4171aabcfe98769b5159a5c8Dianne Hackborn private static final int TOUCH_SLOP = 16; 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 124de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell * Distance a touch can wander before we think the user is attempting a paged scroll 125de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell * (in dips) 126de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell */ 127b7ef1d9ec9aa09ecba5a348c939b10f798aff131Adam Powell private static final int PAGING_TOUCH_SLOP = TOUCH_SLOP * 2; 128de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell 129de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell /** 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Distance between the first touch and second touch to still be considered a double tap 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DOUBLE_TAP_SLOP = 100; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Distance a touch needs to be outside of a window's bounds for it to 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * count as outside for purposes of dismissing the window. 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int WINDOW_TOUCH_SLOP = 16; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Minimum velocity to initiate a fling, as measured in pixels per second 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int MINIMUM_FLING_VELOCITY = 50; 1444296fc4d326447875c26a925f12b3935632f13bbRomain Guy 1454296fc4d326447875c26a925f12b3935632f13bbRomain Guy /** 1464296fc4d326447875c26a925f12b3935632f13bbRomain Guy * Maximum velocity to initiate a fling, as measured in pixels per second 1474296fc4d326447875c26a925f12b3935632f13bbRomain Guy */ 148637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell private static final int MAXIMUM_FLING_VELOCITY = 8000; 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The maximum size of View's drawing cache, expressed in bytes. This size 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * should be at least equal to the size of the screen in ARGB888 format. 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 1550211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy private static final int MAXIMUM_DRAWING_CACHE_SIZE = 480 * 800 * 4; // ARGB8888 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The coefficient of friction applied to flings/scrolls. 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1600211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy private static final float SCROLL_FRICTION = 0.015f; 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 162637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 163637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * Max distance to overscroll for edge effects 164637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 165637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell private static final int OVERSCROLL_DISTANCE = 0; 166637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 167637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 168637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * Max distance to overfling for edge effects 169637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 1708ce7aab79e711ff5de54985aeffb1a205b7f9942Gilles Debunne private static final int OVERFLING_DISTANCE = 6; 171637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mEdgeSlop; 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mFadingEdgeLength; 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mMinimumFlingVelocity; 1754296fc4d326447875c26a925f12b3935632f13bbRomain Guy private final int mMaximumFlingVelocity; 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mScrollbarSize; 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mTouchSlop; 178de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell private final int mPagingTouchSlop; 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mDoubleTapSlop; 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mWindowTouchSlop; 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mMaximumDrawingCacheSize; 182637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell private final int mOverscrollDistance; 183637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell private final int mOverflingDistance; 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final SparseArray<ViewConfiguration> sConfigurations = 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new SparseArray<ViewConfiguration>(2); 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link android.view.ViewConfiguration#get(android.content.Context)} instead. 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ViewConfiguration() { 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEdgeSlop = EDGE_SLOP; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFadingEdgeLength = FADING_EDGE_LENGTH; 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMinimumFlingVelocity = MINIMUM_FLING_VELOCITY; 1964296fc4d326447875c26a925f12b3935632f13bbRomain Guy mMaximumFlingVelocity = MAXIMUM_FLING_VELOCITY; 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollbarSize = SCROLL_BAR_SIZE; 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchSlop = TOUCH_SLOP; 199de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell mPagingTouchSlop = PAGING_TOUCH_SLOP; 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDoubleTapSlop = DOUBLE_TAP_SLOP; 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWindowTouchSlop = WINDOW_TOUCH_SLOP; 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //noinspection deprecation 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaximumDrawingCacheSize = MAXIMUM_DRAWING_CACHE_SIZE; 204637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell mOverscrollDistance = OVERSCROLL_DISTANCE; 205637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell mOverflingDistance = OVERFLING_DISTANCE; 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new configuration for the specified context. The configuration depends on 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * various parameters of the context, like the dimension of the display or the density 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of the display. 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param context The application context used to initialize this view configuration. 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #get(android.content.Context) 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.util.DisplayMetrics 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ViewConfiguration(Context context) { 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final DisplayMetrics metrics = context.getResources().getDisplayMetrics(); 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float density = metrics.density; 221ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn final float sizeAndDensity; 222ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn if (context.getResources().getConfiguration().isLayoutSizeAtLeast( 223ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn Configuration.SCREENLAYOUT_SIZE_XLARGE)) { 224ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn sizeAndDensity = density * 1.5f; 225ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn } else { 226ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn sizeAndDensity = density; 227ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn } 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 229ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mEdgeSlop = (int) (sizeAndDensity * EDGE_SLOP + 0.5f); 230ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mFadingEdgeLength = (int) (sizeAndDensity * FADING_EDGE_LENGTH + 0.5f); 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMinimumFlingVelocity = (int) (density * MINIMUM_FLING_VELOCITY + 0.5f); 2324296fc4d326447875c26a925f12b3935632f13bbRomain Guy mMaximumFlingVelocity = (int) (density * MAXIMUM_FLING_VELOCITY + 0.5f); 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollbarSize = (int) (density * SCROLL_BAR_SIZE + 0.5f); 234ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mTouchSlop = (int) (sizeAndDensity * TOUCH_SLOP + 0.5f); 235ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mPagingTouchSlop = (int) (sizeAndDensity * PAGING_TOUCH_SLOP + 0.5f); 236ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mDoubleTapSlop = (int) (sizeAndDensity * DOUBLE_TAP_SLOP + 0.5f); 237ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mWindowTouchSlop = (int) (sizeAndDensity * WINDOW_TOUCH_SLOP + 0.5f); 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Size of the screen in bytes, in ARGB_8888 format 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMaximumDrawingCacheSize = 4 * metrics.widthPixels * metrics.heightPixels; 241637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 242ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mOverscrollDistance = (int) (sizeAndDensity * OVERSCROLL_DISTANCE + 0.5f); 243ff801ec71399f7e8aa95bcbb9937c53144fe17c5Dianne Hackborn mOverflingDistance = (int) (sizeAndDensity * OVERFLING_DISTANCE + 0.5f); 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a configuration for the specified context. The configuration depends on 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * various parameters of the context, like the dimension of the display or the 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * density of the display. 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param context The application context used to initialize the view configuration. 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static ViewConfiguration get(Context context) { 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final DisplayMetrics metrics = context.getResources().getDisplayMetrics(); 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int density = (int) (100.0f * metrics.density); 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewConfiguration configuration = sConfigurations.get(density); 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (configuration == null) { 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project configuration = new ViewConfiguration(context); 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sConfigurations.put(density, configuration); 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return configuration; 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The width of the horizontal scrollbar and the height of the vertical 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * scrollbar in pixels 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledScrollBarSize()} instead. 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getScrollBarSize() { 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return SCROLL_BAR_SIZE; 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The width of the horizontal scrollbar and the height of the vertical 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * scrollbar in pixels 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledScrollBarSize() { 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mScrollbarSize; 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 286f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron * @return Duration of the fade when scrollbars fade away in milliseconds 287f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron */ 288f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron public static int getScrollBarFadeDuration() { 289f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron return SCROLL_BAR_FADE_DURATION; 290f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 291f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 292f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron /** 293f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron * @return Default delay before the scrollbars fade in milliseconds 294f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron */ 295f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron public static int getScrollDefaultDelay() { 296f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron return SCROLL_BAR_DEFAULT_DELAY; 297f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 298f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 299f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron /** 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the length of the fading edges in pixels 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledFadingEdgeLength()} instead. 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getFadingEdgeLength() { 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return FADING_EDGE_LENGTH; 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the length of the fading edges in pixels 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledFadingEdgeLength() { 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFadingEdgeLength; 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the duration in milliseconds of the pressed state in child 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * components. 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getPressedStateDuration() { 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return PRESSED_STATE_DURATION; 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the duration in milliseconds before a press turns into 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a long press 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getLongPressTimeout() { 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return LONG_PRESS_TIMEOUT; 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the duration in milliseconds we will wait to see if a touch event 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is a tap or a scroll. If the user does not move within this interval, it is 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * considered to be a tap. 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getTapTimeout() { 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return TAP_TIMEOUT; 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the duration in milliseconds we will wait to see if a touch event 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is a jump tap. If the user does not move within this interval, it is 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * considered to be a tap. 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getJumpTapTimeout() { 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return JUMP_TAP_TIMEOUT; 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the duration in milliseconds between the first tap's up event and 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the second tap's down event for an interaction to be considered a 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * double-tap. 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getDoubleTapTimeout() { 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return DOUBLE_TAP_TIMEOUT; 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Inset in pixels to look for touchable content when the user touches the edge of the 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * screen 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledEdgeSlop()} instead. 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getEdgeSlop() { 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return EDGE_SLOP; 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Inset in pixels to look for touchable content when the user touches the edge of the 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * screen 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledEdgeSlop() { 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEdgeSlop; 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Distance a touch can wander before we think the user is scrolling in pixels 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledTouchSlop()} instead. 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getTouchSlop() { 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return TOUCH_SLOP; 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Distance a touch can wander before we think the user is scrolling in pixels 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledTouchSlop() { 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTouchSlop; 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 394de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell 395de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell /** 396de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell * @return Distance a touch can wander before we think the user is scrolling a full page 397de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell * in dips 398de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell */ 399de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell public int getScaledPagingTouchSlop() { 400de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell return mPagingTouchSlop; 401de8d0834fc2bc31f011fb3316757883e1b731440Adam Powell } 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Distance between the first touch and second touch to still be 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * considered a double tap 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledDoubleTapSlop()} instead. 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide The only client of this should be GestureDetector, which needs this 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for clients that still use its deprecated constructor. 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getDoubleTapSlop() { 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return DOUBLE_TAP_SLOP; 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Distance between the first touch and second touch to still be 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * considered a double tap 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledDoubleTapSlop() { 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mDoubleTapSlop; 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Distance a touch must be outside the bounds of a window for it 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be counted as outside the window for purposes of dismissing that 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * window. 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledWindowTouchSlop()} instead. 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getWindowTouchSlop() { 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return WINDOW_TOUCH_SLOP; 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Distance a touch must be outside the bounds of a window for it 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to be counted as outside the window for purposes of dismissing that 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * window. 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledWindowTouchSlop() { 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWindowTouchSlop; 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Minimum velocity to initiate a fling, as measured in pixels per second. 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledMinimumFlingVelocity()} instead. 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getMinimumFlingVelocity() { 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return MINIMUM_FLING_VELOCITY; 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Minimum velocity to initiate a fling, as measured in pixels per second. 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledMinimumFlingVelocity() { 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mMinimumFlingVelocity; 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4624296fc4d326447875c26a925f12b3935632f13bbRomain Guy * @return Maximum velocity to initiate a fling, as measured in pixels per second. 4634296fc4d326447875c26a925f12b3935632f13bbRomain Guy * 4644296fc4d326447875c26a925f12b3935632f13bbRomain Guy * @deprecated Use {@link #getScaledMaximumFlingVelocity()} instead. 4654296fc4d326447875c26a925f12b3935632f13bbRomain Guy */ 4664296fc4d326447875c26a925f12b3935632f13bbRomain Guy @Deprecated 4674296fc4d326447875c26a925f12b3935632f13bbRomain Guy public static int getMaximumFlingVelocity() { 4684296fc4d326447875c26a925f12b3935632f13bbRomain Guy return MAXIMUM_FLING_VELOCITY; 4694296fc4d326447875c26a925f12b3935632f13bbRomain Guy } 4704296fc4d326447875c26a925f12b3935632f13bbRomain Guy 4714296fc4d326447875c26a925f12b3935632f13bbRomain Guy /** 4724296fc4d326447875c26a925f12b3935632f13bbRomain Guy * @return Maximum velocity to initiate a fling, as measured in pixels per second. 4734296fc4d326447875c26a925f12b3935632f13bbRomain Guy */ 4744296fc4d326447875c26a925f12b3935632f13bbRomain Guy public int getScaledMaximumFlingVelocity() { 4754296fc4d326447875c26a925f12b3935632f13bbRomain Guy return mMaximumFlingVelocity; 4764296fc4d326447875c26a925f12b3935632f13bbRomain Guy } 4774296fc4d326447875c26a925f12b3935632f13bbRomain Guy 4784296fc4d326447875c26a925f12b3935632f13bbRomain Guy /** 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The maximum drawing cache size expressed in bytes. 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the maximum size of View's drawing cache expressed in bytes 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Use {@link #getScaledMaximumDrawingCacheSize()} instead. 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Deprecated 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int getMaximumDrawingCacheSize() { 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //noinspection deprecation 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return MAXIMUM_DRAWING_CACHE_SIZE; 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The maximum drawing cache size expressed in bytes. 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the maximum size of View's drawing cache expressed in bytes 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getScaledMaximumDrawingCacheSize() { 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mMaximumDrawingCacheSize; 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 501637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * @return The maximum distance a View should overscroll by when showing edge effects. 502637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 503637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell public int getScaledOverscrollDistance() { 504637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell return mOverscrollDistance; 505637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 506637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 507637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 508637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * @return The maximum distance a View should overfling by when showing edge effects. 509637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 510637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell public int getScaledOverflingDistance() { 511637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell return mOverflingDistance; 512637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 513637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 514637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The amount of time that the zoom controls should be 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * displayed on the screen expressed in milliseconds. 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the time the zoom controls should be visible expressed 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in milliseconds. 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static long getZoomControlsTimeout() { 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return ZOOM_CONTROLS_TIMEOUT; 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The amount of time a user needs to press the relevant key to bring up 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the global actions dialog. 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return how long a user needs to press the relevant key to bring up 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the global actions dialog. 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static long getGlobalActionKeyTimeout() { 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return GLOBAL_ACTIONS_KEY_TIMEOUT; 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The amount of friction applied to scrolls and flings. 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A scalar dimensionless value representing the coefficient of 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * friction. 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static float getScrollFriction() { 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return SCROLL_FRICTION; 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 546