Adam Cohen | 2e6da15 | 2015-05-06 11:42:25 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.launcher3; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.graphics.Point; |
| 21 | import android.graphics.PointF; |
| 22 | import android.util.DisplayMetrics; |
| 23 | import android.util.TypedValue; |
| 24 | import android.view.Display; |
| 25 | import android.view.WindowManager; |
| 26 | |
| 27 | import com.android.launcher3.util.Thunk; |
| 28 | |
| 29 | import java.util.ArrayList; |
| 30 | import java.util.Collections; |
| 31 | import java.util.Comparator; |
| 32 | |
| 33 | public class InvariantDeviceProfile { |
| 34 | private static final String TAG = "InvariantDeviceProfile"; |
| 35 | |
| 36 | // This is a static that we use for the default icon size on a 4/5-inch phone |
| 37 | static float DEFAULT_ICON_SIZE_DP = 60; |
| 38 | |
| 39 | |
| 40 | static ArrayList<InvariantDeviceProfile> sDeviceProfiles = |
| 41 | new ArrayList<InvariantDeviceProfile>(); |
| 42 | static { |
| 43 | sDeviceProfiles.add(new InvariantDeviceProfile("Super Short Stubby", |
| 44 | 255, 300, 2, 3, 2, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4)); |
| 45 | sDeviceProfiles.add(new InvariantDeviceProfile("Shorter Stubby", |
| 46 | 255, 400, 3, 3, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4)); |
| 47 | sDeviceProfiles.add(new InvariantDeviceProfile("Short Stubby", |
| 48 | 275, 420, 3, 4, 3, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); |
| 49 | sDeviceProfiles.add(new InvariantDeviceProfile("Stubby", |
| 50 | 255, 450, 3, 4, 3, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); |
| 51 | sDeviceProfiles.add(new InvariantDeviceProfile("Nexus S", |
| 52 | 296, 491.33f, 4, 4, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); |
| 53 | sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 4", |
| 54 | 335, 567, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4)); |
| 55 | sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 5", |
| 56 | 359, 567, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4)); |
| 57 | sDeviceProfiles.add(new InvariantDeviceProfile("Large Phone", |
| 58 | 406, 694, 5, 5, 4, 4, 64, 14.4f, 5, 56, R.xml.default_workspace_5x5)); |
| 59 | // The tablet profile is odd in that the landscape orientation |
| 60 | // also includes the nav bar on the side |
| 61 | sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 7", |
| 62 | 575, 904, 5, 6, 4, 5, 72, 14.4f, 7, 60, R.xml.default_workspace_5x6)); |
| 63 | // Larger tablet profiles always have system bars on the top & bottom |
| 64 | sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 10", |
| 65 | 727, 1207, 5, 6, 4, 5, 76, 14.4f, 7, 64, R.xml.default_workspace_5x6)); |
| 66 | sDeviceProfiles.add(new InvariantDeviceProfile("20-inch Tablet", |
| 67 | 1527, 2527, 7, 7, 6, 6, 100, 20, 7, 72, R.xml.default_workspace_4x4)); |
| 68 | } |
| 69 | |
| 70 | class DeviceProfileQuery { |
| 71 | InvariantDeviceProfile profile; |
| 72 | float widthDps; |
| 73 | float heightDps; |
| 74 | float value; |
| 75 | PointF dimens; |
| 76 | |
| 77 | DeviceProfileQuery(InvariantDeviceProfile p, float v) { |
| 78 | widthDps = p.minWidthDps; |
| 79 | heightDps = p.minHeightDps; |
| 80 | value = v; |
| 81 | dimens = new PointF(widthDps, heightDps); |
| 82 | profile = p; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | // Profile-defining invariant properties |
| 87 | String name; |
| 88 | float minWidthDps; |
| 89 | float minHeightDps; |
| 90 | public int numRows; |
| 91 | public int numColumns; |
| 92 | public int numFolderRows; |
| 93 | public int numFolderColumns; |
| 94 | float iconSize; |
| 95 | float iconTextSize; |
| 96 | float numHotseatIcons; |
| 97 | float hotseatIconSize; |
| 98 | int defaultLayoutId; |
| 99 | |
| 100 | // Derived invariant properties |
| 101 | int hotseatAllAppsRank; |
| 102 | |
| 103 | InvariantDeviceProfile() { |
| 104 | } |
| 105 | |
| 106 | InvariantDeviceProfile(String n, float w, float h, int r, int c, int fr, int fc, |
| 107 | float is, float its, float hs, float his, int dlId) { |
| 108 | // Ensure that we have an odd number of hotseat items (since we need to place all apps) |
| 109 | if (hs % 2 == 0) { |
| 110 | throw new RuntimeException("All Device Profiles must have an odd number of hotseat spaces"); |
| 111 | } |
| 112 | |
| 113 | name = n; |
| 114 | minWidthDps = w; |
| 115 | minHeightDps = h; |
| 116 | numRows = r; |
| 117 | numColumns = c; |
| 118 | numFolderRows = fr; |
| 119 | numFolderColumns = fc; |
| 120 | iconSize = is; |
| 121 | iconTextSize = its; |
| 122 | numHotseatIcons = hs; |
| 123 | hotseatIconSize = his; |
| 124 | defaultLayoutId = dlId; |
| 125 | } |
| 126 | |
| 127 | InvariantDeviceProfile(Context context) { |
| 128 | WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); |
| 129 | Display display = wm.getDefaultDisplay(); |
| 130 | DisplayMetrics dm = new DisplayMetrics(); |
| 131 | display.getMetrics(dm); |
| 132 | |
| 133 | Point smallestSize = new Point(); |
| 134 | Point largestSize = new Point(); |
| 135 | display.getCurrentSizeRange(smallestSize, largestSize); |
| 136 | |
| 137 | minWidthDps = Utilities.dpiFromPx(Math.min(smallestSize.x, smallestSize.y), dm); |
| 138 | minHeightDps = Utilities.dpiFromPx(Math.min(largestSize.x, largestSize.y), dm); |
| 139 | |
| 140 | ArrayList<DeviceProfileQuery> points = |
| 141 | new ArrayList<DeviceProfileQuery>(); |
| 142 | |
| 143 | // Find the closes profile given the width/height |
| 144 | for (InvariantDeviceProfile p : sDeviceProfiles) { |
| 145 | points.add(new DeviceProfileQuery(p, 0f)); |
| 146 | } |
| 147 | |
| 148 | InvariantDeviceProfile closestProfile = |
| 149 | findClosestDeviceProfile(minWidthDps, minHeightDps, points); |
| 150 | |
| 151 | // The following properties are inherited directly from the nearest archetypal profile |
| 152 | numRows = closestProfile.numRows; |
| 153 | numColumns = closestProfile.numColumns; |
| 154 | numHotseatIcons = closestProfile.numHotseatIcons; |
| 155 | hotseatAllAppsRank = (int) (numHotseatIcons / 2); |
| 156 | defaultLayoutId = closestProfile.defaultLayoutId; |
| 157 | numFolderRows = closestProfile.numFolderRows; |
| 158 | numFolderColumns = closestProfile.numFolderColumns; |
| 159 | |
| 160 | |
| 161 | // The following properties are interpolated based on proximity to nearby archetypal |
| 162 | // profiles |
| 163 | points.clear(); |
| 164 | for (InvariantDeviceProfile p : sDeviceProfiles) { |
| 165 | points.add(new DeviceProfileQuery(p, p.iconSize)); |
| 166 | } |
| 167 | iconSize = invDistWeightedInterpolate(minWidthDps, minHeightDps, points); |
| 168 | points.clear(); |
| 169 | for (InvariantDeviceProfile p : sDeviceProfiles) { |
| 170 | points.add(new DeviceProfileQuery(p, p.iconTextSize)); |
| 171 | } |
| 172 | iconTextSize = invDistWeightedInterpolate(minWidthDps, minHeightDps, points); |
| 173 | points.clear(); |
| 174 | for (InvariantDeviceProfile p : sDeviceProfiles) { |
| 175 | points.add(new DeviceProfileQuery(p, p.hotseatIconSize)); |
| 176 | } |
| 177 | hotseatIconSize = invDistWeightedInterpolate(minWidthDps, minHeightDps, points); |
| 178 | |
| 179 | // If the partner customization apk contains any grid overrides, apply them |
| 180 | // Supported overrides: numRows, numColumns, iconSize |
| 181 | applyPartnerDeviceProfileOverrides(context, dm); |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Apply any Partner customization grid overrides. |
| 186 | * |
| 187 | * Currently we support: all apps row / column count. |
| 188 | */ |
| 189 | private void applyPartnerDeviceProfileOverrides(Context ctx, DisplayMetrics dm) { |
| 190 | Partner p = Partner.get(ctx.getPackageManager()); |
| 191 | if (p != null) { |
| 192 | p.applyInvariantDeviceProfileOverrides(this, dm); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | @Thunk float dist(PointF p0, PointF p1) { |
| 197 | return (float) Math.sqrt((p1.x - p0.x)*(p1.x-p0.x) + |
| 198 | (p1.y-p0.y)*(p1.y-p0.y)); |
| 199 | } |
| 200 | |
| 201 | private float weight(PointF a, PointF b, |
| 202 | float pow) { |
| 203 | float d = dist(a, b); |
| 204 | if (d == 0f) { |
| 205 | return Float.POSITIVE_INFINITY; |
| 206 | } |
| 207 | return (float) (1f / Math.pow(d, pow)); |
| 208 | } |
| 209 | |
| 210 | /** Returns the closest device profile given the width and height and a list of profiles */ |
| 211 | private InvariantDeviceProfile findClosestDeviceProfile(float width, float height, |
| 212 | ArrayList<DeviceProfileQuery> points) { |
| 213 | return findClosestDeviceProfiles(width, height, points).get(0).profile; |
| 214 | } |
| 215 | |
| 216 | /** Returns the closest device profiles ordered by closeness to the specified width and height */ |
| 217 | private ArrayList<DeviceProfileQuery> findClosestDeviceProfiles(float width, float height, |
| 218 | ArrayList<DeviceProfileQuery> points) { |
| 219 | final PointF xy = new PointF(width, height); |
| 220 | |
| 221 | // Sort the profiles by their closeness to the dimensions |
| 222 | ArrayList<DeviceProfileQuery> pointsByNearness = points; |
| 223 | Collections.sort(pointsByNearness, new Comparator<DeviceProfileQuery>() { |
| 224 | public int compare(DeviceProfileQuery a, DeviceProfileQuery b) { |
| 225 | return (int) (dist(xy, a.dimens) - dist(xy, b.dimens)); |
| 226 | } |
| 227 | }); |
| 228 | |
| 229 | return pointsByNearness; |
| 230 | } |
| 231 | |
| 232 | private float invDistWeightedInterpolate(float width, float height, |
| 233 | ArrayList<DeviceProfileQuery> points) { |
| 234 | float sum = 0; |
| 235 | float weights = 0; |
| 236 | float pow = 5; |
| 237 | float kNearestNeighbors = 3; |
| 238 | final PointF xy = new PointF(width, height); |
| 239 | |
| 240 | ArrayList<DeviceProfileQuery> pointsByNearness = findClosestDeviceProfiles(width, height, |
| 241 | points); |
| 242 | |
| 243 | for (int i = 0; i < pointsByNearness.size(); ++i) { |
| 244 | DeviceProfileQuery p = pointsByNearness.get(i); |
| 245 | if (i < kNearestNeighbors) { |
| 246 | float w = weight(xy, p.dimens, pow); |
| 247 | if (w == Float.POSITIVE_INFINITY) { |
| 248 | return p.value; |
| 249 | } |
| 250 | weights += w; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | for (int i = 0; i < pointsByNearness.size(); ++i) { |
| 255 | DeviceProfileQuery p = pointsByNearness.get(i); |
| 256 | if (i < kNearestNeighbors) { |
| 257 | float w = weight(xy, p.dimens, pow); |
| 258 | sum += w * p.value / weights; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | return sum; |
| 263 | } |
| 264 | } |