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Diffstat (limited to 'src/com/android/launcher3/InvariantDeviceProfile.java')
| -rw-r--r-- | src/com/android/launcher3/InvariantDeviceProfile.java | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java new file mode 100644 index 000000000..fcd6d60f6 --- /dev/null +++ b/src/com/android/launcher3/InvariantDeviceProfile.java @@ -0,0 +1,264 @@ +/* + * Copyright (C) 2015 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.launcher3; + +import android.content.Context; +import android.graphics.Point; +import android.graphics.PointF; +import android.util.DisplayMetrics; +import android.util.TypedValue; +import android.view.Display; +import android.view.WindowManager; + +import com.android.launcher3.util.Thunk; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; + +public class InvariantDeviceProfile { + private static final String TAG = "InvariantDeviceProfile"; + + // This is a static that we use for the default icon size on a 4/5-inch phone + static float DEFAULT_ICON_SIZE_DP = 60; + + + static ArrayList<InvariantDeviceProfile> sDeviceProfiles = + new ArrayList<InvariantDeviceProfile>(); + static { + sDeviceProfiles.add(new InvariantDeviceProfile("Super Short Stubby", + 255, 300, 2, 3, 2, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Shorter Stubby", + 255, 400, 3, 3, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Short Stubby", + 275, 420, 3, 4, 3, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Stubby", + 255, 450, 3, 4, 3, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Nexus S", + 296, 491.33f, 4, 4, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 4", + 335, 567, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 5", + 359, 567, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4)); + sDeviceProfiles.add(new InvariantDeviceProfile("Large Phone", + 406, 694, 5, 5, 4, 4, 64, 14.4f, 5, 56, R.xml.default_workspace_5x5)); + // The tablet profile is odd in that the landscape orientation + // also includes the nav bar on the side + sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 7", + 575, 904, 5, 6, 4, 5, 72, 14.4f, 7, 60, R.xml.default_workspace_5x6)); + // Larger tablet profiles always have system bars on the top & bottom + sDeviceProfiles.add(new InvariantDeviceProfile("Nexus 10", + 727, 1207, 5, 6, 4, 5, 76, 14.4f, 7, 64, R.xml.default_workspace_5x6)); + sDeviceProfiles.add(new InvariantDeviceProfile("20-inch Tablet", + 1527, 2527, 7, 7, 6, 6, 100, 20, 7, 72, R.xml.default_workspace_4x4)); + } + + class DeviceProfileQuery { + InvariantDeviceProfile profile; + float widthDps; + float heightDps; + float value; + PointF dimens; + + DeviceProfileQuery(InvariantDeviceProfile p, float v) { + widthDps = p.minWidthDps; + heightDps = p.minHeightDps; + value = v; + dimens = new PointF(widthDps, heightDps); + profile = p; + } + } + + // Profile-defining invariant properties + String name; + float minWidthDps; + float minHeightDps; + public int numRows; + public int numColumns; + public int numFolderRows; + public int numFolderColumns; + float iconSize; + float iconTextSize; + float numHotseatIcons; + float hotseatIconSize; + int defaultLayoutId; + + // Derived invariant properties + int hotseatAllAppsRank; + + InvariantDeviceProfile() { + } + + InvariantDeviceProfile(String n, float w, float h, int r, int c, int fr, int fc, + float is, float its, float hs, float his, int dlId) { + // Ensure that we have an odd number of hotseat items (since we need to place all apps) + if (hs % 2 == 0) { + throw new RuntimeException("All Device Profiles must have an odd number of hotseat spaces"); + } + + name = n; + minWidthDps = w; + minHeightDps = h; + numRows = r; + numColumns = c; + numFolderRows = fr; + numFolderColumns = fc; + iconSize = is; + iconTextSize = its; + numHotseatIcons = hs; + hotseatIconSize = his; + defaultLayoutId = dlId; + } + + InvariantDeviceProfile(Context context) { + WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); + Display display = wm.getDefaultDisplay(); + DisplayMetrics dm = new DisplayMetrics(); + display.getMetrics(dm); + + Point smallestSize = new Point(); + Point largestSize = new Point(); + display.getCurrentSizeRange(smallestSize, largestSize); + + minWidthDps = Utilities.dpiFromPx(Math.min(smallestSize.x, smallestSize.y), dm); + minHeightDps = Utilities.dpiFromPx(Math.min(largestSize.x, largestSize.y), dm); + + ArrayList<DeviceProfileQuery> points = + new ArrayList<DeviceProfileQuery>(); + + // Find the closes profile given the width/height + for (InvariantDeviceProfile p : sDeviceProfiles) { + points.add(new DeviceProfileQuery(p, 0f)); + } + + InvariantDeviceProfile closestProfile = + findClosestDeviceProfile(minWidthDps, minHeightDps, points); + + // The following properties are inherited directly from the nearest archetypal profile + numRows = closestProfile.numRows; + numColumns = closestProfile.numColumns; + numHotseatIcons = closestProfile.numHotseatIcons; + hotseatAllAppsRank = (int) (numHotseatIcons / 2); + defaultLayoutId = closestProfile.defaultLayoutId; + numFolderRows = closestProfile.numFolderRows; + numFolderColumns = closestProfile.numFolderColumns; + + + // The following properties are interpolated based on proximity to nearby archetypal + // profiles + points.clear(); + for (InvariantDeviceProfile p : sDeviceProfiles) { + points.add(new DeviceProfileQuery(p, p.iconSize)); + } + iconSize = invDistWeightedInterpolate(minWidthDps, minHeightDps, points); + points.clear(); + for (InvariantDeviceProfile p : sDeviceProfiles) { + points.add(new DeviceProfileQuery(p, p.iconTextSize)); + } + iconTextSize = invDistWeightedInterpolate(minWidthDps, minHeightDps, points); + points.clear(); + for (InvariantDeviceProfile p : sDeviceProfiles) { + points.add(new DeviceProfileQuery(p, p.hotseatIconSize)); + } + hotseatIconSize = invDistWeightedInterpolate(minWidthDps, minHeightDps, points); + + // If the partner customization apk contains any grid overrides, apply them + // Supported overrides: numRows, numColumns, iconSize + applyPartnerDeviceProfileOverrides(context, dm); + } + + /** + * Apply any Partner customization grid overrides. + * + * Currently we support: all apps row / column count. + */ + private void applyPartnerDeviceProfileOverrides(Context ctx, DisplayMetrics dm) { + Partner p = Partner.get(ctx.getPackageManager()); + if (p != null) { + p.applyInvariantDeviceProfileOverrides(this, dm); + } + } + + @Thunk float dist(PointF p0, PointF p1) { + return (float) Math.sqrt((p1.x - p0.x)*(p1.x-p0.x) + + (p1.y-p0.y)*(p1.y-p0.y)); + } + + private float weight(PointF a, PointF b, + float pow) { + float d = dist(a, b); + if (d == 0f) { + return Float.POSITIVE_INFINITY; + } + return (float) (1f / Math.pow(d, pow)); + } + + /** Returns the closest device profile given the width and height and a list of profiles */ + private InvariantDeviceProfile findClosestDeviceProfile(float width, float height, + ArrayList<DeviceProfileQuery> points) { + return findClosestDeviceProfiles(width, height, points).get(0).profile; + } + + /** Returns the closest device profiles ordered by closeness to the specified width and height */ + private ArrayList<DeviceProfileQuery> findClosestDeviceProfiles(float width, float height, + ArrayList<DeviceProfileQuery> points) { + final PointF xy = new PointF(width, height); + + // Sort the profiles by their closeness to the dimensions + ArrayList<DeviceProfileQuery> pointsByNearness = points; + Collections.sort(pointsByNearness, new Comparator<DeviceProfileQuery>() { + public int compare(DeviceProfileQuery a, DeviceProfileQuery b) { + return (int) (dist(xy, a.dimens) - dist(xy, b.dimens)); + } + }); + + return pointsByNearness; + } + + private float invDistWeightedInterpolate(float width, float height, + ArrayList<DeviceProfileQuery> points) { + float sum = 0; + float weights = 0; + float pow = 5; + float kNearestNeighbors = 3; + final PointF xy = new PointF(width, height); + + ArrayList<DeviceProfileQuery> pointsByNearness = findClosestDeviceProfiles(width, height, + points); + + for (int i = 0; i < pointsByNearness.size(); ++i) { + DeviceProfileQuery p = pointsByNearness.get(i); + if (i < kNearestNeighbors) { + float w = weight(xy, p.dimens, pow); + if (w == Float.POSITIVE_INFINITY) { + return p.value; + } + weights += w; + } + } + + for (int i = 0; i < pointsByNearness.size(); ++i) { + DeviceProfileQuery p = pointsByNearness.get(i); + if (i < kNearestNeighbors) { + float w = weight(xy, p.dimens, pow); + sum += w * p.value / weights; + } + } + + return sum; + } +} |