1/*
2 * Copyright (C) 2014 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
17package com.android.systemui.recents;
18
19import android.app.ActivityManager;
20import android.content.Context;
21import android.content.res.Configuration;
22import android.content.res.Resources;
23import android.graphics.Rect;
24import android.provider.Settings;
25import android.util.DisplayMetrics;
26import android.view.animation.AnimationUtils;
27import android.view.animation.Interpolator;
28
29import com.android.systemui.Prefs;
30import com.android.systemui.R;
31import com.android.systemui.recents.misc.Console;
32import com.android.systemui.recents.misc.SystemServicesProxy;
33
34
35/** A static Recents configuration for the current context
36 * NOTE: We should not hold any references to a Context from a static instance */
37public class RecentsConfiguration {
38    static RecentsConfiguration sInstance;
39    static int sPrevConfigurationHashCode;
40
41    /** Levels of svelte in increasing severity/austerity. */
42    // No svelting.
43    public static final int SVELTE_NONE = 0;
44    // Limit thumbnail cache to number of visible thumbnails when Recents was loaded, disable
45    // caching thumbnails as you scroll.
46    public static final int SVELTE_LIMIT_CACHE = 1;
47    // Disable the thumbnail cache, load thumbnails asynchronously when the activity loads and
48    // evict all thumbnails when hidden.
49    public static final int SVELTE_DISABLE_CACHE = 2;
50    // Disable all thumbnail loading.
51    public static final int SVELTE_DISABLE_LOADING = 3;
52
53    /** Interpolators */
54    public Interpolator fastOutSlowInInterpolator;
55    public Interpolator fastOutLinearInInterpolator;
56    public Interpolator linearOutSlowInInterpolator;
57    public Interpolator quintOutInterpolator;
58
59    /** Filtering */
60    public int filteringCurrentViewsAnimDuration;
61    public int filteringNewViewsAnimDuration;
62
63    /** Insets */
64    public Rect systemInsets = new Rect();
65    public Rect displayRect = new Rect();
66
67    /** Layout */
68    boolean isLandscape;
69    boolean hasTransposedSearchBar;
70    boolean hasTransposedNavBar;
71
72    /** Loading */
73    public int maxNumTasksToLoad;
74
75    /** Search bar */
76    public int searchBarSpaceHeightPx;
77
78    /** Task stack */
79    public int taskStackScrollDuration;
80    public int taskStackMaxDim;
81    public int taskStackTopPaddingPx;
82    public int dismissAllButtonSizePx;
83    public float taskStackWidthPaddingPct;
84    public float taskStackOverscrollPct;
85
86    /** Transitions */
87    public int transitionEnterFromAppDelay;
88    public int transitionEnterFromHomeDelay;
89
90    /** Task view animation and styles */
91    public int taskViewEnterFromAppDuration;
92    public int taskViewEnterFromHomeDuration;
93    public int taskViewEnterFromHomeStaggerDelay;
94    public int taskViewExitToAppDuration;
95    public int taskViewExitToHomeDuration;
96    public int taskViewRemoveAnimDuration;
97    public int taskViewRemoveAnimTranslationXPx;
98    public int taskViewTranslationZMinPx;
99    public int taskViewTranslationZMaxPx;
100    public int taskViewRoundedCornerRadiusPx;
101    public int taskViewHighlightPx;
102    public int taskViewAffiliateGroupEnterOffsetPx;
103    public float taskViewThumbnailAlpha;
104
105    /** Task bar colors */
106    public int taskBarViewDefaultBackgroundColor;
107    public int taskBarViewLightTextColor;
108    public int taskBarViewDarkTextColor;
109    public int taskBarViewHighlightColor;
110    public float taskBarViewAffiliationColorMinAlpha;
111
112    /** Task bar size & animations */
113    public int taskBarHeight;
114    public int taskBarDismissDozeDelaySeconds;
115
116    /** Nav bar scrim */
117    public int navBarScrimEnterDuration;
118
119    /** Launch states */
120    public boolean launchedWithAltTab;
121    public boolean launchedWithNoRecentTasks;
122    public boolean launchedFromAppWithThumbnail;
123    public boolean launchedFromHome;
124    public boolean launchedFromSearchHome;
125    public boolean launchedReuseTaskStackViews;
126    public boolean launchedHasConfigurationChanged;
127    public int launchedToTaskId;
128    public int launchedNumVisibleTasks;
129    public int launchedNumVisibleThumbnails;
130
131    /** Misc **/
132    public boolean useHardwareLayers;
133    public int altTabKeyDelay;
134    public boolean fakeShadows;
135
136    /** Dev options and global settings */
137    public boolean multiStackEnabled;
138    public boolean lockToAppEnabled;
139    public boolean developerOptionsEnabled;
140    public boolean debugModeEnabled;
141    public int svelteLevel;
142
143    /** Private constructor */
144    private RecentsConfiguration(Context context) {
145        // Properties that don't have to be reloaded with each configuration change can be loaded
146        // here.
147
148        // Interpolators
149        fastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context,
150                com.android.internal.R.interpolator.fast_out_slow_in);
151        fastOutLinearInInterpolator = AnimationUtils.loadInterpolator(context,
152                com.android.internal.R.interpolator.fast_out_linear_in);
153        linearOutSlowInInterpolator = AnimationUtils.loadInterpolator(context,
154                com.android.internal.R.interpolator.linear_out_slow_in);
155        quintOutInterpolator = AnimationUtils.loadInterpolator(context,
156                com.android.internal.R.interpolator.decelerate_quint);
157    }
158
159    /** Updates the configuration to the current context */
160    public static RecentsConfiguration reinitialize(Context context, SystemServicesProxy ssp) {
161        if (sInstance == null) {
162            sInstance = new RecentsConfiguration(context);
163        }
164        int configHashCode = context.getResources().getConfiguration().hashCode();
165        if (sPrevConfigurationHashCode != configHashCode) {
166            sInstance.update(context);
167            sPrevConfigurationHashCode = configHashCode;
168        }
169        sInstance.updateOnReinitialize(context, ssp);
170        return sInstance;
171    }
172
173    /** Returns the current recents configuration */
174    public static RecentsConfiguration getInstance() {
175        return sInstance;
176    }
177
178    /** Updates the state, given the specified context */
179    void update(Context context) {
180        Resources res = context.getResources();
181        DisplayMetrics dm = res.getDisplayMetrics();
182
183        // Debug mode
184        debugModeEnabled = Prefs.getBoolean(context, Prefs.Key.DEBUG_MODE_ENABLED,
185                false /* defaultValue */);
186        if (debugModeEnabled) {
187            Console.Enabled = true;
188        }
189
190        // Layout
191        isLandscape = res.getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
192        hasTransposedSearchBar = res.getBoolean(R.bool.recents_has_transposed_search_bar);
193        hasTransposedNavBar = res.getBoolean(R.bool.recents_has_transposed_nav_bar);
194
195        // Insets
196        displayRect.set(0, 0, dm.widthPixels, dm.heightPixels);
197
198        // Filtering
199        filteringCurrentViewsAnimDuration =
200                res.getInteger(R.integer.recents_filter_animate_current_views_duration);
201        filteringNewViewsAnimDuration =
202                res.getInteger(R.integer.recents_filter_animate_new_views_duration);
203
204        // Loading
205        maxNumTasksToLoad = ActivityManager.getMaxRecentTasksStatic();
206
207        // Search Bar
208        searchBarSpaceHeightPx = res.getDimensionPixelSize(R.dimen.recents_search_bar_space_height);
209
210        // Task stack
211        taskStackScrollDuration =
212                res.getInteger(R.integer.recents_animate_task_stack_scroll_duration);
213        taskStackWidthPaddingPct = res.getFloat(R.dimen.recents_stack_width_padding_percentage);
214        taskStackOverscrollPct = res.getFloat(R.dimen.recents_stack_overscroll_percentage);
215        taskStackMaxDim = res.getInteger(R.integer.recents_max_task_stack_view_dim);
216        taskStackTopPaddingPx = res.getDimensionPixelSize(R.dimen.recents_stack_top_padding);
217        dismissAllButtonSizePx = res.getDimensionPixelSize(R.dimen.recents_dismiss_all_button_size);
218
219        // Transition
220        transitionEnterFromAppDelay =
221                res.getInteger(R.integer.recents_enter_from_app_transition_duration);
222        transitionEnterFromHomeDelay =
223                res.getInteger(R.integer.recents_enter_from_home_transition_duration);
224
225        // Task view animation and styles
226        taskViewEnterFromAppDuration =
227                res.getInteger(R.integer.recents_task_enter_from_app_duration);
228        taskViewEnterFromHomeDuration =
229                res.getInteger(R.integer.recents_task_enter_from_home_duration);
230        taskViewEnterFromHomeStaggerDelay =
231                res.getInteger(R.integer.recents_task_enter_from_home_stagger_delay);
232        taskViewExitToAppDuration =
233                res.getInteger(R.integer.recents_task_exit_to_app_duration);
234        taskViewExitToHomeDuration =
235                res.getInteger(R.integer.recents_task_exit_to_home_duration);
236        taskViewRemoveAnimDuration =
237                res.getInteger(R.integer.recents_animate_task_view_remove_duration);
238        taskViewRemoveAnimTranslationXPx =
239                res.getDimensionPixelSize(R.dimen.recents_task_view_remove_anim_translation_x);
240        taskViewRoundedCornerRadiusPx =
241                res.getDimensionPixelSize(R.dimen.recents_task_view_rounded_corners_radius);
242        taskViewHighlightPx = res.getDimensionPixelSize(R.dimen.recents_task_view_highlight);
243        taskViewTranslationZMinPx = res.getDimensionPixelSize(R.dimen.recents_task_view_z_min);
244        taskViewTranslationZMaxPx = res.getDimensionPixelSize(R.dimen.recents_task_view_z_max);
245        taskViewAffiliateGroupEnterOffsetPx =
246                res.getDimensionPixelSize(R.dimen.recents_task_view_affiliate_group_enter_offset);
247        taskViewThumbnailAlpha = res.getFloat(R.dimen.recents_task_view_thumbnail_alpha);
248
249        // Task bar colors
250        taskBarViewDefaultBackgroundColor = context.getColor(
251                R.color.recents_task_bar_default_background_color);
252        taskBarViewLightTextColor = context.getColor(R.color.recents_task_bar_light_text_color);
253        taskBarViewDarkTextColor = context.getColor(R.color.recents_task_bar_dark_text_color);
254        taskBarViewHighlightColor = context.getColor(R.color.recents_task_bar_highlight_color);
255        taskBarViewAffiliationColorMinAlpha = res.getFloat(
256                R.dimen.recents_task_affiliation_color_min_alpha_percentage);
257
258        // Task bar size & animations
259        taskBarHeight = res.getDimensionPixelSize(R.dimen.recents_task_bar_height);
260        taskBarDismissDozeDelaySeconds =
261                res.getInteger(R.integer.recents_task_bar_dismiss_delay_seconds);
262
263        // Nav bar scrim
264        navBarScrimEnterDuration =
265                res.getInteger(R.integer.recents_nav_bar_scrim_enter_duration);
266
267        // Misc
268        useHardwareLayers = res.getBoolean(R.bool.config_recents_use_hardware_layers);
269        altTabKeyDelay = res.getInteger(R.integer.recents_alt_tab_key_delay);
270        fakeShadows = res.getBoolean(R.bool.config_recents_fake_shadows);
271        svelteLevel = res.getInteger(R.integer.recents_svelte_level);
272    }
273
274    /** Updates the system insets */
275    public void updateSystemInsets(Rect insets) {
276        systemInsets.set(insets);
277    }
278
279    /** Updates the states that need to be re-read whenever we re-initialize. */
280    void updateOnReinitialize(Context context, SystemServicesProxy ssp) {
281        // Check if the developer options are enabled
282        developerOptionsEnabled = ssp.getGlobalSetting(context,
283                Settings.Global.DEVELOPMENT_SETTINGS_ENABLED) != 0;
284        lockToAppEnabled = ssp.getSystemSetting(context,
285                Settings.System.LOCK_TO_APP_ENABLED) != 0;
286        multiStackEnabled = "true".equals(ssp.getSystemProperty("persist.sys.debug.multi_window"));
287    }
288
289    /** Called when the configuration has changed, and we want to reset any configuration specific
290     * members. */
291    public void updateOnConfigurationChange() {
292        // Reset this flag on configuration change to ensure that we recreate new task views
293        launchedReuseTaskStackViews = false;
294        // Set this flag to indicate that the configuration has changed since Recents last launched
295        launchedHasConfigurationChanged = true;
296    }
297
298    /** Returns whether the status bar scrim should be animated when shown for the first time. */
299    public boolean shouldAnimateStatusBarScrim() {
300        return launchedFromHome;
301    }
302
303    /** Returns whether the status bar scrim should be visible. */
304    public boolean hasStatusBarScrim() {
305        return !launchedWithNoRecentTasks;
306    }
307
308    /** Returns whether the nav bar scrim should be animated when shown for the first time. */
309    public boolean shouldAnimateNavBarScrim() {
310        return true;
311    }
312
313    /** Returns whether the nav bar scrim should be visible. */
314    public boolean hasNavBarScrim() {
315        // Only show the scrim if we have recent tasks, and if the nav bar is not transposed
316        return !launchedWithNoRecentTasks && (!hasTransposedNavBar || !isLandscape);
317    }
318
319    /**
320     * Returns the task stack bounds in the current orientation. These bounds do not account for
321     * the system insets.
322     */
323    public void getAvailableTaskStackBounds(int windowWidth, int windowHeight, int topInset,
324            int rightInset, Rect searchBarBounds, Rect taskStackBounds) {
325        if (isLandscape && hasTransposedSearchBar) {
326            // In landscape, the search bar appears on the left, but we overlay it on top
327            taskStackBounds.set(0, topInset, windowWidth - rightInset, windowHeight);
328        } else {
329            // In portrait, the search bar appears on the top (which already has the inset)
330            taskStackBounds.set(0, searchBarBounds.bottom, windowWidth, windowHeight);
331        }
332    }
333
334    /**
335     * Returns the search bar bounds in the current orientation.  These bounds do not account for
336     * the system insets.
337     */
338    public void getSearchBarBounds(int windowWidth, int windowHeight, int topInset,
339            Rect searchBarSpaceBounds) {
340        // Return empty rects if search is not enabled
341        int searchBarSize = searchBarSpaceHeightPx;
342        if (isLandscape && hasTransposedSearchBar) {
343            // In landscape, the search bar appears on the left
344            searchBarSpaceBounds.set(0, topInset, searchBarSize, windowHeight);
345        } else {
346            // In portrait, the search bar appears on the top
347            searchBarSpaceBounds.set(0, topInset, windowWidth, topInset + searchBarSize);
348        }
349    }
350}
351