android10_Launcher3_original

go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java

@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2019 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.uioverrides.states;
+
+import static android.view.View.VISIBLE;
+
+import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
+import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
+import static com.android.launcher3.anim.Interpolators.ACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_7;
+import static com.android.launcher3.states.RotationHelper.REQUEST_ROTATE;
+
+import android.view.View;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.R;
+import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.userevent.nano.LauncherLogProto;
+import com.android.quickstep.SysUINavigationMode;
+import com.android.quickstep.views.IconRecentsView;
+
+/**
+ * Definition for overview state
+ */
+public class OverviewState extends LauncherState {
+
+    // Scale recents takes before animating in
+    private static final float RECENTS_PREPARE_SCALE = 1.33f;
+
+    private static final int STATE_FLAGS = FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED
+            | FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_UI | FLAG_DISABLE_ACCESSIBILITY;
+
+    public OverviewState(int id) {
+        this(id, OVERVIEW_TRANSITION_MS, STATE_FLAGS);
+    }
+
+    protected OverviewState(int id, int transitionDuration, int stateFlags) {
+        super(id, LauncherLogProto.ContainerType.TASKSWITCHER, transitionDuration, stateFlags);
+    }
+
+    @Override
+    public ScaleAndTranslation getOverviewScaleAndTranslation(Launcher launcher) {
+        return new ScaleAndTranslation(1f, 0f, 0f);
+    }
+
+    @Override
+    public void onStateEnabled(Launcher launcher) {
+        IconRecentsView recentsView = launcher.getOverviewPanel();
+        recentsView.onBeginTransitionToOverview();
+        recentsView.setShowStatusBarForegroundScrim(true);
+        // Request orientation be set to unspecified, letting the system decide the best
+        // orientation.
+        launcher.getRotationHelper().setCurrentStateRequest(REQUEST_ROTATE);
+    }
+
+    @Override
+    public void onStateDisabled(Launcher launcher) {
+        IconRecentsView recentsView = launcher.getOverviewPanel();
+        recentsView.setShowStatusBarForegroundScrim(false);
+    }
+
+    @Override
+    public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
+        return new PageAlphaProvider(DEACCEL_2) {
+            @Override
+            public float getPageAlpha(int pageIndex) {
+                return 0;
+            }
+        };
+    }
+
+    @Override
+    public int getVisibleElements(Launcher launcher) {
+        return NONE;
+    }
+
+    @Override
+    public float getWorkspaceScrimAlpha(Launcher launcher) {
+        return 0.5f;
+    }
+
+    @Override
+    public String getDescription(Launcher launcher) {
+        return launcher.getString(R.string.accessibility_desc_recent_apps);
+    }
+
+    @Override
+    public void onBackPressed(Launcher launcher) {
+        // TODO: Add logic to go back to task if coming from a currently running task.
+        super.onBackPressed(launcher);
+    }
+
+    public static float getDefaultSwipeHeight(Launcher launcher) {
+        return getDefaultSwipeHeight(launcher.getDeviceProfile());
+    }
+
+    public static float getDefaultSwipeHeight(DeviceProfile dp) {
+        return dp.allAppsCellHeightPx - dp.allAppsIconTextSizePx;
+    }
+
+    @Override
+    public void prepareForAtomicAnimation(Launcher launcher, LauncherState fromState,
+            AnimatorSetBuilder builder) {
+        if (fromState == NORMAL && this == OVERVIEW) {
+            if (SysUINavigationMode.getMode(launcher) == SysUINavigationMode.Mode.NO_BUTTON) {
+                builder.setInterpolator(ANIM_WORKSPACE_SCALE, ACCEL);
+                builder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, ACCEL);
+            } else {
+                builder.setInterpolator(ANIM_WORKSPACE_SCALE, OVERSHOOT_1_2);
+            }
+            builder.setInterpolator(ANIM_WORKSPACE_FADE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_OVERVIEW_SCALE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, OVERSHOOT_1_7);
+            builder.setInterpolator(ANIM_OVERVIEW_FADE, OVERSHOOT_1_2);
+
+            View overview = launcher.getOverviewPanel();
+            if (overview.getVisibility() != VISIBLE) {
+                SCALE_PROPERTY.set(overview, RECENTS_PREPARE_SCALE);
+            }
+        }
+    }
+
+    public static OverviewState newBackgroundState(int id) {
+        return new OverviewState(id);
+    }
+
+    public static OverviewState newPeekState(int id) {
+        return new OverviewState(id);
+    }
+
+    public static OverviewState newSwitchState(int id) {
+        return new OverviewState(id);
+    }
+}