change package name to uiuios

src/com/android/uiuios/states/SpringLoadedState.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2017 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.uiuios.states;
+
+import static com.android.uiuios.LauncherAnimUtils.SPRING_LOADED_TRANSITION_MS;
+import static com.android.uiuios.states.RotationHelper.REQUEST_LOCK;
+
+import android.graphics.Rect;
+
+import com.android.uiuios.DeviceProfile;
+import com.android.uiuios.InstallShortcutReceiver;
+import com.android.uiuios.Launcher;
+import com.android.uiuios.LauncherState;
+import com.android.uiuios.Workspace;
+import com.android.uiuios.userevent.nano.LauncherLogProto.ContainerType;
+
+/**
+ * Definition for spring loaded state used during drag and drop.
+ */
+public class SpringLoadedState extends LauncherState {
+
+    private static final int STATE_FLAGS = FLAG_MULTI_PAGE |
+            FLAG_DISABLE_ACCESSIBILITY | FLAG_DISABLE_RESTORE | FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED |
+            FLAG_DISABLE_PAGE_CLIPPING | FLAG_PAGE_BACKGROUNDS | FLAG_HIDE_BACK_BUTTON;
+
+    public SpringLoadedState(int id) {
+        super(id, ContainerType.OVERVIEW, SPRING_LOADED_TRANSITION_MS, STATE_FLAGS);
+    }
+
+    @Override
+    public ScaleAndTranslation getWorkspaceScaleAndTranslation(Launcher launcher) {
+        DeviceProfile grid = launcher.getDeviceProfile();
+        Workspace ws = launcher.getWorkspace();
+        if (ws.getChildCount() == 0) {
+            return super.getWorkspaceScaleAndTranslation(launcher);
+        }
+
+        if (grid.isVerticalBarLayout()) {
+            float scale = grid.workspaceSpringLoadShrinkFactor;
+            return new ScaleAndTranslation(scale, 0, 0);
+        }
+
+        float scale = grid.workspaceSpringLoadShrinkFactor;
+        Rect insets = launcher.getDragLayer().getInsets();
+
+        float scaledHeight = scale * ws.getNormalChildHeight();
+        float shrunkTop = insets.top + grid.dropTargetBarSizePx;
+        float shrunkBottom = ws.getMeasuredHeight() - insets.bottom
+                - grid.workspacePadding.bottom
+                - grid.workspaceSpringLoadedBottomSpace;
+        float totalShrunkSpace = shrunkBottom - shrunkTop;
+
+        float desiredCellTop = shrunkTop + (totalShrunkSpace - scaledHeight) / 2;
+
+        float halfHeight = ws.getHeight() / 2;
+        float myCenter = ws.getTop() + halfHeight;
+        float cellTopFromCenter = halfHeight - ws.getChildAt(0).getTop();
+        float actualCellTop = myCenter - cellTopFromCenter * scale;
+        return new ScaleAndTranslation(scale, 0, (desiredCellTop - actualCellTop) / scale);
+    }
+
+    @Override
+    public ScaleAndTranslation getHotseatScaleAndTranslation(Launcher launcher) {
+        return new ScaleAndTranslation(1, 0, 0);
+    }
+
+    @Override
+    public void onStateEnabled(Launcher launcher) {
+        Workspace ws = launcher.getWorkspace();
+        ws.showPageIndicatorAtCurrentScroll();
+        ws.getPageIndicator().setShouldAutoHide(false);
+
+        // Prevent any Un/InstallShortcutReceivers from updating the db while we are
+        // in spring loaded mode
+        InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_DRAG_AND_DROP);
+        launcher.getRotationHelper().setCurrentStateRequest(REQUEST_LOCK);
+    }
+
+    @Override
+    public float getWorkspaceScrimAlpha(Launcher launcher) {
+        return 0.3f;
+    }
+
+    @Override
+    public void onStateDisabled(final Launcher launcher) {
+        launcher.getWorkspace().getPageIndicator().setShouldAutoHide(true);
+
+        // Re-enable any Un/InstallShortcutReceiver and now process any queued items
+        InstallShortcutReceiver.disableAndFlushInstallQueue(
+                InstallShortcutReceiver.FLAG_DRAG_AND_DROP, launcher);
+    }
+}