1 files changed, 433 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
new file mode 100644
index 0000000..4064377
--- /dev/null
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -0,0 +1,433 @@
+/*
+ * Copyright (C) 2012 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.server.wm;
+
+import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID;
+import static com.android.server.wm.WindowManagerService.DEBUG_STACK;
+import static com.android.server.wm.WindowManagerService.DEBUG_VISIBILITY;
+import static com.android.server.wm.WindowManagerService.TAG;
+
+import android.graphics.Rect;
+import android.graphics.Region;
+import android.util.EventLog;
+import android.util.Slog;
+import android.view.Display;
+import android.view.DisplayInfo;
+import android.view.Surface;
+import com.android.server.EventLogTags;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+
+class DisplayContentList extends ArrayList<DisplayContent> {
+}
+
+/**
+ * Utility class for keeping track of the WindowStates and other pertinent contents of a
+ * particular Display.
+ *
+ * IMPORTANT: No method from this class should ever be used without holding
+ * WindowManagerService.mWindowMap.
+ */
+class DisplayContent {
+
+    /** Unique identifier of this stack. */
+    private final int mDisplayId;
+
+    /** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element
+     * from mDisplayWindows; */
+    private WindowList mWindows = new WindowList();
+
+    // This protects the following display size properties, so that
+    // getDisplaySize() doesn't need to acquire the global lock.  This is
+    // needed because the window manager sometimes needs to use ActivityThread
+    // while it has its global state locked (for example to load animation
+    // resources), but the ActivityThread also needs get the current display
+    // size sometimes when it has its package lock held.
+    //
+    // These will only be modified with both mWindowMap and mDisplaySizeLock
+    // held (in that order) so the window manager doesn't need to acquire this
+    // lock when needing these values in its normal operation.
+    final Object mDisplaySizeLock = new Object();
+    int mInitialDisplayWidth = 0;
+    int mInitialDisplayHeight = 0;
+    int mInitialDisplayDensity = 0;
+    int mBaseDisplayWidth = 0;
+    int mBaseDisplayHeight = 0;
+    int mBaseDisplayDensity = 0;
+    private final DisplayInfo mDisplayInfo = new DisplayInfo();
+    private final Display mDisplay;
+
+    Rect mBaseDisplayRect = new Rect();
+    Rect mContentRect = new Rect();
+
+    // Accessed directly by all users.
+    boolean layoutNeeded;
+    int pendingLayoutChanges;
+    final boolean isDefaultDisplay;
+
+    /**
+     * Window tokens that are in the process of exiting, but still
+     * on screen for animations.
+     */
+    final ArrayList<WindowToken> mExitingTokens = new ArrayList<WindowToken>();
+
+    /**
+     * Application tokens that are in the process of exiting, but still
+     * on screen for animations.
+     */
+    final AppTokenList mExitingAppTokens = new AppTokenList();
+
+    /** Array containing all TaskStacks on this display.  Array
+     * is stored in display order with the current bottom stack at 0. */
+    private ArrayList<TaskStack> mStacks = new ArrayList<TaskStack>();
+
+    /** A special TaskStack with id==HOME_STACK_ID that moves to the bottom whenever any TaskStack
+     * (except a future lockscreen TaskStack) moves to the top. */
+    private TaskStack mHomeStack = null;
+
+    /** Detect user tapping outside of current focused stack bounds .*/
+    StackTapPointerEventListener mTapDetector;
+
+    /** Detect user tapping outside of current focused stack bounds .*/
+    Region mTouchExcludeRegion = new Region();
+
+    /** Save allocating when retrieving tasks */
+    private ArrayList<Task> mTaskHistory = new ArrayList<Task>();
+
+    /** Save allocating when calculating rects */
+    Rect mTmpRect = new Rect();
+
+    final WindowManagerService mService;
+
+    /**
+     * @param display May not be null.
+     * @param service TODO(cmautner):
+     */
+    DisplayContent(Display display, WindowManagerService service) {
+        mDisplay = display;
+        mDisplayId = display.getDisplayId();
+        display.getDisplayInfo(mDisplayInfo);
+        isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY;
+        mService = service;
+    }
+
+    int getDisplayId() {
+        return mDisplayId;
+    }
+
+    WindowList getWindowList() {
+        return mWindows;
+    }
+
+    Display getDisplay() {
+        return mDisplay;
+    }
+
+    DisplayInfo getDisplayInfo() {
+        return mDisplayInfo;
+    }
+
+    /**
+     * Returns true if the specified UID has access to this display.
+     */
+    public boolean hasAccess(int uid) {
+        return mDisplay.hasAccess(uid);
+    }
+
+    public boolean isPrivate() {
+        return (mDisplay.getFlags() & Display.FLAG_PRIVATE) != 0;
+    }
+
+    /**
+     * Retrieve the tasks on this display in stack order from the bottommost TaskStack up.
+     * @return All the Tasks, in order, on this display.
+     */
+    ArrayList<Task> getTasks() {
+        return mTaskHistory;
+    }
+
+    void addTask(Task task, boolean toTop) {
+        mTaskHistory.remove(task);
+
+        final int userId = task.mUserId;
+        int taskNdx;
+        final int numTasks = mTaskHistory.size();
+        if (toTop) {
+            for (taskNdx = numTasks - 1; taskNdx >= 0; --taskNdx) {
+                if (mTaskHistory.get(taskNdx).mUserId == userId) {
+                    break;
+                }
+            }
+            ++taskNdx;
+        } else {
+            for (taskNdx = 0; taskNdx < numTasks; ++taskNdx) {
+                if (mTaskHistory.get(taskNdx).mUserId == userId) {
+                    break;
+                }
+            }
+        }
+
+        mTaskHistory.add(taskNdx, task);
+        EventLog.writeEvent(EventLogTags.WM_TASK_MOVED, task.taskId, toTop ? 1 : 0, taskNdx);
+    }
+
+    void removeTask(Task task) {
+        mTaskHistory.remove(task);
+    }
+
+    TaskStack getHomeStack() {
+        return mHomeStack;
+    }
+
+    void updateDisplayInfo() {
+        // Save old size.
+        int oldWidth = mDisplayInfo.logicalWidth;
+        int oldHeight = mDisplayInfo.logicalHeight;
+        mDisplay.getDisplayInfo(mDisplayInfo);
+
+        for (int i = mStacks.size() - 1; i >= 0; --i) {
+            final TaskStack stack = mStacks.get(i);
+            if (!stack.isFullscreen()) {
+                stack.resizeBounds(oldWidth, oldHeight, mDisplayInfo.logicalWidth,
+                        mDisplayInfo.logicalHeight);
+            }
+        }
+    }
+
+    void getLogicalDisplayRect(Rect out) {
+        updateDisplayInfo();
+        // Uses same calculation as in LogicalDisplay#configureDisplayInTransactionLocked.
+        final int orientation = mDisplayInfo.rotation;
+        boolean rotated = (orientation == Surface.ROTATION_90
+                || orientation == Surface.ROTATION_270);
+        final int physWidth = rotated ? mBaseDisplayHeight : mBaseDisplayWidth;
+        final int physHeight = rotated ? mBaseDisplayWidth : mBaseDisplayHeight;
+        int width = mDisplayInfo.logicalWidth;
+        int left = (physWidth - width) / 2;
+        int height = mDisplayInfo.logicalHeight;
+        int top = (physHeight - height) / 2;
+        out.set(left, top, left + width, top + height);
+    }
+
+    /** @return The number of tokens in all of the Tasks on this display. */
+    int numTokens() {
+        int count = 0;
+        for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
+            count += mTaskHistory.get(taskNdx).mAppTokens.size();
+        }
+        return count;
+    }
+
+    /** Refer to {@link WindowManagerService#createStack(int, int)} */
+    TaskStack createStack(int stackId) {
+        if (DEBUG_STACK) Slog.d(TAG, "createStack: stackId=" + stackId);
+        TaskStack newStack = new TaskStack(mService, stackId, this);
+        if (stackId == HOME_STACK_ID) {
+            if (mHomeStack != null) {
+                throw new IllegalArgumentException("createStack: HOME_STACK_ID (0) not first.");
+            }
+            mHomeStack = newStack;
+        }
+        mStacks.add(newStack);
+        layoutNeeded = true;
+        return newStack;
+    }
+
+    void moveStack(TaskStack stack, boolean toTop) {
+        mStacks.remove(stack);
+        mStacks.add(toTop ? mStacks.size() : 0, stack);
+    }
+
+    TaskStack removeStack(TaskStack stack) {
+        mStacks.remove(stack);
+        if (!mStacks.isEmpty()) {
+            return mStacks.get(mStacks.size() - 1);
+        }
+        return null;
+    }
+
+    /**
+     * Propagate the new bounds to all child stacks.
+     * @param contentRect The bounds to apply at the top level.
+     */
+    void resize(Rect contentRect) {
+        mContentRect.set(contentRect);
+    }
+
+    boolean getStackBounds(int stackId, Rect bounds) {
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            final TaskStack stack = mStacks.get(stackNdx);
+            if (stackId == stack.mStackId) {
+                bounds.set(stack.mBounds);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    int stackIdFromPoint(int x, int y) {
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            final TaskStack stack = mStacks.get(stackNdx);
+            stack.getBounds(mTmpRect);
+            if (mTmpRect.contains(x, y)) {
+                return stack.mStackId;
+            }
+        }
+        return -1;
+    }
+
+    void setTouchExcludeRegion(TaskStack focusedStack) {
+        mTouchExcludeRegion.set(mBaseDisplayRect);
+        WindowList windows = getWindowList();
+        for (int i = windows.size() - 1; i >= 0; --i) {
+            final WindowState win = windows.get(i);
+            final TaskStack stack = win.getStack();
+            if (win.isVisibleLw() && stack != null && stack != focusedStack) {
+                mTmpRect.set(win.mVisibleFrame);
+                mTmpRect.intersect(win.mVisibleInsets);
+                mTouchExcludeRegion.op(mTmpRect, Region.Op.DIFFERENCE);
+            }
+        }
+    }
+
+    void switchUserStacks(int oldUserId, int newUserId) {
+        final WindowList windows = getWindowList();
+        for (int i = 0; i < windows.size(); i++) {
+            final WindowState win = windows.get(i);
+            if (win.isHiddenFromUserLocked()) {
+                if (DEBUG_VISIBILITY) Slog.w(TAG, "user changing " + newUserId + " hiding "
+                        + win + ", attrs=" + win.mAttrs.type + ", belonging to "
+                        + win.mOwnerUid);
+                win.hideLw(false);
+            }
+        }
+
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            mStacks.get(stackNdx).switchUser(newUserId);
+        }
+    }
+
+    void resetAnimationBackgroundAnimator() {
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            mStacks.get(stackNdx).resetAnimationBackgroundAnimator();
+        }
+    }
+
+    boolean animateDimLayers() {
+        boolean result = false;
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            result |= mStacks.get(stackNdx).animateDimLayers();
+        }
+        return result;
+    }
+
+    void resetDimming() {
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            mStacks.get(stackNdx).resetDimmingTag();
+        }
+    }
+
+    boolean isDimming() {
+        boolean result = false;
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            result |= mStacks.get(stackNdx).isDimming();
+        }
+        return result;
+    }
+
+    void stopDimmingIfNeeded() {
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            mStacks.get(stackNdx).stopDimmingIfNeeded();
+        }
+    }
+
+    void close() {
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            mStacks.get(stackNdx).close();
+        }
+    }
+
+    public void dump(String prefix, PrintWriter pw) {
+        pw.print(prefix); pw.print("Display: mDisplayId="); pw.println(mDisplayId);
+        final String subPrefix = "  " + prefix;
+        pw.print(subPrefix); pw.print("init="); pw.print(mInitialDisplayWidth); pw.print("x");
+            pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity);
+            pw.print("dpi");
+            if (mInitialDisplayWidth != mBaseDisplayWidth
+                    || mInitialDisplayHeight != mBaseDisplayHeight
+                    || mInitialDisplayDensity != mBaseDisplayDensity) {
+                pw.print(" base=");
+                pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight);
+                pw.print(" "); pw.print(mBaseDisplayDensity); pw.print("dpi");
+            }
+            pw.print(" cur=");
+            pw.print(mDisplayInfo.logicalWidth);
+            pw.print("x"); pw.print(mDisplayInfo.logicalHeight);
+            pw.print(" app=");
+            pw.print(mDisplayInfo.appWidth);
+            pw.print("x"); pw.print(mDisplayInfo.appHeight);
+            pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth);
+            pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight);
+            pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth);
+            pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight);
+            pw.print(subPrefix); pw.print("layoutNeeded="); pw.println(layoutNeeded);
+        for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
+            final TaskStack stack = mStacks.get(stackNdx);
+            pw.print(prefix); pw.print("mStacks[" + stackNdx + "]"); pw.println(stack.mStackId);
+            stack.dump(prefix + "  ", pw);
+        }
+        int ndx = numTokens();
+        if (ndx > 0) {
+            pw.println();
+            pw.println("  Application tokens in Z order:");
+            getTasks();
+            for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
+                AppTokenList tokens = mTaskHistory.get(taskNdx).mAppTokens;
+                for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx) {
+                    final AppWindowToken wtoken = tokens.get(tokenNdx);
+                    pw.print("  App #"); pw.print(ndx--);
+                            pw.print(' '); pw.print(wtoken); pw.println(":");
+                    wtoken.dump(pw, "    ");
+                }
+            }
+        }
+        if (mExitingTokens.size() > 0) {
+            pw.println();
+            pw.println("  Exiting tokens:");
+            for (int i=mExitingTokens.size()-1; i>=0; i--) {
+                WindowToken token = mExitingTokens.get(i);
+                pw.print("  Exiting #"); pw.print(i);
+                pw.print(' '); pw.print(token);
+                pw.println(':');
+                token.dump(pw, "    ");
+            }
+        }
+        if (mExitingAppTokens.size() > 0) {
+            pw.println();
+            pw.println("  Exiting application tokens:");
+            for (int i=mExitingAppTokens.size()-1; i>=0; i--) {
+                WindowToken token = mExitingAppTokens.get(i);
+                pw.print("  Exiting App #"); pw.print(i);
+                  pw.print(' '); pw.print(token);
+                  pw.println(':');
+                  token.dump(pw, "    ");
+            }
+        }
+        pw.println();
+    }
+}