/* * Copyright (C) 2011 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 android.view.IWindowId; import com.android.internal.view.IInputContext; import com.android.internal.view.IInputMethodClient; import com.android.internal.view.IInputMethodManager; import com.android.server.wm.WindowManagerService.H; import android.content.ClipData; import android.content.Context; import android.content.res.Configuration; import android.graphics.Rect; import android.graphics.Region; import android.os.Binder; import android.os.Bundle; import android.os.IBinder; import android.os.Parcel; import android.os.Process; import android.os.RemoteException; import android.os.ServiceManager; import android.os.UserHandle; import android.util.Slog; import android.view.Display; import android.view.IWindow; import android.view.IWindowSession; import android.view.InputChannel; import android.view.Surface; import android.view.SurfaceControl; import android.view.SurfaceSession; import android.view.WindowManager; import java.io.PrintWriter; /** * This class represents an active client session. There is generally one * Session object per process that is interacting with the window manager. */ final class Session extends IWindowSession.Stub implements IBinder.DeathRecipient { final WindowManagerService mService; final IInputMethodClient mClient; final IInputContext mInputContext; final int mUid; final int mPid; final String mStringName; SurfaceSession mSurfaceSession; int mNumWindow = 0; boolean mClientDead = false; public Session(WindowManagerService service, IInputMethodClient client, IInputContext inputContext) { mService = service; mClient = client; mInputContext = inputContext; mUid = Binder.getCallingUid(); mPid = Binder.getCallingPid(); StringBuilder sb = new StringBuilder(); sb.append("Session{"); sb.append(Integer.toHexString(System.identityHashCode(this))); sb.append(" "); sb.append(mPid); if (mUid < Process.FIRST_APPLICATION_UID) { sb.append(":"); sb.append(mUid); } else { sb.append(":u"); sb.append(UserHandle.getUserId(mUid)); sb.append('a'); sb.append(UserHandle.getAppId(mUid)); } sb.append("}"); mStringName = sb.toString(); synchronized (mService.mWindowMap) { if (mService.mInputMethodManager == null && mService.mHaveInputMethods) { IBinder b = ServiceManager.getService( Context.INPUT_METHOD_SERVICE); mService.mInputMethodManager = IInputMethodManager.Stub.asInterface(b); } } long ident = Binder.clearCallingIdentity(); try { // Note: it is safe to call in to the input method manager // here because we are not holding our lock. if (mService.mInputMethodManager != null) { mService.mInputMethodManager.addClient(client, inputContext, mUid, mPid); } else { client.setUsingInputMethod(false); } client.asBinder().linkToDeath(this, 0); } catch (RemoteException e) { // The caller has died, so we can just forget about this. try { if (mService.mInputMethodManager != null) { mService.mInputMethodManager.removeClient(client); } } catch (RemoteException ee) { } } finally { Binder.restoreCallingIdentity(ident); } } @Override public boolean onTransact(int code, Parcel data, Parcel reply, int flags) throws RemoteException { try { return super.onTransact(code, data, reply, flags); } catch (RuntimeException e) { // Log all 'real' exceptions thrown to the caller if (!(e instanceof SecurityException)) { Slog.wtf(WindowManagerService.TAG, "Window Session Crash", e); } throw e; } } public void binderDied() { // Note: it is safe to call in to the input method manager // here because we are not holding our lock. try { if (mService.mInputMethodManager != null) { mService.mInputMethodManager.removeClient(mClient); } } catch (RemoteException e) { } synchronized(mService.mWindowMap) { mClient.asBinder().unlinkToDeath(this, 0); mClientDead = true; killSessionLocked(); } } @Override public int add(IWindow window, int seq, WindowManager.LayoutParams attrs, int viewVisibility, Rect outContentInsets, InputChannel outInputChannel) { return addToDisplay(window, seq, attrs, viewVisibility, Display.DEFAULT_DISPLAY, outContentInsets, outInputChannel); } @Override public int addToDisplay(IWindow window, int seq, WindowManager.LayoutParams attrs, int viewVisibility, int displayId, Rect outContentInsets, InputChannel outInputChannel) { return mService.addWindow(this, window, seq, attrs, viewVisibility, displayId, outContentInsets, outInputChannel); } @Override public int addWithoutInputChannel(IWindow window, int seq, WindowManager.LayoutParams attrs, int viewVisibility, Rect outContentInsets) { return addToDisplayWithoutInputChannel(window, seq, attrs, viewVisibility, Display.DEFAULT_DISPLAY, outContentInsets); } @Override public int addToDisplayWithoutInputChannel(IWindow window, int seq, WindowManager.LayoutParams attrs, int viewVisibility, int displayId, Rect outContentInsets) { return mService.addWindow(this, window, seq, attrs, viewVisibility, displayId, outContentInsets, null); } public void remove(IWindow window) { mService.removeWindow(this, window); } public int relayout(IWindow window, int seq, WindowManager.LayoutParams attrs, int requestedWidth, int requestedHeight, int viewFlags, int flags, Rect outFrame, Rect outOverscanInsets, Rect outContentInsets, Rect outVisibleInsets, Configuration outConfig, Surface outSurface) { if (false) Slog.d(WindowManagerService.TAG, ">>>>>> ENTERED relayout from " + Binder.getCallingPid()); int res = mService.relayoutWindow(this, window, seq, attrs, requestedWidth, requestedHeight, viewFlags, flags, outFrame, outOverscanInsets, outContentInsets, outVisibleInsets, outConfig, outSurface); if (false) Slog.d(WindowManagerService.TAG, "<<<<<< EXITING relayout to " + Binder.getCallingPid()); return res; } public void performDeferredDestroy(IWindow window) { mService.performDeferredDestroyWindow(this, window); } public boolean outOfMemory(IWindow window) { return mService.outOfMemoryWindow(this, window); } public void setTransparentRegion(IWindow window, Region region) { mService.setTransparentRegionWindow(this, window, region); } public void setInsets(IWindow window, int touchableInsets, Rect contentInsets, Rect visibleInsets, Region touchableArea) { mService.setInsetsWindow(this, window, touchableInsets, contentInsets, visibleInsets, touchableArea); } public void getDisplayFrame(IWindow window, Rect outDisplayFrame) { mService.getWindowDisplayFrame(this, window, outDisplayFrame); } public void finishDrawing(IWindow window) { if (WindowManagerService.localLOGV) Slog.v( WindowManagerService.TAG, "IWindow finishDrawing called for " + window); mService.finishDrawingWindow(this, window); } public void setInTouchMode(boolean mode) { synchronized(mService.mWindowMap) { mService.mInTouchMode = mode; } } public boolean getInTouchMode() { synchronized(mService.mWindowMap) { return mService.mInTouchMode; } } public boolean performHapticFeedback(IWindow window, int effectId, boolean always) { synchronized(mService.mWindowMap) { long ident = Binder.clearCallingIdentity(); try { return mService.mPolicy.performHapticFeedbackLw( mService.windowForClientLocked(this, window, true), effectId, always); } finally { Binder.restoreCallingIdentity(ident); } } } /* Drag/drop */ public IBinder prepareDrag(IWindow window, int flags, int width, int height, Surface outSurface) { return mService.prepareDragSurface(window, mSurfaceSession, flags, width, height, outSurface); } public boolean performDrag(IWindow window, IBinder dragToken, float touchX, float touchY, float thumbCenterX, float thumbCenterY, ClipData data) { if (WindowManagerService.DEBUG_DRAG) { Slog.d(WindowManagerService.TAG, "perform drag: win=" + window + " data=" + data); } synchronized (mService.mWindowMap) { if (mService.mDragState == null) { Slog.w(WindowManagerService.TAG, "No drag prepared"); throw new IllegalStateException("performDrag() without prepareDrag()"); } if (dragToken != mService.mDragState.mToken) { Slog.w(WindowManagerService.TAG, "Performing mismatched drag"); throw new IllegalStateException("performDrag() does not match prepareDrag()"); } WindowState callingWin = mService.windowForClientLocked(null, window, false); if (callingWin == null) { Slog.w(WindowManagerService.TAG, "Bad requesting window " + window); return false; // !!! TODO: throw here? } // !!! TODO: if input is not still focused on the initiating window, fail // the drag initiation (e.g. an alarm window popped up just as the application // called performDrag() mService.mH.removeMessages(H.DRAG_START_TIMEOUT, window.asBinder()); // !!! TODO: extract the current touch (x, y) in screen coordinates. That // will let us eliminate the (touchX,touchY) parameters from the API. // !!! FIXME: put all this heavy stuff onto the mH looper, as well as // the actual drag event dispatch stuff in the dragstate Display display = callingWin.mDisplayContent.getDisplay(); mService.mDragState.register(display); mService.mInputMonitor.updateInputWindowsLw(true /*force*/); if (!mService.mInputManager.transferTouchFocus(callingWin.mInputChannel, mService.mDragState.mServerChannel)) { Slog.e(WindowManagerService.TAG, "Unable to transfer touch focus"); mService.mDragState.unregister(); mService.mDragState = null; mService.mInputMonitor.updateInputWindowsLw(true /*force*/); return false; } mService.mDragState.mData = data; mService.mDragState.mCurrentX = touchX; mService.mDragState.mCurrentY = touchY; mService.mDragState.broadcastDragStartedLw(touchX, touchY); // remember the thumb offsets for later mService.mDragState.mThumbOffsetX = thumbCenterX; mService.mDragState.mThumbOffsetY = thumbCenterY; // Make the surface visible at the proper location final SurfaceControl surfaceControl = mService.mDragState.mSurfaceControl; if (WindowManagerService.SHOW_LIGHT_TRANSACTIONS) Slog.i( WindowManagerService.TAG, ">>> OPEN TRANSACTION performDrag"); SurfaceControl.openTransaction(); try { surfaceControl.setPosition(touchX - thumbCenterX, touchY - thumbCenterY); surfaceControl.setAlpha(.7071f); surfaceControl.setLayer(mService.mDragState.getDragLayerLw()); surfaceControl.setLayerStack(display.getLayerStack()); surfaceControl.show(); } finally { SurfaceControl.closeTransaction(); if (WindowManagerService.SHOW_LIGHT_TRANSACTIONS) Slog.i( WindowManagerService.TAG, "<<< CLOSE TRANSACTION performDrag"); } } return true; // success! } public void reportDropResult(IWindow window, boolean consumed) { IBinder token = window.asBinder(); if (WindowManagerService.DEBUG_DRAG) { Slog.d(WindowManagerService.TAG, "Drop result=" + consumed + " reported by " + token); } synchronized (mService.mWindowMap) { long ident = Binder.clearCallingIdentity(); try { if (mService.mDragState == null) { // Most likely the drop recipient ANRed and we ended the drag // out from under it. Log the issue and move on. Slog.w(WindowManagerService.TAG, "Drop result given but no drag in progress"); return; } if (mService.mDragState.mToken != token) { // We're in a drag, but the wrong window has responded. Slog.w(WindowManagerService.TAG, "Invalid drop-result claim by " + window); throw new IllegalStateException("reportDropResult() by non-recipient"); } // The right window has responded, even if it's no longer around, // so be sure to halt the timeout even if the later WindowState // lookup fails. mService.mH.removeMessages(H.DRAG_END_TIMEOUT, window.asBinder()); WindowState callingWin = mService.windowForClientLocked(null, window, false); if (callingWin == null) { Slog.w(WindowManagerService.TAG, "Bad result-reporting window " + window); return; // !!! TODO: throw here? } mService.mDragState.mDragResult = consumed; mService.mDragState.endDragLw(); } finally { Binder.restoreCallingIdentity(ident); } } } public void dragRecipientEntered(IWindow window) { if (WindowManagerService.DEBUG_DRAG) { Slog.d(WindowManagerService.TAG, "Drag into new candidate view @ " + window.asBinder()); } } public void dragRecipientExited(IWindow window) { if (WindowManagerService.DEBUG_DRAG) { Slog.d(WindowManagerService.TAG, "Drag from old candidate view @ " + window.asBinder()); } } public void setWallpaperPosition(IBinder window, float x, float y, float xStep, float yStep) { synchronized(mService.mWindowMap) { long ident = Binder.clearCallingIdentity(); try { mService.setWindowWallpaperPositionLocked( mService.windowForClientLocked(this, window, true), x, y, xStep, yStep); } finally { Binder.restoreCallingIdentity(ident); } } } public void wallpaperOffsetsComplete(IBinder window) { mService.wallpaperOffsetsComplete(window); } public Bundle sendWallpaperCommand(IBinder window, String action, int x, int y, int z, Bundle extras, boolean sync) { synchronized(mService.mWindowMap) { long ident = Binder.clearCallingIdentity(); try { return mService.sendWindowWallpaperCommandLocked( mService.windowForClientLocked(this, window, true), action, x, y, z, extras, sync); } finally { Binder.restoreCallingIdentity(ident); } } } public void wallpaperCommandComplete(IBinder window, Bundle result) { mService.wallpaperCommandComplete(window, result); } public void setUniverseTransform(IBinder window, float alpha, float offx, float offy, float dsdx, float dtdx, float dsdy, float dtdy) { synchronized(mService.mWindowMap) { long ident = Binder.clearCallingIdentity(); try { mService.setUniverseTransformLocked( mService.windowForClientLocked(this, window, true), alpha, offx, offy, dsdx, dtdx, dsdy, dtdy); } finally { Binder.restoreCallingIdentity(ident); } } } public void onRectangleOnScreenRequested(IBinder token, Rect rectangle, boolean immediate) { synchronized(mService.mWindowMap) { final long identity = Binder.clearCallingIdentity(); try { mService.onRectangleOnScreenRequested(token, rectangle, immediate); } finally { Binder.restoreCallingIdentity(identity); } } } public IWindowId getWindowId(IBinder window) { return mService.getWindowId(window); } void windowAddedLocked() { if (mSurfaceSession == null) { if (WindowManagerService.localLOGV) Slog.v( WindowManagerService.TAG, "First window added to " + this + ", creating SurfaceSession"); mSurfaceSession = new SurfaceSession(); if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i( WindowManagerService.TAG, " NEW SURFACE SESSION " + mSurfaceSession); mService.mSessions.add(this); } mNumWindow++; } void windowRemovedLocked() { mNumWindow--; killSessionLocked(); } void killSessionLocked() { if (mNumWindow <= 0 && mClientDead) { mService.mSessions.remove(this); if (mSurfaceSession != null) { if (WindowManagerService.localLOGV) Slog.v( WindowManagerService.TAG, "Last window removed from " + this + ", destroying " + mSurfaceSession); if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i( WindowManagerService.TAG, " KILL SURFACE SESSION " + mSurfaceSession); try { mSurfaceSession.kill(); } catch (Exception e) { Slog.w(WindowManagerService.TAG, "Exception thrown when killing surface session " + mSurfaceSession + " in session " + this + ": " + e.toString()); } mSurfaceSession = null; } } } void dump(PrintWriter pw, String prefix) { pw.print(prefix); pw.print("mNumWindow="); pw.print(mNumWindow); pw.print(" mClientDead="); pw.print(mClientDead); pw.print(" mSurfaceSession="); pw.println(mSurfaceSession); } @Override public String toString() { return mStringName; } }