Better compat mode part one: start scaling windows.

First step of improving app screen size compatibility mode.  When
running in compat mode, an application's windows are scaled up on
the screen rather than being small with 1:1 pixels.

Currently we scale the application to fill the entire screen, so
don't use an even pixel scaling.  Though this may have some
negative impact on the appearance (it looks okay to me), it has a
big benefit of allowing us to now treat these apps as normal
full-screens apps and do the normal transition animations as you
move in and out and around in them.

This introduces fun stuff in the input system to take care of
modifying pointer coordinates to account for the app window
surface scaling.  The input dispatcher is told about the scale
that is being applied to each window and, when there is one,
adjusts pointer events appropriately as they are being sent
to the transport.

Also modified is CompatibilityInfo, which has been greatly
simplified to not be so insane and incomprehendible.  It is
now simple -- when constructed it determines if the given app
is compatible with the current screen size and density, and
that is that.

There are new APIs on ActivityManagerService to put applications
that we would traditionally consider compatible with larger screens
in compatibility mode.  This is the start of a facility to have
a UI affordance for a user to switch apps in and out of
compatibility.

To test switching of modes, there is a new variation of the "am"
command to do this: am screen-compat [on|off] [package]

This mode switching has the fundamentals of restarting activities
when it is changed, though the state still needs to be persisted
and the overall mode switch cleaned up.

For the few small apps I have tested, things mostly seem to be
working well.  I know of one problem with the text selection
handles being drawn at the wrong position because at some point
the window offset is being scaled incorrectly.  There are
probably other similar issues around the interaction between
two windows because the different window coordinate spaces are
done in a hacky way instead of being formally integrated into
the window manager layout process.

Change-Id: Ie038e3746b448135117bd860859d74e360938557

1 files changed, 15 insertions, 8 deletions

diff --git a/core/java/android/app/IApplicationThread.java b/core/java/android/app/IApplicationThread.java
index 55177a90592a..93a8ff33340f 100644
--- a/core/java/android/app/IApplicationThread.java
+++ b/core/java/android/app/IApplicationThread.java
@@ -23,6 +23,7 @@ import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.ProviderInfo;
 import android.content.pm.ServiceInfo;
+import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.os.Debug;
@@ -52,7 +53,8 @@ public interface IApplicationThread extends IInterface {
     void scheduleResumeActivity(IBinder token, boolean isForward) throws RemoteException;
     void scheduleSendResult(IBinder token, List<ResultInfo> results) throws RemoteException;
     void scheduleLaunchActivity(Intent intent, IBinder token, int ident,
-            ActivityInfo info, Bundle state, List<ResultInfo> pendingResults,
+            ActivityInfo info, CompatibilityInfo compatInfo, Bundle state,
+            List<ResultInfo> pendingResults,
     		List<Intent> pendingNewIntents, boolean notResumed, boolean isForward)
     		throws RemoteException;
     void scheduleRelaunchActivity(IBinder token, List<ResultInfo> pendingResults,
@@ -61,14 +63,17 @@ public interface IApplicationThread extends IInterface {
     void scheduleNewIntent(List<Intent> intent, IBinder token) throws RemoteException;
     void scheduleDestroyActivity(IBinder token, boolean finished,
             int configChanges) throws RemoteException;
-    void scheduleReceiver(Intent intent, ActivityInfo info, int resultCode,
-            String data, Bundle extras, boolean sync) throws RemoteException;
+    void scheduleReceiver(Intent intent, ActivityInfo info, CompatibilityInfo compatInfo,
+            int resultCode, String data, Bundle extras, boolean sync) throws RemoteException;
     static final int BACKUP_MODE_INCREMENTAL = 0;
     static final int BACKUP_MODE_FULL = 1;
     static final int BACKUP_MODE_RESTORE = 2;
-    void scheduleCreateBackupAgent(ApplicationInfo app, int backupMode) throws RemoteException;
-    void scheduleDestroyBackupAgent(ApplicationInfo app) throws RemoteException;
-    void scheduleCreateService(IBinder token, ServiceInfo info) throws RemoteException;
+    void scheduleCreateBackupAgent(ApplicationInfo app, CompatibilityInfo compatInfo,
+            int backupMode) throws RemoteException;
+    void scheduleDestroyBackupAgent(ApplicationInfo app, CompatibilityInfo compatInfo)
+            throws RemoteException;
+    void scheduleCreateService(IBinder token, ServiceInfo info,
+            CompatibilityInfo compatInfo) throws RemoteException;
     void scheduleBindService(IBinder token,
             Intent intent, boolean rebind) throws RemoteException;
     void scheduleUnbindService(IBinder token,
@@ -82,7 +87,7 @@ public interface IApplicationThread extends IInterface {
     void bindApplication(String packageName, ApplicationInfo info, List<ProviderInfo> providers,
             ComponentName testName, String profileName, Bundle testArguments, 
             IInstrumentationWatcher testWatcher, int debugMode, boolean restrictedBackupMode,
-            Configuration config, Map<String, IBinder> services,
+            Configuration config, CompatibilityInfo compatInfo, Map<String, IBinder> services,
             Bundle coreSettings) throws RemoteException;
     void scheduleExit() throws RemoteException;
     void scheduleSuicide() throws RemoteException;
@@ -112,6 +117,7 @@ public interface IApplicationThread extends IInterface {
     void dumpActivity(FileDescriptor fd, IBinder servicetoken, String prefix, String[] args)
             throws RemoteException;
     void setCoreSettings(Bundle coreSettings) throws RemoteException;
+    void updatePackageCompatibilityInfo(String pkg, CompatibilityInfo info) throws RemoteException;
 
     String descriptor = "android.app.IApplicationThread";
 
@@ -153,5 +159,6 @@ public interface IApplicationThread extends IInterface {
     int DUMP_ACTIVITY_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+36;
     int CLEAR_DNS_CACHE_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+37;
     int SET_HTTP_PROXY_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+38;
-    int SET_CORE_SETTINGS = IBinder.FIRST_CALL_TRANSACTION+39;
+    int SET_CORE_SETTINGS_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+39;
+    int UPDATE_PACKAGE_COMPATIBILITY_INFO_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+40;
 }