Make process level rotated config and display metrics consistent
The application may get Resources instance from Resources.getSystem() and context.getApplicationContext().getResources(). Since fixed rotation is introduced that allows an activity to start in a different rotation than the current display, when using getConfiguration() and getDisplayMetrics() of these Resources instances, the orientation and metrics need to be the same as current display is rotated. Otherwise the app may show unexpected UI layout. Although it is not recommended to use global resources/config for activity. One of the goal of fixed rotation transform is to simulate the app is started in a rotated environment, so this CL makes the configuration and display metrics of system resources are consistent with application and activity for compatibility. About WindowProcessController and ActivityStackSupervisor: The process configuration passed to LaunchActivityItem may be associated from activity. if the sequence number of configuration is overridden by activity, the configuration may be ignored when launching the activity because the sequence number isn't larger than the previous process configuration. Although there will be a ConfigurationChangeItem later to update correct state, the app may get the intermediate state with old configuration and metrics. About ResourcesManager and DisplayAdjustments: There are 2 new fields appWidth and appHeight added to DisplayAdjustments#FixedRotationAdjustments because the display metrics from Resources.getSystem() is independent from activity configuration. Only window manager knows the rotated size, so the values need to send to client and then ResourcesManager takes the adjustment to change the global display metrics. About WindowToken: When fixed rotation is applied on the token, send the FixedRotationAdjustmentsItem first so the later configuration change can pick the adjustment at ActivityThread. And because the registration of activity configuration only occurs on add/remove activity, if it is only switching to another existing activity in different orientation, the process configuration still needs to be updated. About ActivityThread: The code flow for a rotated activity (DA = display adjustments): - Launch new activity handleLaunchActivity: override app DA handleConfigurationChanged: adjust global display metrics by DA performLaunchActivity createBaseContextForActivity: override activity DA - Resume existing activity handleFixedRotationAdjustments: override app and activity DA handleConfigurationChanged: adjust global display metrics by DA handleResumeActivity Also some minor corrections: - Set missing rotated max bounds. - Fix wrong display metrics adjustment that xdpi and ydpi should not be swapped because they are physical attributes. Bug: 167564038 Test: atest DisplayAdjustmentsTests AppConfigurationTests#testRotatedInfoWithFixedRotationTransform WindowProcessControllerTests#testProcessLevelConfiguration DisplayContenTests#testApplyTopFixedRotationTransform Change-Id: I60bedc7e09f54683d5e857ccc51402d5d144cd9e
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