/**
* Overrides the display information of a particular logical display. This is used by the window
* manager to control the size and characteristics of the default display. It is expected to apply
* the requested change to the display information synchronously so that applications will
* immediately observe the new state.
*
* @param displayId The logical display id.
* @param info The new data to be stored.
*/
public void setDisplayInfoOverrideFromWindowManager(int displayId, DisplayInfo info) {
synchronized (mSyncRoot) {
LogicalDisplay display = mLogicalDisplays.get(displayId);
if (display != null) {
mTempDisplayInfo.copyFrom(display.getDisplayInfoLocked());
display.setDisplayInfoOverrideFromWindowManagerLocked(info);
if (!mTempDisplayInfo.equals(display.getDisplayInfoLocked())) {
sendDisplayEventLocked(displayId, DisplayManagerGlobal.EVENT_DISPLAY_CHANGED);
scheduleTraversalLocked(false);
}
}
}
}
// Updates all existing logical displays given the current set of display devices.
// Removes invalid logical displays.
// Sends notifications if needed.
private boolean updateLogicalDisplaysLocked() {
boolean changed = false;
for (int i = mLogicalDisplays.size(); i-- > 0; ) {
final int displayId = mLogicalDisplays.keyAt(i);
LogicalDisplay display = mLogicalDisplays.valueAt(i);
mTempDisplayInfo.copyFrom(display.getDisplayInfoLocked());
display.updateLocked(mDisplayDevices);
if (!display.isValidLocked()) {
mLogicalDisplays.removeAt(i);
sendDisplayEventLocked(displayId, DisplayManagerGlobal.EVENT_DISPLAY_REMOVED);
changed = true;
} else if (!mTempDisplayInfo.equals(display.getDisplayInfoLocked())) {
sendDisplayEventLocked(displayId, DisplayManagerGlobal.EVENT_DISPLAY_CHANGED);
changed = true;
}
}
return changed;
}
/**
* Returns information about the specified logical display.
*
* @param displayId The logical display id.
* @return The logical display info, or null if the display does not exist. The returned object
* must be treated as immutable.
*/
@Override // Binder call
public DisplayInfo getDisplayInfo(int displayId) {
synchronized (mSyncRoot) {
LogicalDisplay display = mLogicalDisplays.get(displayId);
if (display != null) {
return display.getDisplayInfoLocked();
}
return null;
}
}
private DisplayInfo getDisplayInfoInternal(int displayId, int callingUid) {
synchronized (mSyncRoot) {
LogicalDisplay display = mLogicalDisplays.get(displayId);
if (display != null) {
DisplayInfo info = display.getDisplayInfoLocked();
if (info.hasAccess(callingUid)) {
return info;
}
}
return null;
}
}
private int[] getDisplayIdsInternal(int callingUid) {
synchronized (mSyncRoot) {
final int count = mLogicalDisplays.size();
int[] displayIds = new int[count];
int n = 0;
for (int i = 0; i < count; i++) {
LogicalDisplay display = mLogicalDisplays.valueAt(i);
DisplayInfo info = display.getDisplayInfoLocked();
if (info.hasAccess(callingUid)) {
displayIds[n++] = mLogicalDisplays.keyAt(i);
}
}
if (n != count) {
displayIds = Arrays.copyOfRange(displayIds, 0, n);
}
return displayIds;
}
}
