// 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; }
// Adds a new logical display based on the given display device. // Sends notifications if needed. private void addLogicalDisplayLocked(DisplayDevice device) { DisplayDeviceInfo deviceInfo = device.getDisplayDeviceInfoLocked(); boolean isDefault = (deviceInfo.flags & DisplayDeviceInfo.FLAG_DEFAULT_DISPLAY) != 0; if (isDefault && mLogicalDisplays.get(Display.DEFAULT_DISPLAY) != null) { Slog.w(TAG, "Ignoring attempt to add a second default display: " + deviceInfo); isDefault = false; } if (!isDefault && mSingleDisplayDemoMode) { Slog.i( TAG, "Not creating a logical display for a secondary display " + " because single display demo mode is enabled: " + deviceInfo); return; } final int displayId = assignDisplayIdLocked(isDefault); final int layerStack = assignLayerStackLocked(displayId); LogicalDisplay display = new LogicalDisplay(displayId, layerStack, device); display.updateLocked(mDisplayDevices); if (!display.isValidLocked()) { // This should never happen currently. Slog.w( TAG, "Ignoring display device because the logical display " + "created from it was not considered valid: " + deviceInfo); return; } mLogicalDisplays.put(displayId, display); // Wake up waitForDefaultDisplay. if (isDefault) { mSyncRoot.notifyAll(); } sendDisplayEventLocked(displayId, DisplayManagerGlobal.EVENT_DISPLAY_ADDED); }