Implement pointer capture API
When in pointer capture mode, mouse pointer disappears and
further mouse events are dispatched to the focused view
in the window which has requested capture.
The captured events have the source SOURCE_MOUSE_RELATIVE
belonging to SOURCE_CLASS_TRACKBALL. They are
dispatched through dispatchCapturedPointerEvent /
onCapturedPointerEvent. There is also a new listener.
Pointer capture mode may only be granted to a currently
focused window, and will be canceled upon a window focus change.
Test: cts-tradefed ... --test android.view.cts.PointerCaptureTest
Bug: 30897034
Change-Id: I6e5934aa415ac2b6dda1cee173d0f23e5021af84
diff --git a/services/core/java/com/android/server/input/InputManagerService.java b/services/core/java/com/android/server/input/InputManagerService.java
index fbb39384..3793b91 100644
--- a/services/core/java/com/android/server/input/InputManagerService.java
+++ b/services/core/java/com/android/server/input/InputManagerService.java
@@ -84,6 +84,7 @@
import android.util.Xml;
import android.view.IInputFilter;
import android.view.IInputFilterHost;
+import android.view.IWindow;
import android.view.InputChannel;
import android.view.InputDevice;
import android.view.InputEvent;
@@ -180,6 +181,9 @@
IInputFilter mInputFilter; // guarded by mInputFilterLock
InputFilterHost mInputFilterHost; // guarded by mInputFilterLock
+ private IWindow mFocusedWindow;
+ private boolean mFocusedWindowHasCapture;
+
private static native long nativeInit(InputManagerService service,
Context context, MessageQueue messageQueue);
private static native void nativeStart(long ptr);
@@ -226,6 +230,7 @@
private static native void nativeSetPointerIconType(long ptr, int iconId);
private static native void nativeReloadPointerIcons(long ptr);
private static native void nativeSetCustomPointerIcon(long ptr, PointerIcon icon);
+ private static native void nativeSetPointerCapture(long ptr, boolean detached);
// Input event injection constants defined in InputDispatcher.h.
private static final int INPUT_EVENT_INJECTION_SUCCEEDED = 0;
@@ -1503,7 +1508,16 @@
}
}
- public void setInputWindows(InputWindowHandle[] windowHandles) {
+ public void setInputWindows(InputWindowHandle[] windowHandles,
+ InputWindowHandle focusedWindowHandle) {
+ final IWindow newFocusedWindow =
+ focusedWindowHandle != null ? focusedWindowHandle.clientWindow : null;
+ if (mFocusedWindow != newFocusedWindow) {
+ mFocusedWindow = newFocusedWindow;
+ if (mFocusedWindowHasCapture) {
+ setPointerCapture(false);
+ }
+ }
nativeSetInputWindows(mPtr, windowHandles);
}
@@ -1511,6 +1525,30 @@
nativeSetFocusedApplication(mPtr, application);
}
+ @Override
+ public void requestPointerCapture(IBinder windowToken, boolean enabled) {
+ if (mFocusedWindow == null || mFocusedWindow.asBinder() != windowToken) {
+ Slog.e(TAG, "requestPointerCapture called for a window that has no focus: "
+ + windowToken);
+ return;
+ }
+ if (mFocusedWindowHasCapture == enabled) {
+ Slog.i(TAG, "requestPointerCapture: already " + (enabled ? "enabled" : "disabled"));
+ return;
+ }
+ setPointerCapture(enabled);
+ try {
+ mFocusedWindow.dispatchPointerCaptureChanged(enabled);
+ } catch (RemoteException ex) {
+ /* ignore */
+ }
+ }
+
+ private void setPointerCapture(boolean enabled) {
+ mFocusedWindowHasCapture = enabled;
+ nativeSetPointerCapture(mPtr, enabled);
+ }
+
public void setInputDispatchMode(boolean enabled, boolean frozen) {
nativeSetInputDispatchMode(mPtr, enabled, frozen);
}
diff --git a/services/core/java/com/android/server/input/InputWindowHandle.java b/services/core/java/com/android/server/input/InputWindowHandle.java
index eb3581a..3d6f7ad 100644
--- a/services/core/java/com/android/server/input/InputWindowHandle.java
+++ b/services/core/java/com/android/server/input/InputWindowHandle.java
@@ -18,6 +18,7 @@
import android.graphics.Region;
import android.view.InputChannel;
+import android.view.IWindow;
/**
* Functions as a handle for a window that can receive input.
@@ -36,6 +37,9 @@
// The window manager's window state.
public final Object windowState;
+ // The client window.
+ public final IWindow clientWindow;
+
// The input channel associated with the window.
public InputChannel inputChannel;
@@ -93,9 +97,10 @@
private native void nativeDispose();
public InputWindowHandle(InputApplicationHandle inputApplicationHandle,
- Object windowState, int displayId) {
+ Object windowState, IWindow clientWindow, int displayId) {
this.inputApplicationHandle = inputApplicationHandle;
this.windowState = windowState;
+ this.clientWindow = clientWindow;
this.displayId = displayId;
}
diff --git a/services/core/java/com/android/server/wm/DragState.java b/services/core/java/com/android/server/wm/DragState.java
index 36520a9..1ae987f 100644
--- a/services/core/java/com/android/server/wm/DragState.java
+++ b/services/core/java/com/android/server/wm/DragState.java
@@ -148,7 +148,7 @@
mDragApplicationHandle.dispatchingTimeoutNanos =
WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
- mDragWindowHandle = new InputWindowHandle(mDragApplicationHandle, null,
+ mDragWindowHandle = new InputWindowHandle(mDragApplicationHandle, null, null,
display.getDisplayId());
mDragWindowHandle.name = "drag";
mDragWindowHandle.inputChannel = mServerChannel;
diff --git a/services/core/java/com/android/server/wm/InputConsumerImpl.java b/services/core/java/com/android/server/wm/InputConsumerImpl.java
index 24783bc..b92bfb9 100644
--- a/services/core/java/com/android/server/wm/InputConsumerImpl.java
+++ b/services/core/java/com/android/server/wm/InputConsumerImpl.java
@@ -48,7 +48,8 @@
mApplicationHandle.dispatchingTimeoutNanos =
WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
- mWindowHandle = new InputWindowHandle(mApplicationHandle, null, Display.DEFAULT_DISPLAY);
+ mWindowHandle = new InputWindowHandle(mApplicationHandle, null, null,
+ Display.DEFAULT_DISPLAY);
mWindowHandle.name = name;
mWindowHandle.inputChannel = mServerChannel;
mWindowHandle.layoutParamsType = WindowManager.LayoutParams.TYPE_INPUT_CONSUMER;
diff --git a/services/core/java/com/android/server/wm/InputMonitor.java b/services/core/java/com/android/server/wm/InputMonitor.java
index f754775..e039583 100644
--- a/services/core/java/com/android/server/wm/InputMonitor.java
+++ b/services/core/java/com/android/server/wm/InputMonitor.java
@@ -77,6 +77,8 @@
// Array of window handles to provide to the input dispatcher.
private InputWindowHandle[] mInputWindowHandles;
private int mInputWindowHandleCount;
+ private InputWindowHandle mFocusedInputWindowHandle;
+
private boolean mAddInputConsumerHandle;
private boolean mAddPipInputConsumerHandle;
private boolean mAddWallpaperInputConsumerHandle;
@@ -327,12 +329,16 @@
+ child + ", " + inputWindowHandle);
}
addInputWindowHandle(inputWindowHandle);
+ if (hasFocus) {
+ mFocusedInputWindowHandle = inputWindowHandle;
+ }
}
private void clearInputWindowHandlesLw() {
while (mInputWindowHandleCount != 0) {
mInputWindowHandles[--mInputWindowHandleCount] = null;
}
+ mFocusedInputWindowHandle = null;
}
void setUpdateInputWindowsNeededLw() {
@@ -609,7 +615,7 @@
}
// Send windows to native code.
- mService.mInputManager.setInputWindows(mInputWindowHandles);
+ mService.mInputManager.setInputWindows(mInputWindowHandles, mFocusedInputWindowHandle);
clearInputWindowHandlesLw();
}
diff --git a/services/core/java/com/android/server/wm/TaskPositioner.java b/services/core/java/com/android/server/wm/TaskPositioner.java
index 7bc577e..90106a9 100644
--- a/services/core/java/com/android/server/wm/TaskPositioner.java
+++ b/services/core/java/com/android/server/wm/TaskPositioner.java
@@ -269,7 +269,7 @@
mDragApplicationHandle.dispatchingTimeoutNanos =
WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
- mDragWindowHandle = new InputWindowHandle(mDragApplicationHandle, null,
+ mDragWindowHandle = new InputWindowHandle(mDragApplicationHandle, null, null,
mDisplay.getDisplayId());
mDragWindowHandle.name = TAG;
mDragWindowHandle.inputChannel = mServerChannel;
diff --git a/services/core/java/com/android/server/wm/WindowState.java b/services/core/java/com/android/server/wm/WindowState.java
index 5e458d4..724aab1 100644
--- a/services/core/java/com/android/server/wm/WindowState.java
+++ b/services/core/java/com/android/server/wm/WindowState.java
@@ -657,7 +657,8 @@
mYOffset = 0;
mLayer = 0;
mInputWindowHandle = new InputWindowHandle(
- mAppToken != null ? mAppToken.mInputApplicationHandle : null, this, getDisplayId());
+ mAppToken != null ? mAppToken.mInputApplicationHandle : null, this, c,
+ getDisplayId());
}
void attach() {