aixan/lawnchair
1
0
Fork 0
mirror of https://github.com/LawnchairLauncher/lawnchair.git synced 2026-02-20 03:08:19 +00:00
Code Issues Packages Projects Releases Wiki Activity

Updating the touch proxy logic:

Browse Source 
In draglayer, we always dispatch touch events to child views. If the
touch originated from gesture area, when we dont route it through touch
controllers.
The proxy events are only send to touch controller. If any controller consumes
the event, then we cancel the view touch (pilferPointers)

This allows the controllers to work outside the dragView area, and prevents normal
view interaction when there is a window on top (like keyboard) while keeping our
activity focused

Bug: 131088901
Bug: 130618737
Change-Id: If033dde3a0f9cb6a6e449c9586c1fa050af5bdcb
This commit is contained in:
Sunny Goyal
2019-04-25 18:04:41 -07:00
parent efe8475093
commit bfaa9760dd
7 changed files with 153 additions and 184 deletions
Download Patch File Download Diff File Expand all files Collapse all files

150
src/com/android/launcher3/views/BaseDragLayer.java
View File

@@ -22,13 +22,19 @@ import static android.view.MotionEvent.ACTION_UP;
import static com.android.launcher3.Utilities.SINGLE_FRAME_MS;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Insets;
import android.graphics.Rect;
import android.graphics.RectF;
import android.os.Build;
import android.util.AttributeSet;
import android.util.Property;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewDebug;
import android.view.ViewGroup;
import android.view.WindowInsets;
import android.view.accessibility.AccessibilityEvent;
import android.widget.FrameLayout;
@@ -74,18 +80,32 @@ public abstract class BaseDragLayer<T extends Context & ActivityContext>
}
};
// Touch is being dispatched through the normal view dispatch system
private static final int TOUCH_DISPATCHING_VIEW = 1 << 0;
// Touch is being dispatched through the normal view dispatch system, and started at the
// system gesture region
private static final int TOUCH_DISPATCHING_GESTURE = 1 << 1;
// Touch is being dispatched through a proxy from InputMonitor
private static final int TOUCH_DISPATCHING_PROXY = 1 << 2;
protected final int[] mTmpXY = new int[2];
protected final Rect mHitRect = new Rect();
@ViewDebug.ExportedProperty(category = "launcher")
private final RectF mSystemGestureRegion = new RectF();
private int mTouchDispatchState = 0;
protected final T mActivity;
private final MultiValueAlpha mMultiValueAlpha;
// All the touch controllers for the view
protected TouchController[] mControllers;
// Touch controller which is currently active for the normal view dispatch
protected TouchController mActiveController;
private TouchCompleteListener mTouchCompleteListener;
// Touch controller which is being used for the proxy events
protected TouchController mProxyTouchController;
// Object controlling the current touch interaction
private Object mCurrentTouchOwner;
private TouchCompleteListener mTouchCompleteListener;
public BaseDragLayer(Context context, AttributeSet attrs, int alphaChannelCount) {
super(context, attrs);
@@ -113,30 +133,36 @@ public abstract class BaseDragLayer<T extends Context & ActivityContext>
return findActiveController(ev);
}
private TouchController findControllerToHandleTouch(MotionEvent ev) {
AbstractFloatingView topView = AbstractFloatingView.getTopOpenView(mActivity);
if (topView != null && topView.onControllerInterceptTouchEvent(ev)) {
return topView;
}
for (TouchController controller : mControllers) {
if (controller.onControllerInterceptTouchEvent(ev)) {
return controller;
}
}
return null;
}
protected boolean findActiveController(MotionEvent ev) {
if (com.android.launcher3.TestProtocol.sDebugTracing) {
android.util.Log.d(com.android.launcher3.TestProtocol.NO_DRAG_TAG,
"mActiveController = null");
}
mActiveController = null;
if ((mTouchDispatchState & (TOUCH_DISPATCHING_GESTURE | TOUCH_DISPATCHING_PROXY)) == 0) {
// Only look for controllers if we are not dispatching from gesture area and proxy is
// not active
mActiveController = findControllerToHandleTouch(ev);
AbstractFloatingView topView = AbstractFloatingView.getTopOpenView(mActivity);
if (topView != null && topView.onControllerInterceptTouchEvent(ev)) {
if (com.android.launcher3.TestProtocol.sDebugTracing) {
android.util.Log.d(com.android.launcher3.TestProtocol.NO_DRAG_TAG,
"setting controller1: " + topView.getClass().getSimpleName());
}
mActiveController = topView;
return true;
}
for (TouchController controller : mControllers) {
if (controller.onControllerInterceptTouchEvent(ev)) {
if (mActiveController != null) {
if (com.android.launcher3.TestProtocol.sDebugTracing) {
android.util.Log.d(com.android.launcher3.TestProtocol.NO_DRAG_TAG,
"setting controller1: " + controller.getClass().getSimpleName());
"setting controller1: " + mActiveController.getClass().getSimpleName());
}
mActiveController = controller;
return true;
}
}
@@ -223,39 +249,74 @@ public abstract class BaseDragLayer<T extends Context & ActivityContext>
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
return dispatchTouchEvent(this, ev);
}
switch (ev.getAction()) {
case ACTION_DOWN: {
float x = ev.getX();
float y = ev.getY();
mTouchDispatchState |= TOUCH_DISPATCHING_VIEW;
public boolean dispatchTouchEvent(Object caller, MotionEvent ev) {
return verifyTouchDispatch(caller, ev) && super.dispatchTouchEvent(ev);
if ((y < mSystemGestureRegion.top
|| x < mSystemGestureRegion.left
|| x > (getWidth() - mSystemGestureRegion.right)
|| y > (getHeight() - mSystemGestureRegion.bottom))) {
mTouchDispatchState |= TOUCH_DISPATCHING_GESTURE;
} else {
mTouchDispatchState &= ~TOUCH_DISPATCHING_GESTURE;
}
break;
}
case ACTION_CANCEL:
case ACTION_UP:
mTouchDispatchState &= ~TOUCH_DISPATCHING_GESTURE;
mTouchDispatchState &= ~TOUCH_DISPATCHING_VIEW;
break;
}
super.dispatchTouchEvent(ev);
// We want to get all events so that mTouchDispatchSource is maintained properly
return true;
}
/**
* Returns true if the {@param caller} is allowed to dispatch {@param ev} on this view,
* false otherwise.
* Called before we are about to receive proxy events.
*
* @return false if we can't handle proxy at this time
*/
private boolean verifyTouchDispatch(Object caller, MotionEvent ev) {
int action = ev.getAction();
if (action == ACTION_DOWN) {
if (mCurrentTouchOwner != null) {
// Another touch in progress.
ev.setAction(ACTION_CANCEL);
super.dispatchTouchEvent(ev);
ev.setAction(action);
}
mCurrentTouchOwner = caller;
return true;
}
if (mCurrentTouchOwner != caller) {
// Someone else is controlling the touch
public boolean prepareProxyEventStarting() {
mProxyTouchController = null;
if ((mTouchDispatchState & TOUCH_DISPATCHING_VIEW) != 0 && mActiveController != null) {
// We are already dispatching using view system and have an active controller, we can't
// handle another controller.
// This flag was already cleared in proxy ACTION_UP or ACTION_CANCEL. Added here just
// to be safe
mTouchDispatchState &= ~TOUCH_DISPATCHING_PROXY;
return false;
}
if (action == ACTION_UP || action == ACTION_CANCEL) {
mCurrentTouchOwner = null;
}
mTouchDispatchState |= TOUCH_DISPATCHING_PROXY;
return true;
}
/**
* Proxies the touch events to the gesture handlers
*/
public boolean proxyTouchEvent(MotionEvent ev) {
boolean handled;
if (mProxyTouchController != null) {
handled = mProxyTouchController.onControllerTouchEvent(ev);
} else {
mProxyTouchController = findControllerToHandleTouch(ev);
handled = mProxyTouchController != null;
}
int action = ev.getAction();
if (action == ACTION_UP || action == ACTION_CANCEL) {
mProxyTouchController = null;
mTouchDispatchState &= ~TOUCH_DISPATCHING_PROXY;
}
return handled;
}
/**
* Determine the rect of the descendant in this DragLayer's coordinates
*
@@ -423,4 +484,13 @@ public abstract class BaseDragLayer<T extends Context & ActivityContext>
}
}
}
@TargetApi(Build.VERSION_CODES.Q)
public void updateTouchExcludeRegion(WindowInsets insets) {
if (Utilities.ATLEAST_Q) {
Insets gestureInsets = insets.getMandatorySystemGestureInsets();
mSystemGestureRegion.set(gestureInsets.left, gestureInsets.top,
gestureInsets.right, gestureInsets.bottom);
}
}
}