private void setContext(android.view.MotionEvent curr)
{
if (mCurrEvent != null)
{
mCurrEvent.recycle();
}
mCurrEvent = android.view.MotionEvent.obtain(curr);
mCurrLen = -1;
mPrevLen = -1;
mScaleFactor = -1;
android.view.MotionEvent prev = mPrevEvent;
int prevIndex0 = prev.findPointerIndex(mActiveId0);
int prevIndex1 = prev.findPointerIndex(mActiveId1);
int currIndex0 = curr.findPointerIndex(mActiveId0);
int currIndex1 = curr.findPointerIndex(mActiveId1);
if (prevIndex0 < 0 || prevIndex1 < 0 || currIndex0 < 0 || currIndex1 < 0)
{
mInvalidGesture = true;
android.util.Log.e(TAG, "Invalid MotionEvent stream detected.", new System.Exception
());
if (mGestureInProgress)
{
mListener.onScaleEnd(this);
}
return;
}
float px0 = prev.getX(prevIndex0);
float py0 = prev.getY(prevIndex0);
float px1 = prev.getX(prevIndex1);
float py1 = prev.getY(prevIndex1);
float cx0 = curr.getX(currIndex0);
float cy0 = curr.getY(currIndex0);
float cx1 = curr.getX(currIndex1);
float cy1 = curr.getY(currIndex1);
float pvx = px1 - px0;
float pvy = py1 - py0;
float cvx = cx1 - cx0;
float cvy = cy1 - cy0;
mPrevFingerDiffX = pvx;
mPrevFingerDiffY = pvy;
mCurrFingerDiffX = cvx;
mCurrFingerDiffY = cvy;
mFocusX = cx0 + cvx * 0.5f;
mFocusY = cy0 + cvy * 0.5f;
mTimeDelta = curr.getEventTime() - prev.getEventTime();
mCurrPressure = curr.getPressure(currIndex0) + curr.getPressure(currIndex1);
mPrevPressure = prev.getPressure(prevIndex0) + prev.getPressure(prevIndex1);
}
/// <summary>MotionEvent has no getRawX(int) method; simulate it pending future API approval.
/// </summary>
/// <remarks>MotionEvent has no getRawX(int) method; simulate it pending future API approval.
/// </remarks>
private static float getRawX(android.view.MotionEvent @event, int pointerIndex)
{
if (pointerIndex < 0)
{
return(float.MinValue);
}
if (pointerIndex == 0)
{
return(@event.getRawX());
}
float offset = @event.getRawX() - @event.getX();
return(@event.getX(pointerIndex) + offset);
}
internal virtual bool onInterceptTouchEvent(android.view.MotionEvent ev)
{
switch (ev.getActionMasked())
{
case android.view.MotionEvent.ACTION_DOWN:
{
if (mState > STATE_NONE && isPointInside(ev.getX(), ev.getY()))
{
if (!mList.isInScrollingContainer())
{
beginDrag();
return(true);
}
mInitialTouchY = ev.getY();
startPendingDrag();
}
break;
}
case android.view.MotionEvent.ACTION_UP:
case android.view.MotionEvent.ACTION_CANCEL:
{
cancelPendingDrag();
break;
}
}
return(false);
}
private void trackTouchEvent(android.view.MotionEvent @event)
{
int width = getWidth();
int available = width - mPaddingLeft - mPaddingRight;
int x = (int)@event.getX();
float scale;
float progress = 0;
if (x < mPaddingLeft)
{
scale = 0.0f;
}
else
{
if (x > width - mPaddingRight)
{
scale = 1.0f;
}
else
{
scale = (float)(x - mPaddingLeft) / (float)available;
progress = mTouchProgressOffset;
}
}
int max = getMax();
progress += scale * max;
setProgress((int)progress, true);
}
public override bool dispatchTouchEvent(android.view.MotionEvent ev)
{
if (mDefaultTouchRecepient == null)
{
return(base.dispatchTouchEvent(ev));
}
if (base.dispatchTouchEvent(ev))
{
return(true);
}
mTempRect.set(0, 0, 0, 0);
offsetRectIntoDescendantCoords(mDefaultTouchRecepient, mTempRect);
ev.setLocation(ev.getX() + mTempRect.left, ev.getY() + mTempRect.top);
return(mDefaultTouchRecepient.dispatchTouchEvent(ev));
}
private bool isConsideredDoubleTap(android.view.MotionEvent firstDown, android.view.MotionEvent
firstUp, android.view.MotionEvent secondDown)
{
if (!mAlwaysInBiggerTapRegion)
{
return(false);
}
if (secondDown.getEventTime() - firstUp.getEventTime() > DOUBLE_TAP_TIMEOUT)
{
return(false);
}
int deltaX = (int)firstDown.getX() - (int)secondDown.getX();
int deltaY = (int)firstDown.getY() - (int)secondDown.getY();
return(deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare);
}
public virtual bool onTouch(android.view.View v, android.view.MotionEvent @event)
{
int action = @event.getAction();
if (@event.getPointerCount() > 1)
{
// ZoomButtonsController doesn't handle mutitouch. Give up control.
return(false);
}
if (mReleaseTouchListenerOnUp)
{
// The controls were dismissed but we need to throw away all events until the up
if (action == android.view.MotionEvent.ACTION_UP || action == android.view.MotionEvent
.ACTION_CANCEL)
{
mOwnerView.setOnTouchListener(null);
setTouchTargetView(null);
mReleaseTouchListenerOnUp = false;
}
// Eat this event
return(true);
}
dismissControlsDelayed(ZOOM_CONTROLS_TIMEOUT);
android.view.View targetView = mTouchTargetView;
switch (action)
{
case android.view.MotionEvent.ACTION_DOWN:
{
targetView = findViewForTouch((int)@event.getRawX(), (int)@event.getRawY());
setTouchTargetView(targetView);
break;
}
case android.view.MotionEvent.ACTION_UP:
case android.view.MotionEvent.ACTION_CANCEL:
{
setTouchTargetView(null);
break;
}
}
if (targetView != null)
{
// The upperleft corner of the target view in raw coordinates
int targetViewRawX = mContainerRawLocation[0] + mTouchTargetWindowLocation[0];
int targetViewRawY = mContainerRawLocation[1] + mTouchTargetWindowLocation[1];
android.view.MotionEvent containerEvent = android.view.MotionEvent.obtain(@event);
// Convert the motion event into the target view's coordinates (from
// owner view's coordinates)
containerEvent.offsetLocation(mOwnerViewRawLocation[0] - targetViewRawX, mOwnerViewRawLocation
[1] - targetViewRawY);
// These are floats because we need to potentially offset away this exact amount
float containerX = containerEvent.getX();
float containerY = containerEvent.getY();
if (containerX < 0 && containerX > -ZOOM_CONTROLS_TOUCH_PADDING)
{
containerEvent.offsetLocation(-containerX, 0);
}
if (containerY < 0 && containerY > -ZOOM_CONTROLS_TOUCH_PADDING)
{
containerEvent.offsetLocation(0, -containerY);
}
bool retValue = targetView.dispatchTouchEvent(containerEvent);
containerEvent.recycle();
return(retValue);
}
else
{
return(false);
}
}
public virtual bool onTouchEvent(android.view.MotionEvent @event)
{
if (mInputEventConsistencyVerifier != null)
{
mInputEventConsistencyVerifier.onTouchEvent(@event, 0);
}
int action = @event.getActionMasked();
if (action == android.view.MotionEvent.ACTION_DOWN)
{
reset();
}
// Start fresh
bool handled = true;
if (mInvalidGesture)
{
handled = false;
}
else
{
if (!mGestureInProgress)
{
switch (action)
{
case android.view.MotionEvent.ACTION_DOWN:
{
mActiveId0 = @event.getPointerId(0);
mActive0MostRecent = true;
break;
}
case android.view.MotionEvent.ACTION_UP:
{
reset();
break;
}
case android.view.MotionEvent.ACTION_POINTER_DOWN:
{
// We have a new multi-finger gesture
// as orientation can change, query the metrics in touch down
android.util.DisplayMetrics metrics = mContext.getResources().getDisplayMetrics();
mRightSlopEdge = metrics.widthPixels - mEdgeSlop;
mBottomSlopEdge = metrics.heightPixels - mEdgeSlop;
if (mPrevEvent != null)
{
mPrevEvent.recycle();
}
mPrevEvent = android.view.MotionEvent.obtain(@event);
mTimeDelta = 0;
int index1 = @event.getActionIndex();
int index0 = @event.findPointerIndex(mActiveId0);
mActiveId1 = @event.getPointerId(index1);
if (index0 < 0 || index0 == index1)
{
// Probably someone sending us a broken event stream.
index0 = findNewActiveIndex(@event, index0 == index1 ? -1 : mActiveId1, index0);
mActiveId0 = @event.getPointerId(index0);
}
mActive0MostRecent = false;
setContext(@event);
// Check if we have a sloppy gesture. If so, delay
// the beginning of the gesture until we're sure that's
// what the user wanted. Sloppy gestures can happen if the
// edge of the user's hand is touching the screen, for example.
float edgeSlop = mEdgeSlop;
float rightSlop = mRightSlopEdge;
float bottomSlop = mBottomSlopEdge;
float x0 = getRawX(@event, index0);
float y0 = getRawY(@event, index0);
float x1 = getRawX(@event, index1);
float y1 = getRawY(@event, index1);
bool p0sloppy = x0 <edgeSlop || y0 <edgeSlop || x0> rightSlop || y0> bottomSlop;
bool p1sloppy = x1 <edgeSlop || y1 <edgeSlop || x1> rightSlop || y1> bottomSlop;
if (p0sloppy && p1sloppy)
{
mFocusX = -1;
mFocusY = -1;
mSloppyGesture = true;
}
else
{
if (p0sloppy)
{
mFocusX = @event.getX(index1);
mFocusY = @event.getY(index1);
mSloppyGesture = true;
}
else
{
if (p1sloppy)
{
mFocusX = @event.getX(index0);
mFocusY = @event.getY(index0);
mSloppyGesture = true;
}
else
{
mSloppyGesture = false;
mGestureInProgress = mListener.onScaleBegin(this);
}
}
}
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
if (mSloppyGesture)
{
// Initiate sloppy gestures if we've moved outside of the slop area.
float edgeSlop = mEdgeSlop;
float rightSlop = mRightSlopEdge;
float bottomSlop = mBottomSlopEdge;
int index0 = @event.findPointerIndex(mActiveId0);
int index1 = @event.findPointerIndex(mActiveId1);
float x0 = getRawX(@event, index0);
float y0 = getRawY(@event, index0);
float x1 = getRawX(@event, index1);
float y1 = getRawY(@event, index1);
bool p0sloppy = x0 <edgeSlop || y0 <edgeSlop || x0> rightSlop || y0> bottomSlop;
bool p1sloppy = x1 <edgeSlop || y1 <edgeSlop || x1> rightSlop || y1> bottomSlop;
if (p0sloppy)
{
// Do we have a different pointer that isn't sloppy?
int index = findNewActiveIndex(@event, mActiveId1, index0);
if (index >= 0)
{
index0 = index;
mActiveId0 = @event.getPointerId(index);
x0 = getRawX(@event, index);
y0 = getRawY(@event, index);
p0sloppy = false;
}
}
if (p1sloppy)
{
// Do we have a different pointer that isn't sloppy?
int index = findNewActiveIndex(@event, mActiveId0, index1);
if (index >= 0)
{
index1 = index;
mActiveId1 = @event.getPointerId(index);
x1 = getRawX(@event, index);
y1 = getRawY(@event, index);
p1sloppy = false;
}
}
if (p0sloppy && p1sloppy)
{
mFocusX = -1;
mFocusY = -1;
}
else
{
if (p0sloppy)
{
mFocusX = @event.getX(index1);
mFocusY = @event.getY(index1);
}
else
{
if (p1sloppy)
{
mFocusX = @event.getX(index0);
mFocusY = @event.getY(index0);
}
else
{
mSloppyGesture = false;
mGestureInProgress = mListener.onScaleBegin(this);
}
}
}
}
break;
}
case android.view.MotionEvent.ACTION_POINTER_UP:
{
if (mSloppyGesture)
{
int pointerCount = @event.getPointerCount();
int actionIndex = @event.getActionIndex();
int actionId = @event.getPointerId(actionIndex);
if (pointerCount > 2)
{
if (actionId == mActiveId0)
{
int newIndex = findNewActiveIndex(@event, mActiveId1, actionIndex);
if (newIndex >= 0)
{
mActiveId0 = @event.getPointerId(newIndex);
}
}
else
{
if (actionId == mActiveId1)
{
int newIndex = findNewActiveIndex(@event, mActiveId0, actionIndex);
if (newIndex >= 0)
{
mActiveId1 = @event.getPointerId(newIndex);
}
}
}
}
else
{
// Set focus point to the remaining finger
int index = @event.findPointerIndex(actionId == mActiveId0 ? mActiveId1 : mActiveId0
);
if (index < 0)
{
mInvalidGesture = true;
android.util.Log.e(TAG, "Invalid MotionEvent stream detected.", new System.Exception
());
if (mGestureInProgress)
{
mListener.onScaleEnd(this);
}
return(false);
}
mActiveId0 = @event.getPointerId(index);
mActive0MostRecent = true;
mActiveId1 = -1;
mFocusX = @event.getX(index);
mFocusY = @event.getY(index);
}
}
break;
}
}
}
else
{
switch (action)
{
case android.view.MotionEvent.ACTION_POINTER_DOWN:
{
// Transform gesture in progress - attempt to handle it
// End the old gesture and begin a new one with the most recent two fingers.
mListener.onScaleEnd(this);
int oldActive0 = mActiveId0;
int oldActive1 = mActiveId1;
reset();
mPrevEvent = android.view.MotionEvent.obtain(@event);
mActiveId0 = mActive0MostRecent ? oldActive0 : oldActive1;
mActiveId1 = @event.getPointerId(@event.getActionIndex());
mActive0MostRecent = false;
int index0 = @event.findPointerIndex(mActiveId0);
if (index0 < 0 || mActiveId0 == mActiveId1)
{
// Probably someone sending us a broken event stream.
android.util.Log.e(TAG, "Got " + android.view.MotionEvent.actionToString(action)
+ " with bad state while a gesture was in progress. " + "Did you forget to pass an event to "
+ "ScaleGestureDetector#onTouchEvent?");
index0 = findNewActiveIndex(@event, mActiveId0 == mActiveId1 ? -1 : mActiveId1, index0
);
mActiveId0 = @event.getPointerId(index0);
}
setContext(@event);
mGestureInProgress = mListener.onScaleBegin(this);
break;
}
case android.view.MotionEvent.ACTION_POINTER_UP:
{
int pointerCount = @event.getPointerCount();
int actionIndex = @event.getActionIndex();
int actionId = @event.getPointerId(actionIndex);
bool gestureEnded = false;
if (pointerCount > 2)
{
if (actionId == mActiveId0)
{
int newIndex = findNewActiveIndex(@event, mActiveId1, actionIndex);
if (newIndex >= 0)
{
mListener.onScaleEnd(this);
mActiveId0 = @event.getPointerId(newIndex);
mActive0MostRecent = true;
mPrevEvent = android.view.MotionEvent.obtain(@event);
setContext(@event);
mGestureInProgress = mListener.onScaleBegin(this);
}
else
{
gestureEnded = true;
}
}
else
{
if (actionId == mActiveId1)
{
int newIndex = findNewActiveIndex(@event, mActiveId0, actionIndex);
if (newIndex >= 0)
{
mListener.onScaleEnd(this);
mActiveId1 = @event.getPointerId(newIndex);
mActive0MostRecent = false;
mPrevEvent = android.view.MotionEvent.obtain(@event);
setContext(@event);
mGestureInProgress = mListener.onScaleBegin(this);
}
else
{
gestureEnded = true;
}
}
}
mPrevEvent.recycle();
mPrevEvent = android.view.MotionEvent.obtain(@event);
setContext(@event);
}
else
{
gestureEnded = true;
}
if (gestureEnded)
{
// Gesture ended
setContext(@event);
// Set focus point to the remaining finger
int activeId = actionId == mActiveId0 ? mActiveId1 : mActiveId0;
int index = @event.findPointerIndex(activeId);
mFocusX = @event.getX(index);
mFocusY = @event.getY(index);
mListener.onScaleEnd(this);
reset();
mActiveId0 = activeId;
mActive0MostRecent = true;
}
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
mListener.onScaleEnd(this);
reset();
break;
}
case android.view.MotionEvent.ACTION_UP:
{
reset();
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
setContext(@event);
// Only accept the event if our relative pressure is within
// a certain limit - this can help filter shaky data as a
// finger is lifted.
if (mCurrPressure / mPrevPressure > PRESSURE_THRESHOLD)
{
bool updatePrevious = mListener.onScale(this);
if (updatePrevious)
{
mPrevEvent.recycle();
mPrevEvent = android.view.MotionEvent.obtain(@event);
}
}
break;
}
}
}
}
if (!handled && mInputEventConsistencyVerifier != null)
{
mInputEventConsistencyVerifier.onUnhandledEvent(@event, 0);
}
return(handled);
}
/// <summary>
/// Will forward touch events to the delegate view if the event is within the bounds
/// specified in the constructor.
/// </summary>
/// <remarks>
/// Will forward touch events to the delegate view if the event is within the bounds
/// specified in the constructor.
/// </remarks>
/// <param name="event">The touch event to forward</param>
/// <returns>True if the event was forwarded to the delegate, false otherwise.</returns>
public virtual bool onTouchEvent(android.view.MotionEvent @event)
{
int x = (int)@event.getX();
int y = (int)@event.getY();
bool sendToDelegate = false;
bool hit = true;
bool handled = false;
switch (@event.getAction())
{
case android.view.MotionEvent.ACTION_DOWN:
{
android.graphics.Rect bounds = mBounds;
if (bounds.contains(x, y))
{
mDelegateTargeted = true;
sendToDelegate = true;
}
break;
}
case android.view.MotionEvent.ACTION_UP:
case android.view.MotionEvent.ACTION_MOVE:
{
sendToDelegate = mDelegateTargeted;
if (sendToDelegate)
{
android.graphics.Rect slopBounds = mSlopBounds;
if (!slopBounds.contains(x, y))
{
hit = false;
}
}
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
sendToDelegate = mDelegateTargeted;
mDelegateTargeted = false;
break;
}
}
if (sendToDelegate)
{
android.view.View delegateView = mDelegateView;
if (hit)
{
// Offset event coordinates to be inside the target view
@event.setLocation(delegateView.getWidth() / 2, delegateView.getHeight() / 2);
}
else
{
// Offset event coordinates to be outside the target view (in case it does
// something like tracking pressed state)
int slop = mSlop;
@event.setLocation(-(slop * 2), -(slop * 2));
}
handled = delegateView.dispatchTouchEvent(@event);
}
return(handled);
}
public override bool onTouchEvent(android.view.MotionEvent @event)
{
if (!mIsUserSeekable || !isEnabled())
{
return(false);
}
switch (@event.getAction())
{
case android.view.MotionEvent.ACTION_DOWN:
{
if (isInScrollingContainer())
{
mTouchDownX = @event.getX();
}
else
{
setPressed(true);
if (mThumb != null)
{
invalidate(mThumb.getBounds());
}
// This may be within the padding region
onStartTrackingTouch();
trackTouchEvent(@event);
attemptClaimDrag();
}
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
if (mIsDragging)
{
trackTouchEvent(@event);
}
else
{
float x = @event.getX();
if (System.Math.Abs(x - mTouchDownX) > mScaledTouchSlop)
{
setPressed(true);
if (mThumb != null)
{
invalidate(mThumb.getBounds());
}
// This may be within the padding region
onStartTrackingTouch();
trackTouchEvent(@event);
attemptClaimDrag();
}
}
break;
}
case android.view.MotionEvent.ACTION_UP:
{
if (mIsDragging)
{
trackTouchEvent(@event);
onStopTrackingTouch();
setPressed(false);
}
else
{
// Touch up when we never crossed the touch slop threshold should
// be interpreted as a tap-seek to that location.
onStartTrackingTouch();
trackTouchEvent(@event);
onStopTrackingTouch();
}
// ProgressBar doesn't know to repaint the thumb drawable
// in its inactive state when the touch stops (because the
// value has not apparently changed)
invalidate();
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
if (mIsDragging)
{
onStopTrackingTouch();
setPressed(false);
}
invalidate();
// see above explanation
break;
}
}
return(true);
}
/// <summary>
/// Analyzes the given motion event and if applicable triggers the
/// appropriate callbacks on the
/// <see cref="OnGestureListener">OnGestureListener</see>
/// supplied.
/// </summary>
/// <param name="ev">The current motion event.</param>
/// <returns>
/// true if the
/// <see cref="OnGestureListener">OnGestureListener</see>
/// consumed the event,
/// else false.
/// </returns>
public virtual bool onTouchEvent(android.view.MotionEvent ev)
{
if (mInputEventConsistencyVerifier != null)
{
mInputEventConsistencyVerifier.onTouchEvent(ev, 0);
}
int action = ev.getAction();
float y = ev.getY();
float x = ev.getX();
if (mVelocityTracker == null)
{
mVelocityTracker = android.view.VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
bool handled = false;
switch (action & android.view.MotionEvent.ACTION_MASK)
{
case android.view.MotionEvent.ACTION_POINTER_DOWN:
{
if (mIgnoreMultitouch)
{
// Multitouch event - abort.
cancel();
}
break;
}
case android.view.MotionEvent.ACTION_POINTER_UP:
{
// Ending a multitouch gesture and going back to 1 finger
if (mIgnoreMultitouch && ev.getPointerCount() == 2)
{
int index = (((action & android.view.MotionEvent.ACTION_POINTER_INDEX_MASK) >> android.view.MotionEvent
.ACTION_POINTER_INDEX_SHIFT) == 0) ? 1 : 0;
mLastMotionX = ev.getX(index);
mLastMotionY = ev.getY(index);
mVelocityTracker.recycle();
mVelocityTracker = android.view.VelocityTracker.obtain();
}
break;
}
case android.view.MotionEvent.ACTION_DOWN:
{
if (mDoubleTapListener != null)
{
bool hadTapMessage = mHandler.hasMessages(TAP);
if (hadTapMessage)
{
mHandler.removeMessages(TAP);
}
if ((mCurrentDownEvent != null) && (mPreviousUpEvent != null) && hadTapMessage &&
isConsideredDoubleTap(mCurrentDownEvent, mPreviousUpEvent, ev))
{
// This is a second tap
mIsDoubleTapping = true;
// Give a callback with the first tap of the double-tap
handled |= mDoubleTapListener.onDoubleTap(mCurrentDownEvent);
// Give a callback with down event of the double-tap
handled |= mDoubleTapListener.onDoubleTapEvent(ev);
}
else
{
// This is a first tap
mHandler.sendEmptyMessageDelayed(TAP, DOUBLE_TAP_TIMEOUT);
}
}
mLastMotionX = x;
mLastMotionY = y;
if (mCurrentDownEvent != null)
{
mCurrentDownEvent.recycle();
}
mCurrentDownEvent = android.view.MotionEvent.obtain(ev);
mAlwaysInTapRegion = true;
mAlwaysInBiggerTapRegion = true;
mStillDown = true;
mInLongPress = false;
if (mIsLongpressEnabled)
{
mHandler.removeMessages(LONG_PRESS);
mHandler.sendEmptyMessageAtTime(LONG_PRESS, mCurrentDownEvent.getDownTime() + TAP_TIMEOUT
+ LONGPRESS_TIMEOUT);
}
mHandler.sendEmptyMessageAtTime(SHOW_PRESS, mCurrentDownEvent.getDownTime() + TAP_TIMEOUT
);
handled |= mListener.onDown(ev);
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
if (mInLongPress || (mIgnoreMultitouch && ev.getPointerCount() > 1))
{
break;
}
float scrollX = mLastMotionX - x;
float scrollY = mLastMotionY - y;
if (mIsDoubleTapping)
{
// Give the move events of the double-tap
handled |= mDoubleTapListener.onDoubleTapEvent(ev);
}
else
{
if (mAlwaysInTapRegion)
{
int deltaX = (int)(x - mCurrentDownEvent.getX());
int deltaY = (int)(y - mCurrentDownEvent.getY());
int distance = (deltaX * deltaX) + (deltaY * deltaY);
if (distance > mTouchSlopSquare)
{
handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
mLastMotionX = x;
mLastMotionY = y;
mAlwaysInTapRegion = false;
mHandler.removeMessages(TAP);
mHandler.removeMessages(SHOW_PRESS);
mHandler.removeMessages(LONG_PRESS);
}
if (distance > mBiggerTouchSlopSquare)
{
mAlwaysInBiggerTapRegion = false;
}
}
else
{
if ((System.Math.Abs(scrollX) >= 1) || (System.Math.Abs(scrollY) >= 1))
{
handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
mLastMotionX = x;
mLastMotionY = y;
}
}
}
break;
}
case android.view.MotionEvent.ACTION_UP:
{
mStillDown = false;
android.view.MotionEvent currentUpEvent = android.view.MotionEvent.obtain(ev);
if (mIsDoubleTapping)
{
// Finally, give the up event of the double-tap
handled |= mDoubleTapListener.onDoubleTapEvent(ev);
}
else
{
if (mInLongPress)
{
mHandler.removeMessages(TAP);
mInLongPress = false;
}
else
{
if (mAlwaysInTapRegion)
{
handled = mListener.onSingleTapUp(ev);
}
else
{
// A fling must travel the minimum tap distance
android.view.VelocityTracker velocityTracker = mVelocityTracker;
velocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
float velocityY = velocityTracker.getYVelocity();
float velocityX = velocityTracker.getXVelocity();
if ((System.Math.Abs(velocityY) > mMinimumFlingVelocity) || (System.Math.Abs(velocityX
) > mMinimumFlingVelocity))
{
handled = mListener.onFling(mCurrentDownEvent, ev, velocityX, velocityY);
}
}
}
}
if (mPreviousUpEvent != null)
{
mPreviousUpEvent.recycle();
}
// Hold the event we obtained above - listeners may have changed the original.
mPreviousUpEvent = currentUpEvent;
mVelocityTracker.recycle();
mVelocityTracker = null;
mIsDoubleTapping = false;
mHandler.removeMessages(SHOW_PRESS);
mHandler.removeMessages(LONG_PRESS);
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
cancel();
break;
}
}
if (!handled && mInputEventConsistencyVerifier != null)
{
mInputEventConsistencyVerifier.onUnhandledEvent(ev, 0);
}
return(handled);
}
public override bool onTouchEvent(android.view.MotionEvent ev)
{
mVelocityTracker.addMovement(ev);
int action = ev.getActionMasked();
switch (action)
{
case android.view.MotionEvent.ACTION_DOWN:
{
float x = ev.getX();
float y = ev.getY();
if (isEnabled() && hitThumb(x, y))
{
mTouchMode = TOUCH_MODE_DOWN;
mTouchX = x;
mTouchY = y;
}
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
switch (mTouchMode)
{
case TOUCH_MODE_IDLE:
{
// Didn't target the thumb, treat normally.
break;
}
case TOUCH_MODE_DOWN:
{
float x = ev.getX();
float y = ev.getY();
if (System.Math.Abs(x - mTouchX) > mTouchSlop || System.Math.Abs(y - mTouchY) > mTouchSlop)
{
mTouchMode = TOUCH_MODE_DRAGGING;
getParent().requestDisallowInterceptTouchEvent(true);
mTouchX = x;
mTouchY = y;
return(true);
}
break;
}
case TOUCH_MODE_DRAGGING:
{
float x = ev.getX();
float dx = x - mTouchX;
float newPos = System.Math.Max(0, System.Math.Min(mThumbPosition + dx, getThumbScrollRange
()));
if (newPos != mThumbPosition)
{
mThumbPosition = newPos;
mTouchX = x;
invalidate();
}
return(true);
}
}
break;
}
case android.view.MotionEvent.ACTION_UP:
case android.view.MotionEvent.ACTION_CANCEL:
{
if (mTouchMode == TOUCH_MODE_DRAGGING)
{
stopDrag(ev);
return(true);
}
mTouchMode = TOUCH_MODE_IDLE;
mVelocityTracker.clear();
break;
}
}
return(base.onTouchEvent(ev));
}
public void run()
{
__this._renderer.setAngle(__value.getX());
}
internal virtual bool onTouchEvent(android.view.MotionEvent me)
{
if (mState == STATE_NONE)
{
return(false);
}
int action = me.getAction();
if (action == android.view.MotionEvent.ACTION_DOWN)
{
if (isPointInside(me.getX(), me.getY()))
{
if (!mList.isInScrollingContainer())
{
beginDrag();
return(true);
}
mInitialTouchY = me.getY();
startPendingDrag();
}
}
else
{
if (action == android.view.MotionEvent.ACTION_UP)
{
// don't add ACTION_CANCEL here
if (mPendingDrag)
{
// Allow a tap to scroll.
beginDrag();
int viewHeight = mList.getHeight();
// Jitter
int newThumbY = (int)me.getY() - mThumbH + 10;
if (newThumbY < 0)
{
newThumbY = 0;
}
else
{
if (newThumbY + mThumbH > viewHeight)
{
newThumbY = viewHeight - mThumbH;
}
}
mThumbY = newThumbY;
scrollTo((float)mThumbY / (viewHeight - mThumbH));
cancelPendingDrag();
}
// Will hit the STATE_DRAGGING check below
if (mState == STATE_DRAGGING)
{
if (mList != null)
{
// ViewGroup does the right thing already, but there might
// be other classes that don't properly reset on touch-up,
// so do this explicitly just in case.
mList.requestDisallowInterceptTouchEvent(false);
mList.reportScrollStateChange(android.widget.AbsListView.OnScrollListenerClass.SCROLL_STATE_IDLE
);
}
setState(STATE_VISIBLE);
android.os.Handler handler = mHandler;
handler.removeCallbacks(mScrollFade);
if (!mAlwaysShow)
{
handler.postDelayed(mScrollFade, 1000);
}
mList.invalidate();
return(true);
}
}
else
{
if (action == android.view.MotionEvent.ACTION_MOVE)
{
if (mPendingDrag)
{
float y = me.getY();
if (System.Math.Abs(y - mInitialTouchY) > mScaledTouchSlop)
{
setState(STATE_DRAGGING);
if (mListAdapter == null && mList != null)
{
getSectionsFromIndexer();
}
if (mList != null)
{
mList.requestDisallowInterceptTouchEvent(true);
mList.reportScrollStateChange(android.widget.AbsListView.OnScrollListenerClass.SCROLL_STATE_TOUCH_SCROLL
);
}
cancelFling();
cancelPendingDrag();
}
}
// Will hit the STATE_DRAGGING check below
if (mState == STATE_DRAGGING)
{
int viewHeight = mList.getHeight();
// Jitter
int newThumbY = (int)me.getY() - mThumbH + 10;
if (newThumbY < 0)
{
newThumbY = 0;
}
else
{
if (newThumbY + mThumbH > viewHeight)
{
newThumbY = viewHeight - mThumbH;
}
}
if (System.Math.Abs(mThumbY - newThumbY) < 2)
{
return(true);
}
mThumbY = newThumbY;
// If the previous scrollTo is still pending
if (mScrollCompleted)
{
scrollTo((float)mThumbY / (viewHeight - mThumbH));
}
return(true);
}
}
else
{
if (action == android.view.MotionEvent.ACTION_CANCEL)
{
cancelPendingDrag();
}
}
}
}
return(false);
}
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: @Override public boolean onTouchEvent(final android.view.MotionEvent event)
public override bool onTouchEvent(MotionEvent @event)
{
bool handled = false;
OfficeThing touchedThing;
int xTouchLogical;
int yTouchLogical;
int pointerId;
int actionIndex = @event.ActionIndex;
// get touch event coordinates and make transparent wrapper from it
switch (@event.ActionMasked)
{
case MotionEvent.ACTION_DOWN:
// first pointer, clear the pointer
mSelectedThing = null;
xTouchLogical = screenToModel((int) @event.getX(0));
yTouchLogical = screenToModel((int) @event.getY(0));
// check if we've touched inside something
touchedThing = getTouchedThing(xTouchLogical, yTouchLogical);
if (touchedThing == null)
{
mSelectedThingChangeListener.thingChanged(null);
break;
}
mSelectedThing = touchedThing;
if (null != mSelectedThingChangeListener)
{
mSelectedThingChangeListener.thingChanged(touchedThing);
}
touchedThing.setzIndex(mOfficeLayout.HighestzIndex + 1);
Log.v(TAG, "Selected " + touchedThing);
handled = true;
break;
case MotionEvent.ACTION_MOVE:
pointerId = @event.getPointerId(actionIndex);
if (pointerId > 0)
{
break;
}
xTouchLogical = screenToModel((int) @event.getX(actionIndex));
yTouchLogical = screenToModel((int) @event.getY(actionIndex));
touchedThing = mSelectedThing;
if (null == touchedThing)
{
break;
}
moveThing(touchedThing, xTouchLogical, yTouchLogical);
handled = true;
break;
case MotionEvent.ACTION_UP:
mSelectedThing = null;
invalidate();
handled = true;
break;
case MotionEvent.ACTION_CANCEL:
handled = true;
break;
}
return base.onTouchEvent(@event) || handled;
}
public override bool onTouchEvent(android.widget.TextView widget, android.text.Spannable
buffer, android.view.MotionEvent @event)
{
int initialScrollX = -1;
int initialScrollY = -1;
int action = @event.getAction();
if (action == android.view.MotionEvent.ACTION_UP)
{
initialScrollX = android.text.method.Touch.getInitialScrollX(widget, buffer);
initialScrollY = android.text.method.Touch.getInitialScrollY(widget, buffer);
}
bool handled = android.text.method.Touch.onTouchEvent(widget, buffer, @event);
if (widget.isFocused() && !widget.didTouchFocusSelect())
{
if (action == android.view.MotionEvent.ACTION_DOWN)
{
if (isSelecting(buffer))
{
int offset = widget.getOffsetForPosition(@event.getX(), @event.getY());
buffer.setSpan(LAST_TAP_DOWN, offset, offset, android.text.SpannedClass.SPAN_POINT_POINT
);
// Disallow intercepting of the touch events, so that
// users can scroll and select at the same time.
// without this, users would get booted out of select
// mode once the view detected it needed to scroll.
widget.getParent().requestDisallowInterceptTouchEvent(true);
}
}
else
{
if (action == android.view.MotionEvent.ACTION_MOVE)
{
if (isSelecting(buffer) && handled)
{
// Before selecting, make sure we've moved out of the "slop".
// handled will be true, if we're in select mode AND we're
// OUT of the slop
// Turn long press off while we're selecting. User needs to
// re-tap on the selection to enable long press
widget.cancelLongPress();
// Update selection as we're moving the selection area.
// Get the current touch position
int offset = widget.getOffsetForPosition(@event.getX(), @event.getY());
android.text.Selection.extendSelection(buffer, offset);
return(true);
}
}
else
{
if (action == android.view.MotionEvent.ACTION_UP)
{
// If we have scrolled, then the up shouldn't move the cursor,
// but we do need to make sure the cursor is still visible at
// the current scroll offset to avoid the scroll jumping later
// to show it.
if ((initialScrollY >= 0 && initialScrollY != widget.getScrollY()) || (initialScrollX
>= 0 && initialScrollX != widget.getScrollX()))
{
widget.moveCursorToVisibleOffset();
return(true);
}
int offset = widget.getOffsetForPosition(@event.getX(), @event.getY());
if (isSelecting(buffer))
{
buffer.removeSpan(LAST_TAP_DOWN);
android.text.Selection.extendSelection(buffer, offset);
}
else
{
if (!widget.shouldIgnoreActionUpEvent())
{
android.text.Selection.setSelection(buffer, offset);
}
}
android.text.method.MetaKeyKeyListener.adjustMetaAfterKeypress(buffer);
android.text.method.MetaKeyKeyListener.resetLockedMeta(buffer);
return(true);
}
}
}
}
return(handled);
}
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: @Override public boolean onTouchEvent(final android.view.MotionEvent event)
public override bool onTouchEvent(MotionEvent @event)
{
bool handled = false;
OfficeThing touchedThing;
int xTouchLogical;
int yTouchLogical;
int pointerId;
int actionIndex = @event.ActionIndex;
// get touch event coordinates and make transparent wrapper from it
switch (@event.ActionMasked)
{
case MotionEvent.ACTION_DOWN:
// first pointer, clear the pointer
mSelectedThing = null;
xTouchLogical = screenToModel((int)@event.getX(0));
yTouchLogical = screenToModel((int)@event.getY(0));
// check if we've touched inside something
touchedThing = getTouchedThing(xTouchLogical, yTouchLogical);
if (touchedThing == null)
{
mSelectedThingChangeListener.thingChanged(null);
break;
}
mSelectedThing = touchedThing;
if (null != mSelectedThingChangeListener)
{
mSelectedThingChangeListener.thingChanged(touchedThing);
}
touchedThing.setzIndex(mOfficeLayout.HighestzIndex + 1);
Log.v(TAG, "Selected " + touchedThing);
handled = true;
break;
case MotionEvent.ACTION_MOVE:
pointerId = @event.getPointerId(actionIndex);
if (pointerId > 0)
{
break;
}
xTouchLogical = screenToModel((int)@event.getX(actionIndex));
yTouchLogical = screenToModel((int)@event.getY(actionIndex));
touchedThing = mSelectedThing;
if (null == touchedThing)
{
break;
}
moveThing(touchedThing, xTouchLogical, yTouchLogical);
handled = true;
break;
case MotionEvent.ACTION_UP:
mSelectedThing = null;
invalidate();
handled = true;
break;
case MotionEvent.ACTION_CANCEL:
handled = true;
break;
}
return(base.onTouchEvent(@event) || handled);
}
public void run()
{
__this._renderer.setColor(__value.getX() / __this.getWidth(), __value.getY() / __this.getHeight(), 1.0f);
__this._renderer.setAngle(__value.getX() / 10);
}
/// <summary>
/// Analyzes the given motion event and if applicable triggers the
/// appropriate callbacks on the
/// <see cref="OnGestureListener">OnGestureListener</see>
/// supplied.
/// </summary>
/// <param name="ev">The current motion event.</param>
/// <returns>
/// true if the
/// <see cref="OnGestureListener">OnGestureListener</see>
/// consumed the event,
/// else false.
/// </returns>
public virtual bool onTouchEvent(android.view.MotionEvent ev)
{
if (mInputEventConsistencyVerifier != null)
{
mInputEventConsistencyVerifier.onTouchEvent(ev, 0);
}
int action = ev.getAction();
float y = ev.getY();
float x = ev.getX();
if (mVelocityTracker == null)
{
mVelocityTracker = android.view.VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
bool handled = false;
switch (action & android.view.MotionEvent.ACTION_MASK)
{
case android.view.MotionEvent.ACTION_POINTER_DOWN:
{
if (mIgnoreMultitouch)
{
// Multitouch event - abort.
cancel();
}
break;
}
case android.view.MotionEvent.ACTION_POINTER_UP:
{
// Ending a multitouch gesture and going back to 1 finger
if (mIgnoreMultitouch && ev.getPointerCount() == 2)
{
int index = (((action & android.view.MotionEvent.ACTION_POINTER_INDEX_MASK) >> android.view.MotionEvent
.ACTION_POINTER_INDEX_SHIFT) == 0) ? 1 : 0;
mLastMotionX = ev.getX(index);
mLastMotionY = ev.getY(index);
mVelocityTracker.recycle();
mVelocityTracker = android.view.VelocityTracker.obtain();
}
break;
}
case android.view.MotionEvent.ACTION_DOWN:
{
if (mDoubleTapListener != null)
{
bool hadTapMessage = mHandler.hasMessages(TAP);
if (hadTapMessage)
{
mHandler.removeMessages(TAP);
}
if ((mCurrentDownEvent != null) && (mPreviousUpEvent != null) && hadTapMessage &&
isConsideredDoubleTap(mCurrentDownEvent, mPreviousUpEvent, ev))
{
// This is a second tap
mIsDoubleTapping = true;
// Give a callback with the first tap of the double-tap
handled |= mDoubleTapListener.onDoubleTap(mCurrentDownEvent);
// Give a callback with down event of the double-tap
handled |= mDoubleTapListener.onDoubleTapEvent(ev);
}
else
{
// This is a first tap
mHandler.sendEmptyMessageDelayed(TAP, DOUBLE_TAP_TIMEOUT);
}
}
mLastMotionX = x;
mLastMotionY = y;
if (mCurrentDownEvent != null)
{
mCurrentDownEvent.recycle();
}
mCurrentDownEvent = android.view.MotionEvent.obtain(ev);
mAlwaysInTapRegion = true;
mAlwaysInBiggerTapRegion = true;
mStillDown = true;
mInLongPress = false;
if (mIsLongpressEnabled)
{
mHandler.removeMessages(LONG_PRESS);
mHandler.sendEmptyMessageAtTime(LONG_PRESS, mCurrentDownEvent.getDownTime() + TAP_TIMEOUT
+ LONGPRESS_TIMEOUT);
}
mHandler.sendEmptyMessageAtTime(SHOW_PRESS, mCurrentDownEvent.getDownTime() + TAP_TIMEOUT
);
handled |= mListener.onDown(ev);
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
if (mInLongPress || (mIgnoreMultitouch && ev.getPointerCount() > 1))
{
break;
}
float scrollX = mLastMotionX - x;
float scrollY = mLastMotionY - y;
if (mIsDoubleTapping)
{
// Give the move events of the double-tap
handled |= mDoubleTapListener.onDoubleTapEvent(ev);
}
else
{
if (mAlwaysInTapRegion)
{
int deltaX = (int)(x - mCurrentDownEvent.getX());
int deltaY = (int)(y - mCurrentDownEvent.getY());
int distance = (deltaX * deltaX) + (deltaY * deltaY);
if (distance > mTouchSlopSquare)
{
handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
mLastMotionX = x;
mLastMotionY = y;
mAlwaysInTapRegion = false;
mHandler.removeMessages(TAP);
mHandler.removeMessages(SHOW_PRESS);
mHandler.removeMessages(LONG_PRESS);
}
if (distance > mBiggerTouchSlopSquare)
{
mAlwaysInBiggerTapRegion = false;
}
}
else
{
if ((System.Math.Abs(scrollX) >= 1) || (System.Math.Abs(scrollY) >= 1))
{
handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
mLastMotionX = x;
mLastMotionY = y;
}
}
}
break;
}
case android.view.MotionEvent.ACTION_UP:
{
mStillDown = false;
android.view.MotionEvent currentUpEvent = android.view.MotionEvent.obtain(ev);
if (mIsDoubleTapping)
{
// Finally, give the up event of the double-tap
handled |= mDoubleTapListener.onDoubleTapEvent(ev);
}
else
{
if (mInLongPress)
{
mHandler.removeMessages(TAP);
mInLongPress = false;
}
else
{
if (mAlwaysInTapRegion)
{
handled = mListener.onSingleTapUp(ev);
}
else
{
// A fling must travel the minimum tap distance
android.view.VelocityTracker velocityTracker = mVelocityTracker;
velocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
float velocityY = velocityTracker.getYVelocity();
float velocityX = velocityTracker.getXVelocity();
if ((System.Math.Abs(velocityY) > mMinimumFlingVelocity) || (System.Math.Abs(velocityX
) > mMinimumFlingVelocity))
{
handled = mListener.onFling(mCurrentDownEvent, ev, velocityX, velocityY);
}
}
}
}
if (mPreviousUpEvent != null)
{
mPreviousUpEvent.recycle();
}
// Hold the event we obtained above - listeners may have changed the original.
mPreviousUpEvent = currentUpEvent;
mVelocityTracker.recycle();
mVelocityTracker = null;
mIsDoubleTapping = false;
mHandler.removeMessages(SHOW_PRESS);
mHandler.removeMessages(LONG_PRESS);
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
cancel();
break;
}
}
if (!handled && mInputEventConsistencyVerifier != null)
{
mInputEventConsistencyVerifier.onUnhandledEvent(ev, 0);
}
return handled;
}