bool OnGestureShouldBegin(BaseGestureRecognizer gestureRecognizer)
{
var shouldBegin = _currentGridY > 0 || _scrollPosition < 10;
Debug.WriteLine(">>>>>_currentGridY {0} _scrollPosition {1} shouldBegin{2}", _currentGridY, _scrollPosition, shouldBegin);
return(shouldBegin);
}
void OnAction(BaseGestureRecognizer recognizer, GestureRecognizerState state)
{
var panRecognizer = recognizer as PanGestureRecognizer;
var view = recognizer.View;
if (state == GestureRecognizerState.Began)
{
_startBounds = recognizer.View.Bounds;
Debug.WriteLine("START " + _startBounds);
}
if (state == GestureRecognizerState.Changed)
{
var message = "PAN " + recognizer + "\n";
message += "POS: " + recognizer.LocationInView(view.ParentView);
var translation = panRecognizer.GetTranslationInView(view.ParentView);
// message += "touches: " + recognizer.NumberOfTouches + ", velocity: " + velocity;
message += ", translation: " + translation;
var bounds = new Rectangle(view.X + translation.X, view.Y + translation.Y, view.Width, view.Height);
message += ", vb: " + bounds;
_startBounds.X += translation.X;
_startBounds.Y += translation.Y;
Debug.WriteLine("MOVE " + bounds);
Device.BeginInvokeOnMainThread(() => {
Label2.Layout(bounds);
});
OutputLabel.Text = message;
}
}
void Gesture_OnAction(BaseGestureRecognizer recgonizer, GestureRecognizerState state)
{
if (recgonizer.View != MediaItemsListView)
{
return;
}
var panGesture = recgonizer as PanGestureRecognizer;
Point translation = panGesture.GetTranslationInView(MainLayout);
Point velocity = panGesture.GetVelocityInView(MainLayout);
panGesture.SetTranslationInView(new Point(0, 0), MainLayout);
switch (panGesture.State)
{
case GestureRecognizerState.Began:
// MediaItemsListView.IsEnabled = false;
break;
case GestureRecognizerState.Changed:
var newY = _currentGridY + translation.Y;
newY = Math.Max(0, newY);
newY = Math.Min(400, newY);
Debug.WriteLine("newY {0} _currentGridY {1} _scrollPosition{2}", newY, _currentGridY, _scrollPosition);
bool willMoveList = false;
if (newY != _currentGridY)
{
willMoveList = _currentGridY > 0 || _scrollPosition <= 0 &&
newY > 0 && newY < Height - 100;
if (willMoveList)
{
_currentGridY = newY;
var bounds = MediaItemsListView.Bounds;
bounds.Y = _currentGridY;
MediaItemsListView.Layout(bounds);
}
MediaItemsListView.IsScrollEnabled = !willMoveList;
}
else
{
MediaItemsListView.IsScrollEnabled = true;
Debug.WriteLine("no move " + MediaItemsListView.IsScrollEnabled);
}
break;
case GestureRecognizerState.Cancelled:
case GestureRecognizerState.Ended:
case GestureRecognizerState.Failed:
MediaItemsListView.IsScrollEnabled = true;
if (_currentGridY != 0 && _currentGridY != 400)
{
_currentGridY = _currentGridY > 200 ? 400 : 0;
MediaItemsListView.LayoutTo(new Rectangle(0, _currentGridY, Width, Height));
}
break;
default:
break;
}
}
bool OnShouldBegin(BaseGestureRecognizer recognizer)
{
var panGestureRecognizer = recognizer as PanGestureRecognizer;
var translation = panGestureRecognizer.GetTranslationInView(recognizer.View.ParentView);
var moveX = Math.Abs(translation.X);
var moveY = Math.Abs(translation.Y);
return(!_onlyHorizontalPan || moveX > moveY);
}
void OnAction(BaseGestureRecognizer recognizer, GestureRecognizerState state)
{
var swipeRecognizer = recognizer as SwipeGestureRecognizer;
var view = recognizer.View;
var message = "SWIPE " + recognizer + "\n";
message += "POS: " + recognizer.LocationInView(view.ParentView);
message += "touches: " + recognizer.NumberOfTouches + ", direction: " + swipeRecognizer.Direction;
OutputLabel.Text = message;
}
void OnAction(BaseGestureRecognizer recognizer, GestureRecognizerState state)
{
var tapRecognizer = recognizer as TwinTechs.Gestures.TapGestureRecognizer;
var view = recognizer.View;
var message = string.Format("POS: {0} \n", recognizer.LocationInView(view).PrettyPrint());
message += string.Format("PARENT POS: {0} \n", recognizer.LocationInView(view.ParentView).PrettyPrint());
message += string.Format("PARENT.PARENT POS: {0} \n", recognizer.LocationInView(view.ParentView.ParentView).PrettyPrint());
message += string.Format("PAGE POS: {0} \n", recognizer.LocationInView(this).PrettyPrint());
OutputLabel.Text = message;
}
void OnAction(BaseGestureRecognizer recognizer, GestureRecognizerState state)
{
var tapRecognizer = recognizer as TwinTechs.Gestures.LongPressGestureRecognizer;
var view = recognizer.View;
var message = recognizer + "\n";
message += "POS: " + recognizer.LocationInView(view);
message += "PARENT POS: " + recognizer.LocationInView(view.ParentView);
message += "touches: " + recognizer.NumberOfTouches; // + ", taps required: " + tapRecognizer.NumberOfTapsRequired;
OutputLabel.Text = message;
}
void Gesture_OnAction(BaseGestureRecognizer recgonizer, GestureRecognizerState state)
{
var panGesture = recgonizer as PanGestureRecognizer;
Point translation = panGesture.GetTranslationInView(this);
panGesture.SetTranslationInView(new Point(0, 0), this);
// MyLabel.Text = "PAN " + recognizer.LocationInView (view.ParentView);
// Debug.WriteLine ("PAN " + panGesture);
// Debug.WriteLine ("location " + panGesture.LocationInView (this));
switch (panGesture.State)
{
case GestureRecognizerState.Began:
break;
case GestureRecognizerState.Changed:
double newPosition = _contentView.X + translation.X;
var endWidth = _contentWidth;
Debug.WriteLine("new pos " + newPosition + " endWidth " + endWidth);
if (newPosition >= ((-endWidth) - (Width / 2)) && (newPosition <= (Width / 2)))
{
_contentView.Layout(GetBoundsWithX(newPosition));
}
break;
case GestureRecognizerState.Cancelled:
case GestureRecognizerState.Ended:
case GestureRecognizerState.Failed:
//scroll to page location, set index
double currentPage = (-_contentView.X) / Width;
Boolean isBehindHalfScreen = (currentPage - (int)currentPage) > 0.5;
if (isBehindHalfScreen && (currentPage + 1) < NumberOfPages)
{
CurrentPageIndex = (int)(currentPage + 1);
}
else
{
CurrentPageIndex = (int)currentPage;
}
AnimateToPageIndex(CurrentPageIndex);
break;
case GestureRecognizerState.Possible:
default:
break;
}
}
void Gesture_OnAction(BaseGestureRecognizer recgonizer, GestureRecognizerState state)
{
string message = "";
var panGesture = recgonizer as PanGestureRecognizer;
Point translation = panGesture.GetTranslationInView(MainLayout);
Point velocity = panGesture.GetVelocityInView(MainLayout);
panGesture.SetTranslationInView(new Point(0, 0), MainLayout);
// MyLabel.Text = "PAN " + recognizer.LocationInView (view.ParentView);
// Debug.WriteLine ("PAN " + panGesture);
// Debug.WriteLine ("location " + panGesture.LocationInView (this));
switch (panGesture.State)
{
case GestureRecognizerState.Began:
message += "BEGAN ";
message += "POS: " + recgonizer.LocationInView(MainLayout);
break;
case GestureRecognizerState.Changed:
message += "CHANGED ";
message += ", translation: " + translation;
message += ", velocity: " + velocity;
message += "POS: \n" + recgonizer.LocationInView(panGesture.View).PrettyPrint();
message += "PARENT POS: \n" + recgonizer.LocationInView(MainLayout).PrettyPrint();
if (recgonizer.View == Box)
{
message += ", MOVING VIEW";
_boxBounds.X += translation.X;
_boxBounds.Y += translation.Y;
Box.Layout(_boxBounds);
}
break;
case GestureRecognizerState.Cancelled:
case GestureRecognizerState.Ended:
case GestureRecognizerState.Failed:
message += "FINISHED ";
break;
case GestureRecognizerState.Possible:
default:
break;
}
OutputLabel.Text = message;
}
void OnAction(BaseGestureRecognizer recognizer, GestureRecognizerState state)
{
var panRecognizer = recognizer as PanGestureRecognizer;
var view = recognizer.View;
var message = "PAN " + recognizer + "\n";
message += "ParentPOS: " + recognizer.LocationInView(view.ParentView);
message += "POS: " + recognizer.LocationInView(view);
var translation = panRecognizer.GetTranslationInView(view.ParentView);
var velocity = panRecognizer.GetVelocityInView(view.ParentView);
message += ", translation: " + translation;
var bounds = new Rectangle(view.X + velocity.X, view.Y + velocity.Y, view.Width, view.Height);
message += ", vb: " + bounds;
OutputLabel.Text = message;
}
void Gesture_OnAction(BaseGestureRecognizer recgonizer, GestureRecognizerState state)
{
if (recgonizer.View != _contentPage.VideoPlayerView)
{
return;
}
var panGesture = recgonizer as PanGestureRecognizer;
Point translation = panGesture.GetTranslationInView(MainLayout);
Point velocity = panGesture.GetVelocityInView(MainLayout);
panGesture.SetTranslationInView(new Point(0, 0), MainLayout);
switch (panGesture.State)
{
case GestureRecognizerState.Began:
break;
case GestureRecognizerState.Changed:
var newY = _contentBounds.Y + translation.Y;
if (newY > 0 && newY < Height - _contentPage.MinimumHeightRequest)
{
var minHeight = _contentPage.MinimumHeightRequest;
var minWidth = _contentPage.MinimumWidthRequest;
_contentBounds.Y = newY;
var complete = Math.Min(1, (Height - (_contentBounds.Y + minHeight)) / Height);
// Debug.WriteLine ("complete {0} newY {1} h{2}", complete, newY, Height);
var inverseCompletion = 1 - complete;
_contentBounds.X = (Width - minWidth) * inverseCompletion;
_contentBounds.Width = (minWidth) + ((Width - minWidth) * complete);
_contentBounds.Height = Math.Max(minHeight, (Height + minHeight) * complete);
PageContainer.Layout(_contentBounds);
}
break;
case GestureRecognizerState.Cancelled:
case GestureRecognizerState.Ended:
case GestureRecognizerState.Failed:
var isShowing = _contentBounds.Y < 200;
ToggleShowing(isShowing, true);
break;
default:
break;
}
}
void Gesture_OnAction(BaseGestureRecognizer recgonizer, GestureRecognizerState state)
{
var panGesture = recgonizer as PanGestureRecognizer;
Point translation = panGesture.GetTranslationInView(MainLayout);
Point velocity = panGesture.GetVelocityInView(MainLayout);
panGesture.SetTranslationInView(new Point(0, 0), MainLayout);
Debug.WriteLine("GESTURE STATE " + state + " trans " + translation);
switch (panGesture.State)
{
case GestureRecognizerState.Began:
break;
case GestureRecognizerState.Changed:
if (recgonizer.View == ForegroundContent)
{
_contentBounds.X += translation.X;
_contentBounds.Y = 0;
ForegroundContent.Layout(_contentBounds);
}
break;
case GestureRecognizerState.Cancelled:
case GestureRecognizerState.Ended:
case GestureRecognizerState.Failed:
_contentBounds.X = (_contentBounds.X > -(MainLayout.Width / 4)) ? 0 : -(MainLayout.Width / 2);
ForegroundContent.LayoutTo(_contentBounds);
break;
case GestureRecognizerState.Possible:
default:
break;
}
}
