コード例 #1
0
        public PanningViewCell(View mainView, BaseSwipeAction leftSideView, BaseSwipeAction rightSideView)
        {
            // get references to our bits
            mainCellView       = mainView;
            this.leftSideView  = leftSideView;
            this.rightSideView = rightSideView;

            // lay it out in a grid
            var grid = new Grid();

            grid.RowDefinitions.Add(new RowDefinition());
            grid.ColumnDefinitions.Add(new ColumnDefinition());

            // make swipe views invisible so they don't show through
            if (HasLeftSwipe)
            {
                leftSideView.IsVisible = false;
                grid.Children.Add(leftSideView, 0, 0);
            }

            if (HasRightSwipe)
            {
                rightSideView.IsVisible = false;
                grid.Children.Add(rightSideView, 0, 0);
            }

            grid.Children.Add(mainView, 0, 0);

            var panner = new PanGestureRecognizer();

            panner.PanUpdated += async(s, e) =>
            {
                if (e.StatusType == GestureStatus.Running)
                {
                    // if we don't have either swipe panel... we done here.
                    if (!HasLeftSwipe && !HasRightSwipe)
                    {
                        return;
                    }

                    // show the appropriate swipe menu based on direction
                    if (HasRightSwipe)
                    {
                        rightSideView.BackgroundColor = (e.TotalX < -MinimumSwipeAmount)
                                    ? rightSideView.ActiveBackgroundColor
                                    : rightSideView.InactiveBackgroundColor;

                        rightSideView.IsVisible = e.TotalX < 0 ? true : false;
                    }

                    if (HasLeftSwipe)
                    {
                        leftSideView.BackgroundColor = (e.TotalX > MinimumSwipeAmount)
                                    ? leftSideView.ActiveBackgroundColor
                                    : leftSideView.InactiveBackgroundColor;

                        leftSideView.IsVisible = e.TotalX > 0 ? true : false;
                    }

                    // slide the mainview
                    mainView.TranslationX = e.TotalX;
                }

                if (e.StatusType == GestureStatus.Completed)
                {
                    // haven't met left or right minimum swipe distances
                    if (mainView.TranslationX < MinimumSwipeAmount &&
                        mainView.TranslationX > -MinimumSwipeAmount)
                    {
                        // slide back to just show the mainview
                        await mainView.TranslateTo(0, 0, 250, Easing.SinInOut);

                        rightSideView.IsVisible = leftSideView.IsVisible = false;
                    }
                    else
                    {
                        // show the full view
                        if (mainView.TranslationX < MinimumSwipeAmount)
                        {
                            if (rightSideView.AfterSwipeAction == BaseSwipeAction.AfterSwipe.ReturnToView)
                            {
                                await mainView.TranslateTo(0, 0, 250, Easing.SinInOut);
                            }
                            else
                            {
                                await mainView.TranslateTo(-mainView.Width, 0, 250, Easing.SinInOut);
                            }

                            if (rightSideView.ActionCommand != null)
                            {
                                rightSideView.ActionCommand.Execute(this.BindingContext);
                            }
                        }
                        else
                        {
                            if (leftSideView.AfterSwipeAction == BaseSwipeAction.AfterSwipe.ReturnToView)
                            {
                                await mainView.TranslateTo(0, 0, 250, Easing.SinInOut);
                            }
                            else
                            {
                                await mainView.TranslateTo(mainView.Width, 0, 250, Easing.SinInOut);
                            }

                            if (leftSideView.ActionCommand != null)
                            {
                                leftSideView.ActionCommand.Execute(this.BindingContext);
                            }
                        }
                    }
                }

                if (e.StatusType == GestureStatus.Canceled)
                {
                    await mainView.TranslateTo(0, 0, 250, Easing.SinInOut);

                    rightSideView.IsVisible = leftSideView.IsVisible = false;
                }
            };
            grid.GestureRecognizers.Add(panner);
            View = grid;
        }
コード例 #2
0
        public PanningViewCell(View mainView, BaseSwipeAction leftSideView, BaseSwipeAction rightSideView)
        {
            mainCellView       = mainView;
            this.leftSideView  = leftSideView;
            this.rightSideView = rightSideView;

            // put it all in a grid
            var grid = new Grid();

            grid.RowDefinitions.Add(new RowDefinition());
            grid.ColumnDefinitions.Add(new ColumnDefinition());

            //mainView = new MainView();
            //leftView = new LeftSwipe();
            //rightView = new RightSwipe();

            // make swipe views invisible so they don't show through
            if (HasLeftSwipe)
            {
                leftSideView.IsVisible = false;
                grid.Children.Add(leftSideView, 0, 0);
            }

            if (HasRightSwipe)
            {
                rightSideView.IsVisible = false;
                grid.Children.Add(rightSideView, 0, 0);
            }

            //grid.Children.Add(leftView, 0, 0);
            //grid.Children.Add(rightView, 0, 0);
            grid.Children.Add(mainView, 0, 0);

            var panner = new PanGestureRecognizer();

            panner.PanUpdated += async(s, e) =>
            {
                //if (e.StatusType == Ge)
                Debug.WriteLine($"PanGesture: {e.StatusType} - {e.TotalX}, {e.TotalY}");

                if (e.StatusType == GestureStatus.Running)
                {
                    // if we don't have either swipe panel... we done here.
                    if (!HasLeftSwipe && !HasRightSwipe)
                    {
                        return;
                    }


                    if (e.TotalX < 0) // moving towards the left, exposing the right view
                    {
                        if (HasRightSwipe)
                        {
                            // only show the appropriate swipe view
                            rightSideView.IsVisible = true;
                            leftSideView.IsVisible  = false;
                        }
                    }


                    // show the appropriate swipe menu based on direction
                    if (HasRightSwipe)
                    {
                        rightSideView.IsVisible = e.TotalX < 0 ? true : false;
                    }

                    if (HasLeftSwipe)
                    {
                        leftSideView.IsVisible = e.TotalX > 0 ? true : false;
                    }

                    // slide the mainview
                    mainView.TranslationX = e.TotalX;
                }

                if (e.StatusType == GestureStatus.Completed)
                {
                    // haven't met left or right swipe distances
                    if (mainView.TranslationX < MinimumSwipeAmount &&
                        mainView.TranslationX > -MinimumSwipeAmount)
                    {
                        await mainView.TranslateTo(0, 0, 250, Easing.SinInOut);

                        rightSideView.IsVisible = leftSideView.IsVisible = false;
                    }
                    else
                    {
                        if (mainView.TranslationX < MinimumSwipeAmount)
                        {
                            await mainView.TranslateTo(-mainView.Width, 0, 250, Easing.SinInOut);

                            //mainView.IsVisible = false;
                            rightSideView.ActionCommand.Execute(this.BindingContext);
                        }
                        else
                        {
                            await mainView.TranslateTo(mainView.Width, 0, 250, Easing.SinInOut);

                            //mainView.IsVisible = false;
                        }
                    }
                }
                //System.Diagnostics.Debug.WriteLine(e.TotalX.ToString());
                //mainView.TranslationX = MinimumSwipeAmount;
                //mainView.TranslateTo(e.TotalX, 0);
                //if (e.TotalX < -MinimumSwipeAmount)
                //{
                //	// Its a swipe left
                //	hiddenView.IsVisible = true;
                //	mainView.IsVisible = false;
                //}
                //else if (e.TotalX > MinimumSwipeAmount)
                //{
                //	// Its a swipe right
                //	hiddenView.IsVisible = false;
                //	mainView.IsVisible = true;
                //}
            };
            grid.GestureRecognizers.Add(panner);
            View = grid;
        }