Beispiel #1
0
        public ObservableCodeCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
                                                   bool grid = true, int initialItems = 1000, bool addItemsWithTimer = false)
        {
            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                }
            };

            IItemsLayout itemsLayout = grid
                                ? new GridItemsLayout(3, orientation)
                                : new ListItemsLayout(orientation) as IItemsLayout;

            var itemTemplate = ExampleTemplates.PhotoTemplate();

            var collectionView = new CollectionView {
                ItemsLayout  = itemsLayout, ItemTemplate = itemTemplate,
                AutomationId = "collectionview", Header = "This is the header"
            };

            var generator = new ItemsSourceGenerator(collectionView, initialItems, ItemsSourceType.ObservableCollection);

            var remover  = new ItemRemover(collectionView);
            var adder    = new ItemAdder(collectionView);
            var replacer = new ItemReplacer(collectionView);
            var mover    = new ItemMover(collectionView);
            var inserter = new ItemInserter(collectionView);

            layout.Children.Add(generator);

            layout.Children.Add(remover);
            Grid.SetRow(remover, 1);

            layout.Children.Add(adder);
            Grid.SetRow(adder, 2);

            layout.Children.Add(replacer);
            Grid.SetRow(replacer, 3);

            layout.Children.Add(mover);
            Grid.SetRow(mover, 4);

            layout.Children.Add(inserter);
            Grid.SetRow(inserter, 5);

            layout.Children.Add(collectionView);
            Grid.SetRow(collectionView, 6);

            Content = layout;

            if (addItemsWithTimer)
            {
                generator.GenerateEmptyObservableCollectionAndAddItemsEverySecond();
            }
            else
            {
                generator.GenerateItems();
            }
        }
Beispiel #2
0
        public CarouselCodeGallery(ItemsLayoutOrientation orientation)
        {
            On <iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never);

            _scrollInfoLabel.MaxLines      = 1;
            _scrollInfoLabel.LineBreakMode = LineBreakMode.TailTruncation;
            _orientation = orientation;

            Title = $"CarouselView (Code, {orientation})";

            var nItems = 5;
            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                }
            };
            var itemsLayout =
                new LinearItemsLayout(orientation)
            {
                SnapPointsType      = SnapPointsType.MandatorySingle,
                SnapPointsAlignment = SnapPointsAlignment.Center
            };

            var itemTemplate = ExampleTemplates.CarouselTemplate();

            var carouselView = new CarouselView
            {
                ItemsLayout  = itemsLayout,
                ItemTemplate = itemTemplate,
                Position     = 2,
                //NumberOfSideItems = 1,
                Margin          = new Thickness(0, 10, 0, 40),
                BackgroundColor = Color.LightGray,
                AutomationId    = "TheCarouselView"
            };

            if (orientation == ItemsLayoutOrientation.Horizontal)
            {
                carouselView.PeekAreaInsets = new Thickness(30, 0, 30, 0);
            }
            else
            {
                carouselView.PeekAreaInsets = new Thickness(0, 30, 0, 30);
            }

            carouselView.Scrolled += CarouselView_Scrolled;

            layout.Children.Add(carouselView);

            StackLayout stacklayoutInfo = GetReadOnlyInfo(carouselView);

            var generator = new ItemsSourceGenerator(carouselView, initialItems: nItems, itemsSourceType: ItemsSourceType.ObservableCollection);

            layout.Children.Add(generator);

            var positionControl = new PositionControl(carouselView, nItems);

            layout.Children.Add(positionControl);

            var spacingModifier = new SpacingModifier(carouselView.ItemsLayout, "Update Spacing");

            layout.Children.Add(spacingModifier);

            layout.Children.Add(stacklayoutInfo);

            var stckPeek = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckPeek.Children.Add(new Label {
                Text = "Peek"
            });
            var padi = new Slider
            {
                Maximum         = 100,
                Minimum         = 0,
                Value           = 30,
                WidthRequest    = 100,
                BackgroundColor = Color.Pink
            };

            padi.ValueChanged += (s, e) => {
                var peek = padi.Value;

                if (orientation == ItemsLayoutOrientation.Horizontal)
                {
                    carouselView.PeekAreaInsets = new Thickness(peek, 0, peek, 0);
                }
                else
                {
                    carouselView.PeekAreaInsets = new Thickness(0, peek, 0, peek);
                }
            };

            stckPeek.Children.Add(padi);
            stacklayoutInfo.Children.Add(stckPeek);
            stacklayoutInfo.Children.Add(_scrollInfoLabel);

            Grid.SetRow(positionControl, 1);
            Grid.SetRow(stacklayoutInfo, 2);
            Grid.SetRow(spacingModifier, 3);
            Grid.SetRow(carouselView, 4);

            Content = layout;
            generator.CollectionChanged += (sender, e) => {
                positionControl.UpdatePositionCount(generator.Count);
            };

            generator.GenerateItems();
        }
Beispiel #3
0
        public CarouselCodeGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Horizontal)
        {
            //On<iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never);

            _scrollInfoLabel.MaxLines      = 1;
            _scrollInfoLabel.LineBreakMode = LineBreakMode.TailTruncation;
            _orientation = orientation;

            Title = $"CarouselView (Code, {orientation})";

            var nItems = 5;
            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                }
            };
            var itemsLayout =
                new LinearItemsLayout(orientation)
            {
                SnapPointsType      = SnapPointsType.MandatorySingle,
                SnapPointsAlignment = SnapPointsAlignment.Center
            };

            var itemTemplate = ExampleTemplates.CarouselTemplate();

            var carouselView = new CarouselView
            {
                ItemsLayout     = itemsLayout,
                ItemTemplate    = itemTemplate,
                Margin          = new Thickness(0, 10, 0, 10),
                BackgroundColor = Colors.Red,
                AutomationId    = "TheCarouselView",
                //Loop = false
            };

            if (orientation == ItemsLayoutOrientation.Horizontal)
            {
                carouselView.PeekAreaInsets = new Thickness(30, 0, 30, 0);
            }
            else
            {
                carouselView.PeekAreaInsets = new Thickness(0, 30, 0, 30);
            }

            carouselView.Scrolled += CarouselViewScrolled;

            StackLayout StackLayoutInfo = GetReadOnlyInfo(carouselView);

            var generator = new ItemsSourceGenerator(carouselView, initialItems: nItems, itemsSourceType: ItemsSourceType.ObservableCollection);

            var positionControl = new PositionControl(carouselView, nItems);

            var spacingModifier = new SpacingModifier(carouselView.ItemsLayout, "Update Spacing");

            var stckPeek = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckPeek.Children.Add(new Label {
                Text = "Peek"
            });
            var padi = new Microsoft.Maui.Controls.Slider
            {
                Maximum         = 100,
                Minimum         = 0,
                Value           = 30,
                WidthRequest    = 100,
                BackgroundColor = Colors.Pink
            };

            padi.ValueChanged += (s, e) =>
            {
                var peek = padi.Value;

                if (orientation == ItemsLayoutOrientation.Horizontal)
                {
                    carouselView.PeekAreaInsets = new Thickness(peek, 0, peek, 0);
                }
                else
                {
                    carouselView.PeekAreaInsets = new Thickness(0, peek, 0, peek);
                }
            };

            stckPeek.Children.Add(padi);

            var content = new Grid();

            content.Children.Add(carouselView);

#if DEBUG
            // Uncomment this line to add a helper to visualize the center of each element.
            //content.Children.Add(CreateDebuggerLines());
#endif
            layout.Children.Add(generator);
            layout.Children.Add(positionControl);
            layout.Children.Add(StackLayoutInfo);
            layout.Children.Add(stckPeek);
            layout.Children.Add(spacingModifier);
            layout.Children.Add(_scrollInfoLabel);
            layout.Children.Add(content);

            Grid.SetRow(positionControl, 1);
            Grid.SetRow(StackLayoutInfo, 2);
            Grid.SetRow(stckPeek, 3);
            Grid.SetRow(spacingModifier, 4);
            Grid.SetRow(_scrollInfoLabel, 5);
            Grid.SetRow(content, 6);

            Content = layout;
            generator.CollectionChanged += (sender, e) =>
            {
                positionControl.UpdatePositionCount(generator.Count);
            };

            generator.GenerateItems();
            positionControl.UpdatePosition(1);
        }
        public ObservableCodeCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
                                                   bool grid = true)
        {
            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                }
            };

            IItemsLayout itemsLayout = grid
                                ? new GridItemsLayout(3, orientation)
                                : new ListItemsLayout(orientation) as IItemsLayout;

            var itemTemplate = ExampleTemplates.PhotoTemplate();

            var collectionView = new CollectionView {
                ItemsLayout = itemsLayout, ItemTemplate = itemTemplate
            };

            var generator = new ItemsSourceGenerator(collectionView);

            var remover  = new ItemRemover(collectionView);
            var adder    = new ItemAdder(collectionView);
            var replacer = new ItemReplacer(collectionView);
            var mover    = new ItemMover(collectionView);

            layout.Children.Add(generator);

            layout.Children.Add(remover);
            Grid.SetRow(remover, 1);

            layout.Children.Add(adder);
            Grid.SetRow(adder, 2);

            layout.Children.Add(replacer);
            Grid.SetRow(replacer, 3);

            layout.Children.Add(mover);
            Grid.SetRow(mover, 4);

            layout.Children.Add(collectionView);
            Grid.SetRow(collectionView, 5);

            Content = layout;

            generator.GenerateObservableCollection();
        }
        public SnapPointsCodeGallery(ItemsLayout itemsLayout)
        {
            Title = $"Snap Points (Code, {itemsLayout})";

            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                }
            };

            itemsLayout.SnapPointsAlignment = SnapPointsAlignment.Start;
            itemsLayout.SnapPointsType      = SnapPointsType.None;

            var itemTemplate = ExampleTemplates.SnapPointsTemplate();

            var collectionView = new CollectionView
            {
                ItemsLayout  = itemsLayout,
                ItemTemplate = itemTemplate,
            };

            var generator = new ItemsSourceGenerator(collectionView, initialItems: 50);

            var snapPointsTypeSelector = new EnumSelector <SnapPointsType>(() => itemsLayout.SnapPointsType,
                                                                           type => itemsLayout.SnapPointsType = type);

            var snapPointsAlignmentSelector = new EnumSelector <SnapPointsAlignment>(() => itemsLayout.SnapPointsAlignment,
                                                                                     type => itemsLayout.SnapPointsAlignment = type);

            var flowDirectionSelector = new EnumSelector <FlowDirection>(() => layout.FlowDirection,
                                                                         type => layout.FlowDirection = type);

            layout.Children.Add(generator);
            layout.Children.Add(snapPointsTypeSelector);
            layout.Children.Add(snapPointsAlignmentSelector);
            layout.Children.Add(flowDirectionSelector);
            layout.Children.Add(collectionView);

            Grid.SetRow(snapPointsTypeSelector, 1);
            Grid.SetRow(snapPointsAlignmentSelector, 2);
            Grid.SetRow(flowDirectionSelector, 3);
            Grid.SetRow(collectionView, 4);

            Content = layout;

            generator.GenerateItems();
        }
Beispiel #6
0
        public IndicatorCodeGallery()
        {
            Title = "IndicatorView Gallery";

            On <iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never);

            var nItems = 10;

            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    }
                }
            };

            var itemsLayout = new LinearItemsLayout(ItemsLayoutOrientation.Horizontal)
            {
                SnapPointsType      = SnapPointsType.MandatorySingle,
                SnapPointsAlignment = SnapPointsAlignment.Center
            };

            var itemTemplate = ExampleTemplates.CarouselTemplate();

            _carouselView = new CarouselView
            {
                ItemsLayout     = itemsLayout,
                ItemTemplate    = itemTemplate,
                BackgroundColor = Color.LightGray,
                AutomationId    = "TheCarouselView"
            };

            layout.Children.Add(_carouselView);
            var generator = new ItemsSourceGenerator(_carouselView, nItems, ItemsSourceType.ObservableCollection);

            layout.Children.Add(generator);

            generator.GenerateItems();

            _carouselView.PropertyChanged += CarouselViewPropertyChanged;
            (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>).CollectionChanged += IndicatorCodeGalleryCollectionChanged;

            var indicatorView = new IndicatorView
            {
                HorizontalOptions      = LayoutOptions.Center,
                Margin                 = new Thickness(12, 6, 12, 12),
                IndicatorColor         = Color.Gray,
                SelectedIndicatorColor = Color.Black,
                IndicatorsShape        = IndicatorShape.Square,
                AutomationId           = "TheIndicatorView",
                Count = 5,
            };

            _carouselView.IndicatorView = indicatorView;

            layout.Children.Add(indicatorView);

            var stckColors = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckColors.Children.Add(new Label {
                VerticalOptions = LayoutOptions.Center, Text = "IndicatorColor"
            });

            var colors = new List <string>
            {
                "Black",
                "Blue",
                "Red"
            };

            var colorsPicker = new Picker
            {
                ItemsSource  = colors,
                WidthRequest = 150
            };

            colorsPicker.SelectedIndex = 0;

            colorsPicker.SelectedIndexChanged += (s, e) =>
            {
                var selectedIndex = colorsPicker.SelectedIndex;

                switch (selectedIndex)
                {
                case 0:
                    indicatorView.IndicatorColor = Color.Black;
                    break;

                case 1:
                    indicatorView.IndicatorColor = Color.Blue;
                    break;

                case 2:
                    indicatorView.IndicatorColor = Color.Red;
                    break;
                }
            };

            stckColors.Children.Add(colorsPicker);

            layout.Children.Add(stckColors);

            var stckTemplate = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckTemplate.Children.Add(new Label {
                VerticalOptions = LayoutOptions.Center, Text = "IndicatorTemplate"
            });

            var templates = new List <string>
            {
                "Circle",
                "Square",
                "Template"
            };

            var templatePicker = new Picker
            {
                ItemsSource  = templates,
                WidthRequest = 150,
                TextColor    = Color.Black
            };

            templatePicker.SelectedIndexChanged += (s, e) =>
            {
                var selectedIndex = templatePicker.SelectedIndex;

                switch (selectedIndex)
                {
                case 0:
                    indicatorView.IndicatorTemplate = null;
                    indicatorView.IndicatorsShape   = IndicatorShape.Circle;
                    break;

                case 1:
                    indicatorView.IndicatorTemplate = null;
                    indicatorView.IndicatorsShape   = IndicatorShape.Square;
                    break;

                case 2:
                    indicatorView.IndicatorTemplate = ExampleTemplates.IndicatorTemplate();
                    break;
                }
            };

            templatePicker.SelectedIndex = 0;

            stckTemplate.Children.Add(templatePicker);

            layout.Children.Add(stckTemplate);

            var stckSize = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckSize.Children.Add(new Label {
                VerticalOptions = LayoutOptions.Center, Text = "Indicator Size"
            });

            //indicatorView.IndicatorSize = 25;

            var sizeSlider = new Slider
            {
                WidthRequest = 150,
                Value        = indicatorView.IndicatorSize,
                Maximum      = 50,
            };

            sizeSlider.ValueChanged += (s, e) =>
            {
                var indicatorSize = sizeSlider.Value;
                indicatorView.IndicatorSize = indicatorSize;
            };

            stckSize.Children.Add(sizeSlider);

            layout.Children.Add(stckSize);

            Grid.SetRow(generator, 0);
            Grid.SetRow(stckColors, 1);
            Grid.SetRow(stckTemplate, 2);
            Grid.SetRow(stckSize, 3);
            Grid.SetRow(_carouselView, 4);
            Grid.SetRow(indicatorView, 6);

            var layoutBtn = new StackLayout
            {
                Orientation       = StackOrientation.Horizontal,
                HorizontalOptions = LayoutOptions.Center,
            };

            var btnRemove = new Button
            {
                Text            = "DEL First",
                FontSize        = 8,
                AutomationId    = "btnRemoveFirst",
                BackgroundColor = Color.LightGray,
                Padding         = new Thickness(5),
                Command         = new Command(() =>
                {
                    var items = (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>);
                    items.Remove(items[0]);
                })
            };

            _btnPrev = new Button
            {
                Text            = "Prev",
                FontSize        = 8,
                AutomationId    = "btnPrev",
                BackgroundColor = Color.LightGray,
                Padding         = new Thickness(5),
                Command         = new Command(() =>
                {
                    _carouselView.Position--;
                }, () =>
                {
                    return(_carouselView.Position > 0);
                })
            };

            _btnNext = new Button
            {
                Text            = "Next",
                FontSize        = 8,
                AutomationId    = "btnNext",
                BackgroundColor = Color.LightGray,
                Padding         = new Thickness(5),
                Command         = new Command(() =>
                {
                    _carouselView.Position++;
                }, () =>
                {
                    var items = (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>);
                    return(_carouselView.Position < items.Count - 1);
                })
            };

            var btnRemoveLast = new Button
            {
                Text            = "DEL Last",
                FontSize        = 8,
                AutomationId    = "btnRemoveLast",
                BackgroundColor = Color.LightGray,
                Padding         = new Thickness(5),
                Command         = new Command(() =>
                {
                    var items         = (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>);
                    var indexToRemove = items.Count - 1;
                    items.Remove(items[indexToRemove]);
                })
            };

            layoutBtn.Children.Add(btnRemove);
            layoutBtn.Children.Add(_btnPrev);
            layoutBtn.Children.Add(_btnNext);
            layoutBtn.Children.Add(btnRemoveLast);

            layout.Children.Add(layoutBtn);
            Grid.SetRow(layoutBtn, 5);
            Content = layout;
        }
Beispiel #7
0
        public PropagateCodeGallery(IItemsLayout itemsLayout, int itemsCount = 2)
        {
            Title = $"Propagate FlowDirection=RTL";

            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                },
                FlowDirection = FlowDirection.RightToLeft,
                Visual        = VisualMarker.Material
            };

            var itemTemplate = ExampleTemplates.PropagationTemplate();

            var emptyView = ExampleTemplates.PropagationTemplate().CreateContent() as View;


            var collectionView = new CollectionView
            {
                ItemsLayout  = itemsLayout,
                ItemTemplate = itemTemplate,
                EmptyView    = emptyView
            };

            var generator = new ItemsSourceGenerator(collectionView, initialItems: itemsCount);

            layout.Children.Add(generator);
            var instructions = new Label();

            UpdateInstructions(layout, instructions, itemsCount == 0);
            Grid.SetRow(instructions, 2);
            layout.Children.Add(instructions);

            var switchLabel = new Label {
                Text = "Toggle FlowDirection"
            };
            var switchLayout = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };
            var updateSwitch = new Switch {
            };

            updateSwitch.Toggled += (sender, args) =>
            {
                layout.FlowDirection = layout.FlowDirection == FlowDirection.RightToLeft
                                        ? FlowDirection.LeftToRight
                                        : FlowDirection.RightToLeft;

                UpdateInstructions(layout, instructions, itemsCount == 0);
            };

            switchLayout.Children.Add(switchLabel);
            switchLayout.Children.Add(updateSwitch);

            Grid.SetRow(switchLayout, 1);
            layout.Children.Add(switchLayout);

            layout.Children.Add(collectionView);

            Grid.SetRow(collectionView, 3);

            Content = layout;

            generator.GenerateItems();
        }
Beispiel #8
0
        public UngroupedReorderingGallery(IItemsLayout itemsLayout)
        {
            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    }
                }
            };

            var reorderCompletedLabel = new Label
            {
                Text = "ReorderCompleted (event): NA",
            };

            var itemTemplate = ExampleTemplates.SpacingTemplate();

            var collectionView = new CollectionView
            {
                ItemsLayout     = itemsLayout,
                ItemTemplate    = itemTemplate,
                AutomationId    = "collectionview",
                CanReorderItems = true
            };

            collectionView.ReorderCompleted += (sender, e) => reorderCompletedLabel.Text = $"ReorderCompleted (event): {DateTime.Now}";

            var generator = new ItemsSourceGenerator(collectionView, initialItems: 20, itemsSourceType: ItemsSourceType.ObservableCollection);

            var itemsSourceTypeSelector = new EnumSelector <ItemsSourceType>(() => generator.ItemsSourceType, sourceType => UpdateItemsSourceType(generator, sourceType, collectionView));

            var spacingModifier = new SpacingModifier(collectionView.ItemsLayout, "Update_Spacing");

            var reloadButton = new Button {
                Text = "Reload Current Source", AutomationId = "btnReload", HorizontalOptions = LayoutOptions.Start
            };

            reloadButton.Clicked += (sender, e) => ReloadItemsSource(collectionView);

            layout.Children.Add(generator);
            layout.Children.Add(itemsSourceTypeSelector);
            layout.Children.Add(spacingModifier);
            layout.Children.Add(reorderCompletedLabel);
            layout.Children.Add(reloadButton);
            layout.Children.Add(collectionView);

            Grid.SetRow(itemsSourceTypeSelector, 1);
            Grid.SetRow(spacingModifier, 2);
            Grid.SetRow(reorderCompletedLabel, 3);
            Grid.SetRow(reloadButton, 4);
            Grid.SetRow(collectionView, 5);

            Content = layout;

            generator.GenerateItems();
        }
Beispiel #9
0
        public IndicatorCodeGallery()
        {
            Title = "IndicatorView Gallery";

            On <iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never);

            var nItems = 10;

            var layout = new Grid
            {
                RowDefinitions = new RowDefinitionCollection
                {
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    },
                    new RowDefinition {
                        Height = GridLength.Star
                    },
                    new RowDefinition {
                        Height = GridLength.Auto
                    }
                }
            };

            var itemsLayout = new LinearItemsLayout(ItemsLayoutOrientation.Horizontal)
            {
                SnapPointsType      = SnapPointsType.MandatorySingle,
                SnapPointsAlignment = SnapPointsAlignment.Center
            };

            var itemTemplate = ExampleTemplates.CarouselTemplate();

            var carouselView = new CarouselView
            {
                ItemsLayout     = itemsLayout,
                ItemTemplate    = itemTemplate,
                BackgroundColor = Color.LightGray,
                AutomationId    = "TheCarouselView"
            };

            layout.Children.Add(carouselView);

            var generator = new ItemsSourceGenerator(carouselView, nItems, ItemsSourceType.ObservableCollection, false);

            layout.Children.Add(generator);

            generator.GenerateItems();

            var indicatorView = new IndicatorView
            {
                HorizontalOptions      = LayoutOptions.Center,
                Margin                 = new Thickness(12, 6, 12, 24),
                IndicatorColor         = Color.Gray,
                SelectedIndicatorColor = Color.Black,
                IndicatorsShape        = IndicatorShape.Square,
                AutomationId           = "TheIndicatorView"
            };

            IndicatorView.SetItemsSourceBy(indicatorView, carouselView);

            layout.Children.Add(indicatorView);

            var stckMaxVisible = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckMaxVisible.Children.Add(new Label {
                VerticalOptions = LayoutOptions.Center, Text = "MaximumVisible"
            });
            var maxVisibleSlider = new Slider
            {
                Maximum         = nItems,
                Minimum         = 0,
                Value           = nItems,
                WidthRequest    = 150,
                BackgroundColor = Color.Pink
            };

            stckMaxVisible.Children.Add(maxVisibleSlider);

            maxVisibleSlider.ValueChanged += (s, e) =>
            {
                var maximumVisible = (int)maxVisibleSlider.Value;
                indicatorView.MaximumVisible = maximumVisible;
            };

            layout.Children.Add(stckMaxVisible);

            var stckColors = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckColors.Children.Add(new Label {
                VerticalOptions = LayoutOptions.Center, Text = "IndicatorColor"
            });

            var colors = new List <string>
            {
                "Black",
                "Blue",
                "Red"
            };

            var colorsPicker = new Picker
            {
                ItemsSource  = colors,
                WidthRequest = 150
            };

            colorsPicker.SelectedIndex = 0;

            colorsPicker.SelectedIndexChanged += (s, e) =>
            {
                var selectedIndex = colorsPicker.SelectedIndex;

                switch (selectedIndex)
                {
                case 0:
                    indicatorView.IndicatorColor = Color.Black;
                    break;

                case 1:
                    indicatorView.IndicatorColor = Color.Blue;
                    break;

                case 2:
                    indicatorView.IndicatorColor = Color.Red;
                    break;
                }
            };

            stckColors.Children.Add(colorsPicker);

            layout.Children.Add(stckColors);

            var stckTemplate = new StackLayout {
                Orientation = StackOrientation.Horizontal
            };

            stckTemplate.Children.Add(new Label {
                VerticalOptions = LayoutOptions.Center, Text = "IndicatorTemplate"
            });

            var templates = new List <string>
            {
                "Circle",
                "Square",
                "Template"
            };

            var templatePicker = new Picker
            {
                ItemsSource  = templates,
                WidthRequest = 150,
                TextColor    = Color.Black
            };

            templatePicker.SelectedIndexChanged += (s, e) =>
            {
                var selectedIndex = templatePicker.SelectedIndex;

                switch (selectedIndex)
                {
                case 0:
                    indicatorView.IndicatorTemplate = null;
                    indicatorView.IndicatorsShape   = IndicatorShape.Circle;
                    break;

                case 1:
                    indicatorView.IndicatorTemplate = null;
                    indicatorView.IndicatorsShape   = IndicatorShape.Square;
                    break;

                case 2:
                    indicatorView.IndicatorTemplate = ExampleTemplates.IndicatorTemplate();
                    break;
                }
            };

            templatePicker.SelectedIndex = 0;

            stckTemplate.Children.Add(templatePicker);

            layout.Children.Add(stckTemplate);

            Grid.SetRow(generator, 0);
            Grid.SetRow(stckMaxVisible, 1);
            Grid.SetRow(stckColors, 2);
            Grid.SetRow(stckTemplate, 3);
            Grid.SetRow(carouselView, 4);
            Grid.SetRow(indicatorView, 5);

            Content = layout;

            generator.CollectionChanged += (sender, e) =>
            {
                maxVisibleSlider.Maximum = generator.Count;
            };
        }