public VariableSizeTemplateGridGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical)
{
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
}
}
};
var itemsLayout = new GridItemsLayout(2, orientation);
var itemTemplate = ExampleTemplates.VariableSizeTemplate();
var collectionView = new CollectionView
{
ItemsLayout = itemsLayout,
ItemTemplate = itemTemplate,
ItemSizingStrategy = ItemSizingStrategy.MeasureFirstItem
};
var generator = new ItemsSourceGenerator(collectionView, 100);
var explanation = new Label();
UpdateExplanation(explanation, collectionView.ItemSizingStrategy);
var sizingStrategySelector = new EnumSelector <ItemSizingStrategy>(() => collectionView.ItemSizingStrategy,
mode =>
{
collectionView.ItemSizingStrategy = mode;
UpdateExplanation(explanation, collectionView.ItemSizingStrategy);
});
layout.Children.Add(generator);
layout.Children.Add(sizingStrategySelector);
Grid.SetRow(sizingStrategySelector, 1);
layout.Children.Add(explanation);
Grid.SetRow(explanation, 2);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 3);
Content = layout;
generator.GenerateItems();
}