protected override bool OnBackButtonPressed()
{
if (mode == GalleryMode.Selection)
{
foreach (var img in selectedItems)
{
img.IsSelected = false;
}
selectedItems.Clear();
mode = GalleryMode.Normal;
MakeOptionsVisible();
UpdateTitle();
return(true);
}
return(false);
}
public GalleryPage()
{
NavigationPage.SetHasNavigationBar(this, false);
InitializeComponent();
selectedItems = new List <ImageDisplay>();
mode = GalleryMode.Normal;
//Title = "Gallery";
deleteOption = new ToolbarItem("Delete", "", new Action(() => { DeleteSelectedImage(); }), ToolbarItemOrder.Primary, 0);
view = new StackLayout();
scrollView = new ScrollView
{
Orientation = ScrollOrientation.Vertical
};
Update();
this.InitialLoad();
}
private void SetView()
{
view.Children.Clear();
foreach (var i in foodDiary)
{
DateTime date = i.Key;
List <FoodItem> foods = i.Value;
Label dateLabel = new Label
{
Text = date.ToLongDateString(),
TextColor = Color.Gray,
FontSize = 15,
HorizontalOptions = LayoutOptions.StartAndExpand,
Margin = new Thickness(5, 10, 0, 0)
};
Grid imageGrid = new Grid
{
ColumnDefinitions =
{
new ColumnDefinition {
Width = new GridLength(App.ScreenWidth / 4, GridUnitType.Absolute)
},
new ColumnDefinition {
Width = new GridLength(App.ScreenWidth / 4, GridUnitType.Absolute)
},
new ColumnDefinition {
Width = new GridLength(App.ScreenWidth / 4, GridUnitType.Absolute)
},
new ColumnDefinition {
Width = new GridLength(App.ScreenWidth / 4, GridUnitType.Absolute)
}
},
VerticalOptions = LayoutOptions.Start,
HorizontalOptions = LayoutOptions.Start
};
List <ImageDisplay> images = new List <ImageDisplay>();
foreach (var food in foods)
{
byte[] thumbnail = DeserializeStringToByteArray(food.IMGBYTES);
if (thumbnail != null)
{
ImageDisplay bmp = new ImageDisplay
{
ImageByte = thumbnail,
BackgroundColor = Color.White,
WidthRequest = App.ScreenWidth / 4,
HeightRequest = App.ScreenWidth / 4,
Margin = new Thickness(0, 0, 0, 0),
Aspect = Aspect.AspectFill,
DatabaseItem = food
};
bmp.OnTouch = new Command((p) =>
{
Console.WriteLine("LongClick");
if (mode == SelfControl.Helpers.GlobalVariables.GalleryMode.Normal)
{
mode = SelfControl.Helpers.GlobalVariables.GalleryMode.Selection;
MakeOptionsVisible();
}
bmp.IsSelected = !bmp.IsSelected;
if (bmp.IsSelected)
{
selectedItems.Add(bmp);
UpdateTitle();
}
else
{
selectedItems.Remove(bmp);
UpdateTitle();
}
});
bmp.OnClick = new Command((p) =>
{
if (mode == SelfControl.Helpers.GlobalVariables.GalleryMode.Selection)
{
bmp.IsSelected = !bmp.IsSelected;
if (bmp.IsSelected)
{
selectedItems.Add(bmp);
UpdateTitle();
}
else
{
selectedItems.Remove(bmp);
UpdateTitle();
}
}
else
{
NagivateImageViewer(bmp.DatabaseItem);
}
});
images.Add(bmp);
}
}
fillGrid(imageGrid, images);
view.Children.Add(dateLabel);
view.Children.Add(imageGrid);
}
var reviewButton = new Button
{
Text = "Review Your Meals",
BorderWidth = 1,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
};
reviewButton.Clicked += OnReviewButtonClicked;
view.Children.Add(reviewButton);
}
