async void UpdateSource()
{
ImageSource source = Element.Source;
(Element as IImageController)?.SetIsLoading(true);
if (Control != null)
{
bool success;
if (source is FileImageSource fis)
{
success = _image.LoadFromFile(fis.File);
}
else
{
success = await _image.LoadFromImageSourceAsync(source);
}
if (!IsDisposed && success)
{
(Element as IVisualElementController)?.NativeSizeChanged();
UpdateAfterLoading();
}
}
if (!IsDisposed)
{
((IImageController)Element).SetIsLoading(false);
}
}
protected override EvasObject OnGetContent(Cell cell, string part)
{
if (part == ImagePart)
{
var imgCell = cell as ImageCell;
int pixelSize = Forms.ConvertToScaledPixel(imgCell.RenderHeight);
if (pixelSize <= 0)
{
pixelSize = this.GetDefaultHeightPixel();
}
var image = new Native.Image(Forms.NativeParent)
{
MinimumWidth = pixelSize,
MinimumHeight = pixelSize
};
image.SetAlignment(-1.0, -1.0); // fill
image.SetWeight(1.0, 1.0); // expand
var task = image.LoadFromImageSourceAsync(imgCell.ImageSource);
return(image);
}
else
{
return(null);
}
}
EvasObject GetImageIcon(EvasObject parent)
{
var image = new Native.Image(parent);
_ = image.LoadFromImageSourceAsync(s_currentDragStateData.DataPackage.Image);
return(image);
}
void Initialize(EvasObject parent)
{
_menu = new GenList(parent)
{
BackgroundColor = EColor.Transparent,
Style = "solid/default",
};
_menu.ItemSelected += (s, e) =>
{
_flyoutMenu.TryGetValue(e.Item.Data as Item, out Element element);
SelectedItemChanged?.Invoke(this, new SelectedItemChangedEventArgs(element, -1));
};
_menu.Show();
PackEnd(_menu);
_defaultClass = new GenItemClass("double_label")
{
GetTextHandler = (obj, part) =>
{
if (part == "elm.text")
{
return(((Item)obj).Title);
}
else
{
return(null);
}
},
GetContentHandler = (obj, part) =>
{
if (part == "elm.swallow.icon")
{
var icon = ((Item)obj).Icon;
if (icon != null)
{
var image = new Native.Image(parent)
{
MinimumWidth = Forms.ConvertToScaledPixel(24),
MinimumHeight = Forms.ConvertToScaledPixel(24)
};
var result = image.LoadFromImageSourceAsync(icon);
return(image);
}
else
{
return(null);
}
}
else
{
return(null);
}
}
};
}
Native.Image GetSearchHandlerIcon(ImageSource source)
{
Native.Image _icon = new Native.Image(Forms.NativeParent);
if (source != null)
{
var task = _icon.LoadFromImageSourceAsync(source);
}
return(_icon);
}
void InitializeTabsItem(EToolbarItem item, string resource)
{
//The source of icon resources is https://materialdesignicons.com/
ImageSource src = ImageSource.FromResource(resource, typeof(ShellItemRenderer).GetTypeInfo().Assembly);
Native.Image icon = new Native.Image(Forms.NativeParent);
var task = icon.LoadFromImageSourceAsync(src);
item.SetPartContent("elm.swallow.icon", icon);
item.SetPartColor("bg", _backgroudColor);
item.SetPartColor("underline", EColor.Transparent);
}
Native.Button GetToolbarButton(ToolbarButtonPosition position)
{
ToolbarItem item = _toolbarTracker.ToolbarItems.Where(
i => (position == ToolbarButtonPosition.Right && i.Order <= ToolbarItemOrder.Primary) ||
(position == ToolbarButtonPosition.Left && i.Order == ToolbarItemOrder.Secondary))
.OrderBy(i => i.Priority).FirstOrDefault();
if (item == default(ToolbarItem))
{
return(null);
}
Native.Button button = new Native.Button(Forms.NativeParent);
button.Clicked += (s, e) =>
{
IMenuItemController control = item;
control.Activate();
};
button.Text = item.Text;
button.BackgroundColor = Color.Transparent.ToNative();
if (string.IsNullOrEmpty(item.Icon))
{
if (string.IsNullOrEmpty(item.Text))
{
// We assumed the default toolbar icon is "naviframe/drawer" if there are no icon and text.
button.Style = StyleDefaultToolbarIcon;
}
else
{
if (position == ToolbarButtonPosition.Right)
{
button.Style = StyleRightToolbarButton;
}
else
{
button.Style = StyleLeftToolBarButton;
}
}
}
else
{
Native.Image iconImage = new Native.Image(Forms.NativeParent);
var task = iconImage.LoadFromImageSourceAsync(item.Icon);
button.Image = iconImage;
}
return(button);
}
void CreateMoreToolbarItem()
{
if (_moreToolbarItem != null)
{
return;
}
//The source of icon resources is https://materialdesignicons.com/
ImageSource src = ImageSource.FromResource("Xamarin.Forms.Platform.Tizen.Resource.dots_horizontal.png", typeof(ShellItemRenderer).GetTypeInfo().Assembly);
Native.Image icon = new Native.Image(Forms.NativeParent);
var task = icon.LoadFromImageSourceAsync(src);
_moreToolbarItem = _toolbar.Append("More", null);
_moreToolbarItem.SetPartContent("elm.swallow.icon", icon);
_moreToolbarItem.SetPartColor("bg", _backgroudColor);
_moreToolbarItem.SetPartColor("underline", EColor.Transparent);
_toolbarItemList.AddLast(_moreToolbarItem);
}
EvasObject GetContent(object data, string part)
{
ShellSection section = data as ShellSection;
var box = new Native.Box(Forms.NativeParent);
box.Show();
var icon = new Native.Image(Forms.NativeParent)
{
MinimumWidth = Forms.ConvertToScaledPixel(44),
MinimumHeight = Forms.ConvertToScaledPixel(27)
};
var task = icon.LoadFromImageSourceAsync(section.Icon);
icon.Show();
var title = new Native.Label(Forms.NativeParent)
{
Text = section.Title,
FontSize = Forms.ConvertToEflFontPoint(14),
HorizontalTextAlignment = Native.TextAlignment.Start,
VerticalTextAlignment = Native.TextAlignment.Center
};
title.Show();
box.PackEnd(icon);
box.PackEnd(title);
box.LayoutUpdated += (object sender, LayoutEventArgs e) =>
{
icon.Move(e.Geometry.X + _iconPadding, e.Geometry.Y + _iconPadding);
icon.Resize(_iconSize, _iconSize);
title.Move(e.Geometry.X + 2 * _iconPadding + _iconSize, e.Geometry.Y);
title.Resize(e.Geometry.Width - (2 * _iconPadding + _iconSize), e.Geometry.Height);
};
box.MinimumHeight = _cellHeight;
return(box);
}
async void UpdateMenuIcon()
{
string file = _hasBackButton ? _backIcon : _menuIcon;
ImageSource source = ImageSource.FromResource(file, typeof(ShellNavBar).GetTypeInfo().Assembly);
bool ret = await _menu.LoadFromImageSourceAsync(source);
}