public void AddDropdownItem(NavMenuItemData item)
{
if (_dropdownItems == null)
{
_dropdownItems = new ObservableCollection <NavMenuItemData>();
}
_dropdownItems.Add(item);
}
public static void ResetIsSelectedFlag(this NavMenuItemData data)
{
data.IsSelected = false;
if (data.DropdownItems == null)
{
return;
}
foreach (var el in data.DropdownItems)
{
el.ResetIsSelectedFlag();
}
}
private void RaiseClickedEvent(NavMenuItemData item)
{
RaiseEvent(new ClickedEventArgs(ClickedEvent, item));
}
private void NavMenu_Click(object sender, ClickedEventArgs e)
{
LastClickedItem = e.ClickedItem;
RaiseClickedEvent(e.ClickedItem);
}
private void CreateNavMenuItem(NavMenuItemData item, Panel toAdd, int offset = 0)
{
#region создание самого элемента
DockPanel dock = new DockPanel()
{
Height = ItemHeight,
Background = new SolidColorBrush(item.IsSelected ? SelectedItemBackground : Background)
};
Image icon = null;
try
{
icon = new Image()
{
Height = IconSize,
Width = IconSize,
Margin = new Thickness((DropdownIconSectionWidth - IconSize) / 2 + offset, (ItemHeight - IconSize) / 2, (DropdownIconSectionWidth - IconSize) / 2, (ItemHeight - IconSize) / 2),
Source = new BitmapImage(item.ImageSource)
};
DockPanel.SetDock(icon, Dock.Left);
dock.Children.Add(icon);
}
catch { }
TextBlock text = new TextBlock()
{
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Left,
Text = item.Text,
Foreground = item.IsSelected ? new SolidColorBrush(SelectedItemTextColor) : new SolidColorBrush(ItemTextColor),
FontFamily = ItemTextFontFamily,
FontSize = ItemTextFontSize,
FontWeight = ItemTextFontWeight,
Margin = new Thickness(0, 0, (ItemHeight - ItemTextFontSize) / 2, 0)
};
DockPanel.SetDock(text, Dock.Left);
dock.Children.Add(text);
ColorAnimation mouseEnterAnimation = new ColorAnimation()
{
From = item.IsSelected ? SelectedItemBackground : Background,
To = MouseInItemBackground,
Duration = MouseInOverAnimationDuration
};
ColorAnimation mouseEnterTextAnimation = new ColorAnimation()
{
From = item.IsSelected ? SelectedItemTextColor : ItemTextColor,
To = MouseInItemTextColor,
Duration = MouseInOverAnimationDuration
};
dock.MouseEnter += (object sender, MouseEventArgs e) =>
{
if (!this.IsEnabled)
{
return;
}
dock.Background.BeginAnimation(SolidColorBrush.ColorProperty, mouseEnterAnimation);
text.Foreground.BeginAnimation(SolidColorBrush.ColorProperty, mouseEnterTextAnimation);
};
ColorAnimation mouseLeaveAnimation = new ColorAnimation()
{
From = MouseInItemBackground,
To = item.IsSelected ? SelectedItemBackground : Background,
Duration = MouseInOverAnimationDuration
};
ColorAnimation mouseLeaveTextAnimation = new ColorAnimation()
{
To = item.IsSelected ? SelectedItemTextColor : ItemTextColor,
From = MouseInItemTextColor,
Duration = MouseInOverAnimationDuration
};
dock.MouseLeave += (object sender, MouseEventArgs e) =>
{
if (!this.IsEnabled)
{
return;
}
dock.Background.BeginAnimation(SolidColorBrush.ColorProperty, mouseLeaveAnimation);
text.Foreground.BeginAnimation(SolidColorBrush.ColorProperty, mouseLeaveTextAnimation);
};
MouseClickManager clickManager = new MouseClickManager(200, () => { return(this.IsEnabled); });
dock.MouseLeftButtonDown += clickManager.OnMouseLeftButtonDown;
dock.MouseLeftButtonUp += clickManager.OnMouseLeftButtonUp;
//обработчик кликов во вне
clickManager.Click += (object sender, MouseButtonEventArgs e) => { RaiseClickedEvent(item); };
item.PropertyChanged += (object sender, System.ComponentModel.PropertyChangedEventArgs e) =>
{
_context?.Post((s) =>
{
if (sender is NavMenuItemData data)
{
if (e.PropertyName == "ImageSource")
{
if (icon != null)
{
icon.Source = new BitmapImage(data.ImageSource);
}
}
if (e.PropertyName == "Text")
{
if (text != null)
{
text.Text = data.Text;
}
}
if (e.PropertyName == "IsSelected")
{
if (text != null)
{
text.Foreground = data.IsSelected ? new SolidColorBrush(SelectedItemTextColor) : new SolidColorBrush(ItemTextColor);
}
if (dock != null)
{
dock.Background = new SolidColorBrush(data.IsSelected ? SelectedItemBackground : Background);
}
if (mouseEnterAnimation != null)
{
mouseEnterAnimation.From = data.IsSelected ? SelectedItemBackground : Background;
}
if (mouseEnterTextAnimation != null)
{
mouseEnterTextAnimation.From = data.IsSelected ? SelectedItemTextColor : ItemTextColor;
}
if (mouseLeaveAnimation != null)
{
mouseLeaveAnimation.To = data.IsSelected ? SelectedItemBackground : Background;
}
if (mouseLeaveTextAnimation != null)
{
mouseLeaveTextAnimation.To = data.IsSelected ? SelectedItemTextColor : ItemTextColor;
}
}
}
}, null);
};
toAdd.Children.Add(dock);
#endregion
#region создание подменю
bool isAnimatedNow = false;
if (item.IsDropdownItem && item.DropdownItems != null)
{
Image dropdownIcon;
try
{
dropdownIcon = new Image()
{
Height = DropdownIconSize,
Width = DropdownIconSize,
Margin =
new Thickness((ItemHeight - DropdownIconSize) / 2.0 > DropdownIconMinLeftOffset ? (ItemHeight - DropdownIconSize) / 2.0 : DropdownIconMinLeftOffset,
(ItemHeight - DropdownIconSize) / 2,
(ItemHeight - DropdownIconSize) / 2,
(ItemHeight - DropdownIconSize) / 2),
HorizontalAlignment = HorizontalAlignment.Right,
Source = new BitmapImage(DropdownIconSource),
RenderTransform = new RotateTransform(0, DropdownIconSize / 2, DropdownIconSize / 2),
Name = "dropdownIcon"
};
DockPanel.SetDock(dropdownIcon, Dock.Right);
dock.Children.Add(dropdownIcon);
}
catch { }
DoubleAnimation rotateAnimation = new DoubleAnimation()
{
Duration = DropdownMenuAnimationDuration,
EasingFunction = DropdownMenuFunction,
};
StackPanel dropdownMenu = new StackPanel()
{
Orientation = Orientation.Vertical,
MaxHeight = 0
};
foreach (var el in item.DropdownItems)
{
CreateNavMenuItem(el, dropdownMenu, offset + DropdownMenuLeftOffset);
}
DoubleAnimation dropupAnimation = new DoubleAnimation()
{
Duration = DropdownMenuAnimationDuration,
EasingFunction = DropdownMenuFunction
};
DoubleAnimationUsingKeyFrames dropdownAnimation = new DoubleAnimationUsingKeyFrames();
dropdownAnimation.KeyFrames.Add(new EasingDoubleKeyFrame()
{
KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(0)), Value = 0, EasingFunction = DropdownMenuFunction
});
dropdownAnimation.KeyFrames.Add(new EasingDoubleKeyFrame()
{
KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(DropdownMenuAnimationDuration.Milliseconds - 1)), EasingFunction = DropdownMenuFunction
});
dropdownAnimation.KeyFrames.Add(new EasingDoubleKeyFrame()
{
KeyTime = KeyTime.FromTimeSpan(DropdownMenuAnimationDuration), Value = 100000
});
this.IsEnabledChanged += (object sender, DependencyPropertyChangedEventArgs e) =>
{
if (!(bool)e.NewValue && dropdownMenu.MaxHeight > 0)
{
dropupAnimation.From = dropdownMenu.RenderSize.Height;
dropupAnimation.To = 0;
dropdownMenu.BeginAnimation(Panel.MaxHeightProperty, dropupAnimation);
}
};
#region обработчик кликов для скрытия/раскрытия меню
rotateAnimation.Completed += (object sender, EventArgs e) => { isAnimatedNow = false; };
clickManager.Click += (object sender, MouseButtonEventArgs e) =>
{
if (!isAnimatedNow && (sender is Panel senderPanel))
{
if (senderPanel.Parent is Panel parentPanel)
{
var submenu = parentPanel.Children[parentPanel.Children.IndexOf(senderPanel) + 1];
if (submenu is Panel submenuPanel)
{
isAnimatedNow = true;
if (submenuPanel.MaxHeight <= 0.1)
{
rotateAnimation.From = 0;
rotateAnimation.To = 180;
dropdownAnimation.KeyFrames[1].Value = submenuPanel.RenderSize.Height;
submenuPanel.BeginAnimation(Panel.MaxHeightProperty, dropdownAnimation);
}
else
{
rotateAnimation.From = 180;
rotateAnimation.To = 360;
dropupAnimation.From = submenuPanel.RenderSize.Height;
dropupAnimation.To = 0;
submenuPanel.BeginAnimation(Panel.MaxHeightProperty, dropupAnimation);
}
if ((LogicalTreeHelper.FindLogicalNode(senderPanel, "dropdownIcon") is Image img) && (img.RenderTransform is RotateTransform transform))
{
transform.BeginAnimation(RotateTransform.AngleProperty, rotateAnimation);
}
}
}
}
};
#endregion
toAdd.Children.Add(dropdownMenu);
}
#endregion
}
