mirror of
https://github.com/Hofknecht/SystemTrayMenu.git
synced 2024-10-03 10:36:30 +13:00
121 lines
4.1 KiB
C#
121 lines
4.1 KiB
C#
// <copyright file="WPFExtensions.cs" company="PlaceholderCompany">
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// Copyright (c) PlaceholderCompany. All rights reserved.
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// </copyright>
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//
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// Copyright (c) 2022-2022 Peter Kirmeier
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namespace SystemTrayMenu.Utilities
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{
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using System;
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using System.Drawing;
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using System.Globalization;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using System.Windows.Threading;
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using Color = System.Windows.Media.Color;
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using Point = System.Windows.Point;
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internal static class WPFExtensions
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{
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internal static void HandleInvoke(this DispatcherObject instance, Action action)
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{
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if (instance!.CheckAccess())
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{
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action();
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}
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else
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{
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instance.Dispatcher.Invoke(action);
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}
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}
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internal static Window GetParentWindow(this ListView listView)
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{
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var parent = VisualTreeHelper.GetParent(listView);
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while (!(parent is Window))
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{
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parent = VisualTreeHelper.GetParent(parent);
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}
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return (Window)parent;
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}
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internal static int IndexOfSenderItem(this ListView listView, ListViewItem sender)
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{
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int index = listView.Items.IndexOf(sender.Content);
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if (index < 0)
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{
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// Most likely the sender object is a "DiconnectedItem"
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// Needs to be confirmed:
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// May happen when focus gets lost while event is handled
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// As this has not occurred on files but on folders
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// that spawns a new menu window which will get focus
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// it may be caused by the loss of focus.
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// Workaround:
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// If possible take index from selection
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// we simply assume it is the first one.
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// Otherwise fall back to index 0 which shall always work
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// because there must be anything that has sent something.
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index = Math.Min(listView.SelectedIndex, 0);
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}
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return index;
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}
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internal static T? FindVisualChildOfType<T>(this DependencyObject depObj, int index = 0)
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where T : DependencyObject
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{
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for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
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{
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DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
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if (child != null)
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{
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if (child is T)
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{
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if (index-- == 0)
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{
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return (T)child;
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}
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continue;
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}
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T? childItem = child.FindVisualChildOfType<T>(index);
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if (childItem != null)
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{
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return childItem;
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}
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}
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}
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return null;
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}
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internal static Point GetRelativeChildPositionTo(this Visual parent, Visual? child)
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{
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return child == null ? new() : child.TransformToAncestor(parent).Transform(new ());
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}
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// TODO: Find and remove any unnecessary convertions
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internal static ImageSource ToImageSource(this Icon icon)
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{
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return (ImageSource)new IconToImageSourceConverter().Convert(
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icon,
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typeof(ImageSource),
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null!,
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CultureInfo.InvariantCulture);
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}
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internal static SolidColorBrush ToSolidColorBrush(this System.Drawing.Color color)
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{
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return new SolidColorBrush(Color.FromArgb(color.A, color.R, color.G, color.B));
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}
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internal static SolidColorBrush SolidColorBrushFromString(string value)
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{
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return new SolidColorBrush((Color)System.Windows.Media.ColorConverter.ConvertFromString(value));
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}
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}
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}
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