WPFUtils.cs 15 KB

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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Drawing;
  4. using System.Linq.Expressions;
  5. using System.Windows;
  6. using System.Windows.Controls;
  7. using System.Windows.Data;
  8. using System.Windows.Media;
  9. using InABox.Core;
  10. using Image = System.Windows.Controls.Image;
  11. namespace InABox.WPF;
  12. public class FuncTemplateSelector : DataTemplateSelector
  13. {
  14. public Func<object, DependencyObject, FrameworkElement?> TemplateFunc { get; set; }
  15. public FuncTemplateSelector(Func<object, DependencyObject, FrameworkElement?> templateFunc)
  16. {
  17. TemplateFunc = templateFunc;
  18. }
  19. public override DataTemplate SelectTemplate(object item, DependencyObject container)
  20. {
  21. return TemplateGenerator.CreateDataTemplate(() =>
  22. {
  23. return TemplateFunc(item, container);
  24. });
  25. }
  26. }
  27. public static class WPFUtils
  28. {
  29. public static Style AddSetter(this Style style, DependencyProperty property, object value)
  30. {
  31. style.Setters.Add(new Setter(property, value));
  32. return style;
  33. }
  34. public static DataTrigger AddSetter(this DataTrigger trigger, DependencyProperty property, object value)
  35. {
  36. trigger.Setters.Add(new Setter(property, value));
  37. return trigger;
  38. }
  39. public static DataTrigger AddDataTrigger(this Style style)
  40. {
  41. var trigger = new DataTrigger();
  42. style.Triggers.Add(trigger);
  43. return trigger;
  44. }
  45. public static DataTrigger AddDataTrigger(this Style style, Binding binding, object value)
  46. {
  47. var trigger = new DataTrigger() { Binding = binding, Value = value };
  48. style.Triggers.Add(trigger);
  49. return trigger;
  50. }
  51. public static SolidColorBrush ToBrush(this System.Windows.Media.Color color, double opacity = 1.0)
  52. {
  53. return new SolidColorBrush(color) { Opacity = opacity };
  54. }
  55. #region Binding
  56. public static Binding CreateBinding<T, TProperty>(
  57. T source,
  58. Expression<Func<T, TProperty>> expression,
  59. IValueConverter? converter,
  60. string? format)
  61. {
  62. return new Binding(CoreUtils.GetFullPropertyName(expression, "_"))
  63. {
  64. Source = source,
  65. Converter = converter,
  66. StringFormat = format
  67. };
  68. }
  69. public static Binding CreateBinding<T, TProperty>(
  70. Expression<Func<T, TProperty>> expression,
  71. IValueConverter? converter,
  72. BindingMode mode,
  73. string? format)
  74. {
  75. return new Binding(CoreUtils.GetFullPropertyName(expression, "_"))
  76. {
  77. Converter = converter,
  78. StringFormat = format,
  79. Mode = mode
  80. };
  81. }
  82. public static DataTrigger Bind<T, TProperty, TValue>(
  83. this DataTrigger trigger,
  84. T source,
  85. Expression<Func<T, TProperty>> expression,
  86. TValue value,
  87. IValueConverter<TProperty, TValue>? converter,
  88. string? format = null)
  89. {
  90. trigger.Binding = CreateBinding(source, expression, converter, format);
  91. trigger.Value = value;
  92. return trigger;
  93. }
  94. public static DataTrigger Bind<T, TProperty, TValue>(
  95. this DataTrigger trigger,
  96. Expression<Func<T, TProperty>> expression,
  97. TValue value,
  98. IValueConverter<TProperty, TValue>? converter,
  99. BindingMode mode = BindingMode.Default,
  100. string? format = null)
  101. {
  102. trigger.Binding = CreateBinding(expression, converter, mode, format);
  103. trigger.Value = value;
  104. return trigger;
  105. }
  106. public static DataTrigger Bind<T, TProperty>(
  107. this DataTrigger trigger,
  108. T source,
  109. Expression<Func<T, TProperty>> expression,
  110. TProperty value,
  111. IValueConverter? converter = null,
  112. string? format = null)
  113. {
  114. trigger.Binding = CreateBinding(source, expression, converter, format);
  115. trigger.Value = value;
  116. return trigger;
  117. }
  118. public static DataTrigger Bind<T, TProperty>(
  119. this DataTrigger trigger,
  120. Expression<Func<T, TProperty>> expression,
  121. TProperty value,
  122. IValueConverter? converter = null,
  123. BindingMode mode = BindingMode.Default,
  124. string? format = null)
  125. {
  126. trigger.Binding = CreateBinding(expression, converter, mode, format);
  127. trigger.Value = value;
  128. return trigger;
  129. }
  130. public static void Bind<T, TProperty>(
  131. this FrameworkElement element,
  132. DependencyProperty property,
  133. T source,
  134. Expression<Func<T, TProperty>> expression,
  135. IValueConverter? converter = null,
  136. string? format = null)
  137. {
  138. element.SetBinding(
  139. property,
  140. CreateBinding(source, expression, converter, format)
  141. );
  142. }
  143. public static void Bind<T, TProperty>(
  144. this FrameworkElement element,
  145. DependencyProperty property,
  146. Expression<Func<T, TProperty>> expression,
  147. IValueConverter? converter = null,
  148. BindingMode mode = BindingMode.Default,
  149. string? format = null )
  150. {
  151. element.SetBinding(
  152. property,
  153. CreateBinding(expression, converter, mode, format)
  154. );
  155. }
  156. #endregion
  157. public static T? FindLogicalParent<T>(this DependencyObject dependencyObject)
  158. where T : DependencyObject
  159. {
  160. DependencyObject? parent = dependencyObject;
  161. do
  162. {
  163. parent = LogicalTreeHelper.GetParent(parent);
  164. } while(parent != null && parent is not T);
  165. return parent as T;
  166. }
  167. public static IEnumerable<T> FindVisualChildren<T>(this DependencyObject depObj)
  168. {
  169. if (depObj != null)
  170. //ContentControl cc = depObj as ContentControl;
  171. //if (cc != null)
  172. //{
  173. // if (cc.Content == null)
  174. // yield return null;
  175. // if (cc.Content is T)
  176. // yield return cc.Content as T;
  177. // foreach (var child in FindVisualChildren<T>(cc.Content as DependencyObject))
  178. // yield return child;
  179. //}
  180. //else
  181. for (var i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
  182. {
  183. var child = VisualTreeHelper.GetChild(depObj, i);
  184. if (child is null)
  185. continue;
  186. if (child is T t)
  187. yield return t;
  188. foreach (var childOfChild in FindVisualChildren<T>(child))
  189. yield return childOfChild;
  190. }
  191. }
  192. #region Grid Children
  193. public static int GetRow(this Grid grid, DependencyObject dependencyObject)
  194. {
  195. while (true)
  196. {
  197. var parent = LogicalTreeHelper.GetParent(dependencyObject);
  198. if (parent == null)
  199. return -1;
  200. if (parent == grid)
  201. return Grid.GetRow(dependencyObject as UIElement);
  202. dependencyObject = parent;
  203. }
  204. }
  205. public static int GetRowSpan(this Grid grid, DependencyObject dependencyObject)
  206. {
  207. while (true)
  208. {
  209. var parent = LogicalTreeHelper.GetParent(dependencyObject);
  210. if (parent == null)
  211. return -1;
  212. if (parent == grid)
  213. return Grid.GetRowSpan(dependencyObject as UIElement);
  214. dependencyObject = parent;
  215. }
  216. }
  217. public static int GetColumn(this Grid grid, DependencyObject dependencyObject)
  218. {
  219. while (true)
  220. {
  221. var parent = LogicalTreeHelper.GetParent(dependencyObject);
  222. if (parent == null)
  223. return -1;
  224. if (parent == grid)
  225. return Grid.GetColumn(dependencyObject as UIElement);
  226. dependencyObject = parent;
  227. }
  228. }
  229. public static int GetColumnSpan(this Grid grid, DependencyObject dependencyObject)
  230. {
  231. while (true)
  232. {
  233. var parent = LogicalTreeHelper.GetParent(dependencyObject);
  234. if (parent == null)
  235. return -1;
  236. if (parent == grid)
  237. return Grid.GetColumnSpan(dependencyObject as UIElement);
  238. dependencyObject = parent;
  239. }
  240. }
  241. public static void SetGridPosition(this FrameworkElement element, int row, int column, int rowspan = 1, int colspan = 1)
  242. {
  243. element.SetValue(Grid.ColumnProperty, column);
  244. element.SetValue(Grid.ColumnSpanProperty, Math.Max(1, colspan));
  245. element.SetValue(Grid.RowProperty, row);
  246. element.SetValue(Grid.RowSpanProperty, Math.Max(1, rowspan));
  247. }
  248. public static Grid AddChild(this Grid grid, FrameworkElement element, int row, int column, int rowSpan = 1, int colSpan = 1)
  249. {
  250. element.SetGridPosition(row, column, rowSpan, colSpan);
  251. grid.Children.Add(element);
  252. return grid;
  253. }
  254. #endregion
  255. #region Grid Columns + Rows
  256. public static ColumnDefinition AddColumn(this Grid grid, GridUnitType type, double value = 1)
  257. {
  258. var colDef = new ColumnDefinition { Width = new GridLength(value, type) };
  259. grid.ColumnDefinitions.Add(colDef);
  260. return colDef;
  261. }
  262. public static ColumnDefinition AddColumn(this Grid grid, double value)
  263. {
  264. var colDef = new ColumnDefinition { Width = new GridLength(value) };
  265. grid.ColumnDefinitions.Add(colDef);
  266. return colDef;
  267. }
  268. public static RowDefinition AddRow(this Grid grid, GridUnitType type, double value = 1)
  269. {
  270. var rowDef = new RowDefinition { Height = new GridLength(value, type) };
  271. grid.RowDefinitions.Add(rowDef);
  272. return rowDef;
  273. }
  274. public static RowDefinition AddRow(this Grid grid, double value)
  275. {
  276. var rowDef = new RowDefinition { Height = new GridLength(value) };
  277. grid.RowDefinitions.Add(rowDef);
  278. return rowDef;
  279. }
  280. #endregion
  281. #region Menu Utils
  282. private static void ItemsControlInsert(ItemsControl menu, FrameworkElement item, int index)
  283. {
  284. if (index != -1)
  285. {
  286. menu.Items.Insert(index, item);
  287. }
  288. else
  289. {
  290. menu.Items.Add(item);
  291. }
  292. }
  293. private static MenuItem DoAddMenuItem(ItemsControl menu, string caption, Bitmap? image, bool enabled, int index = -1)
  294. {
  295. var item = new MenuItem { Header = caption, IsEnabled = enabled };
  296. if (image != null)
  297. item.Icon = new Image() { Source = enabled ? image.AsBitmapImage(24, 24) : image.AsGrayScale().AsBitmapImage(24, 24) };
  298. ItemsControlInsert(menu, item, index);
  299. return item;
  300. }
  301. private static MenuItem DoAddMenuItem(ItemsControl menu, string caption, Bitmap? image, Action? click, bool enabled, int index = -1)
  302. {
  303. var item = DoAddMenuItem(menu, caption, image, enabled, index);
  304. if (click != null)
  305. {
  306. item.Click += (o, e) =>
  307. {
  308. click();
  309. };
  310. }
  311. return item;
  312. }
  313. private static MenuItem DoAddMenuItem<T>(ItemsControl menu, string caption, Bitmap? image, T tag, Action<T> click, bool enabled, int index = -1)
  314. {
  315. var item = DoAddMenuItem(menu, caption, image, enabled, index);
  316. item.Tag = tag;
  317. item.Click += (o, e) =>
  318. {
  319. click((T)(o as MenuItem)!.Tag);
  320. };
  321. return item;
  322. }
  323. public delegate void CheckToggleAction(bool isChecked);
  324. public delegate void CheckToggleAction<T>(T tag, bool isChecked);
  325. private static MenuItem DoAddCheckItem(ItemsControl menu, string caption, CheckToggleAction click, bool isChecked, bool enabled, int index = -1)
  326. {
  327. var item = new MenuItem { Header = caption, IsEnabled = enabled, IsCheckable = true, IsChecked = isChecked };
  328. item.Click += (o, e) =>
  329. {
  330. click(item.IsChecked);
  331. };
  332. ItemsControlInsert(menu, item, index);
  333. return item;
  334. }
  335. private static MenuItem DoAddCheckItem<T>(ItemsControl menu, string caption, T tag, CheckToggleAction<T> click, bool isChecked, bool enabled, int index = -1)
  336. {
  337. var item = new MenuItem { Header = caption, IsEnabled = enabled, IsCheckable = true, IsChecked = isChecked };
  338. item.Tag = tag;
  339. item.Click += (o, e) =>
  340. {
  341. click((T)(o as MenuItem)!.Tag, item.IsChecked);
  342. };
  343. ItemsControlInsert(menu, item, index);
  344. return item;
  345. }
  346. private static Separator DoAddSeparator(ItemsControl menu, int index)
  347. {
  348. var separator = new Separator();
  349. ItemsControlInsert(menu, separator, index);
  350. return separator;
  351. }
  352. private static Separator? DoAddSeparatorIfNeeded(ItemsControl menu, int index)
  353. {
  354. if (menu.Items.Count == 0) return null;
  355. var lastIndex = index != -1 ? index - 1 : menu.Items.Count - 1;
  356. if (lastIndex < 0 || lastIndex >= menu.Items.Count) return null;
  357. var last = menu.Items[lastIndex];
  358. if (last is Separator) return null;
  359. var separator = new Separator();
  360. ItemsControlInsert(menu, separator, index);
  361. return separator;
  362. }
  363. private static void DoRemoveUnnecessarySeparators(ItemsControl menu)
  364. {
  365. while(menu.Items.Count > 0 && menu.Items[0] is Separator)
  366. {
  367. menu.Items.RemoveAt(0);
  368. }
  369. while(menu.Items.Count > 0 && menu.Items[^1] is Separator)
  370. {
  371. menu.Items.RemoveAt(menu.Items.Count - 1);
  372. }
  373. }
  374. public static Separator AddSeparator(this ContextMenu menu, int index = -1) => DoAddSeparator(menu, index);
  375. public static Separator AddSeparator(this MenuItem menu, int index = -1) => DoAddSeparator(menu, index);
  376. public static Separator? AddSeparatorIfNeeded(this ContextMenu menu, int index = -1) => DoAddSeparatorIfNeeded(menu, index);
  377. public static Separator? AddSeparatorIfNeeded(this MenuItem menu, int index = -1) => DoAddSeparatorIfNeeded(menu, index);
  378. public static void RemoveUnnecessarySeparators(this ContextMenu menu) => DoRemoveUnnecessarySeparators(menu);
  379. public static void RemoveUnnecessarySeparators(this MenuItem menu) => DoRemoveUnnecessarySeparators(menu);
  380. public static MenuItem AddItem(this ContextMenu menu, string caption, Bitmap? image, Action? click, bool enabled = true, int index = -1)
  381. => DoAddMenuItem(menu, caption, image, click, enabled, index);
  382. public static MenuItem AddItem(this MenuItem menu, string caption, Bitmap? image, Action? click, bool enabled = true, int index = -1)
  383. => DoAddMenuItem(menu, caption, image, click, enabled, index);
  384. public static MenuItem AddItem<T>(this ContextMenu menu, string caption, Bitmap? image, T tag, Action<T> click, bool enabled = true, int index = -1)
  385. => DoAddMenuItem(menu, caption, image, tag, click, enabled, index);
  386. public static MenuItem AddItem<T>(this MenuItem menu, string caption, Bitmap? image, T tag, Action<T> click, bool enabled = true, int index = -1)
  387. => DoAddMenuItem(menu, caption, image, tag, click, enabled, index);
  388. public static MenuItem AddCheckItem(this ContextMenu menu, string caption, CheckToggleAction click, bool isChecked = false, bool enabled = true, int index = -1)
  389. => DoAddCheckItem(menu, caption, click, isChecked, enabled, index);
  390. public static MenuItem AddCheckItem<T>(this ContextMenu menu, string caption, T tag, CheckToggleAction<T> click, bool isChecked = false, bool enabled = true, int index = -1)
  391. => DoAddCheckItem(menu, caption, tag, click, isChecked, enabled, index);
  392. #endregion
  393. }