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编写VisualHelper

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This commit is contained in:
zengwenjie
2025-09-25 14:52:08 +08:00
parent 14a493c3b0
commit c901c9c096
8 changed files with 192 additions and 11 deletions
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15
DeedyDesigner/Deedy.Activity/Contract/Enums/DropPlacement.cs
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@@ -11,25 +11,30 @@ namespace Deedy.Activity
/// </summary>
public enum DropPlacement : int
{
UnDragged = 0,
/// <summary>
/// 不确定的
/// </summary>
Uncertain=0,
Uncertain = 1,
/// <summary>
/// 拒绝放置
/// </summary>
Rejected = 0,
Rejected = 2,
/// <summary>
/// 在节点前
/// </summary>
BeforeMe = 1,
BeforeMe = 3,
/// <summary>
/// 在节点内
/// </summary>
WithinMe = 2,
WithinMe = 4,
/// <summary>
/// 在节点后
/// </summary>
BehindMe = 3,
BehindMe = 5,
/// <summary>
/// 替换自身
/// </summary>
ReplaceMe = 6,
}
}

32
DeedyDesigner/Deedy.Activity/Contract/Enums/LayoutDirection.cs Normal file
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@@ -0,0 +1,32 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Deedy.Activity
{
public enum LayoutDirection
{
/// <summary>
/// 不可布局
/// </summary>
Cannot,
/// <summary>
/// 只有唯一子节点
/// </summary>
Decorator,
/// <summary>
/// 上下叠放
/// </summary>
Stacked,
/// <summary>
/// 从左向右
/// </summary>
Horizontal,
/// <summary>
/// 从上到下
/// </summary>
Vertical,
}
}

2
DeedyDesigner/Deedy.Activity/DeedyVisual/IDeedyInput.cs → DeedyDesigner/Deedy.Activity/DeedyVisual/IVisualInput.cs
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@@ -6,7 +6,7 @@ using System.Threading.Tasks;
namespace Deedy.Activity
{
public interface IDeedyInput
public interface IVisualInput
{
}
}

4
DeedyDesigner/Deedy.Activity/DeedyVisual/IDeedyLayout.cs → DeedyDesigner/Deedy.Activity/DeedyVisual/IVisualLayout.cs
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@@ -6,8 +6,8 @@ using System.Threading.Tasks;
namespace Deedy.Activity
{
public interface IDeedyLayout : IContainerElement
public interface IVisualLayout : IContainerElement
{
LayoutDirection LayoutDirection { get; }
}
}

2
DeedyDesigner/Deedy.Activity/DeedyVisual/IDeedyViewer.cs → DeedyDesigner/Deedy.Activity/DeedyVisual/IVisualViewer.cs
View File

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
namespace Deedy.Activity
{
public class IDeedyViewer
public class IVisualViewer
{
}
}

6
DeedyDesigner/Deedy.Activity/DeedyVisual/DeedyLayout.cs → DeedyDesigner/Deedy.Activity/DeedyVisual/VisualLayout.cs
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@@ -10,10 +10,10 @@ using System.Windows;
namespace Deedy.Activity
{
public class DeedyLayout : IDeedyLayout
public class VisualLayout : IVisualLayout
{
public ExpandoMapping ExpandoMapping { get; set; } = new ExpandoMapping();
public DeedyLayout() { }
public VisualLayout() { }
public string Class { get; protected internal set; } = "";
public string Title { get; set; } = "";
public string Remark { get; set; } = "";
@@ -29,6 +29,8 @@ namespace Deedy.Activity
public ParamDefineCollection ParamsMapping { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
public LayoutDirection LayoutDirection => throw new NotImplementedException();
public event PropertyChangedEventHandler? PropertyChanged;
/// <summary>

141
DeedyDesigner/Deedy.Activity/Helpers/VisualHelper.cs
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@@ -3,10 +3,151 @@ using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media;
using System.Windows;
namespace Deedy.Activity.Helpers
{
/// <summary>
/// 辅助可视化单元进行相关操作
/// </summary>
public static partial class Helper
{
/// <summary>
/// 辅助可视化单元进行拖放装饰器绘制操作
/// </summary>
/// <param name="ui">要绘制的「UIElement」元素</param>
/// <param name="dc">「UIElement」元素的绘图上下文</param>
/// <param name="dropPlacement">拖放操作的放置位置</param>
/// <param name="parentLayout">父级布局的布局方向</param>
public static void Help_DrawDropAdorner(this UIElement ui, DrawingContext dc, DropPlacement dropPlacement, LayoutDirection parentLayout)
{
if (ui == null || dc == null || dropPlacement == DropPlacement.UnDragged) return;
Pen pen = new Pen(Brushes.Red, 3);
pen.Freeze();
switch (dropPlacement)
{
case DropPlacement.Rejected:
{
}
break;
case DropPlacement.Uncertain:
{
}
break;
case DropPlacement.BeforeMe:
{
if (parentLayout == LayoutDirection.Horizontal)
{
}
else if (parentLayout == LayoutDirection.Vertical)
{
}
else if (parentLayout == LayoutDirection.Stacked)
{
}
else { }
}
break;
case DropPlacement.BehindMe:
{
if (parentLayout == LayoutDirection.Horizontal)
{
}
else if (parentLayout == LayoutDirection.Vertical)
{
}
else if (parentLayout == LayoutDirection.Stacked)
{
}
else { }
}
break;
case DropPlacement.WithinMe:
{
}
break;
case DropPlacement.ReplaceMe:
{
}
break;
default: break; //DropPlacement.UnDragged;不需要绘制任何图样
}
}
/// <summary>
/// 检查拖放操作的模式
/// </summary>
/// <param name="ui">要检查的「UIElement」元素</param>
/// <param name="point">检查点位置</param>
/// <returns>检查后的拖放位置；其中不包括「DropPlacement.UnDragged」与「DropPlacement.Uncertain」</returns>
/// <remarks>
/// <para>「DropPlacement.UnDragged」= 未在拖放状态</para>
/// <para>「DropPlacement.Uncertain」= 拖放内容不是可视化元素</para>
/// <para>··以上两种情况需要在调用此方法前进行判定</para>
/// </remarks>
public static DropPlacement Help_CheckDropPlacement(this UIElement ui, Point point)
{
DropPlacement result = DropPlacement.UnDragged;
if (ui != null)
{
Size size = ui.RenderSize;
double horRuler = size.Width / 3;
if (horRuler > 20) horRuler = 20;
double verRuler = size.Height / 3;
if (verRuler > 20) verRuler = 20;
LayoutDirection direction = LayoutDirection.Cannot;
if (ui is IVisualLayout layout)
{
if (ui is FrameworkElement fe && fe.Parent is IVisualLayout parentLayout)
{
direction = parentLayout.LayoutDirection;
if (direction == LayoutDirection.Decorator)
{
if (point.X < horRuler
|| point.Y < verRuler
|| size.Width - point.X < horRuler
|| size.Height - point.Y < verRuler)
result = DropPlacement.ReplaceMe;
else result = DropPlacement.WithinMe;
}
else if (direction == LayoutDirection.Cannot)
result = DropPlacement.WithinMe;
else
{
if (point.X < horRuler || point.Y < verRuler)
result = DropPlacement.BeforeMe;
else if (size.Width - point.X < horRuler || size.Height - point.Y < verRuler)
result = DropPlacement.BehindMe;
else result = DropPlacement.WithinMe;
}
}
else result = DropPlacement.WithinMe;
}
else
{
if (ui is FrameworkElement fe && fe.Parent is IVisualLayout parentLayout)
{
direction = parentLayout.LayoutDirection;
if (direction == LayoutDirection.Decorator)
result = DropPlacement.ReplaceMe;
else if (direction == LayoutDirection.Cannot)
result = DropPlacement.Rejected;
else
{
if (point.X < horRuler || point.Y < verRuler)
result = DropPlacement.BeforeMe;
else if (size.Width - point.X < horRuler || size.Height - point.Y < verRuler)
result = DropPlacement.BehindMe;
else result = DropPlacement.Rejected;
}
}
else result = DropPlacement.Rejected;
}
}
return result;
}
}
}

1
DeedyDesigner/Deedy.Activity/IVisualElement.cs
View File

@@ -8,5 +8,6 @@ namespace Deedy.Activity
{
public interface IVisualElement : IElement
{
DropPlacement DropPlacement { get; }
}
}