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取消缩放功能（有问题）

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fengjiayi
2024-09-09 21:06:47 +08:00
parent 10f9738a2c
commit 181acff16b
4 changed files with 245 additions and 89 deletions
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136
WorkBench/MainWindow.xaml.cs
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@@ -1294,8 +1294,9 @@ namespace Serein.WorkBench
if (e.MiddleButton == MouseButtonState.Pressed)
{
IsCanvasDragging = true;
startPoint = e.GetPosition(this);
startPoint = e.GetPosition(FlowChartScrollViewer);
FlowChartCanvas.CaptureMouse();
e.Handled = true; // 防止事件传播影响其他控件
}
}
@@ -1305,80 +1306,131 @@ namespace Serein.WorkBench
{
IsCanvasDragging = false;
FlowChartCanvas.ReleaseMouseCapture();
foreach(var line in connections)
{
line.Refresh();
}
}
}
// 缩放功能有问题
private void FlowChartCanvas_MouseWheel(object sender, MouseWheelEventArgs e)
{
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
double scale = e.Delta > 0 ? 1.1 : 0.9;
scaleTransform.ScaleX *= scale;
scaleTransform.ScaleY *= scale;
//double scale = e.Delta > 0 ? 0.1 : -0.1;
//scaleTransform.ScaleX += scale;
//scaleTransform.ScaleY += scale;
//AdjustCanvasSize();
//double zoomFactor = e.Delta > 0 ? 1.1 : 0.9;
//// 获取鼠标相对于Canvas的位置
//Point mousePosition = e.GetPosition(FlowChartCanvas);
//// 计算缩放后的Canvas中心位置
//double absoluteX = mousePosition.X * scaleTransform.ScaleX;
//double absoluteY = mousePosition.Y * scaleTransform.ScaleY;
//// 应用缩放
//scaleTransform.ScaleX *= zoomFactor;
//scaleTransform.ScaleY *= zoomFactor;
//// 平移，使缩放中心保持在鼠标光标处
//translateTransform.X = mousePosition.X - absoluteX * zoomFactor;
//translateTransform.Y = mousePosition.Y - absoluteY * zoomFactor;
// 调整画布大小，使其始终占据整个容器
//AdjustCanvasSizeToContainer();
}
}
private void AdjustCanvasSizeToContainer()
{
// 获取当前缩放后的画布大小
double newWidth = FlowChartCanvas.Width * scaleTransform.ScaleX;
double newHeight = FlowChartCanvas.Height * scaleTransform.ScaleY;
// 设置画布大小，使其至少与ScrollViewer的可视区域大小相同
FlowChartCanvas.Width = Math.Max(FlowChartScrollViewer.Width, newWidth);
FlowChartCanvas.Height = Math.Max(FlowChartScrollViewer.Height, newHeight);
}
private void AdjustCanvasSize()
{
// 获取 ScrollViewer 可视区域的宽度和高度
double scrollViewerWidth = FlowChartScrollViewer.Width * scaleTransform.ScaleX;
double scrollViewerHeight = FlowChartScrollViewer.Height * scaleTransform.ScaleY;
// 调整 Canvas 大小
if (scrollViewerWidth > 0 && scrollViewerHeight > 0)
{
FlowChartCanvas.Width = scrollViewerWidth;
FlowChartCanvas.Height = scrollViewerHeight;
}
}
private void AdjustCanvasSizeAndContent(double deltaX, double deltaY)
{
var myCanvas = FlowChartCanvas;
// 获取画布的边界框
Rect transformedBounds = myCanvas.RenderTransform.TransformBounds(new Rect(myCanvas.RenderSize));
Rect transformedBounds = FlowChartCanvas.RenderTransform.TransformBounds(new Rect(FlowChartCanvas.RenderSize));
// Debug.Print($" {FlowChartScrollViewer.ActualWidth} / {FlowChartScrollViewer.ActualHeight} -- {transformedBounds.Right} / {transformedBounds.Bottom}");
// Debug.Print($" {transformedBounds.Left} / {transformedBounds.Top} -- {deltaX} / {deltaY}");
// 检查画布的左边缘是否超出视图
if (transformedBounds.Left > 0)
if (deltaX > 0 && transformedBounds.Left > 0)
{
double offsetX = transformedBounds.Left;
myCanvas.Width += offsetX;
FlowChartCanvas.Width += offsetX;
translateTransform.X -= offsetX;
Debug.Print($" offsetX : {offsetX}");
// 移动所有控件的位置
foreach (UIElement child in myCanvas.Children)
foreach (UIElement child in FlowChartCanvas.Children)
{
Canvas.SetLeft(child, Canvas.GetLeft(child) + offsetX);
}
}
// 检查画布的上边缘是否超出视图
if (transformedBounds.Top > 0)
//if (transformedBounds.Top > 0)
if (deltaY > 0 & transformedBounds.Top > 0)
{
double offsetY = transformedBounds.Top;
myCanvas.Height += offsetY;
FlowChartCanvas.Height += offsetY;
translateTransform.Y -= offsetY;
Debug.Print($" offsetY : {offsetY}");
// 移动所有控件的位置
foreach (UIElement child in myCanvas.Children)
foreach (UIElement child in FlowChartCanvas.Children)
{
Canvas.SetTop(child, Canvas.GetTop(child) + offsetY);
}
}
//Debug.Print($" {FlowChartScrollViewer.ActualWidth} / {FlowChartScrollViewer.ActualHeight} -- {transformedBounds.Right} / {transformedBounds.Bottom}");
var size = 50;
// 检查画布的右边缘是否超出当前宽度
if (transformedBounds.Right + size < FlowChartScrollViewer.ActualWidth)
if ( transformedBounds.Right + size < FlowChartScrollViewer.ActualWidth)
{
double extraWidth = FlowChartScrollViewer.ActualWidth - transformedBounds.Right;
FlowChartCanvas.Width += extraWidth;
this.FlowChartCanvas.Width += extraWidth;
}
// 检查画布的下边缘是否超出当前高度
if (transformedBounds.Bottom + size < FlowChartScrollViewer.ActualHeight)
{
double extraHeight = FlowChartScrollViewer.ActualHeight - transformedBounds.Bottom;
FlowChartCanvas.Height += extraHeight;
this.FlowChartCanvas.Height += extraHeight;
}
}
#endregion
/// <summary>
@@ -1398,10 +1450,9 @@ namespace Serein.WorkBench
currentLine.X2 = position.X;
currentLine.Y2 = position.Y;
}
if (IsCanvasDragging)
{
Point currentMousePosition = e.GetPosition(this);
Point currentMousePosition = e.GetPosition(FlowChartScrollViewer);
double deltaX = currentMousePosition.X - startPoint.X;
double deltaY = currentMousePosition.Y - startPoint.Y;
@@ -1410,9 +1461,15 @@ namespace Serein.WorkBench
startPoint = currentMousePosition;
// Adjust canvas size and content if necessary
AdjustCanvasSizeAndContent(deltaX, deltaY);
foreach (var line in connections)
{
line.Refresh();
}
e.Handled = true; // 防止事件传播影响其他控件
}
}
/// <summary>
@@ -1550,19 +1607,19 @@ namespace Serein.WorkBench
/// <param name="e"></param>
private void FlowChartScrollViewer_SizeChanged(object sender, SizeChangedEventArgs e)
{
// 确保 FlowChartCanvas 的最小尺寸等于 ScrollViewer 的可见尺寸
var scrollViewerViewportWidth = FlowChartScrollViewer.ViewportWidth;
var scrollViewerViewportHeight = FlowChartScrollViewer.ViewportHeight;
//// 确保 FlowChartCanvas 的最小尺寸等于 ScrollViewer 的可见尺寸
//var scrollViewerViewportWidth = FlowChartScrollViewer.ViewportWidth;
//var scrollViewerViewportHeight = FlowChartScrollViewer.ViewportHeight;
if (FlowChartCanvas.Width < scrollViewerViewportWidth)
{
FlowChartCanvas.Width = scrollViewerViewportWidth;
}
//if (FlowChartCanvas.Width < scrollViewerViewportWidth)
//{
// FlowChartCanvas.Width = scrollViewerViewportWidth;
//}
if (FlowChartCanvas.Height < scrollViewerViewportHeight)
{
FlowChartCanvas.Height = scrollViewerViewportHeight;
}
//if (FlowChartCanvas.Height < scrollViewerViewportHeight)
//{
// FlowChartCanvas.Height = scrollViewerViewportHeight;
//}
}
@@ -2124,7 +2181,10 @@ namespace Serein.WorkBench
return Uri.UnescapeDataString(relativeUri.ToString().Replace('/', System.IO.Path.DirectorySeparatorChar));
}
private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
{
AdjustCanvasSize();
}
}
#region 创建两个控件之间的连接关系，在UI层面上显示为 带箭头指向的贝塞尔曲线