public LoadingScreen() { InitializeComponent(); BackGrid.Visibility = Visibility.Visible; LoadRing.IsActive = true; BackGrid.Fade(value: 1, duration: 400).StartAsync(); }
/// <summary> /// //移动,根据X.Y的值来移动。并把当前鼠标位置赋值给mouseXY. /// </summary> private void Domousemove(ContentControl img, MouseEventArgs e) { if (e.LeftButton != MouseButtonState.Pressed) { return; } var group = BackGrid.FindResource("Imageview") as TransformGroup; var transform = group.Children[1] as TranslateTransform; var transform1 = group.Children[0] as TranslateTransform; var position = e.GetPosition(img); transform.X -= mouseXY.X - position.X; transform.Y -= mouseXY.Y - position.Y; if (scale < 1.1) { transform.X = 0; transform.Y = 0; return; } if ((700 - transform.X) >= 700 * scale && transform.Y > 0) { transform.X = (700 - 700 * scale); transform.Y = 0; return; } if ((600 - transform.Y) >= 600 * scale && transform.X > 0) { transform.X = 0; transform.Y = (600 - 600 * scale); return; } if (transform.X > 0 && transform.Y <= 0) { transform.X = 0; return; } if (transform.Y > 0 && transform.X <= 0) { transform.Y = 0; return; } if (transform.X > 0 && transform.Y > 0) { transform.X = 0; transform.Y = 0; return; } if ((700 - transform.X) >= 700 * scale && (600 - transform.Y) < 600 * scale) { transform.X = (700 - 700 * scale); return; } if ((600 - transform.Y) >= 600 * scale && (700 - transform.X) < 700 * scale) { transform.Y = (600 - 600 * scale); return; } if ((700 - transform.X) >= 700 * scale && (600 - transform.Y) >= 600 * scale) { transform.X = (700 - 700 * scale); transform.Y = (600 - 600 * scale); return; } mouseXY = position; }
/// <summary> /// //实现图幅的放大缩小 /// </summary> private void ContentControl_MouseWheel(object sender, MouseWheelEventArgs e) { var img = sender as ContentControl; if (img == null) { return; } var point = e.GetPosition(img); var group = BackGrid.FindResource("Imageview") as TransformGroup; var delta = e.Delta * 0.001; DowheelZoom(group, point, delta); }