Artemis.ViewModels.Profiles.ProfileViewModel.InvokeUpdateKeyboardPreview C# (CSharp) Метод

        private void InvokeUpdateKeyboardPreview(object sender, ElapsedEventArgs e)
        {
            if (_blurProgress > 2)
                _blurProgress = 0;
            _blurProgress = _blurProgress + 0.025;
            BlurRadius = (Math.Sin(_blurProgress*Math.PI) + 1)*10 + 10;

            if (SelectedProfile == null || _deviceManager.ActiveKeyboard == null || (!ShowAll && SelectedLayer == null))
            {
                var preview = new DrawingImage();
                preview.Freeze();
                KeyboardPreview = preview;
                return;
            }


            var keyboardRect = _deviceManager.ActiveKeyboard.KeyboardRectangle(4);
            var visual = new DrawingVisual();
            using (var drawingContext = visual.RenderOpen())
            {
                // Setup the DrawingVisual's size
                drawingContext.PushClip(new RectangleGeometry(keyboardRect));
                drawingContext.DrawRectangle(new SolidColorBrush(Color.FromArgb(0, 0, 0, 0)), null, keyboardRect);

                // Get the layers that must be drawn
                var drawLayers = GetRenderLayers();

                // Draw the layers
                foreach (var layer in drawLayers)
                {
                    layer.Update(null, true, false);
                    if (layer.LayerType.ShowInEdtor)
                        layer.Draw(null, drawingContext, true, false);
                }

                // Get the selection color
                var accentColor = ThemeManager.DetectAppStyle(Application.Current)?.Item2?.Resources["AccentColor"];
                if (accentColor == null)
                {
                    var preview = new DrawingImage();
                    preview.Freeze();
                    KeyboardPreview = preview;
                    return;
                }

                var pen = new Pen(new SolidColorBrush((Color) accentColor), 0.4);

                // Draw the selection outline and resize indicator
                if (SelectedLayer != null && SelectedLayer.MustDraw())
                {
                    var layerRect = SelectedLayer.Properties.GetRect();
                    // Deflate the rect so that the border is drawn on the inside
                    layerRect.Inflate(-0.2, -0.2);

                    // Draw an outline around the selected layer
                    drawingContext.DrawRectangle(null, pen, layerRect);
                    // Draw a resize indicator in the bottom-right
                    drawingContext.DrawLine(pen,
                        new Point(layerRect.BottomRight.X - 1, layerRect.BottomRight.Y - 0.5),
                        new Point(layerRect.BottomRight.X - 1.2, layerRect.BottomRight.Y - 0.7));
                    drawingContext.DrawLine(pen,
                        new Point(layerRect.BottomRight.X - 0.5, layerRect.BottomRight.Y - 1),
                        new Point(layerRect.BottomRight.X - 0.7, layerRect.BottomRight.Y - 1.2));
                    drawingContext.DrawLine(pen,
                        new Point(layerRect.BottomRight.X - 0.5, layerRect.BottomRight.Y - 0.5),
                        new Point(layerRect.BottomRight.X - 0.7, layerRect.BottomRight.Y - 0.7));
                }

                // Remove the clip
                drawingContext.Pop();
            }
            var drawnPreview = new DrawingImage(visual.Drawing);
            drawnPreview.Freeze();
            KeyboardPreview = drawnPreview;
        }