Exemple #1
0
        private bool SaveImageFile(Drawing drawing, string fileName,
                                   string imageFileName)
        {
            string outputExt      = this.GetImageFileExtention();
            string outputFileName = null;

            if (String.IsNullOrEmpty(imageFileName))
            {
                string fileNameWithoutExt =
                    Path.GetFileNameWithoutExtension(fileName);

                string workingDir = Path.GetDirectoryName(fileName);
                outputFileName = Path.Combine(workingDir,
                                              fileNameWithoutExt + outputExt);
            }
            else
            {
                string fileExt = Path.GetExtension(imageFileName);
                if (String.IsNullOrEmpty(fileExt))
                {
                    outputFileName = imageFileName + outputExt;
                }
                else if (!String.Equals(fileExt, outputExt,
                                        StringComparison.OrdinalIgnoreCase))
                {
                    outputFileName = Path.ChangeExtension(imageFileName, outputExt);
                }
            }

            BitmapEncoder bitampEncoder = this.GetBitmapEncoder(outputExt);

            // The image parameters...
            Rect   drawingBounds = drawing.Bounds;
            int    pixelWidth    = (int)drawingBounds.Width;
            int    pixelHeight   = (int)drawingBounds.Height;
            double dpiX          = 96;
            double dpiY          = 96;

            // The Visual to use as the source of the RenderTargetBitmap.
            DrawingVisualEx drawingVisual  = new DrawingVisualEx();
            DrawingContext  drawingContext = drawingVisual.RenderOpen();

            drawingContext.DrawDrawing(drawing);
            drawingContext.Close();

            // The BitmapSource that is rendered with a Visual.
            RenderTargetBitmap targetBitmap = new RenderTargetBitmap(
                pixelWidth, pixelHeight, dpiX, dpiY, PixelFormats.Pbgra32);

            targetBitmap.Render(drawingVisual);

            // Encoding the RenderBitmapTarget as an image file.
            bitampEncoder.Frames.Add(BitmapFrame.Create(targetBitmap));
            using (FileStream stream = File.Create(outputFileName))
            {
                bitampEncoder.Save(stream);
            }

            return(true);
        }
Exemple #2
0
        /// <summary>
        ///
        /// </summary>
        /// <returns></returns>
        public DrawingVisualEx GetVisual()
        {
            DrawingVisualEx visual = new DrawingVisualEx(this);

            using (DrawingContext drawingContext = visual.RenderOpen())
            {
                drawingContext.DrawLine(new Pen(IsSelected ? CanvasParam.PenSelectedColor : CanvasParam.PenColor, CanvasParam.Thikness / CanvasParam.Scale),
                                        new Point(X1, CanvasParam.CanvasHeight - Y1), new Point(X2, CanvasParam.CanvasHeight - Y2));
            }

            visual.Transform = new ScaleTransform(CanvasParam.Scale, CanvasParam.Scale, 0, CanvasParam.CanvasHeight);

            return(visual);
        }