将 RenderTargetBitmap 转换为 System.Drawing.Image

发布于 2024-12-10 07:38:44 字数 942 浏览 2 评论 0原文

我有 3D WPF 视觉对象，我想将其传递到 Excel 单元格（通过剪贴板缓冲区）。

对于“普通”BMP 图像，它可以工作，但我不知道如何转换 RenderTargetBitmap。

我的代码如下所示：

System.Windows.Media.Imaging.RenderTargetBitmap renderTarget = myParent.GetViewPortAsImage(DiagramSizeX, DiagramSizeY);
System.Windows.Controls.Image myImage = new System.Windows.Controls.Image();
myImage.Source = renderTarget;

System.Drawing.Bitmap pg = new System.Drawing.Bitmap(DiagramSizeX, DiagramSizeY);
System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(pg);
gr.DrawImage(myImage, 0, 0);

System.Windows.Forms.Clipboard.SetDataObject(pg, true);
sheet.Paste(range);

我的问题是 gr.DrawImage 不接受 System.Windows.Controls.Image 或 System.Windows.Media.Imaging .RenderTargetBitmap;只有一个System.Drawing.Image。

如何将 Controls.Image.Imaging.RenderTargetBitmap 转换为 Image，或者是否有更简单的方法？

原文

I have 3D WPF visual that I want to pass into an Excel cell (via clipboard buffer).

With "normal" BMP images it works but I do not know how to convert a RenderTargetBitmap.

My code looks like this:

System.Windows.Media.Imaging.RenderTargetBitmap renderTarget = myParent.GetViewPortAsImage(DiagramSizeX, DiagramSizeY);
System.Windows.Controls.Image myImage = new System.Windows.Controls.Image();
myImage.Source = renderTarget;

System.Drawing.Bitmap pg = new System.Drawing.Bitmap(DiagramSizeX, DiagramSizeY);
System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(pg);
gr.DrawImage(myImage, 0, 0);

System.Windows.Forms.Clipboard.SetDataObject(pg, true);
sheet.Paste(range);

My problem is that gr.DrawImage does not accept a System.Windows.Controls.Image or a System.Windows.Media.Imaging.RenderTargetBitmap; only a System.Drawing.Image.

How do I convert the Controls.Image.Imaging.RenderTargetBitmap into an Image, or are there any easier ways?

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木落 2024-12-17 07:38:44

您可以将 RenderTargetBitmap 中的像素直接复制到新 Bitmap 的像素缓冲区中。请注意，我假设您的 RenderTargetBitmap 使用 PixelFormats.Pbrga32，因为使用任何其他像素格式都会从 RenderTargetBitmap 的构造函数抛出异常>。

var bitmap = new Bitmap(renderTarget.PixelWidth, renderTarget.PixelHeight,
    PixelFormat.Format32bppPArgb);

var bitmapData = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size),
    ImageLockMode.WriteOnly, bitmap.PixelFormat);

renderTarget.CopyPixels(Int32Rect.Empty, bitmapData.Scan0,
    bitmapData.Stride*bitmapData.Height, bitmapData.Stride);

bitmap.UnlockBits(bitmapData);

You can copy the pixels from the RenderTargetBitmap directly into the pixel buffer of a new Bitmap. Note that I've assumed that your RenderTargetBitmap uses PixelFormats.Pbrga32, as use of any other pixel format will throw an exception from the constructor of RenderTargetBitmap.

var bitmap = new Bitmap(renderTarget.PixelWidth, renderTarget.PixelHeight,
    PixelFormat.Format32bppPArgb);

var bitmapData = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size),
    ImageLockMode.WriteOnly, bitmap.PixelFormat);

renderTarget.CopyPixels(Int32Rect.Empty, bitmapData.Scan0,
    bitmapData.Stride*bitmapData.Height, bitmapData.Stride);

bitmap.UnlockBits(bitmapData);

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流殇 2024-12-17 07:38:44

这是我想出的解决方案

System.Windows.Media.Imaging.RenderTargetBitmap renderTarget = myParent.GetViewPortAsImage(DiagramSizeX, DiagramSizeY);
System.Windows.Media.Imaging.BitmapEncoder encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
MemoryStream myStream = new MemoryStream();

encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(renderTarget));
encoder.Save(myStream);
//
System.Drawing.Bitmap pg = new System.Drawing.Bitmap(DiagramSizeX, DiagramSizeY);
System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(pg);
//
// Background
//
gr.FillRectangle(new System.Drawing.SolidBrush(BKGC), 0, 0, DiagramSizeX, DiagramSizeY);
//
gr.DrawImage(System.Drawing.Bitmap.FromStream(myStream), 0, 0);
System.Windows.Forms.Clipboard.SetDataObject(pg, true);

sheet.Paste(range);

This was the solution I came up with

System.Windows.Media.Imaging.RenderTargetBitmap renderTarget = myParent.GetViewPortAsImage(DiagramSizeX, DiagramSizeY);
System.Windows.Media.Imaging.BitmapEncoder encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
MemoryStream myStream = new MemoryStream();

encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(renderTarget));
encoder.Save(myStream);
//
System.Drawing.Bitmap pg = new System.Drawing.Bitmap(DiagramSizeX, DiagramSizeY);
System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(pg);
//
// Background
//
gr.FillRectangle(new System.Drawing.SolidBrush(BKGC), 0, 0, DiagramSizeX, DiagramSizeY);
//
gr.DrawImage(System.Drawing.Bitmap.FromStream(myStream), 0, 0);
System.Windows.Forms.Clipboard.SetDataObject(pg, true);

sheet.Paste(range);

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假面具 2024-12-17 07:38:44

也许我不明白这个问题，但是你想将 RenderTargetBitmap 复制到剪贴板，你不能直接调用 SetImage 吗？：

    Dim iRT As RenderTargetBitmap = makeImage() //this is what you do to get the rendertargetbitmap
    If iRT Is Nothing Then Exit Sub
    Clipboard.SetImage(iRT)

Maybe I don't understand the question right, but you want to copy a RenderTargetBitmap to the clipboard, couldn't you just call SetImage ?:

    Dim iRT As RenderTargetBitmap = makeImage() //this is what you do to get the rendertargetbitmap
    If iRT Is Nothing Then Exit Sub
    Clipboard.SetImage(iRT)

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