打印视口

Question

C# wpf 3D Visual Studio 2010 net 4.5

您好，

我正在尝试打印我创建的 3D 图像，但无法正确打印。 打印的图像的尺寸会根据窗口的大小等而变化。 或者它被剪裁等。

我想要的是在打印机上打印视图端口， 将其拉伸到与纸张一样宽并保持长宽比。

        PrintDialog dialog = new PrintDialog();
        if (dialog.ShowDialog() != true)
        { return; }

        StackPanel myPanel = new StackPanel();
        myPanel.Margin = new Thickness(40);

        Image myImage = new Image();
        myImage.Width = dialog.PrintableAreaWidth - (2 * MYDPI);
        myImage.Stretch = Stretch.Uniform;
        RenderTargetBitmap bmp = new RenderTargetBitmap((int)dialog.PrintableAreaWidth, (int)dialog.PrintableAreaWidth, 96, 96, PixelFormats.Pbgra32);
        bmp.Render(myViewPort);

        myImage.Source = bmp;

        myPanel.Children.Add(myImage);

        myPanel.Measure(new Size(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight));
        myPanel.Arrange(new Rect(new Point(0, 0), myPanel.DesiredSize));

        dialog.PrintVisual(myPanel, myName);

Answer 1

以下工作有效，现在无论什么，图片都会缩放到纸张的大小
视口的大小

...

        PrintDialog dialog = new PrintDialog();

        if (dialog.ShowDialog() != true)
        { 
            return; 
        }


        Grid grid = new Grid();

        grid.Margin = new Thickness(40);

        //do this for each column
        ColumnDefinition coldef;
        coldef = new ColumnDefinition();
        coldef.Width = new GridLength(dialog.PrintableAreaWidth, GridUnitType.Pixel);
        grid.ColumnDefinitions.Add(coldef);

        //do this for each row
        RowDefinition rowdef;
        rowdef = new RowDefinition();
        rowdef.Height = new GridLength(1, GridUnitType.Auto);
        grid.RowDefinitions.Add(rowdef);
        //
        rowdef = new RowDefinition();
        rowdef.Height = new GridLength(1, GridUnitType.Auto);
        grid.RowDefinitions.Add(rowdef);

        TextBlock myTitle = new TextBlock();
        myTitle.FontSize = 24;
        myTitle.FontFamily = new FontFamily("Arial");
        myTitle.TextAlignment = TextAlignment.Center;
        myTitle.Text = myName;

        grid.Children.Add(myTitle);
        //put it in column 0, row 0
        Grid.SetColumn(myTitle, 0);
        Grid.SetRow(myTitle, 0);

        Image myImage = new Image();
        RenderTargetBitmap bmp = new RenderTargetBitmap((int)this.Width, (int)this.Height, 96, 96, PixelFormats.Pbgra32);
        bmp.Render(myViewPort);

        myImage.Source = bmp;
        myImage.Stretch = Stretch.Uniform;

        grid.Children.Add(myImage);
        //put it in column 0, row 1
        Grid.SetColumn(myImage, 0);
        Grid.SetRow(myImage, 1);

        grid.Measure(new Size(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight));
        grid.Arrange(new Rect(new Point(0, 0), grid.DesiredSize));

        dialog.PrintVisual(grid, myName);