private void InvalidateAndRender()
{
try
{
renderer.Render(window.Document as SvgDocument);
}
catch (Exception e)
{
MessageBox.Show("An exception occurred while rendering: " + e.Message);
}
}
private void InvalidateAndRender()
{
try
{
if (_svgRenderer != null)
{
SvgSvgElement svgEl = (SvgSvgElement)_svgWindow.Document.RootElement;
SvgSizeF r = svgEl.GetSize();
int winWidth = (int)svgEl.Width.BaseVal.Value;
int winHeight = (int)svgEl.Height.BaseVal.Value;
if (!r.Width.Equals(0.0) && !r.Height.Equals(0.0) && (r.Width * 4 * r.Height) < BitmapLimit)
{
winWidth = (int)r.Width;
winHeight = (int)r.Height;
}
if ((winWidth * 4 * winHeight) >= BitmapLimit)
{
winWidth = this.Width;
winHeight = this.Height;
}
_svgWindow.Resize(winWidth, winHeight);
_svgRenderer.Render(_svgWindow.Document as SvgDocument);
}
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
if (this.DesignMode)
{
return;
}
var errorArgs = new SvgErrorArgs("An exception occurred while rendering", ex);
_svgErrors?.Invoke(this, errorArgs);
if (!errorArgs.Handled)
{
MessageBox.Show(errorArgs.Message + ": " + ex.Message,
_appTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
/// <summary>
/// The following code will load the SVGDOM, render to a emf, and
/// place the EMF on the clipboard. Kt seems more complicated than it should
/// see http://www.dotnet247.com/247reference/msgs/23/118514.aspx
/// for why the straight forward solution does not work.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void miCopy_Click(object sender, EventArgs e)
{
if (svgUrlCombo.Text.Length > 0)
{
int width = 500;
int height = 500;
// make SVG document with associated window so we can render it.
SvgWindow window = new SvgPictureBoxWindow(width, height, null);
GdiGraphicsRenderer renderer = new GdiGraphicsRenderer();
renderer.Window = window;
window.Renderer = renderer;
window.Source = svgUrlCombo.Text;
// copy and paste code taken from
// http://www.dotnet247.com/247reference/msgs/23/117611.aspx
// putting a plain MetaFile on the clipboard does not work.
// .Net's metafile format is not recognised by most programs.
Graphics g = CreateGraphics();
IntPtr hdc = g.GetHdc();
Metafile m = new Metafile(hdc, EmfType.EmfOnly);
g.ReleaseHdc(hdc);
g.Dispose();
g = Graphics.FromImage(m);
// draw the SVG here
// NOTE: the graphics object is automatically Disposed by the
// GdiRenderer.
renderer.Graphics = g;
renderer.Render(window.Document as SvgDocument);
//window.Render();
// put meta file on the clipboard.
IntPtr hwnd = this.Handle;
if (Win32.OpenClipboard(hwnd))
{
Win32.EmptyClipboard();
IntPtr hemf = m.GetHenhmetafile();
Win32.SetClipboardData(14, hemf); //CF_ENHMETAFILE=14
Win32.CloseClipboard();
}
}
}
public bool LoadDocument(string documentFilePath, SvgTestInfo testInfo, object extraInfo)
{
this.UnloadDocument();
if (extraInfo == null)
{
return(false);
}
if (string.IsNullOrWhiteSpace(documentFilePath) || File.Exists(documentFilePath) == false)
{
return(false);
}
var pngFilePath = extraInfo.ToString();
if (string.IsNullOrWhiteSpace(pngFilePath) || File.Exists(pngFilePath) == false)
{
return(false);
}
Image pngImage = null;
try
{
pngImage = Image.FromFile(pngFilePath);
if (pngImage == null)
{
return(false);
}
viewerExpected.Image = pngImage;
viewerExpected.Width = pngImage.Width + 10;
viewerExpected.Height = pngImage.Height + 10;
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
return(false);
}
try
{
_svgWindow = new SvgPictureBoxWindow(pngImage.Width, pngImage.Height, _svgRenderer);
_svgWindow.Source = documentFilePath;
var svgImage = new Bitmap(pngImage.Width, pngImage.Height);
using (var graWrapper = GdiGraphicsWrapper.FromImage(svgImage, true))
{
_svgRenderer.GraphicsWrapper = graWrapper;
_svgRenderer.Render(_svgWindow.Document);
_svgRenderer.GraphicsWrapper = null;
}
viewerConverted.Image = svgImage;
viewerConverted.Width = svgImage.Width + 10;
viewerConverted.Height = svgImage.Height + 10;
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
return(false);
}
return(true);
}
public bool LoadDocument(string documentFilePath, SvgTestInfo testInfo, object extraInfo)
{
this.UnloadDocument();
if (extraInfo == null)
{
return(false);
}
if (string.IsNullOrWhiteSpace(documentFilePath) || File.Exists(documentFilePath) == false)
{
return(false);
}
var pngFilePath = extraInfo.ToString();
if (string.IsNullOrWhiteSpace(pngFilePath) || File.Exists(pngFilePath) == false)
{
return(false);
}
Image pngImage = null;
try
{
pngImage = Image.FromFile(pngFilePath);
if (pngImage == null)
{
return(false);
}
viewerExpected.Image = pngImage;
viewerExpected.Width = pngImage.Width + 10;
viewerExpected.Height = pngImage.Height + 10;
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
return(false);
}
try
{
using (var svgRenderer = new GdiGraphicsRenderer(pngImage.Width, pngImage.Height))
{
var svgWindow = svgRenderer.Window;
svgWindow.Source = documentFilePath;
svgRenderer.Render(svgWindow.Document);
var svgImage = svgRenderer.RasterImage;
viewerConverted.Image = svgImage;
viewerConverted.Width = svgImage.Width + 10;
viewerConverted.Height = svgImage.Height + 10;
}
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
return(false);
}
return(true);
}