/// <summary>
/// Constructor
/// </summary>
public HelmOffScreenBrowserCef()
{
CefMx.InitializeOffScreenCef();
if (Debug)
{
DebugLog.Message("CefOffScreenMx instance created");
}
return;
}
/// <summary>
/// Get SVG of the specified HELM in the specified size
/// </summary>
/// <param name="helm"></param>
/// <param name="size"></param>
/// <returns></returns>
public string GetSvg(
string helm,
Size size)
{
ManualResetEvent GetSvgEvent = new ManualResetEvent(false);
string svg = null;
Initialize();
if (Debug)
{
DebugLog.Message("GetSvg Entered: " + helm + ", " + size);
}
Stopwatch sw = Stopwatch.StartNew();
Helm = helm;
CurrentSize = size;
int initialOnPaintCount = OnPaintCount; // save current paint count so we can tell when page has been re-rendered with new image
string script = "";
if (!String.IsNullOrWhiteSpace(helm))
{
script += "jsd.setHelm(\"" + helm + "\");";
}
if (!size.IsEmpty)
{
int width = size.Width;
int height = size.Height;
if (height <= 0)
{
height = width;
}
script += "jsd.setSize(" + width + "," + height + ");";
}
script += "jsd.refresh();"; // redraws the structure
script += "jsd.getSvg();";
svg = CefMx.ExecuteStringResultJavaScript(OffScreenBrowser, script);
GetSvgCount++;
if (Debug)
{
DebugLog.StopwatchMessage("GetSvg Complete, Time: ", sw);
}
return(svg);
}
/// <summary>
/// Constructor
/// </summary>
public HelmWinFormsBrowserCef(
HelmControlMode renderMode,
Control containingControl)
{
CefMx.InitializeCef();
RendererMode = renderMode;
if (renderMode == HelmControlMode.OffScreenSvg)
{
Browser = new CefSharp.WinForms.ChromiumWebBrowser(""); // Create the Chromium browser to contain the generated SVG
Browser.FrameLoadEnd += OnFrameLoadEnd; // used to remove scroll bars
}
ContainingControl = containingControl;
if (Debug)
{
DebugLog.Message("CefWinFormsMx instance created");
}
return;
}
public void SetHelmAndRender(
string helm,
Size size = new Size())
{
string script = "";
Helm = helm;
if (RendererMode == HelmControlMode.BrowserViewOnly)
{
if (!String.IsNullOrWhiteSpace(helm))
{
script += "jsd.setHelm(\"" + helm + "\");"; // var jsd = new JSDraw(...) is JSDraw canvas object JavaScript variable
}
if (!size.IsEmpty)
{
script += "jsd.setSize(" + size.Width + "," + size.Height + ");";
}
script += "jsd.refresh();"; // redraws the structure
}
else // editor mode
{
script += // set the helm allowing for blank helm to clear the structure
"app.canvas.setHelm(\"" + helm + "\");"; // var app = new scil.helm.App(), app.canvas is JSDraw canvas object
//if (!size.IsEmpty)
// script += "app.canvas.setSize(" + scaledCanvasWidth + "," + scaledCanvasHeight + ");";
script += "app.canvas.refresh();"; // redraws the structure
}
CefMx.ExecuteJavaScript(Browser, script);
return;
}
/// <summary>
/// Execute JavaScript that returns a string result
/// </summary>
/// <param name="script"></param>
/// <returns></returns>
public string ExecuteStringResultJavaScript(
string script)
{
return(CefMx.ExecuteStringResultJavaScript(Browser, script));
}
/// <summary>
/// Execute JavaScript that return a string result
/// </summary>
/// <param name="script"></param>
/// <returns></returns>
public static string ExecuteStringResultJavaScript(
IWebBrowser browser,
string script)
{
return(CefMx.ExecuteStringResultJavaScript(browser, script));
}