public HtmlScreenCaptureForm(HtmlScreenCaptureCore htmlScreenCaptureCore)
{
// save reference to parent object
_htmlScreenCaptureCore = htmlScreenCaptureCore;
// set the timeout time
_timeoutTime = DateTime.Now.AddMilliseconds(_htmlScreenCaptureCore.TimeoutMs);
// create and add the underlying browser control
_browserControl = new ExplorerBrowserControl();
_browserControl.Silent = true;
Controls.Add(_browserControl);
}
private static Bitmap GetElementPreviewImage(IHTMLDocument3 doc3, IHTMLElement element, int snapshotWidth, int snapshotHeight)
{
try
{
// @RIBBON TODO: Need to make this work for RTL as well.
IDisplayServices displayServices = ((IDisplayServices)doc3);
element.scrollIntoView(true);
tagPOINT offset = new tagPOINT();
offset.x = 0;
offset.y = 0;
displayServices.TransformPoint(ref offset, _COORD_SYSTEM.COORD_SYSTEM_CONTENT, _COORD_SYSTEM.COORD_SYSTEM_GLOBAL, element);
using (Bitmap snapshotAfter = HtmlScreenCaptureCore.TakeSnapshot((IViewObject)doc3, snapshotWidth, snapshotHeight))
{
//snapshotAfter.Save(@"c:\temp\snapshot" + element.id + ".bmp");
Rectangle elementRect;
elementRect = new Rectangle(Math.Max(2, offset.x), 2, Math.Min(element.offsetWidth, element.offsetParent.offsetWidth), element.offsetHeight);
if (element.offsetWidth <= 0 || element.offsetHeight <= 0)
{
return(null);
}
Bitmap cropped = ImageHelper2.CropBitmap(snapshotAfter, elementRect);
//cropped.Save(@"c:\temp\snapshot" + element.id + ".cropped.bmp");
return(cropped);
}
}
catch (Exception ex)
{
Trace.Fail("Failed to get element preview image for id " + element.id + ": " + ex);
return(null);
}
}
public HtmlScreenCaptureForm(HtmlScreenCaptureCore htmlScreenCaptureCore)
{
// save reference to parent object
_htmlScreenCaptureCore = htmlScreenCaptureCore;
// set the timeout time
_timeoutTime = DateTime.Now.AddMilliseconds(_htmlScreenCaptureCore.TimeoutMs);
// create and add the underlying browser control
_browserControl = new ExplorerBrowserControl();
_browserControl.Silent = true;
Controls.Add(_browserControl);
}
private void timer_Tick(object sender, EventArgs e)
{
if (reentrant)
{
return;
}
reentrant = true;
Timer timer = null;
try
{
timer = sender as Timer;
IHTMLDocument2 document = _browserControl.Document as IHTMLDocument2;
// make sure the document is ready
if (!DocumentReady(document))
{
if (TimedOut)
{
CleanupAndExit(timer);
}
return;
}
if (Ids != null)
{
IHTMLDocument3 doc3 = document as IHTMLDocument3;
foreach (string elementId in Ids)
{
IHTMLStyle3 style3 = (IHTMLStyle3)(doc3.getElementById(elementId)).style;
style3.wordWrap = "normal";
}
int originalWidth = _browserControl.Width;
int originalHeight = _browserControl.Height;
foreach (string elementId in Ids)
{
try
{
IHTMLElement element = doc3.getElementById(elementId);
_browserControl.Height = element.offsetHeight + 2 + 2;
element.scrollIntoView(true);
Padding padding = HTMLElementHelper.PaddingInPixels(element);
Color backgroundColor = HTMLColorHelper.GetBackgroundColor(element, true, null, Color.White);
using (Bitmap elementBitmap = GetElementPreviewImage(doc3, element, _browserControl.Width, _browserControl.Height))
{
_htmlScreenCaptureCore.SetElementCaptureProperties(elementId, elementBitmap, backgroundColor, padding);
}
}
catch (Exception ex)
{
Trace.Fail("Failed to capture element " + elementId + ": " + ex);
}
}
// Restore the browser control size
_browserControl.Width = originalWidth;
_browserControl.Height = originalHeight;
}
// fire event to see if the Bitmap is ready
using (Bitmap bitmap = HtmlScreenCaptureCore.TakeSnapshot((IViewObject)_browserControl.Document, _browserControl.Width, _browserControl.Height))
{
HtmlScreenCaptureAvailableEventArgsCore ea = new HtmlScreenCaptureAvailableEventArgsCore(bitmap);
_htmlScreenCaptureCore.FireHtmlScreenCaptureAvailable(ea);
if (ea.CaptureCompleted)
{
// provide the bitmap to our parent object
_htmlScreenCaptureCore.SetCapturedBitmap(bitmap);
//bitmap.Save(@"c:\temp\captured.bmp");
// exit
CleanupAndExit(timer);
}
else if (TimedOut) // if we have timed out then exit
{
CleanupAndExit(timer);
}
// otherwise just let the Timer call us again
// at the next interval...
}
}
catch (Exception ex)
{
_htmlScreenCaptureCore.SetException(ex);
CleanupAndExit(timer);
}
finally
{
reentrant = false;
}
}
/// <summary>
/// Initialize a screen capture for a snippet of HTML content.
/// </summary>
/// <param name="htmlContent">HTML snippet to capture.</param>
/// <param name="contentWidth">Width of content.</param>
public HtmlScreenCapture(string htmlContent, int contentWidth)
{
_htmlScreenCapture = new HtmlScreenCaptureCore(htmlContent, contentWidth);
SubscribeToEvents();
}
/// <summary>
/// Initialize a screen capture for an HTML page located at a URL.
/// </summary>
/// <param name="url">Url of HTML page to capture.</param>
/// <param name="contentWidth">Width of content.</param>
public HtmlScreenCapture(Uri url, int contentWidth)
{
_htmlScreenCapture = new HtmlScreenCaptureCore(url, contentWidth);
SubscribeToEvents();
}
private static Color GetBackgroundColorFromPixel(IHTMLElement e)
{
IHTMLElement divElement = (e.document as IHTMLDocument2).createElement("div");
divElement.id = Guid.NewGuid().ToString();
divElement.style.padding = "10px 10px 10px 10px";
divElement.style.width = "100px";
divElement.style.height = "100px";
(e as IHTMLDOMNode).appendChild((IHTMLDOMNode)divElement);
string documentHtml = HTMLDocumentHelper.HTMLDocToString(e.document as IHTMLDocument2);
(e as IHTMLDOMNode).removeChild((IHTMLDOMNode)divElement);
HtmlScreenCaptureCore screenCapture = new HtmlScreenCaptureCore(documentHtml, 800);
DocumentSnapshotHandler snapshotHandler = new DocumentSnapshotHandler(divElement.id);
screenCapture.HtmlDocumentAvailable += new HtmlDocumentAvailableHandlerCore(snapshotHandler.HtmlDocumentAvailable);
Bitmap docImage = screenCapture.CaptureHtml(3000);
using (Graphics g = Graphics.FromImage(docImage))
{
Rectangle rect = snapshotHandler.rect;
g.DrawRectangle(new Pen(Color.Blue, 1), rect);
}
using (FileStream fs = new FileStream(@"c:\temp\docImage.png", FileMode.Create))
{
docImage.Save(fs, ImageFormat.Png);
}
Color c = docImage.GetPixel(snapshotHandler.rect.X + 5, snapshotHandler.rect.Y + 5);
return c;
}
