public Bitmap getFirstImage()
{
Logger.Info("Start get Image");
IHTMLDocument2 doc = (IHTMLDocument2)webBrowser.Document.DomDocument;
foreach (IHTMLImgElement img in doc.images)
{
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bmp = new Bitmap(img.width, img.height);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
Logger.Info("Stop get Image");
return(bmp);
//bmp.Save(@"C:\nameProp.bmp");
//imgRange.add((IHTMLControlElement)img);
//imgRange.execCommand("Copy", false, null);
//using (Bitmap bmp = (Bitmap)Clipboard.GetDataObject().GetData(DataFormats.Bitmap))
//{
// bmp.Save(@"C:\" + img.nameProp);
//}
}
return(null);
}
public static Image CopyImageAlt(WebBrowser webBrowser, HtmlElement elem)
{
IHTMLImgElement img = (IHTMLImgElement)elem.DomElement;
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bmp = new Bitmap(elem.OffsetRectangle.Width, elem.OffsetRectangle.Height);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
return(bmp);
}
public Bitmap GetImage(IHTMLImgElement img)
{
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bmp = new Bitmap(img.width, img.height);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
return(bmp);
}
/// <summary>
/// 使用该方法获取图片时，可能无法获取到图片的原始尺寸，只能获取其在网页中所显示的尺寸，因此可能会被缩小或放大过了。
/// </summary>
/// <param name="imgTag">img元素</param>
/// <returns>图片</returns>
public static Bitmap 通过区域截屏技术获取图片(this HtmlElement imgTag)
{
IHTMLImgElement img = (IHTMLImgElement)imgTag.DomElement;
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bmp = new Bitmap(imgTag.OffsetRectangle.Width, imgTag.OffsetRectangle.Height);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
return(bmp);
}
public Bitmap GetImage(string id)
{
HtmlElement e = webBrowser.Document.GetElementById(id);
IHTMLImgElement img = (IHTMLImgElement)e.DomElement;
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bmp = new Bitmap(e.OffsetRectangle.Width, e.OffsetRectangle.Height);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
return(bmp);
}
public Bitmap getFirstImage()
{
IHTMLDocument2 doc = (IHTMLDocument2)webBrowser1.Document.DomDocument;
foreach (IHTMLImgElement img in doc.images)
{
if (img.readyState == "uninitialized")
{
throw new Exception("Cupture Img is not shown");
}
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bmp = new Bitmap(img.width, img.height);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
return(bmp);
}
return(null);
}
public void SaveImageFromElement(string xpath, string path)
{
Bitmap bmp = null;
WebBrowser wb = (WebBrowser)GetCurrentWB();
if (wb != null)
{
HtmlElement e = GetElementByXpath(wb.Document, xpath);
if (e != null)
{
mshtml.IHTMLElement element = (mshtml.IHTMLElement)e.DomElement;
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)element;
bmp = new Bitmap(element.offsetWidth, element.offsetHeight);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
bmp.Save(path);
}
}
}
private void Timer_Tick(object sender, EventArgs e)
{
try
{
timer.Enabled = false;
if (webBrowser.Document != null && (webBrowser.ReadyState == WebBrowserReadyState.Complete || webBrowser.ReadyState == WebBrowserReadyState.Interactive))
{
HtmlElementCollection elements = webBrowser.Document.GetElementsByTagName("img");
if (elements != null && elements.Count > 0)
{
//Monitor.Enter(lockObject);
IHTMLImgElement img = (IHTMLImgElement)elements[0].DomElement;
IHTMLElementRenderFixed render = (IHTMLElementRenderFixed)img;
Bitmap bitmap = new Bitmap(img.width, img.height);
Graphics g = Graphics.FromImage(bitmap);
IntPtr hdc = g.GetHdc();
render.DrawToDC(hdc);
g.ReleaseHdc(hdc);
using (MemoryStream memoryStream = new MemoryStream())
{
bitmap.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Jpeg);
this.CaptureImage = memoryStream.ToArray();
}
}
}
}
catch (Exception exc)
{
Logger.E(exc);
}
finally
{
//Monitor.Exit(lockObject);
webBrowser.Refresh();
timer.Enabled = true;
}
}
