/// <summary>
/// Callback function for WebBrowser DocumentCompleted event. Once the local HTML file has been
/// loaded and rendered, this function will be called to take and save a screenshot of the rendered
/// site. Note that the HTML file is deleted after the image file is created.
/// </summary>
/// <param name="sender">Object that generated the event that called this callback function</param>
/// <param name="e">Additional arguments passed to the callback function</param>
void OnDocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
//Get WebBrowser object, create a new bitmap object, set resolution,
//set filetype (JPEG), and save the file.
WebBrowser browser = (WebBrowser)sender;
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
browser.DrawToBitmap(bitmap, bounds);
Bitmap resized = new Bitmap(bitmap, new Size(bitmap.Width, bitmap.Height));
String filename = String.Format("{0}.jpeg", browser.Name);
resized.Save(filename, ImageFormat.Jpeg);
}
//Delete the temporary HTML file that was created in the ScreenShot method
string curDir = Directory.GetCurrentDirectory();
File.Delete(String.Format("{0}/{1}.html", curDir, browser.Name));
//Decrement the number of active threads
lock (_lockObject)
{
_threadsActive -= 1;
}
//Allow the thread to exit and the objects to be destroyed
Application.ExitThread();
}
static void Main()
{
int width = 800;
int height = 600;
using (WebBrowser browser = new WebBrowser())
using (ManualResetEvent completed = new ManualResetEvent(false))
{
browser.Width = width;
browser.Height = height;
browser.ScrollBarsEnabled = true;
browser.DocumentCompleted += (o, e) => completed.Set();
browser.Navigate("http://stackoverflow.com/");
while (!completed.WaitOne(TimeSpan.FromMilliseconds(100.0d)))
{
Application.DoEvents();
}
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(width, height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, width, height);
browser.DrawToBitmap(bitmap, bounds);
bitmap.Save("screenshot.bmp", ImageFormat.Bmp);
}
}
}
public void OnDocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
// Now that the page is loaded, save it as a png
//If for some reason the pages document complete function was called more than once just take one picture
if (this.count < 1)
{
WebBrowser browser = (WebBrowser)sender;
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
browser.DrawToBitmap(bitmap, bounds);
Guid guid = Guid.NewGuid();
string fname = Convert.ToString(guid) + ".png";
string fLoc = "/Snaps/" + fname;
//if bookmark added to server, save picture of the site
if (addToBookmarks(fname, fLoc, currentUrl))
{
bitmap.Save(Path.Combine(System.Web.Hosting.HostingEnvironment.MapPath("~/Snaps/"), fname), ImageFormat.Png);
}
this.count++;
this.incomplete = false;
}
Console.WriteLine("Capture completed.");
}
//exit the function without taking snap
else
{
return;
}
}
/// <summary>
///保存网页图片到指定路径
/// </summary>
/// <param name="save_path">路径</param>
public void save_wb_image(WebBrowser wb, string save_path)
{
//Bitmap bit = SnapWeb(wb);
string time_str = DateTime.Now.ToString("yyyyMMddHHmmss");
//bit.Save(save_path + time_str + ".png");
//bit.Dispose();
// int height = wb.Height; //;
// int width = wb.Width; //;
// Bitmap bit = new Bitmap(width, height);//实例化一个和窗体一样大的bitmap
// Graphics g = Graphics.FromImage(bit);
//// g.CompositingQuality = CompositingQuality.HighQuality;//质量设为最高
// var screenPoint = wb.PointToScreen(wb.Location);
// g.CopyFromScreen(wb.PointToScreen(wb.Location), Point.Empty, wb.Size);//保存整个窗体为图片
// //g.CopyFromScreen(panel游戏区 .PointToScreen(Point.Empty), Point.Empty, panel游戏区.Size);//只保存某个控件（这里是panel游戏区）
// bit.Save(save_path + time_str + ".png");//默认保存格式为PNG，保存成jpg格式质量不是很好
// bit.Dispose();
//获得当前屏幕的大小
Rectangle rect = new Rectangle();
rect = Screen.GetWorkingArea(wb);
//创建一个以当前屏幕为模板的图象
Graphics g1 = wb.CreateGraphics();
//创建以屏幕大小为标准的位图
Image myImage = new Bitmap(wb.Width, wb.Height, g1);
Graphics g2 = Graphics.FromImage(myImage);
//得到屏幕的DC
IntPtr dc1 = g1.GetHdc();
//得到Bitmap的DC
IntPtr dc2 = g2.GetHdc();
//调用此API函数，实现屏幕捕获
BitBlt(dc2, 0, 0, rect.Width, rect.Height, dc1, wb.Location.X, wb.Location.Y, 13369376);
//释放掉屏幕的DC
g1.ReleaseHdc(dc1);
//释放掉Bitmap的DC
g2.ReleaseHdc(dc2);
myImage.Save(save_path + time_str + ".png", ImageFormat.Png);
}
static void OnDocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
// Now that the page is loaded, save it to a bitmap
WebBrowser browser = (WebBrowser)sender;
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
browser.DrawToBitmap(bitmap, bounds);
bitmap.Save("screenshot.bmp", ImageFormat.Bmp);
}
// Instruct the application to exit
Application.Exit();
}
static void OnDocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
// Now that the page is loaded, save it to a bitmap
WebBrowser browser = (WebBrowser)sender;
var res = browser.DocumentText;
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
browser.DrawToBitmap(bitmap, bounds);
var urlName = browser.Url.ToString();
string file = Path + "" + filename;
bitmap.Save(file, ImageFormat.Jpeg);
Console.WriteLine(browser.Url.ToString());
}
System.Environment.Exit(1);
}
//TODO add the feature to capture the whole page not just the top of the page..use a scroll to do this
static void OnDocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WriteLog("In on document completed ");
//Store the following
// - jpeg - fullview . the entire page
// - jpeg quickview. just the first page
//save the browser object
//save the html, we also need to save the other resources like css/js/images
// Now that the page is loaded, save it to a bitmap
WebBrowser browser = (WebBrowser)sender;
//browser.DocumentText
// browser.DocumentStream
string sHtmlName = ConfigurationManager.AppSettings["path.htmlfiles"] + ReferenceId + "_" + "source.html";
File.WriteAllText(sHtmlName, browser.DocumentText, Encoding.UTF8);
string sScreenshotName = ConfigurationManager.AppSettings["path.screenshotfiles"] + ReferenceId + "_" + "screenshot.jpg";
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
browser.DrawToBitmap(bitmap, bounds);
bitmap.Save(sScreenshotName, ImageFormat.Jpeg);
}
//we need something for the retries..we want to do 5 retries and then give up. the user needs a way to know if the screen nailer isn't working
if (File.Exists(sHtmlName) && File.Exists(sScreenshotName))//We don't really know if the jpeg is processed correctly. we need something ot open it and analyze to make sure it is really processed
{
new ScrurRepository().SetScreenNailerProcessed(Convert.ToInt32(ScreenNailerId));
}
else
{
//todo insert retries until we get to 5 try's
}
// Instruct the application to exit
Application.Exit();
}
static void Main()
{
int width = 800;
int height = 600;
using (WebBrowser browser = new WebBrowser())
using (ManualResetEvent completed = new ManualResetEvent(false))
{
browser.Width = width;
browser.Height = height;
browser.ScrollBarsEnabled = true;
// We will set the event when the page is finished loading
browser.DocumentCompleted += (o, e) => completed.Set();
browser.Navigate("http://stackoverflow.com/");
// Now we need to wait for the event to be set; this is
// tricky because we are basically single threaded so we
// can't just block and wait for it to complete. Instead
// we will periodically wait and then allow the app to
// process other events in the background. This should
// ensure that the web page actually finishes loading in
// the background.
while (!completed.WaitOne(TimeSpan.FromMilliseconds(100.0d)))
{
Application.DoEvents();
}
// Now that the page is loaded, we can draw it to a bitmap
// and save it in the format of our choice.
using (Graphics graphics = browser.CreateGraphics())
using (Bitmap bitmap = new Bitmap(width, height, graphics))
{
Rectangle bounds = new Rectangle(0, 0, width, height);
browser.DrawToBitmap(bitmap, bounds);
bitmap.Save("screenshot.bmp", ImageFormat.Bmp);
}
}
}
