public void Stop()
{
if (htmlViewHandle != IntPtr.Zero)
{
WebBrowserAPI.SendMessage(htmlViewHandle, WebBrowserAPI.DTM_STOP, 0, 0);
}
}
public void SetScrolPosition(int value)
{
WebBrowserAPI.SCROLLINFO lpScrollInfo = new WebBrowserAPI.SCROLLINFO();
lpScrollInfo.cbSize = (uint)System.Runtime.InteropServices.Marshal.SizeOf(lpScrollInfo);
lpScrollInfo.fMask = WebBrowserAPI.SIF_POS;
lpScrollInfo.nPos = value;
WebBrowserAPI.SetScrollInfo(htmlViewHandle, WebBrowserAPI.SB_VERT, ref lpScrollInfo, true);
Rectangle update = new Rectangle();
WebBrowserAPI.GetClientRect(htmlViewHandle, ref update);
WebBrowserAPI.ScrollWindowEx(htmlViewHandle, 0, -(value), 0, 0, IntPtr.Zero, update, WebBrowserAPI.SW_ERASE | WebBrowserAPI.SW_INVALIDATE);
}
protected override void OnParentChanged(EventArgs e)
{
base.OnParentChanged(e);
var style = (int)(WebBrowserAPI.WS_VISIBLE | WebBrowserAPI.WS_TABSTOP | WebBrowserAPI.WS_CHILD | WebBrowserAPI.HS_NOSELECTION);
htmlViewHandle = WebBrowserAPI.CreateWindowEx(0, "DISPLAYCLASS", null, style, 0, 0, Width, Height, Handle,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
//WmApi.SendMessage(htmlViewHandle, WmApi.DTM_ENABLECONTEXTMENU, 0, 1);
hwnd = Handle;
newWndProc = new WndProcDelegate(NewWndProc);
oldWndProc = WebBrowserAPI.GetWindowLong(hwnd, WebBrowserAPI.GWL_WNDPROC);
int success = WebBrowserAPI.SetWindowLong(hwnd, WebBrowserAPI.GWL_WNDPROC, newWndProc);
}
private IntPtr NewWndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
switch (msg)
{
case WebBrowserAPI.WM_NOTIFY:
WebBrowserAPI.NmHdr n = WebBrowserAPI.NmHdr.GetStruct(lParam);
switch (n.code)
{
case WebBrowserAPI.NM_INLINE_IMAGE:
OnInlineObject(WebBrowserAPI.NM_INLINE_IMAGE, WebBrowserAPI.HtmlViewMessage.GetStruct(lParam));
break;
case WebBrowserAPI.NM_BEFORENAVIGATE:
OnBeforeNavigate(WebBrowserAPI.HtmlViewMessage.GetStruct(lParam));
break;
case WebBrowserAPI.NM_NAVIGATECOMPLETE:
OnNavigateComplete(WebBrowserAPI.HtmlViewMessage.GetStruct(lParam));
break;
case WebBrowserAPI.NM_DOCUMENTCOMPLETE:
OnDocumentComplete(WebBrowserAPI.HtmlViewMessage.GetStruct(lParam));
break;
//case WebBrowserAPI.NM_CONTEXTMENU:
// WebBrowserAPI.HtmlContextMessage hcm = WebBrowserAPI.HtmlContextMessage.GetStruct(lParam);
// string lnk = hcm.linkHREF;
// string tit = hcm.linkName;
// System.Drawing.Point pt = hcm.pt;
// OnContextMenu(hcm);
// break;
case WebBrowserAPI.NM_HOTSPOT:
if (OnHotSpotClicked(WebBrowserAPI.HtmlViewMessage.GetStruct(lParam)))
{
// return not zero value to not let pass message to the parent control
return(new IntPtr(1));
}
break;
}
break;
}
return(WebBrowserAPI.CallWindowProc(oldWndProc, hWnd, msg, wParam, lParam));
}
public void Navigate(string url)
{
Stop();
if (url == null || url.Trim().Length == 0)
{
return;
}
//if (!String.IsNullOrEmpty(SpecialUrlParams))
//{
// if (url.IndexOf('?') > 0)
// url += "&" + SpecialUrlParams;
// else
// url += "?" + SpecialUrlParams;
//}
_url = new Uri(url);
WebBrowserAPI.SendMessage(htmlViewHandle, WebBrowserAPI.DTM_NAVIGATE, WebBrowserAPI.NAVIGATEFLAG_NOCACHE, url);
}
protected override void OnHandleDestroyed(EventArgs e)
{
Stop();
base.OnHandleDestroyed(e);
if (oldWndProc != IntPtr.Zero && hwnd != IntPtr.Zero)
{
WebBrowserAPI.SetWindowLong(hwnd, WebBrowserAPI.GWL_WNDPROC, oldWndProc);
}
Marshal.Release(htmlViewHandle);
if (htmlViewHandle != IntPtr.Zero)
{
if (WebBrowserAPI.DestroyWindow(htmlViewHandle))
{
htmlViewHandle = IntPtr.Zero;
GC.Collect();
}
}
}
public WebBrowserEx()
{
InitializeComponent();
WebBrowserAPI.InitializeHtmlView();
}
public void SetScrollAnchor(string anchor)
{
WebBrowserAPI.SendMessage(htmlViewHandle, WebBrowserAPI.DTM_ANCHORW, 0, anchor);
}
public void SetScrollEnd()
{
WebBrowserAPI.SendMessage(htmlViewHandle, WebBrowserAPI.WM_VSCROLL, WebBrowserAPI.SB_BOTTOM, 0);
}
private void OnNavigateComplete(WebBrowserAPI.HtmlViewMessage message)
{
//string url = UnicodeToUtf8(message.target);
//if (url.Substring(0, 5) == "http:")
//{
// Stop();
// Navigate(_url.ToString());
// return;
//}
if (NavigateComplete != null)
{
NavigateComplete(message);
}
}
private void OnInlineObject(int notifyCode, WebBrowserAPI.HtmlViewMessage htmlViewMessage)
{
if (ShowWaitCursorWhileLoading)
Cursor.Current = Cursors.WaitCursor;
}
/// <summary>
///
/// </summary>
/// <param name="msg"></param>
/// <returns>true if message was processed</returns>
private bool OnHotSpotClicked(WebBrowserAPI.HtmlViewMessage msg)
{
Stop();
if (msg.target == null)
return true;
try
{
string escapedUrl = Uri.EscapeUriString(PrepareUrl(UnicodeToUtf8(msg.target)));
string target = null;
int idig = escapedUrl.IndexOf('#');
if (idig > -1)
{
target = escapedUrl.Substring(idig, escapedUrl.Length - idig);
escapedUrl = escapedUrl.Substring(0, idig);
}
Uri uri = null;
try
{
uri = new Uri(escapedUrl);
}
catch (UriFormatException)
{ }
if (uri == null || String.IsNullOrEmpty(uri.Host))
{
try
{
uri = new Uri(_url, escapedUrl);
}
catch (UriFormatException)
{ }
}
string postdata = null;
if (msg.data != null && msg.data.Length > 0)
postdata = UnicodeToUtf8(msg.data);
WebBrowserNavigatingExEventArgs e = new WebBrowserNavigatingExEventArgs(uri, target, postdata);
if (Navigating != null)
{
Navigating(this, e);
if (!e.Cancel)
return false;
}
}
catch (UriFormatException)
{
return true;
}
catch (Exception)
{
return true;
}
return true;
}
private void OnDocumentComplete(WebBrowserAPI.HtmlViewMessage message)
{
Debug.WriteLine("WebBrowser.OnDocumentComplete");
if (ShowWaitCursorWhileLoading)
Cursor.Current = Cursors.Default;
if (DocumentComplete != null)
{
DocumentComplete(message);
//Из за увеличения размеров при VGA в браузере вручную ставим в 0
//if(ListViewSettings.Current.ScreenDPI >= 192)
// ZoomLevel = 0;
}
}
//private void OnContextMenu(WebBrowserAPI.HtmlContextMessage message)
//{
// string lnk = message.linkHREF;
// string tit = message.linkName;
//}
private void OnBeforeNavigate(WebBrowserAPI.HtmlViewMessage message)
{
if (ShowWaitCursorWhileLoading)
Cursor.Current = Cursors.WaitCursor;
if (BeforeNavigate != null)
{
BeforeNavigate(message);
}
}
private void ViewWebBrowserDocumentComplete(WebBrowserAPI.HtmlViewMessage message)
{
ActivateMenuButtons();
ViewData["DocumentCompleteUrl"] = message.Url;
OnViewStateChanged("DocumentCompleted");
}
