CodeMirror/ShareX
1
0
Fork 0
mirror of https://github.com/ShareX/ShareX.git synced 2024-10-01 09:47:22 +13:00
Code Issues Projects Releases Packages Wiki Activity

Workaround for DrawToBitmap issue

Browse source
This commit is contained in:
Jaex 2015-06-27 16:08:20 +03:00
parent 81e7aa24d5
commit 370c758b12
2 changed files with 58 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
ShareX.HelpersLib/Native/NativeStructs.cs
View file

@ -591,4 +591,12 @@ public struct HARDWAREINPUT
public short wParamL;
public short wParamH;
}
[ComImport]
[Guid("0000010D-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IViewObject
{
void Draw([MarshalAs(UnmanagedType.U4)] uint dwAspect, int lindex, IntPtr pvAspect, [In] IntPtr ptd, IntPtr hdcTargetDev, IntPtr hdcDraw, [MarshalAs(UnmanagedType.Struct)] ref RECT lprcBounds, [In] IntPtr lprcWBounds, IntPtr pfnContinue, [MarshalAs(UnmanagedType.U4)] uint dwContinue);
}
}

70
ShareX.ScreenCaptureLib/WebpageCapture.cs
View file

@ -45,6 +45,9 @@ public class WebpageCapture : IDisposable
public WebpageCapture()
{
webBrowser = new WebBrowser();
webBrowser.AllowNavigation = true;
webBrowser.ScriptErrorsSuppressed = true;
webBrowser.ScrollBarsEnabled = false;
webBrowser.DocumentCompleted += webBrowser_DocumentCompleted;
}
@ -57,8 +60,6 @@ public void CapturePage(string url, Size browserSize)
{
if (!string.IsNullOrEmpty(url))
{
webBrowser.ScriptErrorsSuppressed = true;
webBrowser.ScrollBarsEnabled = false;
webBrowser.Size = browserSize;
webBrowser.Navigate(url);
}
@ -66,33 +67,62 @@ public void CapturePage(string url, Size browserSize)
private void webBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
if (webBrowser.ReadyState == WebBrowserReadyState.Complete)
{
TaskEx.RunDelayed(GetWebpageBitmap, CaptureDelay);
}
TaskEx.RunDelayed(GetWebpageBitmap, CaptureDelay);
}
private void GetWebpageBitmap()
{
Rectangle rect = webBrowser.Document.Body.ScrollRectangle;
webBrowser.Size = new Size(rect.Width, rect.Height);
Bitmap bmp = new Bitmap(rect.Width, rect.Height);
try
if (webBrowser.Document != null && webBrowser.Document.Body != null)
{
webBrowser.DrawToBitmap(bmp, rect);
OnCaptureCompleted(bmp);
}
catch (Exception ex)
{
DebugHelper.WriteException(ex);
Rectangle rect = webBrowser.Document.Body.ScrollRectangle;
webBrowser.Size = new Size(rect.Width, rect.Height);
Bitmap bmp = new Bitmap(rect.Width, rect.Height);
if (bmp != null)
try
{
bmp.Dispose();
GetImage(webBrowser.ActiveXInstance, bmp, Color.White);
OnCaptureCompleted(bmp);
}
catch (Exception ex)
{
DebugHelper.WriteException(ex);
OnCaptureCompleted(null);
if (bmp != null)
{
bmp.Dispose();
}
OnCaptureCompleted(null);
}
}
}
private static void GetImage(object obj, Image destination, Color backgroundColor)
{
using (Graphics graphics = Graphics.FromImage(destination))
{
IntPtr deviceContextHandle = IntPtr.Zero;
RECT rectangle = new RECT();
rectangle.Right = destination.Width;
rectangle.Bottom = destination.Height;
graphics.Clear(backgroundColor);
try
{
deviceContextHandle = graphics.GetHdc();
IViewObject viewObject = obj as IViewObject;
viewObject.Draw(1, -1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, deviceContextHandle, ref rectangle, IntPtr.Zero, IntPtr.Zero, 0);
}
finally
{
if (deviceContextHandle != IntPtr.Zero)
{
graphics.ReleaseHdc(deviceContextHandle);
}
}
}
}