/// <summary>
/// 通过WebBrowser控件来实现从HTML到Bmp图片的生成。
/// </summary>
/// <param name="htmPath">HTML路径</param>
/// <returns>Bmp图片路径</returns>
private static string ConverHTML(string htmPath)
{
string ImagePath = string.Empty;
WebBrowser web = new WebBrowser();
web.Navigate(htmPath);
while (web.ReadyState != WebBrowserReadyState.Complete)
{
System.Windows.Forms.Application.DoEvents();
}
Rectangle screen = Screen.PrimaryScreen.Bounds;
Size? imgsize = null;
//set the webbrowser width and hight
web.Width = screen.Width;
web.Height = screen.Height;
//suppress script errors and hide scroll bars
web.ScriptErrorsSuppressed = true;
web.ScrollBarsEnabled = false;
Rectangle body = web.Document.Body.ScrollRectangle;
//check if the document width/height is greater than screen width/height
Rectangle docRectangle = new Rectangle()
{
Location = new Point(0, 0),
Size = new Size(body.Width > screen.Width ? body.Width : screen.Width,
body.Height > screen.Height ? body.Height : screen.Height)
};
//set the width and height of the WebBrowser object
web.Width = docRectangle.Width;
web.Height = docRectangle.Height;
//if the imgsize is null, the size of the image will
//be the same as the size of webbrowser object
//otherwise set the image size to imgsize
Rectangle imgRectangle;
if (imgsize == null)
imgRectangle = docRectangle;
else
imgRectangle = new Rectangle()
{
Location = new Point(0, 0),
Size = imgsize.Value
};
//create a bitmap object
Bitmap bitmap = new Bitmap(imgRectangle.Width - 24, imgRectangle.Height);
//get the viewobject of the WebBrowser
IViewObject ivo = web.Document.DomDocument as IViewObject;
using (Graphics g = Graphics.FromImage(bitmap))
{
//get the handle to the device context and draw
IntPtr hdc = g.GetHdc();
ivo.Draw(1, -1, IntPtr.Zero, IntPtr.Zero,
IntPtr.Zero, hdc, ref imgRectangle,
ref docRectangle, IntPtr.Zero, 0);
g.ReleaseHdc(hdc);
}
SAVEWORDJPG = string.Format(@"E:\cheng_Text\FormatApplication\测试文件\{0}.bmp", Guid.NewGuid().ToString());
bitmap.Save(SAVEWORDJPG, System.Drawing.Imaging.ImageFormat.Bmp);
bitmap.Dispose();
web.Dispose();
DeleteTempFile(TEMPHTMLPATH);
return SAVEWORDJPG;
}
/// <summary>
/// 删除指定的临时文件。
/// </summary>
/// <param name="filePath"></param>
private static void DeleteTempFile(string filePath)
{
//删除临时HTML文件 。
File.Delete(filePath);
//删除目录文件内容。
string[] files = filePath.Split('.');
if (files[1].ToLower().Equals("htm"))
{
string dirPath = files[0] + ".files";
foreach (string f in Directory.GetFileSystemEntries(dirPath))
{
// 如果是文件存在
if (File.Exists(f))
{
FileInfo fi = new FileInfo(f);
if (fi.Attributes.ToString().IndexOf("Readonly") != 1)
{
fi.Attributes = FileAttributes.Normal;
}
// 直接删除其中的文件
File.Delete(f);
}
}
Directory.Delete(dirPath);
}
}
#region==========IViewObje【实现接口类】================
[ComVisible(true), ComImport()]
[GuidAttribute("0000010d-0000-0000-C000-000000000046")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IViewObject
{
[return: MarshalAs(UnmanagedType.I4)]
[PreserveSig]
int Draw(
[MarshalAs(UnmanagedType.U4)] UInt32 dwDrawAspect,
int lindex,
IntPtr pvAspect,
[In] IntPtr ptd,
IntPtr hdcTargetDev,
IntPtr hdcDraw,
[MarshalAs(UnmanagedType.Struct)] ref Rectangle lprcBounds,
[MarshalAs(UnmanagedType.Struct)] ref Rectangle lprcWBounds,
IntPtr pfnContinue,
[MarshalAs(UnmanagedType.U4)] UInt32 dwContinue);
[PreserveSig]
int GetColorSet([In, MarshalAs(UnmanagedType.U4)] int dwDrawAspect,
int lindex, IntPtr pvAspect, [In] IntPtr ptd,
IntPtr hicTargetDev, [Out] IntPtr ppColorSet);
[PreserveSig]
int Freeze([In, MarshalAs(UnmanagedType.U4)] int dwDrawAspect,
int lindex, IntPtr pvAspect, [Out] IntPtr pdwFreeze);
[PreserveSig]
int Unfreeze([In, MarshalAs(UnmanagedType.U4)] int dwFreeze);
void SetAdvise([In, MarshalAs(UnmanagedType.U4)] int aspects,
[In, MarshalAs(UnmanagedType.U4)] int advf,
[In, MarshalAs(UnmanagedType.Interface)] IAdviseSink pAdvSink);
void GetAdvise([In, Out, MarshalAs(UnmanagedType.LPArray)] int[] paspects,
[In, Out, MarshalAs(UnmanagedType.LPArray)] int[] advf,
[In, Out, MarshalAs(UnmanagedType.LPArray)] IAdviseSink[] pAdvSink);
}
#endregion
