I'm trying to save full rendered image from Internet Explorer.
Unfortunately, I can't use WinForm component "WebBrowser" or third party components like HtmlCapture.Net or On-line services or smth like that because I have several limitations. But I still hope that using a IE is enough for solving my task.
The main part of my code looks like this:
SHDocVw.WebBrowser wb = GetBrowser();
wb.DocumentComplete += wb_DocumentComplete2;
wb.Navigate(_url);
private void wb_DocumentComplete2(object pDisp, ref object URL)
{
var iwb2 = (IWebBrowser2) pDisp;
var document = (IHTMLDocument2) iwb2.Document;
if (heightsize > 0 && widthsize > 0)
{
IntPtr _hwnd = IntPtr.Zero;
try
{
_hwnd = new IntPtr(iwb2.HWND);
}
catch (Exception e)
{
}
if (_hwnd != IntPtr.Zero)
{
//Start here
RECTL r = new RECTL
{
top = 0,
left = 0,
bottom = heightsize,
right = widthsize
};
IViewObject ivo = document as IViewObject;
if (ivo != null)
{
using (Bitmap bmp = new Bitmap(widthsize, heightsize))
{
using (Graphics g = Graphics.FromImage(bmp))
{
//get the handle to the device context and draw
IntPtr hdc = g.GetHdc();
ivo.Draw(DVASPECT.DVASPECT_CONTENT, 1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, hdc, ref r, ref r, IntPtr.Zero, 0);
g.ReleaseHdc(hdc);
}
String filename = @"C:\" + Guid.NewGuid() + ".png";
bmp.Save(filename, ImageFormat.Png);
}
}
}
}
}
But I'm always get only black image.
I also tryed to use BitBlt but if web page is too big the bottom part of image is black and as far as I know it's because of the nature of BltBit which suppose to copy only visible part of the window. CopyFromScreen doesn't work for same reason.
Do I have any options except this solution?
Anyways, I really appreciate if somebody give my any suggestion or right direction how do do this.
I tried smth. like that
using (Graphics graphics = Graphics.FromImage(new Bitmap(Width,Height)))
{
IntPtr hdcDestination = graphics.GetHdc();
tagRECT lprcBounds = new tagRECT(0, 0, Width, Height);
tagRECT lprcWBounds = new tagRECT(0, 0, Width, Height);
int i = viewObject.Draw(1, 1, IntPtr.Zero, IntPtr.Zero, hdcDestination, IntPtr.Zero, lprcBounds, lprcWBounds, IntPtr.Zero, 0);
IntPtr hdcMemory = Helper.Gdi32.CreateCompatibleDC(hdcDestination);
IntPtr bitmap = Helper.Gdi32.CreateCompatibleBitmap(hdcDestination, Width, Height);
if (bitmap != IntPtr.Zero)
{
IntPtr hOld = Helper.Gdi32.SelectObject(hdcMemory, bitmap);
Helper.Gdi32.BitBlt(hdcMemory,0, 0,Width, Height, hdcDestination, 0, 0, Helper.Gdi32.SRCCOPY);
Helper.Gdi32.SelectObject(hdcMemory, hOld);
Helper.Gdi32.DeleteDC(hdcMemory);
graphics.ReleaseHdc(hdcDestination);
Image img = Image.FromHbitmap(bitmap);
String filename = @"C:\" + Guid.NewGuid() + ".png";
img.Save(filename, ImageFormat.Png);
}
}
But I'm not succeed here too.
I also tried to use IHTMLElementRender but this cast is fails:
IHTMLElement element = (IHTMLElement) document.body; // Okay, element isn't null
IHTMLElementRender render = (IHTMLElementRender) element; //Fails!
Anyways here is complete code and I think it works good enough with WebBrowser control from Winforms.
private void OnDocumentComplete(object sender, DWebBrowserEvents2_DocumentCompleteEvent e)
{
IHTMLDocument2 document = (IHTMLDocument2) this.axWebBrowser1.Document;
if (document != null)
{
IHTMLElement element = (IHTMLElement) document.body;
if (element != null)
{
IHTMLElementRender render = (IHTMLElementRender) element;
if (render != null)
{
using (Graphics graphics = this.pictureBox1.CreateGraphics())
{
IntPtr hdcDestination = graphics.GetHdc();
render.DrawToDC(hdcDestination);
IntPtr hdcMemory = GDI32.CreateCompatibleDC(hdcDestination);
IntPtr bitmap = GDI32.CreateCompatibleBitmap(
hdcDestination,
this.axWebBrowser1.ClientRectangle.Width, this.axWebBrowser1.ClientRectangle.Height
);
if (bitmap != IntPtr.Zero)
{
IntPtr hOld = (IntPtr) GDI32.SelectObject(hdcMemory, bitmap);
GDI32.BitBlt(
hdcMemory,
0, 0,
this.axWebBrowser1.ClientRectangle.Width, this.axWebBrowser1.ClientRectangle.Height,
hdcDestination,
0, 0,
(int) GDI32.TernaryRasterOperations.SRCCOPY
);
GDI32.SelectObject(hdcMemory, hOld);
GDI32.DeleteDC(hdcMemory);
graphics.ReleaseHdc(hdcDestination);
this.pictureBox.Image = Image.FromHbitmap(bitmap);
}
}
}
}
}
}
If you wanted a temporary screenshot for viewing which page you wanted try screenshotting the current activity then outputting it as a imagebutton and add the onclicklistener for the Screen1.class
View content = findViewById(R.id.blankview);
getScreen();
}
private void getScreen(){
Bitmap bitmap = content.getDrawingCache();
File file = new File("/sdcard/test.png");
try
{
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, ostream);
ostream.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
Or Alternatively/Both
View v = view.getRootView();
v.setDrawingCacheEnabled(true);
Bitmap b = v.getDrawingCache();
String extr = Environment.getExternalStorageDirectory().toString();
File myPath = new File(extr, getString(R.string.free_tiket)+".jpg");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myPath);
b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
MediaStore.Images.Media.insertImage(getContentResolver(), b, "Screen", "screen");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
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