html网页元素在屏幕上的坐标获取

今天在用python调用IE获取html网页元素在屏幕上的坐标，当然为了截图啦，(*^__^*) 嘻嘻……

xtop=ie.document.forms[i].elements[j].getBoundingClientRect().top + ie.document.parentwindow.screentop

xheight= ie.document.forms[i].elements[j].getBoundingClientRect().bottom - ie.document.forms[i].elements[j].getBoundingClientRect().top


forms[i].elements[j].可以用 getElementById(“username”) 代替

然后用python调用delphi截图程序，这样就可以获取网页元素上的截图了，有什么用，嘻嘻，获取图形验证码嘛，然后…

delphi的截图函数:

procedure tform1.snapscreen(a,b,c,d:Integer);
var
bmpscreen:Tbitmap;
jpegscreen:Tjpegimage;
FullscreenCanvas:TCanvas;
dc:HDC;
sourceRect, destRect: TRect;
begin
try
dc:=getdc(0);
fullscreencanvas:=Tcanvas.Create;
fullscreencanvas.Handle:=dc;
bmpscreen:=Tbitmap.create;
bmpscreen.Width :=c-a;
bmpscreen.Height :=d-b;
sourcerect:=rect(0,0,c-a ,d-b );
destrect:= rect(a,b,c,d);
bmpscreen.Canvas.CopyRect(sourcerect,fullscreenCanvas,destrect);
jpegscreen:=Tjpegimage.Create ;
jpegscreen.Assign (bmpscreen);
jpegscreen.CompressionQuality:=100;
jpegscreen.SaveToFile(ExtractFilePath(ParamStr(0))+'tmp.jpg');
FullscreenCanvas.Free;
bmpscreen.Free;
jpegscreen.Free ;
ReleaseDC(0, DC);
except
end;
end;


python调用exe:
os.system(‘jietu.exe ‘+str(xleft+3)+’ ‘+str(xtop+3)+’ ‘+str(xwidth)+’ ‘+str(xheight))

str(xleft+3)等是我的参数，大家应该看得明吧，(*^__^*) 嘻嘻……