Hello all,
we are using XULRunner 24 embedded in a Java application through Eclipse SWT.
We need extended functionality only available through the XPCOM API, and since
the old JavaXPCOM binding has vanished, we are migrating all code to C++, which
we access from Java through a narrow JNI API. So far, so good.
Now to the real question: we have a XPCOM component written in Javascript that
saves the content of a browser window onto disk. We do this using the
Javascript code shown below:
// create a canvas
var canvas = cwin.document.createElement("canvas");
// get the 2D context and draw everythiong on it
var ctx = canvas.getContext("2d");
ctx.clearRect(0, 0, width, height);
ctx.save();
ctx.drawWindow(cwin, 0, position, width, height, "rgb(255,255,255)");
ctx.restore();
//and then to disk..
Now I would like to rewrite this in C++, and am mighty stuck. Can someone give
a hint how to proceed? I have spent a full day browsing the APIs and the web,
but am not able to figure out how to get to the 2D context thingy and do the
rest. I have found an old post from 2008 regarding a similar issue, but that
would not even compile.
I'd be REALLY grateful for hints!
thanks
Christian
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