How to zoom and move the selected node to center-screen ?

[Partin-巴丁]

I am making a brower,by using webkit.I want make the browser support like following description:

    1).User click a editor;

    2).Page zoom to 150% and auto scroll the view,let the eidtor(node) in the center of the view;

    4)Pop up the input window;

    5).user easily enter text.

 

I wondering where to add the code, can somebody tell me? 

Is it the best way or right? If let the webview catch the click-message and then m_frame->setZoomFactor and frame->view()->scroll ? And ,how to catch the click message?

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