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    A try to use only cairo to play with image display zoom and translation and... · e2869f0b
    yomgui authored
    A try to use only cairo to play with image display zoom and translation and not gnome widgets. Also comes with a little code refactoring.
    
    Use CTRL key + left bt mouse for translation, CTRL+scroll bt for zoom.
    
    code refactoring to prepare the rewrite of image draw functions:
    
    * separation of static/non-static routines.
    * better functional code for redraw_drawingarea().
    * code factoring.
    e2869f0b
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