26 #ifndef __TERRALIB_QT_WIDGETS_CANVAS_INTERNAL_EYEBIRDMAPDISPLAYWIDGET_H    27 #define __TERRALIB_QT_WIDGETS_CANVAS_INTERNAL_EYEBIRDMAPDISPLAYWIDGET_H    31 #include "../../../maptools/AbstractLayer.h"    33 #include "../Config.h"    43   namespace gm { 
class Envelope; }
    77           void setList(std::list<te::map::AbstractLayerPtr>& layerList, 
int srid);
    81           void setEnabled(
bool status);
    87           void onParentMapDisplayExtentChanged();
   107 #endif  // __TERRALIB_QT_WIDGETS_CANVAS_INTERNAL_EYEBIRDMAPDISPLAYWIDGET_H 
An Envelope defines a 2D rectangular region.