gnuplot, figure.position, & the moving window

[John W. Eaton]

On 17-Feb-2009, Ben Abbott wrote:

| Presently the developers sources uses gnuplot 4.3 to set the position  
| and size of the x11 figure window (as specified by the figure position  
| property).
| 
| One side effect is that both octave and gnuplot are unaware of changes  
| in the figure window's position or size made by mouse actions. As a  
| result the current implementation returns the figure to the location  
| and size specified by the figure's position property when the figure  
| is updated (again this only happens with gnuplot 4.3).
| 
| To solve this properly the gnuplot backend needs ...
| 
| (1) To know the "position" property when gnuplot_drawnow was called  
| last.
| 
| (2) Needs mouse movements of the figure to trigger a listener (this is  
| impractical for the gnuplot backend).
| 
| (3) Needs to be able to determine the location/size of the figure  
| window on the screen.
| 
| The attached changeset is intended to address (1). Eventually the  
| gnuplot backend can adopt the solution what I expect will emerge for  
| the fltk backend. For the time being I'm using a hidden axis to hold  
| the prior state of the figure position.
| 
| For the upcoming 3.2 release, I'd like to either include this change,  
| introduce one with equivalent functionality or modify  
| __gnuplot_has_feature__ so as to suppress the unexpected movement of  
| the figure window.

OK, I applied this patch.

Thanks,

jwe