Re: initailization issue? transparent_solids.dem on gnuplot 4.3 ChangeLog 2009-07-04 on win term

[Tatsuro M. <tma...@ya...>]

Hello

> The patch for graphic.c is needed for other terms so that win.trm can be modified with 
> > +#if (0) /* Broken! */
> >      GraphOp(&graphwin, W_fillstyle, style, 0, NULL);
> > +#endif
> at the moment.
> 
HMMMM!
I withdraw the above. The patch for win.trm gives rectangles always not filled.

Regards

Tatsuro  

--- Tatsuro MATSUOKA wrote:

> Hello
> 
> I have attached your patch and tried
> Hello 
> 
> This time 
> gnuplot> set title 'HELLO' tc rgb "blue"
> gnuplot> set object 1 rect from 0,0 to 5,5 fc rgb "blue"
> gnuplot> set object 2 rect from -6,-6 to -1,-1 fc lt 3
> gnuplot> plot x
> 
> gives white or transparent two rectanangles.
> For transparent_solids.dem the figure was drawn white or transparent black ground.
> 
> This issue seems to be solved easily.
> 
> However if figure is copied to clipboard and paste it to other applications, the further plots
> go
> well.   
> 
> The patch for graphic.c is needed for other terms so that win.trm can be modified with 
> > +#if (0) /* Broken! */
> >      GraphOp(&graphwin, W_fillstyle, style, 0, NULL);
> > +#endif
> at the moment.
> 
> Regards
> 
> Tatsuro
>  
> --- Ethan Merritt  wrote:
> 
> > Here is my current theory of what is happening.
> > 
> > The 2009-07-04 patch changed the core code to always call term->fillbox()
> > to draw a rectangle rather than calling term->filled_polygon().  This was
> > to fix a problem that some terminals drew rectangles of the wrong size if
> > called via term->filled_polygon().
> > 
> > The windows terminal driver has for a long time (maybe forever?) been 
> > unable to draw transparent fill or pattern fill correctly.  See for example
> >   Bug 1952287	Windows driver lacks correct color shading or transparency
> > 
> > The windows terminal also has a second bug that WIN_filled_polygon ignores 
> > the fillstyle.  It always draws solid fill in the current color. 
> > 
> > In the case of drawing filled rectangles, the second bug was hiding the 
> > first bug.  When you asked for a filled rectangle, the core called
> > WIN_filled_polygon() which then ignored the fillstyle and always drew
> > solid fill in the current color.  The 2009-07-04 patch changed this so
> > that instead the core code calls WIN_boxfill() which _does_ try to
> > apply the current fillstyle, but this triggers Bug #1952287 and the fill
> > comes out wrong.
> > 
> > So I am guessing that the following patch will return the windows
> > behaviour to the previous state, by causing WIN_boxfill() to ignore
> > the fill style just as WIN_filled_polygon() has always ignored the
> > fill style.
> > 
> > --- gnuplot/term/win.trm        2009-06-07 21:37:29.000000000 -0700
> > +++ gnuplot-cvs/term/win.trm    2009-07-09 23:33:55.000000000 -0700
> > @@ -621,7 +621,9 @@ WIN_boxfill(
> >  {
> >      /* split into two commands to squeeze through all the necessary info */
> >      /* Notice HBB 20010208: --> WIN_move() */
> > +#if (0) /* Broken! */
> >      GraphOp(&graphwin, W_fillstyle, style, 0, NULL);
> > +#endif
> >      GraphOp(&graphwin, W_move, xleft, ybottom, NULL);
> >      GraphOp(&graphwin, W_boxfill, width, height, NULL);
> >  }
> > 
> > Can you test whether this guess is correct?
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> 
> 
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