'set key opaque' in aqua terminal

[Jun T. <tak...@kb...>]

(CVS at sourceforge is down; I hope the mailing list is alive.)

Attached are two pdf files generated by

gnuplot> set key opaque
gnuplot> plot [0:1] x**0.5, x, x**2

with aqua and qt terminals. As you can see, the key's background
in aqua.pdf is almost black. This is due to that the linetype -4
is set to 'almost black' at line 390 of aquaterm.trm.

The following patch sets linetype -4 to white.
Since 'set term aqua' does not have the option 'backdround',
I think it safe to assume that the background is always white.


--- term/aquaterm.trm.ORG	2015-02-25 09:23:14.000000000 +0900
+++ term/aquaterm.trm	2015-07-21 21:14:12.000000000 +0900
@@ -387,7 +387,7 @@
    * Set up the basic indexed colormap for gnuplot
    */
   /*  Special colors */
-  [adapter setColormapEntry:0 red:0.1 green:0.1 blue:0.1]; /* linetype -4 */
+  [adapter setColormapEntry:0 red:1.0 green:1.0 blue:1.0]; /* linetype -4 */
   [adapter setColormapEntry:1 red:0.9 green:0.9 blue:0.9]; /* linetype -3 (xor;interactive) light gray */
   [adapter setColormapEntry:2 red:0.0 green:0.0 blue:0.0]; /* linetype -2 (border) black */
   [adapter setColormapEntry:3 red:0.8 green:0.8 blue:0.8]; /* linetype -1 (gridlines) light grey */