Grid settings improvements

[GoogleCodeExporter]

What do you need to do?
The current grid color is a bit too intrusive.
The user should be allowed to change that color as well change its transparency.

How would you like to do it?
Add a sub menu under grid settings allowing the user to change the color and 
transparency of the grid.

Original issue reported on code.google.com by mitar...@gmail.com on 19 Dec 2011 at 11:32

[GoogleCodeExporter]

Hi! You can change the grid color from "Edit > Options" menu, and then change 
the "Grid Color" field. Anyway you cannot specify the transparency of the grid.

I think that, as you didn't find this option, maybe it should be located in the 
same "Grid Settings" dialog when we press the "Set Grid" button (which right 
now it acts more like "Set Grid Bounds" only).

I'll leave this issue open as "Grid settings improvements".
1) Add "Grid opacity" value.
2) Add grid color/opacity fields into "Grid Settings" dialog.
3) Split the "Set Grid" button into two: Grid to Selection & Grid Settings

Original comment by davidcapello on 19 Dec 2011 at 12:51

• Changed title: Grid settings improvements
• Changed state: Accepted

[GoogleCodeExporter]

I've got a working Grid Color/opacity setting in the "Grid Settings" dialog, 
but actually implementing grid opacity is a whole other ball of wax.

Currently, the grid drawing code uses a function in app/color_utils.h which 
relies on some allegro specific code.  In the get_color_for_allegro() function 
an alpha(opacity) value of 255 is hard coded.

I've gotten the color and opacity settings added, and even a beginning to pass 
an opacity to the function that draws the grid.  However, due to allegro 
being... allegro, it's not as simple as passing an RGBA color and letting 
nature take its course.

I'd forgotten how weird allegro was, and have no clue how to coax alpha 
transparency out of it.  Tried throwing set_alpha_blender() in there, but I've 
got a bad feeling that the primitive drawing functions simply ignore all that 
anyway.

Changes are at 
https://github.com/DocHoncho/aseprite/commit/7ca4387586c25c201c2221a284ecf671569
fd4ee

No pull request for this at this time.  Issue requires more review.

Original comment by DocHoncho@gmail.com on 30 Nov 2013 at 6:59

• Changed state: Started