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Date:	Sat, 12 Apr 2014 16:46:09 -0400
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Subject:	Re: [geda-user] Print monochromatic schematic?
From:	Jason White <whitewaterssoftwareinfo AT gmail DOT com>
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Okay, I have found it and have created a patch to fix this. Starting a
new threak

On Sat, Apr 12, 2014 at 2:11 PM, Jason White
<whitewaterssoftwareinfo AT gmail DOT com> wrote:
> On Sat, Apr 12, 2014 at 1:12 PM, Stefan Salewski <mail AT ssalewski DOT de> wrote:
>> On Sat, 2014-04-12 at 12:09 -0400, Jason White wrote:
>>> Is there any way currently to print schematic pages monochrome?
>>
>> You may be able to select black&white in your printer dialog.
> Sadly it is a gray-scale only printer, no option for that.
>
>
>> For gschem 1.8.2 we have
>>
>> cat /usr/share/gEDA/system-gschemrc
>>
>> ; output-color string
>> ;
>> ; Controls if output (postscript) is color (enabled) or black/white
>> (disabled)
>> ;
>> (output-color "disabled")
>> ;(output-color "enabled")
>>
>> Maybe there are (more) similar options in gschem 1.9.x
>>
> I pasted (output-color "disabled") into my local gafrc file using the
> gSchem 1.9.1 release. It does day it loaded the RC file however it
> does not effect print operation.
>
> I took a look at the source code and the function In x_print.c:
> x_print_draw_page on line 139 (ish), take and argument is_color.
> Forcing this value to zero causes monochromatic printing as desired.
> Looking at the source reveals two problems.
>
> First hadling of color vs mono printing is not consistent between the
> three functions below. As far as I can tell you cannot actually invoke
> x_print_export_pdf and x_print_export_pdf_page from the gui as I tried
> exporting PDFs and PDF pages and only draw_page__print_operation was
> called.
>
> Second, when the view is set to black and white in gSchem
> CFG_KEY_PRINTING_MONOCHROME is not being set in the global project
> configuration.
>
> Also, it seems that w_current->toplevel->image_color is depreciated
> yet still compiles? hmm...
>
>
> Below are the Functions "that print" in x_print.c and the ways they
> determine if the project is monochrome
>
> In x_print.c function on line 220 (ish): draw_page__print_operation
> is_color = !eda_config_get_boolean (cfg, CFG_GROUP_PRINTING,
>                                       CFG_KEY_PRINTING_MONOCHROME, NULL);
>
> In x_print.c function on line 338 (ish): x_print_export_pdf
> is_color= w_current->toplevel->image_color
>
> In x_print.c function on line 273 (ish): x_print_export_pdf_page
> is_color = !eda_config_get_boolean (cfg, CFG_GROUP_PRINTING,
>                                       CFG_KEY_PRINTING_MONOCHROME, NULL);
>
>
> Okay, so that brings up a question I would like to make a patch to fix
> this printing issue. However, I cannot find the file and related
> functions which are called from the the menu View->Dark/Light/BW where
> the color scheme is set. Does anyone have any pointers?
>
> --
> Jason White



-- 
Jason White

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