kicad-developers team mailing list archive

[Nick Østergaard <oe.nick@xxxxxxxxx>]

Maybe I am off here, butnis there any reason why you can just enable the
MAINTAIN_PNGS option to make it convert the svg to cpp?

tir. 6. aug. 2019 06.01 skrev Johannes Sprigode <jos@xxxxxxxxxxx>:

> If I may chip in.
>
> The new symbols (16x16) I created for the horizontal text are done in
> inkscape and exported as png.
>
> Post processed in gimp to an 8-bit grey scale with alpha which reduced
> them from ~300 to ~170 something bytes.
>
> They still appear to have the same quality as you have seen. Settings
> attached.
>
> The same should be doable for those cursors, or anything alike.
>
> Cheers
>
> Johannes
>
> On 6/08/19 9:51 AM, Jeff Young wrote:
> > If you open the PNG in Gimp and then export as XBM it works.  (Note that
> while wxBitmap’s constructor purports to support sizes, if you pass
> anything under 32x32 you’ll get garbage.)
> >
> > However, the cursors aren’t greyscale (they’re true black-and-white), so
> the whole SVG source idea produces some pretty ugly cursors.  I think we’ll
> have to specify them as bitmaps.
> >
> >> On 5 Aug 2019, at 15:25, Jeff Young <jeff@xxxxxxxxx> wrote:
> >>
> >> I also tried online converters for PNG -> XBM and directly from the
> source (SVG -> XBM), but they all give me black images….
> >>
> >>
> >>> On 5 Aug 2019, at 15:15, Jeff Young <jeff@xxxxxxxxx> wrote:
> >>>
> >>> I found doc on the colour modes; 0 is monochrome without alpha, 2 is
> RGB, 4 is monochrome with alpha and 6 is RGBA.
> >>>
> >>> So -c 0 should be correct.
> >>>
> >>> But it appears wxBitmap is expecting XBM data rather than PNG data.
> Hm…..
> >>>
> >>>
> >>>> On 5 Aug 2019, at 14:46, Jeff Young <jeff@xxxxxxxxx> wrote:
> >>>>
> >>>> pngcrush -c 0 makes a single-plane char array, but it appears to be
> in a different order or something (the array is the right size, but
> produces a garbage cursor).
> >>>>
> >>>> Anyone know what the other colour modes are?  (0, 2, 4, 6)
> >>>>
> >>>>> On 5 Aug 2019, at 13:22, Jeff Young <jeff@xxxxxxxxx> wrote:
> >>>>>
> >>>>> Our PNG2cpp.cmake script makes a 3 or 4 plane (ie: colour) char
> array.
> >>>>>
> >>>>> wxWidgets’ wxBitmap() constructor needs a single plane char array.
> John Beard created a couple for the SPICE cursors, but I’m not sure how he
> did it.
> >>>>>
> >>>>> Thanks,
> >>>>> Jeff.
> >>>>>
> >>>>>
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