GSoC Status - Week 7 (Customizable prints)

[Lubomir I. Ivanov]

On 17 July 2015 at 21:13, Gehad Elrobey <gehadelrobey at gmail.com> wrote:
>
>
> On Fri, Jul 17, 2015 at 8:08 PM, Lubomir I. Ivanov <neolit123 at gmail.com>
> wrote:
>>
>> hello Gehad,
>>
>> without looking at the code, the greyscale mode works as expected, but
>> both the Preview and actual Print now razterize everything on Windows
>> (profile and table). we want them in vector graphics on all OSes and
>> Qt versions where possible.
>>
>> perhaps, that's something you've overlooked?
>
>
> I am forces to render the dive profile on a QImage so that I can convert it
> to grayscale image and then render it on top of the QWebview, Do you think
> there is a way to convert the vector graphics to grayscale?
>

i see...
well bummer, i can't find if Qt has shaders, custom color palettes,
"color delegates" and such for QPicture/QPainter. which means that to
convert something to greyscale it needs to be rasterized first. Tomaz,
if you have any idea, do say.

i guess for now you can only *rasterize* the profile if greyscale is enabled.
but this isn't a pretty solution...we may have to attempt to use the
custom color tables for the profile after all (i.e. what Tomaz brought
back). :(

but why are the tables raster - are you rasterizing the whole page?
shouldn't the CSS greyscale filter preserve the vector?

lubomir
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