On Fri, Jul 17, 2015 at 8:51 PM, Lubomir I. Ivanov <[email protected]> wrote:
> On 17 July 2015 at 21:49, Gehad Elrobey <[email protected]> wrote: > > > > > > On Fri, Jul 17, 2015 at 8:37 PM, Lubomir I. Ivanov <[email protected]> > > wrote: > >> > >> On 17 July 2015 at 21:13, Gehad Elrobey <[email protected]> wrote: > >> > > >> > > >> > On Fri, Jul 17, 2015 at 8:08 PM, Lubomir I. Ivanov < > [email protected]> > >> > 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? > > > > > > It seems that the greyscale filter render the whole page including the > > tables. > > > > you mean, it rasterizes them? > > Yes I did, though when I test the HTML file with chromium everything remains vector graphics, I am not sure why this happens with Qt webkit, I need to test this more. -- regards, Gehad
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