To help further, I'm just implementing an option drawOptions().fixedFontSize to allow you to insist on a font size, in pixels. I will remember to expose it to Python! Layout is a different department, I'm afraid I can't help there. It would probably be better to start a new thread with that, so as to catch the attention of the right people.
On Wed, Feb 9, 2022 at 3:58 PM Tim Dudgeon <tdudgeon...@gmail.com> wrote: > Thanks Dave. Understood. > A related question - is it possible to make the layout aware of the amount > of space that is available? I'm stuck with a very wide and short aspect > ratio and it would be helpful if the layout engine could optimise the > layout to fit in that unconventional space. > Tim > > On Wed, Feb 9, 2022 at 11:40 AM David Cosgrove <davidacosgrov...@gmail.com> > wrote: > >> Hi Tim, >> Sorry, the font size setting both within the code and in the public >> interface has been a fraught matter since Freetype was introduced for the >> font drawing and it isn't currently as controllable as one might wish. The >> font is chosen based on baseFontSize and the drawing scale. The size of >> the font relative to the bond lengths is therefore fixed, unless it hits >> the minFontSize or maxFontSize. So for a large molecule in a small canvas, >> it is likely that the font size will be larger relative to the bonds as >> minFontSize has an effect, and vice versa with a small molecule in a large >> canvas. To achieve what you want, you need to increase bastFontSize, >> which, as Paolo mentioned, isn't currently exposed to Python. Apologies >> for that, which was an oversight. It does work with the current release, >> though, so if you don't mind rebuilding RDKit you can use it now. >> Add >> ``` >> >> .def_readwrite( >> >> "baseFontSize", &RDKit::MolDrawOptions::baseFontSize, >> >> "relative size of font. Defaults to 0.6. -1 means use >> default.") >> ``` >> to $RDBASE/Code/GraphMol/MolDraw2D/Wrap/rdMolDraw2D.cpp immediately after >> the analogous minFontSize entry >> HTH, >> Dave >> >> >> >> On Wed, Feb 9, 2022 at 10:31 AM Tim Dudgeon <tdudgeon...@gmail.com> >> wrote: >> >>> OK, thanks. That's great to hear. >>> In the meantime could someone explain how the font is currently chosen? >>> e.g. if I specify 10 as min and 14 as max what is actually used? >>> Tim >>> >>> On Wed, Feb 9, 2022 at 10:11 AM Paolo Tosco <paolo.tosco.m...@gmail.com> >>> wrote: >>> >>>> Hi Tim, >>>> >>>> Dave Cosgrove is currently working at a PR which, among other things, >>>> addresses exactly the need that you describe through the baseFontSize >>>> parameter, which is currently not exposed to Python. The PR is almost ready >>>> for merging and it should become part of the March release. >>>> >>>> Cheers, >>>> p. >>>> >>>> On Wed, Feb 9, 2022 at 10:57 AM Tim Dudgeon <tdudgeon...@gmail.com> >>>> wrote: >>>> >>>>> I'm confused over how the font is chosen when drawing molecules. >>>>> There are MolDrawOptions.minFontSize and MolDrawOptions.maxFontSize >>>>> properties, and if I set them to the same value then that sized font is >>>>> used. But if I set max to a larger size than min then it's not clear what >>>>> font size will be used. >>>>> I'm wanting the font size to adapt to the amount the molecule is >>>>> scaled to fit the space (larger molecules needing a smaller font) but I >>>>> want the font size that is used to be a bit bigger than the default >>>>> that would be used if I don't set anything. >>>>> How do I go about this? >>>>> Thanks >>>>> Tim >>>>> _______________________________________________ >>>>> Rdkit-discuss mailing list >>>>> Rdkit-discuss@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/rdkit-discuss >>>>> >>>> _______________________________________________ >>> Rdkit-discuss mailing list >>> Rdkit-discuss@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/rdkit-discuss >>> >> >> >> -- >> David Cosgrove >> Freelance computational chemistry and chemoinformatics developer >> http://cozchemix.co.uk >> >> -- David Cosgrove Freelance computational chemistry and chemoinformatics developer http://cozchemix.co.uk
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