ic_pptfig() Add ability to turn on/off italics and customize fig coordinates

[bleonard314]

@schroedermark165 and I made a custom work around based on a project specific figure template, but it would be nice to:

a) Turn on/off italics (and perhaps specific font size and/or bolding) for title block text (specifically doctitle1, but this could include all text).

https://github.com/IntegralEnvision/integral/blob/091b678d8bdadf5ffe59883fc0c74a0c013af809/R/pptfig.R#LL125C12-L125C12

b) Allow users to customize the figure coordinates (top/left/height/width) to accommodate custom PowerPoint templates (in our case, we had to shrink the figure height slightly).

[bleonard314]

Overlaps with:

https://github.com/IntegralEnvision/integral/issues/74#issue-1560613369

[kheal]

I would like us to strike a balance between having flexibility and having too many parameters in the function. To this end, I could imagine making it easier to download the default template to make these changes for your specific project (I'd have to double check where the italics and figure size are determined, but I think it's the template or it could be). I would be happy to add examples that show this to the vignette to make it more accessible. I think adjusting figure margins and/or the size of the figure in the template is more straightforward for the spacing issues. What do you think @bleonard314 and @schroedermark165?

[bleonard314]

@kheal The workaround was to download the default template, modify it, read in the modified pptx file using officer::read_pptx() and then pass this document as the my_pres argument to a customized version of integral::ic_pptfig() that had the italics removed and the height set to be shorter to accommodate the custom template. Since we were working with a slightly modified version of the standard template integral::ic_pptfig() worked well with the exception of those two formatting issues.

I was thinking it might be possible to:

• allow for doctitle1, etc. to be officer::fp_text() objects and skip the additional formatting if true;

• use a figure placeholder object in the pptx template with the top/left/height/width defined in PowerPoint instead of hard-coded into the script like other object positions in the script.

Just thought I'd add these suggestions while I was thinking about it, but everything works well as-is so it is not urgent or necessary.