Am 12.11.2018 um 18:53 schrieb Baris Erkus <[email protected]>: > > On 11/12/2018 4:36 PM, Stephan Witt wrote: >> Am 12.11.2018 um 14:03 schrieb Stephen Buonopane <[email protected]>: >>>> On Nov 12, 2018, at 7:52 AM, Baris Erkus <[email protected]> wrote: >>>> >>>> On 12-Nov-18 3:38 PM, Kornel Benko wrote: >>>>> Am Montag, 12. November 2018 13:21:58 CET schrieb Daniel >>>>> <[email protected]>: >>>>>> On 11/11/2018 19:14, Paul A. Rubin wrote: >>>>>>> On 11/10/18 9:45 PM, Baris Erkus wrote: >>>>>>>> Hello, >>>>>>>> >>>>>>>> PDF graphics appears to be blurred in LyX when scaled from Graphics >>>>>>>> Options --> LaTeX and LyX options --> Show in LyX --> Scale on Screen. >>>>>>>> >>>>>>>> I am not sure if this is a feature to reduce CPU rendering workload or >>>>>>>> smtg, but it would be really nice to have a clear view of the PDF >>>>>>>> while working on the document rather than looking at it using a PDF >>>>>>>> viewer. >>>>>>>> >>>>>>>> See MWE and the view from LyX below. >>>>>>>> >>>>>>>> Baris >>>>>>>> >>>>>>>> >>>>>>> The image in your PDF file is a bitmap (PNG), so I don't hold out much >>>>>>> hope for being able to zoom it without loss of fidelity. >>>>>> Why do you think the graphic in the PDF is a bitmap? I have zoomed in on >>>>>> it and never got any pixels to see. At least it must be an extremely >>>>>> high resolution bitmap then. >>>>>> >>>>>> Daniel >>>>>> >>>>> Because PNG format is bitmap? >>>>> PNG image data, 652 x 668, 8-bit/color RGB, non-interlaced >>>>> >>>>> Kornel >>>>> >>>> The external graphics is in PDF, which is attached to the original >>>> e-mail; it was generated in Tikz, so it is a vector graphics. No >>>> question about it. When inserted into LyX, maybe LyX creates a >>>> temporary bitmap or PNG file to show to the user, I am not sure. >>>> >>>> It should not be a big thing to show a higher resolution graphics or to >>>> let the user decide for possible performance issues. One day I will be >>>> doing all these small modification by myself, but when that I do not >>>> know... :-) >>>> >>>> Baris >>> >>> Yes LyX creates a PNG file for the on-screen preview within LyX (It also >>> does this for the math preview) >>> If you dig into the LyX temp directory you will find all of the PNG files. >>> >>> I recall that an older version of LyX (on Mac) did not use PNG for >>> on-screen previews, in which case it may be possible to revert to the older >>> behavior even in 2.3.X? >> There are fundamental differences between the handling of SVG and PDF files >> in LyX. >> >> LyX is using Qt plugins to render the images on screen. >> >> For PDF files one has to convert them to temporary bitmap files because >> there is no plugin to render them directly. (Perhaps this is not true >> anymore.) For SVG files there is a plugin. But this one is limited in >> functionality. There was a decision to not use it for on-screen display >> because of the complaints regarding missing details. >> >> The problem with the temporary images is the fixed resolution of the >> generated images. The used cache is not invalidated in case of higher >> preview zoom levels. Furthermore you can have different resolutions at >> runtime too. In case of a machine with multiple monitors with different >> physical resolutions you get different values for moving the LyX window >> around. >> >> Stephan > > This makes sense. Do you think it is reasonable that I put this as a > wish to the tracker?
I think it’s already there… but couldn’t find it ATM. Stephan
