<SOLVED> cannot get qpf2 fonts to work with linuxfb platform
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I am running on an embedded linux device and am trying to experiment with pre-rendered fonts for performance reasons and am running into a roadblock. My app uses three different fonts which are specified via a style string (ie. setStyleSheet). These are:
- DejaVu Sans 13 px normal
- DejaVu Sans 15 px normal
- DejaVu Sans 36 px normal
I have generated the fonts using makeqpf which generated the following files:
- dejavu_sans_12_50.qpf2
- dejavu_sans_15_50.qpf2
- dejavu_sans_36_50.qpf2
My font specification in the stylesheet looks something like this:
"QWidget {" " color: #000000;" " font-family: DejaVu Sans;" " font-size: 12px;" " font-weight: normal;" " font-style: normal;" " background-color: #ffffff;" " background-image: none;" "}"
Yet if i remove all of the *.ttf, *.pfa and *.pfb files from my font directory and include only my *.qpf2 fonts, i get black boxes in place of my text. A listing of my fonts directory looks like this:
-rw-r----- 1 root root 405944 May 1 2015 dejavu_sans_11_50.qpf2 -rwxr-xr-x 1 root root 924116 Jan 1 00:05 dejavu_sans_12_50.qpf2 -rwxr-xr-x 1 root root 1204488 Jan 1 00:05 dejavu_sans_15_50.qpf2 -rwxr-xr-x 1 root root 6135332 Jan 1 00:05 dejavu_sans_36_50.qpf2 -rw-r----- 1 root root 3109 May 1 2015 fixed_120_50.qpf -rw-r----- 1 root root 2567 May 1 2015 fixed_70_50.qpf -rw-r----- 1 root root 3046 May 1 2015 helvetica_100_50.qpf -rw-r----- 1 root root 3052 May 1 2015 helvetica_100_50i.qpf -rw-r----- 1 root root 3040 May 1 2015 helvetica_100_75.qpf -rw-r----- 1 root root 3081 May 1 2015 helvetica_100_75i.qpf -rw-r----- 1 root root 3301 May 1 2015 helvetica_120_50.qpf -rw-r----- 1 root root 3560 May 1 2015 helvetica_120_50i.qpf -rw-r----- 1 root root 3326 May 1 2015 helvetica_120_75.qpf -rw-r----- 1 root root 3759 May 1 2015 helvetica_120_75i.qpf -rw-r----- 1 root root 3860 May 1 2015 helvetica_140_50.qpf -rw-r----- 1 root root 4208 May 1 2015 helvetica_140_50i.qpf -rw-r----- 1 root root 4035 May 1 2015 helvetica_140_75.qpf -rw-r----- 1 root root 4498 May 1 2015 helvetica_140_75i.qpf -rw-r----- 1 root root 5179 May 1 2015 helvetica_180_50.qpf -rw-r----- 1 root root 5778 May 1 2015 helvetica_180_50i.qpf -rw-r----- 1 root root 5712 May 1 2015 helvetica_180_75.qpf -rw-r----- 1 root root 5977 May 1 2015 helvetica_180_75i.qpf -rw-r----- 1 root root 7691 May 1 2015 helvetica_240_50.qpf -rw-r----- 1 root root 8333 May 1 2015 helvetica_240_50i.qpf -rw-r----- 1 root root 7912 May 1 2015 helvetica_240_75.qpf -rw-r----- 1 root root 8588 May 1 2015 helvetica_240_75i.qpf -rw-r----- 1 root root 2735 May 1 2015 helvetica_80_50.qpf -rw-r----- 1 root root 2742 May 1 2015 helvetica_80_50i.qpf -rw-r----- 1 root root 2745 May 1 2015 helvetica_80_75.qpf -rw-r----- 1 root root 2750 May 1 2015 helvetica_80_75i.qpf -rw-r----- 1 root root 263331 May 1 2015 japanese_230_50.qpf -rw-r----- 1 root root 1602 May 1 2015 micro_40_50.qpf -rwxr-xr-x 1 root root 36560 Jan 1 00:05 sans_serif_12_50.qpf2 -rw-r----- 1 root root 1215089 May 1 2015 unifont_160_50.qpf
Any idea why Qt doesn't find my qpf2 fonts?
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I was actually able to get this to work by modifying qtbase/src/src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp to create a QPlatformFontDatabase instead of a QGenericUnixFontDatabase for its font database.
This is not ideal as i would rather not modify the qt source code but I suppose it will work for now.
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Hi,
That might be something worth mentioning on the bug report system