I was thinking about a solution for a while now. Ideas so far:
Solution 1: Patch QScreen (easy?)
- introduce virtual void QScreen::setFlashing(bool)
- empty default implementation
- overwrite setFlashing in KindleScreen
- set the flashing update once when the set to true and reset to false after the update
- get the static pointer QScreen::instance();
- use screen->setFlashing(true) before calling the update to do one flashing update
Solution 2: Intermediate class (better?)
- inherit QFlashingScreen from QLinuxFBScreen
- Introduce setFlashing in QFlashingScreen
- reinterpret_cast or dynamic_cast the pointer of QScreen to QFlashingScreen
- call setFlashing()
- enjoy flashing udpate
I think that I can possibly use QFlashingScreen in future for some other purposes as well (like hardware text cursor for example). So No2 looks good so far.
Uploaded with
ImageShack.us
Edit:
Victory is sweet!
Implemented in 10 minutes, works like a charm
.