Calculate resizer height from parent
Calculate resizer height from parent

aadrian/w2ui,vitmalina/w2ui,aadrian/w2ui,aadrian/w2ui,vitmalina/w2ui,vitmalina/w2ui,mpf82/w2ui,vitmalina/w2ui,vitmalina/w2ui,aadrian/w2ui,aadrian/w2ui,mpf82/w2ui,vitmalina/w2ui,mpf82/w2ui,mpf82/w2ui,aadrian/w2ui,mpf82/w2ui,mpf82/w2ui,vitmalina/w2ui,mpf82/w2ui,aadrian/w2ui