  We study the unpolarized and the helicity dependent generalized parton
distributions (GPDs) for the valence quarks of the proton in both momentum
space and position space within the basis light-front quantization (BLFQ)
framework. The GPDs for the valence quarks are computed from the eigenvectors
of a light-front effective Hamiltonian in the valence Fock sector consisting of
a three-dimensional confinement potential and a one-gluon exchange interaction
with fixed coupling. Employing these GPDs, we obtain the spatial distributions
of quark angular momentum inside the proton. In our BLFQ approach, we explore
various definitions of angular momentum density and illustrate the differences
between them arising from terms that integrate to zero. We also discuss the
flavor contributions to the quark angular momentum densities.
