-Use std commands in menu coming with icons
-Only draggable if activated in menu
-Remove textures except labels and used gl fill instead
-Borders on surrounding buttons
-Fix some openGL issues
-Remove duplicate parameter managment. Kept and improved the one in View3DSettings
-Remove lots of other redundant code
-Replaced FontSize param with FontZoom and enabled auto zoom/size on labels.
-Merged BorderColor and TextColor to single EmphaseColor parameter
-Merged ButtonColor and FrontColor to BaseColor parameter
-Added ChamferSize parameter to control edge and corner size
-Use glDrawArrays() innstead of glBegin() and glEnd()
-Draw butt ends on RGB coordinate system
-Fixe issues where cube switch corner on resize window
AbstractSplitView then no longer needs to be derived from ParameterGrp::ObserverType and reimplement onChange() and thus removes a lot of code duplication
This commit implements radial gradient as background and adds the option
to settings. It also renames "Color gradient" as "Linear gradient",
keeping Linear gradient default. Internally, it remains unchanged for
compatibility.
Radio gradient is more suitable for CAD, since it gives a more balanced
color distribution across the screen, improving visibility of model and
sketches with a halo-like effect.
