Change hovered values by keys

Question

I would like to increase and decrease values of any slider/property (node or menus) which mouse is hovering over by hotkeys (let's say arrow hotkeys). It's basically the same like you can do with ctrl + mouse wheel, when you hover over sliders, but with hotkeys. Because I use tablet and pen - I am not able to use mouse wheel... I can image "simple" python script. Something like (it's just schematic):

• slider = active_slider_under_mouse_cursor
• slider.increase_value += 0.1

But I haven't found anything liek this anywhere - don't know how to acces the slider uder mouse. Please don't you know how to do it?

Answer 1

I think I've solved it! This script can do that... it's using clipboard data.

class Nudge_plus_small(bpy.types.Operator):
    """This will increase property value"""
    bl_idname = "object.nudge_plus_small"
    bl_label = "Increment value +0.01 "
    bl_options = {'REGISTER', 'UNDO'}


    def execute(self, context):
            
        try:
            #get the value         
            bpy.ops.ui.copy_data_path_button(full_path=True)
            exec('global value\nvalue = ' + bpy.context.window_manager.clipboard)
            prop = bpy.context.window_manager.clipboard

            #check the type and perform the action
            if type(value) == float:
                exec(prop + '+= 0.01') 

            elif type(value) == int:
                exec(prop + '+= 1') 

            else:
                print ('===> ERROR => Wrong value type => ' + str(type(value)))
                
        except:
            print ('===> ERROR: Wrong Context')
        
        return {"FINISHED"}
    
def register():
    bpy.utils.register_class(Nudge_plus_small)
    
def unregister():
    bpy.utils.register_class(Nudge_plus_small)
    
if __name__ == "__main__":
    register()