space_view3d_align_tools.py

# Align Scale Z
class OBJECT_OT_AlignScaleZOperator(Operator):
    bl_idname = "object.align_objects_scale_z"
    bl_label = "Align Selected Scale Z To Active"
    bl_description = "Align Selected Scale Z To Active"

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        ScaleZ(context)
        return {'FINISHED'}


# Interface Panel

class VIEW3D_PT_AlignUi(Panel):
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'UI'
    bl_label = "Align Tools"
    bl_context = "objectmode"
    bl_category = 'Item'
    bl_options = {'DEFAULT_CLOSED'}

    def draw(self, context):
        layout = self.layout
        obj = context.object

        if obj is not None:
            row = layout.row()
            row.label(text="Active object is: ", icon='OBJECT_DATA')
            box = layout.box()
            box.label(text=obj.name, icon='EDITMODE_HLT')

        col = layout.column()
        col.label(text="Align Loc + Rot:")

        col = layout.column(align=False)
        col.operator("object.align", text="XYZ")

        col = layout.column()
        col.label(text="Align Location:")

        col = layout.column_flow(columns=4, align=True)
        col.operator("object.align_location_x", text="X")
        col.operator("object.align_location_y", text="Y")
        col.operator("object.align_location_z", text="Z")
        col.operator("object.align_location_all", text="All")

        col = layout.column()
        col.label(text="Align Rotation:")

        col = layout.column_flow(columns=4, align=True)
        col.operator("object.align_rotation_x", text="X")
        col.operator("object.align_rotation_y", text="Y")
        col.operator("object.align_rotation_z", text="Z")
        col.operator("object.align_rotation_all", text="All")

        col = layout.column()
        col.label(text="Align Scale:")

        col = layout.column_flow(columns=4, align=True)
        col.operator("object.align_objects_scale_x", text="X")
        col.operator("object.align_objects_scale_y", text="Y")
        col.operator("object.align_objects_scale_z", text="Z")
        col.operator("object.align_objects_scale_all", text="All")

        if obj is not None:
            col = layout.column()
            col.label(text="Advanced Align Operations")
            layout = self.layout
            self.layout.operator("object.align_tools", text="Advanced")


# Add-ons Preferences Update Panel

# Define Panel classes for updating
panels = (
        VIEW3D_PT_AlignUi,
        )


def update_panel(self, context):
    message = "Align Tools: Updating Panel locations has failed"
    try:
        for panel in panels:
            if "bl_rna" in panel.__dict__:
                bpy.utils.unregister_class(panel)

        for panel in panels:
            panel.bl_category = context.preferences.addons[__name__].preferences.category
            bpy.utils.register_class(panel)

    except Exception as e:
        print("\n[{}]\n{}\n\nError:\n{}".format(__name__, message, e))
        pass


class AlignAddonPreferences(AddonPreferences):
    # this must match the addon name, use '__package__'
    # when defining this in a submodule of a python package.
    bl_idname = __name__

    category: StringProperty(
            name="Tab Category",
            description="Choose a name for the category of the panel",
            default="Item",
            update=update_panel
            )

    def draw(self, context):
        layout = self.layout

        row = layout.row()
        col = row.column()
        col.label(text="Tab Category:")
        col.prop(self, "category", text="")


# Class List
classes = (
    VIEW3D_PT_AlignUi,
    OBJECT_OT_AlignOperator,
    OBJECT_OT_AlignLocationOperator,
    OBJECT_OT_AlignLocationXOperator,
    OBJECT_OT_AlignLocationYOperator,
    OBJECT_OT_AlignLocationZOperator,
    OBJECT_OT_AlignRotationOperator,
    OBJECT_OT_AlignRotationXOperator,
    OBJECT_OT_AlignRotationYOperator,
    OBJECT_OT_AlignRotationZOperator,
    OBJECT_OT_AlignScaleOperator,
    OBJECT_OT_AlignScaleXOperator,
    OBJECT_OT_AlignScaleYOperator,
    OBJECT_OT_AlignScaleZOperator,
    OBJECT_OT_align_tools,
    AlignAddonPreferences,
    )


# Register all operators and panels
def register():
    for cls in classes:
        bpy.utils.register_class(cls)


def unregister():
    for cls in classes:
        bpy.utils.unregister_class(cls)


if __name__ == "__main__":
    register()