Extend 3D View transform settings bar

Coding Python Support
1

How do I add additional UI elements to the transform settings bar in the 3D View?

3dview
3dview914×493 118 KB

Note here I at least managed to get into the side-panel, using bpy.types.VIEW3D_PT_view3d_cursor.append(drawFunc).

Alternatively, adding to the snapping settings pop up would be fine, too.

snap

1 Like
2

I would recommend using append for new UI layout
but if you want to, you can override bpy.types.VIEW3D_HT_header.draw_xform_template

here some preview and code to do that
image

import bpy

def override_draw_xform_template(layout, context):
    obj = context.active_object
    object_mode = 'OBJECT' if obj is None else obj.mode
    has_pose_mode = (
        (object_mode == 'POSE') or
        (object_mode == 'WEIGHT_PAINT' and context.pose_object is not None)
    )

    tool_settings = context.tool_settings

    # Mode & Transform Settings
    scene = context.scene

    # Orientation
    if object_mode in {'OBJECT', 'EDIT', 'EDIT_GPENCIL'} or has_pose_mode:
        orient_slot = scene.transform_orientation_slots[0]
        row = layout.row(align=True)

        sub = row.row()
        sub.ui_units_x = 4
        sub.prop_with_popover(
            orient_slot,
            "type",
            text="",
            panel="VIEW3D_PT_transform_orientations",
        )

    # Pivot
    if object_mode in {'OBJECT', 'EDIT', 'EDIT_GPENCIL', 'SCULPT_GPENCIL'} or has_pose_mode:
        layout.prop(tool_settings, "transform_pivot_point", text="", icon_only=True)

    # Snap
    show_snap = False
    if obj is None:
        show_snap = True
    else:
        if (object_mode not in {
                'SCULPT', 'VERTEX_PAINT', 'WEIGHT_PAINT', 'TEXTURE_PAINT',
                'PAINT_GPENCIL', 'SCULPT_GPENCIL', 'WEIGHT_GPENCIL', 'VERTEX_GPENCIL'
        }) or has_pose_mode:
            show_snap = True
        else:

            paint_settings = UnifiedPaintPanel.paint_settings(context)

            if paint_settings:
                brush = paint_settings.brush
                if brush and hasattr(brush, "stroke_method") and brush.stroke_method == 'CURVE':
                    show_snap = True

    if show_snap:
        snap_items = bpy.types.ToolSettings.bl_rna.properties["snap_elements"].enum_items
        snap_elements = tool_settings.snap_elements
        if len(snap_elements) == 1:
            text = ""
            for elem in snap_elements:
                icon = snap_items[elem].icon
                break
        else:
            text = "Mix"
            icon = 'NONE'
        del snap_items, snap_elements

        row = layout.row(align=True)
        row.prop(tool_settings, "use_snap", text="")

        sub = row.row(align=True)
        sub.popover(
            panel="VIEW3D_PT_snapping",
            icon=icon,
            text=text,
        )

    # override start
    row = layout.row()
    row.operator('mesh.primitive_cube_add')
    # override end

    # Proportional editing
    if object_mode in {'EDIT', 'PARTICLE_EDIT', 'SCULPT_GPENCIL', 'EDIT_GPENCIL', 'OBJECT'}:
        row = layout.row(align=True)
        kw = {}
        if object_mode == 'OBJECT':
            attr = "use_proportional_edit_objects"
        else:
            attr = "use_proportional_edit"

            if tool_settings.use_proportional_edit:
                if tool_settings.use_proportional_connected:
                    kw["icon"] = 'PROP_CON'
                elif tool_settings.use_proportional_projected:
                    kw["icon"] = 'PROP_PROJECTED'
                else:
                    kw["icon"] = 'PROP_ON'
            else:
                kw["icon"] = 'PROP_OFF'

        row.prop(tool_settings, attr, icon_only=True, **kw)
        sub = row.row(align=True)
        sub.active = getattr(tool_settings, attr)
        sub.prop_with_popover(
            tool_settings,
            "proportional_edit_falloff",
            text="",
            icon_only=True,
            panel="VIEW3D_PT_proportional_edit",
        )

bpy.types.VIEW3D_HT_header.draw_xform_template = override_draw_xform_template

this code below for extend snap setting pop up
image

import bpy

def extend_snap_pop_up(self, context):
    layout = self.layout
    layout.label(text='Hello Wolrd')
    layout.operator('mesh.primitive_cube_add')

bpy.types.VIEW3D_PT_snapping.append(extend_snap_pop_up)
2 Likes
3

Thanks! I think I’ll go with the less invasive variant, though it is interesting to see we can override the header entirely. VIEW3D_PT_snapping is what I was missing. Is there a list of these?