78 lines
3.7 KiB
Python
78 lines
3.7 KiB
Python
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import bpy
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class MATERIAL_UL_matslots_example(bpy.types.UIList):
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# The draw_item function is called for each item of the collection that is visible in the list.
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# data is the RNA object containing the collection,
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# item is the current drawn item of the collection,
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# icon is the "computed" icon for the item (as an integer, because some objects like materials or textures
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# have custom icons ID, which are not available as enum items).
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# active_data is the RNA object containing the active property for the collection (i.e. integer pointing to the
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# active item of the collection).
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# active_propname is the name of the active property (use 'getattr(active_data, active_propname)').
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# index is index of the current item in the collection.
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def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
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ob = data
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slot = item
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ma = slot.material
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# draw_item must handle the three layout types... Usually 'DEFAULT' and 'COMPACT' can share the same code.
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if self.layout_type in {'DEFAULT', 'COMPACT'}:
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# You should always start your row layout by a label (icon + text), this will also make the row easily
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# selectable in the list!
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# We use icon_value of label, as our given icon is an integer value, not an enum ID.
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layout.label(ma.name if ma else "", icon_value=icon)
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# And now we can add other UI stuff...
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# Here, we add nodes info if this material uses (old!) shading nodes.
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if ma and not context.scene.render.use_shading_nodes:
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manode = ma.active_node_material
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if manode:
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# The static method UILayout.icon returns the integer value of the icon ID "computed" for the given
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# RNA object.
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layout.label("Node %s" % manode.name, icon_value=layout.icon(manode))
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elif ma.use_nodes:
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layout.label("Node <none>")
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else:
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layout.label("")
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# 'GRID' layout type should be as compact as possible (typically a single icon!).
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elif self.layout_type in {'GRID'}:
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layout.alignment = 'CENTER'
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layout.label("", icon_value=icon)
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# And now we can use this list everywhere in Blender. Here is a small example panel.
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class UIListPanelExample(bpy.types.Panel):
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"""Creates a Panel in the Object properties window"""
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bl_label = "UIList Panel"
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bl_idname = "OBJECT_PT_ui_list_example"
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bl_space_type = 'PROPERTIES'
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bl_region_type = 'WINDOW'
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bl_context = "object"
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def draw(self, context):
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layout = self.layout
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obj = context.object
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# template_list now takes two new args.
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# The first one is the identifier of the registered UIList to use (if you want only the default list,
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# with no custom draw code, use "UI_UL_list").
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layout.template_list("MATERIAL_UL_matslots_example", "", obj, "material_slots", obj, "active_material_index")
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# The second one can usually be left as an empty string. It's an additional ID used to distinguish lists in case you
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# use the same list several times in a given area.
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layout.template_list("MATERIAL_UL_matslots_example", "compact", obj, "material_slots",
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obj, "active_material_index", type='COMPACT')
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def register():
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bpy.utils.register_class(MATERIAL_UL_matslots_example)
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bpy.utils.register_class(UIListPanelExample)
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def unregister():
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bpy.utils.unregister_class(MATERIAL_UL_matslots_example)
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bpy.utils.unregister_class(UIListPanelExample)
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if __name__ == "__main__":
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register()
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