You can now save, load, and create custom colour legends of properties

src/blenderbim/blenderbim/bim/module/group/ui.py

@@ -28,7 +28,7 @@ class BIM_PT_groups(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
-    bl_parent_id = "BIM_PT_project_setup"
+    bl_parent_id = "BIM_PT_tab_grouping_and_filtering"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/search/__init__.py

@@ -25,17 +25,20 @@ classes = (
     operator.AddFilter,
     operator.AddFilterGroup,
     operator.AddToIfcGroup,
+    operator.ColourByProperty,
     operator.ColourByAttribute,
     operator.ColourByClass,
     operator.ColourByPset,
     operator.FilterModelElements,
     operator.IfcSelector,
+    operator.LoadColourscheme,
     operator.LoadQuery,
     operator.LoadSearch,
     operator.OpenQueryLibrary,
     operator.RemoveFilter,
     operator.RemoveFilterGroup,
     operator.ResetObjectColours,
+    operator.SaveColourscheme,
     operator.SaveSearch,
     operator.SaveSelectorQuery,
     operator.Search,
@@ -45,6 +48,7 @@ classes = (
     operator.SelectPset,
     operator.ShowAllElements,
     operator.ToggleFilterSelection,
+    prop.BIMColour,
     prop.BIMFacet,
     prop.BIMFilterGroup,
     prop.BIMFilterClasses,
@@ -56,6 +60,8 @@ classes = (
     prop.SearchQueryGroup,
     prop.IfcSelectorProperties,
     ui.BIM_PT_search,
+    ui.BIM_PT_colour_by_property,
+    ui.BIM_UL_colourscheme,
     ui.BIM_UL_ifc_class_filter,
     ui.BIM_UL_ifc_building_storey_filter,
     ui.BIM_PT_IFCSelector,

src/blenderbim/blenderbim/bim/module/search/data.py

@@ -23,6 +23,7 @@ import blenderbim.tool as tool
 
 def refresh():
     SearchData.is_loaded = False
+    ColourByPropertyData.is_loaded = False
 
 
 class SearchData:
@@ -47,3 +48,31 @@ class SearchData:
             except:
                 pass
         return [(str(g.id()), g.Name or "Unnamed", "") for g in sorted(results, key=lambda x: x.Name or "Unnamed")]
+
+
+class ColourByPropertyData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {}
+        cls.data["saved_colourschemes"] = cls.saved_colourschemes()
+
+    @classmethod
+    def saved_colourschemes(cls):
+        groups = tool.Ifc.get().by_type("IfcGroup")
+        results = []
+        for group in groups:
+            try:
+                data = json.loads(group.Description)
+                if (
+                    isinstance(data, dict)
+                    and data.get("type", None) == "BBIM_Search"
+                    and data.get("colourscheme", None)
+                ):
+                    results.append(group)
+            except:
+                pass
+        return [(str(g.id()), g.Name or "Unnamed", "") for g in sorted(results, key=lambda x: x.Name or "Unnamed")]

src/blenderbim/blenderbim/bim/module/search/operator.py

@@ -149,7 +149,11 @@ class SaveSearch(Operator, tool.Ifc.Operator):
         results = ifcopenshell.util.selector.filter_elements(tool.Ifc.get(), query)
 
         description = json.dumps({"type": "BBIM_Search", "query": query})
-        group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.name, Description=description)
+        group = [g for g in tool.Ifc.get().by_type("IfcGroup") if g.Name == self.name]
+        if group:
+            group = group[0]
+        else:
+            group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.name, Description=description)
         ifcopenshell.api.run("group.assign_group", tool.Ifc.get(), products=results, group=group)
 
     def invoke(self, context, event):
@@ -176,6 +180,121 @@ class LoadSearch(Operator, tool.Ifc.Operator):
         return context.window_manager.invoke_props_dialog(self)
 
 
+class ColourByProperty(Operator):
+    bl_idname = "bim.colour_by_property"
+    bl_label = "Colour by Property"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        IfcStore.begin_transaction(self)
+        self.store_state(context)
+        result = self._execute(context)
+        IfcStore.add_transaction_operation(self)
+        IfcStore.end_transaction(self)
+        return result
+
+    def _execute(self, context):
+        props = context.scene.BIMSearchProperties
+        query = props.colourscheme_query
+
+        if not query:
+            self.report({"ERROR"}, "No Query Provided")
+            return {"CANCELLED"}
+
+        colours = cycle(colour_list)
+        colourscheme = {}
+
+        if len(props.colourscheme):
+            colourscheme = {cs.name: cs.colour[0:3] for cs in props.colourscheme}
+
+        for obj in context.visible_objects:
+            element = tool.Ifc.get_entity(obj)
+            if not element:
+                continue
+            value = str(ifcopenshell.util.selector.get_element_value(element, query))
+            if value not in colourscheme:
+                colourscheme[value] = next(colours)[0:3]
+            obj.color = (*colourscheme[value], 1)
+        areas = [a for a in context.screen.areas if a.type == "VIEW_3D"]
+        if areas:
+            areas[0].spaces[0].shading.color_type = "OBJECT"
+
+        props.colourscheme.clear()
+        for value, colour in colourscheme.items():
+            new = props.colourscheme.add()
+            new.name = str(value)
+            new.colour = colour[0:3]
+        return {"FINISHED"}
+
+    def store_state(self, context):
+        areas = [a for a in context.screen.areas if a.type == "VIEW_3D"]
+        if areas:
+            self.transaction_data = {"area": areas[0], "color_type": areas[0].spaces[0].shading.color_type}
+
+    def rollback(self, data):
+        if data:
+            data["area"].spaces[0].shading.color_type = data["color_type"]
+
+    def commit(self, data):
+        if data:
+            data["area"].spaces[0].shading.color_type = "OBJECT"
+
+
+class SaveColourscheme(Operator, tool.Ifc.Operator):
+    bl_idname = "bim.save_colourscheme"
+    bl_label = "Save Colourscheme"
+    bl_description = "Save colourscheme to an IFC group"
+    bl_options = {"REGISTER", "UNDO"}
+    name: StringProperty(name="Name")
+
+    def _execute(self, context):
+        if not self.name:
+            return
+
+        props = context.scene.BIMSearchProperties
+        query = props.colourscheme_query
+
+        group = [g for g in tool.Ifc.get().by_type("IfcGroup") if g.Name == self.name]
+        if group:
+            group = group[0]
+            description = json.loads(group.Description)
+            description["colourscheme"] = {cs.name: cs.colour[0:3] for cs in props.colourscheme}
+            description["colourscheme_query"] = query
+            group.Description = json.dumps(description)
+        else:
+            description = json.dumps({"type": "BBIM_Search", "colourscheme": query})
+            group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.name, Description=description)
+
+    def invoke(self, context, event):
+        return context.window_manager.invoke_props_dialog(self)
+
+
+class LoadColourscheme(Operator, tool.Ifc.Operator):
+    bl_idname = "bim.load_colourscheme"
+    bl_label = "Load Colourscheme"
+    bl_description = "Load colourscheme from an IFC group"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.scene.BIMSearchProperties
+        group = tool.Ifc.get().by_id(int(props.saved_searches))
+        description = json.loads(group.Description)
+        props.colourscheme_query = description.get("colourscheme_query")
+        props.colourscheme.clear()
+        for name, colour in description.get("colourscheme", {}).items():
+            new = props.colourscheme.add()
+            new.name = name
+            new.colour = colour
+
+    def draw(self, context):
+        props = context.scene.BIMSearchProperties
+        row = self.layout.row()
+        row.prop(props, "saved_colourschemes", text="")
+
+    def invoke(self, context, event):
+        return context.window_manager.invoke_props_dialog(self)
+
+
 class SelectGlobalId(Operator):
     """Click to select the objects that match with the given Global ID"""
 
@@ -503,14 +622,16 @@ class ColourByClass(Operator):
 
 
 class ResetObjectColours(Operator):
-    """Reset the colour of selected objects"""
+    """Reset the colour of visible objects"""
 
     bl_idname = "bim.reset_object_colours"
     bl_label = "Reset Colours"
 
     def execute(self, context):
-        for obj in context.selected_objects:
+        for obj in context.visible_objects:
             obj.color = (1, 1, 1, 1)
+        props = context.scene.BIMSearchProperties
+        props.colourscheme.clear()
         return {"FINISHED"}
 
 

src/blenderbim/blenderbim/bim/module/search/prop.py

@@ -22,7 +22,7 @@ from ifcopenshell.util.selector import Selector
 import blenderbim.tool as tool
 from blenderbim.bim.prop import ObjProperty, StrProperty
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.search.data import SearchData
+from blenderbim.bim.module.search.data import SearchData, ColourByPropertyData
 from bpy.types import PropertyGroup
 from blenderbim.tool.ifc import Ifc
 from . import ui, prop, operator
@@ -44,6 +44,12 @@ def get_saved_searches(self, context):
     return SearchData.data["saved_searches"]
 
 
+def get_saved_colourschemes(self, context):
+    if not ColourByPropertyData.is_loaded:
+        ColourByPropertyData.load()
+    return ColourByPropertyData.data["saved_colourschemes"]
+
+
 def update_is_class_selected(self, context):
     if self.is_selected:
         for obj in self.unselected_objects:
@@ -87,9 +93,9 @@ class BIMFilterBuildingStoreys(PropertyGroup):
 
 
 class BIMFacet(PropertyGroup):
-    name: StringProperty(name="Type")
+    name: StringProperty(name="Name")
-    pset: StringProperty(name="Type")
+    pset: StringProperty(name="Pset")
-    value: StringProperty(name="Type")
+    value: StringProperty(name="Value")
     type: StringProperty(name="Type")
     comparison: StringProperty(name="Comparison")
 
@@ -98,6 +104,11 @@ class BIMFilterGroup(PropertyGroup):
     filters: CollectionProperty(type=BIMFacet, name="filters")
 
 
+class BIMColour(PropertyGroup):
+    name: StringProperty(name="Name")
+    colour: FloatVectorProperty(name="Colour", subtype="COLOR", default=(1, 0, 0), min=0.0, max=1.0)
+
+
 class BIMSearchProperties(PropertyGroup):
     filter_query: StringProperty(name="Filter Query")
     filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")
@@ -114,6 +125,10 @@ class BIMSearchProperties(PropertyGroup):
         ],
     )
     saved_searches: EnumProperty(items=get_saved_searches, name="Saved Searches")
+    saved_colourschemes: EnumProperty(items=get_saved_colourschemes, name="Saved Colourschemes")
+    colourscheme_query: StringProperty(name="Colourscheme Query", default="class")
+    colourscheme: CollectionProperty(type=BIMColour)
+    active_colourscheme_index: IntProperty(name="Active Colourscheme Index")
     should_use_regex: BoolProperty(name="Search With Regex", default=False)
     should_ignorecase: BoolProperty(name="Search Ignoring Case", default=True)
     global_id: StringProperty(name="GlobalId")

src/blenderbim/blenderbim/bim/module/search/ui.py

@@ -18,7 +18,7 @@
 
 import bpy
 from bpy.types import Panel
-from blenderbim.bim.module.search.data import SearchData
+from blenderbim.bim.module.search.data import SearchData, ColourByPropertyData
 
 
 class BIM_PT_search(Panel):
@@ -138,6 +138,49 @@ class BIM_PT_search(Panel):
         row.operator("bim.activate_ifc_building_storey_filter", icon="FILTER")
 
 
+class BIM_PT_colour_by_property(Panel):
+    bl_label = "Colour By Property"
+    bl_idname = "BIM_PT_colour_by_property"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_parent_id = "BIM_PT_tab_grouping_and_filtering"
+
+    def draw(self, context):
+        if not ColourByPropertyData.is_loaded:
+            ColourByPropertyData.load()
+
+        props = context.scene.BIMSearchProperties
+
+        row = self.layout.row(align=True)
+        row.label(text=f"{len(ColourByPropertyData.data['saved_colourschemes'])} Saved Colourschemes")
+
+        if ColourByPropertyData.data["saved_colourschemes"]:
+            row.operator("bim.load_colourscheme", text="", icon="IMPORT")
+        row.operator("bim.save_colourscheme", text="", icon="EXPORT")
+
+        row = self.layout.row()
+        row.prop(props, "colourscheme_query", text="Query")
+
+        row = self.layout.row(align=True)
+        row.operator("bim.colour_by_property", icon="BRUSH_DATA")
+        row.operator("bim.reset_object_colours")
+
+        if len(props.colourscheme):
+            self.layout.template_list("BIM_UL_colourscheme", "", props, "colourscheme", props, "active_colourscheme_index")
+
+
+class BIM_UL_colourscheme(bpy.types.UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        props = context.scene.BIMWorkScheduleProperties
+        if not item:
+            return
+        row = layout.row(align=True)
+        row.label(text=item.name)
+        row.prop(item, "colour", text="")
+
+
 class BIM_UL_ifc_class_filter(bpy.types.UIList):
     use_filter_linked: bpy.props.BoolProperty(name="Included", default=True, options=set(), description="Filter")
 

src/blenderbim/blenderbim/tool/search.py

@@ -12,9 +12,8 @@ class Search(blenderbim.core.tool.Search):
     def import_filter_query(cls, group, filter_groups):
         query = json.loads(group.Description)["query"]
         filter_groups.clear()
-        l = lark.Lark(ifcopenshell.util.selector.filter_elements_grammar)
         transformer = ImportFilterQueryTransformer(filter_groups)
-        transformer.transform(l.parse(query))
+        transformer.transform(ifcopenshell.util.selector.filter_elements_grammar.parse(query))
 
     @classmethod
     def export_filter_query(cls, filter_groups):

src/ifcopenshell-python/ifcopenshell/util/selector.py

@@ -24,7 +24,7 @@ import ifcopenshell.util.element
 import ifcopenshell.util.classification
 
 
-filter_elements_grammar = """start: filter_group
+filter_elements_grammar = lark.Lark("""start: filter_group
     filter_group: facet_list ("+" facet_list)*
     facet_list: facet ("," facet)*
 
@@ -86,38 +86,36 @@ filter_elements_grammar = """start: filter_group
     NEWLINE: (CR? LF)+
 
     %ignore WS // Disregard spaces in text
-"""
+""")
+
+get_element_grammar = lark.Lark("""start: WORD | ESCAPED_STRING | keys_regex | keys_quoted | keys_simple
+    keys_regex: "r" ESCAPED_STRING ("." ESCAPED_STRING)*
+    keys_quoted: ESCAPED_STRING ("." ESCAPED_STRING)*
+    keys_simple: /[^\\W][^.=<>!%*\\]]*/ ("." /[^\\W][^.=<>!%*\\]]*/)*
+
+    // Embed common.lark for packaging
+    _STRING_INNER: /.*?/
+    _STRING_ESC_INNER: _STRING_INNER /(?<!\\\\)(\\\\\\\\)*?/
+    ESCAPED_STRING : "\\"" _STRING_ESC_INNER "\\""
+    LCASE_LETTER: "a".."z"
+    UCASE_LETTER: "A".."Z"
+    LETTER: UCASE_LETTER | LCASE_LETTER
+    WORD: LETTER+
+    WS: /[ \\t\\f\\r\\n]/+
+
+    %ignore WS // Disregard spaces in text
+ """)
 
 
 def get_element_value(element, query):
-    l = lark.Lark(
+    start = get_element_grammar.parse(query)
-        """start: WORD | ESCAPED_STRING | keys_regex | keys_quoted | keys_simple
-                keys_regex: "r" ESCAPED_STRING ("." ESCAPED_STRING)*
-                keys_quoted: ESCAPED_STRING ("." ESCAPED_STRING)*
-                keys_simple: /[^\\W][^.=<>!%*\\]]*/ ("." /[^\\W][^.=<>!%*\\]]*/)*
-
-                // Embed common.lark for packaging
-                _STRING_INNER: /.*?/
-                _STRING_ESC_INNER: _STRING_INNER /(?<!\\\\)(\\\\\\\\)*?/
-                ESCAPED_STRING : "\\"" _STRING_ESC_INNER "\\""
-                LCASE_LETTER: "a".."z"
-                UCASE_LETTER: "A".."Z"
-                LETTER: UCASE_LETTER | LCASE_LETTER
-                WORD: LETTER+
-                WS: /[ \\t\\f\\r\\n]/+
-
-                %ignore WS // Disregard spaces in text
-             """
-    )
-    start = l.parse(query)
     filter_query = Selector.parse_filter_query(start.children[0])
     return Selector.get_element_value(element, filter_query["keys"], filter_query["is_regex"])
 
 
 def filter_elements(ifc_file, query, elements=None):
-    l = lark.Lark(filter_elements_grammar)
     transformer = FacetTransformer(ifc_file, elements)
-    transformer.transform(l.parse(query))
+    transformer.transform(filter_elements_grammar.parse(query))
     return transformer.get_results()
     return transformer.elements