release v0.8.1

closes #13
added ATTDEF management methods to BlockLayout (has_attdef, get_attdef, get_attdef_text)
added (read/write) properties to ATTDEF/ATTRIB for setting flags (is_const, is_invisible, is_verify, is_preset)

NEWS.rst

@@ -2,9 +2,11 @@
 News
 ====
 
-Version 0.8.1
+Version 0.8.1 - 2017-04-06
 
-  * added support for constant ATTRIB/ATTDEF to the INSERT (block reference) entity
+  * NEW: added support for constant ATTRIB/ATTDEF to the INSERT (block reference) entity
+  * NEW: added ATTDEF management methods to BlockLayout (has_attdef, get_attdef, get_attdef_text)
+  * NEW: added (read/write) properties to ATTDEF/ATTRIB for setting flags (is_const, is_invisible, is_verify, is_preset)
 
 Version 0.8.0 - 2017-03-28
 

docs/source/blocks.rst

@@ -164,6 +164,22 @@ field_length          R12     just relevant to CAD programs for validating user
 
    DXF attributes namespace, read/write DXF attributes, like :code:`object.dxf.layer = 'MyLayer'`
 
+.. attribute:: Attdef.is_invisibe
+
+   (read/write) Attribute is invisible (does not appear).
+
+.. attribute:: Attdef.is_const
+
+   (read/write) This is a constant attribute.
+
+.. attribute:: Attdef.is_verify
+
+   (read/write) Verification is required on input of this attribute. (CAD application feature)
+
+.. attribute:: Attdef.is_preset
+
+   (read/write) No prompt during insertion. (CAD application feature)
+
 .. method:: Attdef.get_pos()
 
    see method :meth:`Text.get_pos`.
@@ -211,6 +227,22 @@ text_generation_flag  R12     text generation flags (int)
 
    DXF attributes namespace, read/write DXF attributes, like :code:`object.dxf.layer = 'MyLayer'`
 
+.. attribute:: Attrib.is_invisibe
+
+   (read/write) Attribute is invisible (does not appear).
+
+.. attribute:: Attrib.is_const
+
+   (read/write) This is a constant attribute.
+
+.. attribute:: Attrib.is_verify
+
+   (read/write) Verification is required on input of this attribute. (CAD application feature)
+
+.. attribute:: Attrib.is_preset
+
+   (read/write) No prompt during insertion. (CAD application feature)
+
 .. method:: Attrib.get_pos()
 
    see method :meth:`Text.get_pos`.

docs/source/layouts.rst

@@ -250,3 +250,17 @@ BlockLayout
 .. method:: BlockLayout.attdefs()
 
    Iterator for included :class:`Attdef` entities.
+
+.. method:: BlockLayout.has_attdef(tag)
+
+   Returns `True` if an attdef `tag` exists else `False`.
+
+.. method:: BlockLayout.get_attdef(tag)
+
+   Get the attribute definition object :class:`Attdef` with :code:`object.dxf.tag == tag`, returns
+   :code:`None` if not found.
+
+.. method:: BlockLayout.get_attdef_text(tag, default=None)
+
+   Get content text for attdef `tag` as string or return `default` if no attdef `tag` exists.
+

ezdxf/legacy/graphics.py

@@ -568,8 +568,8 @@ class SeqEnd(GraphicEntity):
         'paperspace': DXFAttr(67, default=0),
     }))
 
-_ATTDEF_TPL = """  0
-ATTDEF
+_ATTRIB_TPL = """  0
+ATTRIB
   5
 0
   8
@@ -584,8 +584,6 @@ class SeqEnd(GraphicEntity):
 1.0
   1
 DEFAULTTEXT
-  3
-PROMPTTEXT
   2
 TAG
  70
@@ -615,13 +613,19 @@ class SeqEnd(GraphicEntity):
 """
 
 
-class Attdef(Text):
-    TEMPLATE = ClassifiedTags.from_text(_ATTDEF_TPL)
+def _set_flag_state(flags, mask, state):
+    if bool(state):
+        return flags | mask
+    else:
+        return flags & ~mask
+
+
+class Attrib(Text):
+    TEMPLATE = ClassifiedTags.from_text(_ATTRIB_TPL)
     DXFATTRIBS = make_attribs({
         'insert': DXFAttr(10, xtype='Point2D/3D'),
         'height': DXFAttr(40),
         'text': DXFAttr(1),
-        'prompt': DXFAttr(3),
         'tag': DXFAttr(2),
         'flags': DXFAttr(70),
         'field_length': DXFAttr(73, default=0),
@@ -635,8 +639,66 @@ class Attdef(Text):
         'align_point': DXFAttr(11, xtype='Point2D/3D'),
     })
 
-_ATTRIB_TPL = """  0
-ATTRIB
+    @property
+    def is_const(self):
+        """
+        This is a constant attribute.
+        """
+        return self.dxf.flags & const.ATTRIB_CONST
+
+    @is_const.setter
+    def is_const(self, state):
+        """
+        This is a constant attribute.
+        """
+        self.dxf.flags = _set_flag_state(self.dxf.flags, const.ATTRIB_CONST, state)
+
+    @property
+    def is_invisible(self):
+        """
+        Attribute is invisible (does not appear).
+        """
+        return self.dxf.flags & const.ATTRIB_INVISIBLE
+
+    @is_invisible.setter
+    def is_invisible(self, state):
+        """
+        Attribute is invisible (does not appear).
+        """
+        self.dxf.flags = _set_flag_state(self.dxf.flags, const.ATTRIB_INVISIBLE, state)
+
+    @property
+    def is_verify(self):
+        """
+        Verification is required on input of this attribute. (CAD application feature)
+        """
+        return self.dxf.flags & const.ATTRIB_VERIFY
+
+    @is_verify.setter
+    def is_verify(self, state):
+        """
+        Verification is required on input of this attribute. (CAD application feature)
+        """
+        self.dxf.flags = _set_flag_state(self.dxf.flags, const.ATTRIB_VERIFY, state)
+
+
+    @property
+    def is_preset(self):
+        """
+        No prompt during insertion. (CAD application feature)
+        """
+        return self.dxf.flags & const.ATTRIB_IS_PRESET
+
+    @is_preset.setter
+    def is_preset(self, state):
+        """
+        No prompt during insertion. (CAD application feature)
+        """
+        self.dxf.flags = _set_flag_state(self.dxf.flags, const.ATTRIB_IS_PRESET, state)
+
+
+_ATTDEF_TPL = """  0
+ATTDEF
   5
 0
   8
@@ -651,6 +713,8 @@ class Attdef(Text):
 1.0
   1
 DEFAULTTEXT
+  3
+PROMPTTEXT
   2
 TAG
  70
@@ -680,12 +744,13 @@ class Attdef(Text):
 """
 
 
-class Attrib(Text):
-    TEMPLATE = ClassifiedTags.from_text(_ATTRIB_TPL)
+class Attdef(Attrib):
+    TEMPLATE = ClassifiedTags.from_text(_ATTDEF_TPL)
     DXFATTRIBS = make_attribs({
         'insert': DXFAttr(10, xtype='Point2D/3D'),
         'height': DXFAttr(40),
         'text': DXFAttr(1),
+        'prompt': DXFAttr(3),
         'tag': DXFAttr(2),
         'flags': DXFAttr(70),
         'field_length': DXFAttr(73, default=0),
@@ -699,6 +764,7 @@ class Attrib(Text):
         'align_point': DXFAttr(11, xtype='Point2D/3D'),
     })
 
+
 _POLYLINE_TPL = """  0
 POLYLINE
   5