At 17:01 30.06.01 +0200, Michael Maluck wrote:
>Hi all,
>
>tried to get some object properties of "UML Class" objects in the
>python dia console.
>
>i comiled dia 0.88.1 from source with the --with-python option.
>dia.active_display().diagram.layers[0].properties.get("obj_pos") returns
>always None.
Doesn't it give a runtime-error AttributeError: properties ?
dia.active_display().diagram.layers[0].objects[0].properties['obj_pos'].value
works:
<DiaPoint object at ...>
[Though there are probably Dia objects, which do not support the property
api yet]
>The has_key method says that the property exists. It is also listed
>in keys().
The main problem is, that the layer object has no properties, because it
isn't a DiaObject as one may expect. The property api is only supported by
most objects within the diagram, like
dia.active_display().diagram.layers[0].objects[0].type
<DiaObjectType 'Standard - Text'>
>i doesn't matter which property i want to get. it doesn't work for all.
>any ideas?
>
There is probably no senseful way to write Dia Extensions in Python without
being able to read and understand the C-Sources
>are there any docs for the python plugin?
NAFAIK. I've attached a small interface description extracted from the
C-Source, no real documentation :(
>is it possible to use the dia api not only in the python dia console?
>
Yes. There are two examples how to write an export filter in Python, but
again I don't think it would be much fun to write one, without being able
to debug or 'investigate the limitations in' the Python-Plugin as well.
The Plugin will probably remain such limited as it is, at least until it
(and first the Dia Object System) is converted to Gtk+2.0 especially the
GObject system, because the current access does not allow to ref-count the
objects, to easily back-propagate property changes, etc. ...
Hans
dia.active_display() DiaDisplay
dia.diagrams() DiaDiagram[n]
dia.get_object_type(string) DiaObjectType 'name_of_object_type
dia.load(string) 'filename
dia.register_export(string,string,object) 'name,extension,DiaRenderer
dia.register_callback(string,string,function)
'description,menupath,callback(DiaDiagramData,int)
dia.update_all()
DiaArrow
type int
width double
length double
DiaBezPoint
p1 DiaPoint
p2 DiaPoint
p3 DiaPoint
DiaColor
red double
green double
blue double
DiaConnectionPoint
connected DiaObject[n]
object DiaObject
pos double[n] '(x,y)
DiaDiagram
raise_layer()
lower_layer()
add_layer(string[,int]) DiaLayer 'name, optional poisition
set_active_layer(DiaLayer)
delete_layer(DiaLayer)
select(DiaObject)
is_selected(DiaObject) int
unselect(DiaObject)
remove_all_selected()
update_extents()
get_sorted_selected() DiaObject[n]
get_sorted_selected_remove()
add_update(double,double,double,double)
add_update_all()
flush()
find_clicked_object((double,double),double) DiaObject '(x,y), distance
find_closest_handle(double,double) DiaHandle
find_closest_connectionpoint(double,double) (DiaHandle,DiaObject) 'x,y
group_selected()
ungroup_selected()
save([string]) int 'optional filename
DiaDiagramData
extents DiaRectangle
bg_color DiaColor
paper <not implemented>
grid.width double[2]
grid.visible int[2]
hguides double[n]
vguides double[n]
layers DiaLayer[n]
active_layer DiaLayer
selected DiaObject[n]
DiaDisplay
diagram DiaDiagram
origin double[2] 'todo? DiaPoint
visible double[4] 'todo? DiaRectangle
zoom_factor double
add_update_all()
flush()
set_origion(double,double)
zoom(double,double,double) 'pt.x, pt.x, factor
resize_canvas(int,int) 'width, height
close()
set_title(string)
scroll(double,double) 'delta x,y
scroll_up()
scroll_down()
scroll_left()
scroll_right()
DiaError
write(object) 'writes obeject as string
DiaExportFilter
<see export-object.py or export-render.py or pydia-render.c>
DiaFont
name string
DiaHandle
connect_type int
connected_to DiaConnectionPoint
id int
pos double[2] '(x,y)
type int
DiaImage
width int
height int
rgb_data char[widht*height*3]
mask_data char[widht*height]
filename string
DiaLayer
extents double[4] '(top,left,bottom,right)
name string
objects DiaObject[n]
visible int
destroy()
object_index() int
add_object(DiaObject[,int]) 'object, optional index 'at'
remove_object(DiaObject)
find_objects_in_rectangle(double,double,double,double) DiaObject
'top,left,right,bottom
find_closest_object(double,double,double) DiaObject 'x,y,maxdist
find_closest_connection_point(double,double) (double,DiaConnectionPoint)
'(distance, cpoint)
update_extents()
DiaObject
bounding_box DiaRectangle
connections DiaConnectionPoint[n]
handles DiaHandle[n]
properties DiaProperties
type DiaObjectType
destroy()
distance_from(double,double) double
copy() DiaObject
move(double,double) 'x,y
move_handle(DiaHandle,(double,double),int,int) 'handle, (point.x, point.y),
reason, modifiers
DiaObjectType
name string
version int
create(double,double[,int]) (DiaObject,DiaHandle,DiaHandle) 'x,y,optional
user_data pointer
DiaPoint
x double
y double
DiaProperties
<dictionary interface>
DiaProperty
name string
type int 'type enumeration
value <object> 'as (Dia)Python object
DiaRectangle
top <int|double>
left <int|double>
right <int|double>
bottom <int|double>
-------- Hans "at" Breuer "dot" Org -----------
Tell me what you need, and I'll tell you how to
get along without it. -- Dilbert
