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import pygtk |
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import re |
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|
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pygtk.require('2.0') |
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import gtk |
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import ascpy |
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import os.path |
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import cairo |
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|
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class BlockType(): |
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""" |
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All data associated with the MODEL type that is represented by a block. |
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This includes the actual ASCEND TypeDescription as well as the NOTES that |
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are found to represent the inputs and outputs for this block, as well as |
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some kind of graphical representation(s) for the block. In the canvas- |
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based GUI, there will need to be a Cairo-based represention, for drawing |
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on the canvas, as well as some other form, for creating the icon in the |
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block palette. |
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""" |
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|
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def __init__(self, typedesc, notesdb): |
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self.type = typedesc |
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self.notesdb = notesdb |
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self.arrays = [] |
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self.gr = [] # this data structure is for Graphical Representation for custom icons |
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self.port_in = {} # this list is for location of input ports in custom icons |
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self.port_out = {} # this list is for location of output ports in custom icons |
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self.arrays = [] |
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|
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# FIXME BlockType should know what .a4c file to load in order to access |
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# its type definition, for use in unpickling. |
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self.sourcefile = None |
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|
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("inline")) |
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|
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self.inputs = [] |
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self.outputs = [] |
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self.params = [] |
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for n in nn: |
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t = n.getText() |
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if t[0:min(len(t),3)]=="in:": |
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self.inputs += [[n.getId(),self.type.findMember(n.getId()),str(t)]] |
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elif t[0:min(len(t),4)]=="out:": |
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self.outputs += [[n.getId(),self.type.findMember(n.getId()),str(t)]] |
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elif t[0:min(len(t),6)]=="param:": |
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self.params += [[n.getId(),self.type.findMember(n.getId()),str(t)]] |
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|
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self.iconfile = None |
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("icon")) |
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if nn: |
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n = nn[0].getText() |
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if os.path.exists(n): |
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self.iconfile = n |
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|
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self.name = None |
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("block")) |
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if nn: |
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self.name = nn[0].getText() |
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|
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|
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#fetching the graphic string from model file, string manipulating it and storing it in |
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#list of list |
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("graphic")) |
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if nn: |
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t = nn[0].getText().split("\n") |
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for n in t: |
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temp = n.split("-") |
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ll = [] |
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for k in temp: |
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tt = k.split(",") |
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pp = [] |
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for q in tt: |
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q = q.strip("\t") |
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pp.append(q) |
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ll.append(pp) |
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self.gr.append(ll) |
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|
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self.iconfile = self.create_icon(48,48) |
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|
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("port_in")) |
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if nn: |
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n = nn[0].getText().split(" ") |
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for m in n: |
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tt = m.split("-") |
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for k in tt: |
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tpp = k.split(":") |
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loc = tpp[1].split(",") |
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xy = [] |
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xy.append(loc[0]) |
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xy.append(loc[1]) |
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self.port_in[str(tpp[0])] = xy |
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|
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("port_out")) |
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if nn: |
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n = nn[0].getText().split(" ") |
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for m in n: |
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tt = m.split("-") |
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for k in tt: |
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tpp = k.split(":") |
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loc = tpp[1].split(",") |
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xy = [] |
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xy.append(loc[0]) |
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xy.append(loc[1]) |
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self.port_out[str(tpp[0])] = xy |
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|
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("array")) |
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for n in nn: |
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if n: |
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t = n.getText() |
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self.arrays.append([n.getText(),self.type.findMember(n.getText())]) |
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#print self.arrays |
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|
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def get_icon(self, width, height): |
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""" |
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Get a pixbuf representation of the block for use in the block palette |
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(or possibly elsewhere) |
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""" |
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f = self.iconfile |
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if self.iconfile is None: |
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f = "defaultblock.svg" |
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return gtk.gdk.pixbuf_new_from_file_at_size(str(f),width,height) |
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|
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def create_icon(self,width,height): |
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properties = self.gr |
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if len(properties) == 0: |
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return None |
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fo = file("%s.svg"%self.name,'w') |
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## Prepare a destination surface -> out to an SVG file! |
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surface = cairo.SVGSurface (fo,width,height) |
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c = cairo.Context (surface) |
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for m in properties: |
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c.move_to(float(m[0][0])*width*0.1,float(m[0][1])*height*0.1) |
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for mm in m: |
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c.line_to(float(mm[0])*width*0.1,float(mm[1])*height*0.1) |
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c.stroke() |
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surface.finish() |
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return fo.name |
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|
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def __getstate__(self): |
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state = self.__dict__.copy() |
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state['type'] = str(self.type) |
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state['notesdb'] = None |
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state['inputs'] = [] |
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state['outputs'] = [] |
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state['params'] = [] |
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#state['inputs'] = [[str(x) for x in self.inputs[i]] for i in range(len(self.inputs))] |
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#state['outputs'] = [[str(x) for x in self.outputs[i]] for i in range(len(self.outputs))] |
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#state['params'] = [[str(x) for x in self.params[i]] for i in range(len(self.params))] |
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return(state) |
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|
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def __setstate__(self, state): |
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self.__dict__ = state |
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|
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def reattach_ascend(self,library, notesdb): |
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self.type = library.findType(self.type) |
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|
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nn = notesdb.getTypeRefinedNotesLang(self.type,ascpy.SymChar("inline")) |
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|
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self.inputs = [] |
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self.outputs = [] |
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self.params = [] |
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for n in nn: |
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t = n.getText() |
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if t[0:min(len(t),3)]=="in:": |
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self.inputs += [[n.getId(),self.type.findMember(n.getId()),str(t)]] |
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elif t[0:min(len(t),4)]=="out:": |
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self.outputs += [[n.getId(),self.type.findMember(n.getId()),str(t)]] |
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elif t[0:min(len(t),6)]=="param:": |
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self.params += [[n.getId(),self.type.findMember(n.getId()),str(t)]] |
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|
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print "Reattached type '%s', with %d inputs, %d outputs" % (self.type.getName(), len(self.inputs), len(self.outputs)) |
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|
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def get_input_name(self, index): |
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return self.inputs[index].getText() |
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|
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def get_output_name(self, index): |
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return self.outputs[index].getText() |
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