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entity_block.py
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#entity_block.py
import tkinter as tk
from base_block import DraggableBlock
from port_symbol import PortSymbol
class EntityBlock(DraggableBlock):
def __init__(self, canvas, x, y, name, generics, ports, conduit=False):
super().__init__(canvas, x, y)
self.name = name
self.generics = generics
self.ports = ports
self.conduit = conduit
lines = [name] + [p["dir"]+" "+p["name"] for p in ports]
ml = 10
if lines:
ml = max(len(s) for s in lines)
self.width = max(100, 12*ml)
ic = sum(1 for p in ports if p["dir"]=="in")
oc = sum(1 for p in ports if p["dir"]=="out")
mp = max(ic,oc)
self.height = max(40+mp*20, 60)
fc = "lightyellow" if conduit else "lightblue"
self.obj = self.canvas.create_rectangle(
x, y, x+self.width, y+self.height, fill=fc, outline="black"
)
self.text = self.canvas.create_text(
x+self.width/2, y+10, text=name, font=("Arial",10), anchor="n", fill="black"
)
self.canvas.tag_bind(self.obj, "<Button-3>", self.on_right_click)
self.canvas.tag_bind(self.text, "<Button-3>", self.on_right_click)
self.canvas.tag_bind(self.obj, "<Button-1>", self.on_click)
self.canvas.tag_bind(self.text, "<Button-1>", self.on_click)
self.menu = tk.Menu(self.canvas, tearoff=0)
self.menu.add_command(label="Delete", command=self.delete_self)
if not conduit:
self.menu.add_command(label="Rename", command=self.rename_self)
if generics:
self.menu.add_command(label="Edit Generics", command=self.edit_generics)
self.menu.add_separator()
self.menu.add_command(label="Remove All Connections", command=self.remove_all_connections)
self.port_symbols = []
lc = 0
rc = 0
sy = y + 30
for p in ports:
if conduit:
if p["dir"] == "in":
fd = "in"
elif p["dir"] == "out":
fd = "out"
else:
fd = "inout"
pf = {"name":p["name"], "dir":fd, "type":p["type"]}
if fd in ["out","inout"]:
px = x + self.width - 30
py = sy + rc*20
rc += 1
else:
px = x + 30
py = sy + lc*20
lc += 1
ps = PortSymbol(self.canvas, px, py, self, pf, True)
else:
if p["dir"] in ["in","inout"]:
px = x - 10
py = sy + lc*20
lc += 1
else:
px = x + self.width + 10
py = sy + rc*20
rc += 1
ps = PortSymbol(self.canvas, px, py, self, p, False)
self.canvas.data["port_map"][ps.id] = ps
self.canvas.data["port_map"][ps.label_id] = ps
self.port_symbols.append(ps)
self.generic_values = {}
if self.generics:
self.prompt_generics()
def on_right_click(self, event):
self.menu.post(event.x_root, event.y_root)
def delete_self(self):
for p in self.port_symbols[:]:
self.remove_port(p)
self.canvas.delete(self.obj)
self.canvas.delete(self.text)
if self in self.canvas.data["blocks"]:
self.canvas.data["blocks"].remove(self)
def rename_self(self):
self.rename_block("Rename Entity")
def move_block(self, dx, dy):
self.canvas.move(self.obj, dx, dy)
self.canvas.move(self.text, dx, dy)
def move_ports(self, dx, dy):
for p in self.port_symbols:
p.x += dx
p.y += dy
self.canvas.move(p.id, dx, dy)
self.canvas.move(p.label_id, dx, dy)
def update_connections(self):
cd = self.canvas.data["connections"]
for c in cd:
if c[0] in self.port_symbols or c[1] in self.port_symbols:
self.update_curved_line(c[2], c[0], c[1])
def remove_all_connections(self):
cs = []
for p in self.port_symbols:
cs.extend([c for c in self.canvas.data["connections"] if c[0] == p or c[1] == p])
for c_ in cs:
self.canvas.delete(c_[2])
self.canvas.data["connections"].remove(c_)
def prompt_generics(self):
w = tk.Toplevel(self.canvas)
w.title("Set Generics for "+self.name)
self.generic_entries = {}
for g in self.generics:
f = tk.Frame(w)
f.pack(pady=2,padx=5,fill='x')
tk.Label(f, text=g["name"] + " ("+g["type"]+"):").pack(side="left")
e = tk.Entry(f)
e.pack(side="left", fill="x", expand=True)
if g.get("default"):
e.insert(0, g["default"])
self.generic_entries[g["name"]] = e
def ok():
for g in self.generics:
n = g["name"]
v = self.generic_entries[n].get().strip()
if not v:
v = g.get("default")
if g["type"].lower() == "integer":
v = int(v)
elif g["type"].lower() == "string":
if not (v.startswith('"') and v.endswith('"')):
v = '"'+v+'"'
self.generic_values[n] = v
w.destroy()
tk.Button(w, text="OK", command=ok).pack(pady=5)
def edit_generics(self):
w = tk.Toplevel(self.canvas)
w.title("Edit Generics for "+self.name)
self.generic_entries = {}
for g in self.generics:
f = tk.Frame(w)
f.pack(pady=2,padx=5,fill='x')
cv = self.generic_values.get(g["name"], g.get("default",""))
tk.Label(f, text=g["name"]+" ("+g["type"]+"):").pack(side="left")
e = tk.Entry(f)
e.pack(side="left", fill="x", expand=True)
e.insert(0, str(cv))
self.generic_entries[g["name"]] = e
def ok():
for g in self.generics:
n = g["name"]
v = self.generic_entries[n].get().strip()
if not v:
v = g.get("default")
if g["type"].lower() == "integer":
v = int(v)
elif g["type"].lower() == "string":
if not (v.startswith('"') and v.endswith('"')):
v = '"'+v+'"'
self.generic_values[n] = v
w.destroy()
tk.Button(w, text="OK", command=ok).pack(pady=5)