|
|
@@ -0,0 +1,98 @@
|
|
|
+from Tkinter import *
|
|
|
+
|
|
|
+JUMP = 40
|
|
|
+MAX_WIDTH = 20 * JUMP
|
|
|
+MAX_HEIGHT = 20 * JUMP
|
|
|
+
|
|
|
+root = Tk()
|
|
|
+
|
|
|
+canvas = Canvas(root, width=MAX_WIDTH, height=MAX_HEIGHT, bg="white")
|
|
|
+canvas.pack()
|
|
|
+
|
|
|
+name = 0
|
|
|
+
|
|
|
+def lower(value):
|
|
|
+ return value / JUMP * JUMP
|
|
|
+
|
|
|
+def upper(value):
|
|
|
+ return (value / JUMP + 1) * JUMP
|
|
|
+
|
|
|
+def avg(a, b):
|
|
|
+ return float(a + b) / 2
|
|
|
+
|
|
|
+class InterfaceCore():
|
|
|
+ mode = ""
|
|
|
+ drawn = set()
|
|
|
+ refs = dict()
|
|
|
+
|
|
|
+ def set_mode(self, mode):
|
|
|
+ self.mode = mode
|
|
|
+
|
|
|
+ def clicked(self, event):
|
|
|
+ if self.mode == "":
|
|
|
+ print("Please select a block first")
|
|
|
+ else:
|
|
|
+ x = event.x
|
|
|
+ y = event.y
|
|
|
+ r = canvas.create_rectangle(lower(x), lower(y), upper(x), upper(y), fill="white")
|
|
|
+ t = canvas.create_text(avg(lower(x), upper(x)), avg(lower(y), upper(y)), text=self.mode, fill="black")
|
|
|
+ global name
|
|
|
+ b = (lower(x), lower(y), upper(x), upper(y), str(name))
|
|
|
+ self.drawn.add(b)
|
|
|
+ self.refs[str(name)] = [r, t]
|
|
|
+ name += 1
|
|
|
+
|
|
|
+ def find(self, location):
|
|
|
+ x, y = location
|
|
|
+ for e in self.drawn:
|
|
|
+ if (e[0] <= x and
|
|
|
+ e[1] <= y and
|
|
|
+ e[2] >= x and
|
|
|
+ e[3] >= y):
|
|
|
+ return e[4]
|
|
|
+
|
|
|
+ print("Found nothing at that location!")
|
|
|
+ return []
|
|
|
+
|
|
|
+ def draw(self, start, end):
|
|
|
+ source = self.find(start)
|
|
|
+ target = self.find(end)
|
|
|
+
|
|
|
+ print("Connect from %s to %s" % (source, target))
|
|
|
+
|
|
|
+ if source and target:
|
|
|
+ canvas.create_line(start[0], start[1], end[0], end[1], fill="black", arrow=LAST)
|
|
|
+
|
|
|
+core = InterfaceCore()
|
|
|
+
|
|
|
+def addition():
|
|
|
+ core.set_mode("+")
|
|
|
+
|
|
|
+def negation():
|
|
|
+ core.set_mode("-")
|
|
|
+
|
|
|
+def clicked(event):
|
|
|
+ core.clicked(event)
|
|
|
+
|
|
|
+def draw(event):
|
|
|
+ global start_location
|
|
|
+ start_location = (event.x, event.y)
|
|
|
+
|
|
|
+def release(event):
|
|
|
+ core.draw(start_location, (event.x, event.y))
|
|
|
+
|
|
|
+Button(root, text="+", command=addition).pack()
|
|
|
+Button(root, text="-", command=negation).pack()
|
|
|
+
|
|
|
+core.canvas = canvas
|
|
|
+
|
|
|
+for i in range(JUMP, MAX_HEIGHT, JUMP):
|
|
|
+ canvas.create_line(0, i, MAX_HEIGHT, i, fill="grey")
|
|
|
+for i in range(JUMP, MAX_WIDTH, JUMP):
|
|
|
+ canvas.create_line(i, 0, i, MAX_WIDTH, fill="grey")
|
|
|
+
|
|
|
+canvas.bind("<Button-1>", clicked)
|
|
|
+canvas.bind("<Button-3>", draw)
|
|
|
+canvas.bind("<ButtonRelease-3>", release)
|
|
|
+
|
|
|
+root.mainloop()
|
