class Line:
CURRENT_COLOR = "black"
TAG = "reta"
i = 0
def __init__(self, canvas):
self.canvas = canvas
self.coordinates = Coordinates(self.canvas)
def addEvents(self):
self.canvas.bind("<1>", self.recomecaLinha)
self.canvas.bind("<B1-Motion>", self.desenhaReta)
def recomecaLinha(self, event):
self.ultimo_P = self.coordinates.coordenadas()
self.i = self.i + 1
self.TAG = "reta" + str(self.i)
def desenhaReta(self, event):
(x, y) = self.coordinates.coordenadas()
try:
P = (x, y)
self.canvas.delete(self.TAG)
self.canvas.create_line(self.ultimo_P, P, fill=self.CURRENT_COLOR, tag=self.TAG)
except:
return
class Rectangule():
CURRENT_COLOR = "black"
TAG = 'retangulo'
i = 0
##
# Funcao init
# @param canvas : canvas where to draw the rectangle
#
def __init__(self, canvas):
self.canvas = canvas
self.coordinates = Coordinates(self.canvas)
##
# Faze binding entre botoes e funcaos
def addEvents(self):
self.canvas.bind("<1>", self.recomecaLinha)
self.canvas.bind('<B1-Motion>',self.desenhaRectangulo)
##
# Restart a new rectangle
# @param event : Tk event
def recomecaLinha(self,event):
self.ultimo_P=self.coordinates.coordenadas()
self.i = self.i+1
self.TAG = 'retangulo' + str(self.i)
##
# Draw the rectanle on the canvas
# @param event : Tk event
def desenhaRectangulo(self,event):
(x,y) = self.coordinates.coordenadas()
try:
P = (x,y)
self.canvas.delete(self.TAG)
self.canvas.create_rectangle(self.ultimo_P,P,outline=self.CURRENT_COLOR,fill='white',tag=self.TAG)
except:
return
class Designer:
CURRENT_COLOR = "black"
##
# Funcao init
# @param canvas : canvas where to draw
def __init__(self, canvas):
self.canvas = canvas
self.coordinates = Coordinates(self.canvas)
##
# Faze binding entre botoes e funcaos
def addEvents(self):
self.canvas.bind("<B1-Motion>", self.desenhaLinha)
self.canvas.bind("<1>", self.recomecaLinha)
##
# Draw the line
# @param event : Tk event
def desenhaLinha(self, event):
(x, y) = self.coordinates.coordenadas()
try:
P = (x, y)
self.canvas.create_line(self.ultimo_P, P, fill=self.CURRENT_COLOR)
self.ultimo_P = P
except:
self.ultimo_P = (x, y)
##
# Restart a new line
# @param event : Tk event
def recomecaLinha(self, event):
self.ultimo_P = self.coordinates.coordenadas()
class Writer():
CURRENT_COLOR = "black"
##
# Funcao init
# @param canvas : canvas where to write
#
def __init__(self, canvas):
self.canvas = canvas
self.coordinates = Coordinates(self.canvas)
##
# Faze binding entre botoes e funcaos
#
def addEvents(self):
self.canvas.bind("<Double-Button-1>", self.set_focus)
self.canvas.bind("<1>", self.set_cursor)
self.canvas.bind("<Key>", self.handle_key)
##
# Has the canvas the focus?
# @return true if object has focus or false if not
def has_focus(self):
return self.canvas.focus()
##
# Has the canvas the selection?
# @return true if object has selection or false if not
def has_selection(self):
# hack to work around bug in Tkinter 1.101 (Python 1.5.1)
return self.canvas.tk.call(self.canvas._w, 'select', 'item')
##
# Set the focus on the canvas
# @param event : Tk event
def set_focus(self, event):
self.set_cursor(event)
(x,y) = self.coordinates.coordenadas()
self.canvas.create_text(x, y,text=' ',fill=self.CURRENT_COLOR)
if self.canvas.type(CURRENT) != "text":
return
self.coordinates.highlight(CURRENT)
# move focus to item
self.canvas.focus_set() # move focus to canvas
self.canvas.focus(CURRENT) # set focus to text item
self.canvas.select_from(CURRENT, 0)
self.canvas.select_to(CURRENT, END)
##
# Set the cursor on the item
# @param event : Tk event
def set_cursor(self,event):
# move insertion cursor
item = self.has_focus()
if not item:
self.canvas.select_clear()
return # or do something else
# translate to the canvas coordinate system
x = self.canvas.canvasx(event.x)
y = self.canvas.canvasy(event.y)
self.canvas.icursor(item, "@%d,%d" % (x, y))
self.canvas.select_clear()
##
# Keys handler
# @param event : Tk event
def handle_key(self, event):
# widget-wide key dispatcher
item = self.has_focus()
if not item:
return
insert = self.canvas.index(item, INSERT)
if event.char >= " ":
# printable character
if self.has_selection():
self.canvas.dchars(item, SEL_FIRST, SEL_LAST)
self.canvas.select_clear()
self.canvas.insert(item, "insert", event.char)
self.coordinates.highlight(item)
elif event.keysym == "BackSpace":
if self.has_selection():
self.canvas.dchars(item, SEL_FIRST, SEL_LAST)
self.canvas.select_clear()
else:
if insert > 0:
self.canvas.dchars(item, insert-1, insert)
Coordinates.highlight(item)
# navigation
elif event.keysym == "Home":
self.canvas.icursor(item, 0)
self.canvas.select_clear()
elif event.keysym == "End":
self.canvas.icursor(item, END)
self.canvas.select_clear()
elif event.keysym == "Right":
self.canvas.icursor(item, insert+1)
self.canvas.select_clear()
elif event.keysym == "Left":
self.canvas.icursor(item, insert-1)
self.canvas.select_clear()
elif event.keysym == "Return":
self.canvas.insert(item, insert, '\n')
self.canvas.select_clear()
else:
pass # print event.keysym