def __draw_move_control(self):
"""
"""
xc, yc = self.__center_of_widget
pc = PolarCoordinate()
self.context.set_dash([1,1])
self.context.arc(xc, yc, 23, 0, 2 * math.pi)
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
for i in range(8):
pc.set_coordinate(23, 45 * i)
x, y = pc.to_cartesian()
self.context.set_dash([1,1])
self.context.move_to(xc, yc)
self.context.line_to(xc + x, yc - y)
self.context.stroke()
self.context.set_dash([1,0])
self.context.arc(xc + x, yc - y, self.__move_radius, 0, 2 * math.pi)
if i == self.__moving:
self.context.set_source_rgb(0.0, 0.0, 0.0)
else:
self.context.set_source_rgb(1.0, 1.0, 1.0)
self.context.fill_preserve()
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
self.context.arc(xc, yc, 6, 0, 2 * math.pi)
if self.__centering == True:
self.context.set_source_rgb(0.0, 0.0, 0.0)
else:
self.context.set_source_rgb(1.0, 1.0, 1.0)
self.context.fill_preserve()
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
return False
def __move_is_clicked(self, pointer):
"""
"""
xc, yc = self.__center_of_widget
pc = PolarCoordinate()
for i in range(8):
pc.set_coordinate(23, 45 * i)
x, y = pc.to_cartesian()
center = (xc + x, yc - y)
result = RadialNet.is_in_circle(pointer,
self.__move_radius,
center)
if result == True:
return i
return None
class ControlNavigation(gtk.DrawingArea):
"""
"""
def __init__(self, radialnet):
"""
"""
gtk.DrawingArea.__init__(self)
self.radialnet = radialnet
self.__rotate_node = PolarCoordinate()
self.__rotate_node.set_coordinate(40, 90)
self.__center_of_widget = (50, 50)
self.__moving = None
self.__centering = False
self.__rotating = False
self.__move_pass = 100
self.__move_position = (0, 0)
self.__move_addition = [(-1, 0),
(-1,-1),
( 0,-1),
( 1,-1),
( 1, 0),
( 1, 1),
( 0, 1),
(-1, 1)]
self.__move_factor = 1
self.__move_factor_limit = 20
self.__rotate_radius = 6
self.__move_radius = 6
self.__rotate_clicked = False
self.__move_clicked = None
self.connect('expose_event', self.expose)
self.connect('button_press_event', self.button_press)
self.connect('button_release_event', self.button_release)
self.connect('motion_notify_event', self.motion_notify)
self.connect('enter_notify_event', self.enter_notify)
self.connect('leave_notify_event', self.leave_notify)
self.connect('key_press_event', self.key_press)
self.connect('key_release_event', self.key_release)
self.add_events(gtk.gdk.BUTTON_PRESS_MASK |
gtk.gdk.BUTTON_RELEASE_MASK |
gtk.gdk.ENTER_NOTIFY |
gtk.gdk.LEAVE_NOTIFY |
gtk.gdk.MOTION_NOTIFY |
gtk.gdk.NOTHING |
gtk.gdk.KEY_PRESS_MASK |
gtk.gdk.KEY_RELEASE_MASK |
gtk.gdk.POINTER_MOTION_HINT_MASK |
gtk.gdk.POINTER_MOTION_MASK)
self.__rotate_node.set_coordinate(40, self.radialnet.get_rotation())
def key_press(self, widget, event):
"""
"""
key = gtk.gdk.keyval_name(event.keyval)
self.queue_draw()
return True
def key_release(self, widget, event):
"""
"""
key = gtk.gdk.keyval_name(event.keyval)
self.queue_draw()
return True
def enter_notify(self, widget, event):
"""
"""
return False
def leave_notify(self, widget, event):
"""
"""
self.queue_draw()
return False
def button_press(self, widget, event):
"""
Drawing callback
@type widget: GtkWidget
@param widget: Gtk widget superclass
@type event: GtkEvent
@param event: Gtk event of widget
@rtype: boolean
@return: Indicator of the event propagation
"""
pointer = self.get_pointer()
direction = False
if self.__rotate_is_clicked(pointer) == True:
event.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
self.__rotating = True
direction = self.__move_is_clicked(pointer)
if direction is not None and self.__moving is None:
event.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
self.__moving = direction
self.__move_in_direction(direction)
if self.__center_is_clicked(pointer) == True:
event.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
self.__centering = True
self.__move_position = (0, 0)
self.radialnet.set_translation(self.__move_position)
self.queue_draw()
return False
def button_release(self, widget, event):
"""
Drawing callback
@type widget: GtkWidget
@param widget: Gtk widget superclass
@type event: GtkEvent
@param event: Gtk event of widget
@rtype: boolean
@return: Indicator of the event propagation
"""
self.__moving = None # stop moving
self.__centering = False
self.__rotating = False # stop rotate
self.__move_factor = 1
event.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))
self.queue_draw()
return False
def motion_notify(self, widget, event):
"""
Drawing callback
@type widget: GtkWidget
@param widget: Gtk widget superclass
@type event: GtkEvent
@param event: Gtk event of widget
@rtype: boolean
@return: Indicator of the event propagation
"""
xc, yc = self.__center_of_widget
x, y = self.get_pointer()
status = not self.radialnet.is_in_animation()
status = status and not self.radialnet.is_empty()
if self.__rotating == True and status:
r, t = self.__rotate_node.get_coordinate()
t = math.degrees(math.atan2(yc - y, x - xc))
if t < 0:
t = 360 + t
self.radialnet.set_rotation(t)
self.__rotate_node.set_coordinate(r, t)
self.queue_draw()
return False
def expose(self, widget, event):
"""
Drawing callback
@type widget: GtkWidget
@param widget: Gtk widget superclass
@type event: GtkEvent
@param event: Gtk event of widget
@rtype: boolean
@return: Indicator of the event propagation
"""
self.set_size_request(120, 130)
self.context = widget.window.cairo_create()
self.__draw()
return False
def __draw_rotate_control(self):
"""
"""
xc, yc = self.__center_of_widget
r, t = self.__rotate_node.get_coordinate()
x, y = self.__rotate_node.to_cartesian()
# draw text
self.context.set_font_size(10)
self.context.move_to(xc - 49, yc - 48)
self.context.show_text("Navigation")
width = self.context.text_extents(str(int(t)))[2]
self.context.move_to(xc + 49 - width - 2, yc - 48)
self.context.show_text(str(round(t, 1)))
self.context.set_line_width(1)
self.context.stroke()
# draw arc
self.context.set_dash([1,2])
self.context.arc(xc, yc, 40, 0, 2 * math.pi)
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
# draw node
self.context.set_dash([1,0])
self.context.arc(xc + x, yc - y, self.__rotate_radius, 0, 2 * math.pi)
if self.__rotating == True:
self.context.set_source_rgb(0.0, 0.0, 0.0)
else:
self.context.set_source_rgb(1.0, 1.0, 1.0)
self.context.fill_preserve()
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
return False
def __draw_move_control(self):
"""
"""
xc, yc = self.__center_of_widget
pc = PolarCoordinate()
self.context.set_dash([1,1])
self.context.arc(xc, yc, 23, 0, 2 * math.pi)
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
for i in range(8):
pc.set_coordinate(23, 45 * i)
x, y = pc.to_cartesian()
self.context.set_dash([1,1])
self.context.move_to(xc, yc)
self.context.line_to(xc + x, yc - y)
self.context.stroke()
self.context.set_dash([1,0])
self.context.arc(xc + x, yc - y, self.__move_radius, 0, 2 * math.pi)
if i == self.__moving:
self.context.set_source_rgb(0.0, 0.0, 0.0)
else:
self.context.set_source_rgb(1.0, 1.0, 1.0)
self.context.fill_preserve()
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
self.context.arc(xc, yc, 6, 0, 2 * math.pi)
if self.__centering == True:
self.context.set_source_rgb(0.0, 0.0, 0.0)
else:
self.context.set_source_rgb(1.0, 1.0, 1.0)
self.context.fill_preserve()
self.context.set_source_rgb(0.0, 0.0, 0.0)
self.context.set_line_width(1)
self.context.stroke()
return False
def __draw(self):
"""
Drawing method
"""
# Getting allocation reference
allocation = self.get_allocation()
self.__center_of_widget = (allocation.width / 2,
allocation.height / 2)
self.__draw_rotate_control()
self.__draw_move_control()
return False
def __move_in_direction(self, direction):
"""
"""
if self.__moving is not None:
bx, by = self.__move_position
ax, ay = self.__move_addition[direction]
self.__move_position = (bx + self.__move_factor * ax,
by + self.__move_factor * ay)
self.radialnet.set_translation(self.__move_position)
if self.__move_factor < self.__move_factor_limit:
self.__move_factor += 1
gobject.timeout_add(self.__move_pass,
self.__move_in_direction,
direction)
return False
def __rotate_is_clicked(self, pointer):
"""
"""
xn, yn = self.__rotate_node.to_cartesian()
xc, yc = self.__center_of_widget
center = (xc + xn, yc - yn)
result = RadialNet.is_in_circle(pointer, self.__rotate_radius, center)
if result == True:
return True
return False
def __center_is_clicked(self, pointer):
"""
"""
result = RadialNet.is_in_circle(pointer,
self.__move_radius,
self.__center_of_widget)
if result == True:
return True
return False
def __move_is_clicked(self, pointer):
"""
"""
xc, yc = self.__center_of_widget
pc = PolarCoordinate()
for i in range(8):
pc.set_coordinate(23, 45 * i)
x, y = pc.to_cartesian()
center = (xc + x, yc - y)
result = RadialNet.is_in_circle(pointer,
self.__move_radius,
center)
if result == True:
return i
return None