def create_balls(self):
self.balls = Balls(10,[3,3],300, 300, self.background_color)
self.ball_canvas = Surface((self.get_width(),self.get_height()))
self.ball_canvas.set_colorkey(self.background_color)
class Canvas(Surface):
"""
Delegates responsibility for drawing to subsurfaces, except
for surfaces for mouse info and the temporary measuring line.
"""
def __init__(self, boundary_width = 630, boundary_height = 470, colorkey = Colour.WHITE):
super(Canvas, self).__init__((boundary_width, boundary_height))
# Canvas color
self.background_color = colorkey
# Colorkey is the background color
self.fill(self.background_color)
# Canvas for temporary lines
self.work_canvas = Surface((boundary_width, boundary_height))
self.work_canvas.set_colorkey(self.background_color)
# Canvas for drawn lines
self.line_canvas = Surface((boundary_width, boundary_height))
self.line_canvas.fill(self.background_color)
self.line_canvas.set_colorkey(self.background_color)
# List of lines
self.lines = Lines(Colour.BLUE, Colour.WHITE, self.line_canvas)
# Mouse info text position on Canvas
self.mouse_info_x = 0
self.mouse_info_y = 0
self.mouse_info_canvas = Surface ((200,100))
self.mouse_info_canvas.set_colorkey(self.background_color)
# Fill the auxilliary canvases so that they become transparent
self.work_canvas.fill(self.background_color)
self.mouse_info_canvas.fill(self.background_color)
# Create empty Ball Canvas
self.ball_canvas = None
def set_global_position(self, x, y):
'''
The Canvas position in the containing Window
'''
self.global_x = x
self.global_y = y
def create_balls(self):
self.balls = Balls(10,[3,3],300, 300, self.background_color)
self.ball_canvas = Surface((self.get_width(),self.get_height()))
self.ball_canvas.set_colorkey(self.background_color)
def draw_measuring_line(self,start,end):
# Erase old measuring line
self.work_canvas.fill(self.background_color)
# Draw new measuring line
pygame.draw.line(self.work_canvas, Colour.GOLFGREEN, start, end)
# self.work_canvas.fill(self.color)
def draw_line(self,x0,y0,x1,y1):
# Draw an actual, permanent line and erase measuring line
self.work_canvas.fill(self.background_color)
# self.mouse_info_canvas.fill(self .color)
self.lines.draw_line(x0, y0, x1, y1)
def draw_mouse_info(self, message, drawing=False):
# Empty mouse canvas
self.mouse_info_canvas.fill(self.background_color)
# Create font and blit onto canvas
font = Font(None, 22)
mouse_info = font.render(message, 1, Colour.CHOCOLATE, Colour.BLACK)
self.mouse_info_canvas.blit(mouse_info, (self.mouse_info_x, self.mouse_info_y))
# If Mouse is dragging, notify
if drawing:
ti = Font(None, 30).render("DRAWING",1,Colour.CHOCOLATE, Colour.BLACK)
self.mouse_info_canvas.blit(ti, (self.mouse_info_x, self.mouse_info_y+20))
def draw_balls(self):
self.ball_canvas.fill(self.background_color)
# Do all kinds of checkings
self.balls.detect_collisions(self.lines,
self.get_width(),self.get_height())
self.balls.move_balls()
self.balls.blit_balls(self.ball_canvas)
def move_lines(self, direction):
if direction == K_RIGHT:
(x, y) = (10, 0)
print "moving lines to the right with vector (%s,%s)"%(x,y)
elif direction == K_LEFT:
(x, y) = (-10, 0)
print "moving lines to the left with vector (%s,%s)"%(x,y)
elif direction == K_UP:
(x, y) = (0, -10)
print "moving lines up with vector (%s,%s)"%(x,y)
elif direction == K_DOWN:
(x, y) = (0, 10)
print "moving lines down with vector (%s,%s)"%(x,y)
self.line_canvas.fill(self.background_color)
for line in self.lines:
line.move((x, y))
#
def update_content(self):
# Redraw the lines
self.lines.redraw()
if self.ball_canvas is not None:
self.blit(self.ball_canvas, (0,0))
def draw_content(self):
self.fill(self.background_color)
self.update_content()
# Draw the stuff on the canvas
self.blit(self.work_canvas,(0,0))
self.blit(self.mouse_info_canvas,(self.get_width()-240,self.get_height()-80))
self.blit(self.line_canvas,(0,0))