def cairo_draw(canvas, cr):
# Rather than using GTimeDate (which I couldn't find), we'll use Python time.
t = time.localtime()
s = t.tm_sec * math.pi / 30.0
m = t.tm_min * math.pi / 30.0
h = t.tm_hour * math.pi / 6.0
# Clear the texture contents, so that our drawing doesn't "stack."
# If you don't call this, you'll notice lots of aliasing artifacts.
canvas.clear()
# Scale the modelview to the size of the surface.
cr.scale(*canvas.get_surface_size())
cr.set_line_cap(cairo.LINE_CAP_ROUND)
cr.set_line_width(0.1)
# The black rail that holds the seconds indicator.
cr.set_source_rgb(0.0, 0.0, 0.0)
cr.translate(0.5, 0.5)
cr.arc(0.0, 0.0, 0.4, 0.0, math.pi * 2.0)
cr.stroke()
# The seconds indicator.
cr.set_source_rgb(1.0, 1.0, 1.0)
cr.move_to(0.0, 0.0)
cr.arc(math.sin(s) * 0.4, -math.cos(s) * 0.4, 0.05, 0.0, math.pi * 2)
cr.fill()
# The minutes hand. Here we want to assign a Clutter-based color to a
# cairo context, so we need to use Clutter wrappers.
Clutter.cairo_set_source_color(
cr,
Clutter.Color.get_static(Clutter.StaticColor.CHAMELEON_DARK)
)
cr.move_to(0.0, 0.0)
cr.line_to(math.sin(m) * 0.4, -math.cos(m) * 0.4)
cr.stroke()
# The hours hand.
cr.move_to(0.0, 0.0)
cr.line_to(math.sin(h) * 0.2, -math.cos(h) * 0.2)
cr.stroke()
return True
def cairo_draw(canvas, cr):
# Rather than using GTimeDate (which I couldn't find), we'll use Python time.
t = time.localtime()
s = t.tm_sec * math.pi / 30.0
m = t.tm_min * math.pi / 30.0
h = t.tm_hour * math.pi / 6.0
# Clear the texture contents, so that our drawing doesn't "stack."
# If you don't call this, you'll notice lots of aliasing artifacts.
canvas.clear()
# Scale the modelview to the size of the surface.
cr.scale(*canvas.get_surface_size())
cr.set_line_cap(cairo.LINE_CAP_ROUND)
cr.set_line_width(0.1)
# The black rail that holds the seconds indicator.
cr.set_source_rgb(0.0, 0.0, 0.0)
cr.translate(0.5, 0.5)
cr.arc(0.0, 0.0, 0.4, 0.0, math.pi * 2.0)
cr.stroke()
# The seconds indicator.
cr.set_source_rgb(1.0, 1.0, 1.0)
cr.move_to(0.0, 0.0)
cr.arc(math.sin(s) * 0.4, -math.cos(s) * 0.4, 0.05, 0.0, math.pi * 2)
cr.fill()
# The minutes hand. Here we want to assign a Clutter-based color to a
# cairo context, so we need to use Clutter wrappers.
Clutter.cairo_set_source_color(
cr, Clutter.Color.get_static(Clutter.StaticColor.CHAMELEON_DARK))
cr.move_to(0.0, 0.0)
cr.line_to(math.sin(m) * 0.4, -math.cos(m) * 0.4)
cr.stroke()
# The hours hand.
cr.move_to(0.0, 0.0)
cr.line_to(math.sin(h) * 0.2, -math.cos(h) * 0.2)
cr.stroke()
return True
def draw_clock(canvas, cr, width, height):
# Clear the canvas
cr.save()
cr.set_operator(cairo.OPERATOR_CLEAR)
cr.paint()
cr.restore()
# Get the current time, and compute the angles
now = GLib.DateTime.new_now_local()
seconds = now.get_second() * math.pi / 30
minutes = now.get_minute() * math.pi / 30
hours = now.get_hour() * math.pi / 6
# Normalize the coordinate space
cr.scale(width, height)
cr.set_line_cap(cairo.LINE_CAP_ROUND)
cr.set_line_width(0.1)
# The black rail that holds the seconds indicator
color = Clutter.Color.get_static(Clutter.StaticColor.BLACK)
Clutter.cairo_set_source_color(cr, color)
cr.translate(0.5, 0.5)
cr.arc(0, 0, 0.4, 0, math.pi * 2)
cr.stroke()
# The seconds indicator
color = Clutter.Color.get_static(Clutter.StaticColor.WHITE)
color.alpha = 196
Clutter.cairo_set_source_color(cr, color)
cr.move_to(0, 0)
cr.arc(math.sin(seconds) * 0.4, - math.cos(seconds) * 0.4, 0.05, 0, math.pi * 2)
cr.fill()
# The minutes hand
color = Clutter.Color.get_static(Clutter.StaticColor.CHAMELEON_DARK)
color.alpha = 196
Clutter.cairo_set_source_color(cr, color)
cr.move_to(0, 0)
cr.line_to(math.sin(minutes) * 0.4, - math.cos(minutes) * 0.4)
cr.stroke()
# The hours hand
cr.move_to(0, 0)
cr.line_to(math.sin(hours) * 0.2, - math.cos(hours) * 0.2)
cr.stroke()
return True
def draw_clock(canvas, cr, width, height):
# Clear the canvas
cr.save()
cr.set_operator(cairo.OPERATOR_CLEAR)
cr.paint()
cr.restore()
# Get the current time, and compute the angles
now = GLib.DateTime.new_now_local()
seconds = now.get_second() * math.pi / 30
minutes = now.get_minute() * math.pi / 30
hours = now.get_hour() * math.pi / 6
# Normalize the coordinate space
cr.scale(width, height)
cr.set_line_cap(cairo.LINE_CAP_ROUND)
cr.set_line_width(0.1)
# The black rail that holds the seconds indicator
color = Clutter.Color.get_static(Clutter.StaticColor.BLACK)
Clutter.cairo_set_source_color(cr, color)
cr.translate(0.5, 0.5)
cr.arc(0, 0, 0.4, 0, math.pi * 2)
cr.stroke()
# The seconds indicator
color = Clutter.Color.get_static(Clutter.StaticColor.WHITE)
color.alpha = 196
Clutter.cairo_set_source_color(cr, color)
cr.move_to(0, 0)
cr.arc(math.sin(seconds) * 0.4, -math.cos(seconds) * 0.4, 0.05, 0, math.pi * 2)
cr.fill()
# The minutes hand
color = Clutter.Color.get_static(Clutter.StaticColor.CHAMELEON_DARK)
color.alpha = 196
Clutter.cairo_set_source_color(cr, color)
cr.move_to(0, 0)
cr.line_to(math.sin(minutes) * 0.4, -math.cos(minutes) * 0.4)
cr.stroke()
# The hours hand
cr.move_to(0, 0)
cr.line_to(math.sin(hours) * 0.2, -math.cos(hours) * 0.2)
cr.stroke()
return True
def draw_clock(self, canvas, cr, width, height):
now = GLib.DateTime.new_now_local()
seconds = GLib.DateTime.get_second(now) * pi / 30
minutes = GLib.DateTime.get_minute(now) * pi / 30
hours = GLib.DateTime.get_hour(now) * pi / 6
cr.save()
# clear the contents of the canvas, to avoid painting
# over the previous frame
cr.set_operator(cairo.OPERATOR_CLEAR)
cr.paint()
cr.restore()
cr.set_operator(cairo.OPERATOR_OVER)
# scale the modelview to the size of the surface
cr.scale(width, height)
cr.set_line_cap(cairo.LINE_CAP_ROUND)
cr.set_line_width(0.1)
# the black rail that holds the seconds indicator
Clutter.cairo_set_source_color(cr, self.colors['white'])
cr.translate(0.5, 0.5)
cr.arc(0, 0, 0.4, 0, pi * 2)
cr.stroke()
# the seconds indicator
Clutter.cairo_set_source_color(cr, self.colors['black'])
cr.move_to(0, 0)
cr.arc(sin(seconds) * 0.4, -cos(seconds) * 0.4, 0.05, 0, pi * 2)
cr.fill()
# the minutes hand
Clutter.cairo_set_source_color(cr, self.colors['hand'])
cr.move_to(0, 0)
cr.line_to(sin(minutes) * 0.4, -cos(minutes) * 0.4)
cr.stroke()
# the hours hand
cr.move_to(0, 0)
cr.line_to(sin(hours) * 0.2, -cos(hours) * 0.2)
cr.stroke()
# we're done drawing
return True
def draw_clock (self, canvas, cr, width, height):
now = GLib.DateTime.new_now_local ()
seconds = GLib.DateTime.get_second (now) * pi / 30
minutes = GLib.DateTime.get_minute (now) * pi / 30
hours = GLib.DateTime.get_hour (now) * pi / 6
cr.save ()
# clear the contents of the canvas, to avoid painting
# over the previous frame
cr.set_operator (cairo.OPERATOR_CLEAR)
cr.paint ()
cr.restore ()
cr.set_operator (cairo.OPERATOR_OVER)
# scale the modelview to the size of the surface
cr.scale (width, height)
cr.set_line_cap (cairo.LINE_CAP_ROUND)
cr.set_line_width (0.1)
# the black rail that holds the seconds indicator
Clutter.cairo_set_source_color (cr, self.colors['white'])
cr.translate (0.5, 0.5)
cr.arc (0, 0, 0.4, 0, pi * 2)
cr.stroke ()
# the seconds indicator
Clutter.cairo_set_source_color (cr, self.colors['black'])
cr.move_to (0, 0)
cr.arc (sin (seconds) * 0.4, - cos (seconds) * 0.4, 0.05, 0, pi * 2)
cr.fill ()
# the minutes hand
Clutter.cairo_set_source_color (cr, self.colors['hand'])
cr.move_to (0, 0)
cr.line_to (sin (minutes) * 0.4, -cos (minutes) * 0.4)
cr.stroke ()
# the hours hand
cr.move_to (0, 0)
cr.line_to (sin (hours) * 0.2, -cos (hours) * 0.2)
cr.stroke ()
# we're done drawing
return True
