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# Speak.activity
# A simple front end to the espeak text-to-speech engine on the XO laptop
# http://wiki.laptop.org/go/Speak
#
# Copyright (C) 2008 Joshua Minor
# This file is part of Speak.activity
#
# Parts of Speak.activity are based on code from Measure.activity
# Copyright (C) 2007 Arjun Sarwal - arjun@laptop.org
#
# Speak.activity is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Speak.activity is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Speak.activity. If not, see <http://www.gnu.org/licenses/>.
import gi
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GObject
import math
class Eye(Gtk.DrawingArea):
"""Eye."""
def __init__(self, fill_color):
Gtk.DrawingArea.__init__(self)
self.x, self.y = 0, 0
self.fill_color = fill_color
self.show_all()
def look_at(self, x, y):
""" Look. . ."""
self.x = x
self.y = y
self.queue_draw()
def look_ahead(self):
""" Look. . ."""
self.x = None
self.y = None
self.queue_draw()
# Thanks to xeyes :)
def computePupil(self):
"""pupil."""
rect = self.get_allocation()
if self.x is None or self.y is None:
# look ahead, but not *directly* in the middle
if rect.x + rect.width / 2 < rect.width / 2:
cx = rect.width * 0.6
else:
cx = rect.width * 0.4
return cx, rect.height * 0.6
EYE_X, EYE_Y = self.translate_coordinates(
self.get_toplevel(), rect.width / 2, rect.height / 2)
EYE_HWIDTH = rect.width
EYE_HHEIGHT = rect.height
BALL_DIST = EYE_HWIDTH / 4
dx = self.x - EYE_X
dy = self.y - EYE_Y
if dx or dy:
angle = math.atan2(dy, dx)
cosa = math.cos(angle)
sina = math.sin(angle)
h = math.hypot(EYE_HHEIGHT * cosa, EYE_HWIDTH * sina)
x = (EYE_HWIDTH * EYE_HHEIGHT) * cosa / h
y = (EYE_HWIDTH * EYE_HHEIGHT) * sina / h
dist = BALL_DIST * math.hypot(x, y)
if dist < math.hypot(dx, dy):
dx = dist * cosa
dy = dist * sina
return rect.width / 2 + dx, rect.height / 2 + dy
def do_draw(self, context):
rect = self.get_allocation()
eyeSize = min(rect.width, rect.height)
outlineWidth = eyeSize / 20.0
pupilSize = eyeSize / 10.0
pupilX, pupilY = self.computePupil()
dX = pupilX - rect.width / 2.
dY = pupilY - rect.height / 2.
distance = math.sqrt(dX * dX + dY * dY)
limit = eyeSize / 2 - outlineWidth * 2 - pupilSize
if distance > limit:
pupilX = rect.width / 2 + dX * limit / distance
pupilY = rect.height / 2 + dY * limit / distance
context.set_source_rgba(*self.fill_color.get_rgba())
context.rectangle(0, 0, rect.width, rect.height)
context.fill()
# eye ball
context.set_source_rgb(1, 1, 1)
context.arc(rect.width / 2,
rect.height / 2,
eyeSize / 2 - outlineWidth / 2,
0, 360)
context.fill()
# outline
context.set_source_rgb(0, 0, 0)
context.set_line_width(outlineWidth)
context.arc(rect.width / 2,
rect.height / 2,
eyeSize / 2 - outlineWidth / 2,
0, 360)
context.stroke()
# pupil
context.set_source_rgb(0, 0, 0)
context.arc(pupilX, pupilY, pupilSize, 0, 360)
context.fill()
return True
class Glasses(Eye):
def __init__(self, fill_color):
Eye.__init__(self, fill_color)
self.show_all()
self.connect('draw', self.draw_glass)
def draw_glass(self, widget, context):
rect = widget.get_allocation()
eyeSize = min(rect.width, rect.height)
outlineWidth = eyeSize / 20.0
pupilSize = eyeSize / 10.0
pupilX, pupilY = self.computePupil()
dX = pupilX - rect.width / 2.
dY = pupilY - rect.height / 2.
distance = math.sqrt(dX * dX + dY * dY)
limit = eyeSize / 2 - outlineWidth * 2 - pupilSize
if distance > limit:
pupilX = rect.width / 2 + dX * limit / distance
pupilY = rect.height / 2 + dY * limit / distance
# background
context.set_source_rgba(*self.fill_color.get_rgba())
context.paint()
def roundrect(x1, y1, x2, y2):
context.move_to(x1, (y1 + y2) / 2.)
context.curve_to(x1, y1, x1, y1, (x1 + x2) / 2., y1)
context.curve_to(x2, y1, x2, y1, x2, (y1 + y2) / 2.)
context.curve_to(x2, y2, x2, y2, (x1 + x2) / 2., y2)
context.curve_to(x1, y2, x1, y2, x1, (y1 + y2) / 2.)
# eye ball
context.set_source_rgb(1, 1, 1)
roundrect(outlineWidth,
outlineWidth,
rect.width - outlineWidth,
rect.height - outlineWidth)
context.fill()
# outline
context.set_source_rgb(0, 0, 0)
context.set_line_width(outlineWidth)
roundrect(outlineWidth,
outlineWidth,
rect.width - outlineWidth,
rect.height - outlineWidth)
#roundrect(0,0, rect.width,rect.height)
context.stroke()
# pupil
context.arc(pupilX, pupilY, pupilSize, 0, 360)
context.set_source_rgb(0, 0, 0)
context.fill()
return True
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