/usr/share/pyshared/tegakigtk/osd.py is in python-tegaki-gtk 0.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""
On Screen Display (OSD) for Tegaki
"""
import gtk
import gobject
from tegaki.character import Writing
from tegakigtk.fakekey import send_unicode
from tegaki.recognizer import Recognizer
class Window():
def __init__(self, color='red', line_width=5):
"""
:param color: The foreground color we want to use. can be named
('black', 'red', etc.) or hex ('#ff0000', '#abcdef')
:param line_width: The width of a line
"""
# create the window (without decorations and display in the taskbar
#through override_redirect)
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
# get screen
self.screen = self.window.get_screen()
# get size
self.size = (self.screen.get_width(), self.screen.get_height())
# get the colormap and the fg color
self.colormap = self.screen.get_rgb_colormap()
self.color = self.colormap.alloc_color(color)
self.c_black = self.colormap.alloc_color('black')
self.c_white = self.colormap.alloc_color('white')
self.window.set_default_size(self.size[0], self.size[1])
self.window.set_decorated(False)
self.window.set_colormap(self.colormap)
self.window.show()
self.window.window.set_override_redirect(True)
# create the pixmap
self.pixmap = gtk.gdk.Pixmap(self.window.window, self.size[0],
self.size[1])
self.pixmap.set_colormap(self.colormap)
self.pixmap.gc = self.pixmap.new_gc(foreground=self.color,
line_width=line_width)
self.pixmap.gc.set_colormap(self.colormap)
# create the mask
self.mask = gtk.gdk.Pixmap(None, self.size[0], self.size[1], 1)
self.mask.gc = self.mask.new_gc(foreground=self.c_white,
line_width=line_width)
# reset everything
self.clear()
self.window.stick()
# set `old_pos`
self.old_pos = None
def destroy(self):
""" destroy the window """
self.window.destroy()
def move_to(self, x, y):
self.old_pos = (x, y)
self.writing.move_to(x,y)
def line_to(self, x, y):
""" paint a new station in the gesture's path """
if self.old_pos:
self.draw_line(self.old_pos[0], self.old_pos[1], x, y)
self.writing.line_to(x,y)
self.old_pos = (x, y)
def clear(self):
""" clear + remove all """
self.writing = Writing()
self.writing.set_size(*self.size)
self.window.hide()
self.reset_mask()
self.reset_pixmap()
self.update_mask(False)
self.update_pixmap()
self.window.hide()
self.old_pos = None
def draw_line(self, x1, y1, x2, y2):
""" wrapper for a line """
# draw on pixmap
self.pixmap.draw_line(self.pixmap.gc, x1, y1, x2, y2)
# draw on mask
self.mask.draw_line(self.mask.gc, x1, y1, x2, y2)
# update all
self.update_mask()
self.update_pixmap()
def destroy(self):
""" destroy the window """
self.window.destroy()
def reset_mask(self):
""" reset the shape mask to fully transparent """
# fill black
self.mask.gc.set_foreground(self.c_black) #todo?
self.mask.draw_rectangle(self.mask.gc, True, 0, 0, self.size[0],
self.size[1])
self.mask.gc.set_foreground(self.c_white)
def reset_pixmap(self):
""" reset the pixmap to fully black """
# fill black
self.pixmap.gc.set_foreground(self.c_black) #todo?
self.pixmap.draw_rectangle(self.pixmap.gc, True, 0, 0, self.size[0],
self.size[1])
self.pixmap.gc.set_foreground(self.color)
def update_mask(self, do_show=True):
""" update the mask """
self.window.window.input_shape_combine_mask(self.mask, 0, 0) # vllt nach
#.show()?
self.window.window.shape_combine_mask(self.mask, 0, 0) # vllt nach
#.show()?
if do_show:
self.window.show()
def update_pixmap(self):
""" update the pixmap """
self.window.window.begin_paint_rect((0, 0, self.size[0], self.size[1]))
self.window.window.set_back_pixmap(self.pixmap, False)
self.window.window.end_paint()
def get_writing(self):
return self.writing.copy()
class Listener:
def __init__(self, recognizer):
self.root_window = gtk.gdk.get_default_root_window()
#self.create_osd_window()
self.running = False
self._window = Window()
self._drawing = False
self._new_stroke = True
self._recognizer = recognizer
def stop(self):
self.running = False
def start(self):
self.running = True
gobject.timeout_add(100, self._listen)
def _listen(self):
x, y, state = self.root_window.get_pointer()
ctrl = gtk.gdk.CONTROL_MASK
ctrl_left = gtk.gdk.CONTROL_MASK|gtk.gdk.BUTTON1_MASK
if state & ctrl_left == ctrl_left:
if self._new_stroke:
self._window.move_to(x,y)
else:
self._window.line_to(x,y)
self._new_stroke = False
self._drawing = True
elif state & ctrl == ctrl:
self._new_stroke = True
else:
if self._drawing:
print "drawing done"
writing = self._window.get_writing()
print writing
writing.normalize()
writing.upsample_threshold(10)
# should not be necessary but...
writing.resize(1000.0/writing.get_width(),
1000.0/writing.get_height())
writing.set_size(1000, 1000)
res = recognizer.recognize(writing)
best = res[0][0]
self._window.clear()
send_unicode(unicode(best, "utf8"))
clipboard = gtk.Clipboard()
clipboard.set_text(best)
#win = gtk.Window()
#from tegakigtk.canvas import Canvas
#canvas = Canvas()
#canvas.set_writing(writing)
#win.add(canvas)
#win.show_all()
self._drawing = None
return self.running
if __name__ == "__main__":
import sys
#win = Window()
##win.show_all()
#gtk.main()
recognizer = sys.argv[1] # name of recognizer
model = sys.argv[2] # name of model file
recognizers = Recognizer.get_available_recognizers()
print "Available recognizers", recognizers.keys()
if not recognizer in recognizers:
raise Exception, "Not an available recognizer"
recognizer_klass = recognizers[recognizer]
recognizer = recognizer_klass()
models = recognizer_klass.get_available_models()
print "Available models", models.keys()
if not model in models:
raise Exception, "Not an available model"
recognizer.set_model(model)
listener = Listener(recognizer)
listener.start()
gtk.main()
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