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pyPenNotes - Initial import

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git-svn-id: http://www.neo1973-germany.de/svn@32 46df4e5c-bc4e-4628-a0fc-830ba316316d
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kriss 2008-03-13 15:55:28 +00:00
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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"""
* notesList.py - pyPenNotes - sort notes by correlation
*
* (C) 2007 by Kristian Mueller <kristian-m@kristian-m.de>
* All Rights Reserved
*
* some idea from Toby Segaran's Collective Intelligence (O'Reilly 2007)
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
# get list of counted values
# corr_types can be:
# number - number of lines
# sub_number - number of lines in strokes
def count_values(notes, corr_type):
corr_list = []
# use number of strokes
if corr_type == "number":
for note in notes:
corr_list.append(len(note.image_list))
# use number of strokes
if corr_type == "sub_number":
for note in notes:
count = 0
for i in note.image_list:
count += (len(i[2]))
corr_list.append(count)
# use line lenght
if corr_type == "len":
# get list of strokes by distance from start to end
for note in notes:
count = 0
#for stroke in note.image_list:
# count += abs(stroke)
corr_list.append(count)
max_value = max(corr_list)
min_value = min(corr_list)
# print "==================================================================="
count = 1
for i in corr_list:
#print "%s Elements: %s - Value %s" %(
# count, i, (min_value - i * (1.0 / max_value)))
count += 1
i = (min_value - i * (1.0 / max_value))
return corr_list
# get Pearson correlation coefficiant for note1 and note2
def pearson_correlation(notes, note1, note2, corr_type1, corr_type2):
vals1 = count_values(notes, corr_type1)
vals2 = count_values(notes, corr_type2)
# print "Val1:1 = %s" % vals1[note1]
# print "Val1:2 = %s" % vals1[note2]
# print "Val2:1 = %s" % vals2[note1]
# print "Val2:2 = %s" % vals2[note2]
# print "Distance = %s and %s" %(abs(vals1[note1] - vals1[note2]), abs(vals2[note1] - vals2[note2]))
print "%s" %(
abs (abs(vals1[note1] - vals2[note1]) - abs(vals1[note2] - vals2[note2]))),
# print "2D Distance %s<-->%s = %s" %(
# note1, note2,
# abs (abs(vals1[note1] - vals2[note1]) - abs(vals1[note2] - vals2[note2])))

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#!/usr/bin/python
"""
* pyPenNotes.py - pyPenNotes - initialize GUI
*
* (C) 2007 by Kristian Mueller <kristian-m@kristian-m.de>
* All Rights Reserved
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
import gtk
import gobject ## for multithreading
import sys ## exit
import os ## file handling
import notesList
COLOR_LIST = ["#0000FF", "#FF0000", "#00FF00", "#FFFF00", "#FFFFFF", "#000000"]
DEFAULT_BG = 5 ## Black
DEFAULT_FG = 0 ## Blue
DEFAULT_SIZE = 4 ## Diameter 4 Pixel
DATA_FILE = "~/.penNotes.strokes_data"
## A note is defined by its strokes a background and the line thickness.
## Strokes of the same color and thickness are combined in a strokes_list.
## The order of strokes will stay the same.
class PenNote:
def __init__(self):
self.bg_color = DEFAULT_BG
self.last_fg_color = 0
self.last_line_thickness = DEFAULT_SIZE
self.last_stroke = (0, 0)
self.strokes_list = [] # current list of strokes from
# the same color or thickness
# strokes are tuples of src and dest
self.image_list = [] # list of (color, thickness, strokes_list)
self.image_list.append((self.last_fg_color, self.last_line_thickness,
self.strokes_list))
def add_stroke(self, src, dest, color, line_thickness):
if (color != self.last_fg_color) or \
(self.last_line_thickness != line_thickness) \
or self.last_stroke != src:
self.strokes_list = []
self.strokes_list.append((src[0], src[1]))
self.image_list.append((color, line_thickness, self.strokes_list))
self.last_fg_color = color
self.last_line_thickness = line_thickness
self.strokes_list.append((dest[0], dest[1]))
self.last_stroke = dest
def append_point_to_stroke(self, coord):
self.strokes_list.append(coord)
def append_new_point(self, coord, color, thickness):
self.strokes_list = []
self.strokes_list.append(coord)
self.image_list.append((color, thickness, self.strokes_list))
self.last_fg_color = color
self.last_line_thickness = thickness
def clear(self):
self.__init__()
class pyPenNotes:
## init the class
def __init__(self):
self.state = "pre-init"
self.current_note_number = 0
self.size_num = DEFAULT_SIZE
self.fg_color = DEFAULT_FG
self.bg_color = DEFAULT_BG
self.pen_notes = []
self.current_note = PenNote()
self.pen_notes.append(self.current_note)
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_default_size(480, 640)
self.window.set_title("pyPenNotes")
self.window.connect("destroy", lambda w: gtk.main_quit())
self.window.show()
self.more_options_visible = False
self.state = "init-done"
def update_ui(self):
if self.state == "init-done":
self.create_window()
self.state = "running"
return False ## okay, we're done
else:
return True ## please come back later
## create content of the main window
## asynchronous - so we can have a faster start up
def create_window(self):
vbox = gtk.VBox()
toolbar = gtk.Toolbar()
self.toolbar2 = gtk.Toolbar()
self.area = gtk.DrawingArea()
self.area.set_size_request(400, 300)
self.pangolayout = self.area.create_pango_layout("")
self.sw = gtk.ScrolledWindow()
self.sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
self.sw.add_with_viewport(self.area)
self.table = gtk.Table(2,2)
self.hruler = gtk.HRuler()
self.vruler = gtk.VRuler()
self.hruler.set_range(0, 400, 0, 400)
self.vruler.set_range(0, 300, 0, 300)
self.table.attach(self.hruler, 1, 2, 0, 1, yoptions=0)
self.table.attach(self.vruler, 0, 1, 1, 2, xoptions=0)
self.table.attach(self.sw, 1, 2, 1, 2)
size_evnt_box = gtk.EventBox()
self.size_number_entry = gtk.Label()
size_evnt_box.add(self.size_number_entry)
self.size_number_entry.set_text("%2.2dpx" % self.size_num)
self.size_number_entry.modify_fg(gtk.STATE_NORMAL, \
self.size_number_entry.get_colormap().alloc_color(COLOR_LIST[self.fg_color]))
self.size_number_entry.set_width_chars(4) # max: "99 px"
size_evnt_box.set_events(gtk.gdk.BUTTON_PRESS_MASK)
size_evnt_box.connect("button_press_event", self.fg_color_select)
note_evnt_box = gtk.EventBox()
self.note_number_entry = gtk.Label()
note_evnt_box.add(self.note_number_entry)
self.note_number_entry.set_text("%4.4d" % (self.current_note_number+1))
self.note_number_entry.modify_fg(gtk.STATE_NORMAL, \
self.size_number_entry.get_colormap().\
alloc_color(COLOR_LIST[self.bg_color]))
self.note_number_entry.set_width_chars(4)
note_evnt_box.set_events(gtk.gdk.BUTTON_PRESS_MASK)
note_evnt_box.connect("button_press_event", self.bg_color_select)
#######################################################################
## fill in toolbar items ##############################################
#######################################################################
## size <
toolbar.insert(self.create_toolbar_item("", "gtk-media-play-ltr", \
self.prev_size), 0)
## size ??px
size_item = gtk.ToolItem()
size_item.add(size_evnt_box)
toolbar.insert(size_item, 1)
## size >
toolbar.insert(self.create_toolbar_item("", "gtk-media-play-rtl", self.next_size), 2)
toolbar.insert(gtk.SeparatorToolItem(), 3)
## cls
more_item = self.create_toolbar_item("", "gtk-go-down", self.more_options, type="toggle")
more_item.set_expand(True)
toolbar.insert(more_item, 4)
toolbar.insert(gtk.SeparatorToolItem(), 5)
## note <
toolbar.insert(self.create_toolbar_item("", "gtk-media-play-ltr", self.prev_note), 6)
## note ????
note_item = gtk.ToolItem()
note_item.add(note_evnt_box)
toolbar.insert(note_item, 7)
## note >
toolbar.insert(self.create_toolbar_item("", "gtk-media-play-rtl", self.next_note), 8)
clear_item = self.create_toolbar_item("", "gtk-clear", self.clear_note)
clear_item.set_expand(True)
self.toolbar2.insert(clear_item, 0)
undo_item = self.create_toolbar_item("", "gtk-undo-ltr", self.undo)
undo_item.set_expand(True)
self.toolbar2.insert(undo_item, 1)
undo_item = self.create_toolbar_item("", "gtk-revert-to-saved-ltr", self.print_list_sub_number)
# undo_item = self.create_toolbar_item("", "gtk-revert-to-saved-ltr", self.load)
undo_item.set_expand(True)
self.toolbar2.insert(undo_item, 2)
undo_item = self.create_toolbar_item("", "gtk-revert-to-saved-ltr", self.print_list_number)
# undo_item = self.create_toolbar_item("", "gtk-revert-to-saved-ltr", self.load)
undo_item.set_expand(True)
self.toolbar2.insert(undo_item, 2)
undo_item = self.create_toolbar_item("", "gtk-save", self.save)
undo_item.set_expand(True)
self.toolbar2.insert(undo_item, 3)
quit_item = self.create_toolbar_item("", "gtk-quit", self.end_program)
quit_item.set_expand(True)
self.toolbar2.insert(quit_item, 4)
vbox.pack_start(toolbar, False, False, 0)
vbox.pack_start(self.toolbar2, False, False, 0)
vbox.add(self.table);
self.window.add(vbox)
self.area.set_events(gtk.gdk.POINTER_MOTION_MASK |
gtk.gdk.POINTER_MOTION_HINT_MASK )
self.area.connect("expose-event", self.area_expose_cb)
def motion_notify(ruler, event):
return ruler.emit("motion_notify_event", event)
def add_pixel(widget, event):
if self.clicked:
pos = widget.get_pointer()
# print "blub <%s/%s>" % (widget.get_pointer()[0], widget.get_pointer()[1])
backup_fb = self.gc.foreground
try:
self.gc.foreground = widget.window.get_colormap().alloc_color(COLOR_LIST[self.fg_color])
if self.last == (0, 0):
self.last = pos
self.gc.set_line_attributes(self.size_num, \
gtk.gdk.LINE_SOLID, gtk.gdk.CAP_ROUND, \
gtk.gdk.CAP_ROUND)
widget.window.draw_line(self.gc, self.last[0], \
self.last[1], pos[0], pos[1])
finally:
self.gc.foreground = backup_fb
self.current_note.add_stroke((self.last[0], self.last[1]),
(pos[0], pos[1]), self.fg_color, self.size_num)
self.last = pos
self.area.connect_object("motion_notify_event", motion_notify,
self.hruler)
self.area.connect_object("motion_notify_event", motion_notify,
self.vruler)
self.clicked = False
self.last = (0, 0)
def click(widget, event):
self.clicked = True
add_pixel(widget, event)
def unclick(widget, event):
self.last = (0, 0);
self.clicked = False
self.area.add_events(gtk.gdk.BUTTON_MOTION_MASK | \
gtk.gdk.BUTTON_PRESS_MASK | \
gtk.gdk.BUTTON_RELEASE_MASK)
self.area.connect("button-press-event", click)
self.area.connect("button-release-event", unclick)
self.area.connect("motion-notify-event", add_pixel)
self.hadj = self.sw.get_hadjustment()
self.vadj = self.sw.get_vadjustment()
def val_cb(adj, ruler, horiz):
if horiz:
span = self.sw.get_allocation()[3]
else:
span = self.sw.get_allocation()[2]
l,u,p,m = ruler.get_range()
v = adj.value
ruler.set_range(v, v+span, p, m)
while gtk.events_pending():
gtk.main_iteration()
self.hadj.connect('value-changed', val_cb, self.hruler, True)
self.vadj.connect('value-changed', val_cb, self.vruler, False)
def size_allocate_cb(wid, allocation):
x, y, w, h = allocation
l,u,p,m = self.hruler.get_range()
m = max(m, w)
self.hruler.set_range(l, l+w, p, m)
l,u,p,m = self.vruler.get_range()
m = max(m, h)
self.vruler.set_range(l, l+h, p, m)
self.sw.connect('size-allocate', size_allocate_cb)
self.window.show_all()
self.toolbar2.hide() ## Hide to make space on screen
## lets update the screen so our load can redraw to something
self.area_expose_cb(self.area, None)
self.load(None)
###########################################################################
## GTK stuff ##############################################################
###########################################################################
def delete_event(self, widget, event, data=None):
self.save(None)
gtk.main_quit()
return False
###########################################################################
## GUI Helper #########################################################
###########################################################################
def create_toolbar_item(self, text, icon, callback, type = "tool"):
btn_image = gtk.Image()
btn_image.set_from_icon_name(icon, gtk.ICON_SIZE_SMALL_TOOLBAR)
if type == "toggle":
btn = gtk.ToggleButton("V")
self.more_btn = btn
else:
btn = gtk.ToolButton(btn_image, text)
btn.connect("clicked", callback)
item = gtk.ToolItem()
item.add(btn)
return item
###########################################################################
## callbacks ###########################################################
###########################################################################
## debug correlation of notes list
def print_list_number(self, event):
for i in range(len(self.pen_notes)):
for j in range(len(self.pen_notes)):
print ""
notesList.pearson_correlation(self.pen_notes, i, j, "number", "sub_number")
#notesList.pearson_corr(self.pen_notes, 0, 1, "number")
## debug correlation of notes list
def print_list_sub_number(self, event):
notesList.pearson_correlation(self.pen_notes, 0, 1, "sub_number", "number")
#notesList.pearson_corr(self.pen_notes, 0, 1, "sub_number")
## change brush size--
def prev_size(self, event):
self.size_num /= 2
if self.size_num <= 0:
self.size_num = 1
self.size_number_entry.set_text("%2.2d px" % self.size_num)
## change brush size++
def next_size(self, event):
self.size_num *= 2
if self.size_num > 99:
self.size_num = 99
self.size_number_entry.set_text("%2.2d px" % self.size_num)
## prev note
def prev_note(self, event):
if self.current_note_number > 0:
self.current_note_number -= 1
self.note_number_entry.set_text("%4.4d" % (self.current_note_number+1))
self.current_note = self.pen_notes[self.current_note_number]
self.redraw()
## new or next note
def next_note(self, event):
self.current_note_number += 1
self.note_number_entry.set_text("%4.4d" % (self.current_note_number+1))
if len(self.pen_notes) <= self.current_note_number:
print "creating a new Note..."
self.current_note = PenNote()
self.current_note.bg_color = self.bg_color
self.pen_notes.append(self.current_note)
self.current_note = self.pen_notes[self.current_note_number]
self.redraw()
## show more options (a second toolbar)
def more_options(self, event):
self.more_btn.toggled()
if self.more_options_visible:
self.toolbar2.hide()
self.more_options_visible = False
else:
self.toolbar2.show()
self.more_options_visible = True
def undo(self, event):
if len(self.current_note.image_list) >= 1:
self.current_note.image_list.pop()
self.redraw()
def end_program(self, event):
self.save(None)
sys.exit()
###########################################################################
## save and restore - as kind-of-CSV-file #################################
###########################################################################
## load from file - format is:
## fg, bg, thickness; x,y x,y x,y
## every line not containing at last two ',' declare a new note
def load(self, event):
## throw away the old stuff :-(
self.pen_notes = []
count = 0
data_file_name = os.path.expanduser(DATA_FILE)
if not os.path.exists(data_file_name):
print "No notebook file found - using an empty one."
return
file_fd = open(data_file_name, 'r')
try:
for line in file_fd.read().split('\n'):
comma_values = line.split(",")
if len(comma_values) >= 2: ## at least 1 coord
fg_color = int(comma_values[0])
bg_color = int(comma_values[1])
self.current_note.bg_color = bg_color
thickness = int(comma_values[2].split(";")[0])
if len(line.split(";")[1].rstrip()) <= 0:
continue
new_stroke = True
for coord in line.split("; ")[1].split(" "):
coords = coord.split(",")
if len(coords) <= 1:
continue
## first point
if new_stroke:
self.current_note.append_new_point((int(coords[0]), \
int(coords[1])), fg_color, thickness)
# self.current_note.strokes_list.append(int(coords[0]), \
# int(coords[1])))
self.current_note.append_point_to_stroke((int(coords[0]), \
int(coords[1])))
new_stroke = False
else:
if len(line) >= 1:
count += 1
self.current_note = PenNote()
self.pen_notes.append(self.current_note)
finally:
file_fd.close()
print "count: %s, current: %s" %(count, self.current_note_number)
if count <= self.current_note_number:
print "Sorry there is no note %4.4d left bringing you to note 0001"
self.current_note_number = 0
self.next_note(None)
self.prev_note(None)
self.current_note = self.pen_notes[self.current_note_number]
self.redraw()
## save to file - format is:
## fg, bg, thickness; x,y x,y x,y
def save(self, event):
file_fd = open(os.path.expanduser(DATA_FILE), 'w')
count = 0
for note in self.pen_notes:
bg_color = note.bg_color
count += 1
file_fd.write("Note %4.4d\n" %count)
for piece in note.image_list:
fg_color = piece[0]
thickness = piece[1]
line = "%d, %d, %d; " %(fg_color, bg_color, thickness)
if len(piece[2]) >= 1:
for coord in piece[2]:
line += "%d,%d " % coord
file_fd.write("%s\n" %line)
###########################################################################
## operation doing actual drawing to the screen ###########################
###########################################################################
## increment foreground color - select new pen color
def fg_color_select(self, event, blub):
self.fg_color += 1
if self.fg_color >= len(COLOR_LIST):
self.fg_color = 0 ## cycle around
self.size_number_entry.modify_fg(gtk.STATE_NORMAL, \
self.size_number_entry.get_colormap().\
alloc_color(COLOR_LIST[self.fg_color]))
## increment background color and redraw screen using the new one
def bg_color_select(self, event, blub):
self.bg_color += 1
if self.bg_color >= len(COLOR_LIST):
self.bg_color = 0 ## cycle around
## show color as fontcolor for note number
self.note_number_entry.modify_fg(gtk.STATE_NORMAL, \
self.size_number_entry.get_colormap().\
alloc_color(COLOR_LIST[self.bg_color]))
self.current_note.bg_color = self.bg_color
self.redraw()
## overdraw the screen using background color
def clear_draw_screen(self, event):
fg_backup = self.gc.foreground
self.gc.foreground = self.area.window.get_colormap()\
.alloc_color(COLOR_LIST[self.current_note.bg_color])
self.area.window.draw_rectangle(self.gc, True, 0, 0, -1, -1)
self.gc.foreground = fg_backup
## trow away the content of the note
def clear_note(self, event):
self.current_note.clear()
self.current_note.bg_color = self.bg_color
self.redraw()
## redraw screen using the notes content
def redraw(self):
## step 1 - clear screen <-- will cause a flicker!
bg = self.current_note.bg_color
self.clear_draw_screen(None)
fg_backup = self.gc.foreground
self.gc.foreground = self.area.window.get_colormap().\
alloc_color(COLOR_LIST[bg])
self.gc.foreground = fg_backup
## step 2 - paint all pieces of the same color
for piece in self.current_note.image_list:
color = piece[0]
line_thickness = piece[1]
## step 3 - draw all lines of one color
if len(piece[2]) >= 1:
fg_backup = self.gc.foreground
self.gc.foreground = self.area.window.get_colormap().\
alloc_color(COLOR_LIST[color])
self.gc.set_line_attributes(line_thickness, \
gtk.gdk.LINE_SOLID, gtk.gdk.CAP_ROUND, \
gtk.gdk.CAP_ROUND)
self.area.window.draw_lines(self.gc, piece[2])
self.gc.foreground = fg_backup
## is called when ever a redraw is needed
def area_expose_cb(self, area, event):
self.style = self.area.get_style()
self.gc = self.style.fg_gc[gtk.STATE_NORMAL]
self.redraw()
#self.gc.set_background(gtk.gdk.color_parse("#000000"))
#self.gc.set_foreground(gtk.gdk.color_parse("#FFFFFF"))
return True
def main():
gobject.timeout_add(500, pyPenNotes.update_ui, py_pen_notes) # every 1/2 second
try:
if gtk.gtk_version[0] == 2:
gtk.gdk.threads_init()
except:
pass
gtk.gdk.threads_enter()
gtk.main()
gtk.gdk.threads_leave()
return 0
if __name__ == "__main__":
py_pen_notes = pyPenNotes()
main()

14
pyPenNotes/trunk/src/setup.cfg Normal file
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# This config file installs pyPenNotes in /usr
# Replace /usr by /usr/local if you prefer
[install]
install-scripts = /usr/bin
install-data = /usr/share
[install_lib]
compile = 1
optimize = 1
[sdist]
force-manifest = 1
formats = bztar

34
pyPenNotes/trunk/src/setup.py Executable file
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#!/usr/bin/python
"""
* setup.py - script to install SettingGUI
* (C) 2007 by Kristian Mueller <kristian-m@kristian-m.de>
* All Rights Reserved
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
from distutils.core import setup
import os
setup(name='pyPenNotes',
description='write Notes on touch screens',
long_description='Tool to write notes using the touch screen on FIC Neo1973 (OpenMoko Distribution)',
author='Kristian Mueller',
author_email='kristian-m@kristian-m.de',
url='http://wiki.openmoko.org/wiki/PyPenNotes',
version='0.3b',
license='GPL_v2',
scripts=['pyPenNotes.py'],
)

72
pyPenNotes/trunk/src/write_panel.py Normal file
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"""
* write_panel.py - Project LDA - Pen_interface
*
* (C) 2008 by Kristian Mueller <kristian-m@kristian-m.de>
* All Rights Reserved
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
COLOR_LIST = ["#0000FF", "#FF0000", "#00FF00", "#FFFF00", "#FFFFFF", "#000000"]
DEFAULT_BG = 5 ## Black
DEFAULT_FG = 0 ## Blue
DEFAULT_SIZE = 4 ## Diameter 4 Pixel
## A note is defined by its strokes a background and the line thickness.
## Strokes of the same color and thickness are combined in a strokes_list.
## The order of strokes will stay the same.
class PenNote:
def __init__(self):
self.bg_color = DEFAULT_BG
self.last_fg_color = 0
self.last_line_thickness = DEFAULT_SIZE
self.last_stroke = (0, 0)
self.strokes_list = [] # current list of strokes from
# the same color or thickness
# strokes are tuples of src and dest
self.image_list = [] # list of (color, thickness, strokes_list)
self.image_list.append((self.last_fg_color, self.last_line_thickness,
self.strokes_list))
def add_stroke(self, src, dest, color, line_thickness):
if (color != self.last_fg_color) or \
(self.last_line_thickness != line_thickness) \
or self.last_stroke != src:
self.strokes_list = []
self.strokes_list.append((src[0], src[1]))
self.image_list.append((color, line_thickness, self.strokes_list))
self.last_fg_color = color
self.last_line_thickness = line_thickness
self.strokes_list.append((dest[0], dest[1]))
self.last_stroke = dest
def append_point_to_stroke(self, coord):
self.strokes_list.append(coord)
def append_new_point(self, coord, color, thickness):
self.strokes_list = []
self.strokes_list.append(coord)
self.image_list.append((color, thickness, self.strokes_list))
self.last_fg_color = color
self.last_line_thickness = thickness
def clear(self):
self.__init__()