On Tue, 2008-06-17 at 11:06 +0200, Frédéric Mantegazza wrote:
> On mardi 17 juin 2008, John Stowers wrote:
>
> > > > bzr branch http://johnstowers.co.nz/bzr/pygtk-lcd-widget/
> > >
> > > Many thanks, but I can't get the package: bzr waits forever, after
> > > creating the pygtk-lcd-widget/ dir and .bzr/ sub-dir...
> >
> > Are you sure?
> >
> > I just did a fresh checkout on another pc and it worked fine
>
> With this command?:
>
> $ bzr branch http://johnstowers.co.nz/bzr/pygtk-lcd-widget/
>
> (I'm not familiar with bazar...). As I said, some files are first
> downloaded (I can see a progressbar going to 100%), then, it does nothing,
> and does not return...
Weird, maybe a bzr bug. What does the output with
bzr branch http://johnstowers.co.nz/bzr/pygtk-lcd-widget/ --verbose
say? Can anyone else test this. You can zoom in and out with scroll
wheel (and change brightness with ctrl+scroll). Double click to change
text.
I attached the files also.
>
# Character set for the Squeezebox display
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#!/usr/bin/python
# -*- coding: latin1 -*-
#
# Copyright (C) 2005 Gerome Fournier <jefke(at)free.fr>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"SLIMP3 player emulator written in python"
import gtk
import gtk.glade
import sys
import signal
import struct
import socket
import random
_CHARS_FILENAME = "lcd_chars.txt"
_GLADE_FILENAME = "gslimp3.glade"
_KEY_MAPPING = {
"0": '0',
"1": '1',
"2": '2',
"3": '3',
"4": '4',
"5": '5',
"6": '6',
"7": '7',
"8": '8',
"9": '9',
"KP_0": '0',
"KP_1": '1',
"KP_2": '2',
"KP_3": '3',
"KP_4": '4',
"KP_5": '5',
"KP_6": '6',
"KP_7": '7',
"KP_8": '8',
"KP_9": '9',
"UP": 'UP',
"RIGHT": 'RIGHT',
"LEFT": 'LEFT',
"DOWN": 'DOWN',
"PAGE_UP": 'VOLUP',
"PAGE_DOWN": 'VOLDOWN',
"HOME": 'NOW_PLAYING',
"RETURN": 'PLAY',
"KP_ENTER": 'PLAY',
"SPACE": 'PAUSE',
"BRACKETLEFT": 'REW',
"BRACKETRIGHT": 'FWD',
"PLUS": 'ADD',
"KP_ADD": 'ADD',
"SLASH": 'SEARCH',
"KP_DIVIDE": 'SEARCH',
"A": 'SLEEP',
"B": 'BRIGHTNESS',
"F": 'SIZE',
"R": 'REPEAT',
"S": 'SHUFFLE',
}
class LCDWidget:
"GTK+ LCD Widget"
def __init__(self, widget, rows, cols):
"Instantiate a LCD widget"
self.rows = rows
self.cols = cols
self._area = widget
self._pix = None
self._table = {}
self._area.connect("configure-event", self._configure_cb)
self._area.connect("expose-event", self._expose_cb)
def set_zoom_factor(self, factor):
"Set the zoom factor"
self._factor = factor
self._border = 5
self._cborder = 3*factor
self._cwidth = 9*factor
self._cheight = 13*factor
self._width = 2*self._border + \
(self._cwidth+self._cborder)*self.cols + self._cborder
self._height = 2*self._border + \
(self._cheight+self._cborder)*self.rows + self._cborder
self._area.set_size_request(self._width, self._height)
def get_zoom_factor(self):
return self._factor
def refresh(self):
"Refresh the LCD widget"
self._area.queue_draw_area(0, 0, self._width, self._height)
def draw_char(self, row, col, charindex):
"""Draw the character stored at position 'charindex' in the internal
character definition table, on the LCD widget
"""
if not self._pix:
return
x = col * (self._cwidth+self._cborder) + self._border + self._cborder
y = row * (self._cheight+self._cborder) + self._border + self._cborder
self._pix.draw_drawable(self._back, self._table[charindex], \
0, 0, x, y, self._cwidth, self._cheight)
def set_brightness_percentage(self, percentage):
fg_colors = {
100: "#00ff96",
75: "#00d980",
50: "#00b269",
25: "#008c53",
0: "#303030"
}
if percentage not in fg_colors.keys():
return
if hasattr(self, "_brightness_percentage") \
and self._brightness_percentage == percentage:
return
self._brightness_percentage = percentage
self._set_colors(["#000000", "#303030", fg_colors[percentage]])
self._load_font_definition()
def get_brightness_percentage(self):
return self._brightness_percentage
def clear(self):
"Clear the LCD display"
for row in range(self.rows):
for col in range(self.cols):
self.draw_char(row, col, 32)
self.refresh()
def set_button_press_event_cb(self, cb):
"Setup a callback when a mouse button is pressed on the LCD display"
self._area.add_events(gtk.gdk.BUTTON_PRESS_MASK)
self._area.connect("button_press_event", cb)
def set_scroll_event_cb(self, cb):
"Setup a callback when wheel mouse is used on the LCD display"
self._area.connect("scroll_event", cb)
def create_char(self, charindex, shape):
"""Insert a new char in the character table definition,
at position 'charindex', based on 'shape'
"""
pix = gtk.gdk.Pixmap(self._area.window, self._cwidth, self._cheight)
pix.draw_rectangle(self._back, True, 0, 0, self._cwidth, self._cheight)
for x in range(5):
for y in range(7):
pix.draw_rectangle(self._charbg, True, \
x*2*self._factor, y*2*self._factor, \
self._factor, self._factor)
for index in range(35):
if shape[index] == "1":
row = index / 5
col = index - row*5
pix.draw_rectangle(self._charfg, True, \
col*2*self._factor, row*2*self._factor, \
self._factor, self._factor)
self._table[charindex] = pix
def print_line(self, string):
"Print a single line on the LCD display"
self.clear()
for i in range(len(string[:self.cols])):
self.draw_char(0, i, ord(string[i]))
self.refresh()
def _configure_cb(self, widget, event):
x, y, width, height = widget.get_allocation()
self._pix = gtk.gdk.Pixmap(widget.window, width, height)
self.set_brightness_percentage(100)
self._pix.draw_rectangle(self._back, True, 0, 0, width, height)
self._load_font_definition()
self.clear()
return True
def _expose_cb(self, widget, event):
if self._pix:
widget.window.draw_drawable(self._back, self._pix, 0, 0, 0, 0, \
self._width, self._height)
return False
def _set_colors(self, colors):
for widget, color in zip(["_back", "_charbg", "_charfg"], colors):
exec "self.%s = gtk.gdk.GC(self._pix)" % widget
exec "self.%s.set_rgb_fg_color(gtk.gdk.color_parse('%s'))" \
% (widget, color)
def _load_font_definition(self):
try:
file = open(_CHARS_FILENAME)
except IOError:
print >>sys.stderr, "Unable to open font characters definition '%s'" \
% _CHARS_FILENAME
sys.exit(1)
index = 1
shape = ""
for line in file.readlines():
line = line.rstrip()
if not line or line[0] == "#":
continue
if index == 1:
char_index = int(line, 16)
else:
shape = ''.join([shape, line])
index += 1
if index == 9:
self.create_char(char_index, shape)
index = 1
shape = ""
class Slimp3LCD(LCDWidget):
"An LCD display abble to parse Slimp3 LCD display packets"
_CODE_DELAY = 0
_CODE_CMD = 2
_CODE_DATA = 3
_CMD_CLEAR = 0
_CMD_HOME = 1
_CMD_MODE = 2
_CMD_DISPLAY = 3
_CMD_SHIFT = 4
_CMD_FUNC_SET = 5
_CMD_CG_ADDR = 6
_CMD_DD_ADDR = 7
def parse_lcd_packet(self, lcd_packet):
"Parse a SLIMP3 LCD packet"
self.addr = 0
self.shift = 1
i = 0
while i < len(lcd_packet)/2:
chunk = socket.ntohs(struct.unpack("H", lcd_packet[i*2:i*2+2])[0])
code = (chunk & 0xFF00) >> 8
cmd = chunk & 0x00FF
if code == self._CODE_DELAY:
pass
elif code == self._CODE_CMD:
i += self._handle_command(cmd, lcd_packet[i*2:])
elif code == self._CODE_DATA:
row = self.addr / self.cols
col = self.addr - self.cols*row
self.draw_char(row, col, cmd)
self._move_cursor(self.shift)
i += 1
self.refresh()
def _handle_command(self, cmd, string):
"Handle LCD commands"
if cmd >> self._CMD_CLEAR == 1:
self.clear()
self.addr = 0
self.shift = 1
elif cmd >> self._CMD_HOME == 1:
self.addr = 0
elif cmd >> self._CMD_MODE == 1:
if cmd & 2 != 0:
self.shift = 1
else:
self.shift = -1
elif cmd >> self._CMD_DISPLAY == 1:
pass
elif cmd >> self._CMD_SHIFT == 1:
if cmd & 0x04:
self.move_cursor(-1)
else:
self.move_cursor(1)
elif cmd >> self._CMD_FUNC_SET == 1:
return self._handle_function_set(cmd, string[2:4])
elif cmd >> self._CMD_CG_ADDR == 1:
return self._handle_char_definition(cmd, string[2:16])
elif cmd >> self._CMD_DD_ADDR == 1:
pass
return 0
def _handle_function_set(self, cmd, string):
"Handle Brightness stuff"
if ord(string[0]) == 3:
self.set_brightness_percentage(100 - 25 * ord(string[1]))
return 1
else:
return 0
def _handle_char_definition(self, char, string):
"Create a char as defined by 'string'"
if len(string) != 14:
print >>sys.stderr, "Character definition has a wrong size!"
return 0
shape = [' '] * 35
index = (0x3f & char) >> 3;
for i in range(7):
line = ord(string[2*i + 1])
for j in range(5):
if 1 & (line >> (4 - j)):
shape[i*5+j] = "1"
self.create_char(index, shape)
# defining a new char consume 7 extra command codes
return 7
def _move_cursor(self, shift):
self.addr += shift
if self.addr < 0:
self.addr = 0
elif self.addr > self.rows * self.cols - 1:
self.addr = self.rows * self.cols - 1
class Slimp3Gui:
"Main GUI"
def __init__(self):
"Instantiate the application"
self._setup_widgets()
self._set_zoom_factor(1)
def run(self):
"Start the application"
try:
signal.signal(signal.SIGINT, self._quit)
signal.signal(signal.SIGTERM, self._quit)
self._window.show_all()
self.print_bollocks()
gtk.main()
except KeyboardInterrupt:
self._quit()
except:
raise
def _quit(self, *args):
gtk.main_quit()
def _setup_widgets(self):
self._window = gtk.Window()
self._window.hide()
self._window.connect("destroy", self._quit)
widget = gtk.DrawingArea()
self._window.add(widget)
self.lcd_display = Slimp3LCD(widget, 2, 40)
self.lcd_display.set_button_press_event_cb(self.button_press_cb)
self.lcd_display.set_scroll_event_cb(self.scroll_event_cb)
def button_press_cb(self, widget, event):
self.print_bollocks(start=random.randint(16,30))
return True
def scroll_event_cb(self, widget, event):
change = 0
if (event.state & gtk.gdk.CONTROL_MASK) == gtk.gdk.CONTROL_MASK:
if event.direction == gtk.gdk.SCROLL_UP:
change = 25
elif event.direction == gtk.gdk.SCROLL_DOWN:
change = -25
p = self.lcd_display.get_brightness_percentage()
self._set_brightness_percentage(p+change)
else:
if event.direction == gtk.gdk.SCROLL_UP:
change = 1
elif event.direction == gtk.gdk.SCROLL_DOWN:
change = -1
z = self.lcd_display.get_zoom_factor()
self._set_zoom_factor(z+change)
self.print_bollocks()
return True
def _set_zoom_factor(self, factor):
if factor < 1:
factor = 1
if factor > 2:
factor = 2
self.lcd_display.set_zoom_factor(factor)
def _set_brightness_percentage(self, percent):
if percent < 0:
percent = 0
if percent > 100:
percent = 100
self.lcd_display.set_brightness_percentage(percent)
def print_bollocks(self, start=16):
self.lcd_display.clear()
self.lcd_display.print_line("ABCDEFGHIJKLMNOPabcdefghij")
for i in range(0,40):
self.lcd_display.draw_char(1,i,start+i)
self.lcd_display.refresh()
if __name__ == "__main__":
if len(sys.argv) > 1:
print >>sys.stderr, "Usage: %s\nSlimp3 client written in python." \
% sys.argv[0]
sys.exit(1)
app = Slimp3Gui()
app.run()
# vim: ts=4 sw=4 noet
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