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|
# sugar-aware GUI classes
# with boxes, sliders, spinbuttons, buttons, etc
#
# (c) Victor Lazzarini, 2006-08
#
# This library is free software; you can redistribute it
# and/or modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# csndsugui 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with csndsugui; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA
#
# As a special exception, if other files instantiate templates or
# use macros or inline functions from this file, this file does not
# by itself cause the resulting executable or library to be covered
# by the GNU Lesser General Public License. This exception does not
# however invalidate any other reasons why the library or executable
# file might be covered by the GNU Lesser General Public License.
#
#
# version 0.1.3 06/08/08
import pygtk
pygtk.require('2.0')
from sugar.activity import activity
import gtk, gobject
import sys
import csnd
import math
import locale
import os
import sugar.logger
import time
class BasicGUI:
"""Basic GUI with boxes, sliders, spins, buttons etc
using pygtk/sugar, from which GUI classes
can be derived for Csound use."""
def scale_font(self, widget):
font = widget.get_pango_context().get_font_description()
# The FONT DISPLAY in this activity can be resized (smaller or larger)
# by changing the value of "resize" below. "Resize" can be positive
# or negative, and is not limited to integers. A value of 1 equals a
# point in font size.
resize = 0
font_size = font.get_size() + (resize * 1024)
width = gtk.gdk.screen_width()
mult = width * .00076
if os.path.exists("/etc/olpc-release") or os.path.exists("/etc/power/olpc-pm"):
mult = width * .00082
elif os.path.exists("/etc/fedora-release"):
release = open("/etc/fedora-release").read()
if release.find("SoaS release 1 ") != -1:
mult = width * .00132
elif release.find("SoaS release 2 ") != -1:
mult = width * .00085
elif release.find("Fedora release ") != -1:
mult = width * .00119
font.set_size(int(font_size * mult))
widget.modify_font(font)
def set_channel(self,name, val):
"""basic bus channel setting method,
should be overriden for full-functionality."""
self.logger.debug("channel:%s, value:%.1f" % (name,val))
def set_filechannel(self,chan,name):
"""basic filename channel setting method
should be overriden for full-functionality."""
self.logger.debug("channel:%s, filename:%s" % (chan,name))
def set_message(self, mess):
"""basic message setting method
should be overriden for full-functionality."""
self.logger.debug(mess)
def get_slider_value(self,name):
"""returns the slider value
name: slider name (which should also be the attached bus channel name"""
for i in self.sliders:
if i[1] == name:
return i[2]
return 0
def get_button_value(self,name):
"""returns the button value (0 or 1)
name: button name (which should also be the attached bus channel name)"""
for i in self.buttons:
if i[1] == name:
return i[2]
return 0
def get_slider(self,name):
"""returns the slider widget instance
name: slider name"""
for i in self.sliders:
if i[1] == name:
return i[0]
return 0
def get_button(self,name):
"""returns the button widget instance
name: button name"""
for i in self.sliders:
if i[1] == name:
return i[0]
return 0
def set_focus(self):
""" called whenever the focus changes """
self.logger.debug(self.focus)
def focus_out(self, widget, event):
if(self.focus):
self.focus = False
self.set_focus()
def focus_in(self, widget, event):
if(not self.focus):
self.focus = True
self.set_focus()
def focus_back(self, widget, event):
self.window.disconnect(self.fback)
self.focus_connect()
def buttcallback(self, widget, data=None):
for i in self.buttons:
if i[0] == widget:
if i[2]:
i[2] = 0
i[0].modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0x8000,0x8000,0x8000, 2))
i[0].modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0x8000,0x8000,0x8000, 2))
else:
i[2] = 1
i[0].modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0xFFFF,0,0, 1))
i[0].modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0xFFFF,0,0, 2))
self.set_channel(i[1], i[2])
def button_setvalue(self, widget, value):
if not value:
widget.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0x0FFF,0,0x00FF, 2))
widget.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0xFFFF,0,0xFFFF, 2))
else:
widget.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0xFFFF,0,0, 1))
widget.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0xFFFF,0,0, 2))
def mbuttcallback(self, widget, data=None):
for i in self.mbuttons:
if i[0] == widget:
self.set_message(i[2])
def slidcallback(self,adj,widget):
for i in self.sliders:
if i[0] == widget:
i[2] = adj.value
if i[4]:
self.set_channel(i[1],i[2])
i[3].set_text("%f" % i[2])
pass
else:
value = i[5]*pow(i[6]/i[5], i[2]/i[6])
self.set_channel(i[1], value)
i[3].set_text("%.3f" % value)
pass
def spincallback(self,adj,widget):
for i in self.spins:
if i[0] == widget:
i[2] = adj.value
self.set_channel(i[1],i[2])
def filecallback(self,widget):
name = self.curfile[0].get_filename()
self.set_filechannel(self.curfile[2], name)
for i in self.buttons:
if i[0] == self.curfile[1]:
i[2] = name
self.filenames.update({self.curfile[2] : name})
self.curfile[0].destroy()
self.fback = self.window.connect('focus_out_event', self.focus_back)
def destroy_chooser(self,widget):
self.curfile[0].destroy()
def fbuttcallback(self, widget, data=None):
self.focus_disconnect()
for i in self.buttons:
if i[0] == widget:
chooser = gtk.FileSelection(i[1])
self.curfile = (chooser, i[0], i[1])
chooser.set_filename(self.data_path)
chooser.ok_button.connect("clicked", self.filecallback)
chooser.cancel_button.connect("clicked", self.destroy_chooser)
chooser.show()
def cbbutton(self,box,callback,title=""):
"""Creates a callbackbutton
box: parent box
callback: click callback
title: if given, the button name
returns the widget instance"""
self.cbbutts = self.cbbutts + 1
butt = gtk.Button(title)
self.scale_font(butt.child)
box.pack_start(butt, False, False, 2)
self.cbbuttons.append([butt,title,0])
butt.connect("clicked", callback)
butt.show()
return butt
def button(self,box, title="",label=""):
"""Creates a button (on/off)
box: parent box
title: if given, the button name,
which will also be the bus channel
name. Otherwise a default name is
given, BN, where N is button number
in order of creation.
label: if given, an alternative button name,
which will be displayed instead of title
returns the widget instance"""
self.butts = self.butts + 1
if title == "":
title = "B%d" % self.butts
if label == "": name = title
else: name = label
butt = gtk.Button(" %s " % name)
self.scale_font(butt.child)
butt.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0x8000,0x8000,0x8000, 2))
box.pack_start(butt, False, False, 1)
self.buttons.append([butt,title,0])
butt.connect("clicked", self.buttcallback)
butt.show()
return butt
def mbutton(self,box,mess,title=""):
"""Creates a mbutton (for sending a message)
box: parent box
title: if given, the button name, otherwise a default name is
given, BN, where N is button number
in order of creation.
mess: message to be sent when button is clicked
returns the widget instance"""
self.mbutts = self.mbutts + 1
if title == "":
title = "B%d" % self.mbutts
butt = gtk.Button(title)
butt.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0x0FFF,0,0x00FF, 1))
butt.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0xFFFF,0xFFFF,0x0000, 2))
box.pack_start(butt, False, False, 5)
self.mbuttons.append([butt,title,mess])
butt.connect("clicked", self.mbuttcallback)
butt.show()
return butt
def box(self,vert=True, parent=None, padding=3):
"""creates a box
vert: True, creates a vertical box; horiz.
otherwise
parent: parent box, None if this is a toplevel box
padding: box padding
returns the widget instance"""
if vert:
box = gtk.VBox()
else:
box = gtk.HBox()
if parent:
parent.pack_start(box, False, False, padding)
else:
self.outbox.pack_start(box, False, False, padding)
self.boxes.append(box)
box.show()
return box
def filechooser(self,box,title,label=""):
"""Creates a filechooser button
title: button name, also file bus channel name
box: parent box
label: if given, alternative name, for display purposes only
otherwise button will display its title."""
if label == "": name = title
else: name = label
butt = gtk.Button(name)
box.pack_start(butt, False, False, 5)
self.buttons.append([butt,title,"0"])
butt.connect("clicked", self.fbuttcallback)
self.set_filechannel(title,"0")
self.filenames.update({title:"0"})
butt.show()
return butt
def slider(self,init, start, end, x, y, box, title="",vert=True,linear=True,dwid=100,label=""):
"""Creates a slider
init: initial value
start, end: start and end of slider range
x, y: x and y sizes of slider
box: parent box
title: if given, the slider name,
which will also be the bus channel
name. Otherwise a default name is
given, SN, where N is slider number
in order of creation.
vert: vertical slider (True), else horiz.
linear: linear response (True), else exponential (zero or negative
ranges are not allowed)
dwid: display width in pixels
label: if given, the alternative slider name, for display only
returns the widget instance"""
self.slids = self.slids + 1
if title == "":
title = "S%d" % self.slids
a = end - start
if vert:
step = a/y
adj = gtk.Adjustment(init,start,end,step,step,0)
slider = gtk.VScale(adj)
slider.set_inverted(True)
else:
step = a/x
adj = gtk.Adjustment(init,start,end,step,step,0)
slider = gtk.HScale(adj)
slider.set_draw_value(False)
if step < 1.0:
slider.set_digits(3)
elif step < 10:
slider.set_digits(2)
elif step < 100:
slider.set_digits(1)
else:
slider.set_digits(0)
entry = gtk.Entry(5)
if vert: entry.set_size_request(dwid,50)
else: entry.set_size_request(dwid,50)
entry.set_editable(False)
if not linear:
if (init <= 0) or (start <= 0) or (end <= 0):
linear = True
if not linear:
pos = end*math.log(1,end/start)
slider.set_range(pos, end)
pos = end*math.log(init/start,end/start)
slider.set_value(pos)
if label == "": name = title
else: name = label
entry.set_text("%f" % init)
label = gtk.Label(name)
slider.set_size_request(x,y)
box.pack_start(slider, False, False, 5)
box.pack_start(entry, False, False, 2)
box.pack_start(label, False, False, 2)
self.sliders.append([slider,title,init,entry,linear,start,end])
adj.connect("value_changed", self.slidcallback, slider)
slider.show()
entry.show()
label.show()
self.set_channel(title, init)
return slider
def numdisplay(self,box,title="",init=0.0,label=""):
self.ndispwids = self.ndispwids + 1
entry = gtk.Entry()
if label == "": name = title
else: name = label
entry.set_text("%f" % init)
label = gtk.Label(name)
box.pack_start(entry, False, False, 2)
box.pack_start(label, False, False, 2)
self.ndisps.append([entry,title,init])
entry.show()
label.show()
self.set_channel(title,init)
return entry
def setnumdisp(self,title,val):
for i in self.ndisps:
if i[1] == title:
i[2] = val
i[0].set_text("%f" % val)
self.set_channel(title, val)
def spin(self,init, start, end, step, page, box, accel=0,title="",label=""):
"""Creates a spin button
init: initial value
start, end: start and end of slider range
step, page: small and large step sizes
box: parent box
accel: acceleration or 'climb rate' (0.0-1.0)
title: if given, the spin button name,
which will also be the bus channel
name. Otherwise a default name is
given, SPN, where N is spin number
in order of creation.
label: if given, the alternative name for the widget, for display only.
returns the widget instance"""
self.spinbs = self.spinbs + 1
if title == "":
title = "SP%d" % self.spinbs
adj = gtk.Adjustment(init,start,end,step,page,0)
spin = gtk.SpinButton(adj,accel)
self.scale_font(spin)
spin.set_alignment(.5)
if label == "": name = title
else: name = label
label = gtk.Label(name)
self.scale_font(label)
box.pack_start(spin, False, False, 3)
box.pack_start(label, False, False, 0)
self.spins.append([spin,title,init])
adj.connect("value_changed", self.spincallback, spin)
spin.show()
label.show()
self.set_channel(title, init)
return spin
def text(self, name, box=None,colour=(0,0,0)):
"""Creates a static text label
name: text label
box: parent box, None if text is to be placed toplevel
colour: RGB values in a tuple (R,G,B)
returns the widget instance"""
label = gtk.Label(name)
self.scale_font(label)
label.set_use_markup(True)
label.modify_fg(gtk.STATE_NORMAL, gtk.gdk.Color(colour[0],colour[1],colour[2], 0))
if box:
box.pack_start(label, False, False, 3)
else:
self.outbox.pack_start(label, False, False, 3)
label.show()
return label
def framebox(self, name, vert=True, parent=None, colour=(0,0,0), padding=5):
"""Creates a frame box
name: text label
vert: vertical (True) box, else horiz.
parent: parent box, if None, this is a toplevel box
colour: RGB values in a tuple (R,G,B)
padding: padding space
returns the box widget instance"""
frame = gtk.Frame(name)
self.scale_font(frame.get_label_widget())
frame.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(colour[0],colour[1],colour[2], 0))
frame.get_label_widget().modify_fg(gtk.STATE_NORMAL, gtk.gdk.Color(colour[0],colour[1],colour[2], 0))
frame.get_label_widget().set_use_markup(True)
if parent:
parent.pack_start(frame, False, False, padding)
else:
self.outbox.pack_start(frame, False, False, padding)
if vert:
box = gtk.VBox()
else:
box = gtk.HBox()
frame.add(box)
frame.show()
box.show()
return box
def vsliderbank(self,items,init, start, end, x, y, box):
"""Creates a vertical slider bank
items: number of sliders
init: initial value
start, end: start and end of slider range
x, y: x and y sizes of slider
box: parent box"""
slid = self.slids
for i in range(slid, slid+items):
cbox = self.box(parent=box)
self.slider(init,start,end,x,y,cbox)
def hsliderbank(self,items,init, start, end, x, y, box):
"""Creates a horizontal slider bank
items: number of sliders
init: initial value
start, end: start and end of slider range
x, y: x and y sizes of slider
box: parent box"""
slid = self.slids
for i in range(slid, slid+items):
cbox = self.box(False,box)
self.slider(init,start,end,x,y,cbox,"",False)
def buttonbank(self,items, box):
"""Creates a button bank
items: number of sliders
box: parent box."""
start = self.butts
for i in range(start, start+items):
self.button(box)
def delete_event(self, widget, event, data=None):
return False
def get_toolbox(self):
"""Returns the Activity toolbox"""
return self.toolbox
def channels_reinit(self):
""" resets channel to current widget values"""
for j in self.buttons:
if(j[1] != "pause"):
if(j[1] != "play"):
if(j[1] != "reset"):
self.set_channel(j[1],j[2])
for j in self.sliders:
if j[4]:
self.set_channel(j[1],j[2])
pass
else:
value = j[5]*pow(j[6]/j[5], j[2]/j[6])
self.set_channel(j[1], value)
for j in self.spins:
self.set_channel(j[1],j[2])
def widgets_reset(self):
""" resets widget to channel values"""
for j in self.buttons:
self.button_setvalue(j[0], j[2])
self.set_channel(j[1],j[2])
for j in self.sliders:
j[0].set_value(j[2])
j[0].emit("value_changed")
for j in self.spins:
j[0].set_value(j[2])
j[0].emit("value_changed")
def channels_save(self):
""" Saves a list with channel names and current values.
Returns a list of tuples (channel_name, channel_value)"""
chan_list = []
for i in self.channel_widgets:
for j in i:
if(j[1] != "pause"):
if(j[1] != "play"):
if(j[1] != "reset"):
chan_list.append((j[1],j[2]));
return chan_list
def channels_load(self, chan_list):
""" Loads a list with channel names and values into the
current channel list """
for i in self.channnel_widgets:
for j in i:
cnt = 0
while(j[1] == chan_list[cnt][0]):
j[1] = chann_list[cnt][0]
j[2] = chan_list[cnt][1]
cnt = cnt+1
self.widgets_reset()
def set_channel_metadata(self):
""" Saves channel data as metadata. Can be called in
write_file() to save channel/widget data """
mdata = self.channels_save()
for i in mdata:
self.window.metadata['channel-'+i[0]] = str(i[1])
def get_channel_metadata(self):
""" Retrieves channel data from metadata. Can be called after
widgets have been created to retrieve channel data and
reset widgets """
for i in self.channel_widgets:
for j in i:
mdata = self.window.metadata.get('channel-'+j[1],'0')
if mdata is None: continue
else:
try: j[2] = float(mdata)
except: j[2] = mdata
self.widgets_reset()
def nofocus(self):
pass
def focus_connect(self):
if not self.connected:
self.focus = True
self.in_id = self.window.connect('focus_in_event', self.focus_in)
self.out_id = self.window.connect('focus_out_event', self.focus_out)
self.connected = True
def focus_disconnect(self):
if self.connected:
self.window.disconnect(self.in_id)
self.window.disconnect(self.out_id)
self.connected = False
def __init__(self,act,colour=(-1,-1,-1),vert=True,toolbox=None):
"""Constructor
act: activity object
colour: bg colour RGB tuple (R,G, B)
vert: True for vertical topmost arrangement, horiz. otherwise
toolbox: activity toolbox object, if None (default) a
standard toolbox will be supplied"""
self.sliders = []
self.slids = 0
self.spins = []
self.spinbs = 0
self.buttons = []
self.butts = 0
self.cbbuttons = []
self.cbbutts = 0
self.mbuttons = []
self.mbutts = 0
self.boxes = []
self.ndisps = []
self.ndispwids = 0
self.connected = False
self.channel_widgets = [self.sliders, self.spins, self.buttons]
self.filenames = dict()
self.window = act
if toolbox == None:
self.toolbox = activity.ActivityToolbox(self.window)
else: self.toolbox = toolbox
self.window.set_toolbox(self.toolbox)
self.toolbox.show()
if colour[0] >= 0:
self.window.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(colour[0],colour[1],colour[2], 0))
if vert: self.outbox = gtk.VBox()
else: self.outbox = gtk.HBox()
self.window.set_canvas(self.outbox)
self.data_path = os.path.join(act.get_activity_root(),"data/")
self.outbox.show()
self.logger = sugar.logger.logging.getLogger('csndsugui')
class CsoundGUI(BasicGUI):
"""A class inheriting from BasicGUI containing a Csound instance and a performance
thread instance."""
def set_channel(self,name,val):
"""overrides the base method.
sets the bus channel value, called by the widget callbacks
channel names 'play', 'pause' and
'reset' are reserved for these respective uses"""
if not self.ready:
if name == "play":
self.play()
elif name == "pause":
self.pause()
elif name == "reset":
self.reset()
self.csound.SetChannel(name,val)
else:
BasicGUI.set_channel(self,name,val)
def set_filechannel(self,chan,name):
"""overrides the base method, setting the channel string"""
if not self.ready:
self.csound.SetChannel(chan,name)
else:
BasicGUI.set_filechannel(self,chan,name)
def set_message(self, mess):
"""overrides the base method, sends a score message"""
self.perf.InputMessage(mess)
def set_focus(self):
"""overrides the base class method, resetting/recompiling Csound"""
if self.focus:
self.compile()
self.channels_reinit()
if self.replay and not self.on:
self.play()
self.logger.debug("focus_off and playing")
else:
self.replay = self.on
self.logger.debug("focus_out and stopping")
self.reset()
return 1
def play(self):
"""Starts a performance. """
if not self.on:
if self.paused: return
self.on = True
self.perf.Play()
else:
self.on = False
self.perf.Pause()
def pause(self):
"""Pauses a performance. """
if self.on:
self.on = False
self.paused = True
self.perf.Pause()
elif self.paused:
self.on = True
self.paused = False
self.perf.Play()
def csd(self, name):
"""Sets the source CSD and compiles it.
name: CSD filename
returns zero if successful"""
path = activity.get_bundle_path()
if self.ready:
res = self.csound.Compile("%s/%s" % (path,name))
if not res:
self.ready = False
self.focus_connect()
self.path = path
self.name = name
return res
def recompile(self):
"""Recompiles the set CSD.
returns zero if successful"""
if not self.ready and self.name != "0":
self.perf.Stop()
self.perf.Join()
self.on = False
self.paused = False
self.perf = csnd.CsoundPerformanceThread(self.csound)
if self.arglist != None:
res = self.csound.Compile(self.arglist.argc(),self.arglist.argv())
else:
res = self.csound.Compile("%s/%s" % (self.path,self.name))
if(res): self.ready = True
return res
def compile(self,name=None,args=[]):
"""Compiles Csound code.
name: CSD filename if given
args: list of arguments (as strings)
returns 0 if successful , non-zero if not."""
if self.ready:
if args != []:
self.arglist = csnd.CsoundArgVList()
self.path = activity.get_bundle_path()
if name != None: self.name = name
elif self.name == "0": return -1
if self.arglist != None:
if name != None:
self.arglist.Append("csound")
self.arglist.Append("%s/%s" % (self.path,self.name))
for i in args:
self.arglist.Append(i)
res = self.csound.Compile(self.arglist.argc(),self.arglist.argv())
else: res = self.csound.Compile("%s/%s" % (self.path,self.name))
if not res:
self.ready = False
self.focus_connect()
else:
self.arglist = None
return res
def reset(self):
"""Resets Csound, ready for a new CSD"""
if not self.ready:
self.perf.Stop()
self.perf.Join()
self.on = False
self.paused = False
self.perf = csnd.CsoundPerformanceThread(self.csound)
self.ready = True
def close(self, event):
self.reset()
sys.exit(0)
def tcallback(self,cbdata):
if self.stopcb: return False
if self.on and self.sync:
self.tcb(cbdata)
return True
def set_timer(self,time,cb,cbdata,sync=True):
"""Sets a timer callback, called at time intervals.
Sync=True makes it start/stop with Csound performance"""
if(self.stopcb == True):
self.sync = sync
self.tcb = cb
self.stopcb = False
gobject.timeout_add(time,self.tcallback,cbdata)
def stop_timer(self):
"""Stops the timer"""
self.stopcb = True
def score_time(self):
"""Returns the current score time"""
return self.csound.GetScoreTime()
def __init__(self,act,colour=(-1,-1,-1),vert=True):
"""constructor
act: activity object
colour: bg colour RGB tuple (R,G, B)
vert: True for vertical topmost arrangement, horiz. otherwise."""
locale.setlocale(locale.LC_NUMERIC, 'C')
self.csound = csnd.Csound()
self.perf = csnd.CsoundPerformanceThread(self.csound)
BasicGUI.__init__(self,act,colour,vert)
self.ready = True
self.on = False
self.paused = False
self.name = "0"
self.arglist = None
self.replay = False
self.stopcb = True
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