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I wonder whether it would be possible to have in a Python3 script that records sound while Pympress displays a presentation, writing slide transition times to a text file. The same way that a presentation is started by pressing space, this would start sound recording and mark the starting time for the transition times. After that, each slide transition time should be written to a text file (page number isn’t required in the text file). Once the last slide is reached, the next pressing of the space key should stop sound recording (and write the last slide transition time [which actually contains its duration]). Many thanks for your help. |
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Replies: 2 comments 4 replies
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I think a key element to write that script here would be to use DBus messages that pympress emits on play/pause and slide transitions. That’s one of the nice side effects of using the Gtk.Application (since v1.6.0). Below some excerpts from a On document load, page set to 1 and timer paused: Un-pause timer: page change: Following the pretty good dbus tutorial here, I managed to write the following (rather simple) code: #!/usr/bin/env python3
import dbus
from dbus.mainloop.glib import DBusGMainLoop
import time
import gi
from gi.repository import GLib
class PympressTimer:
def __init__(self):
self.paused_at = 0
self.start = None
self.page = 0
def handle(self, *messages):
timestamp = time.time()
for msg in messages:
if not isinstance(msg, dbus.Dictionary) or msg.signature != 'sv':
continue
if 'pause-timer' in msg:
if msg['pause-timer']:
self.paused_at = timestamp
else:
self.start = timestamp - self.paused_at
self.paused_at = None
if 'page' in msg:
self.page = msg['page']
if self.start is not None:
print(f'{timestamp - self.start:4.2f} page', self.page)
def run(self):
DBusGMainLoop(set_as_default=True)
bus = dbus.SessionBus()
bus.add_signal_receiver(self.handle, 'Changed', 'org.gtk.Actions', 'io.github.pympress')
loop = GLib.MainLoop()
loop.run()
if __name__ == '__main__':
PympressTimer().run()This tracks whenever page transitions are made and only counts up the time when the pympress timer is un-paused |
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Many thanks for the basic script, @Cimbali. I have a basic question too: how can I run the script using the Windows binaries? I mean, I don’t have Python installed on the Windows machine and I don’t know how to invoke it. Many thanks for your help again. |
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I think you’d need to package it with cx_Freeze from a machine that has python. The easiest is to install msys2 I believe, be it on the build machine or the final machine. From there install python and everything you need. This can be done built on github servers, as we do from the build github action for example: pympress/.github/workflows/draft_release.yml Lines 77 to 146 in b6e2091 |
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I don’t know whether I should open a bug report, but for some strange reason I’m on Fedora 35 and I cannot imagine which dependency I might be missing. I’m using version 1.7b1. Is this a bug or what am I missing? Many thanks for your help. |
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I added the page number action after the 1.7.0b1, so you'll need latest master |
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Sorry, I didn’t know that. I’m going to wait until the next beta release. |
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I think a key element to write that script here would be to use DBus messages that pympress emits on play/pause and slide transitions. That’s one of the nice side effects of using the Gtk.Application (since v1.6.0).
Below some excerpts from a
dbus-monitoroutput that could be useful.On document load, page set to 1 and timer paused: