[Announce] Telescope: Graphical task switcher with thumbnails - Page 33 - maemo.org

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lma	2012-07-06 , 08:12
Posts: 2,802 \| Thanked: 4,490 times \| Joined on Nov 2007	#321

It's using .desktop files, right? That's a freedesktop.org specification so most distributions are probably following it for their GUI app packages and should work even if the user hasn't installed one of the "desktop environments".

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Mitrandir	2012-07-06 , 08:14
Posts: 355 \| Thanked: 598 times \| Joined on Sep 2009 @ Nizhny Novgorod, Russia	#322

Yep, but I'm not sure that it will look and behave well on large screen...
Need to test it

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Onyros	2012-07-06 , 14:58
Posts: 59 \| Thanked: 9 times \| Joined on Jan 2008 @ Lisbon, Portugal	#323

Originally Posted by Mitrandir

Okay Anyway, Telescope needs some slight refactoring in some Maemo-specific places.

And I'm not sure that Launcher will work fine on non-maemo. Do you need it? I can simply disable it if it’s not needed.

In my case, I don't really need the launcher, so it can be disabled. There are plenty of launchers out there, not so much for Exposé/Scale like software.

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Mitrandir	2012-07-07 , 20:32
Posts: 355 \| Thanked: 598 times \| Joined on Sep 2009 @ Nizhny Novgorod, Russia	#324

I've done some fixes to Telescope and now it works fine on my Ubuntu 12.04.

I've no idea how to build i386 .deb on my amd64 PC, so I'm attaching only amd64 package now.

You can simply build package by yourself from the sources. By the way, I've moved development from garage.maemo.org to BitBucket: https://bitbucket.org/IlyaSkriblovsky/telescope. Check out latest sources from there.

To build desktop version, you need to change Makefile:
1. Uncomment "DEFINES = -DDESKTOP -DDBUS" and comment next line with -DMAEMO4
2. Change "LAUNCHER = 1" to "LAUNCHER = 0"

If you can compile Telescope but have no idea about packaging, you can simply do "make install" to install it. There is no "make uninstall" yet. If you want to remove Telescope installed that way, run

Code:

sudo rm -rf /etc/telescope.* /usr/share/telescope/ /usr/bin/telescope /etc/init.d/telescope-svc

Telescope's startup script in /etc/init.d won't work on desktop yet.

Currently, Telescope can't handle hotkeys with modifiers, i.e. you can't bind it to Ctrl+F10, for example. But you can change default F5 key to any other by adding "hotkey = <keyname>" in /etc/telescope.conf.

Telescope also can be called by following command:

Code:

dbus-send --print-reply --dest=org.telescope /Telescope org.telescope.Telescope.Show

You may want to alter following settings by adding lines to /etc/telescope.conf:

hotkey = <hotkey name (default=F5)>
background.filename = <path to wallpaper>
background.mode = <stretched|centered|scaled|cropped>
background.color = <color in #ffffff notation>
border.width = <border width in px>
text.font.size = <caption font size (default=24)>
test.yOffset = <caption Y-axis offset (default=-7)>
show.desktop.thumbnail = <on|off — show desktop as one of thumbnails. Switching to it doesn't work on Ubuntu but worked on KDE. Needs to be fixed>
show.desktop.iconify = <on|off — show desktop by minimizing all windows. Ugly but useful if default _NET_SHOW_DESKTOP method doesn't work for particular WM>

Also, keybindings when Telescope is active can be configured in /etc/telescope.keys file. See description in old post and example in another one.

Looking forward for your reports! Please let me know if it won’t work or if you won’t be able to compile it

Attached Files

telescope_2.0~rc15_amd64.deb (42.6 KB, 71 views)

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The Following 5 Users Say Thank You to Mitrandir For This Useful Post:
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auouymous	2012-07-07 , 22:09
Posts: 875 \| Thanked: 916 times \| Joined on Sep 2010	#325

Originally Posted by Mitrandir

Telescope also can be called by following command:
Code:
dbus-send --print-reply --dest=org.telescope /Telescope org.telescope.Telescope.Show

The "--print-reply" shouldn't be needed.

I would really like to try this out but not sure how well it would work with the 200+ windows I have open across 28 desktops. Would it show all windows or only windows from current desktop?

Does setting show.desktop.iconify=off prevent my windows from being minimized if I accidentally click the Telescope background? It would really suck if all of my windows became iconified.

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riv64	2012-07-07 , 22:45
Posts: 44 \| Thanked: 77 times \| Joined on Jan 2012	#326

The Grey Pilgrim you are awesome - it's works! I compiled the telescope on debian 64 but I have a problem with some incorrect thumbnails (lxterminal, xarchiver).

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Onyros	2012-07-08 , 00:07
Posts: 59 \| Thanked: 9 times \| Joined on Jan 2008 @ Lisbon, Portugal	#327

Aaaah, have a problem compiling in Arch

Code:

Thumbnail.cpp:481:5: error: narrowing conversion of ‘((((Thumbnail*)this)->Thumbnail::_clientOffsetX - borderWidth) + Settings::instance()->Settings::textLeftMargin())’ from ‘int’ to ‘short int’ inside { } is ill-formed in C++11 [-Werror=narrowing]
Thumbnail.cpp:481:5: error: narrowing conversion of ‘(((Thumbnail*)this)->Thumbnail::_clientOffsetY - headerHeight)’ from ‘int’ to ‘short int’ inside { } is ill-formed in C++11 [-Werror=narrowing]
Thumbnail.cpp:481:5: error: narrowing conversion of ‘(((((Thumbnail*)this)->Thumbnail::_clientScaledWidth + (borderWidth * 2)) - Settings::instance()->Settings::textLeftMargin()) - Settings::instance()->Settings::textRightMargin())’ from ‘int’ to ‘short unsigned int’ inside { } is ill-formed in C++11 [-Werror=narrowing]
Thumbnail.cpp:481:5: error: narrowing conversion of ‘headerHeight’ from ‘int’ to ‘short unsigned int’ inside { } is ill-formed in C++11 [-Werror=narrowing]
cc1plus: all warnings being treated as errors
make: *** [Thumbnail.o] Error 1

Any idea how to get around this? It's practically Chinese to me.

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lma	2012-07-08 , 00:58
Posts: 2,802 \| Thanked: 4,490 times \| Joined on Nov 2007	#328

Quick'n'dirty workaround: try adding -Wno-error=narrowing to CFLAGS in the Makefile.

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Onyros	2012-07-08 , 01:15
Posts: 59 \| Thanked: 9 times \| Joined on Jan 2008 @ Lisbon, Portugal	#329

That did it, I suppose it was a C++11 syntax error, right? It was just a warning, though. I was looking around for a way to compile even through errors, but you gave me a hand there, lma - thanks!

As for Telescope... Wow! Desktop performance is brilliant. And I only tried it on DWM, but it's already working pretty well

I'll try it also on Fluxbox, as on DWM clicking the "X" doesn't close windows, but I expect it to be window manager related.

Apart from that, thank you, so much, Mitrandir: it's a thing of beauty. Mind if I announce it on Arch Forums? I'm guessing there'll be lots of love for Telescope there.

edit: I'm also getting segfaults when I invoke Telescope and I'm on an empty tag/workspace, but both those errors only happen on DWM. In Fluxbox it's working fine and dandy, even closing windows. Some of the thumbnails have no display, though. Getting that on maximized and tiled windows (Fluxbox).

Next step for me is to create an active edges kind of script. Here I go digging into Python.

2nd edit: Compiled and working on the Raspberry Pi (ARMv6), blazing fast. Brilliant stuff. I'm buying you a beer. Or two.

Last edited by Onyros; 2012-07-08 at 03:43.

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Mitrandir	2012-07-08 , 06:18
Posts: 355 \| Thanked: 598 times \| Joined on Sep 2009 @ Nizhny Novgorod, Russia	#330

Thanks for reports and appreciation!

Originally Posted by auouymous

The "--print-reply" shouldn't be needed.

It is needed

Don’t know why, probably something wrong with my D-Bus handling code. But without --print-reply it doesn't work. Needs to be fixed.

Originally Posted by auouymous

Would it show all windows or only windows from current desktop?

Currently, no. This is a point for future improvements.

Originally Posted by auouymous

Does setting show.desktop.iconify=off prevent my windows from being minimized

This option only switches the method Telescope uses to show desktop:
1. show.desktop.iconify=off — Telescope shows desktop by sending _NET_SHOW_DESKTOP event
2. show.desktop.iconify=on — Telescope shows desktop by minimizing all windows
In either case desktop will be shown by clicked on background. But I can introduce new option to disable this

Originally Posted by riv64

I have a problem with some incorrect thumbnails (lxterminal, xarchiver).

Yes, I have issue with gnome-terminal’ thumbnail too. This needs to be investigated further. Probably something wrong with my thumbnail getting code, because it was only tested on Diablo.