Qball's Weblog » General http://blog.sarine.nl Beati pauperes spiritu Tue, 17 Jan 2012 20:33:08 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Putting IfThenElse to work http://blog.sarine.nl/2011/12/30/putting-ifthenelse-to-work/ http://blog.sarine.nl/2011/12/30/putting-ifthenelse-to-work/#comments Fri, 30 Dec 2011 18:49:13 +0000 Qball http://blog.sarine.nl/?p=1071 read more »]]> I blogged previous about IfThenElse..  It is a very simple tool, but combined with random other programs can become a fun and powerful tool:

The following script locks my screen, puts jabber status on away when I turn off the lights in the room.  Unlocks the screen when turning the lights back on.. Also when I start vlc/totem/mplayer it will set my jabber status to away “watching a movie”.

 

This is all described in the following xml file:

?View Code XML
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<interface>
	<object class="IfThenElseTimerTrigger" id="lights_timer">
		<property name="timeout">5</property>
		<child>
			<object class="IfThenElseMultiAction" id="main_multiplier">
				<child>
					<object class="IfThenElseChain" id="lights_chain">
						<child type="if">
							<object class="IfThenElseExternalToolCheck" id="check_light">
								<property name="cmd">./Scripts/domotica_check_light.sh</property>
								<property name="true_status">1</property>
								<property name="false_status">0</property>
								<property name="compare_old_state">true</property>
							 </object>
						</child>
						<child type="then">
							<object class="IfThenElseMultiAction" id="multiplier">
								<child>
									<object class="IfThenElseExternalToolAction" id="lights_off_action">
										<property name="cmd">gnome-screensaver-command -a -l</property>
										<property name="kill_child">false</property>
									</object>
								</child>
								<child>
									<object class="IfThenElseExternalToolAction" id="lights_off_action2">
										<property name="cmd">mpc -h 192.150.0.106 stop</property>
										<property name="kill_child">false</property>
									</object>
								</child>
								<child>
									<object class="IfThenElseExternalToolAction" id="lights_off_action3">
										<property name="cmd">gajim-remote change_status away</property>
										<property name="kill_child">false</property>
									</object>
								</child>
							</object>
						</child>
						<child type="else">
							<object class="IfThenElseMultiAction" id="lights_on_action_multi">
								<child>
									<object class="IfThenElseExternalToolAction" id="lights_on_action">
										<property name="cmd">gnome-screensaver-command -d</property>
										<property name="kill_child">false</property>
									</object>
								</child>
								<child>
									<object class="IfThenElseExternalToolAction" id="lights_on_action2">
										<property name="cmd">gajim-remote change_status online</property>
										<property name="kill_child">false</property>
									</object>
								</child>
							</object>
						</child>
					</object>
				</child>
				<child>
					<object class="IfThenElseChain" id="movie_chain">
						<child type="if">
							<object class="IfThenElseExternalToolCheck" id="check_movie">
								<property name="cmd">./Scripts/check_movie.sh</property>
								<property name="true_status">1</property>
								<property name="false_status">0</property>
								<property name="compare_old_state">true</property>
							 </object>
						</child>
						<child type="then">
							<object class="IfThenElseExternalToolAction" id="movie_on_action">
								<property name="cmd">gajim-remote change_status away "watching movie"</property>
								<property name="kill_child">false</property>
							</object>
						</child>
						<child type="else">
							<object class="IfThenElseExternalToolAction" id="movie_off_action">
								<property name="cmd">gajim-remote change_status online</property>
								<property name="kill_child">false</property>
							</object>
						</child>
					</object>
				</child>
			</object>
		</child>
	</object>
</interface>
]]> http://blog.sarine.nl/2011/12/30/putting-ifthenelse-to-work/feed/ 0 Waldo 2 http://blog.sarine.nl/2011/12/29/waldo-2/ http://blog.sarine.nl/2011/12/29/waldo-2/#comments Thu, 29 Dec 2011 18:57:32 +0000 Qball http://blog.sarine.nl/?p=1069 Another run, as you can see it is developing differently here:















 

I always find it fun to watch how it develops.

]]> http://blog.sarine.nl/2011/12/29/waldo-2/feed/ 0 EvO – Image vectorization using evolution http://blog.sarine.nl/2011/12/29/evo-image-vectorization-using-evolution/ http://blog.sarine.nl/2011/12/29/evo-image-vectorization-using-evolution/#comments Thu, 29 Dec 2011 14:49:02 +0000 Qball http://blog.sarine.nl/?p=1062 read more »]]> I promised to put this code online, so here it is. EvO. A small program that (with very crappy results) uses ‘genetic’ algorithm to vectorize images.

It is based on this blog post: http://rogeralsing.com/2008/12/07/genetic-programming-evolution-of-mona-lisa/

I never finished it to produce nice results like the above blog post, but I had fun time writing it.

It is written in vala. Code can be found on github: https://github.com/DaveDavenport/Evo

An example (waldo): (see full gallery here)












../evo --help
Usage:
  evo [OPTION...] Evo

Help Options:
  -?, --help           Show help options

Application Options:
  -i, --input          Input file
  -j, --threads        Number of CPU threads to run
  -p, --population     Size of the popution (default 16)
  -n, --initial        Initial file
  -r, --render         Render file
  -w, --width          Output width
  -h, --height         Output height
  --output-png         Output png instead of svg
]]> http://blog.sarine.nl/2011/12/29/evo-image-vectorization-using-evolution/feed/ 0 If Then Else http://blog.sarine.nl/2011/12/27/if-then-else/ http://blog.sarine.nl/2011/12/27/if-then-else/#comments Tue, 27 Dec 2011 20:51:37 +0000 Qball http://blog.sarine.nl/?p=1056 read more »]]> I wrote a small tool. in the past day. called IfThenElse (Yes needs a better name).
The idea is simple:
You have a trigger, for example a timeout.
So for example every 10 minutes check the network state.
When the network state is connected, Check every 2.5 minutes google reader for unread messages.
When there are unread messages show a status icon…

Or in image form (this is generated from a working example):

 

The whole thing is based on a one ‘main’ program that calls external scripts to function.  The program itself is written in Vala, uses GtkBuilder to dynamically load ‘flows’  like the above one.

The main goal in the future is that I can do things like, pause the music when skype calls come in. Notify me every 10 minutes when there are items on my todo list. etc.

The program is not ready for use, but I am looking for some input/help.

In a list:

  • Current input format is a GtkBuilder file.  This nicely ‘matches’ the structure of the above flow (it is just an xml file).  But is not very user friendly to write.
  • So we either generate a gui to generate the chains? (should be easy, just allow user to draw a flowchart) or come up with a better file format.
  • Use Cases.  This would help me decide what needs to be added. At the moment I have a timer trigger working, I can execute external programs for the check. Execute external programs as action or show an status icon..
  • Write examples helper scripts?   (allow directly calling of python scripts? javascript? using libpeas?)

Please mail me (qball@gmpclient.org) or contact me on irc #gmpc @ irc.freenode.net.

Q

 

Code can be found here: https://github.com/DaveDavenport/IfThenElse

]]> http://blog.sarine.nl/2011/12/27/if-then-else/feed/ 0 MultiMonitorBackground http://blog.sarine.nl/2011/11/09/multimonitorbackground/ http://blog.sarine.nl/2011/11/09/multimonitorbackground/#comments Wed, 09 Nov 2011 18:48:23 +0000 Qball http://blog.sarine.nl/?p=1036 In git I fixed the multimonitorbackground tool, It will not set the background so even fake transparency tools pick it up. (like gnome-terminal).

yes it is nothing special, but it works so much better then normal desktop set tools.

]]> http://blog.sarine.nl/2011/11/09/multimonitorbackground/feed/ 0 Multi Monitor Background http://blog.sarine.nl/2011/11/06/multi-monitor-background/ http://blog.sarine.nl/2011/11/06/multi-monitor-background/#comments Sun, 06 Nov 2011 21:14:48 +0000 Qball http://blog.sarine.nl/?p=1031 And 2 screenshots:
background-feh background-multimonitorbackground

For some reason though, gnome-terminal does not pick up the new background? anybody can tell me why? (it does when set with feh.)

]]> http://blog.sarine.nl/2011/11/06/multi-monitor-background/feed/ 0 MultiMonitor Background settings. http://blog.sarine.nl/2011/11/06/multimonito-background-settings/ http://blog.sarine.nl/2011/11/06/multimonito-background-settings/#comments Sun, 06 Nov 2011 19:40:04 +0000 Qball http://blog.sarine.nl/?p=1023 read more »]]> I got sick and tired of no program being able to set desktop background on multimonitor setups.
It either stretch it over the 2 desktops, or whatever, because most tools like xsetbg and feh assume it one screen.

This tools sets one image scaled to the size of each monitor. Clipping the image (monitor is then centered on the image) is optional.
It will never try to scale up the image.

?View Code CPP
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/* multidesktopbackground.vala
 *
 * Copyright (C) 2011 Qball Cow <qball @gmpclient.org>
 *
 * 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 3 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, see <http: //www.gnu.org/licenses/>.
 *
 * Author:
 * 	Qball Cow </qball><qball @gmpclient.org>
 */
using Gtk;
 
/**
 * Set the actual background on the X server
 */
static void set_background(Gdk.Window root_window, Gdk.Pixbuf background_pb)
{
		Gdk.Pixmap pixmap;
		Gdk.Bitmap bitmap;
		// Grab server, without this, it won't work.
		Gdk.x11_grab_server();
 
		// Set background pixmap.
		Gdk.pixbuf_render_pixmap_and_mask(background_pb,out pixmap, out bitmap, 0);
		root_window.set_back_pixmap(pixmap, false);
 
		// Otherwise the background will only update after being exposed.
		/// @todo can I trigger an expose event on GdkWindow?
		root_window.draw_pixbuf(null,
				background_pb, 0,0,0,0, 
				background_pb.get_width(), background_pb.get_height(),
				Gdk.RgbDither.NONE, 0,0);
 
		// Release
		Gdk.x11_ungrab_server();
}
 
 
/**
 * Option parser
 */
string  clipping = null;
const GLib.OptionEntry[] entries = {
        {"clipping", 'c', 0, GLib.OptionArg.STRING, ref clipping, "Enable clipping", null},
        {null}
};
 
/**
 * Main program
 */
static int main (string[] argv)
{
	bool clip = false;
 
	/**
	 * Parse command line list
	 */
    GLib.OptionContext og = new GLib.OptionContext("Evo");
    og.add_main_entries(entries,null);
	try{
		og.parse(ref argv);
	}catch (Error e) {
		GLib.error("Failed to parse command line options: %s\n", e.message);
	}
	/**
	 * Parse clipping
	 */	
	if(clipping != null) {
		if(clipping.down() == "true") {
			clip = true;
		}
	}
 
	/**
	 * Get filename
	 */
	if(argv.length  != 2) {
		GLib.error("Failed parsing commandlines");
	}
	string file = argv[1];
 
	// Initialize GTK.
	Gtk.init(ref argv);
 
	// Get display
	Gdk.Display display = Gdk.Display.get_default();
 
	// Get number of screens.
	int num_screens = display.get_n_screens();
 
	// Walk the screens.
	for(int screen = 0; screen < num_screens ; screen++)
	{
		Gdk.Screen gscreen = display.get_screen(screen);
		Gdk.Window root_window = gscreen.get_root_window();
 
		int rw_width = gscreen.get_width();
		int rw_height = gscreen.get_height();
 
		// Create background pixmap.
		var background_pb = new Gdk.Pixbuf(Gdk.Colorspace.RGB,false,8, rw_width, rw_height);
 
 
		// Iterate over all the monitors and draw the image there.
 
		// Get number of monitors.
		int num_monitors = gscreen.get_n_monitors();
		for(int monitor = 0; monitor < num_monitors; monitor++)
		{
			Gdk.Rectangle rectangle;
			// get monitor size
			gscreen.get_monitor_geometry(monitor, out rectangle);
 
			// Gdk.Pixbuf loading and drawing inside.
			try
			{
				Gdk.Pixbuf? pb = new Gdk.Pixbuf.from_file(file); 
				// Get size
				int pb_width = pb.get_width();
				int pb_height = pb.get_height();
				// Scaling
				double x_scale = pb_width/(double)rectangle.width;
				double y_scale = pb_height/(double)rectangle.height;
 
				if(x_scale >= 1 && y_scale >= 1 && clip) 
				{
					if(x_scale > y_scale)
					{
						int new_width = (int)(pb_width/y_scale);
						int new_height = (int)(pb_height/y_scale);
						pb = pb.scale_simple(new_width, new_height, Gdk.InterpType.HYPER); 
 
						int x_offset = (new_width - rectangle.width)/2;
						int y_offset = (new_height- rectangle.height)/2;
						pb.copy_area(
								x_offset,y_offset,
								new_width-x_offset*2,new_height-y_offset*2,
								background_pb,
								rectangle.x, rectangle.y
								);
					} else {
						int new_width = (int)(pb_width/x_scale);
						int new_height = (int)(pb_height/x_scale);
						pb = pb.scale_simple(new_width, new_height, Gdk.InterpType.HYPER); 
 
						int x_offset = (new_width - rectangle.width)/2;
						int y_offset = (new_height- rectangle.height)/2;
						pb.copy_area(
								x_offset,y_offset,
								new_width-x_offset*2,new_height-y_offset*2,
								background_pb,
								rectangle.x,rectangle.y
								);
					}
				}
				else if(x_scale > y_scale)
				{
					int new_width = (int)(pb_width/x_scale);
					int new_height = (int)(pb_height/x_scale);
					pb = pb.scale_simple(new_width, new_height, Gdk.InterpType.HYPER); 
 
					pb.copy_area(0,0,
							new_width, new_height,
							background_pb,
							rectangle.x + (rectangle.width-new_width)/2,
							rectangle.y + (rectangle.height-new_height)/2
							);
				}
				else 
				{
					int new_width = (int)(pb_width/y_scale);
					int new_height = (int)(pb_height/y_scale);
					pb = pb.scale_simple(new_width, new_height, Gdk.InterpType.HYPER); 
 
					pb.copy_area(0,0,
							new_width, new_height,
							background_pb,
							rectangle.x + (rectangle.width-new_width)/2,
							rectangle.y + (rectangle.height-new_height)/2
							);
 
				}
 
			} catch (Error e) {
				GLib.error("Failed loading pixbuf: %s\n", e.message);
			}
 
		}
		set_background(root_window, background_pb);
	}
 
	return 1;
}
</qball>

compile with:

?View Code BASH
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valac --pkg=gtk+-2.0  MultiDesktopBackground.vala  --pkg=gdk-x11-2.0 --pkg=x11

edit: updated it a bit and put in git: here.

]]> http://blog.sarine.nl/2011/11/06/multimonito-background-settings/feed/ 0 Google Reader/GMail Theme for wordpress. http://blog.sarine.nl/2011/11/06/google-readergmail-theme-for-wordpress/ http://blog.sarine.nl/2011/11/06/google-readergmail-theme-for-wordpress/#comments Sun, 06 Nov 2011 13:40:16 +0000 Qball http://blog.sarine.nl/?p=1021 I am one of the rare people that like the new google theme.. I would love to have a google worpress theme that matches it? anybody knows if this exists. (A GTK theme that matches it would be complete blizz)

 

]]> http://blog.sarine.nl/2011/11/06/google-readergmail-theme-for-wordpress/feed/ 0 Gnome Music Player 11.11, http://blog.sarine.nl/2011/11/06/gnome-music-player-11-11/ http://blog.sarine.nl/2011/11/06/gnome-music-player-11-11/#comments Sun, 06 Nov 2011 12:59:31 +0000 Qball http://blog.sarine.nl/?p=1013 read more »]]> When doing the latest release (11.8) I planned to make another release this month (11.11). But as it currently looks this is going to be a problem. Again help welcome.

Because off lack of time on my side and the magic vanishing action of  LibertyZero I strongly doubt I will will be able to make a release this month. (Crap)

But a changelog so far:

What’s New in 11.11

  • New sidebar. (more info here) Different view, ordering into categories, etc.
  • Removing status bar, moving status icons into sidebar.
  • Changed collapsed mode. (more info here)
  • Fixed keybindings for browsers and keybinding highlight mode. (more info)
  • Move to libglyr. This is a big one. It removes a lot of functionality from GMPC and into GLYR.
    Metadata is something that is in constant flux, providers appear, gone missing, break api, etc. Having
    this in a separate library is good for GMPC maintainability.
  • – Remove metadata cache (now in libglyr)
  • – Remove metadata plugins (now provided by libglyr)
  • – Add separate Backdrops metadata type.
  • – Remove pixbuf cache (to be done)
  • – Replace metadata selector. (to be done)
  • AutoMPD: Run GMPC without setting up MPD. (More info here)

Improved in 11.11

  • Tooltips over sidebar.
  • Slight improvement to startup times.
  • Removal off old, deprecated code.

]]> http://blog.sarine.nl/2011/11/06/gnome-music-player-11-11/feed/ 0 Covers can be good http://blog.sarine.nl/2011/10/15/covers-can-be-good/ http://blog.sarine.nl/2011/10/15/covers-can-be-good/#comments Sat, 15 Oct 2011 21:58:07 +0000 Qball http://blog.sarine.nl/?p=996 Listen to this one completely: http://www.youtube.com/watch?v=XNeWvxWv2o0&feature=related .

]]> http://blog.sarine.nl/2011/10/15/covers-can-be-good/feed/ 0