come with me, on the way I'll explain.
Miojo Script
O pre-requisito é o notify-send, um utilitário de linha de comando do libnotify. No Ubuntu:
sudo aptitude install libnotify-bin
E aqui o script em si:
sleep 5m; notify-send "aviso" "tirar o miojo do fogo"
Pronto, depois de cinco minutos isso vai aparecer:
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Getting an Android app source
18 March, 2010 - 12:00 am
Tags: Android, branch, cmd, git, programming
Posted in english | No comments
Getting the Android’s AlarmClock application source from official repositories:
git clone git://android.git.kernel.org/platform/packages/apps/AlarmClock.git
To get the head version for an old platform like the 1.4 (codename donut), choose the correspondent branch using -o or –origin:
git clone git://android.git.kernel.org/platform/packages/apps/AlarmClock.git –origin donut
Getting enviroment information on Android
16 March, 2010 - 10:18 am
Tags: Android, Eclipse, Java, programming, who am i, whoami
Posted in english | 3 comments
This is a simple program I wrote called Who Am I that shows informations about the device which it is running. Which can be useful for developers and maybe advanced users.
Download:
WhoAmI.tar.bz2 – Eclipse project. It’s configured for Android platform 4 (1.6) but should work without problems in newer Android platform versions.
WhoAmI.apk – Application installation Android [...]
The Caps Lock Java Socket Server
27 February, 2010 - 9:39 pm
Tags: caps lock, Java, programming, socket, upcase
Posted in english | No comments
Here is a simple server for those who are starting studying sockets or just needs a simple socket server example for reuse while writing your own behavior.
Features:
A client should enter a string and the server would answer the same string, with each symbol in up case, when possible.
Default port at 8080.
One client at time.
No multi [...]
Beware the locale
22 February, 2010 - 5:16 pm
Tags: development, i18n, Java, JUnit, locale, programming, String, teste unitário, toString, unit testing
Posted in english | No comments
Today I was programming a toString method for a class widely used in a application, using the very useful String.format that provides a C’s like printf formatter.
@Override
public String toString() {
return String.format("VO[a: %.1f, b: %.1f, c: %.1f]", a, b, a+b);
}
%.1f means a float with one digit precision after the dot separator. The code [...]
Easily Sortable Date and Time Representation
20 January, 2010 - 10:55 pm
Tags: date, datetime, ISO 8601, Jochen Voss, Markus Kuhn, programming, Python, representation, sort, sorting, time
Posted in english | No comments
I was looking for a date and time representation useful for registering stock quotes in a simple plain file.
I found that the standard ISO 8601 is just the answer for this, it’s called “Data elements and interchange formats — Information interchange — Representation of dates and times”. Here is a example:
2010-01-20 22:14:38
There’s this good article from [...]
Java Font List
5 January, 2010 - 6:10 pm
Tags: AWT, fonts, Java, JVM, Larabie, Larabie Fonts, programming
Posted in english | Comments Off
Here’s a program that lists fonts available in your JVM. You can also set the environment variable JAVA_FONTS to specify the font directory.
import java.awt.GraphicsEnvironment;
public class ListFonts {
public static void main(String args[]){
GraphicsEnvironment e = GraphicsEnvironment.getLocalGraphicsEnvironment();
for(String font:e.getAvailableFontFamilyNames()){
System.out.println(font);
}
}
}
By using pipes you can count how many fonts you have:
java ListFonts|wc -l
On my Ubuntu machine here I got 556 because [...]
Python Fast XML Parsing
25 December, 2009 - 3:04 pm
Tags: dtd, expat, game, programming, pygame, Python, sax, schema, urllib, XML
Posted in english | 1 comment
Here is a useful tip on Python XML decoding.
I was extending xml.sax.ContentHandler class in a example to decode maps for a Pygame application when my connection went down and I noticed that the program stop working raising a exception regarded a call to urlib (a module for retrieve resources by url). I noticed that the [...]
OpenCV on Ubuntu
21 December, 2009 - 1:18 am
Tags: 9.10, image processing, instructions, intel, karmic koala, open computer vision library, opencv, ubuntu
Posted in english | No comments
Open Computer Vision Library or just OpenCV, is a cross-platform computer vision library focused on real-time image processing for video files or webcams.
You have two options to obtain the environment to develop on OpenCV. You can insert a new repository in your package manager or compile it by yourself.
For Ubuntu 9.10 Karmic Koala there’s this [...]
Pygame: Running Orcs
11 December, 2009 - 7:47 am
Tags: game, orc, Pixelart, programming, pygame, Python
Posted in english | No comments
Here is a Pygame Sprite animation using the approach presented by Joe Wreschnig and Nicolas Crovatti. It’s not yet exactly what I need but is very suitable.
import pygame, random
from pygame.locals import *
class Char(pygame.sprite.Sprite):
x,y = (100,0)
def __init__(self, img, frames=1, modes=1, w=32, h=32, fps=3):
pygame.sprite.Sprite.__init__(self)
original_width, original_height = img.get_size()
self._w = w
self._h = h
self._framelist = []
for i in xrange(int(original_width/w)):
self._framelist.append(img.subsurface((i*w,0,w,h)))
self.image = [...]
OpenCV: adding two images
8 December, 2009 - 1:55 am
Tags: C, code, Computer Vision, cvadd, opencv, programming, surfer, universe, wikimedia
Posted in english | No comments
This is a very simple example of how to open two images and display them added.
I got two pictures at project Commons from Wikimedia that were highlighted on Featured Pictures. I did a crop on both to have the same size, as I’m trying to make this example as simple as possible.
The first one is [...]
28 January, 2010 - 8:30 am
Valeu! Te mando uma dica para parar os terminais de 3 a 6, não é mais no /etc/event.d
sudo sed -i ‘/ACTIVE_CONSOLES/s/1-6/1-2/g’ /etc/default/console-setup