Archive for March 2012

No hay nada mas poderoso que una idea a la que le ha llegado su tiempo

March 29th, 2012

First they ignore you, then they laugh at you, then they fight you, then you win.

Mohandas Karamchand Gandhi

Despite opposition, truth happens

Default to open: The story of open source and Red Hat

Community, Personal , No response

[Actualizado] Meltemi es real

March 21st, 2012

Hasta ahora, lo poco que se sabia sobre Meltemi, eran simples rumores, basados mas que nada en especulaciones, pero hoy gracias a @kypeli que encontró un par de referencias a Meltemi en código de Nokia, se puede afirmar que Meltemi, paso del terreno de las especulaciones, al terreno de la realidad, la primera referencia esta en Pastebin en donde aparece un link a la Wiki de Meltemi en la intranet de Nokia, en una conversación de un empleado de Nokia en lo que parece ser un script usado por el instalador de una versión interna de las herramientas de desarrollo de Meltemi.

http://wikis.in.nokia.com/Meltemi/Developer

Nokia has confirmed the existence of Meltemi. Kinda. http://t.co/BNx2g2gF
@kypeli
Johan Paul

La segunda prueba se encuentra en los repositorios de Qt Sensors, en donde en la cabecera de archivo se puede ver los siguiente:

qirproximitysensor.cpp at The Qt Sensors repository

And Nokia confirmed Meltemi will run Qt. Kinda. http://t.co/1fmWTeWF
@kypeli
Johan Paul

Estas pruebas no hacen mas que confirmar que Meltemi existe, que esta basado en Linux y que Qt es uno de sus pilares, ahora solo resta saber cuando y en que producto se presentara, sera cuestión de seguir esperando, pero viendo el buen trabajo que se hizo con MeeGo/Harmattan, creo que la espera aunque dura, valdrá la pena.

Actualización – 22/03/2012

Las pruebas de la existencia de Meltemi al parecer no duraron mucho en publico, tanto el contenido de Pastebin como el archivo en el repo de Qt Sensors ha sido eliminado, afortunadamente tengo una copia de cada uno de ellos, lo cuales pueden ver a continuación:

Pastebin
From c562d53d77866767beb242df2eee507c7b8bcaf7 Mon Sep 17 00:00:00 2001
From: ------ --------- <------.---------@nokia.com>
Date: Tue, 24 Jan 2012 19:11:39 +0100
Subject: [PATCH] Cleanup package dependencies

---
 mt-make-sysroot |   35 +++--------------------------------
 1 files changed, 3 insertions(+), 32 deletions(-)

diff --git a/mt-make-sysroot b/mt-make-sysroot
index 688bf39..26011d7 100755
--- a/mt-make-sysroot
+++ b/mt-make-sysroot
@@ -166,24 +166,6 @@ function find_executable()
   return 0
 }
 
-function test_object()
-# Usage:
-#
-#   test_object <test> <object> [message]
-#
-# Run <test> (-d/-f/-e/-x/...) for <object>
-# on success return 0
-# on failure print message if supplied and return 1
-{
-  if [ ! "${1}" "${2}" ] ; then
-    if [ -n "${3}" ] ; then
-      echo "${3}"
-    fi
-    return 1
-  fi
-  return 0
-}
-
 function test_package()
 # Usage:
 #
@@ -236,17 +218,8 @@ function check_environment_ubuntu()
   test_package 'mt-dev-env' 'This machine was not setup to run the desktop emulator, yet. Visit http://wikis.in.nokia.com/Meltemi/Developer and do check the prerequisits section' || \
     tool_check=0
 
-  find_executable 'rpm' 'rpm not found. Do "sudo apt-get install rpm"' || \
-    tool_check=0
-
-  #python
-  test_object '-d' '/usr/share/pyshared/M2Crypto' 'python-m2crypto not found. Do "sudo apt-get install python-m2crypto"' || \
-    tool_check=0
-  test_object '-d' '/usr/share/pyshared/urlgrabber' 'python-urlgrabber not found. Do "sudo apt-get install python-urlgrabber"' || \
+  find_executable 'mtz' 'mtz not found. Do "sudo apt-get install mtz"' || \
     tool_check=0
-  test_object '-f' '/usr/lib/build/debtransform' \
-    'python rpm helper module not found. Add the open suse repository to your sources.list and do "sudo apt-get install build"' || \
-      tool_check=0
 
   if [[ $tool_check == 0 ]] ; then
     exit 1
@@ -257,7 +230,7 @@ function check_environment_opensuse()
 {
   local tool_check=1
 
-  find_executable 'rpm' 'rpm not found.' || \
+  find_executable 'mtz' 'mtz not found.' || \
     tool_check=0
 
   if [[ $tool_check == 0 ]] ; then
@@ -269,7 +242,7 @@ function check_environment_redhat()
 {
   local tool_check=1
 
-  find_executable 'rpm' 'rpm not found.' || \
+  find_executable 'mtz' 'mtz not found.' || \
     tool_check=0
 
   if [[ $tool_check == 0 ]] ; then
@@ -595,8 +568,6 @@ init_obs
 function mtz_wrapper()
 {
   arch=$1
-  test_package 'mtz' 'mtz not found, trying to install' || \
-    "${SUDO}" apt-get install mtz || print_error "Installation of mtz failed"
 
   #fix the arch name, since mtz needs to know the real ones used on the reposerver
   arch=`echo $arch | sed -e "s/armv7el/armv7hl/"`
-- 
1.7.4.1
qirproximitysensor.cpp
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtSensors middleware for Meltemi.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include 
#include "qirproximitysensor_p.h"
IMPLEMENT_READING(QIRProximityReading)
/*
    \class QIRProximityReading
    \ingroup sensors_reading
    \inmodule QtSensors
    \brief The QIRProximityReading class holds readings from the IR proximity sensor.
    The IR (infra-red) proximity sensor detects proximity by beaming out infra-red light
    and detecting how much of the light returns.
    The biggest limitation of this technology is that there is no reliable way to turn the
    reflectance values into distances unless both the item being detected and the ambient
    conditions are known.
    \section2 QIRProximityReading Units
    The sensor reports reflectance as a percentage. That is, 0 indicates nothing was detected
    within the range of the sensor and 100 indicates the infra-red signal returned at the full
    power level that it was sent at.
*/
/*
    \property QIRProximityReading::reflectance
    \brief Holds the reflectance value.
    The reflectance is a percentage (from 0 to 100) indicating how much of the transmitted
    infra-red light was returned.
    \sa {QIRProximityReading Units}
*/
qreal QIRProximityReading::reflectance() const
{
    return d->reflectance;
}
/*
    Sets the reflectance value to \a reflectance.
*/
void QIRProximityReading::setReflectance(qreal reflectance)
{
    d->reflectance = reflectance;
}
// =====================================================================

/*
    \class QIRProximityFilter
    \ingroup sensors_filter
    \inmodule QtSensors
    \brief The QIRProximityFilter class is a convenience wrapper around QSensorFilter.
    The only difference is that the filter() method features a pointer to QIRProximityReading
    instead of QSensorReading.
*/

/*
    \fn QIRProximityFilter::filter(QIRProximityReading *reading)
    Called when \a reading changes. Returns false to prevent the reading from propagating.
    \sa QSensorFilter::filter()
*/

char const * const QIRProximitySensor::type("QIRProximitySensor");

/*
    \class QIRProximitySensor
    \ingroup sensors_type
    \inmodule QtSensors
    \brief The QIRProximitySensor class is a convenience wrapper around QSensor.
    The only behavioural difference is that this class sets the type properly.
    This class also features a reading() function that returns a QIRProximityReading instead of a QSensorReading.
    For details about how the sensor works, see \l QIRProximityReading.
    \sa QIRProximityReading
*/

/*
    \fn QIRProximitySensor::QIRProximitySensor(QObject *parent)
    Construct the sensor as a child of \a parent.
*/

/*
    \fn QIRProximitySensor::~QIRProximitySensor()
    Destroy the sensor. Stops the sensor if it has not already been stopped.
*/

/*
    \fn QIRProximitySensor::reading() const
    Returns the reading class for this sensor.
    \sa QSensor::reading()

*/

#include "moc_qirproximitysensor.cpp"
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Spark en CeBIT 2012

March 8th, 2012

Por estos días en la CeBIT en los stands de Xompu y KDE se esta exhibiendo la Spark, en el siguiente video pueden ver una entrevista a Aaron Seigo en donde hace un pequeño paseo por Plasma Active y nos cuenta de los desafíos a los que se están enfrentando en el proyecto y algunos de los planes que se están evaluando para el futuro, como por ejemplo una versión de 10 pulgadas de la Spark, entre otras cosas.

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