Development/Tutorials (pt BR)

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Development/Tutorials


Tutoriais são a maneira mais rápida de encontrar o que o KDE pode oferecer à você, e como fazê-lo. Abaixo encontra-se uma lista dos tutoriais atualmente disponíveis para KDE4. Material para KDE3 e KDE2 está disponível no final da página.

Introdução à programação para KDE 4

Você está interessado em escrever aplicações para KDE 4? Esta séria de tutoriais é completamente voltada a nova programação para o KDE.

Hello World
Uma introdução premilinar aos princípios da programação do KDE4
Criando a janela principal
Este tutorial mostra à você a mágica da coisa mais importante de uma aplicação: a janela principal, ou "main window".
Usando KActions
Como adicionar ações aos menus e barra de ferramentas.

Princípios

Migrando sua aplicação
Ajuda migrando aplicações do Qt3/KDE3 para Qt4/KDE4
Introdução ao CMake
Como usar o sistema de contrução CMake usado pelo KDE4.
Erros comuns de programação
Vários erros comuns cometidos durante o desenvolvimento de aplicações Qt e KDE e como evitá-los.
Usando Qt Designer para construir interfaces de usuário
Como criar arquivos UI com designer, e como integrá-los em um programa KDE.
Usando as opções da linha de comando
Processing and accessing command-line arguments the easy way with KDE's command line arguments classes.

Testando e Depurando

Depurando sua aplicação
Dicas, ferramentas e técnicas para usar enquanto depura sua aplicação KDE.
Escrevendo Unittests para Qt4 e KDE4 com QTestLib (Original link)
Tutorial por Brad Hards que explica como escrever testes de unidade usando o framework QTestLib. Ele é apresentado como um exemplo que deu base ao tutorial, e está ainda em desenvolvimento.
Maneiras semi-automáticas de detectar erros no código
Técnicas que você pode usar para detectar erros no código KDE.

Gerenciando dados de configuração com KConfig

Introdução ao KConfig
Uma visão geral das classes KConfig e como usá-las no código da sua aplicação.
Usando KConfig XT
Tutorial de como usar de forma eficiente o framework KConfig XT.
Atualizando arquivos do KConfig
Tutorial de como escrever um script de atualização que mantém as mudanças no arquivo de configuração da sua aplicação sincronizadas com arquivo de configuração já existente do usuário

Serviços: Aplicações e Plugins

Introduction to the Services Framework
An overview of the services framework in KDE and what it provides the application developer. Covers the system configuration cache (SyCoCa), the source data files and what the indexed information can be used for.
Finding Services Using Trader Queries
How to find services, such as plugins or mimetypes, that are indexed in the SyCoCa using Trader Query Syntax
Creating and Loading Plugins Using KService
Learn how to define custom plugin types, find installed plugins (including 3rd party plugins) and load them in an easy and portable fashion using KService.

Localization

Introduction To Unicode
An introduction to what Unicode is as well as how to handle Unicode data in KDE applications.
Writing Applications With Localization In Mind
This tutorial covers what localization is, why it's important and how to ensure your application is ready to be localized. A must read for all application developers.
Avoiding Common Localization Pitfalls
There are several common mistakes that prevent applications from being properly localized. Find out what they are and how to easily avoid them in this tutorial.
Building KDE's Localization Module
Building and installing language support from KDE's localization (l10n) module is a good idea for those working on applications in the main KDE repository. Doing so will allow you to test your application in another language and spot problem areas. Learn how to do just that in this tutorial.
Incorporating i18n Into the Build System
Once your application is ready to be localized, the next step is to ensure that translation files are built automatically and kept up to date. This tutorial covers the necessary CMakeFiles.txt additions as well the process of distributing the resulting message catalogs with your application.
Common i18n Challenges and Solutions
This tutorial covers challenges that you may eventually run into such as translating handbooks and other data that exists outside of the source code, merging and handling obsolete .po files, dealing with freezes, coding in languages other than English and creating independent releases of or moving applications between KDE modules.
Semantic Markup of Messages
To ensure consistent presentation and more meaningful representations of messages in applications, semantic markup can be applied to messages marked for translation using the KUIT system. This tutorial describes how this system works.
Automated i18n Code Checking
The Krazy code checker scans KDE's code and reports common i18n mistakes.

Documentation

API Documentation
This tutorial explains how to document your APIs properly.
Man Pages
Writing and Generating Reference Manual Pages.

Application Automation and Scripting

D-Bus

Introduction to D-Bus
A straight-forward introduction to the core concepts in D-Bus from an application developer's perspective, this tutorial covers what D-Bus is and how it can be used by applications.
Accessing D-Bus Interfaces
A step-by-step guide to calling D-Bus methods and connecting to D-Bus signals using QtDBus.
Intermediate D-Bus
Tips to make use of QtDBus when faced with problematic real-world interfaces.
Creating D-Bus Interfaces
Learn how to expose functionality in your application by creating and using custom D-Bus interfaces. Covers generating the XML descriptions, instantiating interfaces at run time and setting up the build system with CMake.
D-Bus Autostart Services
Turn your application into a D-Bus autostart service with this tutorial. This D-Bus feature, also known as "D-Bus service activation", will ensure that even when your application isn't running that D-Bus calls made to it will work by relying on the D-Bus daemon itself to start your app if and when needed.
Porting from DCOP to D-Bus
Port your applications from DCOP to D-Bus with this handy guide.

Konqueror

Creating Konqueror Service Menus
This tutorial shows you how to create mimetype-specific actions in Konqueror's context menu (aka "servicemenus").

Kross

Introduction to Kross
An introduction to the Kross Scripting Framework.
Hello World
A first application with working kross code.
Scripts as Plugins with Kross
This tutorial provides a step-by-step introduction how to integrate scripts as plugins into a KDE application.

KOffice

Development/Tutorials/KOffice Overview
This document shows an overview of the different KOffice plugin types and tells you what each of their purpose and strengths are. If you are new with KOffice plugins, this is the place to start.
Creating KOffice Flake Plugins
This tutorial shows you how you can build a plugin for KOffice applications to allow you embed content in ODF documents using Flake.
KWord Scripting
This tutorial shows how to script KWord with Python, Ruby or JavaScript using Kross.
KSpread Scripting
This tutorial shows how to script KSpread with Python, Ruby or JavaScript using Kross.
Krita Scripting
This tutorial shows how to script Krita with Python, Ruby or JavaScript using Kross.

SuperKaramba

SuperKaramba Tutorial
This tutorial provides an overview of SuperKaramba, theme files and scripting with Python, Ruby and JavaScript.

Search and Metadata

Strigi

Writing file analyzers
File analyzers extract data from files to display in the file dialogs and file managers. The data gathered this way is also used to search for files. KDE4 allows the use of multiple analyzers per file type. This tutorial describes how you can write new analyzers.

Nepomuk

Nepomuk first steps
Nepomuk is the KDE library which provides easy access to metadata in the Nepomuk-KDE system. Learn how to make your application create and read metadata using the Nepomuk system.

Hardware Awareness (Solid)

Introduction to Solid
An introduction to using the Solid hardware discovery and interaction system in KDE applications.
Accessing Network Information
How to use the Solid system to get information about the network

Multimedia (Phonon)

Phonon
How to start with the multimedia API

Plasma

Getting Started With Plasmoids
Creating your first plasmoid in C++ with SVG background, icon and text


Kate / Kwrite

Getting Started With Plugins
Creating your first plugin

Printing

Hello World
Introduction to the KDE printing system
TODO Print Dialog
Using the KDE print dialog

Get Hot New Stuff

Introduction to Get Hot New Stuff
An introduction to the developer-friendly network update system that allows KDE applications to fetch new application data at runtime in a user friendly manner.
KNewStuff Secure (Original Link)
Tutorial showing how to share resources in a secured way (KDE 3.4 and later). By András Mantia <amantia@kde.org>.

Rapid Application Development

Python

101 Introduction to signals and slots
A simple introduction to Qt's signal and slot architecture.

Ruby

KDE Ruby Korundum tutorial
A ruby version of Antonio Larrosa Jiménez's KDE tutorial by Richard Dale. See the Ruby Developers Corner for Qt tutorials and other info.
Qt4 Ruby Tutorial
Trolltech's fabulous introductory tutorial to Qt, translated to Ruby.

Shell

Shell Scripting with KDE dialogs (Original Link)
Tutorial by Brad Hards that describes how to use KDE dialogs in shell scripts with kdialog. It is presented as an example based tutorial.

Other tutorials

Using the KDE Games Library

KStandardGameAction
Using libkdegames to make your game fit the kdegames standard
Highscores
Implementing a simple highscore table into your game
Theme Selector
Using the libkdegames theme selection dialog

2D Plotting (KPlotWidget)

Using the KDE data-plotting widget
This tutorial introduces KPlotWidget, which is used for 2-D data plotting. It includes information on simple usage of the widget (including adding and modifying data sets, and customizing the plot axes and labels), and advanced customization (including extending the widget through sub-classing).

Spelling and Grammar Checking (Sonnet)

Adding spell-checking or grammar-checking to KDE applications
This tutorial introduces Sonnet and how one may use it to add language correction to your KDE application. Sonnet's auxiliary features shall be described in a separate tutorial.

Pixmap cache (KPixmapCache)

Using the KDE pixmap cache
This tutorial shows how to use KPixmapCache to cache e.g. pixmaps generated from SVGs or some data.

KDE2 and KDE3 Materials

KDE3 Tutorials
These tutorials cover topics related to KDE3.
KDE2 Tutorials
These tutorials cover topics related to KDE2.

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