Difference between revisions of "Slicer4:Internationalization of Slicer"

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| text  = [https://github.com/Slicer/Slicer/wiki/I18N This page has been moved to GitHub.]
This pages contains notes on source code additions and modifications of different modules within Slicer for the internationalization purpose.
| background-color = 8FBC8F }}
=QT-based Internationalization=
Internationalization is well supported in QT. A lot of modules of Slicer are developed on QT. This has set a good ground for the internationalization of Slicer.
*basic idea
In Qt, tr() is one of the static public members of QObject class, which returns a translated version of input sourceText.
    QString QObject::tr ( const char * sourceText, const char * disambiguation = 0, int n = -1 ) [static]
tr() will search the translation in a so-called translation file. If nothing is found, then the sourceText instead of the translated version will be displayed directly.
*translation file template
The following is an example of the translation file, from English to Chinese.
    <?xml version="1.0" encoding="utf-8"?>
    <TS version="2.0" language="zh_CN">
        <source>Import Scene</source>
        <source>Add Data</source>
In the above example, all the texts are within the scope of qSlicerMainWindow class. That's why 'qSlicerMainWindo' occurs in section 'name'.
*The following modifications are are needed:
In file \Slicer4\Base\QTCore\qSlicerCoreApplication.h, add the following line:
    #include <QTranslator>
In file \Slicer4\Applications\SlicerQT\main.cxx (around line#230), add the following lines:
    static QTranslator* translator;
    if (translator != NULL)
        delete translator;
        translator = NULL;
    QString langCode= argv[1];
    translator = new QTranslator;
    QString qmFilename = "lang_" + langCode;
    if (translator->load(qmFilename))
*To be continued
=Scripted Module=
Some modules are implemented in Python. Endoscopy is one of the typical examples. In endoscopy.py, if we change the code in line#10
    parent.titel = “Endoscopy”
    parent.title = slicer.app.translate(self.__class__.__name__, "Endoscopy")
then "Endoscopy" can be shown in other languages.Similarily, other displayable strings can be handled in the same way.
=To be continued=

Latest revision as of 12:53, 28 September 2021

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