View source for Development/Tutorials/KCmdLineArgs (ko)



{{TutorialBrowser|

series=Beginner Tutorial|

name=커맨드 라인 인자 (Under construction [[User:milliams]])|

pre=[[Development/Tutorials/Saving and loading (ko)|Tutorial 4 - 로드하기와 저장하기]]|

next=[[Development/Tutorials/###|Tutorial 6 - ###]] (TODO [[User:milliams]])| 

reading={{class|KCmdLineArgs}} {{class|KCmdLineOptions}}
}}

==개요==

이제 우리는 파일을 열고, 저장하는 텍스트 에디터를 갖는다. 우리는 컴맨드 라인 인자로부터 또는 Dolphin에서 ''~로 열기''를 사용하여 파일을 여는 것을 가능한 데스크탑 어플리케이션 처럼 동작하도록 만들 것이다.

Now that we have a text editor which can open and save files. We will now make the editor act more like a desktop application by enabling it to open files from command line arguments or even using ''Open with'' from within Dolphin.

[[image:introtokdetutorial5.png|frame|center]]

== 코드 ==

===main.cpp===
<syntaxhighlight lang="cpp-qt" line>
#include <KApplication>
#include <KAboutData>
#include <KCmdLineArgs>
#include <KUrl> //new
 
#include "mainwindow.h"
 
int main (int argc, char *argv[])
{
  KAboutData aboutData( "tutorial5", "tutorial5",
      ki18n("Tutorial 5"), "1.0",
      ki18n("A simple text area which can load and save."),
      KAboutData::License_GPL,
      ki18n("Copyright (c) 2007 Developer") );
  KCmdLineArgs::init( argc, argv, &aboutData );

  KCmdLineOptions options; //new
  options.add("+[file]", ki18n("Document to open")); //new
  KCmdLineArgs::addCmdLineOptions(options); //new

  KApplication app;
 
  MainWindow* window = new MainWindow();
  window->show();

  KCmdLineArgs *args = KCmdLineArgs::parsedArgs(); //new
  if(args->count()) //new
  {
    window->openFile(args->url(0).url()); //new
  }

  return app.exec();
}
</syntaxhighlight>

===mainwindow.h===
<syntaxhighlight lang="cpp-qt" line>
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <KXmlGuiWindow>
#include <KTextEdit>
 
class MainWindow : public KXmlGuiWindow
{
  Q_OBJECT
  
  public:
    MainWindow(QWidget *parent=0);
    void openFile(const QString &inputFileName); //new
  
  private:
    KTextEdit* textArea;
    void setupActions();
    QString fileName;
 
  private slots:
    void newFile();
    void openFile();
    void saveFile();
    void saveFileAs();
    void saveFileAs(const QString &outputFileName);
};
 
#endif
</syntaxhighlight>

===mainwindow.cpp===
<syntaxhighlight lang="cpp-qt" line>
#include "mainwindow.h"
 
#include <KApplication>
#include <KAction>
#include <KLocale>
#include <KActionCollection>
#include <KStandardAction>
#include <KFileDialog>
#include <KMessageBox>
#include <KIO/NetAccess>
#include <KSaveFile>
#include <QTextStream>
 
MainWindow::MainWindow(QWidget *parent)
    : KXmlGuiWindow(parent),
      fileName(QString())
{
  textArea = new KTextEdit;
  setCentralWidget(textArea);
 
  setupActions();
}
 
void MainWindow::setupActions()
{
  KAction* clearAction = new KAction(this);
  clearAction->setText(i18n("Clear"));
  clearAction->setIcon(KIcon("document-new"));
  clearAction->setShortcut(Qt::CTRL + Qt::Key_W);
  actionCollection()->addAction("clear", clearAction);
  connect(clearAction, SIGNAL(triggered(bool)),
          textArea, SLOT(clear()));
 
  KStandardAction::quit(kapp, SLOT(quit()),
                        actionCollection());
 
  KStandardAction::open(this, SLOT(openFile()),
                        actionCollection());
 
  KStandardAction::save(this, SLOT(saveFile()),
                        actionCollection());
 
  KStandardAction::saveAs(this, SLOT(saveFileAs()),
                        actionCollection());
 
  KStandardAction::openNew(this, SLOT(newFile()),
                        actionCollection());
 
  setupGUI();
}
 
void MainWindow::newFile()
{
  fileName.clear();
  textArea->clear();
}
 
void MainWindow::saveFileAs(const QString &outputFileName)
{
  KSaveFile file(outputFileName);
  file.open();
  
  QByteArray outputByteArray;
  outputByteArray.append(textArea->toPlainText());
  file.write(outputByteArray);
  file.finalize();
  file.close();
  
  fileName = outputFileName;
}
 
void MainWindow::saveFileAs()
{
  saveFileAs(KFileDialog::getSaveFileName());
}
 
void MainWindow::saveFile()
{
  if(!fileName.isEmpty())
  {
    saveFileAs(fileName);
  }
  else
  {
    saveFileAs();
  }
}
 
void MainWindow::openFile() //changed
{
  openFile(KFileDialog::getOpenFileName());
}

void MainWindow::openFile(const QString &inputFileName) //new
{
  QString tmpFile;
  if(KIO::NetAccess::download(inputFileName, tmpFile, 
         this))
  {
    QFile file(tmpFile);
    file.open(QIODevice::ReadOnly);
    textArea->setPlainText(QTextStream(&file).readAll());
    fileName = inputFileName;
 
    KIO::NetAccess::removeTempFile(tmpFile);
  }
  else
  {
    KMessageBox::error(this, 
        KIO::NetAccess::lastErrorString());
  }
}
</syntaxhighlight>

===tutorial4ui.rc===
<syntaxhighlight lang="xml" line>
<?xml version="1.0" encoding="UTF-8"?>
<gui name="tutorial5"
     version="1"
     xmlns="http://www.kde.org/standards/kxmlgui/1.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.kde.org/standards/kxmlgui/1.0
                         http://www.kde.org/standards/kxmlgui/1.0/kxmlgui.xsd" >

  <MenuBar>
    <Menu name="file" >
      <Action name="clear" />
    </Menu>
  </MenuBar>

  <ToolBar name="mainToolBar" >
    <text>Main Toolbar</text>
    <Action name="clear" />
  </ToolBar>

</gui>
</syntaxhighlight>
이것은 <tt>tutorial''x''</tt>가 이제는 <tt>tutorial5</tt>라는 것을 제외하고는 마지막 두 튜트리얼의 <tt>tutorial''x''ui.rc</tt>와 동일하다.
:''This is identical to the <tt>tutorial''x''ui.rc</tt> from the last two tutorials except <tt>tutorial''x''</tt> is now <tt>tutorial5</tt>.''

==설명==

===mainwindow.h===

여기서 우리는 아무것도 하지 않지만, <tt>QString</tt>을 인자로 갖는 <tt>openFile</tt>함수를 추가한다.

Here we have done nothing but add a new <tt>openFile</tt> function which takes a <tt>QString</tt>
<syntaxhighlight lang="cpp-qt">
void openFile(const QString &inputFileName);
</syntaxhighlight>

===mainwindow.cpp===

여기에는 단지 재배열 되었을 뿐, 새로 추가된 코드가 없다. 모든 것은 <tt>void openFile()</tt>에서 <tt>KFileDialog::getOpenFileName()</tt>를 호출하는 것을 제외하고, <tt>void openFile(const QString &inputFileName)</tt>으로 이동하였다.

There's no new code here, only rearranging. Everything from <tt>void openFile()</tt> has been moved into <tt>void openFile(const QString &inputFileName)</tt> except the call to <tt>KFileDialog::getOpenFileName()</tt>.


만약 다이얼로그를 보여주기를 원하다면, 우리는 <tt>openFile()</tt> 을 호출할 수 있으며, 파일의 이름을 이미 알고 있다면, <tt>openFile(QString)</tt>를 호출할 수 있다.

This way, we can call <tt>openFile()</tt> if we want to display a dialog, or we can call <tt>openFile(QString)</tt> if we know the name of the file already.

===main.cpp===

이것이 {{class|KCmdLineArgs}} 마술이 일어나는 곳이다.

This is where all the {{class|KCmdLineArgs}} magic happens.

==Make, Install And Run==

===CMakeLists.txt===
<syntaxhighlight lang="ini" line>
project(tutorial5)
 
find_package(KDE4 REQUIRED)
include_directories( ${KDE4_INCLUDES} )
 
set(tutorial5_SRCS 
  main.cpp
  mainwindow.cpp
)
 
kde4_add_executable(tutorial5 ${tutorial5_SRCS})
 
target_link_libraries(tutorial5 ${KDE4_KDEUI_LIBS}
                                ${KDE4_KIO_LIBS})
 
install(TARGETS tutorial5 DESTINATION ${BIN_INSTALL_DIR})
install( FILES tutorial5ui.rc 
         DESTINATION  ${DATA_INSTALL_DIR}/tutorial5 )
</syntaxhighlight>

이 파일로 튜트리얼은 빌드 가능하며, 튜트리얼 3와 4와 같은 방식으로 동작한다. 좀 더 많은 정보를 위해서는 튜트리얼 3을 보라.

With this file, the tutorial can built and run in the same way as tutorial 3 and 4. For more information, see tutorial 3.

 mkdir build && cd build
 cmake .. -DCMAKE_INSTALL_PREFIX=$HOME
 make install
 $HOME/bin/tutorial5

==나아가기==
Now you can move on to the ### (TODO [[User:milliams]]) tutorial.

[[Category:C++]]