<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="progressbar.py" xml:lang="ko">

  <info>

    <title type="text">ProgressBar (Python)</title>

    <link type="guide" xref="beginner.py#display-widgets"/>

    <link type="next" xref="spinbutton.py"/>    

    <revision version="0.2" date="2012-06-12" status="draft"/>

    <credit type="author copyright">

      <name>Marta Maria Casetti</name>

      <email its:translate="no">mmcasetti@gmail.com</email>

      <years>2012</years>

    </credit>

    <desc>진행 상황을 눈으로 알 수 있게 나타냅니다.</desc>

    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">

      <mal:name>조성호</mal:name>

      <mal:email>shcho@gnome.org</mal:email>

      <mal:years>2017</mal:years>

    </mal:credit>

  </info>

  <title>ProgressBar</title>

  <media type="video" mime="application/ogv" src="media/progressbar.ogv">

    <tt:tt xmlns:tt="http://www.w3.org/ns/ttml">

      <tt:body>

        <tt:div begin="0s" end="6s">

          <tt:p>아무 키나 눌러서 ProgressBar 동작을 멈추거나 시작합니다.</tt:p>

        </tt:div>

      </tt:body>

    </tt:tt>

  </media>

  
이 ProgressBar는 어떤 키든 눌렀을 때 동작을 멈추거나 시작합니다.

  <links type="section"/>

  <section id="code">

  <title>예제 결과를 만드는 코드</title>

  from gi.repository import GLib

from gi.repository import Gtk

import sys

class MyWindow(Gtk.ApplicationWindow):

    # a window

    def __init__(self, app):

        Gtk.Window.__init__(self, title="ProgressBar Example", application=app)

        self.set_default_size(220, 20)

        # a progressbar

        self.progress_bar = Gtk.ProgressBar()

        # add the progressbar to the window

        self.add(self.progress_bar)

        # the method self.pulse is called each 100 milliseconds

        # and self.source_id is set to be the ID of the event source

        # (i.e. the bar changes position every 100 milliseconds)

        self.source_id = GLib.timeout_add(100, self.pulse)

    # event handler

    # any signal from the keyboard controls if the progressbar stops/starts

    def do_key_press_event(self, event):

        # if the progressbar has been stopped (therefore source_id == 0 - see

        # "else" below), turn it back on

        if (self.source_id == 0):

            self.source_id = GLib.timeout_add(100, self.pulse)

        # if the bar is moving, remove the source with the ID of source_id

        # from the main context (stop the bar) and set the source_id to 0

        else:

            GLib.source_remove(self.source_id)

            self.source_id = 0

        # stop the signal emission

        return True

    # source function

    # the progressbar is in "activity mode" when this method is called

    def pulse(self):

        self.progress_bar.pulse()

        # call the function again

        return True

class MyApplication(Gtk.Application):

    def __init__(self):

        Gtk.Application.__init__(self)

    def do_activate(self):

        win = MyWindow(self)

        win.show_all()

    def do_startup(self):

        Gtk.Application.do_startup(self)

app = MyApplication()

exit_status = app.run(sys.argv)

sys.exit(exit_status)

  </section>

  <section id="methods">

  <title>ProgressBar 위젯에 쓸만한 메서드</title>

  <list>

    <item>
표시줄을 앞뒤로 왔다갔다 하게 하는 pulse() 대신, ProgressBar를 표시줄 비율(0.0과 1.0 값도 해당하는 사이 float 값)만큼 완료 의미로 "채워 넣는"다면, set_fraction(fraction)을 사용하십시오.
</item>

    <item>
텍스트를 설정하고 보여주려면 (표시줄에 겹쳐 나타남) set_text("text")와 set_show_text(True)를 사용하십시오. 텍스트를 설정하지 않았고 set_show_text(True) 함수를 호출하면 나타나는 텍스트는 작업 완료 백분율입니다.
</item>

  </list>

  </section>

  <section id="references">

  <title>API 참고서</title>

  
이 예제는 다음 참고자료가 필요합니다:

  <list>

    <item>
<link href="http://developer.gnome.org/gtk3/unstable/GtkProgressBar.html">GtkProgressBar</link>
</item>

    <item>
<link href="http://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html">GLib - 메인 이벤트 루프</link>
</item>

    <item>
<link href="http://developer.gnome.org/gdk/stable/gdk-Keyboard-Handling">Gdk - 키 값</link>
</item>

  </list>

  </section>

</page>