Sophie: gtkmm-documentation-3.24.0-1.mga7 noarch

gtkmm-documentation-3.24.0-1.mga7.noarch.rpm

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<th width="60%" align="center">Chapter 16. Dialogs</th>
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<div class="sect1">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="sec-font-chooser-dialog"></a>FontChooserDialog</h2></div></div></div>
<p>
The <code class="classname">FontChooserDialog</code> allows the user to choose a
font. The <code class="classname">FontButton</code> opens a font chooser dialog
when it is clicked.
</p>
<p><a class="ulink" href="http://developer.gnome.org/gtkmm/3.24/classGtk_1_1FontChooserDialog.html" target="_top">Reference</a></p>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="fontchooserdialog-example"></a>Example</h3></div></div></div>
<div class="figure">
<a name="figure-dialogs-fontchooserdialog"></a><p class="title"><b>Figure 16.4. FontChooserDialog</b></p>
<div class="figure-contents"><div class="screenshot"><div><img src="figures/dialogs_fontchooserdialog.png" alt="FontChooserDialog"></div></div></div>
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<br class="figure-break"><p><a class="ulink" href="http://git.gnome.org/browse/gtkmm-documentation/tree/examples/book/dialogs/fontchooserdialog?h=gtkmm-3-24" target="_top">Source Code</a></p>
<p>File: <code class="filename">examplewindow.h</code> (For use with gtkmm 3, not gtkmm 2)
</p>
<pre class="programlisting">
#ifndef GTKMM_EXAMPLEWINDOW_H
#define GTKMM_EXAMPLEWINDOW_H

#include &lt;gtkmm.h&gt;

class ExampleWindow : public Gtk::Window
{
public:
  ExampleWindow();
  virtual ~ExampleWindow();

protected:
  //Signal handlers:
  void on_font_button_font_set();
  void on_button_dialog_clicked();

  //Child widgets:
  Gtk::ButtonBox m_ButtonBox;
  Gtk::FontButton m_FontButton;
  Gtk::Button m_Button_Dialog;
};

#endif //GTKMM_EXAMPLEWINDOW_H
</pre>
<p>File: <code class="filename">main.cc</code> (For use with gtkmm 3, not gtkmm 2)
</p>
<pre class="programlisting">
#include "examplewindow.h"
#include &lt;gtkmm/application.h&gt;

int main(int argc, char *argv[])
{
  auto app = Gtk::Application::create(argc, argv, "org.gtkmm.example");

  ExampleWindow window;

  //Shows the window and returns when it is closed.
  return app-&gt;run(window);
}
</pre>
<p>File: <code class="filename">examplewindow.cc</code> (For use with gtkmm 3, not gtkmm 2)
</p>
<pre class="programlisting">
#include "examplewindow.h"
#include &lt;iostream&gt;

ExampleWindow::ExampleWindow()
: m_ButtonBox(Gtk::ORIENTATION_VERTICAL),
  m_FontButton("Sans 10"),
  m_Button_Dialog("Choose Font")
{
  set_title("Gtk::FontChooserDialog example");

  add(m_ButtonBox);

  m_ButtonBox.pack_start(m_FontButton);
  m_FontButton.set_use_font(true);
  m_FontButton.set_use_size(true);
  m_FontButton.signal_font_set().connect(sigc::mem_fun(*this,
    &amp;ExampleWindow::on_font_button_font_set) );

  m_ButtonBox.pack_start(m_Button_Dialog);
  m_Button_Dialog.signal_clicked().connect(sigc::mem_fun(*this,
    &amp;ExampleWindow::on_button_dialog_clicked) );
  show_all_children();
}

ExampleWindow::~ExampleWindow()
{
}

void ExampleWindow::on_font_button_font_set()
{
  Glib::ustring font_name = m_FontButton.get_font_name();
  std::cout &lt;&lt; "Font chosen: " &lt;&lt; font_name &lt;&lt; std::endl;
}

void ExampleWindow::on_button_dialog_clicked()
{
  Gtk::FontChooserDialog dialog("Please choose a font", *this);

  //Get the previously selected font name from the FontButton:
  dialog.set_font(m_FontButton.get_font_name());

  int result = dialog.run();

  //Handle the response:
  switch(result)
  {
    case Gtk::RESPONSE_OK:
    {
      Glib::ustring font_name = dialog.get_font();
      std::cout &lt;&lt; "Font chosen: " &lt;&lt; font_name &lt;&lt; std::endl;
      m_FontButton.set_font_name(font_name);
      break;
    }
    case Gtk::RESPONSE_CANCEL:
    {
      std::cout &lt;&lt; "Cancel clicked." &lt;&lt; std::endl;
      break;
    }
    default:
    {
      std::cout &lt;&lt; "Unexpected button clicked: " &lt;&lt; result &lt;&lt; std::endl;
      break;
    }
  }
}
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