Source Code

File: examplewindow.h

#ifndef GTKMM_EXAMPLE_RANGEWIDGETS_H
#define GTKMM_EXAMPLE_RANGEWIDGETS_H

#include <gtkmm.h>

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

protected:
  //Signal handlers:
  virtual void on_checkbutton_toggled();
  virtual void on_menu_position(Gtk::PositionType type);
  virtual void on_menu_policy(Gtk::UpdateType type);
  virtual void on_adjustment1_value_changed();
  virtual void on_adjustment2_value_changed();
  virtual void on_button_quit();

  //Child widgets:
  Gtk::VBox m_VBox_Top, m_VBox2, m_VBox_HScale;
  Gtk::HBox m_HBox_Scales, m_HBox_Digits, m_HBox_PageSize;

  Gtk::Adjustment m_adjustment, m_adjustment_digits, m_adjustment_pagesize;

  Gtk::VScale m_VScale;
  Gtk::HScale m_HScale, m_Scale_Digits, m_Scale_PageSize;

  Gtk::HSeparator m_Separator;

  Gtk::CheckButton m_CheckButton;

  Gtk::HScrollbar m_Scrollbar;

  Gtk::Menu m_Menu_Position, m_Menu_Policy;

  Gtk::Button m_Button_Quit;
};

#endif //GTKMM_EXAMPLE_RANGEWIDGETS_H

File: labeledoptionmenu.h

#ifndef GTKMM_EXAMPLE_RANGEWIDGETS_LABELEDOPTIONMENU_H
#define GTKMM_EXAMPLE_RANGEWIDGETS_LABELEDOPTIONMENU_H

#include <gtkmm.h>

class LabeledOptionMenu : public Gtk::HBox
{
public:
  LabeledOptionMenu(const Glib::ustring& menu_title, Gtk::Menu& menu,
    bool homogeneous = false, int spacing = 10);

protected:
    Gtk::Label m_label;
    Gtk::OptionMenu m_OptionMenu;
    Gtk::Menu* m_pMenu;
};
#endif //GTKMM_EXAMPLE_RANGEWIDGETS_LABELEDOPTIONMENU_H

File: examplewindow.cc

#include "examplewindow.h"
#include "labeledoptionmenu.h"
#include <iostream>

ExampleWindow::ExampleWindow()
:
  m_VBox2(false, 20),
  m_VBox_HScale(false, 10),
  m_HBox_Scales(false, 10),
  m_HBox_Digits(false, 10),
  m_HBox_PageSize(false, 10),

  // value, lower, upper, step_increment, page_increment, page_size
  // note that the page_size value only makes a difference for
  // scrollbar widgets, and the highest value you'll get is actually
  // (upper - page_size).
  m_adjustment(0.0, 0.0, 101.0, 0.1, 1.0, 1.0),
  m_adjustment_digits(1.0, 0.0, 5.0),
  m_adjustment_pagesize(1.0, 1.0, 101.0),

  m_VScale(m_adjustment),
  m_HScale(m_adjustment),
  m_Scale_Digits(m_adjustment_digits),
  m_Scale_PageSize(m_adjustment_pagesize),

  // a checkbutton to control whether the value is displayed or not
  m_CheckButton("Display value on scale widgets", 0),

  // reuse the same adjustment again
  m_Scrollbar(m_adjustment),
  // notice how this causes the scales to always be update
  // continuously when the scrollbar is moved

  m_Button_Quit("Quit")
{
  set_title("range controls");

  //VScale:
  m_VScale.set_update_policy(Gtk::UPDATE_CONTINUOUS);
  m_VScale.set_digits(1);
  m_VScale.set_value_pos(Gtk::POS_TOP);
  m_VScale.set_draw_value();

  //HScale:
  m_HScale.set_update_policy(Gtk::UPDATE_CONTINUOUS);
  m_HScale.set_digits(1);
  m_HScale.set_value_pos(Gtk::POS_TOP);
  m_HScale.set_draw_value();
  m_HScale.set_size_request(200, 30);

  add(m_VBox_Top);
  m_VBox_Top.pack_start(m_VBox2);
  m_VBox2.set_border_width(10);
  m_VBox2.pack_start(m_HBox_Scales);

  //Put VScale and HScale (above scrollbar) side-by-side.
  m_HBox_Scales.pack_start(m_VScale);
  m_HBox_Scales.pack_start(m_VBox_HScale);

  m_VBox_HScale.pack_start(m_HScale);

  //Scrollbar:
  m_Scrollbar.set_update_policy(Gtk::UPDATE_CONTINUOUS);
  m_VBox_HScale.pack_start(m_Scrollbar);

  //CheckButton:
  m_CheckButton.set_active();
  m_CheckButton.signal_toggled().connect( SigC::slot(*this, &ExampleWindow::on_checkbutton_toggled) );
  m_VBox2.pack_start(m_CheckButton);

  //OptionMenus:
  {
      using namespace Gtk::Menu_Helpers;

      MenuList& list_vpos = m_Menu_Position.items();
      list_vpos.push_back(
        MenuElem("Top", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_position), Gtk::POS_TOP)) );
      list_vpos.push_back(
        MenuElem("Bottom", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_position), Gtk::POS_BOTTOM)) );
      list_vpos.push_back(
        MenuElem("Left", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_position), Gtk::POS_LEFT)) );
      list_vpos.push_back(
        MenuElem("Right", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_position), Gtk::POS_RIGHT)) );

      m_VBox2.pack_start( *manage(new LabeledOptionMenu("Scale Value Position:", m_Menu_Position)) );


      MenuList& list_upd = m_Menu_Policy.items();
      list_upd.push_back(
        MenuElem("Continuous", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_policy), Gtk::UPDATE_CONTINUOUS)) );
      list_upd.push_back(
        MenuElem("Discontinuous", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_policy), Gtk::UPDATE_DISCONTINUOUS)) );
      list_upd.push_back(
        MenuElem("Delayed", SigC::bind( SigC::slot(*this, &ExampleWindow::on_menu_policy), Gtk::UPDATE_DELAYED)) );

      m_VBox2.pack_start( *manage(new LabeledOptionMenu("Scale Update Policy:", m_Menu_Policy)) );
  }

  //Digits:
  m_HBox_Digits.pack_start(*manage(new Gtk::Label("Scale Digits:", 0)),  Gtk::PACK_SHRINK);
  m_Scale_Digits.set_digits(0);
  m_adjustment_digits.signal_value_changed().connect( SigC::slot(*this, &ExampleWindow::on_adjustment1_value_changed) );
  m_HBox_Digits.pack_start(m_Scale_Digits);

  //Page Size:
  m_HBox_PageSize.pack_start(*manage(new Gtk::Label("Scrollbar Page Size:", 0)), Gtk::PACK_SHRINK);
  m_Scale_PageSize.set_digits(0);
  m_adjustment_pagesize.signal_value_changed().connect( SigC::slot(*this, &ExampleWindow::on_adjustment2_value_changed) );
  m_HBox_PageSize.pack_start(m_Scale_PageSize);

  m_VBox2.pack_start(m_HBox_Digits);
  m_VBox2.pack_start(m_HBox_PageSize);
  m_VBox_Top.pack_start(m_Separator, Gtk::PACK_SHRINK);
  m_VBox_Top.pack_start(m_Button_Quit, Gtk::PACK_SHRINK);

  m_Button_Quit.set_flags(Gtk::CAN_DEFAULT);
  m_Button_Quit.grab_default();
  m_Button_Quit.signal_clicked().connect(SigC::slot(&Gtk::Main::quit));
  m_Button_Quit.set_border_width(10);

  show_all_children();
}

ExampleWindow::~ExampleWindow()
{
}

void ExampleWindow::on_checkbutton_toggled()
{
    m_VScale.set_draw_value(m_CheckButton.get_active());
    m_HScale.set_draw_value(m_CheckButton.get_active());
}

void ExampleWindow::on_menu_position(Gtk::PositionType postype)
{
    m_VScale.set_value_pos(postype);
    m_HScale.set_value_pos(postype);
}

void ExampleWindow::on_menu_policy(Gtk::UpdateType type)
{
    m_VScale.set_update_policy(type);
    m_HScale.set_update_policy(type);
}

void ExampleWindow::on_adjustment1_value_changed()
{
    double val = m_adjustment_digits.get_value();
    m_VScale.set_digits((int)val);
    m_HScale.set_digits((int)val);
}

void ExampleWindow::on_adjustment2_value_changed()
{
    double val = m_adjustment_pagesize.get_value();
    m_adjustment.set_page_size((int)val);
    m_adjustment.set_page_increment((int)val);

    // note that we don't have to emit the "changed" signal;
    // gtkmm does this for us
}

void ExampleWindow::on_button_quit()
{
  hide();
}

File: labeledoptionmenu.cc

#include "labeledoptionmenu.h"

LabeledOptionMenu::LabeledOptionMenu(const Glib::ustring& menu_title, Gtk::Menu& menu, bool homogeneous, int spacing) :
    Gtk::HBox(homogeneous, spacing),
    m_label(menu_title),
    m_pMenu(&menu)
{
  pack_start(m_label, Gtk::PACK_SHRINK);

  m_OptionMenu.set_menu(*m_pMenu);
  pack_start(m_OptionMenu);
}

File: main.cc

#include <gtkmm/main.h>
#include "examplewindow.h"

int main(int argc, char *argv[])
{
  Gtk::Main kit(argc, argv);

  ExampleWindow window;
  Gtk::Main::run(window); //Shows the window and returns when it is closed.

  return 0;
}