C++ (Cpp) Adjustment::get_step_increment Examples

Example #1

File: liveplay.cpp Project: unclechu/guitarix

bool Liveplay::on_keyboard_arrows(GtkAccelGroup *accel_group, GObject *acceleratable,
                                  guint keyval, GdkModifierType modifier, Liveplay& self) {
    if (keyval == GDK_KEY_Left || keyval == GDK_KEY_Right) {
        Gtk::Adjustment *a = self.brightness_slider->get_adjustment();
        double val = a->get_value();
        double step = a->get_step_increment();
        if (keyval == GDK_KEY_Left) {
            val -= step;
        } else {
            val += step;
        }
        a->set_value(val);
    } else {
        Gtk::Adjustment *a = self.background_slider->get_adjustment();
        double val = a->get_value();
        double step = a->get_step_increment();
        if (keyval == GDK_KEY_Down) {
            val -= step;
        } else {
            val += step;
        }
        a->set_value(val);
    }
    return true;
}

Example #2

File: imageview.cpp Project: shinnya/jd-mirror

//
// 左スクロール
//
void ImageViewMain::scroll_left()
{
#ifdef _DEBUG
    std::cout << "ImageViewMain::scroll_left\n";
#endif

    Gtk::Adjustment*  hadjust = m_scrwin->get_hadjustment();
    if( !hadjust ) return;
    hadjust->set_value( MAX( 0,  hadjust->get_value() - hadjust->get_step_increment() ) );
}

Example #3

File: imageview.cpp Project: shinnya/jd-mirror

//
// 上スクロール
//
void ImageViewMain::scroll_up()
{
#ifdef _DEBUG
    std::cout << "ImageViewMain::scroll_up\n";
#endif

    Gtk::Adjustment*  vadjust = m_scrwin->get_vadjustment();
    if( !vadjust ) return;
    vadjust->set_value( MAX( 0,  vadjust->get_value() - vadjust->get_step_increment() ) );
}

Example #4

File: imageview.cpp Project: shinnya/jd-mirror

//
// 右スクロール
//
void ImageViewMain::scroll_right()
{
#ifdef _DEBUG
    std::cout << "ImageViewMain::scroll_right\n";
#endif

    Gtk::Adjustment*  hadjust = m_scrwin->get_hadjustment();
    if( !hadjust ) return;
    hadjust->set_value(  MIN( hadjust->get_upper() - hadjust->get_page_size(),
                              hadjust->get_value() + hadjust->get_step_increment() ) );
}

Example #5

File: imageview.cpp Project: shinnya/jd-mirror

//
// 下スクロール
//
void ImageViewMain::scroll_down()
{
#ifdef _DEBUG
    std::cout << "ImageViewMain::scroll_down\n";
#endif

    Gtk::Adjustment*  vadjust = m_scrwin->get_vadjustment();
    if( !vadjust ) return;
    vadjust->set_value(  MIN( vadjust->get_upper() - vadjust->get_page_size(),
                              vadjust->get_value() + vadjust->get_step_increment() ) );
}