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/** Standart libraries: **/
#include <iostream>
/** gtkmm widgets (only the needed widgets). **/
#include <gtkmm/main.h>
#include <gtkmm/window.h>
#include <gtkmm/box.h>
#include <gtkmm/frame.h>
#include <gtkmm/scale.h>
#include <gtkmm/adjustment.h>
#include <gtkmm/eventbox.h>
/** Other libraries **/
#include <glibmm.h>
/** To comil with:
*
* $ g++ -std=c++11 main.cpp $(pkg-config --cflags --libs gtkmm-3.0)
*
********************************************************************/
class My_Window : public Gtk::Window {
Gtk::Box main_box ;
Gtk::Frame frame_scale ;
Gtk::EventBox event_box ;
Gtk::Scale scale ;
public : // Constructor:
My_Window() ;
public : // Getters:
Gtk::Scale& get_scale() { return scale ; } ;
Gtk::EventBox& get_eventbox() { return event_box ; }
public : // Signals handlers:
bool get_scroll_type(Gtk::ScrollType scroll_type, double value) ;
void get_scale_value(Gtk::Scale &scale) ;
void scale_adjusment_value_change() ;
void scale_adjusment_change() ;
void my_signal_move_slider(Gtk::ScrollType scroll_type) ;
bool on_button_press(GdkEventButton *event) ;
bool on_button_release(GdkEventButton *event) ;
bool on_scroll_event(GdkEventScroll *event) ;
public : // Variables.
/** The goal is to set this this variable on @true at
scale activation start and reset on on @false at end.
*/
bool start = false ;
/** The goal is to set this this variable on @true at
scale activation end and reset on @false at start.
*/
bool end = false ;
} ;
My_Window::My_Window() :
main_box(Gtk::ORIENTATION_VERTICAL),
frame_scale("frame"),
event_box(),
scale(Gtk::ORIENTATION_VERTICAL)
{
set_title("My Window") ;
set_resizable(false) ;
set_border_width(8) ;
scale.set_events(Gdk::BUTTON_PRESS_MASK) ;
scale.set_events(Gdk::BUTTON_RELEASE_MASK) ;
scale.set_events(Gdk::BUTTON_PRESS_MASK) ;
scale.set_events(Gdk::BUTTON_RELEASE_MASK) ;
scale.set_events(Gdk::SCROLL_MASK) ;
//scale.set_events(Gdk::BUTTON1_MOTION_MASK) ;
event_box.set_events(Gdk::ALL_EVENTS_MASK) ;
// Scale widget configuration.
scale.set_size_request(-1, 256) ;
scale.set_digits(0) ;
scale.set_draw_value(true) ;
scale.set_has_origin(true) ;
scale.set_upper_stepper_sensitivity(Gtk::SENSITIVITY_ON) ;
scale.set_lower_stepper_sensitivity(Gtk::SENSITIVITY_ON) ;
scale.set_adjustment( scale.get_adjustment() ) ;
scale.set_range(-255.0, 255.0) ;
scale.set_value(0.0) ;
scale.set_increments(1.0, 10.0) ;
scale.add_mark(0.0, Gtk::POS_RIGHT, "") ;
scale.set_margin_left(12) ;
scale.set_margin_right(12) ;
scale.set_margin_top(8) ;
scale.set_margin_bottom(8) ;
scale.set_inverted(true) ;
event_box.add(scale) ;
frame_scale.add(event_box) ;
//frame_scale.add(scale) ;
main_box.pack_start(frame_scale, true, true, 0) ;
add(main_box) ;
show_all() ;
}
bool My_Window::on_scroll_event(GdkEventScroll *event) {
fprintf(stdout,"signal_scroll_event()\n") ;
return true ; // return false to propagate events.
}
bool My_Window::on_button_press(GdkEventButton *event) {
fprintf(stdout,"BUTTON PRESS\n") ;
return true ; // return false to propagate events.
}
bool My_Window::on_button_release(GdkEventButton *event) {
fprintf(stdout,"BUTTON RELEASE\n") ;
return true ; // return false to propagate events.
}
bool My_Window::get_scroll_type(Gtk::ScrollType scroll_type, double value) {
// By activating it start and ends with this signal handler.
// But this handler is call every changing unfortunaly...
// And does only provide a single @ScrollType art.
if (scroll_type == Gtk::ScrollType::SCROLL_START) {
// Can never catch this Shitty !!!
fprintf(stdout, "Start scroll !!!\n") ;
}
else if (scroll_type == Gtk::ScrollType::SCROLL_END) {
// Can never catch this Shitty !!!
fprintf(stdout, "End scroll !!!\n") ;
}
else {
//fprintf(stdout,"ScrollType...................: %d\n", scroll_type) ;
//fprintf(stdout,"default type is SCROLL_JUMP..: %d\n", Gtk::ScrollType::SCROLL_JUMP) ;
}
return false ; // return false to propagate events.
}
void My_Window::get_scale_value(Gtk::Scale &scale) {
fprintf(stdout,"current scale value..........: %li\n",static_cast<int64_t>(scale.get_value()) ) ;
}
void My_Window::scale_adjusment_value_change() {
//fprintf(stdout,"Scale Adjusment: ***signal_value_changed()***\n") ;
}
void My_Window::scale_adjusment_change() {
/** THis handler is never called. **/
//fprintf(stdout,"Scale Adjusment: ***signal_changed()***\n") ;
}
void My_Window::my_signal_move_slider(Gtk::ScrollType scroll_type) {
/** This handler is called by arrow key pressing. **/
if (scroll_type == Gtk::ScrollType::SCROLL_START) {
// Can never catch this Shitty !!!
fprintf(stdout, "Start scroll !!!\n") ;
}
else if (scroll_type == Gtk::ScrollType::SCROLL_END) {
// Can never catch this Shitty !!!
fprintf(stdout, "End scroll !!!\n") ;
}
else {
fprintf(stdout,"ScrollType...................: %d\n", scroll_type) ;
//fprintf(stdout,"default type is SCROLL_JUMP..: %d\n", Gtk::ScrollType::SCROLL_JUMP) ;
}
}
int main(int argc, char *argv[]) {
Gtk::Main app(argc, argv);
My_Window my_window ;
// Scale widget signals connecting:
my_window.get_scale().signal_value_changed().connect(sigc::bind<Gtk::Scale &>(sigc::mem_fun(my_window, &My_Window::get_scale_value), my_window.get_scale()) ) ;
my_window.get_scale().signal_change_value().connect(sigc::mem_fun(my_window, &My_Window::get_scroll_type) ) ;
my_window.get_scale().signal_move_slider().connect(sigc::mem_fun(my_window, &My_Window::my_signal_move_slider) ) ;
// _event signals handling:
my_window.get_scale().signal_button_press_event().connect(sigc::mem_fun(my_window, &My_Window::on_button_press) ) ;
my_window.get_scale().signal_button_release_event().connect(sigc::mem_fun(my_window, &My_Window::on_button_release) ) ;
my_window.get_scale().signal_scroll_event().connect(sigc::mem_fun(my_window, &My_Window::on_scroll_event) ) ;
// EventBox wrapping technic.
my_window.get_eventbox().signal_button_press_event().connect(sigc::mem_fun(my_window, &My_Window::on_button_press) ) ;
my_window.get_eventbox().signal_button_release_event().connect(sigc::mem_fun(my_window, &My_Window::on_button_release) ) ;
my_window.get_eventbox().signal_scroll_event().connect(sigc::mem_fun(my_window, &My_Window::on_scroll_event) ) ;
// Scale adjustment signals connecting:
my_window.get_scale().get_adjustment()->signal_value_changed().connect(sigc::mem_fun(my_window, &My_Window::scale_adjusment_value_change) ) ;
my_window.get_scale().get_adjustment()->signal_changed().connect(sigc::mem_fun(my_window, &My_Window::scale_adjusment_change) ) ;
Gtk::Main::run(my_window) ;
return 0 ;
} |
