This will be a longish one, and probably not interesting to most folk...
> OK - I was going to suggest that popping up a modal window with an
> Fl_Select_Browser in it would probably do the trick, but if you have it
> working already then that's good.
I thought I posted this earlier, but it looks like I forgot... Here's the
"proof of concept" that I did in my tea-break, for my Fl_Select_Browser based
pop-up menu system to address Michael's problems with Fl_Menu on his
touchscreen device.
Just for completeness, or in case any one cares!
---------------
/* Test of a pseudo popup menu based on Fl_Select_Browser */
#include <stdio.h>
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Menu_Bar.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Select_Browser.H>
Fl_Double_Window *main_win=(Fl_Double_Window *)0;
Fl_Double_Window *pop_win=(Fl_Double_Window *)0;
Fl_Menu_Bar *mbar=(Fl_Menu_Bar *)0;
Fl_Button *quit_bt=(Fl_Button *)0;
Fl_Button *add_bt=(Fl_Button *)0;
Fl_Button *rmv_bt=(Fl_Button *)0;
static int last_item = 0; // last item we clicked in the popup
/********************************************************************************************/
class Pop_Browser : public Fl_Select_Browser {
public:
Pop_Browser(int X, int Y, int W, int H) : Fl_Select_Browser(X, Y, W, H){};
int get_height(void){return full_height();}
int get_width(void){return full_width();}
};
Pop_Browser *pop_brws=(Pop_Browser *)0;
/********************************************************************************************/
static void cb_mb_pop(Fl_Menu_*, void*) {
// menu item pop up
int fh = pop_brws->get_height();
int fw = pop_brws->get_width();
int x1 = Fl::event_x_root();
int y1 = Fl::event_y_root();
pop_brws->topline(1); // ensure the browser is always scrolled to the top
if(fh < 100) fh = 100;
if(fw < 100) fw = 100;
fh += 8; // 4 for browser border + 4 for window border
fw += 20;
pop_win->resize(x1, y1, fw, fh);
pop_win->show();
}
/********************************************************************************************/
static void generic_test_cb(Fl_Widget*, void *v) {
int data = (int)v;
printf("%s (%d)\n", pop_brws->text(data), data);
}
/********************************************************************************************/
static void cb_quit_bt(Fl_Button*, void*) {
if(pop_win) pop_win->hide();
if(main_win) main_win->hide();
}
/********************************************************************************************/
static void cb_add_bt(Fl_Button*, void*) {
static int incr = 66;
char line[32];
sprintf(line, "line: %d", incr);
pop_brws->add(line, (void *)generic_test_cb);
incr++;
}
/********************************************************************************************/
static void cb_rmv_bt(Fl_Button*, void*) {
int max = pop_brws->size();
if((last_item > 0) || (last_item <= max)) {
pop_brws->remove(last_item);
last_item = 0;
}
}
/********************************************************************************************/
static void cb_pop_brws(Pop_Browser* w, void*) {
// browser callback
int val = w->value();
if(val) {
Fl_Callback *get_cb = (Fl_Callback*)w->data(val);
get_cb(NULL, (void*)val);
} else {
puts("no select");
}
last_item = val;
fflush(stdout);
if(pop_win) pop_win->hide();
}
/********************************************************************************************/
Fl_Menu_Item menu_mbar[] = {
{"popup", 0, (Fl_Callback*)cb_mb_pop, 0, 0, FL_NORMAL_LABEL, 0, 14, 0},
{0,0,0,0,0,0,0,0,0}
};
/********************************************************************************************/
int main(int argc, char **argv) {
main_win = new Fl_Double_Window(404, 271, "Touch Menu Test");
main_win->begin();
mbar = new Fl_Menu_Bar(0, 0, 404, 20);
mbar->box(FL_FLAT_BOX);
mbar->menu(menu_mbar);
add_bt = new Fl_Button(105, 215, 64, 30, "Add");
add_bt->callback((Fl_Callback*)cb_add_bt);
rmv_bt = new Fl_Button(205, 215, 64, 30, "Remove");
rmv_bt->callback((Fl_Callback*)cb_rmv_bt);
quit_bt = new Fl_Button(305, 215, 64, 30, "Quit");
quit_bt->callback((Fl_Callback*)cb_quit_bt);
main_win->end();
main_win->show(argc, argv);
pop_win = new Fl_Double_Window(350, 350);
pop_win->begin();
pop_win->clear_border();
pop_win->box(FL_THIN_UP_BOX);
pop_brws = new Pop_Browser(2, 2, 346, 346);
pop_brws->box(FL_FLAT_BOX);
pop_brws->color(FL_BACKGROUND_COLOR);
pop_brws->callback((Fl_Callback*)cb_pop_brws);
char line[32];
for(int i = 1; i <= 7; i++) {
sprintf(line, "line: %d", i);
pop_brws->add(line, (void *)generic_test_cb);
}
pop_brws->add("Menu Entry with a very long title", (void *)generic_test_cb);
pop_brws->has_scrollbar(0); // supress any scrollbars - we do not want them
pop_win->resizable(pop_brws);
pop_win->set_modal();
pop_win->end();
return Fl::run();
}
/* end of file */
---------------
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