examples/widgetdemo/dropdowndemo.cpp

   1 #include <msp/gltk/dropdown.h>
   2 #include <msp/strings/format.h>
   3 #include "dropdowndemo.h"
   4
   5 using namespace std;
   6 using namespace Msp;
   7
   8 DropdownDemo::DropdownDemo()
   9 {
  10         get_or_create_layout();
  11
  12         GLtk::Dropdown *drp = &add_new<GLtk::Dropdown>(categories);
  13         drp->signal_item_selected.connect(sigc::mem_fun(this, &DropdownDemo::category_selected));
  14
  15         categories.append("Arabic numerals");
  16         categories.append("Roman numerals");
  17         categories.append("Lowercase letters");
  18         categories.append("Uppercase letters");
  19
  20         GLtk::Widget *prev = drp;
  21         drp = &add_new<GLtk::Dropdown>(values);
  22
  23         layout->add_constraint(*drp, GLtk::Layout::BELOW, *prev);
  24         layout->add_constraint(*drp, GLtk::Layout::ALIGN_LEFT, *prev);
  25         layout->add_constraint(*drp, GLtk::Layout::ALIGN_RIGHT, *prev);
  26 }
  27
  28 void DropdownDemo::category_selected(unsigned i)
  29 {
  30         values.clear();
  31         if(i==0)
  32         {
  33                 for(unsigned j=0; j<=26; ++j)
  34                         values.append(format("%d", j));
  35         }
  36         else if(i==1)
  37         {
  38                 for(unsigned j=1; j<=26; ++j)
  39                 {
  40                         string r = string(j/10, 'X');
  41                         if(j%10==9)
  42                                 r += "IX";
  43                         else if(j%10>=4)
  44                         {
  45                                 if(j%10==4)
  46                                         r += 'I';
  47                                 r += 'V';
  48                         }
  49
  50                         if(j%5<=3)
  51                                 r += string(j%5, 'I');
  52
  53                         values.append(r);
  54                 }
  55         }
  56         else if(i==2)
  57         {
  58                 for(unsigned j=0; j<26; ++j)
  59                         values.append(string(1, 'a'+j));
  60         }
  61         else if(i==3)
  62         {
  63                 for(unsigned j=0; j<26; ++j)
  64                         values.append(string(1, 'A'+j));
  65         }
  66 }