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         set_layout(new GLtk::Layout);
  11
  12         GLtk::Dropdown *drp = new GLtk::Dropdown(categories);
  13         drp->signal_item_selected.connect(sigc::mem_fun(this, &DropdownDemo::category_selected));
  14         add(*drp);
  15
  16         categories.append("Arabic numerals");
  17         categories.append("Roman numerals");
  18         categories.append("Lowercase letters");
  19         categories.append("Uppercase letters");
  20
  21         GLtk::Widget *prev = drp;
  22         drp = new GLtk::Dropdown(values);
  23         add(*drp);
  24
  25         layout->add_constraint(*drp, GLtk::Layout::BELOW, *prev);
  26         layout->add_constraint(*drp, GLtk::Layout::ALIGN_LEFT, *prev);
  27         layout->add_constraint(*drp, GLtk::Layout::ALIGN_RIGHT, *prev);
  28 }
  29
  30 void DropdownDemo::category_selected(unsigned i)
  31 {
  32         values.clear();
  33         if(i==0)
  34         {
  35                 for(unsigned j=0; j<=26; ++j)
  36                         values.append(format("%d", j));
  37         }
  38         else if(i==1)
  39         {
  40                 for(unsigned j=1; j<=26; ++j)
  41                 {
  42                         string r = string(j/10, 'X');
  43                         if(j%10==9)
  44                                 r += "IX";
  45                         else if(j%10>=4)
  46                         {
  47                                 if(j%10==4)
  48                                         r += 'I';
  49                                 r += 'V';
  50                         }
  51
  52                         if(j%5<=3)
  53                                 r += string(j%5, 'I');
  54
  55                         values.append(r);
  56                 }
  57         }
  58         else if(i==2)
  59         {
  60                 for(unsigned j=0; j<26; ++j)
  61                         values.append(string(1, 'a'+j));
  62         }
  63         else if(i==3)
  64         {
  65                 for(unsigned j=0; j<26; ++j)
  66                         values.append(string(1, 'A'+j));
  67         }
  68 }