source/entry.cpp

   1 #include <SDL/SDL_keysym.h>
   2 #include <msp/gl/matrix.h>
   3 #include <msp/gl/transform.h>
   4 #include "entry.h"
   5 #include "part.h"
   6 #include "style.h"
   7
   8 using namespace std;
   9
  10 namespace Msp {
  11 namespace GLtk {
  12
  13 Entry::Entry(const Resources &r, const string &t):
  14         Widget(r),
  15         text(t),
  16         edit_pos(0),
  17         active(false)
  18 {
  19 }
  20
  21 void Entry::set_text(const string &t)
  22 {
  23         text=t;
  24         if(edit_pos>text.size())
  25                 edit_pos=text.size();
  26 }
  27
  28 void Entry::key_press(unsigned key, unsigned, wchar_t ch)
  29 {
  30         if(key==SDLK_LEFT)
  31         {
  32                 if(edit_pos>0)
  33                         --edit_pos;
  34         }
  35         else if(key==SDLK_RIGHT)
  36         {
  37                 if(edit_pos<text.size())
  38                         ++edit_pos;
  39         }
  40         else if(key==SDLK_BACKSPACE)
  41         {
  42                 if(edit_pos>0)
  43                         text.erase(--edit_pos, 1);
  44         }
  45         else
  46         {
  47                 text+=ch;
  48         }
  49 }
  50
  51 void Entry::focus_in()
  52 {
  53         active=true;
  54 }
  55
  56 void Entry::focus_out()
  57 {
  58         active=false;
  59 }
  60
  61 void Entry::render_part(const Part &part) const
  62 {
  63         if(part.get_name()=="text")
  64         {
  65                 const GL::Font *const font=style->get_font();
  66
  67                 const float font_size=font->get_default_size();
  68                 unsigned text_w=static_cast<unsigned>(font->get_string_width(text)*font_size);
  69
  70                 GL::push_matrix();
  71
  72                 part.get_alignment().apply(geom, text_w, static_cast<unsigned>(font->get_ascent()*font_size));
  73                 GL::scale_uniform(font_size);
  74
  75                 const Color &color=style->get_font_color();
  76                 glColor3f(color.r, color.g, color.b);
  77                 if(active)
  78                 {
  79                         font->draw_string(text.substr(0, edit_pos));
  80                         glBegin(GL_LINES);
  81                         glVertex2f(0, 0);
  82                         glVertex2f(0, 1);
  83                         glEnd();
  84                         font->draw_string(text.substr(edit_pos));
  85                 }
  86                 else
  87                         font->draw_string(text);
  88                 glColor3f(1, 1, 1);
  89
  90                 GL::pop_matrix();
  91                 render_text(part, text);
  92         }
  93         else
  94                 Widget::render_part(part);
  95 }
  96
  97 } // namespace GLtk
  98 } // namespace Msp