source/button.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2007-2011  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <msp/gl/immediate.h>
   9 #include "button.h"
  10 #include "part.h"
  11
  12 namespace Msp {
  13 namespace GLtk {
  14
  15 Button::Button(const std::string &t):
  16         text(),
  17         icon(0),
  18         pressed(false)
  19 {
  20         set_text(t);
  21 }
  22
  23 void Button::set_text(const std::string &t)
  24 {
  25         text = t;
  26 }
  27
  28 void Button::set_icon(const GL::Texture2D *i)
  29 {
  30         icon = i;
  31 }
  32
  33 void Button::render_special(const Part &part) const
  34 {
  35         if(part.get_name()=="text")
  36                 text.render(part, geom);
  37         if(part.get_name()=="icon" && icon)
  38         {
  39                 Geometry rgeom;
  40                 rgeom.w = icon->get_width();
  41                 rgeom.h = icon->get_height();
  42                 part.get_alignment().apply(rgeom, geom, part.get_margin());
  43
  44                 icon->bind();
  45                 GL::Immediate imm((GL::COLOR4_UBYTE, GL::TEXCOORD2, GL::VERTEX2));
  46                 imm.color(1.0f, 1.0f, 1.0f);
  47                 imm.begin(GL::QUADS);
  48                 imm.texcoord(0, 0);
  49                 imm.vertex(rgeom.x, rgeom.y);
  50                 imm.texcoord(1, 0);
  51                 imm.vertex(rgeom.x+rgeom.w, rgeom.y);
  52                 imm.texcoord(1, 1);
  53                 imm.vertex(rgeom.x+rgeom.w, rgeom.y+rgeom.h);
  54                 imm.texcoord(0, 1);
  55                 imm.vertex(rgeom.x, rgeom.y+rgeom.h);
  56                 imm.end();
  57                 GL::Texture::unbind();
  58         }
  59 }
  60
  61 void Button::button_press(int, int, unsigned btn)
  62 {
  63         if(btn==1)
  64         {
  65                 pressed = true;
  66                 state |= ACTIVE;
  67         }
  68 }
  69
  70 void Button::button_release(int x, int y, unsigned btn)
  71 {
  72         if(pressed && btn==1)
  73         {
  74                 state &= ~ACTIVE;
  75                 pressed = false;
  76
  77                 if(geom.is_inside_relative(x, y))
  78                         signal_clicked.emit();
  79         }
  80 }
  81
  82 void Button::pointer_motion(int x, int y)
  83 {
  84         if(pressed)
  85         {
  86                 if(!geom.is_inside_relative(x, y))
  87                         state &= ~ACTIVE;
  88                 else
  89                         state |= ACTIVE;
  90         }
  91 }
  92
  93 void Button::on_style_change()
  94 {
  95         text.set_style(style);
  96 }
  97
  98
  99 Button::Loader::Loader(Button &btn):
 100         Widget::Loader(btn)
 101 {
 102         add("text", &Loader::text);
 103 }
 104
 105 void Button::Loader::text(const std::string &t)
 106 {
 107         static_cast<Button &>(wdg).text = t;
 108 }
 109
 110 } // namespace GLtk
 111 } // namespace Msp