source/button.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2007, 2009  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 Resources &r, const std::string &t):
  16         Widget(r),
  17         text(),
  18         icon(0),
  19         pressed(false)
  20 {
  21         update_style();
  22         set_text(t);
  23 }
  24
  25 void Button::set_text(const std::string &t)
  26 {
  27         text = t;
  28 }
  29
  30 void Button::set_icon(const GL::Texture2D *i)
  31 {
  32         icon = i;
  33 }
  34
  35 void Button::button_press(int, int, unsigned btn)
  36 {
  37         if(btn==1)
  38         {
  39                 pressed = true;
  40                 state |= ACTIVE;
  41         }
  42 }
  43
  44 void Button::button_release(int x, int y, unsigned btn)
  45 {
  46         if(pressed && btn==1)
  47         {
  48                 state &= ~ACTIVE;
  49                 pressed = false;
  50
  51                 if(geom.is_inside_relative(x, y))
  52                         signal_clicked.emit();
  53         }
  54 }
  55
  56 void Button::pointer_motion(int x, int y)
  57 {
  58         if(pressed)
  59         {
  60                 if(!geom.is_inside_relative(x, y))
  61                         state &= ~ACTIVE;
  62                 else
  63                         state |= ACTIVE;
  64         }
  65 }
  66
  67 void Button::render_special(const Part &part) const
  68 {
  69         if(part.get_name()=="text")
  70                 text.render(part, geom);
  71         if(part.get_name()=="icon" && icon)
  72         {
  73                 Geometry rgeom;
  74                 rgeom.w = icon->get_width();
  75                 rgeom.h = icon->get_height();
  76                 part.get_alignment().apply(rgeom, geom, part.get_margin());
  77
  78                 icon->bind();
  79                 GL::Immediate imm((GL::COLOR4_UBYTE, GL::TEXCOORD2, GL::VERTEX2));
  80                 imm.color(1.0f, 1.0f, 1.0f);
  81                 imm.begin(GL::QUADS);
  82                 imm.texcoord(0, 0);
  83                 imm.vertex(rgeom.x, rgeom.y);
  84                 imm.texcoord(1, 0);
  85                 imm.vertex(rgeom.x+rgeom.w, rgeom.y);
  86                 imm.texcoord(1, 1);
  87                 imm.vertex(rgeom.x+rgeom.w, rgeom.y+rgeom.h);
  88                 imm.texcoord(0, 1);
  89                 imm.vertex(rgeom.x, rgeom.y+rgeom.h);
  90                 imm.end();
  91                 GL::Texture::unbind();
  92         }
  93 }
  94
  95 void Button::on_style_change()
  96 {
  97         text.set_style(style);
  98 }
  99
 100
 101 Button::Loader::Loader(Button &btn):
 102         Widget::Loader(btn)
 103 {
 104         add("text", &Loader::text);
 105 }
 106
 107 void Button::Loader::text(const std::string &t)
 108 {
 109         static_cast<Button &>(wdg).text = t;
 110 }
 111
 112 } // namespace GLtk
 113 } // namespace Msp