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