src/Fl_Return_Button.cxx

   1 //
   2 // "$Id: Fl_Return_Button.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // Return button widget for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 #include <FL/Fl.H>
  29 #include <FL/Fl_Return_Button.H>
  30 #include <FL/fl_draw.H>
  31
  32 int fl_return_arrow(int x, int y, int w, int h) {
  33   int size = w; if (h<size) size = h;
  34   int d = (size+2)/4; if (d<3) d = 3;
  35   int t = (size+9)/12; if (t<1) t = 1;
  36   int x0 = x+(w-2*d-2*t-1)/2;
  37   int x1 = x0+d;
  38   int y0 = y+h/2;
  39   fl_color(FL_LIGHT3);
  40   fl_line(x0, y0, x1, y0+d);
  41   fl_yxline(x1, y0+d, y0+t, x1+d+2*t, y0-d);
  42   fl_yxline(x1, y0-t, y0-d);
  43   fl_color(fl_gray_ramp(0));
  44   fl_line(x0, y0, x1, y0-d);
  45   fl_color(FL_DARK3);
  46   fl_xyline(x1+1, y0-t, x1+d, y0-d, x1+d+2*t);
  47   return 1;
  48 }
  49
  50 void Fl_Return_Button::draw() {
  51   if (type() == FL_HIDDEN_BUTTON) return;
  52   draw_box(value() ? (down_box()?down_box():fl_down(box())) : box(),
  53            value() ? selection_color() : color());
  54   int W = h();
  55   if (w()/3 < W) W = w()/3;
  56   fl_return_arrow(x()+w()-W-4, y(), W, h());
  57   draw_label(x(), y(), w()-W+4, h());
  58   if (Fl::focus() == this) draw_focus();
  59 }
  60
  61 int Fl_Return_Button::handle(int event) {
  62   if (event == FL_SHORTCUT &&
  63       (Fl::event_key() == FL_Enter || Fl::event_key() == FL_KP_Enter)) {
  64     simulate_key_action();
  65     do_callback();
  66     return 1;
  67   } else
  68     return Fl_Button::handle(event);
  69 }
  70
  71 //
  72 // End of "$Id: Fl_Return_Button.cxx 7903 2010-11-28 21:06:39Z matt $".
  73 //