src/Fl_Multi_Label.cxx

   1 //
   2 // "$Id: Fl_Multi_Label.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // Multi-label 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 // Allows two labels to be used on a widget (by having one of them
  29 // be one of these it allows an infinte number!)
  30
  31 #include <FL/Fl.H>
  32 #include <FL/Fl_Widget.H>
  33 #include <FL/Fl_Menu_Item.H>
  34 #include <FL/Fl_Multi_Label.H>
  35
  36 static void multi_labeltype(
  37     const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
  38 {
  39   Fl_Multi_Label* b = (Fl_Multi_Label*)(o->value);
  40   Fl_Label local = *o;
  41   local.value = b->labela;
  42   local.type = b->typea;
  43   int W = w; int H = h; local.measure(W, H);
  44   local.draw(x,y,w,h,a);
  45   if (a & FL_ALIGN_BOTTOM) h -= H;
  46   else if (a & FL_ALIGN_TOP) {y += H; h -= H;}
  47   else if (a & FL_ALIGN_RIGHT) w -= W;
  48   else if (a & FL_ALIGN_LEFT) {x += W; w -= W;}
  49   else {int d = (h+H)/2; y += d; h -= d;}
  50   local.value = b->labelb;
  51   local.type = b->typeb;
  52   local.draw(x,y,w,h,a);
  53 }
  54
  55 // measurement is only correct for left-to-right appending...
  56 static void multi_measure(const Fl_Label* o, int& w, int& h) {
  57   Fl_Multi_Label* b = (Fl_Multi_Label*)(o->value);
  58   Fl_Label local = *o;
  59   local.value = b->labela;
  60   local.type = b->typea;
  61   local.measure(w,h);
  62   local.value = b->labelb;
  63   local.type = b->typeb;
  64   int W = 0; int H = 0; local.measure(W,H);
  65   w += W; if (H>h) h = H;
  66 }
  67
  68 void Fl_Multi_Label::label(Fl_Widget* o) {
  69   Fl::set_labeltype(_FL_MULTI_LABEL, multi_labeltype, multi_measure);
  70   o->label(_FL_MULTI_LABEL, (const char*)this);
  71 }
  72
  73 void Fl_Multi_Label::label(Fl_Menu_Item* o) {
  74   Fl::set_labeltype(_FL_MULTI_LABEL, multi_labeltype, multi_measure);
  75   o->label(_FL_MULTI_LABEL, (const char*)this);
  76 }
  77
  78 //
  79 // End of "$Id: Fl_Multi_Label.cxx 7903 2010-11-28 21:06:39Z matt $".
  80 //