source/column.cpp

   1 #include "column.h"
   2
   3 namespace Msp {
   4 namespace GLtk {
   5
   6 Column::Column(Layout &l):
   7         Arrangement(l),
   8         first(true),
   9         split_here(false),
  10         gravity(1)
  11 { }
  12
  13 void Column::split()
  14 {
  15         if(gravity<0)
  16                 throw arrangement_error("already split");
  17
  18         split_here = true;
  19         gravity = -1;
  20 }
  21
  22 void Column::process_widget(Widget &wdg, Side side, bool aligned)
  23 {
  24         if(side==TOP)
  25         {
  26                 bool snug = (edges[BOTTOM].aligned && aligned && !split_here);
  27                 add_constraint(wdg, (snug ? Layout::BELOW : Layout::FAR_BELOW), BOTTOM);
  28                 if(first)
  29                         edges[TOP].add(wdg, aligned);
  30         }
  31         else if(side==BOTTOM)
  32                 next_bottom.add(wdg, (aligned && gravity<0));
  33         else
  34         {
  35                 if(edges[side].aligned && aligned)
  36                         add_constraint(wdg, (side==LEFT ? Layout::ALIGN_LEFT : Layout::ALIGN_RIGHT), side);
  37                 edges[side].add(wdg, aligned);
  38         }
  39 }
  40
  41 void Column::finish_widget(Widget &wdg)
  42 {
  43         layout.set_gravity(wdg, -1, gravity);
  44 }
  45
  46 void Column::finish_slot()
  47 {
  48         edges[BOTTOM] = next_bottom;
  49         next_bottom.clear();
  50         split_here = false;
  51         first = false;
  52 }
  53
  54
  55 Column::Loader::Loader(Column &c):
  56         DataFile::ObjectLoader<Column>(c)
  57 {
  58         add("split", &Loader::split);
  59 }
  60
  61 void Column::Loader::split()
  62 {
  63         obj.split();
  64 }
  65
  66 } // namespace GLtk
  67 } // namespace Msp