source/table.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2008  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <msp/gl/matrix.h>
   9 #include <msp/gl/transform.h>
  10 #include "part.h"
  11 #include "style.h"
  12 #include "table.h"
  13
  14 using namespace std;
  15
  16 namespace Msp {
  17 namespace GLtk {
  18
  19 Table::Table(const Resources &r):
  20         Widget(r),
  21         rows(1),
  22         columns(1),
  23         data(1),
  24         col_w(1)
  25 {
  26         focusable = false;
  27         update_style();
  28 }
  29
  30 void Table::set_rows(unsigned r)
  31 {
  32         rows = r;
  33         data.resize(rows*columns);
  34 }
  35
  36 void Table::set_columns(unsigned c)
  37 {
  38         vector<string> new_data(rows*c);
  39         for(unsigned i=0; i<rows; ++i)
  40                 for(unsigned j=0; j<min(c, columns); ++j)
  41                         new_data[i*c+j].swap(data[i*columns+j]);
  42         data.swap(new_data);
  43         columns = c;
  44
  45         col_w.resize(columns);
  46 }
  47
  48 void Table::set_column_width(unsigned c, unsigned w)
  49 {
  50         if(c>=columns)
  51                 throw InvalidParameterValue("Column index out of bounds");
  52         col_w[c] = w;
  53 }
  54
  55 void Table::set_cell_text(unsigned r, unsigned c, const string &t)
  56 {
  57         if(r>=rows || c>=columns)
  58                 throw InvalidParameterValue("Cell coordinates out of bounds");
  59
  60         data[r*columns+c] = t;
  61 }
  62
  63 void Table::render_special(const Part &part) const
  64 {
  65         if(part.get_name()=="cells")
  66         {
  67                 const GL::Font *const font = style->get_font();
  68                 const float font_size = font->get_default_size();
  69
  70                 unsigned free_width = geom.w;
  71                 for(unsigned i=0; i<columns; ++i)
  72                         free_width -= col_w[i];
  73
  74                 Geometry cgeom;
  75                 cgeom.h = geom.h/rows;
  76                 cgeom.y = geom.h-cgeom.h;
  77
  78                 for(unsigned i=0; i<rows; ++i)
  79                 {
  80                         cgeom.x = 0;
  81                         for(unsigned j=0; j<columns; ++j)
  82                         {
  83                                 if(col_w[j])
  84                                         cgeom.w = col_w[j];
  85                                 else
  86                                         cgeom.w = free_width/columns;
  87
  88                                 const string &text = data[i*columns+j];
  89                                 Geometry rgeom;
  90                                 rgeom.x = cgeom.x;
  91                                 rgeom.y = cgeom.y;
  92                                 rgeom.w = static_cast<unsigned>(font->get_string_width(text)*font_size);
  93                                 rgeom.h = static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
  94
  95                                 part.get_alignment().apply(rgeom, cgeom, part.get_margin());
  96
  97                                 GL::push_matrix();
  98                                 GL::translate(rgeom.x, rgeom.y, 0);
  99                                 GL::scale_uniform(font_size);
 100                                 font->draw_string(text);
 101                                 GL::pop_matrix();
 102
 103                                 cgeom.x += cgeom.w;
 104                         }
 105
 106                         cgeom.y -= cgeom.h;
 107                 }
 108         }
 109 }
 110
 111 void Table::on_style_change()
 112 {
 113 }
 114
 115
 116 Table::Loader::Loader(Table &t):
 117         Widget::Loader(t)
 118 {
 119         add("cell_text",    &Loader::cell_text);
 120         add("column_width", &Loader::column_width);
 121         add("columns",      &Loader::columns);
 122         add("rows",         &Loader::rows);
 123 }
 124
 125 void Table::Loader::cell_text(unsigned r, unsigned c, const string &t)
 126 {
 127         static_cast<Table &>(wdg).set_cell_text(r, c, t);
 128 }
 129
 130 void Table::Loader::column_width(unsigned c, unsigned w)
 131 {
 132         static_cast<Table &>(wdg).set_column_width(c, w);
 133 }
 134
 135 void Table::Loader::columns(unsigned c)
 136 {
 137         static_cast<Table &>(wdg).set_columns(c);
 138 }
 139
 140 void Table::Loader::rows(unsigned r)
 141 {
 142         static_cast<Table &>(wdg).set_rows(r);
 143 }
 144
 145 } // namespace GLtk
 146 } // namespace Msp