src/frontends/xforms/FormMathsMatrix.C

   1 /**
   2  * \file FormMathsMatrix.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author Pablo De Napoli
   8  * \author John Levon
   9  * \author Angus Leeming
  10  *
  11  * Full author contact details are available in file CREDITS
  12  */
  13
  14 #include <config.h>
  15
  16
  17 #include "FormMathsMatrix.h"
  18 #include "forms/form_maths_matrix.h"
  19 #include "ControlMath.h"
  20 #include "xformsBC.h"
  21
  22 #include "support/LAssert.h"
  23 #include "support/lyxalgo.h" // lyx::count
  24
  25 #include "Lsstream.h"
  26
  27 #include FORMS_H_LOCATION
  28
  29 #include <algorithm>
  30
  31 #ifndef CXX_GLOBAL_CSTD
  32 using std::strlen;
  33 #endif
  34
  35
  36 static char h_align_str[80] = "c";
  37 static char v_align_c[] = "tcb";
  38
  39
  40 extern "C" {
  41
  42         static
  43         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  44                                          char const * cur, int c)
  45         {
  46                 lyx::Assert(ob);
  47                 FormMathsMatrix * pre =
  48                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  49                 lyx::Assert(pre);
  50                 return pre->AlignFilter(cur, c);
  51         }
  52
  53 }
  54
  55
  56 typedef FormCB<ControlMathSub, FormDB<FD_maths_matrix> > base_class;
  57
  58 FormMathsMatrix::FormMathsMatrix()
  59         : base_class(_("Maths Matrix"), false)
  60 {}
  61
  62
  63 void FormMathsMatrix::build()
  64 {
  65         dialog_.reset(build_maths_matrix(this));
  66
  67         fl_addto_choice(dialog_->choice_valign, _("Top | Center | Bottom"));
  68         fl_set_choice(dialog_->choice_valign, 2);
  69         fl_set_input(dialog_->input_halign, h_align_str);
  70         dialog_->input_halign->u_vdata = this;
  71         fl_set_input_filter(dialog_->input_halign,
  72                             C_FormMathsMatrixAlignFilter);
  73         setPrehandler(dialog_->input_halign);
  74
  75         bc().setOK(dialog_->button_ok);
  76         bc().setApply(dialog_->button_apply);
  77         bc().setCancel(dialog_->button_close);
  78
  79         bc().addReadOnly(dialog_->slider_rows);
  80         bc().addReadOnly(dialog_->slider_columns);
  81         bc().addReadOnly(dialog_->choice_valign);
  82         bc().addReadOnly(dialog_->input_halign);
  83 }
  84
  85
  86 void FormMathsMatrix::apply()
  87 {
  88         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  89         char const * sh = fl_get_input(dialog_->input_halign);
  90         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  91         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  92
  93         ostringstream os;
  94         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
  95         controller().dispatchFunc(LFUN_INSERT_MATRIX, STRCONV(os.str()));
  96 }
  97
  98
  99 void FormMathsMatrix::update()
 100 {
 101         bc().valid();
 102 }
 103
 104
 105 ButtonPolicy::SMInput FormMathsMatrix::input(FL_OBJECT * ob, long)
 106 {
 107         if (ob == dialog_->choice_valign ||
 108             ob == dialog_->slider_rows) return ButtonPolicy::SMI_VALID;
 109
 110         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 111         for (int i = 0; i < nx; ++i)
 112                 h_align_str[i] = 'c';
 113
 114         h_align_str[nx] = '\0';
 115
 116         fl_set_input(dialog_->input_halign, h_align_str);
 117         fl_redraw_object(dialog_->input_halign);
 118         return ButtonPolicy::SMI_VALID;
 119 }
 120
 121
 122 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 123 {
 124         size_t const len = strlen(cur);
 125
 126         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5)
 127                 - int(len)
 128                 + int(lyx::count(cur, cur + len, '|'));
 129         if (n < 0)
 130                 return FL_INVALID;
 131
 132         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 133                 return FL_VALID;
 134
 135         return FL_INVALID;
 136 }