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 #ifdef __GNUG__
  17 #pragma implementation
  18 #endif
  19
  20 #include "FormMathsMatrix.h"
  21 #include "forms/form_maths_matrix.h"
  22 #include "ControlMath.h"
  23 #include "xformsBC.h"
  24
  25 #include "support/LAssert.h"
  26 #include "support/lyxalgo.h" // lyx::count
  27
  28 #include "Lsstream.h"
  29
  30 #include FORMS_H_LOCATION
  31
  32 #include <algorithm>
  33
  34 #ifndef CXX_GLOBAL_CSTD
  35 using std::strlen;
  36 #endif
  37
  38
  39 static char h_align_str[80] = "c";
  40 static char v_align_c[] = "tcb";
  41
  42
  43 extern "C" {
  44
  45         static
  46         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  47                                          char const * cur, int c)
  48         {
  49                 lyx::Assert(ob);
  50                 FormMathsMatrix * pre =
  51                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  52                 lyx::Assert(pre);
  53                 return pre->AlignFilter(cur, c);
  54         }
  55
  56 }
  57
  58
  59 typedef FormCB<ControlMathSub, FormDB<FD_maths_matrix> > base_class;
  60
  61 FormMathsMatrix::FormMathsMatrix()
  62         : base_class(_("Maths Matrix"), false)
  63 {}
  64
  65
  66 void FormMathsMatrix::build()
  67 {
  68         dialog_.reset(build_maths_matrix(this));
  69
  70         fl_addto_choice(dialog_->choice_valign, _("Top | Center | Bottom"));
  71         fl_set_choice(dialog_->choice_valign, 2);
  72         fl_set_input(dialog_->input_halign, h_align_str);
  73         dialog_->input_halign->u_vdata = this;
  74         fl_set_input_filter(dialog_->input_halign,
  75                             C_FormMathsMatrixAlignFilter);
  76         setPrehandler(dialog_->input_halign);
  77
  78         bc().setOK(dialog_->button_ok);
  79         bc().setApply(dialog_->button_apply);
  80         bc().setCancel(dialog_->button_close);
  81
  82         bc().addReadOnly(dialog_->slider_rows);
  83         bc().addReadOnly(dialog_->slider_columns);
  84         bc().addReadOnly(dialog_->choice_valign);
  85         bc().addReadOnly(dialog_->input_halign);
  86 }
  87
  88
  89 void FormMathsMatrix::apply()
  90 {
  91         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  92         char const * sh = fl_get_input(dialog_->input_halign);
  93         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  94         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  95
  96         ostringstream os;
  97         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
  98         controller().dispatchFunc(LFUN_INSERT_MATRIX, STRCONV(os.str()));
  99 }
 100
 101
 102 void FormMathsMatrix::update()
 103 {
 104         bc().valid();
 105 }
 106
 107
 108 ButtonPolicy::SMInput FormMathsMatrix::input(FL_OBJECT * ob, long)
 109 {
 110         if (ob == dialog_->choice_valign ||
 111             ob == dialog_->slider_rows) return ButtonPolicy::SMI_VALID;
 112
 113         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 114         for (int i = 0; i < nx; ++i)
 115                 h_align_str[i] = 'c';
 116
 117         h_align_str[nx] = '\0';
 118
 119         fl_set_input(dialog_->input_halign, h_align_str);
 120         fl_redraw_object(dialog_->input_halign);
 121         return ButtonPolicy::SMI_VALID;
 122 }
 123
 124
 125 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 126 {
 127         size_t const len = strlen(cur);
 128
 129         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5)
 130                 - int(len)
 131                 + int(lyx::count(cur, cur + len, '|'));
 132         if (n < 0)
 133                 return FL_INVALID;
 134
 135         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 136                 return FL_VALID;
 137
 138         return FL_INVALID;
 139 }