src/frontends/xforms/FormMathsMatrix.C

   1 /**
   2  * \file FormMathsMatrix.C
   3  * See the file COPYING.
   4  *
   5  * \author Alejandro Aguilar Sierra
   6  * \author Pablo De Napoli
   7  * \author John Levon
   8  * \author Angus Leeming
   9  *
  10  * Full author contact details are available in file CREDITS
  11  */
  12
  13 #include <config.h>
  14
  15 #ifdef __GNUG__
  16 #pragma implementation
  17 #endif
  18
  19 #include "FormMathsMatrix.h"
  20 #include "forms/form_maths_matrix.h"
  21
  22 #include "funcrequest.h"
  23 #include "lyxfunc.h"
  24
  25 #include "frontends/LyXView.h"
  26
  27 #include "support/LAssert.h"
  28 #include "support/lyxalgo.h" // lyx::count
  29
  30 #include "Lsstream.h"
  31
  32 #include FORMS_H_LOCATION
  33
  34 #include <algorithm>
  35
  36 #ifndef CXX_GLOBAL_CSTD
  37 using std::strlen;
  38 #endif
  39
  40
  41 static char h_align_str[80] = "c";
  42 static char v_align_c[] = "tcb";
  43
  44
  45 extern "C" {
  46
  47         static
  48         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  49                                          char const * cur, int c)
  50         {
  51                 lyx::Assert(ob);
  52                 FormMathsMatrix * pre =
  53                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  54                 lyx::Assert(pre);
  55                 return pre->AlignFilter(cur, c);
  56         }
  57
  58 }
  59
  60
  61 FormMathsMatrix::FormMathsMatrix(LyXView & lv, Dialogs & d,
  62                                  FormMathsPanel const & p)
  63         : FormMathsSub(lv, d, p, _("Maths Matrix"), false)
  64 {}
  65
  66
  67 FL_FORM * FormMathsMatrix::form() const
  68 {
  69         if (dialog_.get())
  70                 return dialog_->form;
  71         return 0;
  72 }
  73
  74
  75 void FormMathsMatrix::build()
  76 {
  77         dialog_.reset(build_maths_matrix(this));
  78
  79         fl_addto_choice(dialog_->choice_valign, _("Top | Center | Bottom"));
  80         fl_set_choice(dialog_->choice_valign, 2);
  81         fl_set_input(dialog_->input_halign, h_align_str);
  82         dialog_->input_halign->u_vdata = this;
  83         fl_set_input_filter(dialog_->input_halign,
  84                             C_FormMathsMatrixAlignFilter);
  85         setPrehandler(dialog_->input_halign);
  86
  87         bc().setOK(dialog_->button_ok);
  88         bc().setApply(dialog_->button_apply);
  89         bc().setCancel(dialog_->button_close);
  90
  91         bc().addReadOnly(dialog_->slider_rows);
  92         bc().addReadOnly(dialog_->slider_columns);
  93         bc().addReadOnly(dialog_->choice_valign);
  94         bc().addReadOnly(dialog_->input_halign);
  95 }
  96
  97
  98 void FormMathsMatrix::apply()
  99 {
 100         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
 101         char const * sh = fl_get_input(dialog_->input_halign);
 102         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
 103         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
 104
 105         ostringstream os;
 106         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
 107
 108         lv_.dispatch(FuncRequest(LFUN_INSERT_MATRIX, os.str().c_str()));
 109 }
 110
 111
 112 bool FormMathsMatrix::input(FL_OBJECT * ob, long)
 113 {
 114         if (ob == dialog_->choice_valign ||
 115             ob == dialog_->slider_rows) return true;
 116
 117         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 118         for (int i = 0; i < nx; ++i)
 119                 h_align_str[i] = 'c';
 120
 121         h_align_str[nx] = '\0';
 122
 123         fl_set_input(dialog_->input_halign, h_align_str);
 124         fl_redraw_object(dialog_->input_halign);
 125         return true;
 126 }
 127
 128
 129 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 130 {
 131         size_t const len = strlen(cur);
 132
 133         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5)
 134                 - int(len)
 135                 + int(lyx::count(cur, cur + len, '|'));
 136         if (n < 0)
 137                 return FL_INVALID;
 138
 139         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 140                 return FL_VALID;
 141
 142         return FL_INVALID;
 143 }