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
  23 #include "funcrequest.h"
  24 #include "lyxfunc.h"
  25
  26 #include "frontends/LyXView.h"
  27
  28 #include "support/LAssert.h"
  29 #include "support/lyxalgo.h" // lyx::count
  30
  31 #include "Lsstream.h"
  32
  33 #include FORMS_H_LOCATION
  34
  35 #include <algorithm>
  36
  37 #ifndef CXX_GLOBAL_CSTD
  38 using std::strlen;
  39 #endif
  40
  41
  42 static char h_align_str[80] = "c";
  43 static char v_align_c[] = "tcb";
  44
  45
  46 extern "C" {
  47
  48         static
  49         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  50                                          char const * cur, int c)
  51         {
  52                 lyx::Assert(ob);
  53                 FormMathsMatrix * pre =
  54                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  55                 lyx::Assert(pre);
  56                 return pre->AlignFilter(cur, c);
  57         }
  58
  59 }
  60
  61
  62 FormMathsMatrix::FormMathsMatrix(LyXView & lv, Dialogs & d,
  63                                  FormMathsPanel const & p)
  64         : FormMathsSub(lv, d, p, _("Maths Matrix"), false)
  65 {}
  66
  67
  68 FL_FORM * FormMathsMatrix::form() const
  69 {
  70         if (dialog_.get())
  71                 return dialog_->form;
  72         return 0;
  73 }
  74
  75
  76 void FormMathsMatrix::build()
  77 {
  78         dialog_.reset(build_maths_matrix(this));
  79
  80         fl_addto_choice(dialog_->choice_valign, _("Top | Center | Bottom"));
  81         fl_set_choice(dialog_->choice_valign, 2);
  82         fl_set_input(dialog_->input_halign, h_align_str);
  83         dialog_->input_halign->u_vdata = this;
  84         fl_set_input_filter(dialog_->input_halign,
  85                             C_FormMathsMatrixAlignFilter);
  86         setPrehandler(dialog_->input_halign);
  87
  88         bc().setOK(dialog_->button_ok);
  89         bc().setApply(dialog_->button_apply);
  90         bc().setCancel(dialog_->button_close);
  91
  92         bc().addReadOnly(dialog_->slider_rows);
  93         bc().addReadOnly(dialog_->slider_columns);
  94         bc().addReadOnly(dialog_->choice_valign);
  95         bc().addReadOnly(dialog_->input_halign);
  96 }
  97
  98
  99 void FormMathsMatrix::apply()
 100 {
 101         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
 102         char const * sh = fl_get_input(dialog_->input_halign);
 103         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
 104         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
 105
 106         ostringstream os;
 107         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
 108
 109         lv_.dispatch(FuncRequest(LFUN_INSERT_MATRIX, os.str().c_str()));
 110 }
 111
 112
 113 bool FormMathsMatrix::input(FL_OBJECT * ob, long)
 114 {
 115         if (ob == dialog_->choice_valign ||
 116             ob == dialog_->slider_rows) return true;
 117
 118         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 119         for (int i = 0; i < nx; ++i)
 120                 h_align_str[i] = 'c';
 121
 122         h_align_str[nx] = '\0';
 123
 124         fl_set_input(dialog_->input_halign, h_align_str);
 125         fl_redraw_object(dialog_->input_halign);
 126         return true;
 127 }
 128
 129
 130 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 131 {
 132         size_t const len = strlen(cur);
 133
 134         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5)
 135                 - int(len)
 136                 + int(lyx::count(cur, cur + len, '|'));
 137         if (n < 0)
 138                 return FL_INVALID;
 139
 140         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 141                 return FL_VALID;
 142
 143         return FL_INVALID;
 144 }