src/frontends/xforms/FormMathsMatrix.C

   1 /**
   2  * \file FormMathsMatrix.C
   3  * Copyright 2001 The LyX Team.
   4  * See the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author Pablo De Napoli, pdenapo@dm.uba.ar
   8  * \author John Levon, moz@compsoc.man.ac.uk
   9  * \author Angus Leeming, a.leeming@ic.ac.uk
  10  */
  11
  12 #include <config.h>
  13
  14 #ifdef __GNUG__
  15 #pragma implementation
  16 #endif
  17
  18 #include <algorithm>
  19
  20 #include "FormMathsMatrix.h"
  21 #include "forms/form_maths_matrix.h"
  22 #include "Dialogs.h"
  23 #include "frontends/LyXView.h"
  24 #include "Lsstream.h"
  25 #include "lyxfunc.h"
  26 #include "support/LAssert.h"
  27 #include "support/lyxalgo.h" // lyx::count
  28 #include FORMS_H_LOCATION
  29
  30 #ifndef CXX_GLOBAL_CSTD
  31 using std::strlen;
  32 #endif
  33
  34
  35 static char h_align_str[80] = "c";
  36 static char v_align_c[] = "tcb";
  37
  38
  39 extern "C" {
  40
  41         static
  42         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  43                                          char const * cur, int c)
  44         {
  45                 lyx::Assert(ob);
  46                 FormMathsMatrix * pre =
  47                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  48                 lyx::Assert(pre);
  49                 return pre->AlignFilter(cur, c);
  50         }
  51
  52 }
  53
  54
  55 FormMathsMatrix::FormMathsMatrix(LyXView * lv, Dialogs * d,
  56                                  FormMathsPanel const & p)
  57         : FormMathsSub(lv, d, p, _("Maths Matrix"), false)
  58 {}
  59
  60
  61 FL_FORM * FormMathsMatrix::form() const
  62 {
  63         if (dialog_.get())
  64                 return dialog_->form;
  65         return 0;
  66 }
  67
  68
  69 void FormMathsMatrix::build()
  70 {
  71         dialog_.reset(build_maths_matrix(this));
  72
  73         fl_addto_choice(dialog_->choice_valign, _("Top | Center | Bottom"));
  74         fl_set_choice(dialog_->choice_valign, 2);
  75         fl_set_input(dialog_->input_halign, h_align_str);
  76         dialog_->input_halign->u_vdata = this;
  77         fl_set_input_filter(dialog_->input_halign,
  78                             C_FormMathsMatrixAlignFilter);
  79         setPrehandler(dialog_->input_halign);
  80
  81         bc().setOK(dialog_->button_ok);
  82         bc().setApply(dialog_->button_apply);
  83         bc().setCancel(dialog_->button_close);
  84
  85         bc().addReadOnly(dialog_->slider_rows);
  86         bc().addReadOnly(dialog_->slider_columns);
  87         bc().addReadOnly(dialog_->choice_valign);
  88         bc().addReadOnly(dialog_->input_halign);
  89 }
  90
  91
  92 void FormMathsMatrix::apply()
  93 {
  94         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  95         char const * sh = fl_get_input(dialog_->input_halign);
  96         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  97         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  98
  99         ostringstream ost;
 100         ost << nx << ' ' << ny << ' ' << c << ' ' << sh;
 101
 102         // remeber gcc 3.1 and lyxstring stringstream before "fixing"
 103         lv_->getLyXFunc()->dispatch(LFUN_INSERT_MATRIX, string(ost.str().c_str()));
 104 }
 105
 106 bool FormMathsMatrix::input(FL_OBJECT * ob, long)
 107 {
 108         if (ob == dialog_->choice_valign ||
 109             ob == dialog_->slider_rows) return true;
 110
 111         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 112         for (int i = 0; i < nx; ++i)
 113                 h_align_str[i] = 'c';
 114
 115         h_align_str[nx] = '\0';
 116
 117         fl_set_input(dialog_->input_halign, h_align_str);
 118         fl_redraw_object(dialog_->input_halign);
 119         return true;
 120 }
 121
 122
 123 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 124 {
 125         size_t len = strlen(cur);
 126
 127         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5) -
 128                 int(len) +
 129                 int(lyx::count(cur, cur + len, '|'));
 130         if (n < 0)
 131                 return FL_INVALID;
 132
 133         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 134                 return FL_VALID;
 135
 136         return FL_INVALID;
 137 }