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