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