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