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
  17 #include "FormMathsMatrix.h"
  18 #include "forms/form_maths_matrix.h"
  19 #include "ControlMath.h"
  20 #include "xformsBC.h"
  21 #include "ButtonController.h"
  22
  23 #include "support/LAssert.h"
  24 #include "support/lyxalgo.h" // lyx::count
  25
  26 #include "Lsstream.h"
  27
  28 #include "lyx_forms.h"
  29
  30 #include <algorithm>
  31
  32 #ifndef CXX_GLOBAL_CSTD
  33 using std::strlen;
  34 #endif
  35
  36
  37 static char h_align_str[80] = "c";
  38 static char v_align_c[] = "tcb";
  39
  40
  41 extern "C" {
  42
  43         static
  44         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  45                                          char const * cur, int c)
  46         {
  47                 lyx::Assert(ob);
  48                 FormMathsMatrix * pre =
  49                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  50                 lyx::Assert(pre);
  51                 return pre->AlignFilter(cur, c);
  52         }
  53
  54 }
  55
  56
  57 typedef FormCB<ControlMathSub, FormDB<FD_maths_matrix> > base_class;
  58
  59 FormMathsMatrix::FormMathsMatrix()
  60         : base_class(_("Math Matrix"), false)
  61 {}
  62
  63
  64 void FormMathsMatrix::build()
  65 {
  66         dialog_.reset(build_maths_matrix(this));
  67
  68         fl_addto_choice(dialog_->choice_valign, _("Top | Center | Bottom"));
  69         fl_set_choice(dialog_->choice_valign, 2);
  70         fl_set_input(dialog_->input_halign, h_align_str);
  71         dialog_->input_halign->u_vdata = this;
  72         fl_set_input_filter(dialog_->input_halign,
  73                             C_FormMathsMatrixAlignFilter);
  74         setPrehandler(dialog_->input_halign);
  75
  76         bcview().setOK(dialog_->button_ok);
  77         bcview().setApply(dialog_->button_apply);
  78         bcview().setCancel(dialog_->button_close);
  79
  80         bcview().addReadOnly(dialog_->slider_rows);
  81         bcview().addReadOnly(dialog_->slider_columns);
  82         bcview().addReadOnly(dialog_->choice_valign);
  83         bcview().addReadOnly(dialog_->input_halign);
  84 }
  85
  86
  87 void FormMathsMatrix::apply()
  88 {
  89         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  90         char const * sh = fl_get_input(dialog_->input_halign);
  91         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  92         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  93
  94         ostringstream os;
  95         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
  96         controller().dispatchFunc(LFUN_INSERT_MATRIX, STRCONV(os.str()));
  97 }
  98
  99
 100 void FormMathsMatrix::update()
 101 {
 102         bc().valid();
 103 }
 104
 105
 106 ButtonPolicy::SMInput FormMathsMatrix::input(FL_OBJECT * ob, long)
 107 {
 108         if (ob == dialog_->choice_valign ||
 109             ob == dialog_->slider_rows) return ButtonPolicy::SMI_VALID;
 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 ButtonPolicy::SMI_VALID;
 120 }
 121
 122
 123 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 124 {
 125         size_t const 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 }