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 #include "FormMathsMatrix.h"
  17 #include "forms/form_maths_matrix.h"
  18 #include "ControlMath.h"
  19
  20 #include "xformsBC.h"
  21
  22 #include "controllers/ButtonController.h"
  23
  24 #include "support/LAssert.h"
  25 #include "support/lyxalgo.h" // lyx::count
  26
  27 #include "lyx_forms.h"
  28
  29 #include "support/std_sstream.h"
  30
  31 using namespace lyx::support;
  32
  33 #ifndef CXX_GLOBAL_CSTD
  34 using std::strlen;
  35 #endif
  36
  37
  38 static char h_align_str[80] = "c";
  39 static char v_align_c[] = "tcb";
  40
  41
  42 extern "C" {
  43
  44         static
  45         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  46                                          char const * cur, int c)
  47         {
  48                 Assert(ob);
  49                 FormMathsMatrix * pre =
  50                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  51                 Assert(pre);
  52                 return pre->AlignFilter(cur, c);
  53         }
  54
  55 }
  56
  57
  58 typedef FormController<ControlMath, FormView<FD_maths_matrix> > base_class;
  59
  60 FormMathsMatrix::FormMathsMatrix(Dialog & parent)
  61         : base_class(parent, _("Math Matrix"), false)
  62 {}
  63
  64
  65 void FormMathsMatrix::build()
  66 {
  67         dialog_.reset(build_maths_matrix(this));
  68
  69         fl_addto_choice(dialog_->choice_valign,
  70                         _("Top | Middle | Bottom").c_str());
  71         fl_set_choice(dialog_->choice_valign, 2);
  72         fl_set_input(dialog_->input_halign, h_align_str);
  73         dialog_->input_halign->u_vdata = this;
  74         fl_set_input_filter(dialog_->input_halign,
  75                             C_FormMathsMatrixAlignFilter);
  76         setPrehandler(dialog_->input_halign);
  77
  78         bcview().setOK(dialog_->button_ok);
  79         bcview().setApply(dialog_->button_apply);
  80         bcview().setCancel(dialog_->button_close);
  81
  82         bcview().addReadOnly(dialog_->slider_rows);
  83         bcview().addReadOnly(dialog_->slider_columns);
  84         bcview().addReadOnly(dialog_->choice_valign);
  85         bcview().addReadOnly(dialog_->input_halign);
  86 }
  87
  88
  89 void FormMathsMatrix::apply()
  90 {
  91         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  92         char const * sh = fl_get_input(dialog_->input_halign);
  93         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  94         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  95
  96         ostringstream os;
  97         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
  98         controller().dispatchMatrix(STRCONV(os.str()));
  99 }
 100
 101
 102 void FormMathsMatrix::update()
 103 {
 104         bc().valid();
 105 }
 106
 107
 108 ButtonPolicy::SMInput FormMathsMatrix::input(FL_OBJECT * ob, long)
 109 {
 110         if (ob == dialog_->choice_valign ||
 111             ob == dialog_->slider_rows) return ButtonPolicy::SMI_VALID;
 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 ButtonPolicy::SMI_VALID;
 122 }
 123
 124
 125 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 126 {
 127         size_t const 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 }