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/lyxalgo.h" // lyx::count
  25
  26 #include "lyx_forms.h"
  27
  28 #include <sstream>
  29
  30
  31 using std::ostringstream;
  32
  33 #ifndef CXX_GLOBAL_CSTD
  34 using std::strlen;
  35 #endif
  36
  37 namespace lyx {
  38 namespace frontend {
  39
  40 namespace {
  41
  42 char h_align_str[80] = "c";
  43 char v_align_c[] = "tcb";
  44
  45
  46 extern "C"
  47 int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  48                                  char const * cur, int c)
  49 {
  50         BOOST_ASSERT(ob);
  51         FormMathsMatrix * pre =
  52                 static_cast<FormMathsMatrix *>(ob->u_vdata);
  53         BOOST_ASSERT(pre);
  54         return pre->AlignFilter(cur, c);
  55 }
  56
  57 } // namespace anon
  58
  59
  60 typedef FormController<ControlMath, FormView<FD_maths_matrix> > base_class;
  61
  62 FormMathsMatrix::FormMathsMatrix(Dialog & parent)
  63         : base_class(parent, _("Math Matrix"), false)
  64 {}
  65
  66
  67 void FormMathsMatrix::build()
  68 {
  69         dialog_.reset(build_maths_matrix(this));
  70
  71         fl_addto_choice(dialog_->choice_valign,
  72                         _("Top | Middle | Bottom").c_str());
  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         setPrehandler(dialog_->input_halign);
  79
  80         bcview().setOK(dialog_->button_ok);
  81         bcview().setApply(dialog_->button_apply);
  82         bcview().setCancel(dialog_->button_close);
  83
  84         bcview().addReadOnly(dialog_->slider_rows);
  85         bcview().addReadOnly(dialog_->slider_columns);
  86         bcview().addReadOnly(dialog_->choice_valign);
  87         bcview().addReadOnly(dialog_->input_halign);
  88 }
  89
  90
  91 void FormMathsMatrix::apply()
  92 {
  93         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  94         char const * sh = fl_get_input(dialog_->input_halign);
  95         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  96         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  97
  98         ostringstream os;
  99         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
 100         controller().dispatchMatrix(os.str());
 101 }
 102
 103
 104 void FormMathsMatrix::update()
 105 {
 106         bc().valid();
 107 }
 108
 109
 110 ButtonPolicy::SMInput FormMathsMatrix::input(FL_OBJECT * ob, long)
 111 {
 112         if (ob == dialog_->choice_valign ||
 113             ob == dialog_->slider_rows) return ButtonPolicy::SMI_VALID;
 114
 115         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 116         for (int i = 0; i < nx; ++i)
 117                 h_align_str[i] = 'c';
 118
 119         h_align_str[nx] = '\0';
 120
 121         fl_set_input(dialog_->input_halign, h_align_str);
 122         fl_redraw_object(dialog_->input_halign);
 123         return ButtonPolicy::SMI_VALID;
 124 }
 125
 126
 127 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 128 {
 129         size_t const len = strlen(cur);
 130
 131         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5)
 132                 - int(len)
 133                 + int(count(cur, cur + len, '|'));
 134         if (n < 0)
 135                 return FL_INVALID;
 136
 137         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 138                 return FL_VALID;
 139
 140         return FL_INVALID;
 141 }
 142
 143 } // namespace frontend
 144 } // namespace lyx