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 using namespace lyx::support;
  33
  34 #ifndef CXX_GLOBAL_CSTD
  35 using std::strlen;
  36 #endif
  37
  38
  39 static char h_align_str[80] = "c";
  40 static char v_align_c[] = "tcb";
  41
  42
  43 extern "C" {
  44
  45         static
  46         int C_FormMathsMatrixAlignFilter(FL_OBJECT * ob, char const *,
  47                                          char const * cur, int c)
  48         {
  49                 Assert(ob);
  50                 FormMathsMatrix * pre =
  51                         static_cast<FormMathsMatrix *>(ob->u_vdata);
  52                 Assert(pre);
  53                 return pre->AlignFilter(cur, c);
  54         }
  55
  56 }
  57
  58
  59 typedef FormController<ControlMath, FormView<FD_maths_matrix> > base_class;
  60
  61 FormMathsMatrix::FormMathsMatrix(Dialog & parent)
  62         : base_class(parent, _("Math Matrix"), false)
  63 {}
  64
  65
  66 void FormMathsMatrix::build()
  67 {
  68         dialog_.reset(build_maths_matrix(this));
  69
  70         fl_addto_choice(dialog_->choice_valign,
  71                         _("Top | Middle | Bottom").c_str());
  72         fl_set_choice(dialog_->choice_valign, 2);
  73         fl_set_input(dialog_->input_halign, h_align_str);
  74         dialog_->input_halign->u_vdata = this;
  75         fl_set_input_filter(dialog_->input_halign,
  76                             C_FormMathsMatrixAlignFilter);
  77         setPrehandler(dialog_->input_halign);
  78
  79         bcview().setOK(dialog_->button_ok);
  80         bcview().setApply(dialog_->button_apply);
  81         bcview().setCancel(dialog_->button_close);
  82
  83         bcview().addReadOnly(dialog_->slider_rows);
  84         bcview().addReadOnly(dialog_->slider_columns);
  85         bcview().addReadOnly(dialog_->choice_valign);
  86         bcview().addReadOnly(dialog_->input_halign);
  87 }
  88
  89
  90 void FormMathsMatrix::apply()
  91 {
  92         char const c = v_align_c[fl_get_choice(dialog_->choice_valign) - 1];
  93         char const * sh = fl_get_input(dialog_->input_halign);
  94         int const nx = int(fl_get_slider_value(dialog_->slider_columns) + 0.5);
  95         int const ny = int(fl_get_slider_value(dialog_->slider_rows) + 0.5);
  96
  97         ostringstream os;
  98         os << nx << ' ' << ny << ' ' << c << ' ' << sh;
  99         controller().dispatchMatrix(STRCONV(os.str()));
 100 }
 101
 102
 103 void FormMathsMatrix::update()
 104 {
 105         bc().valid();
 106 }
 107
 108
 109 ButtonPolicy::SMInput FormMathsMatrix::input(FL_OBJECT * ob, long)
 110 {
 111         if (ob == dialog_->choice_valign ||
 112             ob == dialog_->slider_rows) return ButtonPolicy::SMI_VALID;
 113
 114         int const nx = int(fl_get_slider_value(dialog_->slider_columns)+0.5);
 115         for (int i = 0; i < nx; ++i)
 116                 h_align_str[i] = 'c';
 117
 118         h_align_str[nx] = '\0';
 119
 120         fl_set_input(dialog_->input_halign, h_align_str);
 121         fl_redraw_object(dialog_->input_halign);
 122         return ButtonPolicy::SMI_VALID;
 123 }
 124
 125
 126 int FormMathsMatrix::AlignFilter(char const * cur, int c)
 127 {
 128         size_t const len = strlen(cur);
 129
 130         int const n = int(fl_get_slider_value(dialog_->slider_columns) + 0.5)
 131                 - int(len)
 132                 + int(lyx::count(cur, cur + len, '|'));
 133         if (n < 0)
 134                 return FL_INVALID;
 135
 136         if (c == 'c' || c == 'l' || c == 'r' || c == '|')
 137                 return FL_VALID;
 138
 139         return FL_INVALID;
 140 }