src/frontends/xforms/FormMathsDelim.C

   1 /**
   2  * \file FormMathsDelim.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 "FormMathsDelim.h"
  17 #include "forms/form_maths_delim.h"
  18 #include "ControlMath.h"
  19
  20 #include "bmtable.h"
  21 #include "xformsBC.h"
  22
  23 #include "controllers/ButtonController.h"
  24
  25 #include <sstream>
  26
  27 using std::ostringstream;
  28
  29 #include "delim.xbm"
  30 #include "delim0.xpm"
  31 #include "delim1.xpm"
  32
  33 namespace lyx {
  34 namespace frontend {
  35
  36 namespace {
  37
  38 int const delim_rversion[] = {
  39         1,1,3,3,4,5,7,7,9,9,10,11,
  40         3,13,15,15,16,17,19,19,20,21,22
  41 };
  42 int const delim_size =
  43         sizeof(delim_rversion) / sizeof(delim_rversion[0]);
  44
  45 char const * delim_values[] = {
  46         "(", ")", "lceil",  "rceil",  "uparrow",  "Uparrow",
  47         "[", "]", "lfloor", "rfloor", "updownarrow", "Updownarrow",
  48         "{", "}",  "/", "backslash",  "downarrow",  "Downarrow",
  49         "langle",  "rangle", "|", "Vert", ".", 0
  50 };
  51
  52
  53 } // namespace anon
  54
  55
  56 typedef FormController<ControlMath, FormView<FD_maths_delim> > base_class;
  57
  58 FormMathsDelim::FormMathsDelim(Dialog & parent)
  59         : base_class(parent, _("Math Delimiters"), false)
  60 {}
  61
  62
  63 void FormMathsDelim::build()
  64 {
  65         dialog_.reset(build_maths_delim(this));
  66
  67         fl_set_button(dialog_->radio_left, 1);
  68         // Initialize button_pix to "()" as found in images/delim0.xpm:
  69         fl_set_pixmap_data(dialog_->button_pix, const_cast<char**>(delim0));
  70         dialog_->radio_left->u_ldata = 0;
  71         dialog_->radio_right->u_ldata = 1;
  72         //dialog_->radio_both->u_ldata = 2;
  73
  74         fl_set_bmtable_data(dialog_->bmtable, 12, 2,
  75                             delim_width, delim_height, delim_bits);
  76         fl_set_bmtable_maxitems(dialog_->bmtable, 23);
  77
  78         bcview().setOK(dialog_->button_ok);
  79         bcview().setApply(dialog_->button_apply);
  80         bcview().setCancel(dialog_->button_close);
  81
  82         bcview().addReadOnly(dialog_->bmtable);
  83         bcview().addReadOnly(dialog_->radio_right);
  84         bcview().addReadOnly(dialog_->radio_left);
  85         bcview().addReadOnly(dialog_->radio_both);
  86         bcview().addReadOnly(dialog_->button_pix);
  87 }
  88
  89
  90 void FormMathsDelim::apply()
  91 {
  92         int const left  = int(dialog_->radio_left->u_ldata);
  93         int const right = int(dialog_->radio_right->u_ldata);
  94
  95         ostringstream os;
  96         os << delim_values[left] << ' ' << delim_values[right];
  97         controller().dispatchDelim(os.str());
  98 }
  99
 100
 101 void FormMathsDelim::update()
 102 {
 103         bc().valid();
 104 }
 105
 106
 107 ButtonPolicy::SMInput FormMathsDelim::input(FL_OBJECT *, long)
 108 {
 109         int left = int(dialog_->radio_left->u_ldata);
 110         int right= int(dialog_->radio_right->u_ldata);
 111         int const side = (fl_get_button(dialog_->radio_right) != 0);
 112
 113         int const i = fl_get_bmtable(dialog_->bmtable);
 114         int const button = fl_get_bmtable_numb(dialog_->bmtable);
 115         bool const both = (button == FL_MIDDLE_MOUSE ||
 116                            fl_get_button(dialog_->radio_both) != 0);
 117
 118         if (i >= 0) {
 119                 if (side || (button == FL_RIGHT_MOUSE))
 120                         right = i;
 121                 else {
 122                         left = i;
 123                         if (both) {
 124                                 right = delim_rversion[i];
 125                                 // Add left delimiter in "both" case if right one was pressed:
 126                                 for (int j = 0; j < delim_size; ++j) {
 127                                         if (delim_rversion[j] == left) {
 128                                                 right = left;
 129                                                 left = j;
 130                                         }
 131                                 }
 132                         }
 133                 }
 134         }
 135
 136         // Re-initialize button_pix to solid blue
 137         // (not elegant but works, MV 24.5.2002)
 138         fl_free_pixmap_pixmap(dialog_->button_pix);
 139         fl_set_pixmap_data(dialog_->button_pix, const_cast<char**>(delim1));
 140         Pixmap p1;
 141         fl_get_pixmap_pixmap(dialog_->button_pix, &p1, 0);
 142
 143         fl_draw_bmtable_item(dialog_->bmtable, left, p1, 0, 0);
 144         fl_draw_bmtable_item(dialog_->bmtable, right, p1, 16, 0);
 145         fl_redraw_object(dialog_->button_pix);
 146
 147         dialog_->radio_left->u_ldata  = left;
 148         dialog_->radio_right->u_ldata = right;
 149
 150         return ButtonPolicy::SMI_VALID;
 151 }
 152
 153 } // namespace frontend
 154 } // namespace lyx