src/frontends/xforms/FormVSpace.C

   1 /**
   2  * \file FormVSpace.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  * \author Jürgen Vigna
   8  * \author Rob Lahaye
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "FormVSpace.h"
  16 #include "ControlVSpace.h"
  17 #include "forms/form_vspace.h"
  18
  19 #include "checkedwidgets.h"
  20 #include "input_validators.h"
  21 #include "Tooltips.h"
  22 #include "xforms_helpers.h"
  23 #include "xformsBC.h"
  24
  25 #include "controllers/helper_funcs.h"
  26
  27 #include "lyxrc.h" // to set the deafult length values
  28 #include "Spacing.h"
  29 #include "vspace.h"
  30
  31 #include "support/lstrings.h"
  32 #include "support/tostr.h"
  33
  34 #include "lyx_forms.h"
  35
  36 using lyx::support::contains_functor;
  37 using lyx::support::getStringFromVector;
  38 using lyx::support::rtrim;
  39
  40 using std::bind2nd;
  41 using std::remove_if;
  42
  43 using std::vector;
  44 using std::string;
  45
  46
  47 namespace {
  48
  49 string defaultUnit("cm");
  50
  51 void validateVSpaceWidgets(FL_OBJECT * choice_type, FL_OBJECT * input_length)
  52 {
  53         // Paranoia check!
  54         BOOST_ASSERT(choice_type  && choice_type->objclass  == FL_CHOICE &&
  55                      input_length && input_length->objclass == FL_INPUT);
  56
  57         if (fl_get_choice(choice_type) != 6)
  58                 return;
  59
  60         // If a vspace kind is "Length" but there's no text in
  61         // the input field, insert nothing.
  62         string const input = rtrim(getString(input_length));
  63         if (input.empty())
  64                 return;
  65 }
  66
  67
  68 VSpace const setVSpaceFromWidgets(FL_OBJECT * choice_type,
  69                                   FL_OBJECT * input_length,
  70                                   FL_OBJECT * choice_length,
  71                                   bool keep)
  72 {
  73         // Paranoia check!
  74         BOOST_ASSERT(choice_type   && choice_type->objclass   == FL_CHOICE &&
  75                      input_length  && input_length->objclass  == FL_INPUT &&
  76                      choice_length && choice_length->objclass == FL_CHOICE);
  77
  78         VSpace space;
  79
  80         switch (fl_get_choice(choice_type)) {
  81         case 1:
  82                 space = VSpace(VSpace::DEFSKIP);
  83                 break;
  84         case 2:
  85                 space = VSpace(VSpace::SMALLSKIP);
  86                 break;
  87         case 3:
  88                 space = VSpace(VSpace::MEDSKIP);
  89                 break;
  90         case 4:
  91                 space = VSpace(VSpace::BIGSKIP);
  92                 break;
  93         case 5:
  94                 space = VSpace(VSpace::VFILL);
  95                 break;
  96         case 6:
  97                 space = VSpace(LyXGlueLength(
  98                         getLengthFromWidgets(input_length, choice_length)));
  99                 break;
 100         }
 101
 102         space.setKeep(keep);
 103         return space;
 104 }
 105
 106
 107 void setWidgetsFromVSpace(VSpace const & space,
 108                           FL_OBJECT * choice_type,
 109                           FL_OBJECT * input_length,
 110                           FL_OBJECT * choice_length,
 111                           FL_OBJECT * check_keep)
 112 {
 113         // Paranoia check!
 114         BOOST_ASSERT(choice_type   && choice_type->objclass   == FL_CHOICE &&
 115                      input_length  && input_length->objclass  == FL_INPUT &&
 116                      choice_length && choice_length->objclass == FL_CHOICE &&
 117                      check_keep    && check_keep->objclass   == FL_CHECKBUTTON);
 118
 119         int pos = 1;
 120         switch (space.kind()) {
 121         case VSpace::DEFSKIP:
 122                 pos = 1;
 123                 break;
 124         case VSpace::SMALLSKIP:
 125                 pos = 2;
 126                 break;
 127         case VSpace::MEDSKIP:
 128                 pos = 3;
 129                 break;
 130         case VSpace::BIGSKIP:
 131                 pos = 4;
 132                 break;
 133         case VSpace::VFILL:
 134                 pos = 5;
 135                 break;
 136         case VSpace::LENGTH:
 137                 pos = 6;
 138                 break;
 139         }
 140         fl_set_choice(choice_type, pos);
 141         fl_set_button(check_keep, space.keep());
 142
 143         bool const custom_vspace = space.kind() == VSpace::LENGTH;
 144         if (custom_vspace) {
 145                 string const length = space.length().asString();
 146                 updateWidgetsFromLengthString(input_length, choice_length,
 147                                               length, defaultUnit);
 148         } else {
 149                 fl_set_input(input_length, "");
 150                 fl_set_choice_text(choice_length, defaultUnit.c_str());
 151         }
 152 }
 153
 154 } // namespace anon
 155
 156
 157 typedef FormController<ControlVSpace, FormView<FD_vspace> > base_class;
 158
 159 FormVSpace::FormVSpace(Dialog & parent)
 160         : base_class(parent, _("VSpace Settings"))
 161 {}
 162
 163
 164 void FormVSpace::build()
 165 {
 166         // the tabbed folder
 167         dialog_.reset(build_vspace(this));
 168
 169         // Manage the ok, apply, restore and cancel/close buttons
 170         bcview().setOK(dialog_->button_ok);
 171         bcview().setApply(dialog_->button_apply);
 172         bcview().setCancel(dialog_->button_close);
 173         bcview().setRestore(dialog_->button_restore);
 174
 175         // disable for read-only documents
 176         bcview().addReadOnly(dialog_->choice_space);
 177         bcview().addReadOnly(dialog_->input_space);
 178         bcview().addReadOnly(dialog_->choice_unit_space);
 179
 180         // check validity of "length + unit" input.
 181         // If invalid, the label of input_space is displayed in red.
 182         addCheckedGlueLength(bcview(),
 183                              dialog_->input_space,
 184                              dialog_->input_space);
 185
 186         // trigger an input event for cut&paste with middle mouse button.
 187         setPrehandler(dialog_->input_space);
 188
 189         fl_set_input_return(dialog_->input_space, FL_RETURN_CHANGED);
 190
 191         string const spacing =
 192                 _("DefSkip|SmallSkip|MedSkip|BigSkip|VFill|Length");
 193         fl_addto_choice(dialog_->choice_space, spacing.c_str());
 194
 195         // Create the contents of the unit choices; don't include the "%" terms.
 196         vector<string> units_vec = getLatexUnits();
 197         vector<string>::iterator del =
 198                 remove_if(units_vec.begin(), units_vec.end(),
 199                           bind2nd(contains_functor(), "%"));
 200         units_vec.erase(del, units_vec.end());
 201
 202         string const units = getStringFromVector(units_vec, "|");
 203         fl_addto_choice(dialog_->choice_unit_space, units.c_str());
 204
 205         // set up the tooltips
 206         string str = _("Additional vertical space.");
 207         tooltips().init(dialog_->choice_space, str);
 208
 209         // set default unit for custom length
 210         switch (lyxrc.default_papersize) {
 211         case PAPER_DEFAULT:
 212         case PAPER_USLETTER:
 213         case PAPER_LEGALPAPER:
 214         case PAPER_EXECUTIVEPAPER:
 215                 defaultUnit = "in";
 216                 break;
 217         case PAPER_A3PAPER:
 218         case PAPER_A4PAPER:
 219         case PAPER_A5PAPER:
 220         case PAPER_B5PAPER:
 221                 defaultUnit = "cm";
 222                 break;
 223         }
 224 }
 225
 226
 227 void FormVSpace::apply()
 228 {
 229         // If a vspace choice is "Length" but there's no text in
 230         // the input field, insert nothing.
 231         validateVSpaceWidgets(dialog_->choice_space, dialog_->input_space);
 232
 233         VSpace const space =
 234                 setVSpaceFromWidgets(dialog_->choice_space,
 235                                      dialog_->input_space,
 236                                      dialog_->choice_unit_space,
 237                                      fl_get_button(dialog_->check_keep));
 238
 239         controller().params() = space;
 240 }
 241
 242
 243 void FormVSpace::update()
 244 {
 245         setWidgetsFromVSpace(controller().params(),
 246                              dialog_->choice_space,
 247                              dialog_->input_space,
 248                              dialog_->choice_unit_space,
 249                              dialog_->check_keep);
 250
 251         bool const custom_length =
 252                 fl_get_choice(dialog_->choice_space) == 6;
 253         setEnabled(dialog_->input_space, custom_length);
 254         setEnabled(dialog_->choice_unit_space, custom_length);
 255 }
 256
 257
 258 ButtonPolicy::SMInput FormVSpace::input(FL_OBJECT * ob, long)
 259 {
 260         // Enable input when custom length is chosen,
 261         // disable 'keep' when no space is chosen
 262         if (ob == dialog_->choice_space) {
 263                 bool const custom_length =
 264                         fl_get_choice(dialog_->choice_space) == 6;
 265                 setEnabled(dialog_->input_space, custom_length);
 266                 setEnabled(dialog_->choice_unit_space, custom_length);
 267         }
 268         return ButtonPolicy::SMI_VALID;
 269 }