src/mathed/InsetMathSpace.cpp

   1 /**
   2  * \file InsetMathSpace.cpp
   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  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathSpace.h"
  14 #include "MathData.h"
  15 #include "MathFactory.h"
  16 #include "MathStream.h"
  17 #include "MathSupport.h"
  18
  19 #include "BufferView.h"
  20 #include "Cursor.h"
  21 #include "FuncRequest.h"
  22 #include "FuncStatus.h"
  23 #include "LaTeXFeatures.h"
  24
  25 #include "insets/InsetSpace.h"
  26
  27 #include "frontends/Application.h"
  28 #include "frontends/Painter.h"
  29
  30 #include "support/lassert.h"
  31
  32 using namespace std;
  33
  34 namespace lyx {
  35
  36 namespace {
  37
  38 struct SpaceInfo {
  39         string name;
  40         int width;
  41         InsetSpaceParams::Kind kind;
  42         bool negative;
  43         bool visible;
  44         bool custom;
  45 };
  46
  47 SpaceInfo space_info[] = {
  48         // name           width kind                         negative visible custom
  49         {"!",              6,   InsetSpaceParams::NEGTHIN,   true,    true,   false},
  50         {"negthinspace",   6,   InsetSpaceParams::NEGTHIN,   true,    true,   false},
  51         {"negmedspace",    8,   InsetSpaceParams::NEGMEDIUM, true,    true,   false},
  52         {"negthickspace", 10,   InsetSpaceParams::NEGTHICK,  true,    true,   false},
  53         {",",              6,   InsetSpaceParams::THIN,      false,   true,   false},
  54         {"thinspace",      6,   InsetSpaceParams::THIN,      false,   true,   false},
  55         {":",              8,   InsetSpaceParams::MEDIUM,    false,   true,   false},
  56         {"medspace",       8,   InsetSpaceParams::MEDIUM,    false,   true,   false},
  57         {";",             10,   InsetSpaceParams::THICK,     false,   true,   false},
  58         {"thickspace",    10,   InsetSpaceParams::THICK,     false,   true,   false},
  59         {"enskip",        10,   InsetSpaceParams::ENSKIP,    false,   true,   false},
  60         {"quad",          20,   InsetSpaceParams::QUAD,      false,   true,   false},
  61         {"qquad",         40,   InsetSpaceParams::QQUAD,     false,   true,   false},
  62         {"lyxnegspace",   -2,   InsetSpaceParams::NEGTHIN,   true,    false,  false},
  63         {"lyxposspace",    2,   InsetSpaceParams::THIN,      false,   false,  false},
  64         {"hspace",         0,   InsetSpaceParams::CUSTOM,    false,   true,   true},
  65 };
  66
  67 int const nSpace = sizeof(space_info)/sizeof(SpaceInfo);
  68 int const defaultSpace = 4;
  69
  70 } // anon namespace
  71
  72 InsetMathSpace::InsetMathSpace()
  73         : space_(defaultSpace)
  74 {
  75 }
  76
  77
  78 InsetMathSpace::InsetMathSpace(string const & name, string const & length)
  79         : space_(defaultSpace)
  80 {
  81         for (int i = 0; i < nSpace; ++i)
  82                 if (space_info[i].name == name) {
  83                         space_ = i;
  84                         break;
  85                 }
  86         if (space_info[space_].custom) {
  87                 length_ = Length(length);
  88                 if (length_.zero() || length_.empty()) {
  89                         length_.value(1.0);
  90                         length_.unit(Length::EM);
  91                 }
  92         }
  93 }
  94
  95
  96 InsetMathSpace::InsetMathSpace(Length const & length)
  97         : space_(defaultSpace), length_(length)
  98 {
  99         for (int i = 0; i < nSpace; ++i)
 100                 if (space_info[i].name == "hspace") {
 101                         space_ = i;
 102                         break;
 103                 }
 104 }
 105
 106
 107 InsetMathSpace::~InsetMathSpace()
 108 {
 109         hideDialogs("mathspace", this);
 110 }
 111
 112
 113 Inset * InsetMathSpace::clone() const
 114 {
 115         return new InsetMathSpace(*this);
 116 }
 117
 118
 119 void InsetMathSpace::metrics(MetricsInfo & mi, Dimension & dim) const
 120 {
 121         dim.asc = 4;
 122         dim.des = 0;
 123         if (space_info[space_].custom)
 124                 dim.wid = abs(length_.inPixels(
 125                                 mi.base.textwidth,
 126                                 mathed_char_width(mi.base.font, 'M')));
 127         else
 128                 dim.wid = space_info[space_].width;
 129 }
 130
 131
 132 void InsetMathSpace::draw(PainterInfo & pi, int x, int y) const
 133 {
 134         // Sadly, HP-UX CC can't handle that kind of initialization.
 135         // XPoint p[4] = {{++x, y-3}, {x, y}, {x+width-2, y}, {x+width-2, y-3}};
 136         if (!space_info[space_].visible)
 137                 return;
 138
 139         Dimension const dim = dimension(*pi.base.bv);
 140         int xp[4];
 141         int yp[4];
 142         int w = dim.wid;
 143
 144         xp[0] = ++x;        yp[0] = y - 3;
 145         xp[1] = x;          yp[1] = y;
 146         xp[2] = x + w - 2;  yp[2] = y;
 147         xp[3] = x + w - 2;  yp[3] = y - 3;
 148
 149         pi.pain.lines(xp, yp, 4,
 150                         space_info[space_].custom ?
 151                         Color_special :
 152                         (isNegative() ? Color_latex : Color_math));
 153 }
 154
 155
 156 void InsetMathSpace::incSpace()
 157 {
 158         int const oldwidth = space_info[space_].width;
 159         do
 160                 space_ = (space_ + 1) % nSpace;
 161         while ((space_info[space_].width == oldwidth && !space_info[space_].custom) ||
 162                !space_info[space_].visible);
 163         if (space_info[space_].custom && (length_.zero() || length_.empty())) {
 164                 length_.value(1.0);
 165                 length_.unit(Length::EM);
 166         }
 167 }
 168
 169
 170 void InsetMathSpace::validate(LaTeXFeatures & features) const
 171 {
 172         if (space_info[space_].name == "negmedspace" ||
 173             space_info[space_].name == "negthickspace")
 174                 features.require("amsmath");
 175 }
 176
 177
 178 void InsetMathSpace::maple(MapleStream & os) const
 179 {
 180         os << ' ';
 181 }
 182
 183 void InsetMathSpace::mathematica(MathematicaStream & os) const
 184 {
 185         os << ' ';
 186 }
 187
 188
 189 void InsetMathSpace::octave(OctaveStream & os) const
 190 {
 191         os << ' ';
 192 }
 193
 194
 195 void InsetMathSpace::normalize(NormalStream & os) const
 196 {
 197         os << "[space " << int(space_) << "] ";
 198 }
 199
 200
 201 void InsetMathSpace::write(WriteStream & os) const
 202 {
 203         // no MathEnsurer - all kinds work in text and math mode
 204         os << '\\' << space_info[space_].name.c_str();
 205         if (space_info[space_].custom)
 206                 os << '{' << length_.asLatexString().c_str() << '}';
 207         else
 208                 os.pendingSpace(true);
 209 }
 210
 211
 212 string const InsetMathSpace::createDialogStr() const
 213 {
 214         LASSERT(space_info[space_].visible, /**/);
 215         InsetSpaceParams isp(true);
 216         isp.kind = space_info[space_].kind;
 217         isp.length = GlueLength(length_);
 218         return InsetSpace::params2string(isp);
 219 }
 220
 221
 222 docstring InsetMathSpace::contextMenu(BufferView const &, int, int) const
 223 {
 224         return from_ascii("context-mathspace");
 225 }
 226
 227
 228 bool InsetMathSpace::getStatus(Cursor & cur, FuncRequest const & cmd,
 229                                FuncStatus & status) const
 230 {
 231         switch (cmd.action) {
 232         // we handle these
 233         case LFUN_INSET_MODIFY:
 234         case LFUN_INSET_DIALOG_UPDATE:
 235         case LFUN_MOUSE_RELEASE:
 236         case LFUN_MOUSE_PRESS:
 237         case LFUN_MOUSE_MOTION:
 238                 status.setEnabled(true);
 239                 return true;
 240         default:
 241                 bool retval = InsetMath::getStatus(cur, cmd, status);
 242                 return retval;
 243         }
 244 }
 245
 246
 247 void InsetMathSpace::doDispatch(Cursor & cur, FuncRequest & cmd)
 248 {
 249         switch (cmd.action) {
 250         case LFUN_INSET_MODIFY:
 251                 if (cmd.getArg(0) == "mathspace") {
 252                         MathData ar;
 253                         if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
 254                                 *this = *ar[0].nucleus()->asSpaceInset();
 255                                 break;
 256                         }
 257                 }
 258                 cur.undispatched();
 259                 break;
 260
 261         case LFUN_INSET_DIALOG_UPDATE:
 262                 cur.bv().updateDialog("mathspace", createDialogStr());
 263                 break;
 264
 265         case LFUN_MOUSE_RELEASE:
 266                 if (cmd.button() == mouse_button::button1) {
 267                         string const data = createDialogStr();
 268                         cur.bv().showDialog("mathspace", data, this);
 269                         break;
 270                 }
 271                 cur.undispatched();
 272                 break;
 273
 274         case LFUN_MOUSE_PRESS:
 275         case LFUN_MOUSE_MOTION:
 276                 // eat other mouse commands
 277                 break;
 278
 279         default:
 280                 InsetMath::doDispatch(cur, cmd);
 281                 break;
 282         }
 283 }
 284
 285
 286 bool InsetMathSpace::isNegative() const
 287 {
 288         if (space_info[space_].custom)
 289                 return length_.value() < 0;
 290         return space_info[space_].negative;
 291 }
 292
 293 } // namespace lyx