]> git.lyx.org Git - lyx.git/blobdiff - src/BufferView.C
* InsetMathNest.C (handleFont): avoid crash on undo when
[lyx.git] / src / BufferView.C
index a9148643b7dabfdb4623d7007f93a903f0f999d8..2ff1ec0a0736a88c10920b725bf23ac2072a96af 100644 (file)
@@ -83,10 +83,11 @@ namespace lyx {
 using support::addPath;
 using support::bformat;
 using support::FileFilterList;
+using support::FileName;
 using support::fileSearch;
 using support::isDirWriteable;
+using support::isFileReadable;
 using support::makeDisplayPath;
-using support::makeAbsPath;
 using support::package;
 
 using std::distance;
@@ -123,7 +124,7 @@ BufferView::BufferView()
        : width_(0), height_(0), buffer_(0), wh_(0),
          cursor_(*this),
          multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
-         intl_(new Intl)
+         intl_(new Intl), last_inset_(0)
 {
        xsel_cache_.set = false;
        intl_->initKeyMapper(lyxrc.use_kbmap);
@@ -153,7 +154,7 @@ void BufferView::setBuffer(Buffer * b)
                buffer_->saveCursor(cursor_.selectionBegin(),
                                    cursor_.selectionEnd());
                // current buffer is going to be switched-off, save cursor pos
-               LyX::ref().session().lastFilePos().save(buffer_->fileName(),
+               LyX::ref().session().lastFilePos().save(FileName(buffer_->fileName()),
                        boost::tie(cursor_.pit(), cursor_.pos()) );
        }
 
@@ -197,9 +198,6 @@ void BufferView::setBuffer(Buffer * b)
                }
        }
 
-       // FIXME: in principle, a simple call to updateMetrics(false) should
-       // be enough here. But, for unknown reason, it seems that only the line
-       // of the cursor is updated in the CoordCache.
        if (buffer_)
                updateMetrics(false);    
 
@@ -208,20 +206,11 @@ void BufferView::setBuffer(Buffer * b)
 }
 
 
-bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
+bool BufferView::loadLyXFile(FileName const & filename, bool tolastfiles)
 {
-       // Get absolute path of file and add ".lyx"
-       // to the filename if necessary
-       string s = fileSearch(string(), filename, "lyx");
-
-       bool const found = !s.empty();
-
-       if (!found)
-               s = filename;
-
        // File already open?
-       if (theBufferList().exists(s)) {
-               docstring const file = makeDisplayPath(s, 20);
+       if (theBufferList().exists(filename.absFilename())) {
+               docstring const file = makeDisplayPath(filename.absFilename(), 20);
                docstring text = bformat(_("The document %1$s is already "
                                                     "loaded.\n\nDo you want to revert "
                                                     "to the saved version?"), file);
@@ -229,11 +218,11 @@ bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
                        text, 0, 1,  _("&Revert"), _("&Switch to document"));
 
                if (ret != 0) {
-                       setBuffer(theBufferList().getBuffer(s));
+                       setBuffer(theBufferList().getBuffer(filename.absFilename()));
                        return true;
                }
                // FIXME: should be LFUN_REVERT
-               if (!theBufferList().close(theBufferList().getBuffer(s), false))
+               if (!theBufferList().close(theBufferList().getBuffer(filename.absFilename()), false))
                        return false;
                // Fall through to new load. (Asger)
                buffer_ = 0;
@@ -241,21 +230,21 @@ bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
 
        Buffer * b = 0;
 
-       if (found) {
-               b = theBufferList().newBuffer(s);
-               if (!lyx::loadLyXFile(b, s)) {
+       if (isFileReadable(filename)) {
+               b = theBufferList().newBuffer(filename.absFilename());
+               if (!lyx::loadLyXFile(b, filename)) {
                        theBufferList().release(b);
                        return false;
                }
        } else {
                docstring text = bformat(_("The document %1$s does not yet "
                                                     "exist.\n\nDo you want to create "
-                                                    "a new document?"), from_utf8(s));
+                                                    "a new document?"), from_utf8(filename.absFilename()));
                int const ret = Alert::prompt(_("Create new document?"),
                         text, 0, 1, _("&Create"), _("Cancel"));
 
                if (ret == 0) {
-                       b = newFile(s, string(), true);
+                       b = newFile(filename.absFilename(), string(), true);
                        if (!b)
                                return false;
                } else
@@ -270,7 +259,7 @@ bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
        if (lyxrc.use_lastfilepos) {
                pit_type pit;
                pos_type pos;
-               boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(s);
+               boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(filename);
                // I am not sure how to separate the following part to a function
                // so I will leave this to Lars.
                //
@@ -282,14 +271,16 @@ bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
                                if (it.pit() == pit) {
                                        // restored pos may be bigger than it->size
                                        setCursor(makeDocIterator(it, min(pos, it->size())));
-                                       update(Update::FitCursor);
+                                       // No need to update the metrics if fitCursor returns false.
+                                       if (fitCursor())
+                                               updateMetrics(false);
                                        break;
                                }
                }
        }
 
        if (tolastfiles)
-               LyX::ref().session().lastFiles().add(b->fileName());
+               LyX::ref().session().lastFiles().add(FileName(b->fileName()));
 
        return true;
 }
@@ -297,9 +288,8 @@ bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
 
 void BufferView::reload()
 {
-       string const fn = buffer_->fileName();
        if (theBufferList().close(buffer_, false))
-               loadLyXFile(fn);
+               loadLyXFile(FileName(buffer_->fileName()));
 }
 
 
@@ -311,7 +301,7 @@ void BufferView::resize()
        lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 
        buffer_->text().init(this);
-       update();
+       updateMetrics(false);
        switchKeyMap();
 }
 
@@ -343,7 +333,7 @@ bool BufferView::multiParSel()
 }
 
 
-std::pair<bool, bool> BufferView::update(Update::flags flags)
+bool BufferView::update(Update::flags flags)
 {
        // This is close to a hot-path.
        if (lyxerr.debugging(Debug::DEBUG)) {
@@ -357,7 +347,7 @@ std::pair<bool, bool> BufferView::update(Update::flags flags)
 
        // Check needed to survive LyX startup
        if (!buffer_)
-               return make_pair(false, false);
+               return false;
 
        if (lyxerr.debugging(Debug::WORKAREA)) {
                lyxerr[Debug::WORKAREA] << "BufferView::update" << std::endl;
@@ -372,8 +362,16 @@ std::pair<bool, bool> BufferView::update(Update::flags flags)
 
        // Case when no explicit update is requested.
        if (!flags) {
-               // no need to do anything.
-               return make_pair(false, false);
+               // no need to redraw anything.
+               return false;
+       }
+
+       if (flags == Update::FitCursor) {
+               bool const fit_cursor = fitCursor();
+               if (fit_cursor)
+                       updateMetrics(false);
+               // tell the frontend to update the screen if needed.
+               return fit_cursor;
        }
 
        bool full_metrics = flags & Update::Force;
@@ -387,7 +385,7 @@ std::pair<bool, bool> BufferView::update(Update::flags flags)
                updateMetrics(false);
 
        // tell the frontend to update the screen.
-       return make_pair(true, single_par);
+       return true;
 }
 
 
@@ -525,7 +523,7 @@ Change const BufferView::getCurrentChange() const
 void BufferView::saveBookmark(bool persistent)
 {
        LyX::ref().session().bookmarks().save(
-               buffer_->fileName(),
+               FileName(buffer_->fileName()),
                cursor_.paragraph().id(),
                cursor_.pos(),
                persistent
@@ -646,7 +644,11 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
        case LFUN_CHANGE_NEXT:
        case LFUN_ALL_CHANGES_ACCEPT:
        case LFUN_ALL_CHANGES_REJECT:
-               flag.enabled(buffer_); // FIXME: Change tracking (MG)
+               // TODO: context-sensitive enabling of LFUNs
+               // In principle, these command should only be enabled if there
+               // is a change in the document. However, without proper
+               // optimizations, this will inevitably result in poor performance.
+               flag.enabled(buffer_);
                break;
 
        case LFUN_BUFFER_TOGGLE_COMPRESSION: {
@@ -703,22 +705,22 @@ bool BufferView::dispatch(FuncRequest const & cmd)
                break;
 
        case LFUN_FILE_INSERT:
-               // FIXME: We don't know the encoding of filenames
+               // FIXME UNICODE
                menuInsertLyXFile(to_utf8(cmd.argument()));
                break;
 
        case LFUN_FILE_INSERT_ASCII_PARA:
-               // FIXME: We don't know the encoding of filenames
+               // FIXME UNICODE
                insertAsciiFile(this, to_utf8(cmd.argument()), true);
                break;
 
        case LFUN_FILE_INSERT_ASCII:
-               // FIXME: We don't know the encoding of filenames
+               // FIXME UNICODE
                insertAsciiFile(this, to_utf8(cmd.argument()), false);
                break;
 
        case LFUN_FONT_STATE:
-               cur.message(from_utf8(cur.currentState()));
+               cur.message(cur.currentState());
                break;
 
        case LFUN_BOOKMARK_SAVE:
@@ -1010,21 +1012,20 @@ void BufferView::clearSelection()
 
 void BufferView::workAreaResize(int width, int height)
 {
-       bool const widthChange = width != width_;
-       bool const heightChange = height != height_;
-
+       // A resize is triggered whenever a window gets focus,
+       // because of the shared rows() of a buffer in multiple
+       // buffer views.
+       
        // Update from work area
        width_ = width;
        height_ = height;
 
        if (buffer_)
                resize();
-
-       update();
 }
 
 
-std::pair<bool, bool> BufferView::workAreaDispatch(FuncRequest const & cmd0)
+bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
 {
        //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
 
@@ -1034,7 +1035,7 @@ std::pair<bool, bool> BufferView::workAreaDispatch(FuncRequest const & cmd0)
 
        // E.g. Qt mouse press when no buffer
        if (!buffer_)
-               return make_pair(false, false);
+               return false;
 
        LCursor cur(*this);
        cur.push(buffer_->inset());
@@ -1052,6 +1053,52 @@ std::pair<bool, bool> BufferView::workAreaDispatch(FuncRequest const & cmd0)
        //lyxerr << BOOST_CURRENT_FUNCTION
        //       << " * created temp cursor:" << cur << endl;
 
+       // NOTE: editXY returns the top level inset of nested insets. If you happen
+       // to move from a text (inset=0) to a text inside an inset (e.g. an opened
+       // footnote inset, again inset=0), that inset will not be redrawn.
+       if (cmd.action == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
+               bool need_redraw = false;
+               
+               if (inset != last_inset_) {
+                       if (last_inset_)
+                               need_redraw |= last_inset_->setMouseHover(false);
+                       if (inset)
+                               need_redraw |= inset->setMouseHover(true);
+                       last_inset_ = inset;
+               }
+
+               // if last metrics update was in singlepar mode, WorkArea::redraw() will
+               // not expose the button for redraw. We adjust here the metrics dimension
+               // to enable a full redraw.
+               // FIXME: It is possible to redraw only the area around the button!
+               if (need_redraw && metrics_info_.singlepar) {
+                       // FIXME: It should be possible to redraw only the area around 
+                       // the button by doing this:
+                       //
+                       //metrics_info_.singlepar = false;
+                       //metrics_info_.y1 = ymin of button;
+                       //metrics_info_.y2 = ymax of button;
+                       //
+                       // Unfortunately, rowpainter.C:paintText() does not distinguish
+                       // between background updates and text updates. So we use the hammer
+                       // solution for now. We could also avoid the updateMetrics() below
+                       // by using the first and last pit of the CoordCache. Have a look
+                       // at LyXText::getPitNearY() to see what I mean.
+                       //
+                       //metrics_info_.pit1 = first pit of CoordCache;
+                       //metrics_info_.pit2 = last pit of CoordCache;
+                       //metrics_info_.singlepar = false;
+                       //metrics_info_.y1 = 0;
+                       //metrics_info_.y2 = height_;
+                       //
+                       updateMetrics(false);
+               }
+
+               // This event (moving without mouse click) is not passed further.
+               // This should be changed if it is further utilized.
+               return need_redraw;
+       }
+
        // Put anchor at the same position.
        cur.resetAnchor();
 
@@ -1072,8 +1119,7 @@ std::pair<bool, bool> BufferView::workAreaDispatch(FuncRequest const & cmd0)
        if (cur.result().dispatched() && cur.result().update())
                return update(cur.result().update());
 
-       // When the above and the inner function are fixed, we can do this:
-       return make_pair(false, false);
+       return false;
 }
 
 
@@ -1160,7 +1206,7 @@ void BufferView::setCursor(DocIterator const & dit)
 }
 
 
-void BufferView::mouseSetCursor(LCursor & cur)
+bool BufferView::mouseSetCursor(LCursor & cur)
 {
        BOOST_ASSERT(&cur.bv() == this);
 
@@ -1171,14 +1217,15 @@ void BufferView::mouseSetCursor(LCursor & cur)
 
        // do the dEPM magic if needed
        // FIXME: move this to InsetText::notifyCursorLeaves?
+       bool update = false;
        if (!badcursor && cursor_.inTexted())
-               cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
+               update = cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
 
        cursor_ = cur;
        cursor_.clearSelection();
        cursor_.setTargetX();
        finishUndo();
-
+       return update;
 }
 
 
@@ -1345,7 +1392,7 @@ void BufferView::menuInsertLyXFile(string const & filenm)
                if (buffer_) {
                        string const trypath = buffer_->filePath();
                        // If directory is writeable, use this as default.
-                       if (isDirWriteable(trypath))
+                       if (isDirWriteable(FileName(trypath)))
                                initpath = trypath;
                }
 
@@ -1376,7 +1423,7 @@ void BufferView::menuInsertLyXFile(string const & filenm)
 
        // Get absolute path of file and add ".lyx"
        // to the filename if necessary
-       filename = fileSearch(string(), filename, "lyx");
+       filename = fileSearch(string(), filename, "lyx").absFilename();
 
        docstring const disp_fn = makeDisplayPath(filename);
        // emit message signal.
@@ -1384,7 +1431,7 @@ void BufferView::menuInsertLyXFile(string const & filenm)
 
        docstring res;
        Buffer buf("", false);
-       if (lyx::loadLyXFile(&buf, makeAbsPath(filename))) {
+       if (lyx::loadLyXFile(&buf, FileName(filename))) {
                ErrorList & el = buffer_->errorList("Parse");
                // Copy the inserted document error list into the current buffer one.
                el = buf.errorList("Parse");