]> git.lyx.org Git - lyx.git/blobdiff - src/BufferView.cpp
Fix some warnings
[lyx.git] / src / BufferView.cpp
index 2c79c340c928d75d2043ccafb54d05b0fac0f009..e31efcf673d433a52ab8efef42dca41d8335cb33 100644 (file)
@@ -65,6 +65,7 @@
 #include "insets/InsetText.h"
 
 #include "mathed/MathData.h"
+#include "mathed/InsetMathNest.h"
 
 #include "frontends/alert.h"
 #include "frontends/Application.h"
@@ -81,6 +82,7 @@
 #include "support/gettext.h"
 #include "support/lassert.h"
 #include "support/lstrings.h"
+#include "support/lyxlib.h"
 #include "support/Package.h"
 #include "support/types.h"
 
@@ -108,7 +110,7 @@ T * getInsetByCode(Cursor const & cur, InsetCode code)
        Inset * inset = it.nextInset();
        if (inset && inset->lyxCode() == code)
                return static_cast<T*>(inset);
-       return 0;
+       return nullptr;
 }
 
 
@@ -163,7 +165,7 @@ bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
 
        if (!findNextInset(tmpdit, codes, contents)) {
                if (dit.depth() != 1 || dit.pit() != 0 || dit.pos() != 0) {
-                       Inset * inset = &tmpdit.bottom().inset();
+                       inset = &tmpdit.bottom().inset();
                        tmpdit = doc_iterator_begin(&inset->buffer(), inset);
                        if (!findNextInset(tmpdit, codes, contents))
                                return false;
@@ -228,15 +230,14 @@ enum ScreenUpdateStrategy {
 
 struct BufferView::Private
 {
-       Private(BufferView & bv) : update_strategy_(FullScreenUpdate),
+       Private(BufferView & bv) :
+               update_strategy_(FullScreenUpdate),
                update_flags_(Update::Force),
-               wh_(0), cursor_(bv),
-               anchor_pit_(0), anchor_ypos_(0),
-               inlineCompletionUniqueChars_(0),
-               last_inset_(0), clickable_inset_(false),
-               mouse_position_cache_(),
-               bookmark_edit_position_(-1), gui_(0),
-               horiz_scroll_offset_(0), repaint_caret_row_(false)
+               cursor_(bv), anchor_pit_(0), anchor_ypos_(0),
+               wh_(0), inlineCompletionUniqueChars_(0),
+               last_inset_(nullptr), mouse_position_cache_(),
+               gui_(nullptr), bookmark_edit_position_(-1),
+               horiz_scroll_offset_(0), clickable_inset_(false)
        {
                xsel_cache_.set = false;
        }
@@ -249,9 +250,10 @@ struct BufferView::Private
        Update::flags update_flags_;
        ///
        CoordCache coord_cache_;
+       ///
+       typedef map<MathData const *, MathRow> MathRows;
+       MathRows math_rows_;
 
-       /// Estimated average par height for scrollbar.
-       int wh_;
        /// this is used to handle XSelection events in the right manner.
        struct {
                CursorSlice cursor;
@@ -264,6 +266,8 @@ struct BufferView::Private
        pit_type anchor_pit_;
        ///
        int anchor_ypos_;
+       /// Estimated average par height for scrollbar.
+       int wh_;
        ///
        vector<int> par_height_;
 
@@ -282,17 +286,12 @@ struct BufferView::Private
          * Not owned, so don't delete.
          */
        Inset const * last_inset_;
-       /// are we hovering something that we can click
-       bool clickable_inset_;
 
        /// position of the mouse at the time of the last mouse move
        /// This is used to update the hovering status of inset in
        /// cases where the buffer is scrolled, but the mouse didn't move.
        Point mouse_position_cache_;
 
-       // cache for id of the paragraph which was edited the last time
-       int bookmark_edit_position_;
-
        mutable TextMetricsCache text_metrics_;
 
        /// Whom to notify.
@@ -308,19 +307,15 @@ struct BufferView::Private
 
        /// When the row where the cursor lies is scrolled, this
        /// contains the scroll offset
+       // cache for id of the paragraph which was edited the last time
+       int bookmark_edit_position_;
+
        int horiz_scroll_offset_;
        /// a slice pointing to the start of the row where the cursor
        /// is (at last draw time)
        CursorSlice current_row_slice_;
-       /// a slice pointing to the start of the row where cursor was
-       /// at previous draw event
-       CursorSlice last_row_slice_;
-
-       /// a slice pointing to where the cursor has been drawn after the current
-       /// draw() call.
-       CursorSlice caret_slice_;
-       /// indicates whether the caret slice needs to be repainted in this draw() run.
-       bool repaint_caret_row_;
+       /// are we hovering something that we can click
+       bool clickable_inset_;
 };
 
 
@@ -348,9 +343,10 @@ BufferView::~BufferView()
        // That is to say, if a cursor is in a nested inset, it will be
        // restore to the left of the top level inset.
        LastFilePosSection::FilePos fp;
+       fp.file = buffer_.fileName();
        fp.pit = d->cursor_.bottom().pit();
        fp.pos = d->cursor_.bottom().pos();
-       theSession().lastFilePos().save(buffer_.fileName(), fp);
+       theSession().lastFilePos().save(fp);
 
        if (d->last_inset_)
                d->last_inset_->setMouseHover(this, false);
@@ -361,8 +357,8 @@ BufferView::~BufferView()
 
 int BufferView::rightMargin() const
 {
-       // The value used to be hardcoded to 10, which is 0.1in at 100dpi
-       int const default_margin = Length(0.1, Length::IN).inPixels(0);
+       // The value used to be hardcoded to 10
+       int const default_margin = zoomedPixels(10);
        // The additional test for the case the outliner is opened.
        if (!full_screen_ || !lyxrc.full_screen_limit
            || width_ < lyxrc.full_screen_width + 2 * default_margin)
@@ -385,6 +381,21 @@ int BufferView::inPixels(Length const & len) const
 }
 
 
+int BufferView::zoomedPixels(int pix) const
+{
+       // FIXME: the dpi setting should really depend on the BufferView
+       // (think different monitors).
+
+       // Zoom factor specified by user in percent
+       double const zoom = lyxrc.currentZoom / 100.0; // [percent]
+
+       // DPI setting for monitor relative to 100dpi
+       double const dpizoom = lyxrc.dpi / 100.0; // [per 100dpi]
+
+       return support::iround(pix * zoom * dpizoom);
+}
+
+
 bool BufferView::isTopScreen() const
 {
        return 0 == d->scrollbarParameters_.min;
@@ -421,6 +432,20 @@ CoordCache const & BufferView::coordCache() const
 }
 
 
+MathRow const & BufferView::mathRow(MathData const * cell) const
+{
+       auto it = d->math_rows_.find(cell);
+       LATTEST(it != d->math_rows_.end());
+       return it->second;
+}
+
+
+void BufferView::setMathRow(MathData const * cell, MathRow const & mrow)
+{
+       d->math_rows_[cell] = mrow;
+}
+
+
 Buffer & BufferView::buffer()
 {
        return buffer_;
@@ -448,75 +473,90 @@ bool BufferView::needsFitCursor() const
 }
 
 
-void BufferView::processUpdateFlags(Update::flags flags)
+namespace {
+
+// this is for debugging only.
+string flagsAsString(Update::flags flags)
 {
-       // The update flags are reset to None after the redraw is actually done
-       d->update_flags_ = d->update_flags_ | flags;
+       if (flags == Update::None)
+               return "None ";
+       return string((flags & Update::FitCursor) ? "FitCursor " : "")
+               + ((flags & Update::Force) ? "Force " : "")
+               + ((flags & Update::ForceDraw) ? "ForceDraw " : "")
+               + ((flags & Update::SinglePar) ? "SinglePar " : "")
+               + ((flags & Update::Decoration) ? "Decoration " : "");
+}
 
-       // This is close to a hot-path.
-       LYXERR(Debug::PAINTING, "BufferView::processUpdateFlags( "
-                       << ((d->update_flags_ & Update::FitCursor) ? "fitcursor " : "")
-                       << ((d->update_flags_ & Update::Force) ? "forceupdate " : "")
-                       << ((d->update_flags_ & Update::ForceDraw) ? "forcedraw " : "")
-                       << ((d->update_flags_ & Update::SinglePar) ? "singlepar " : "")
-                                << ")  buffer: " << &buffer_);
+}
 
-       // Now do the first drawing step if needed. This consists on updating
-       // the CoordCache in updateMetrics().
-       // The second drawing step is done in WorkArea::redraw() if needed.
-       // FIXME: is this still true now that Buffer::changed() is used all over?
+void BufferView::processUpdateFlags(Update::flags flags)
+{
+       LYXERR(Debug::PAINTING, "BufferView::processUpdateFlags( "
+                  << flagsAsString(flags) << ")  buffer: " << &buffer_);
 
        // Case when no explicit update is requested.
-       if (!d->update_flags_) {
-               // no need to redraw anything.
-               d->update_strategy_ = NoScreenUpdate;
-               return;
-       }
-
-       if (d->update_flags_ == Update::Decoration) {
-               d->update_strategy_ = DecorationUpdate;
-               buffer_.changed(false);
+       if (flags == Update::None)
                return;
-       }
 
-       if (d->update_flags_ == Update::FitCursor
-           || d->update_flags_ == (Update::Decoration | Update::FitCursor)) {
-               // tell the frontend to update the screen if needed.
+       /* FIXME We would like to avoid doing this here, since it is very
+        * expensive and is called in updateBuffer already. However, even
+        * inserting a plain character can invalidate the overly fragile
+        * tables of child documents built by updateMacros. Some work is
+        * needed to avoid doing that when not necessary.
+        */
+       buffer_.updateMacros();
+
+       // First check whether the metrics and inset positions should be updated
+       if (flags & Update::Force) {
+               // This will update the CoordCache items and replace Force
+               // with ForceDraw in flags.
+               updateMetrics(flags);
+       }
+
+       // Detect whether we can only repaint a single paragraph (if we
+       // are not already redrawing all).
+       // We handle this before FitCursor because the later will require
+       // correct metrics at cursor position.
+       if (!(flags & Update::ForceDraw)
+           && (flags & Update::SinglePar)
+               && !singleParUpdate())
+                       updateMetrics(flags);
+
+       // Then make sure that the screen contains the cursor if needed
+       if (flags & Update::FitCursor) {
                if (needsFitCursor()) {
-                       showCursor();
-                       return;
-               }
-               if (d->update_flags_ & Update::Decoration) {
-                       d->update_strategy_ = DecorationUpdate;
-                       buffer_.changed(false);
-                       return;
+                       // First try to make the selection start visible
+                       // (which is just the cursor when there is no selection)
+                       scrollToCursor(d->cursor_.selectionBegin(), false);
+                       // Is the cursor visible? (only useful if cursor is at end of selection)
+                       if (needsFitCursor())
+                               // then try to make cursor visible instead
+                               scrollToCursor(d->cursor_, false);
+                       // Metrics have to be recomputed (maybe again)
+                       updateMetrics(flags);
                }
-               // no screen update is needed in principle, but this
-               // could change if cursor row needs horizontal scrolling.
-               d->update_strategy_ = NoScreenUpdate;
-               buffer_.changed(false);
-               return;
+               flags = flags & ~Update::FitCursor;
        }
 
-       // We test against the flags parameter here to honor explicit metrics requests
-       bool const full_metrics = flags & Update::Force || !singleParUpdate();
+       // Add flags to the the update flags. These will be reset to None
+       // after the redraw is actually done
+       d->update_flags_ = d->update_flags_ | flags;
+       LYXERR(Debug::PAINTING, "Cumulative flags: " << flagsAsString(flags));
+
+       // Now compute the update strategy
+       // Possibly values in flag are None, SinglePar, Decoration, ForceDraw
+       LATTEST((d->update_flags_ & ~(Update::None | Update::SinglePar
+                                     | Update::Decoration | Update::ForceDraw)) == 0);
 
-       if (full_metrics)
-               // We have to update the full screen metrics.
-               updateMetrics();
        if (d->update_flags_ & Update::ForceDraw)
                d->update_strategy_ = FullScreenUpdate;
-
-       if (!(d->update_flags_ & Update::FitCursor)) {
-               // Nothing to do anymore. Trigger a redraw and return.
-               buffer_.changed(false);
-               return;
-       }
-
-       if (needsFitCursor()) {
-               // The cursor is off screen so ensure it is visible.
-               // refresh it:
-               showCursor();
+       else if (d->update_flags_ & Update::Decoration)
+               d->update_strategy_ = DecorationUpdate;
+       else if (d->update_flags_ & Update::SinglePar)
+               d->update_strategy_ = SingleParUpdate;
+       else {
+               // no need to redraw anything.
+               d->update_strategy_ = NoScreenUpdate;
        }
 
        updateHoveredInset();
@@ -637,8 +677,7 @@ void BufferView::scrollDocView(int const value, bool update)
        // If the offset is less than 2 screen height, prefer to scroll instead.
        if (abs(value) <= 2 * height_) {
                d->anchor_ypos_ -= value;
-               buffer_.changed(true);
-               updateHoveredInset();
+               processUpdateFlags(Update::Force);
                return;
        }
 
@@ -835,12 +874,7 @@ bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
                d->cursor_.setCurrentFont();
                // Do not forget to reset the anchor (see #9912)
                d->cursor_.resetAnchor();
-               // To center the screen on this new position we need the
-               // paragraph position which is computed at draw() time.
-               // So we need a redraw!
-               buffer_.changed(false);
-               if (needsFitCursor())
-                       showCursor();
+               processUpdateFlags(Update::Force | Update::FitCursor);
        }
 
        return success;
@@ -882,19 +916,15 @@ void BufferView::showCursor()
 void BufferView::showCursor(DocIterator const & dit,
        bool recenter, bool update)
 {
-       if (scrollToCursor(dit, recenter) && update) {
-               buffer_.changed(true);
-               updateHoveredInset();
-       }
+       if (scrollToCursor(dit, recenter) && update)
+               processUpdateFlags(Update::Force);
 }
 
 
 void BufferView::scrollToCursor()
 {
-       if (scrollToCursor(d->cursor_, false)) {
-               buffer_.changed(true);
-               updateHoveredInset();
-       }
+       if (scrollToCursor(d->cursor_, false))
+               processUpdateFlags(Update::Force);
 }
 
 
@@ -932,7 +962,7 @@ bool BufferView::scrollToCursor(DocIterator const & dit, bool const recenter)
                int offset = coordOffset(dit).y_;
                int ypos = pm.position() + offset;
                Dimension const & row_dim =
-                       pm.getRow(cs.pos(), dit.boundary()).dimension();
+                       pm.getRow(cs.pos(), dit.boundary()).dim();
                int scrolled = 0;
                if (recenter)
                        scrolled = scroll(ypos - height_/2);
@@ -976,7 +1006,7 @@ bool BufferView::scrollToCursor(DocIterator const & dit, bool const recenter)
        d->anchor_pit_ = bot_pit;
        CursorSlice const & cs = dit.innerTextSlice();
        Dimension const & row_dim =
-               pm.getRow(cs.pos(), dit.boundary()).dimension();
+               pm.getRow(cs.pos(), dit.boundary()).dim();
 
        if (recenter)
                d->anchor_ypos_ = height_/2;
@@ -1140,6 +1170,10 @@ bool BufferView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
                flag.setEnabled(true);
                break;
 
+       case LFUN_GRAPHICS_UNIFY:
+               flag.setEnabled(cur.countInsetsInSelection(GRAPHICS_CODE)>1);
+               break;
+
        case LFUN_WORD_FINDADV: {
                FindAndReplaceOptions opt;
                istringstream iss(to_utf8(cmd.argument()));
@@ -1230,13 +1264,16 @@ bool BufferView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 Inset * BufferView::editedInset(string const & name) const
 {
        map<string, Inset *>::const_iterator it = d->edited_insets_.find(name);
-       return it == d->edited_insets_.end() ? 0 : it->second;
+       return it == d->edited_insets_.end() ? nullptr : it->second;
 }
 
 
 void BufferView::editInset(string const & name, Inset * inset)
 {
-       d->edited_insets_[name] = inset;
+       if (inset)
+               d->edited_insets_[name] = inset;
+       else
+               d->edited_insets_.erase(name);
 }
 
 
@@ -1338,7 +1375,7 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                //  without calling recordUndo. Fix this before using
                //  recordUndoBufferParams().
                cur.recordUndoFullBuffer();
-               buffer_.params().setBaseClass(argument);
+               buffer_.params().setBaseClass(argument, buffer_.layoutPos());
                makeDocumentClass();
                dr.screenUpdate(Update::Force);
                dr.forceBufferUpdate();
@@ -1362,32 +1399,52 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
        case LFUN_LAYOUT_RELOAD: {
                LayoutFileIndex bc = buffer_.params().baseClassID();
                LayoutFileList::get().reset(bc);
-               buffer_.params().setBaseClass(bc);
+               buffer_.params().setBaseClass(bc, buffer_.layoutPos());
                makeDocumentClass();
                dr.screenUpdate(Update::Force);
                dr.forceBufferUpdate();
                break;
        }
 
-       case LFUN_UNDO:
+       case LFUN_UNDO: {
                dr.setMessage(_("Undo"));
                cur.clearSelection();
-               if (!cur.textUndo())
+               // We need to find out if the bibliography information
+               // has changed. See bug #11055.
+               // So these should not be references...
+               string const engine = buffer().params().citeEngine();
+               CiteEngineType const enginetype = buffer().params().citeEngineType();
+               if (!cur.undoAction())
                        dr.setMessage(_("No further undo information"));
-               else
+               else {
                        dr.screenUpdate(Update::Force | Update::FitCursor);
-               dr.forceBufferUpdate();
+                       dr.forceBufferUpdate();
+                       if (buffer().params().citeEngine() != engine ||
+                           buffer().params().citeEngineType() != enginetype)
+                               buffer().invalidateCiteLabels();
+               }
                break;
+       }
 
-       case LFUN_REDO:
+       case LFUN_REDO: {
                dr.setMessage(_("Redo"));
                cur.clearSelection();
-               if (!cur.textRedo())
+               // We need to find out if the bibliography information
+               // has changed. See bug #11055.
+               // So these should not be references...
+               string const engine = buffer().params().citeEngine();
+               CiteEngineType const enginetype = buffer().params().citeEngineType();
+               if (!cur.redoAction())
                        dr.setMessage(_("No further redo information"));
-               else
+               else {
                        dr.screenUpdate(Update::Force | Update::FitCursor);
-               dr.forceBufferUpdate();
+                       dr.forceBufferUpdate();
+                       if (buffer().params().citeEngine() != engine ||
+                           buffer().params().citeEngineType() != enginetype)
+                               buffer().invalidateCiteLabels();
+               }
                break;
+       }
 
        case LFUN_FONT_STATE:
                dr.setMessage(cur.currentState(false));
@@ -1429,14 +1486,14 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                for (Buffer * b = &buffer_; i == 0 || b != &buffer_;
                        b = theBufferList().next(b)) {
 
-                       Cursor cur(*this);
-                       cur.setCursor(b->getParFromID(id));
-                       if (cur.atEnd()) {
+                       Cursor curs(*this);
+                       curs.setCursor(b->getParFromID(id));
+                       if (curs.atEnd()) {
                                LYXERR(Debug::INFO, "No matching paragraph found! [" << id << "].");
                                ++i;
                                continue;
                        }
-                       LYXERR(Debug::INFO, "Paragraph " << cur.paragraph().id()
+                       LYXERR(Debug::INFO, "Paragraph " << curs.paragraph().id()
                                << " found in buffer `"
                                << b->absFileName() << "'.");
 
@@ -1444,8 +1501,8 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                                bool success;
                                if (str_id_end.empty() || str_pos_end.empty()) {
                                        // Set the cursor
-                                       cur.pos() = pos;
-                                       mouseSetCursor(cur);
+                                       curs.pos() = pos;
+                                       mouseSetCursor(curs);
                                        success = true;
                                } else {
                                        int const id_end = convert<int>(str_id_end);
@@ -1480,12 +1537,18 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 
        case LFUN_CHANGE_NEXT:
                findNextChange(this);
+               if (cur.inset().isTable())
+                       // In tables, there might be whole changed rows or columns
+                       cur.dispatch(cmd);
                // FIXME: Move this LFUN to Buffer so that we don't have to do this:
                dr.screenUpdate(Update::Force | Update::FitCursor);
                break;
 
        case LFUN_CHANGE_PREVIOUS:
                findPreviousChange(this);
+               if (cur.inset().isTable())
+                       // In tables, there might be whole changed rows or columns
+                       cur.dispatch(cmd);
                // FIXME: Move this LFUN to Buffer so that we don't have to do this:
                dr.screenUpdate(Update::Force | Update::FitCursor);
                break;
@@ -1498,32 +1561,43 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                }
                break;
 
-       case LFUN_ALL_CHANGES_ACCEPT:
+       case LFUN_ALL_CHANGES_ACCEPT: {
                // select complete document
                cur.reset();
                cur.selHandle(true);
                buffer_.text().cursorBottom(cur);
                // accept everything in a single step to support atomic undo
+               // temporarily disable track changes in order to end with really
+               // no new (e.g., DPSM-caused) changes (see #7487)
+               bool const track = buffer_.params().track_changes;
+               buffer_.params().track_changes = false;
                buffer_.text().acceptOrRejectChanges(cur, Text::ACCEPT);
+               buffer_.params().track_changes = track;
                cur.resetAnchor();
                // FIXME: Move this LFUN to Buffer so that we don't have to do this:
                dr.screenUpdate(Update::Force | Update::FitCursor);
                dr.forceBufferUpdate();
                break;
+       }
 
-       case LFUN_ALL_CHANGES_REJECT:
+       case LFUN_ALL_CHANGES_REJECT: {
                // select complete document
                cur.reset();
                cur.selHandle(true);
                buffer_.text().cursorBottom(cur);
                // reject everything in a single step to support atomic undo
-               // Note: reject does not work recursively; the user may have to repeat the operation
+               // temporarily disable track changes in order to end with really
+               // no new (e.g., DPSM-caused) changes (see #7487)
+               bool const track = buffer_.params().track_changes;
+               buffer_.params().track_changes = false;
                buffer_.text().acceptOrRejectChanges(cur, Text::REJECT);
+               buffer_.params().track_changes = track;
                cur.resetAnchor();
                // FIXME: Move this LFUN to Buffer so that we don't have to do this:
                dr.screenUpdate(Update::Force | Update::FitCursor);
                dr.forceBufferUpdate();
                break;
+       }
 
        case LFUN_WORD_FIND_FORWARD:
        case LFUN_WORD_FIND_BACKWARD: {
@@ -1639,10 +1713,8 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
                                                BIBTEX_CODE);
                if (inset) {
-                       if (inset->addDatabase(cmd.argument())) {
-                               buffer_.invalidateBibfileCache();
+                       if (inset->addDatabase(cmd.argument()))
                                dr.forceBufferUpdate();
-                       }
                }
                break;
        }
@@ -1653,11 +1725,48 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
                                                BIBTEX_CODE);
                if (inset) {
-                       if (inset->delDatabase(cmd.argument())) {
-                               buffer_.invalidateBibfileCache();
+                       if (inset->delDatabase(cmd.argument()))
                                dr.forceBufferUpdate();
+               }
+               break;
+       }
+
+       case LFUN_GRAPHICS_UNIFY: {
+
+               cur.recordUndoFullBuffer();
+
+               DocIterator from, to;
+               from = cur.selectionBegin();
+               to = cur.selectionEnd();
+
+               string const newId = cmd.getArg(0);
+               bool fetchId = newId.empty(); //if we wait for groupId from first graphics inset
+
+               InsetGraphicsParams grp_par;
+               if (!fetchId)
+                       InsetGraphics::string2params(graphics::getGroupParams(buffer_, newId), buffer_, grp_par);
+
+               if (!from.nextInset())  //move to closest inset
+                       from.forwardInset();
+
+               while (!from.empty() && from < to) {
+                       Inset * inset = from.nextInset();
+                       if (!inset)
+                               break;
+                       InsetGraphics * ig = inset->asInsetGraphics();
+                       if (ig) {
+                               InsetGraphicsParams inspar = ig->getParams();
+                               if (fetchId) {
+                                       grp_par = inspar;
+                                       fetchId = false;
+                               } else {
+                                       grp_par.filename = inspar.filename;
+                                       ig->setParams(grp_par);
+                               }
                        }
+                       from.forwardInset();
                }
+               dr.screenUpdate(Update::Force); //needed if triggered from context menu
                break;
        }
 
@@ -1720,8 +1829,8 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                bool const in_texted = cur.inTexted();
                cur.setCursor(doc_iterator_begin(cur.buffer()));
                cur.selHandle(false);
-               buffer_.changed(true);
-               updateHoveredInset();
+               // Force an immediate computation of metrics because we need it below
+               processUpdateFlags(Update::Force);
 
                d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_,
                        true, act == LFUN_SCREEN_UP);
@@ -1755,8 +1864,7 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                        if (scroll_value)
                                scroll(scroll_step * scroll_value);
                }
-               buffer_.changed(true);
-               updateHoveredInset();
+               dr.screenUpdate(Update::ForceDraw);
                dr.forceBufferUpdate();
                break;
        }
@@ -1819,10 +1927,12 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                        // At least one complete cell is selected and inset is a table.
                        // Select all cells
                        cur.idx() = 0;
+                       cur.pit() = 0;
                        cur.pos() = 0;
                        cur.resetAnchor();
                        cur.selection(true);
                        cur.idx() = cur.lastidx();
+                       cur.pit() = cur.lastpit();
                        cur.pos() = cur.lastpos();
                } else {
                        // select current cell
@@ -1839,6 +1949,33 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
        }
 
 
+       case LFUN_UNICODE_INSERT: {
+               if (cmd.argument().empty())
+                       break;
+
+               FuncCode code = cur.inset().currentMode() == Inset::MATH_MODE ?
+                       LFUN_MATH_INSERT : LFUN_SELF_INSERT;
+               int i = 0;
+               while (true) {
+                       docstring const arg = from_utf8(cmd.getArg(i));
+                       if (arg.empty())
+                               break;
+                       if (!isHex(arg)) {
+                               LYXERR0("Not a hexstring: " << arg);
+                               ++i;
+                               continue;
+                       }
+                       char_type c = hexToInt(arg);
+                       if (c >= 32 && c < 0x10ffff) {
+                               LYXERR(Debug::KEY, "Inserting c: " << c);
+                               lyx::dispatch(FuncRequest(code, docstring(1, c)));
+                       }
+                       ++i;
+               }
+               break;
+       }
+
+
        // This would be in Buffer class if only Cursor did not
        // require a bufferview
        case LFUN_INSET_FORALL: {
@@ -1849,20 +1986,20 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                // an arbitrary number to limit number of iterations
                const int max_iter = 100000;
                int iterations = 0;
-               Cursor & cur = d->cursor_;
-               Cursor const savecur = cur;
-               cur.reset();
-               if (!cur.nextInset())
-                       cur.forwardInset();
-               cur.beginUndoGroup();
-               while(cur && iterations < max_iter) {
-                       Inset * const ins = cur.nextInset();
+               Cursor & curs = d->cursor_;
+               Cursor const savecur = curs;
+               curs.reset();
+               if (!curs.nextInset())
+                       curs.forwardInset();
+               curs.beginUndoGroup();
+               while(curs && iterations < max_iter) {
+                       Inset * const ins = curs.nextInset();
                        if (!ins)
                                break;
                        docstring insname = ins->layoutName();
                        while (!insname.empty()) {
                                if (insname == name || name == from_utf8("*")) {
-                                       cur.recordUndo();
+                                       curs.recordUndo();
                                        lyx::dispatch(fr, dr);
                                        ++iterations;
                                        break;
@@ -1873,11 +2010,11 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                                insname = insname.substr(0, i);
                        }
                        // if we did not delete the inset, skip it
-                       if (!cur.nextInset() || cur.nextInset() == ins)
-                               cur.forwardInset();
+                       if (!curs.nextInset() || curs.nextInset() == ins)
+                               curs.forwardInset();
                }
-               cur = savecur;
-               cur.fixIfBroken();
+               curs = savecur;
+               curs.fixIfBroken();
                /** This is a dummy undo record only to remember the cursor
                 * that has just been set; this will be used on a redo action
                 * (see ticket #10097)
@@ -1885,8 +2022,8 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                 * FIXME: a better fix would be to have a way to set the
                 * cursor value directly, but I am not sure it is worth it.
                 */
-               cur.recordUndo();
-               cur.endUndoGroup();
+               curs.recordUndo();
+               curs.endUndoGroup();
                dr.screenUpdate(Update::Force);
                dr.forceBufferUpdate();
 
@@ -1912,14 +2049,9 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                        Alert::warning(_("Branch already exists"), drtmp.message());
                        break;
                }
-               BranchList & branch_list = buffer_.params().branchlist();
-               vector<docstring> const branches =
-                       getVectorFromString(branch_name, branch_list.separator());
-               for (vector<docstring>::const_iterator it = branches.begin();
-                    it != branches.end(); ++it) {
-                       branch_name = *it;
-                       lyx::dispatch(FuncRequest(LFUN_BRANCH_INSERT, branch_name));
-               }
+               docstring const sep = buffer_.params().branchlist().separator();
+               for (docstring const & branch : getVectorFromString(branch_name, sep))
+                       lyx::dispatch(FuncRequest(LFUN_BRANCH_INSERT, branch));
                break;
        }
 
@@ -1986,6 +2118,8 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
                icp["key"] = from_utf8(arg);
                if (!opt1.empty())
                        icp["before"] = from_utf8(opt1);
+               icp["literal"] = 
+                       from_ascii(InsetCitation::last_literal ? "true" : "false");
                string icstr = InsetCommand::params2string(icp);
                FuncRequest fr(LFUN_INSET_INSERT, icstr);
                lyx::dispatch(fr);
@@ -2070,7 +2204,7 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 }
 
 
-docstring const BufferView::requestSelection()
+docstring BufferView::requestSelection()
 {
        Cursor & cur = d->cursor_;
 
@@ -2127,7 +2261,7 @@ Inset const * BufferView::getCoveringInset(Text const & text,
        TextMetrics & tm = d->text_metrics_[&text];
        Inset * inset = tm.checkInsetHit(x, y);
        if (!inset)
-               return 0;
+               return nullptr;
 
        if (!inset->descendable(*this))
                // No need to go further down if the inset is not
@@ -2168,7 +2302,7 @@ void BufferView::updateHoveredInset() const
        if (d->last_inset_) {
                // Remove the hint on the last hovered inset (if any).
                need_redraw |= d->last_inset_->setMouseHover(this, false);
-               d->last_inset_ = 0;
+               d->last_inset_ = nullptr;
        }
 
        if (covering_inset && covering_inset->setMouseHover(this, true)) {
@@ -2199,7 +2333,7 @@ void BufferView::clearLastInset(Inset * inset) const
                LYXERR0("Wrong last_inset!");
                LATTEST(false);
        }
-       d->last_inset_ = 0;
+       d->last_inset_ = nullptr;
 }
 
 
@@ -2406,22 +2540,26 @@ bool BufferView::setCursorFromInset(Inset const * inset)
 
 void BufferView::gotoLabel(docstring const & label)
 {
-       ListOfBuffers bufs = buffer().allRelatives();
-       ListOfBuffers::iterator it = bufs.begin();
-       for (; it != bufs.end(); ++it) {
-               Buffer const * buf = *it;
-
+       FuncRequest action;
+       bool have_inactive = false;
+       for (Buffer const * buf : buffer().allRelatives()) {
                // find label
-               shared_ptr<Toc> toc = buf->tocBackend().toc("label");
-               Toc::const_iterator toc_it = toc->begin();
-               Toc::const_iterator end = toc->end();
-               for (; toc_it != end; ++toc_it) {
-                       if (label == toc_it->str()) {
-                               lyx::dispatch(toc_it->action());
+               for (TocItem const & item : *buf->tocBackend().toc("label")) {
+                       if (label == item.str() && item.isOutput()) {
+                               lyx::dispatch(item.action());
                                return;
                        }
+                       // If we find an inactive label, save it for the case
+                       // that no active one is there
+                       if (label == item.str() && !have_inactive) {
+                               have_inactive = true;
+                               action = item.action();
+                       }
                }
        }
+       // We only found an inactive label. Go there.
+       if (have_inactive)
+               lyx::dispatch(action);
 }
 
 
@@ -2436,8 +2574,9 @@ TextMetrics & BufferView::textMetrics(Text const * t)
        LBUFERR(t);
        TextMetricsCache::iterator tmc_it  = d->text_metrics_.find(t);
        if (tmc_it == d->text_metrics_.end()) {
-               tmc_it = d->text_metrics_.insert(
-                       make_pair(t, TextMetrics(this, const_cast<Text *>(t)))).first;
+               tmc_it = d->text_metrics_.emplace(std::piecewise_construct,
+                               std::forward_as_tuple(t),
+                               std::forward_as_tuple(this, const_cast<Text *>(t))).first;
        }
        return tmc_it->second;
 }
@@ -2493,7 +2632,7 @@ bool BufferView::checkDepm(Cursor & cur, Cursor & old)
                return false;
 
        bool need_anchor_change = false;
-       bool changed = d->cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
+       bool changed = Text::deleteEmptyParagraphMechanism(cur, old,
                need_anchor_change);
 
        if (need_anchor_change)
@@ -2622,12 +2761,6 @@ Cursor const & BufferView::cursor() const
 }
 
 
-pit_type BufferView::anchor_ref() const
-{
-       return d->anchor_pit_;
-}
-
-
 bool BufferView::singleParUpdate()
 {
        Text & buftext = buffer_.text();
@@ -2651,7 +2784,6 @@ bool BufferView::singleParUpdate()
                return false;
 
        tm.updatePosCache(bottom_pit);
-       d->update_strategy_ = SingleParUpdate;
 
        LYXERR(Debug::PAINTING, "\ny1: " << pm.position() - pm.ascent()
                << " y2: " << pm.position() + pm.descent()
@@ -2662,6 +2794,13 @@ bool BufferView::singleParUpdate()
 
 
 void BufferView::updateMetrics()
+{
+       updateMetrics(d->update_flags_);
+       d->update_strategy_ = FullScreenUpdate;
+}
+
+
+void BufferView::updateMetrics(Update::flags & update_flags)
 {
        if (height_ == 0 || width_ == 0)
                return;
@@ -2671,6 +2810,7 @@ void BufferView::updateMetrics()
 
        // Clear out the position cache in case of full screen redraw,
        d->coord_cache_.clear();
+       d->math_rows_.clear();
 
        // Clear out paragraph metrics to avoid having invalid metrics
        // in the cache from paragraphs not relayouted below
@@ -2746,8 +2886,8 @@ void BufferView::updateMetrics()
                << " pit1 = " << pit1
                << " pit2 = " << pit2);
 
-       // It is not necessary anymore to compute metrics, but a redraw is needed
-       d->update_flags_ = (d->update_flags_ & ~Update::Force) | Update::ForceDraw;
+       // metrics is done, full drawing is necessary now
+       update_flags = (update_flags & ~Update::Force) | Update::ForceDraw;
 
        // Now update the positions of insets in the cache.
        updatePosCache();
@@ -2768,7 +2908,7 @@ void BufferView::updatePosCache()
 }
 
 
-void BufferView::insertLyXFile(FileName const & fname)
+void BufferView::insertLyXFile(FileName const & fname, bool const ignorelang)
 {
        LASSERT(d->cursor_.inTexted(), return);
 
@@ -2786,8 +2926,12 @@ void BufferView::insertLyXFile(FileName const & fname)
                ErrorList & el = buffer_.errorList("Parse");
                // Copy the inserted document error list into the current buffer one.
                el = buf.errorList("Parse");
+               ParagraphList & pars = buf.paragraphs();
+               if (ignorelang)
+                       // set main language of imported file to context language
+                       buf.changeLanguage(buf.language(), d->cursor_.getFont().language());
                buffer_.undo().recordUndo(d->cursor_);
-               cap::pasteParagraphList(d->cursor_, buf.paragraphs(),
+               cap::pasteParagraphList(d->cursor_, pars,
                                             buf.params().documentClassPtr(), el);
                res = _("Document %1$s inserted.");
        } else {
@@ -2904,22 +3048,34 @@ bool BufferView::paragraphVisible(DocIterator const & dit) const
 
 void BufferView::caretPosAndHeight(Point & p, int & h) const
 {
+       int asc, des;
        Cursor const & cur = cursor();
-       Font const font = cur.real_current_font;
-       frontend::FontMetrics const & fm = theFontMetrics(font);
-       int const asc = fm.maxAscent();
-       int const des = fm.maxDescent();
+       if (cur.inMathed()) {
+               MathRow const & mrow = mathRow(&cur.cell());
+               asc = mrow.caret_ascent;
+               des = mrow.caret_descent;
+       } else {
+               Font const font = cur.real_current_font;
+               frontend::FontMetrics const & fm = theFontMetrics(font);
+               asc = fm.maxAscent();
+               des = fm.maxDescent();
+       }
        h = asc + des;
        p = getPos(cur);
        p.y_ -= asc;
 }
 
 
-bool BufferView::cursorInView(Point const & p, int h) const
+bool BufferView::caretInView() const
 {
-       Cursor const & cur = cursor();
+       if (!paragraphVisible(cursor()))
+               return false;
+       Point p;
+       int h;
+       caretPosAndHeight(p, h);
+
        // does the cursor touch the screen ?
-       if (p.y_ + h < 0 || p.y_ >= workHeight() || !paragraphVisible(cur))
+       if (p.y_ + h < 0 || p.y_ >= workHeight())
                return false;
        return true;
 }
@@ -2944,30 +3100,24 @@ int BufferView::horizScrollOffset(Text const * text,
 }
 
 
-bool BufferView::hadHorizScrollOffset(Text const * text,
-                                      pit_type pit, pos_type pos) const
-{
-       return !d->last_row_slice_.empty()
-              && &text->inset() == d->last_row_slice_.inset().asInsetText()
-              && pit ==  d->last_row_slice_.pit()
-              && pos ==  d->last_row_slice_.pos();
-}
-
-
 void BufferView::setCurrentRowSlice(CursorSlice const & rowSlice)
 {
        // nothing to do if the cursor was already on this row
-       if (d->current_row_slice_ == rowSlice) {
-               d->last_row_slice_ = CursorSlice();
+       if (d->current_row_slice_ == rowSlice)
                return;
-       }
 
        // if the (previous) current row was scrolled, we have to
        // remember it in order to repaint it next time.
-       if (d->horiz_scroll_offset_ != 0)
-               d->last_row_slice_ = d->current_row_slice_;
-       else
-               d->last_row_slice_ = CursorSlice();
+       if (d->horiz_scroll_offset_ != 0) {
+               // search the old row in cache and mark it changed
+               for (auto & tm_pair : d->text_metrics_) {
+                       if (&tm_pair.first->inset() == rowSlice.inset().asInsetText()) {
+                               tm_pair.second.setRowChanged(rowSlice.pit(), rowSlice.pos());
+                               // We found it, no need to continue.
+                               break;
+                       }
+               }
+       }
 
        // Since we changed row, the scroll offset is not valid anymore
        d->horiz_scroll_offset_ = 0;
@@ -2975,23 +3125,6 @@ void BufferView::setCurrentRowSlice(CursorSlice const & rowSlice)
 }
 
 
-namespace {
-
-bool sliceInRow(CursorSlice const & cs, Text const * text, Row const & row)
-{
-       return !cs.empty() && cs.text() == text && cs.pit() == row.pit()
-               && row.pos() <= cs.pos() && cs.pos() <= row.endpos();
-}
-
-}
-
-
-bool BufferView::needRepaint(Text const * text, Row const & row) const
-{
-       return d->repaint_caret_row_ && sliceInRow(d->caret_slice_, text, row);
-}
-
-
 void BufferView::checkCursorScrollOffset()
 {
        CursorSlice rowSlice = d->cursor_.bottom();
@@ -3041,8 +3174,7 @@ void BufferView::checkCursorScrollOffset()
                       << d->horiz_scroll_offset_ << " to " << offset);
 
        if (d->update_strategy_ == NoScreenUpdate
-           && (offset != d->horiz_scroll_offset_
-               || !d->last_row_slice_.empty())) {
+           && offset != d->horiz_scroll_offset_) {
                // FIXME: if one uses SingleParUpdate, then home/end
                // will not work on long rows. Why?
                d->update_strategy_ = FullScreenUpdate;
@@ -3056,23 +3188,13 @@ void BufferView::draw(frontend::Painter & pain, bool paint_caret)
 {
        if (height_ == 0 || width_ == 0)
                return;
-       LYXERR(Debug::PAINTING, "\t\t*** START DRAWING ***");
-
+       LYXERR(Debug::PAINTING, (pain.isNull() ? "\t\t--- START NODRAW ---"
+                                : "\t\t*** START DRAWING ***"));
        Text & text = buffer_.text();
        TextMetrics const & tm = d->text_metrics_[&text];
        int const y = tm.first().second->position();
        PainterInfo pi(this, pain);
 
-       /**  A repaint of the previous caret row is needed if there is
-        *  caret painted on screen and either
-        *   1/ a new caret has to be painted at a place different from
-        *      the existing one;
-        *   2/ there is no need for a caret anymore.
-        */
-       d->repaint_caret_row_ = !d->caret_slice_.empty() &&
-               ((paint_caret && d->cursor_.top() != d->caret_slice_)
-                || ! paint_caret);
-
        // Check whether the row where the cursor lives needs to be scrolled.
        // Update the drawing strategy if needed.
        checkCursorScrollOffset();
@@ -3084,11 +3206,10 @@ void BufferView::draw(frontend::Painter & pain, bool paint_caret)
                // however, the different coordinates of insets and paragraphs
                // needs to be updated.
                LYXERR(Debug::PAINTING, "Strategy: NoScreenUpdate");
-               pi.full_repaint = false;
                if (pain.isNull()) {
                        pi.full_repaint = true;
                        tm.draw(pi, 0, y);
-               } else if (d->repaint_caret_row_) {
+               } else {
                        pi.full_repaint = false;
                        tm.draw(pi, 0, y);
                }
@@ -3136,7 +3257,8 @@ void BufferView::draw(frontend::Painter & pain, bool paint_caret)
                }
                break;
        }
-       LYXERR(Debug::PAINTING, "\n\t\t*** END DRAWING  ***");
+       LYXERR(Debug::PAINTING, (pain.isNull() ? "\t\t --- END NODRAW ---"
+                               : "\t\t *** END DRAWING ***"));
 
        // The scrollbar needs an update.
        updateScrollbar();
@@ -3147,24 +3269,29 @@ void BufferView::draw(frontend::Painter & pain, bool paint_caret)
        for (pit_type pit = firstpm.first; pit <= lastpm.first; ++pit) {
                ParagraphMetrics const & pm = tm.parMetrics(pit);
                if (pm.position() + pm.descent() > 0) {
+                       if (d->anchor_pit_ != pit
+                           || d->anchor_ypos_ != pm.position())
+                               LYXERR(Debug::PAINTING, "Found new anchor pit = " << d->anchor_pit_
+                                      << "  anchor ypos = " << d->anchor_ypos_);
                        d->anchor_pit_ = pit;
                        d->anchor_ypos_ = pm.position();
                        break;
                }
        }
-       LYXERR(Debug::PAINTING, "Found new anchor pit = " << d->anchor_pit_
-               << "  anchor ypos = " << d->anchor_ypos_);
-
        if (!pain.isNull()) {
                // reset the update flags, everything has been done
                d->update_flags_ = Update::None;
        }
 
-       // Remember what has just been done for the next draw() step
-       if (paint_caret)
-               d->caret_slice_ = d->cursor_.top();
-       else
-               d->caret_slice_ = CursorSlice();
+       // If a caret has to be painted, mark its text row as dirty to
+       //make sure that it will be repainted on next redraw.
+       /* FIXME: investigate whether this can be avoided when the cursor did not
+        * move at all
+        */
+       if (paint_caret) {
+               Row const & caret_row = d->cursor_.textRow();
+               caret_row.changed(true);
+       }
 }