]> git.lyx.org Git - lyx.git/blobdiff - src/BufferView.cpp
* src/frontends/GuiDocument.{cpp,h}:
[lyx.git] / src / BufferView.cpp
index 8b720f2d33d155c2cb323613c7be1e3a97922579..c93966b2572a838ba79ea99d6626935ccb4e0614 100644 (file)
@@ -58,6 +58,7 @@
 #include "insets/InsetText.h"
 
 #include "frontends/alert.h"
+#include "frontends/Application.h"
 #include "frontends/Delegates.h"
 #include "frontends/FontMetrics.h"
 #include "frontends/Painter.h"
@@ -67,6 +68,7 @@
 
 #include "support/convert.h"
 #include "support/debug.h"
+#include "support/ExceptionMessage.h"
 #include "support/FileFilterList.h"
 #include "support/filetools.h"
 #include "support/gettext.h"
@@ -176,6 +178,7 @@ void gotoInset(BufferView * bv, vector<InsetCode> const & codes,
 
        tmpcur.clearSelection();
        bv->setCursor(tmpcur);
+       bv->showCursor();
 }
 
 
@@ -349,9 +352,7 @@ void BufferView::processUpdateFlags(Update::flags flags)
                << ", singlepar = " << (flags & Update::SinglePar)
                << "]  buffer: " << &buffer_);
 
-       // Update macro store
-       if (!(cursor().inMathed() && cursor().inMacroMode()))
-               buffer_.updateMacros();
+       buffer_.updateMacros();
 
        // Now do the first drawing step if needed. This consists on updating
        // the CoordCache in updateMetrics().
@@ -387,35 +388,27 @@ void BufferView::processUpdateFlags(Update::flags flags)
                return;
        }
 
-       bool const full_metrics = flags & Update::Force;
+       bool const full_metrics = flags & Update::Force || !singleParUpdate();
 
-       if (full_metrics || !singleParUpdate()) {
-               if (flags & Update::FitCursor && fitCursor()) {
-                       showCursor();
-                       return;
-               }
+       if (full_metrics)
                // We have to update the full screen metrics.
                updateMetrics();
-       }
 
        if (!(flags & Update::FitCursor)) {
+               // Nothing to do anymore. Trigger a redraw and return
                buffer_.changed();
                return;
        }
 
-       //FIXME: updateMetrics() does not update paragraph position
+       // updateMetrics() does not update paragraph position
        // This is done at draw() time. So we need a redraw!
-
        buffer_.changed();
-       if (!fitCursor())
-               // The screen has already been updated thanks to the
-               // 'buffer_.changed()' call three line above. So no need
-               // to redraw again.
-               return;
 
-       // The screen needs to be recentered around the cursor position so
-       // refresh it:
-       showCursor();
+       if (fitCursor()) {
+               // The cursor is off screen so ensure it is visible.
+               // refresh it:
+               showCursor();
+       }
 }
 
 
@@ -432,12 +425,12 @@ void BufferView::updateScrollbar()
                << " curr par: " << d->cursor_.bottom().pit()
                << " default height " << defaultRowHeight());
 
-       int const parsize = int(t.paragraphs().size() - 1);
+       int const parsize = int(t.paragraphs().size());
        if (d->par_height_.size() != parsize) {
                d->par_height_.clear();
-               // FIXME: We assume a default paragraph height of 4 rows. This
+               // FIXME: We assume a default paragraph height of 2 rows. This
                // should probably be pondered with the screen width.
-               d->par_height_.resize(parsize, defaultRowHeight() * 4);
+               d->par_height_.resize(parsize, defaultRowHeight() * 2);
        }
 
        // It would be better to fix the scrollbar to understand
@@ -450,24 +443,35 @@ void BufferView::updateScrollbar()
        for (pit_type pit = first.first; pit <= last.first; ++pit) {
                ParagraphMetrics const & pm = tm.parMetrics(pit);
                d->par_height_[pit] = pm.height();
-               if (first_visible_pit < 0 && pm.position() + pm.descent() > 0)
-                       first_visible_pit = pit;
+               if (first_visible_pit >= 0 || pm.position() + pm.descent() <= 0)
+                       continue;
+               first_visible_pit = pit;
+               LYXERR(Debug::SCROLLING, "first visible pit " << first_visible_pit);
+               // FIXME: we should look for the first visible row within
+               // the deepest inset!
+               int row_pos = pm.position();
+               size_t const nrows = pm.rows().size();
+               for (size_t i = 0; i != nrows; ++i) {
+                       Row const & row = pm.rows()[i];
+                       if (row_pos >= 0) {
+                               LYXERR(Debug::SCROLLING, "first visible row " << i
+                                       << "(row pos = " << row_pos << ");");
+                               break;
+                       }
+                       row_pos += row.height();
+               }
+               d->scrollbarParameters_.position = row_pos;
        }
 
-       LYXERR(Debug::SCROLLING, "first_visible_pit " << first_visible_pit);
-
        d->scrollbarParameters_.height = 0;
        for (size_t i = 0; i != d->par_height_.size(); ++i) {
+               if (i == first_visible_pit)
+                       d->scrollbarParameters_.position += d->scrollbarParameters_.height;
                d->scrollbarParameters_.height += d->par_height_[i];
-               if (i != first_visible_pit)
-                       continue;
-               // FIXME: we should look for the first visible row within
-               // the deepest inset!
-               d->scrollbarParameters_.position = d->scrollbarParameters_.height;
        }
 
-       d->scrollbarParameters_.lineScrollHeight =
-               tm.parMetrics(first_visible_pit).rows()[0].height();
+       // We prefer fixed size line scrolling.
+       d->scrollbarParameters_.lineScrollHeight = defaultRowHeight();
 }
 
 
@@ -477,11 +481,34 @@ ScrollbarParameters const & BufferView::scrollbarParameters() const
 }
 
 
+docstring BufferView::toolTip(int x, int y) const
+{
+       // Get inset under mouse, if there is one.
+       Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
+       if (!covering_inset)
+               // No inset, no tooltip...
+               return docstring();
+       return covering_inset->toolTip(*this, x, y);
+}
+
+
+docstring BufferView::contextMenu(int x, int y) const
+{
+       // Get inset under mouse, if there is one.
+       Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
+       if (covering_inset)
+               return covering_inset->contextMenu(*this, x, y);
+
+       // FIXME: Do something more elaborate here.
+       return from_ascii("edit");
+}
+
+
 void BufferView::scrollDocView(int value)
 {
        int const offset = value - d->scrollbarParameters_.position;
-       //TextMetrics & tm = d->text_metrics_[&buffer_.text()];
-       if (abs(offset) <= 3*height_) {
+       // If the offset is less than 2 screen height, prefer to scroll instead.
+       if (abs(offset) <= 2 * height_) {
                scroll(offset);
                return;
        }
@@ -679,7 +706,15 @@ void BufferView::showCursor()
        CursorSlice & bot = d->cursor_.bottom();
        TextMetrics & tm = d->text_metrics_[bot.text()];
 
-       int const bot_pit = d->cursor_.bottom().pit();
+       pos_type const max_pit = pos_type(bot.text()->paragraphs().size() - 1);
+       int bot_pit = d->cursor_.bottom().pit();
+       if (bot_pit > max_pit) {
+               // FIXME: Why does this happen?
+               LYXERR0("bottom pit is greater that max pit: "
+                       << bot_pit << " > " << max_pit);
+               bot_pit = max_pit;
+       }
+
        if (bot_pit == tm.first().first - 1)
                tm.newParMetricsUp();
        else if (bot_pit == tm.last().first + 1)
@@ -691,9 +726,9 @@ void BufferView::showCursor()
                int ypos = pm.position() + offset;
                Dimension const & row_dim = d->cursor_.textRow().dimension();
                if (ypos - row_dim.ascent() < 0)
-                       scrollUp(- ypos + d->cursor_.textRow().ascent());
+                       scrollUp(- ypos + row_dim.ascent());
                else if (ypos + row_dim.descent() > height_)
-                       scrollDown(ypos - height_ + d->cursor_.textRow().descent());
+                       scrollDown(ypos - height_ + row_dim.descent());
                // else, nothing to do, the cursor is already visible so we just return.
                return;
        }
@@ -703,15 +738,14 @@ void BufferView::showCursor()
        int offset = coordOffset(d->cursor_, d->cursor_.boundary()).y_;
 
        d->anchor_pit_ = bot_pit;
+       Dimension const & row_dim = d->cursor_.textRow().dimension();
 
        if (d->anchor_pit_ == 0)
                d->anchor_ypos_ = offset + pm.ascent();
-       else if (d->anchor_pit_ >= pos_type(bot.text()->paragraphs().size() - 1)) {
-               d->anchor_pit_ = bot.text()->paragraphs().size() - 1;
-               d->anchor_ypos_ = offset + pm.height() - height_;
-       } else {
-               d->anchor_ypos_ = offset + pm.ascent() - height_ / 2;
-       }
+       else if (d->anchor_pit_ == max_pit)
+               d->anchor_ypos_ = height_ - offset - row_dim.descent();
+       else
+               d->anchor_ypos_ = defaultRowHeight() * 2 - offset - row_dim.descent();
 
        updateMetrics();
        buffer_.changed();
@@ -753,7 +787,7 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
        case LFUN_SCREEN_RECENTER:
        case LFUN_BIBTEX_DATABASE_ADD:
        case LFUN_BIBTEX_DATABASE_DEL:
-       case LFUN_WORDS_COUNT:
+       case LFUN_STATISTICS:
        case LFUN_NEXT_INSET_TOGGLE:
                flag.enabled(true);
                break;
@@ -797,6 +831,7 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 
        case LFUN_SCREEN_UP:
        case LFUN_SCREEN_DOWN:
+       case LFUN_SCROLL:
                flag.enabled(true);
                break;
 
@@ -869,7 +904,7 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 }
 
 
-Update::flags BufferView::dispatch(FuncRequest const & cmd)
+bool BufferView::dispatch(FuncRequest const & cmd)
 {
        //lyxerr << [ cmd = " << cmd << "]" << endl;
 
@@ -881,27 +916,25 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                << " button[" << cmd.button() << ']');
 
        Cursor & cur = d->cursor_;
-       // Default Update flags.
-       Update::flags updateFlags = Update::Force | Update::FitCursor;
 
        switch (cmd.action) {
 
        case LFUN_UNDO:
                cur.message(_("Undo"));
                cur.clearSelection();
-               if (!cur.textUndo()) {
+               if (!cur.textUndo())
                        cur.message(_("No further undo information"));
-                       updateFlags = Update::None;
-               }
+               else
+                       processUpdateFlags(Update::Force | Update::FitCursor);
                break;
 
        case LFUN_REDO:
                cur.message(_("Redo"));
                cur.clearSelection();
-               if (!cur.textRedo()) {
+               if (!cur.textRedo())
                        cur.message(_("No further redo information"));
-                       updateFlags = Update::None;
-               }
+               else
+                       processUpdateFlags(Update::Force | Update::FitCursor);
                break;
 
        case LFUN_FONT_STATE:
@@ -947,12 +980,12 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                                if (b == &buffer_) {
                                        // Set the cursor
                                        setCursor(makeDocIterator(par, 0));
+                                       showCursor();
                                } else {
                                        // Switch to other buffer view and resend cmd
                                        theLyXFunc().dispatch(FuncRequest(
                                                LFUN_BUFFER_SWITCH, b->absFileName()));
                                        theLyXFunc().dispatch(cmd);
-                                       updateFlags = Update::None;
                                }
                                break;
                        }
@@ -1101,7 +1134,7 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                break;
        }
 
-       case LFUN_WORDS_COUNT: {
+       case LFUN_STATISTICS: {
                DocIterator from, to;
                if (cur.selection()) {
                        from = cur.selectionBegin();
@@ -1110,24 +1143,30 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                        from = doc_iterator_begin(buffer_.inset());
                        to = doc_iterator_end(buffer_.inset());
                }
-               int const count = countWords(from, to);
+               int const words = countWords(from, to);
+               int const chars = countChars(from, to, false);
+               int const chars_blanks = countChars(from, to, true);
                docstring message;
-               if (count != 1) {
-                       if (cur.selection())
-                               message = bformat(_("%1$d words in selection."),
-                                         count);
-                               else
-                                       message = bformat(_("%1$d words in document."),
-                                                         count);
-               }
-               else {
-                       if (cur.selection())
-                               message = _("One word in selection.");
-                       else
-                               message = _("One word in document.");
-               }
-
-               Alert::information(_("Count words"), message);
+               if (cur.selection())
+                       message = _("Statistics for the selection:\n");
+               else
+                       message = _("Statistics for the document:\n");
+               if (words != 1)
+                       message += bformat(_("\n%1$d words"), words);
+               else
+                       message += _("\nOne word");
+               if (chars_blanks != 1)
+                       message += bformat(_("\n%1$d characters (including blanks)"),
+                                         chars_blanks);
+               else
+                       message += _("\nOne character (including blanks)");
+               if (chars != 1)
+                       message += bformat(_("\n%1$d characters (excluding blanks)"),
+                                         chars);
+               else
+                       message += _("\nOne character (excluding blanks)");
+
+               Alert::information(_("Statistics"), message);
        }
                break;
 
@@ -1136,10 +1175,15 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                buffer_.params().compressed = !buffer_.params().compressed;
                break;
        
-       case LFUN_BUFFER_TOGGLE_EMBEDDING:
+       case LFUN_BUFFER_TOGGLE_EMBEDDING: {
                // turn embedding on/off
-               buffer_.embeddedFiles().enable(!buffer_.params().embedded);
+               try {
+                       buffer_.embeddedFiles().enable(!buffer_.params().embedded, buffer_);
+               } catch (ExceptionMessage const & message) {
+                       Alert::error(message.title_, message.details_);
+               }
                break;
+       }
 
        case LFUN_NEXT_INSET_TOGGLE: {
                // this is the real function we want to invoke
@@ -1163,9 +1207,11 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                if (!cur.result().dispatched())
                        cur.dispatch(tmpcmd);
 
-               if (cur.result().dispatched())
-                       cur.clearSelection();
-
+               if (!cur.result().dispatched())
+                       // It did not work too; no action needed.
+                       break;
+               cur.clearSelection();
+               processUpdateFlags(Update::SinglePar | Update::FitCursor);
                break;
        }
 
@@ -1182,13 +1228,18 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
                //FIXME: what to do with cur.x_target()?
                cur.finishUndo();
-               // The metrics are already up to date. see scroll()
-               updateFlags = Update::None;
                break;
        }
 
+       case LFUN_SCROLL:
+               lfunScroll(cmd);
+               break;
+
        case LFUN_SCREEN_UP_SELECT:
        case LFUN_SCREEN_DOWN_SELECT: {
+               // Those two are not ready yet for consumption.
+               return false;
+
                cur.selHandle(true);
                size_t initial_depth = cur.depth();
                Point const p = getPos(cur, cur.boundary());
@@ -1204,15 +1255,14 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                // But no screen update is needed.
                d->update_strategy_ = NoScreenUpdate;
                buffer_.changed();
-               updateFlags = Update::Force | Update::FitCursor;
                break;
        }
 
        default:
-               updateFlags = Update::None;
+               return false;
        }
 
-       return updateFlags;
+       return true;
 }
 
 
@@ -1265,7 +1315,8 @@ void BufferView::resize(int width, int height)
 }
 
 
-Inset const * BufferView::getCoveringInset(Text const & text, int x, int y)
+Inset const * BufferView::getCoveringInset(Text const & text,
+               int x, int y) const
 {
        TextMetrics & tm = d->text_metrics_[&text];
        Inset * inset = tm.checkInsetHit(x, y);
@@ -1374,6 +1425,27 @@ void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
 }
 
 
+void BufferView::lfunScroll(FuncRequest const & cmd)
+{
+       string const scroll_type = cmd.getArg(0);
+       int const scroll_step = 
+               (scroll_type == "line")? d->scrollbarParameters_.lineScrollHeight
+               : (scroll_type == "page")? height_ : 0;
+       if (scroll_step == 0)
+               return;
+       string const scroll_quantity = cmd.getArg(1);
+       if (scroll_quantity == "up")
+               scrollUp(scroll_step);
+       else if (scroll_quantity == "down")
+               scrollDown(scroll_step);
+       else {
+               int const scroll_value = convert<int>(scroll_quantity);
+               if (scroll_value)
+                       scroll(scroll_step * scroll_value);
+       }
+}
+
+
 void BufferView::scroll(int y)
 {
        if (y > 0)
@@ -1453,7 +1525,7 @@ void BufferView::gotoLabel(docstring const & label)
                it->getLabelList(buffer_, labels);
                if (find(labels.begin(), labels.end(), label) != labels.end()) {
                        setCursor(it);
-                       processUpdateFlags(Update::FitCursor);
+                       showCursor();
                        return;
                }
        }
@@ -1517,6 +1589,8 @@ bool BufferView::checkDepm(Cursor & cur, Cursor & old)
        if (!changed)
                return false;
 
+       d->cursor_ = cur;
+
        updateLabels(buffer_);
 
        updateMetrics();
@@ -1672,7 +1746,7 @@ void BufferView::updateMetrics()
        int y1 = d->anchor_ypos_ - anchor_pm.ascent();
        // We are now just above the anchor paragraph.
        pit_type pit1 = d->anchor_pit_ - 1;
-       for (; pit1 >= 0 && y1 > 0; --pit1) {
+       for (; pit1 >= 0 && y1 >= 0; --pit1) {
                tm.redoParagraph(pit1);
                ParagraphMetrics & pm = tm.par_metrics_[pit1];
                y1 -= pm.descent();
@@ -1685,7 +1759,7 @@ void BufferView::updateMetrics()
        int y2 = d->anchor_ypos_ + anchor_pm.descent();
        // We are now just below the anchor paragraph.
        pit_type pit2 = d->anchor_pit_ + 1;
-       for (; pit2 < npit && y2 < height_; ++pit2) {
+       for (; pit2 < npit && y2 <= height_; ++pit2) {
                tm.redoParagraph(pit2);
                ParagraphMetrics & pm = tm.par_metrics_[pit2];
                y2 += pm.ascent();