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lyx_mirror/src/BufferView.C
Jean-Marc Lasgouttes 976d38f7b7 * BufferView.C (mouseSetCursor): if the cursor was in an empty 
script inset and the new position is in the nucleus of the inset,
	notifyCursorLeaves will kill the script inset itself. So we check
	all the elements of the cursor to make sure that they are correct
	(bug 2933).



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16729 a592a061-630c-0410-9148-cb99ea01b6c8
2007-01-17 15:32:43 +00:00

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/**
* \file BufferView.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Alfredo Braunstein
* \author Lars Gullik Bjønnes
* \author John Levon
* \author André Pönitz
* \author Jürgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "BufferView.h"
#include "buffer.h"
#include "buffer_funcs.h"
#include "bufferlist.h"
#include "bufferparams.h"
#include "bufferview_funcs.h"
#include "coordcache.h"
#include "CutAndPaste.h"
#include "debug.h"
#include "dispatchresult.h"
#include "errorlist.h"
#include "factory.h"
#include "FloatList.h"
#include "funcrequest.h"
#include "FuncStatus.h"
#include "gettext.h"
#include "intl.h"
#include "insetiterator.h"
#include "language.h"
#include "LaTeXFeatures.h"
#include "lyx_cb.h" // added for Dispatch functions
#include "lyx_main.h"
#include "lyxfind.h"
#include "lyxfunc.h"
#include "lyxlayout.h"
#include "lyxtext.h"
#include "lyxtextclass.h"
#include "lyxrc.h"
#include "session.h"
#include "paragraph.h"
#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
#include "pariterator.h"
#include "texrow.h"
#include "toc.h"
#include "undo.h"
#include "vspace.h"
#include "WordLangTuple.h"
#include "metricsinfo.h"
#include "insets/insetbibtex.h"
#include "insets/insetcommand.h" // ChangeRefs
#include "insets/insetref.h"
#include "insets/insettext.h"
#include "frontends/Alert.h"
#include "frontends/FileDialog.h"
#include "frontends/FontMetrics.h"
#include "frontends/Selection.h"
#include "graphics/Previews.h"
#include "support/convert.h"
#include "support/filefilterlist.h"
#include "support/filetools.h"
#include "support/package.h"
#include "support/types.h"
#include <boost/bind.hpp>
#include <boost/current_function.hpp>
#include <functional>
#include <vector>
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::package;
using std::distance;
using std::endl;
using std::istringstream;
using std::make_pair;
using std::min;
using std::max;
using std::mem_fun_ref;
using std::string;
using std::vector;
namespace Alert = frontend::Alert;
namespace {
/// Return an inset of this class if it exists at the current cursor position
template <class T>
T * getInsetByCode(LCursor & cur, InsetBase::Code code)
{
T * inset = 0;
DocIterator it = cur;
if (it.nextInset() &&
it.nextInset()->lyxCode() == code) {
inset = static_cast<T*>(it.nextInset());
}
return inset;
}
} // anon namespace
BufferView::BufferView()
: width_(0), height_(0), buffer_(0), wh_(0),
cursor_(*this),
multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
intl_(new Intl), last_inset_(0)
{
xsel_cache_.set = false;
intl_->initKeyMapper(lyxrc.use_kbmap);
}
BufferView::~BufferView()
{
}
Buffer * BufferView::buffer() const
{
return buffer_;
}
void BufferView::setBuffer(Buffer * b)
{
lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
<< "[ b = " << b << "]" << endl;
if (buffer_) {
// Save the actual cursor position and anchor inside the
// buffer so that it can be restored in case we rechange
// to this buffer later on.
buffer_->saveCursor(cursor_.selectionBegin(),
cursor_.selectionEnd());
// current buffer is going to be switched-off, save cursor pos
LyX::ref().session().lastFilePos().save(FileName(buffer_->fileName()),
boost::tie(cursor_.pit(), cursor_.pos()) );
}
// If we're quitting lyx, don't bother updating stuff
if (quitting) {
buffer_ = 0;
return;
}
// If we are closing current buffer, switch to the first in
// buffer list.
if (!b) {
lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
<< " No Buffer!" << endl;
// We are closing the buffer, use the first buffer as current
buffer_ = theBufferList().first();
} else {
// Set current buffer
buffer_ = b;
}
// Reset old cursor
cursor_ = LCursor(*this);
anchor_ref_ = 0;
offset_ref_ = 0;
if (buffer_) {
lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
<< "Buffer addr: " << buffer_ << endl;
cursor_.push(buffer_->inset());
cursor_.resetAnchor();
buffer_->text().setCurrentFont(cursor_);
if (buffer_->getCursor().size() > 0 &&
buffer_->getAnchor().size() > 0)
{
cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
cursor_.resetAnchor();
cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
cursor_.setSelection();
theSelection().haveSelection(cursor_.selection());
}
}
if (buffer_)
updateMetrics(false);
if (buffer_ && graphics::Previews::status() != LyXRC::PREVIEW_OFF)
graphics::Previews::get().generateBufferPreviews(*buffer_);
}
bool BufferView::loadLyXFile(FileName const & filename, bool tolastfiles)
{
// File already open?
if (theBufferList().exists(filename.absFilename())) {
docstring const file = makeDisplayPath(filename.absFilename(), 20);
docstring text = bformat(_("The document %1$s is already "
"loaded.\n\nDo you want to revert "
"to the saved version?"), file);
int const ret = Alert::prompt(_("Revert to saved document?"),
text, 0, 1, _("&Revert"), _("&Switch to document"));
if (ret != 0) {
setBuffer(theBufferList().getBuffer(filename.absFilename()));
return true;
}
// FIXME: should be LFUN_REVERT
if (!theBufferList().close(theBufferList().getBuffer(filename.absFilename()), false))
return false;
// Fall through to new load. (Asger)
buffer_ = 0;
}
Buffer * b = 0;
if (isFileReadable(filename)) {
b = theBufferList().newBuffer(filename.absFilename());
if (!lyx::loadLyXFile(b, filename)) {
theBufferList().release(b);
return false;
}
} else {
docstring text = bformat(_("The document %1$s does not yet "
"exist.\n\nDo you want to create "
"a new document?"), from_utf8(filename.absFilename()));
int const ret = Alert::prompt(_("Create new document?"),
text, 0, 1, _("&Create"), _("Cancel"));
if (ret == 0) {
b = newFile(filename.absFilename(), string(), true);
if (!b)
return false;
} else
return false;
}
setBuffer(b);
// Send the "errors" signal in case of parsing errors
b->errors("Parse");
// Update the labels and section numbering.
updateLabels(*buffer_);
// scroll to the position when the file was last closed
if (lyxrc.use_lastfilepos) {
pit_type pit;
pos_type pos;
boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(filename);
// if successfully move to pit (returned par_id is not zero), update metrics
if (moveToPosition(pit, 0, pos).get<1>()) {
if (fitCursor())
updateMetrics(false);
}
}
if (tolastfiles)
LyX::ref().session().lastFiles().add(FileName(b->fileName()));
return true;
}
void BufferView::resize()
{
if (!buffer_)
return;
lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
updateMetrics(false);
switchKeyMap();
}
bool BufferView::fitCursor()
{
if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
frontend::FontMetrics const & fm =
theFontMetrics(cursor_.getFont());
int const asc = fm.maxAscent();
int const des = fm.maxDescent();
Point const p = bv_funcs::getPos(*this, cursor_, cursor_.boundary());
if (p.y_ - asc >= 0 && p.y_ + des < height_)
return false;
}
center();
return true;
}
bool BufferView::multiParSel()
{
if (!cursor_.selection())
return false;
bool ret = multiparsel_cache_;
multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
// Either this, or previous selection spans paragraphs
return ret || multiparsel_cache_;
}
bool BufferView::update(Update::flags flags)
{
// last_inset_ points to the last visited inset. This pointer may become
// invalid because of keyboard editing. Since all such operations
// causes screen update(), I reset last_inset_ to avoid such a problem.
last_inset_ = 0;
// This is close to a hot-path.
if (lyxerr.debugging(Debug::DEBUG)) {
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< "[fitcursor = " << (flags & Update::FitCursor)
<< ", forceupdate = " << (flags & Update::Force)
<< ", singlepar = " << (flags & Update::SinglePar)
<< "] buffer: " << buffer_ << endl;
}
// Check needed to survive LyX startup
if (!buffer_)
return false;
if (lyxerr.debugging(Debug::WORKAREA)) {
lyxerr[Debug::WORKAREA] << "BufferView::update" << std::endl;
}
// Update macro store
buffer_->buildMacros();
// 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.
// Case when no explicit update is requested.
if (!flags) {
// 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;
if (flags & Update::MultiParSel)
full_metrics |= multiParSel();
bool const single_par = !full_metrics;
updateMetrics(single_par);
if (flags & Update::FitCursor && fitCursor())
updateMetrics(false);
// tell the frontend to update the screen.
return true;
}
void BufferView::updateScrollbar()
{
if (!buffer_) {
lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
<< " no text in updateScrollbar" << endl;
scrollbarParameters_.reset();
return;
}
LyXText & t = buffer_->text();
TextMetrics & tm = text_metrics_[&t];
int const parsize = int(t.paragraphs().size() - 1);
if (anchor_ref_ > parsize) {
anchor_ref_ = parsize;
offset_ref_ = 0;
}
if (lyxerr.debugging(Debug::GUI)) {
lyxerr[Debug::GUI]
<< BOOST_CURRENT_FUNCTION
<< " Updating scrollbar: height: " << t.paragraphs().size()
<< " curr par: " << cursor_.bottom().pit()
<< " default height " << defaultRowHeight() << endl;
}
// It would be better to fix the scrollbar to understand
// values in [0..1] and divide everything by wh
// estimated average paragraph height:
if (wh_ == 0)
wh_ = height_ / 4;
int h = tm.parMetrics(anchor_ref_).height();
// Normalize anchor/offset (MV):
while (offset_ref_ > h && anchor_ref_ < parsize) {
anchor_ref_++;
offset_ref_ -= h;
h = tm.parMetrics(anchor_ref_).height();
}
// Look at paragraph heights on-screen
int sumh = 0;
int nh = 0;
for (pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
if (sumh > height_)
break;
int const h2 = tm.parMetrics(pit).height();
sumh += h2;
nh++;
}
BOOST_ASSERT(nh);
int const hav = sumh / nh;
// More realistic average paragraph height
if (hav > wh_)
wh_ = hav;
BOOST_ASSERT(h);
scrollbarParameters_.height = (parsize + 1) * wh_;
scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
}
ScrollbarParameters const & BufferView::scrollbarParameters() const
{
return scrollbarParameters_;
}
void BufferView::scrollDocView(int value)
{
lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
<< "[ value = " << value << "]" << endl;
if (!buffer_)
return;
LyXText & t = buffer_->text();
TextMetrics & tm = text_metrics_[&t];
float const bar = value / float(wh_ * t.paragraphs().size());
anchor_ref_ = int(bar * t.paragraphs().size());
if (anchor_ref_ > int(t.paragraphs().size()) - 1)
anchor_ref_ = int(t.paragraphs().size()) - 1;
tm.redoParagraph(anchor_ref_);
int const h = tm.parMetrics(anchor_ref_).height();
offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
updateMetrics(false);
}
void BufferView::setCursorFromScrollbar()
{
LyXText & t = buffer_->text();
int const height = 2 * defaultRowHeight();
int const first = height;
int const last = height_ - height;
LCursor & cur = cursor_;
bv_funcs::CurStatus st = bv_funcs::status(this, cur);
switch (st) {
case bv_funcs::CUR_ABOVE:
t.setCursorFromCoordinates(cur, 0, first);
cur.clearSelection();
break;
case bv_funcs::CUR_BELOW:
t.setCursorFromCoordinates(cur, 0, last);
cur.clearSelection();
break;
case bv_funcs::CUR_INSIDE:
int const y = bv_funcs::getPos(*this, cur, cur.boundary()).y_;
int const newy = min(last, max(y, first));
if (y != newy) {
cur.reset(buffer_->inset());
t.setCursorFromCoordinates(cur, 0, newy);
}
}
}
Change const BufferView::getCurrentChange() const
{
if (!cursor_.selection())
return Change(Change::UNCHANGED);
DocIterator dit = cursor_.selectionBegin();
return dit.paragraph().lookupChange(dit.pos());
}
void BufferView::saveBookmark(bool persistent)
{
LyX::ref().session().bookmarks().save(
FileName(buffer_->fileName()),
cursor_.pit(),
cursor_.paragraph().id(),
cursor_.pos(),
persistent
);
if (persistent)
// emit message signal.
message(_("Save bookmark"));
}
boost::tuple<pit_type, int> BufferView::moveToPosition(pit_type par_pit, int par_id, pos_type par_pos)
{
cursor_.clearSelection();
// if a valid par_id is given, try it first
if (par_id > 0) {
ParIterator par = buffer_->getParFromID(par_id);
if (par != buffer_->par_iterator_end()) {
setCursor(makeDocIterator(par, min(par->size(), par_pos)));
return boost::make_tuple(cursor_.pit(), par_id);
}
}
// if par_id == 0, or searching through par_id failed
if (static_cast<size_t>(par_pit) < buffer_->paragraphs().size()) {
ParIterator it = buffer_->par_iterator_begin();
ParIterator const end = buffer_->par_iterator_end();
for (; it != end; ++it)
if (it.pit() == par_pit) {
// restored pos may be bigger than it->size
setCursor(makeDocIterator(it, min(par_pos, it->size())));
return boost::make_tuple(par_pit, it->id());
}
}
// both methods fail
return boost::make_tuple(pit_type(0), 0);
}
void BufferView::switchKeyMap()
{
if (!lyxrc.rtl_support)
return;
if (getLyXText()->real_current_font.isRightToLeft()) {
if (intl_->keymap == Intl::PRIMARY)
intl_->keyMapSec();
} else {
if (intl_->keymap == Intl::SECONDARY)
intl_->keyMapPrim();
}
}
int BufferView::workWidth() const
{
return width_;
}
void BufferView::center()
{
CursorSlice & bot = cursor_.bottom();
TextMetrics & tm = text_metrics_[bot.text()];
pit_type const pit = bot.pit();
tm.redoParagraph(pit);
ParagraphMetrics const & pm = tm.parMetrics(pit);
anchor_ref_ = pit;
offset_ref_ = bv_funcs::coordOffset(*this, cursor_, cursor_.boundary()).y_
+ pm.ascent() - height_ / 2;
}
FuncStatus BufferView::getStatus(FuncRequest const & cmd)
{
FuncStatus flag;
switch (cmd.action) {
case LFUN_UNDO:
flag.enabled(!buffer_->undostack().empty());
break;
case LFUN_REDO:
flag.enabled(!buffer_->redostack().empty());
break;
case LFUN_FILE_INSERT:
case LFUN_FILE_INSERT_PLAINTEXT_PARA:
case LFUN_FILE_INSERT_PLAINTEXT:
case LFUN_BOOKMARK_SAVE:
// FIXME: Actually, these LFUNS should be moved to LyXText
flag.enabled(cursor_.inTexted());
break;
case LFUN_FONT_STATE:
case LFUN_LABEL_INSERT:
case LFUN_PARAGRAPH_GOTO:
// FIXME handle non-trivially
case LFUN_OUTLINE_UP:
case LFUN_OUTLINE_DOWN:
case LFUN_OUTLINE_IN:
case LFUN_OUTLINE_OUT:
case LFUN_NOTE_NEXT:
case LFUN_REFERENCE_NEXT:
case LFUN_WORD_FIND:
case LFUN_WORD_REPLACE:
case LFUN_MARK_OFF:
case LFUN_MARK_ON:
case LFUN_MARK_TOGGLE:
case LFUN_SCREEN_RECENTER:
case LFUN_BIBTEX_DATABASE_ADD:
case LFUN_BIBTEX_DATABASE_DEL:
case LFUN_WORDS_COUNT:
case LFUN_NEXT_INSET_TOGGLE:
flag.enabled(true);
break;
case LFUN_LABEL_GOTO: {
flag.enabled(!cmd.argument().empty()
|| getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
break;
}
case LFUN_CHANGES_TRACK:
flag.enabled(true);
flag.setOnOff(buffer_->params().trackChanges);
break;
case LFUN_CHANGES_OUTPUT: {
OutputParams runparams;
LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
flag.enabled(buffer_ && features.isAvailable("dvipost"));
flag.setOnOff(buffer_->params().outputChanges);
break;
}
case LFUN_CHANGES_MERGE:
case LFUN_CHANGE_NEXT:
case LFUN_ALL_CHANGES_ACCEPT:
case LFUN_ALL_CHANGES_REJECT:
// 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: {
flag.setOnOff(buffer_->params().compressed);
break;
}
default:
flag.enabled(false);
}
return flag;
}
bool BufferView::dispatch(FuncRequest const & cmd)
{
//lyxerr << BOOST_CURRENT_FUNCTION
// << [ cmd = " << cmd << "]" << endl;
// Make sure that the cached BufferView is correct.
lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
<< " action[" << cmd.action << ']'
<< " arg[" << to_utf8(cmd.argument()) << ']'
<< " x[" << cmd.x << ']'
<< " y[" << cmd.y << ']'
<< " button[" << cmd.button() << ']'
<< endl;
LCursor & cur = cursor_;
switch (cmd.action) {
case LFUN_UNDO:
if (buffer_) {
cur.message(_("Undo"));
cur.clearSelection();
if (!textUndo(*this))
cur.message(_("No further undo information"));
update();
switchKeyMap();
}
break;
case LFUN_REDO:
if (buffer_) {
cur.message(_("Redo"));
cur.clearSelection();
if (!textRedo(*this))
cur.message(_("No further redo information"));
update();
switchKeyMap();
}
break;
case LFUN_FILE_INSERT:
// FIXME UNICODE
menuInsertLyXFile(to_utf8(cmd.argument()));
break;
case LFUN_FILE_INSERT_PLAINTEXT_PARA:
// FIXME UNICODE
insertPlaintextFile(this, to_utf8(cmd.argument()), true);
break;
case LFUN_FILE_INSERT_PLAINTEXT:
// FIXME UNICODE
insertPlaintextFile(this, to_utf8(cmd.argument()), false);
break;
case LFUN_FONT_STATE:
cur.message(cur.currentState());
break;
case LFUN_BOOKMARK_SAVE:
saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
break;
case LFUN_LABEL_GOTO: {
docstring label = cmd.argument();
if (label.empty()) {
InsetRef * inset =
getInsetByCode<InsetRef>(cursor_,
InsetBase::REF_CODE);
if (inset) {
label = inset->getParam("reference");
// persistent=false: use temp_bookmark
saveBookmark(false);
}
}
if (!label.empty())
gotoLabel(label);
break;
}
case LFUN_PARAGRAPH_GOTO: {
int const id = convert<int>(to_utf8(cmd.argument()));
int i = 0;
for (Buffer * b = buffer_; i == 0 || b != buffer_; b = theBufferList().next(b)) {
ParIterator par = b->getParFromID(id);
if (par == b->par_iterator_end()) {
lyxerr[Debug::INFO]
<< "No matching paragraph found! ["
<< id << "]." << endl;
} else {
lyxerr[Debug::INFO]
<< "Paragraph " << par->id()
<< " found in buffer `"
<< b->fileName() << "'." << endl;
if (b == buffer_) {
// Set the cursor
setCursor(makeDocIterator(par, 0));
update();
switchKeyMap();
} else {
// Switch to other buffer view and resend cmd
theLyXFunc().dispatch(FuncRequest(
LFUN_BUFFER_SWITCH, b->fileName()));
theLyXFunc().dispatch(cmd);
}
break;
}
++i;
}
break;
}
case LFUN_OUTLINE_UP:
toc::outline(toc::Up, cursor_);
cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
updateLabels(*buffer_);
break;
case LFUN_OUTLINE_DOWN:
toc::outline(toc::Down, cursor_);
cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
updateLabels(*buffer_);
break;
case LFUN_OUTLINE_IN:
toc::outline(toc::In, cursor_);
updateLabels(*buffer_);
break;
case LFUN_OUTLINE_OUT:
toc::outline(toc::Out, cursor_);
updateLabels(*buffer_);
break;
case LFUN_NOTE_NEXT:
bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
break;
case LFUN_REFERENCE_NEXT: {
vector<InsetBase_code> tmp;
tmp.push_back(InsetBase::LABEL_CODE);
tmp.push_back(InsetBase::REF_CODE);
bv_funcs::gotoInset(this, tmp, true);
break;
}
case LFUN_CHANGES_TRACK:
buffer_->params().trackChanges = !buffer_->params().trackChanges;
break;
case LFUN_CHANGES_OUTPUT: {
buffer_->params().outputChanges = !buffer_->params().outputChanges;
break;
}
case LFUN_CHANGE_NEXT:
findNextChange(this);
break;
case LFUN_CHANGES_MERGE:
if (findNextChange(this))
showDialog("changes");
break;
case LFUN_ALL_CHANGES_ACCEPT: {
cursor_.reset(buffer_->inset());
#ifdef WITH_WARNINGS
#warning FIXME changes
#endif
while (findNextChange(this))
getLyXText()->acceptChange(cursor_);
update();
break;
}
case LFUN_ALL_CHANGES_REJECT: {
cursor_.reset(buffer_->inset());
#ifdef WITH_WARNINGS
#warning FIXME changes
#endif
while (findNextChange(this))
getLyXText()->rejectChange(cursor_);
break;
}
case LFUN_WORD_FIND:
find(this, cmd);
break;
case LFUN_WORD_REPLACE:
replace(this, cmd);
break;
case LFUN_MARK_OFF:
cur.clearSelection();
cur.resetAnchor();
cur.message(from_utf8(N_("Mark off")));
break;
case LFUN_MARK_ON:
cur.clearSelection();
cur.mark() = true;
cur.resetAnchor();
cur.message(from_utf8(N_("Mark on")));
break;
case LFUN_MARK_TOGGLE:
cur.clearSelection();
if (cur.mark()) {
cur.mark() = false;
cur.message(from_utf8(N_("Mark removed")));
} else {
cur.mark() = true;
cur.message(from_utf8(N_("Mark set")));
}
cur.resetAnchor();
break;
case LFUN_SCREEN_RECENTER:
center();
break;
case LFUN_BIBTEX_DATABASE_ADD: {
LCursor tmpcur = cursor_;
bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
InsetBase::BIBTEX_CODE);
if (inset) {
if (inset->addDatabase(to_utf8(cmd.argument())))
buffer_->updateBibfilesCache();
}
break;
}
case LFUN_BIBTEX_DATABASE_DEL: {
LCursor tmpcur = cursor_;
bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
InsetBase::BIBTEX_CODE);
if (inset) {
if (inset->delDatabase(to_utf8(cmd.argument())))
buffer_->updateBibfilesCache();
}
break;
}
case LFUN_WORDS_COUNT: {
DocIterator from, to;
if (cur.selection()) {
from = cur.selectionBegin();
to = cur.selectionEnd();
} else {
from = doc_iterator_begin(buffer_->inset());
to = doc_iterator_end(buffer_->inset());
}
int const count = countWords(from, to);
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);
}
break;
case LFUN_BUFFER_TOGGLE_COMPRESSION:
// turn compression on/off
buffer_->params().compressed = !buffer_->params().compressed;
break;
case LFUN_NEXT_INSET_TOGGLE: {
// this is the real function we want to invoke
FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
// if there is an inset at cursor, see whether it
// wants to toggle.
InsetBase * inset = cur.nextInset();
if (inset && inset->isActive()) {
LCursor tmpcur = cur;
tmpcur.pushLeft(*inset);
inset->dispatch(tmpcur, tmpcmd);
if (tmpcur.result().dispatched()) {
cur.dispatched();
}
}
// if it did not work, try the underlying inset.
if (!cur.result().dispatched())
cur.dispatch(tmpcmd);
if (cur.result().dispatched())
cur.clearSelection();
break;
}
default:
return false;
}
return true;
}
docstring const BufferView::requestSelection()
{
if (!buffer_)
return docstring();
LCursor & cur = cursor_;
if (!cur.selection()) {
xsel_cache_.set = false;
return docstring();
}
if (!xsel_cache_.set ||
cur.top() != xsel_cache_.cursor ||
cur.anchor_.top() != xsel_cache_.anchor)
{
xsel_cache_.cursor = cur.top();
xsel_cache_.anchor = cur.anchor_.top();
xsel_cache_.set = cur.selection();
return cur.selectionAsString(false);
}
return docstring();
}
void BufferView::clearSelection()
{
if (buffer_) {
cursor_.clearSelection();
xsel_cache_.set = false;
// The buffer did not really change, but this causes the
// redraw we need because we cleared the selection above.
buffer_->changed();
}
}
void BufferView::workAreaResize(int width, int height)
{
// Update from work area
width_ = width;
height_ = height;
// The complete text metrics will be redone.
text_metrics_.clear();
if (buffer_)
resize();
}
bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
{
//lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
// This is only called for mouse related events including
// LFUN_FILE_OPEN generated by drag-and-drop.
FuncRequest cmd = cmd0;
// E.g. Qt mouse press when no buffer
if (!buffer_)
return false;
LCursor cur(*this);
cur.push(buffer_->inset());
cur.selection() = cursor_.selection();
// Either the inset under the cursor or the
// surrounding LyXText will handle this event.
// Build temporary cursor.
cmd.y = min(max(cmd.y, -1), height_);
InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
//lyxerr << BOOST_CURRENT_FUNCTION
// << " * hit inset at tip: " << inset << endl;
//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();
// Try to dispatch to an non-editable inset near this position
// via the temp cursor. If the inset wishes to change the real
// cursor it has to do so explicitly by using
// cur.bv().cursor() = cur; (or similar)
if (inset) {
inset->dispatch(cur, cmd);
}
// Now dispatch to the temporary cursor. If the real cursor should
// be modified, the inset's dispatch has to do so explicitly.
if (!cur.result().dispatched())
cur.dispatch(cmd);
// Redraw if requested and necessary.
if (cur.result().dispatched() && cur.result().update())
return update(cur.result().update());
return false;
}
void BufferView::scroll(int /*lines*/)
{
// if (!buffer_)
// return;
//
// LyXText const * t = &buffer_->text();
// int const line_height = defaultRowHeight();
//
// // The new absolute coordinate
// int new_top_y = top_y() + lines * line_height;
//
// // Restrict to a valid value
// new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
// new_top_y = std::max(0, new_top_y);
//
// scrollDocView(new_top_y);
//
}
void BufferView::setCursorFromRow(int row)
{
int tmpid = -1;
int tmppos = -1;
buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
if (tmpid == -1)
buffer_->text().setCursor(cursor_, 0, 0);
else
buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
}
void BufferView::gotoLabel(docstring const & label)
{
for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
vector<docstring> labels;
it->getLabelList(*buffer_, labels);
if (std::find(labels.begin(), labels.end(), label) != labels.end()) {
setCursor(it);
update();
return;
}
}
}
LyXText * BufferView::getLyXText()
{
LyXText * text = cursor_.innerText();
BOOST_ASSERT(text);
return text;
}
LyXText const * BufferView::getLyXText() const
{
LyXText const * text = cursor_.innerText();
BOOST_ASSERT(text);
return text;
}
TextMetrics const & BufferView::textMetrics(LyXText const * t) const
{
return const_cast<BufferView *>(this)->textMetrics(t);
}
TextMetrics & BufferView::textMetrics(LyXText const * t)
{
TextMetricsCache::iterator tmc_it = text_metrics_.find(t);
if (tmc_it == text_metrics_.end()) {
tmc_it = text_metrics_.insert(
make_pair(t, TextMetrics(this, const_cast<LyXText *>(t)))).first;
}
return tmc_it->second;
}
ParagraphMetrics const & BufferView::parMetrics(LyXText const * t,
pit_type pit) const
{
return textMetrics(t).parMetrics(pit);
}
int BufferView::workHeight() const
{
return height_;
}
void BufferView::setCursor(DocIterator const & dit)
{
size_t const n = dit.depth();
for (size_t i = 0; i < n; ++i)
dit[i].inset().edit(cursor_, true);
cursor_.setCursor(dit);
cursor_.selection() = false;
}
bool BufferView::checkDepm(LCursor & cur, LCursor & old)
{
// Would be wrong to delete anything if we have a selection.
if (cur.selection())
return false;
bool need_anchor_change = false;
bool changed = cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
need_anchor_change);
if (need_anchor_change)
cur.resetAnchor();
if (!changed)
return false;
updateMetrics(false);
buffer_->changed();
return true;
}
bool BufferView::mouseSetCursor(LCursor & cur)
{
BOOST_ASSERT(&cur.bv() == this);
// Has the cursor just left the inset?
bool badcursor = false;
if (&cursor_.inset() != &cur.inset())
badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
// do the dEPM magic if needed
// FIXME: move this to InsetText::notifyCursorLeaves?
bool update = false;
if (!badcursor && cursor_.inTexted())
checkDepm(cur, cursor_);
// if the cursor was in an empty script inset and the new
// position is in the nucleus of the inset, notifyCursorLeaves
// will kill the script inset itself. So we check all the
// elements of the cursor to make sure that they are correct.
// For an example, see bug 2933:
// http://bugzilla.lyx.org/show_bug.cgi?id=2933
// The code below could maybe be moved to a DocIterator method.
//lyxerr << "cur before " << cur <<std::endl;
DocIterator dit(cur.inset());
dit.push_back(cur.bottom());
size_t i = 1;
while (i < cur.depth() && dit.nextInset() == &cur[i].inset()) {
dit.push_back(cur[i]);
++i;
}
//lyxerr << "5 cur after" << dit <<std::endl;
cursor_.setCursor(dit);
cursor_.clearSelection();
// remember new position.
cursor_.setTargetX();
finishUndo();
return update;
}
void BufferView::putSelectionAt(DocIterator const & cur,
int length, bool backwards)
{
cursor_.clearSelection();
setCursor(cur);
if (length) {
if (backwards) {
cursor_.pos() += length;
cursor_.setSelection(cursor_, -length);
} else
cursor_.setSelection(cursor_, length);
theSelection().haveSelection(cursor_.selection());
}
}
LCursor & BufferView::cursor()
{
return cursor_;
}
LCursor const & BufferView::cursor() const
{
return cursor_;
}
pit_type BufferView::anchor_ref() const
{
return anchor_ref_;
}
ViewMetricsInfo const & BufferView::viewMetricsInfo()
{
return metrics_info_;
}
// FIXME: We should split-up updateMetrics() for the singlepar case.
void BufferView::updateMetrics(bool singlepar)
{
LyXText & buftext = buffer_->text();
TextMetrics & tm = textMetrics(&buftext);
pit_type size = int(buftext.paragraphs().size());
if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
anchor_ref_ = int(buftext.paragraphs().size() - 1);
offset_ref_ = 0;
}
// If the paragraph metrics has changed, we can not
// use the singlepar optimisation.
if (singlepar
// In Single Paragraph mode, rebreak only
// the (main text, not inset!) paragraph containing the cursor.
// (if this paragraph contains insets etc., rebreaking will
// recursively descend)
&& tm.redoParagraph(cursor_.bottom().pit()))
singlepar = false;
pit_type const pit = anchor_ref_;
int pit1 = pit;
int pit2 = pit;
size_t const npit = buftext.paragraphs().size();
// Rebreak anchor paragraph.
if (!singlepar)
tm.redoParagraph(pit);
// Clear out the position cache in case of full screen redraw.
if (!singlepar)
coord_cache_.clear();
int y0 = tm.parMetrics(pit).ascent() - offset_ref_;
// Redo paragraphs above anchor if necessary.
int y1 = y0;
while (y1 > 0 && pit1 > 0) {
y1 -= tm.parMetrics(pit1).ascent();
--pit1;
if (!singlepar)
tm.redoParagraph(pit1);
y1 -= tm.parMetrics(pit1).descent();
}
// Take care of ascent of first line
y1 -= tm.parMetrics(pit1).ascent();
// Normalize anchor for next time
anchor_ref_ = pit1;
offset_ref_ = -y1;
// Grey at the beginning is ugly
if (pit1 == 0 && y1 > 0) {
y0 -= y1;
y1 = 0;
anchor_ref_ = 0;
}
// Redo paragraphs below the anchor if necessary.
int y2 = y0;
while (y2 < height_ && pit2 < int(npit) - 1) {
y2 += tm.parMetrics(pit2).descent();
++pit2;
if (!singlepar)
tm.redoParagraph(pit2);
y2 += tm.parMetrics(pit2).ascent();
}
// Take care of descent of last line
y2 += tm.parMetrics(pit2).descent();
// The coordinates of all these paragraphs are correct, cache them
int y = y1;
CoordCache::InnerParPosCache & parPos = coord_cache_.parPos()[&buftext];
for (pit_type pit = pit1; pit <= pit2; ++pit) {
ParagraphMetrics const & pm = tm.parMetrics(pit);
y += pm.ascent();
parPos[pit] = Point(0, y);
if (singlepar && pit == cursor_.bottom().pit()) {
// In Single Paragraph mode, collect here the
// y1 and y2 of the (one) paragraph the cursor is in
y1 = y - pm.ascent();
y2 = y + pm.descent();
}
y += pm.descent();
}
if (singlepar) {
// collect cursor paragraph iter bounds
pit1 = cursor_.bottom().pit();
pit2 = cursor_.bottom().pit();
}
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< " y1: " << y1
<< " y2: " << y2
<< " pit1: " << pit1
<< " pit2: " << pit2
<< " npit: " << npit
<< " singlepar: " << singlepar
<< "size: " << size
<< endl;
metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
if (lyxerr.debugging(Debug::WORKAREA)) {
lyxerr[Debug::WORKAREA] << "BufferView::updateMetrics" << endl;
coord_cache_.dump();
}
}
void BufferView::menuInsertLyXFile(string const & filenm)
{
BOOST_ASSERT(cursor_.inTexted());
string filename = filenm;
if (filename.empty()) {
// Launch a file browser
// FIXME UNICODE
string initpath = lyxrc.document_path;
if (buffer_) {
string const trypath = buffer_->filePath();
// If directory is writeable, use this as default.
if (isDirWriteable(FileName(trypath)))
initpath = trypath;
}
// FIXME UNICODE
FileDialog fileDlg(_("Select LyX document to insert"),
LFUN_FILE_INSERT,
make_pair(_("Documents|#o#O"), from_utf8(lyxrc.document_path)),
make_pair(_("Examples|#E#e"), from_utf8(addPath(package().system_support(), "examples"))));
FileDialog::Result result =
fileDlg.open(from_utf8(initpath),
FileFilterList(_("LyX Documents (*.lyx)")),
docstring());
if (result.first == FileDialog::Later)
return;
// FIXME UNICODE
filename = to_utf8(result.second);
// check selected filename
if (filename.empty()) {
// emit message signal.
message(_("Canceled."));
return;
}
}
// Get absolute path of file and add ".lyx"
// to the filename if necessary
filename = fileSearch(string(), filename, "lyx").absFilename();
docstring const disp_fn = makeDisplayPath(filename);
// emit message signal.
message(bformat(_("Inserting document %1$s..."), disp_fn));
docstring res;
Buffer buf("", false);
if (lyx::loadLyXFile(&buf, FileName(filename))) {
ErrorList & el = buffer_->errorList("Parse");
// Copy the inserted document error list into the current buffer one.
el = buf.errorList("Parse");
recordUndo(cursor_);
cap::pasteParagraphList(cursor_, buf.paragraphs(),
buf.params().textclass, el);
res = _("Document %1$s inserted.");
} else
res = _("Could not insert document %1$s");
// emit message signal.
message(bformat(res, disp_fn));
buffer_->errors("Parse");
resize();
}
} // namespace lyx
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