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lyx_mirror/src/BufferView.cpp
Richard Heck d4bca04616 Add a FIXME regarding remaining anchor issue. 
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@38390 a592a061-630c-0410-9148-cb99ea01b6c8
2011-04-15 02:26:22 +00:00

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/**
* \file BufferView.cpp
* 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 "BranchList.h"
#include "Buffer.h"
#include "buffer_funcs.h"
#include "BufferList.h"
#include "BufferParams.h"
#include "CoordCache.h"
#include "Cursor.h"
#include "CutAndPaste.h"
#include "DispatchResult.h"
#include "ErrorList.h"
#include "factory.h"
#include "FloatList.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
#include "Intl.h"
#include "InsetIterator.h"
#include "Language.h"
#include "LaTeXFeatures.h"
#include "LayoutFile.h"
#include "Lexer.h"
#include "LyX.h"
#include "LyXAction.h"
#include "lyxfind.h"
#include "Layout.h"
#include "LyXRC.h"
#include "MetricsInfo.h"
#include "Paragraph.h"
#include "ParagraphParameters.h"
#include "ParIterator.h"
#include "Session.h"
#include "Text.h"
#include "TextClass.h"
#include "TextMetrics.h"
#include "TexRow.h"
#include "TocBackend.h"
#include "VSpace.h"
#include "WordLangTuple.h"
#include "insets/InsetBibtex.h"
#include "insets/InsetCommand.h" // ChangeRefs
#include "insets/InsetExternal.h"
#include "insets/InsetGraphics.h"
#include "insets/InsetNote.h"
#include "insets/InsetRef.h"
#include "insets/InsetText.h"
#include "frontends/alert.h"
#include "frontends/Application.h"
#include "frontends/Delegates.h"
#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
#include "frontends/Selection.h"
#include "graphics/Previews.h"
#include "support/convert.h"
#include "support/debug.h"
#include "support/ExceptionMessage.h"
#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/Package.h"
#include "support/types.h"
#include <cerrno>
#include <fstream>
#include <functional>
#include <iterator>
#include <sstream>
#include <vector>
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace Alert = frontend::Alert;
namespace {
/// Return an inset of this class if it exists at the current cursor position
template <class T>
T * getInsetByCode(Cursor const & cur, InsetCode code)
{
DocIterator it = cur;
Inset * inset = it.nextInset();
if (inset && inset->lyxCode() == code)
return static_cast<T*>(inset);
return 0;
}
/// Note that comparing contents can only be used for InsetCommand
bool findNextInset(DocIterator & dit, vector<InsetCode> const & codes,
docstring const & contents)
{
DocIterator tmpdit = dit;
while (tmpdit) {
Inset const * inset = tmpdit.nextInset();
if (inset) {
bool const valid_code = std::find(codes.begin(), codes.end(),
inset->lyxCode()) != codes.end();
InsetCommand const * ic = inset->asInsetCommand();
bool const same_or_no_contents = contents.empty()
|| (ic && (ic->getFirstNonOptParam() == contents));
if (valid_code && same_or_no_contents) {
dit = tmpdit;
return true;
}
}
tmpdit.forwardInset();
}
return false;
}
/// Looks for next inset with one of the given codes.
/// Note that same_content can only be used for InsetCommand
bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
bool same_content)
{
docstring contents;
DocIterator tmpdit = dit;
tmpdit.forwardInset();
if (!tmpdit)
return false;
Inset const * inset = tmpdit.nextInset();
if (same_content && inset) {
InsetCommand const * ic = inset->asInsetCommand();
if (ic) {
bool const valid_code = std::find(codes.begin(), codes.end(),
ic->lyxCode()) != codes.end();
if (valid_code)
contents = ic->getFirstNonOptParam();
}
}
if (!findNextInset(tmpdit, codes, contents)) {
if (dit.depth() != 1 || dit.pit() != 0 || dit.pos() != 0) {
Inset * inset = &tmpdit.bottom().inset();
tmpdit = doc_iterator_begin(&inset->buffer(), inset);
if (!findNextInset(tmpdit, codes, contents))
return false;
} else {
return false;
}
}
dit = tmpdit;
return true;
}
/// Looks for next inset with the given code
void findInset(DocIterator & dit, InsetCode code, bool same_content)
{
findInset(dit, vector<InsetCode>(1, code), same_content);
}
/// Moves cursor to the next inset with one of the given codes.
void gotoInset(BufferView * bv, vector<InsetCode> const & codes,
bool same_content)
{
Cursor tmpcur = bv->cursor();
if (!findInset(tmpcur, codes, same_content)) {
bv->cursor().message(_("No more insets"));
return;
}
tmpcur.clearSelection();
bv->setCursor(tmpcur);
bv->showCursor();
}
/// Moves cursor to the next inset with given code.
void gotoInset(BufferView * bv, InsetCode code, bool same_content)
{
gotoInset(bv, vector<InsetCode>(1, code), same_content);
}
/// A map from a Text to the associated text metrics
typedef map<Text const *, TextMetrics> TextMetricsCache;
enum ScreenUpdateStrategy {
NoScreenUpdate,
SingleParUpdate,
FullScreenUpdate,
DecorationUpdate
};
} // anon namespace
/////////////////////////////////////////////////////////////////////
//
// BufferView
//
/////////////////////////////////////////////////////////////////////
struct BufferView::Private
{
Private(BufferView & bv): 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)
{}
///
ScrollbarParameters scrollbarParameters_;
///
ScreenUpdateStrategy update_strategy_;
///
CoordCache coord_cache_;
/// Estimated average par height for scrollbar.
int wh_;
/// this is used to handle XSelection events in the right manner.
struct {
CursorSlice cursor;
CursorSlice anchor;
bool set;
} xsel_cache_;
///
Cursor cursor_;
///
pit_type anchor_pit_;
///
int anchor_ypos_;
///
vector<int> par_height_;
///
DocIterator inlineCompletionPos_;
///
docstring inlineCompletion_;
///
size_t inlineCompletionUniqueChars_;
/// keyboard mapping object.
Intl intl_;
/// last visited inset.
/** kept to send setMouseHover(false).
* 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.
/** Not owned, so don't delete.
*/
frontend::GuiBufferViewDelegate * gui_;
/// Cache for Find Next
FuncRequest search_request_cache_;
///
map<string, Inset *> edited_insets_;
};
BufferView::BufferView(Buffer & buf)
: width_(0), height_(0), full_screen_(false), buffer_(buf),
d(new Private(*this))
{
d->xsel_cache_.set = false;
d->intl_.initKeyMapper(lyxrc.use_kbmap);
d->cursor_.setBuffer(&buf);
d->cursor_.push(buffer_.inset());
d->cursor_.resetAnchor();
d->cursor_.setCurrentFont();
buffer_.updatePreviews();
}
BufferView::~BufferView()
{
// current buffer is going to be switched-off, save cursor pos
// Ideally, the whole cursor stack should be saved, but session
// currently can only handle bottom (whole document) level pit and pos.
// 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.pit = d->cursor_.bottom().pit();
fp.pos = d->cursor_.bottom().pos();
theSession().lastFilePos().save(buffer_.fileName(), fp);
if (d->last_inset_)
d->last_inset_->setMouseHover(this, false);
delete d;
}
int BufferView::rightMargin() const
{
// The additional test for the case the outliner is opened.
if (!full_screen_ ||
!lyxrc.full_screen_limit ||
width_ < lyxrc.full_screen_width + 20)
return 10;
return (width_ - lyxrc.full_screen_width) / 2;
}
int BufferView::leftMargin() const
{
return rightMargin();
}
bool BufferView::isTopScreen() const
{
return d->scrollbarParameters_.position == d->scrollbarParameters_.min;
}
bool BufferView::isBottomScreen() const
{
return d->scrollbarParameters_.position == d->scrollbarParameters_.max;
}
Intl & BufferView::getIntl()
{
return d->intl_;
}
Intl const & BufferView::getIntl() const
{
return d->intl_;
}
CoordCache & BufferView::coordCache()
{
return d->coord_cache_;
}
CoordCache const & BufferView::coordCache() const
{
return d->coord_cache_;
}
Buffer & BufferView::buffer()
{
return buffer_;
}
Buffer const & BufferView::buffer() const
{
return buffer_;
}
bool BufferView::fitCursor()
{
if (cursorStatus(d->cursor_) == CUR_INSIDE) {
frontend::FontMetrics const & fm =
theFontMetrics(d->cursor_.getFont().fontInfo());
int const asc = fm.maxAscent();
int const des = fm.maxDescent();
Point const p = getPos(d->cursor_);
if (p.y_ - asc >= 0 && p.y_ + des < height_)
return false;
}
return true;
}
void BufferView::processUpdateFlags(Update::flags flags)
{
// This is close to a hot-path.
LYXERR(Debug::DEBUG, "BufferView::processUpdateFlags()"
<< "[fitcursor = " << (flags & Update::FitCursor)
<< ", forceupdate = " << (flags & Update::Force)
<< ", singlepar = " << (flags & Update::SinglePar)
<< "] buffer: " << &buffer_);
// FIXME Does this really need doing here? It's done in updateBuffer, and
// if the Buffer doesn't need updating, then do the macros?
buffer_.updateMacros();
// 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.
d->update_strategy_ = NoScreenUpdate;
return;
}
if (flags == Update::Decoration) {
d->update_strategy_ = DecorationUpdate;
buffer_.changed(false);
return;
}
if (flags == Update::FitCursor
|| flags == (Update::Decoration | Update::FitCursor)) {
// tell the frontend to update the screen if needed.
if (fitCursor()) {
showCursor();
return;
}
if (flags & Update::Decoration) {
d->update_strategy_ = DecorationUpdate;
buffer_.changed(false);
return;
}
// no screen update is needed.
d->update_strategy_ = NoScreenUpdate;
return;
}
bool const full_metrics = flags & Update::Force || !singleParUpdate();
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(false);
return;
}
// updateMetrics() does not update paragraph position
// This is done at draw() time. So we need a redraw!
buffer_.changed(false);
if (fitCursor()) {
// The cursor is off screen so ensure it is visible.
// refresh it:
showCursor();
}
updateHoveredInset();
}
void BufferView::updateScrollbar()
{
if (height_ == 0 && width_ == 0)
return;
// We prefer fixed size line scrolling.
d->scrollbarParameters_.single_step = defaultRowHeight();
// We prefer full screen page scrolling.
d->scrollbarParameters_.page_step = height_;
Text & t = buffer_.text();
TextMetrics & tm = d->text_metrics_[&t];
LYXERR(Debug::GUI, " Updating scrollbar: height: "
<< t.paragraphs().size()
<< " curr par: " << d->cursor_.bottom().pit()
<< " default height " << defaultRowHeight());
size_t const parsize = t.paragraphs().size();
if (d->par_height_.size() != parsize) {
d->par_height_.clear();
// 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() * 2);
}
// Look at paragraph heights on-screen
pair<pit_type, ParagraphMetrics const *> first = tm.first();
pair<pit_type, ParagraphMetrics const *> last = tm.last();
for (pit_type pit = first.first; pit <= last.first; ++pit) {
d->par_height_[pit] = tm.parMetrics(pit).height();
LYXERR(Debug::SCROLLING, "storing height for pit " << pit << " : "
<< d->par_height_[pit]);
}
int top_pos = first.second->position() - first.second->ascent();
int bottom_pos = last.second->position() + last.second->descent();
bool first_visible = first.first == 0 && top_pos >= 0;
bool last_visible = last.first + 1 == int(parsize) && bottom_pos <= height_;
if (first_visible && last_visible) {
d->scrollbarParameters_.min = 0;
d->scrollbarParameters_.max = 0;
return;
}
d->scrollbarParameters_.min = top_pos;
for (size_t i = 0; i != size_t(first.first); ++i)
d->scrollbarParameters_.min -= d->par_height_[i];
d->scrollbarParameters_.max = bottom_pos;
for (size_t i = last.first + 1; i != parsize; ++i)
d->scrollbarParameters_.max += d->par_height_[i];
d->scrollbarParameters_.position = 0;
// The reference is the top position so we remove one page.
if (lyxrc.scroll_below_document)
d->scrollbarParameters_.max -= minVisiblePart();
else
d->scrollbarParameters_.max -= d->scrollbarParameters_.page_step;
}
ScrollbarParameters const & BufferView::scrollbarParameters() const
{
return d->scrollbarParameters_;
}
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
{
//If there is a selection, return the containing inset menu
if (d->cursor_.selection())
return d->cursor_.inset().contextMenu(*this, x, y);
// 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);
return buffer_.inset().contextMenu(*this, x, y);
}
void BufferView::scrollDocView(int value, bool update)
{
int const offset = value - d->scrollbarParameters_.position;
// No scrolling at all? No need to redraw anything
if (offset == 0)
return;
// If the offset is less than 2 screen height, prefer to scroll instead.
if (abs(offset) <= 2 * height_) {
d->anchor_ypos_ -= offset;
buffer_.changed(true);
updateHoveredInset();
return;
}
// cut off at the top
if (value <= d->scrollbarParameters_.min) {
DocIterator dit = doc_iterator_begin(&buffer_);
showCursor(dit, false, update);
LYXERR(Debug::SCROLLING, "scroll to top");
return;
}
// cut off at the bottom
if (value >= d->scrollbarParameters_.max) {
DocIterator dit = doc_iterator_end(&buffer_);
dit.backwardPos();
showCursor(dit, false, update);
LYXERR(Debug::SCROLLING, "scroll to bottom");
return;
}
// find paragraph at target position
int par_pos = d->scrollbarParameters_.min;
pit_type i = 0;
for (; i != int(d->par_height_.size()); ++i) {
par_pos += d->par_height_[i];
if (par_pos >= value)
break;
}
if (par_pos < value) {
// It seems we didn't find the correct pit so stay on the safe side and
// scroll to bottom.
LYXERR0("scrolling position not found!");
scrollDocView(d->scrollbarParameters_.max, update);
return;
}
DocIterator dit = doc_iterator_begin(&buffer_);
dit.pit() = i;
LYXERR(Debug::SCROLLING, "value = " << value << " -> scroll to pit " << i);
showCursor(dit, false, update);
}
// FIXME: this method is not working well.
void BufferView::setCursorFromScrollbar()
{
TextMetrics & tm = d->text_metrics_[&buffer_.text()];
int const height = 2 * defaultRowHeight();
int const first = height;
int const last = height_ - height;
int newy = 0;
Cursor const & oldcur = d->cursor_;
switch (cursorStatus(oldcur)) {
case CUR_ABOVE:
newy = first;
break;
case CUR_BELOW:
newy = last;
break;
case CUR_INSIDE:
int const y = getPos(oldcur).y_;
newy = min(last, max(y, first));
if (y == newy)
return;
}
// We reset the cursor because cursorStatus() does not
// work when the cursor is within mathed.
Cursor cur(*this);
cur.reset();
tm.setCursorFromCoordinates(cur, 0, newy);
// update the bufferview cursor and notify insets
// FIXME: Care about the d->cursor_ flags to redraw if needed
Cursor old = d->cursor_;
mouseSetCursor(cur);
bool badcursor = notifyCursorLeavesOrEnters(old, d->cursor_);
if (badcursor)
d->cursor_.fixIfBroken();
}
Change const BufferView::getCurrentChange() const
{
if (!d->cursor_.selection())
return Change(Change::UNCHANGED);
DocIterator dit = d->cursor_.selectionBegin();
return dit.paragraph().lookupChange(dit.pos());
}
// this could be used elsewhere as well?
// FIXME: This does not work within mathed!
CursorStatus BufferView::cursorStatus(DocIterator const & dit) const
{
Point const p = getPos(dit);
if (p.y_ < 0)
return CUR_ABOVE;
if (p.y_ > workHeight())
return CUR_BELOW;
return CUR_INSIDE;
}
void BufferView::bookmarkEditPosition()
{
// Don't eat cpu time for each keystroke
if (d->cursor_.paragraph().id() == d->bookmark_edit_position_)
return;
saveBookmark(0);
d->bookmark_edit_position_ = d->cursor_.paragraph().id();
}
void BufferView::saveBookmark(unsigned int idx)
{
// tentatively save bookmark, id and pos will be used to
// acturately locate a bookmark in a 'live' lyx session.
// pit and pos will be updated with bottom level pit/pos
// when lyx exits.
if (!buffer_.isInternal()) {
theSession().bookmarks().save(
buffer_.fileName(),
d->cursor_.bottom().pit(),
d->cursor_.bottom().pos(),
d->cursor_.paragraph().id(),
d->cursor_.pos(),
idx
);
if (idx)
// emit message signal.
message(_("Save bookmark"));
}
}
bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
int top_id, pos_type top_pos)
{
bool success = false;
DocIterator dit;
d->cursor_.clearSelection();
// if a valid par_id is given, try it first
// This is the case for a 'live' bookmark when unique paragraph ID
// is used to track bookmarks.
if (top_id > 0) {
dit = buffer_.getParFromID(top_id);
if (!dit.atEnd()) {
dit.pos() = min(dit.paragraph().size(), top_pos);
// Some slices of the iterator may not be
// reachable (e.g. closed collapsable inset)
// so the dociterator may need to be
// shortened. Otherwise, setCursor may crash
// lyx when the cursor can not be set to these
// insets.
size_t const n = dit.depth();
for (size_t i = 0; i < n; ++i)
if (!dit[i].inset().editable()) {
dit.resize(i);
break;
}
success = true;
}
}
// if top_id == 0, or searching through top_id failed
// This is the case for a 'restored' bookmark when only bottom
// (document level) pit was saved. Because of this, bookmark
// restoration is inaccurate. If a bookmark was within an inset,
// it will be restored to the left of the outmost inset that contains
// the bookmark.
if (bottom_pit < int(buffer_.paragraphs().size())) {
dit = doc_iterator_begin(&buffer_);
dit.pit() = bottom_pit;
dit.pos() = min(bottom_pos, dit.paragraph().size());
success = true;
}
if (success) {
// Note: only bottom (document) level pit is set.
setCursor(dit);
// set the current font.
d->cursor_.setCurrentFont();
// 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 (fitCursor())
showCursor();
}
return success;
}
void BufferView::translateAndInsert(char_type c, Text * t, Cursor & cur)
{
if (lyxrc.rtl_support) {
if (d->cursor_.real_current_font.isRightToLeft()) {
if (d->intl_.keymap == Intl::PRIMARY)
d->intl_.keyMapSec();
} else {
if (d->intl_.keymap == Intl::SECONDARY)
d->intl_.keyMapPrim();
}
}
d->intl_.getTransManager().translateAndInsert(c, t, cur);
}
int BufferView::workWidth() const
{
return width_;
}
void BufferView::recenter()
{
showCursor(d->cursor_, true, true);
}
void BufferView::showCursor()
{
showCursor(d->cursor_, false, true);
}
void BufferView::showCursor(DocIterator const & dit,
bool recenter, bool update)
{
if (scrollToCursor(dit, recenter) && update) {
buffer_.changed(true);
updateHoveredInset();
}
}
void BufferView::scrollToCursor()
{
if (scrollToCursor(d->cursor_, false)) {
buffer_.changed(true);
updateHoveredInset();
}
}
bool BufferView::scrollToCursor(DocIterator const & dit, bool recenter)
{
// We are not properly started yet, delay until resizing is
// done.
if (height_ == 0)
return false;
LYXERR(Debug::SCROLLING, "recentering!");
CursorSlice const & bot = dit.bottom();
TextMetrics & tm = d->text_metrics_[bot.text()];
pos_type const max_pit = pos_type(bot.text()->paragraphs().size() - 1);
int bot_pit = bot.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)
tm.newParMetricsDown();
if (tm.contains(bot_pit)) {
ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
LASSERT(!pm.rows().empty(), /**/);
// FIXME: smooth scrolling doesn't work in mathed.
CursorSlice const & cs = dit.innerTextSlice();
int offset = coordOffset(dit).y_;
int ypos = pm.position() + offset;
Dimension const & row_dim =
pm.getRow(cs.pos(), dit.boundary()).dimension();
int scrolled = 0;
if (recenter)
scrolled = scroll(ypos - height_/2);
// If the top part of the row falls of the screen, we scroll
// up to align the top of the row with the top of the screen.
else if (ypos - row_dim.ascent() < 0)
scrolled = scrollUp(-ypos + row_dim.ascent());
// If the bottom of the row falls of the screen, we scroll down.
// However, we have to be careful not to scroll that much that
// the top falls of the screen.
else if (ypos + row_dim.descent() > height_) {
int ynew = height_ - row_dim.descent();
if (ynew < row_dim.ascent())
ynew = row_dim.ascent();
int const scroll = ypos - ynew;
scrolled = scrollDown(scroll);
}
// else, nothing to do, the cursor is already visible so we just return.
return scrolled != 0;
}
// fix inline completion position
if (d->inlineCompletionPos_.fixIfBroken())
d->inlineCompletionPos_ = DocIterator();
tm.redoParagraph(bot_pit);
ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
int offset = coordOffset(dit).y_;
d->anchor_pit_ = bot_pit;
CursorSlice const & cs = dit.innerTextSlice();
Dimension const & row_dim =
pm.getRow(cs.pos(), dit.boundary()).dimension();
if (recenter)
d->anchor_ypos_ = height_/2;
else if (d->anchor_pit_ == 0)
d->anchor_ypos_ = offset + pm.ascent();
else if (d->anchor_pit_ == max_pit)
d->anchor_ypos_ = height_ - offset - row_dim.descent();
else if (offset > height_)
d->anchor_ypos_ = height_ - offset - defaultRowHeight();
else
d->anchor_ypos_ = defaultRowHeight() * 2;
return true;
}
void BufferView::updateDocumentClass(DocumentClass const * const olddc)
{
message(_("Converting document to new document class..."));
StableDocIterator backcur(d->cursor_);
ErrorList & el = buffer_.errorList("Class Switch");
cap::switchBetweenClasses(
olddc, buffer_.params().documentClassPtr(),
static_cast<InsetText &>(buffer_.inset()), el);
setCursor(backcur.asDocIterator(&buffer_));
buffer_.errors("Class Switch");
}
/** Return the change status at cursor position, taking in account the
* status at each level of the document iterator (a table in a deleted
* footnote is deleted).
* When \param outer is true, the top slice is not looked at.
*/
static Change::Type lookupChangeType(DocIterator const & dit, bool outer = false)
{
size_t const depth = dit.depth() - (outer ? 1 : 0);
for (size_t i = 0 ; i < depth ; ++i) {
CursorSlice const & slice = dit[i];
if (!slice.inset().inMathed()
&& slice.pos() < slice.paragraph().size()) {
Change::Type const ch = slice.paragraph().lookupChange(slice.pos()).type;
if (ch != Change::UNCHANGED)
return ch;
}
}
return Change::UNCHANGED;
}
bool BufferView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
{
FuncCode const act = cmd.action();
// Can we use a readonly buffer?
if (buffer_.isReadonly()
&& !lyxaction.funcHasFlag(act, LyXAction::ReadOnly)
&& !lyxaction.funcHasFlag(act, LyXAction::NoBuffer)) {
flag.message(from_utf8(N_("Document is read-only")));
flag.setEnabled(false);
return true;
}
// Are we in a DELETED change-tracking region?
if (lookupChangeType(d->cursor_, true) == Change::DELETED
&& !lyxaction.funcHasFlag(act, LyXAction::ReadOnly)
&& !lyxaction.funcHasFlag(act, LyXAction::NoBuffer)) {
flag.message(from_utf8(N_("This portion of the document is deleted.")));
flag.setEnabled(false);
return true;
}
Cursor & cur = d->cursor_;
if (cur.getStatus(cmd, flag))
return true;
switch (act) {
// FIXME: This is a bit problematic because we don't check if this is
// a document BufferView or not for these LFUNs. We probably have to
// dispatch both to currentBufferView() and, if that fails,
// to documentBufferView(); same as we do now for current Buffer and
// document Buffer. Ideally those LFUN should go to Buffer as they
// operate on the full Buffer and the cursor is only needed either for
// an Undo record or to restore a cursor position. But we don't know
// how to do that inside Buffer of course.
case LFUN_BUFFER_PARAMS_APPLY:
case LFUN_LAYOUT_MODULES_CLEAR:
case LFUN_LAYOUT_MODULE_ADD:
case LFUN_LAYOUT_RELOAD:
case LFUN_TEXTCLASS_APPLY:
case LFUN_TEXTCLASS_LOAD:
flag.setEnabled(!buffer_.isReadonly());
break;
case LFUN_UNDO:
// We do not use the LyXAction flag for readonly because Undo sets the
// buffer clean/dirty status by itself.
flag.setEnabled(!buffer_.isReadonly() && buffer_.undo().hasUndoStack());
break;
case LFUN_REDO:
// We do not use the LyXAction flag for readonly because Redo sets the
// buffer clean/dirty status by itself.
flag.setEnabled(!buffer_.isReadonly() && buffer_.undo().hasRedoStack());
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 Text
flag.setEnabled(cur.inTexted());
break;
case LFUN_FONT_STATE:
case LFUN_LABEL_INSERT:
case LFUN_INFO_INSERT:
case LFUN_PARAGRAPH_GOTO:
case LFUN_NOTE_NEXT:
case LFUN_REFERENCE_NEXT:
case LFUN_WORD_FIND:
case LFUN_WORD_FIND_FORWARD:
case LFUN_WORD_FIND_BACKWARD:
case LFUN_WORD_FINDADV:
case LFUN_WORD_REPLACE:
case LFUN_MARK_OFF:
case LFUN_MARK_ON:
case LFUN_MARK_TOGGLE:
case LFUN_SCREEN_RECENTER:
case LFUN_SCREEN_SHOW_CURSOR:
case LFUN_BIBTEX_DATABASE_ADD:
case LFUN_BIBTEX_DATABASE_DEL:
case LFUN_STATISTICS:
case LFUN_BRANCH_ADD_INSERT:
case LFUN_KEYMAP_OFF:
case LFUN_KEYMAP_PRIMARY:
case LFUN_KEYMAP_SECONDARY:
case LFUN_KEYMAP_TOGGLE:
flag.setEnabled(true);
break;
case LFUN_LABEL_GOTO: {
flag.setEnabled(!cmd.argument().empty()
|| getInsetByCode<InsetRef>(cur, REF_CODE));
break;
}
case LFUN_CHANGES_TRACK:
flag.setEnabled(true);
flag.setOnOff(buffer_.params().trackChanges);
break;
case LFUN_CHANGES_OUTPUT:
flag.setEnabled(true);
flag.setOnOff(buffer_.params().outputChanges);
break;
case LFUN_CHANGES_MERGE:
case LFUN_CHANGE_NEXT:
case LFUN_CHANGE_PREVIOUS:
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.setEnabled(true);
break;
case LFUN_BUFFER_TOGGLE_COMPRESSION: {
flag.setOnOff(buffer_.params().compressed);
break;
}
case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC: {
flag.setOnOff(buffer_.params().output_sync);
break;
}
case LFUN_SCREEN_UP:
case LFUN_SCREEN_DOWN:
case LFUN_SCROLL:
case LFUN_SCREEN_UP_SELECT:
case LFUN_SCREEN_DOWN_SELECT:
case LFUN_INSET_FORALL:
flag.setEnabled(true);
break;
case LFUN_LAYOUT_TABULAR:
flag.setEnabled(cur.innerInsetOfType(TABULAR_CODE));
break;
case LFUN_LAYOUT:
flag.setEnabled(!cur.inset().forcePlainLayout(cur.idx()));
break;
case LFUN_LAYOUT_PARAGRAPH:
flag.setEnabled(cur.inset().allowParagraphCustomization(cur.idx()));
break;
case LFUN_DIALOG_SHOW_NEW_INSET:
// FIXME: this is wrong, but I do not understand the
// intent (JMarc)
if (cur.inset().lyxCode() == CAPTION_CODE)
return cur.inset().getStatus(cur, cmd, flag);
// FIXME we should consider passthru paragraphs too.
flag.setEnabled(!(cur.inTexted() && cur.paragraph().isPassThru()));
break;
case LFUN_CITATION_INSERT: {
FuncRequest fr(LFUN_INSET_INSERT, "citation");
// FIXME: This could turn in a recursive hell.
// Shouldn't we use Buffer::getStatus() instead?
flag.setEnabled(lyx::getStatus(fr).enabled());
break;
}
case LFUN_INSET_APPLY: {
string const name = cmd.getArg(0);
Inset * inset = editedInset(name);
if (inset) {
FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
if (!inset->getStatus(cur, fr, flag)) {
// Every inset is supposed to handle this
LASSERT(false, break);
}
} else {
FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
flag = lyx::getStatus(fr);
}
break;
}
default:
return false;
}
return true;
}
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;
}
void BufferView::editInset(string const & name, Inset * inset)
{
d->edited_insets_[name] = inset;
}
void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
{
//lyxerr << [ cmd = " << cmd << "]" << endl;
// Make sure that the cached BufferView is correct.
LYXERR(Debug::ACTION, " action[" << cmd.action() << ']'
<< " arg[" << to_utf8(cmd.argument()) << ']'
<< " x[" << cmd.x() << ']'
<< " y[" << cmd.y() << ']'
<< " button[" << cmd.button() << ']');
string const argument = to_utf8(cmd.argument());
Cursor & cur = d->cursor_;
// Don't dispatch function that does not apply to internal buffers.
if (buffer_.isInternal()
&& lyxaction.funcHasFlag(cmd.action(), LyXAction::NoInternal))
return;
// We'll set this back to false if need be.
bool dispatched = true;
buffer_.undo().beginUndoGroup();
FuncCode const act = cmd.action();
switch (act) {
case LFUN_BUFFER_PARAMS_APPLY: {
DocumentClass const * const oldClass = buffer_.params().documentClassPtr();
cur.recordUndoFullDocument();
istringstream ss(to_utf8(cmd.argument()));
Lexer lex;
lex.setStream(ss);
int const unknown_tokens = buffer_.readHeader(lex);
if (unknown_tokens != 0) {
LYXERR0("Warning in LFUN_BUFFER_PARAMS_APPLY!\n"
<< unknown_tokens << " unknown token"
<< (unknown_tokens == 1 ? "" : "s"));
}
updateDocumentClass(oldClass);
// We are most certainly here because of a change in the document
// It is then better to make sure that all dialogs are in sync with
// current document settings.
dr.screenUpdate(Update::Force | Update::FitCursor);
dr.forceBufferUpdate();
break;
}
case LFUN_LAYOUT_MODULES_CLEAR: {
DocumentClass const * const oldClass =
buffer_.params().documentClassPtr();
cur.recordUndoFullDocument();
buffer_.params().clearLayoutModules();
buffer_.params().makeDocumentClass();
updateDocumentClass(oldClass);
dr.screenUpdate(Update::Force);
dr.forceBufferUpdate();
break;
}
case LFUN_LAYOUT_MODULE_ADD: {
BufferParams const & params = buffer_.params();
if (!params.moduleCanBeAdded(argument)) {
LYXERR0("Module `" << argument <<
"' cannot be added due to failed requirements or "
"conflicts with installed modules.");
break;
}
DocumentClass const * const oldClass = params.documentClassPtr();
cur.recordUndoFullDocument();
buffer_.params().addLayoutModule(argument);
buffer_.params().makeDocumentClass();
updateDocumentClass(oldClass);
dr.screenUpdate(Update::Force);
dr.forceBufferUpdate();
break;
}
case LFUN_TEXTCLASS_APPLY: {
// since this shortcircuits, the second call is made only if
// the first fails
bool const success =
LayoutFileList::get().load(argument, buffer_.temppath()) ||
LayoutFileList::get().load(argument, buffer_.filePath());
if (!success) {
docstring s = bformat(_("The document class `%1$s' "
"could not be loaded."), from_utf8(argument));
frontend::Alert::error(_("Could not load class"), s);
break;
}
LayoutFile const * old_layout = buffer_.params().baseClass();
LayoutFile const * new_layout = &(LayoutFileList::get()[argument]);
if (old_layout == new_layout)
// nothing to do
break;
// Save the old, possibly modular, layout for use in conversion.
DocumentClass const * const oldDocClass =
buffer_.params().documentClassPtr();
cur.recordUndoFullDocument();
buffer_.params().setBaseClass(argument);
buffer_.params().makeDocumentClass();
updateDocumentClass(oldDocClass);
dr.screenUpdate(Update::Force);
dr.forceBufferUpdate();
break;
}
case LFUN_TEXTCLASS_LOAD: {
// since this shortcircuits, the second call is made only if
// the first fails
bool const success =
LayoutFileList::get().load(argument, buffer_.temppath()) ||
LayoutFileList::get().load(argument, buffer_.filePath());
if (!success) {
docstring s = bformat(_("The document class `%1$s' "
"could not be loaded."), from_utf8(argument));
frontend::Alert::error(_("Could not load class"), s);
}
break;
}
case LFUN_LAYOUT_RELOAD: {
DocumentClass const * const oldClass = buffer_.params().documentClassPtr();
LayoutFileIndex bc = buffer_.params().baseClassID();
LayoutFileList::get().reset(bc);
buffer_.params().setBaseClass(bc);
buffer_.params().makeDocumentClass();
updateDocumentClass(oldClass);
dr.screenUpdate(Update::Force);
dr.forceBufferUpdate();
break;
}
case LFUN_UNDO:
dr.setMessage(_("Undo"));
cur.clearSelection();
if (!cur.textUndo())
dr.setMessage(_("No further undo information"));
else
dr.screenUpdate(Update::Force | Update::FitCursor);
dr.forceBufferUpdate();
break;
case LFUN_REDO:
dr.setMessage(_("Redo"));
cur.clearSelection();
if (!cur.textRedo())
dr.setMessage(_("No further redo information"));
else
dr.screenUpdate(Update::Force | Update::FitCursor);
dr.forceBufferUpdate();
break;
case LFUN_FONT_STATE:
dr.setMessage(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>(cur, REF_CODE);
if (inset) {
label = inset->getParam("reference");
// persistent=false: use temp_bookmark
saveBookmark(0);
}
}
if (!label.empty()) {
gotoLabel(label);
// at the moment, this is redundant, since gotoLabel will
// eventually call LFUN_PARAGRAPH_GOTO, but it seems best
// to have it here.
dr.screenUpdate(Update::Force | Update::FitCursor);
}
break;
}
case LFUN_PARAGRAPH_GOTO: {
int const id = convert<int>(cmd.getArg(0));
int const pos = convert<int>(cmd.getArg(1));
int i = 0;
for (Buffer * b = &buffer_; i == 0 || b != &buffer_;
b = theBufferList().next(b)) {
DocIterator dit = b->getParFromID(id);
if (dit.atEnd()) {
LYXERR(Debug::INFO, "No matching paragraph found! [" << id << "].");
++i;
continue;
}
LYXERR(Debug::INFO, "Paragraph " << dit.paragraph().id()
<< " found in buffer `"
<< b->absFileName() << "'.");
if (b == &buffer_) {
// Set the cursor
dit.pos() = pos;
setCursor(dit);
dr.screenUpdate(Update::Force | Update::FitCursor);
} else {
// Switch to other buffer view and resend cmd
lyx::dispatch(FuncRequest(
LFUN_BUFFER_SWITCH, b->absFileName()));
lyx::dispatch(cmd);
}
break;
}
break;
}
case LFUN_NOTE_NEXT:
gotoInset(this, NOTE_CODE, false);
break;
case LFUN_REFERENCE_NEXT: {
vector<InsetCode> tmp;
tmp.push_back(LABEL_CODE);
tmp.push_back(REF_CODE);
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;
if (buffer_.params().outputChanges) {
bool dvipost = LaTeXFeatures::isAvailable("dvipost");
bool xcolorulem = LaTeXFeatures::isAvailable("ulem") &&
LaTeXFeatures::isAvailable("xcolor");
if (!dvipost && !xcolorulem) {
Alert::warning(_("Changes not shown in LaTeX output"),
_("Changes will not be highlighted in LaTeX output, "
"because neither dvipost nor xcolor/ulem are installed.\n"
"Please install these packages or redefine "
"\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
} else if (!xcolorulem) {
Alert::warning(_("Changes not shown in LaTeX output"),
_("Changes will not be highlighted in LaTeX output "
"when using pdflatex, because xcolor and ulem are not installed.\n"
"Please install both packages or redefine "
"\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
}
}
break;
case LFUN_CHANGE_NEXT:
findNextChange(this);
// 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);
// FIXME: Move this LFUN to Buffer so that we don't have to do this:
dr.screenUpdate(Update::Force | Update::FitCursor);
break;
case LFUN_CHANGES_MERGE:
if (findNextChange(this) || findPreviousChange(this)) {
dr.screenUpdate(Update::Force | Update::FitCursor);
dr.forceBufferUpdate();
showDialog("changes");
}
break;
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
buffer_.text().acceptOrRejectChanges(cur, Text::ACCEPT);
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:
// 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
buffer_.text().acceptOrRejectChanges(cur, Text::REJECT);
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: {
static docstring last_search;
docstring searched_string;
if (!cmd.argument().empty()) {
last_search = cmd.argument();
searched_string = cmd.argument();
} else {
searched_string = last_search;
}
if (searched_string.empty())
break;
bool const fw = act == LFUN_WORD_FIND_FORWARD;
docstring const data =
find2string(searched_string, true, false, fw);
bool found = lyxfind(this, FuncRequest(LFUN_WORD_FIND, data));
if (found)
dr.screenUpdate(Update::Force | Update::FitCursor);
break;
}
case LFUN_WORD_FIND: {
FuncRequest req = cmd;
if (cmd.argument().empty() && !d->search_request_cache_.argument().empty())
req = d->search_request_cache_;
if (req.argument().empty()) {
lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW, "findreplace"));
break;
}
if (lyxfind(this, req))
dr.screenUpdate(Update::Force | Update::FitCursor);
else
message(_("String not found!"));
d->search_request_cache_ = req;
break;
}
case LFUN_WORD_REPLACE: {
bool has_deleted = false;
if (cur.selection()) {
DocIterator beg = cur.selectionBegin();
DocIterator end = cur.selectionEnd();
if (beg.pit() == end.pit()) {
for (pos_type p = beg.pos() ; p < end.pos() ; ++p) {
if (!cur.inMathed() && cur.paragraph().isDeleted(p)) {
has_deleted = true;
break;
}
}
}
}
if (lyxreplace(this, cmd, has_deleted)) {
dr.forceBufferUpdate();
dr.screenUpdate(Update::Force | Update::FitCursor);
}
break;
}
case LFUN_WORD_FINDADV: {
FindAndReplaceOptions opt;
istringstream iss(to_utf8(cmd.argument()));
iss >> opt;
if (findAdv(this, opt)) {
dr.screenUpdate(Update::Force | Update::FitCursor);
cur.dispatched();
dispatched = true;
} else {
cur.undispatched();
dispatched = false;
}
break;
}
case LFUN_MARK_OFF:
cur.clearSelection();
dr.setMessage(from_utf8(N_("Mark off")));
break;
case LFUN_MARK_ON:
cur.clearSelection();
cur.setMark(true);
dr.setMessage(from_utf8(N_("Mark on")));
break;
case LFUN_MARK_TOGGLE:
cur.setSelection(false);
if (cur.mark()) {
cur.setMark(false);
dr.setMessage(from_utf8(N_("Mark removed")));
} else {
cur.setMark(true);
dr.setMessage(from_utf8(N_("Mark set")));
}
cur.resetAnchor();
break;
case LFUN_SCREEN_SHOW_CURSOR:
showCursor();
break;
case LFUN_SCREEN_RECENTER:
recenter();
break;
case LFUN_BIBTEX_DATABASE_ADD: {
Cursor tmpcur = cur;
findInset(tmpcur, BIBTEX_CODE, false);
InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
BIBTEX_CODE);
if (inset) {
if (inset->addDatabase(cmd.argument())) {
buffer_.invalidateBibfileCache();
dr.forceBufferUpdate();
}
}
break;
}
case LFUN_BIBTEX_DATABASE_DEL: {
Cursor tmpcur = cur;
findInset(tmpcur, BIBTEX_CODE, false);
InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
BIBTEX_CODE);
if (inset) {
if (inset->delDatabase(cmd.argument())) {
buffer_.invalidateBibfileCache();
dr.forceBufferUpdate();
}
}
break;
}
case LFUN_STATISTICS: {
DocIterator from, to;
if (cur.selection()) {
from = cur.selectionBegin();
to = cur.selectionEnd();
} else {
from = doc_iterator_begin(&buffer_);
to = doc_iterator_end(&buffer_);
}
int const words = countWords(from, to);
int const chars = countChars(from, to, false);
int const chars_blanks = countChars(from, to, true);
docstring message;
if (cur.selection())
message = _("Statistics for the selection:");
else
message = _("Statistics for the document:");
message += "\n\n";
if (words != 1)
message += bformat(_("%1$d words"), words);
else
message += _("One word");
message += "\n";
if (chars_blanks != 1)
message += bformat(_("%1$d characters (including blanks)"),
chars_blanks);
else
message += _("One character (including blanks)");
message += "\n";
if (chars != 1)
message += bformat(_("%1$d characters (excluding blanks)"),
chars);
else
message += _("One character (excluding blanks)");
Alert::information(_("Statistics"), message);
}
break;
case LFUN_BUFFER_TOGGLE_COMPRESSION:
// turn compression on/off
buffer_.params().compressed = !buffer_.params().compressed;
break;
case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC:
buffer_.params().output_sync = !buffer_.params().output_sync;
break;
case LFUN_SCREEN_UP:
case LFUN_SCREEN_DOWN: {
Point p = getPos(cur);
// This code has been commented out to enable to scroll down a
// document, even if there are large insets in it (see bug #5465).
/*if (p.y_ < 0 || p.y_ > height_) {
// The cursor is off-screen so recenter before proceeding.
showCursor();
p = getPos(cur);
}*/
int const scrolled = scroll(act == LFUN_SCREEN_UP
? -height_ : height_);
if (act == LFUN_SCREEN_UP && scrolled > -height_)
p = Point(0, 0);
if (act == LFUN_SCREEN_DOWN && scrolled < height_)
p = Point(width_, height_);
Cursor old = cur;
bool const in_texted = cur.inTexted();
cur.reset();
buffer_.changed(true);
updateHoveredInset();
d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_,
true, act == LFUN_SCREEN_UP);
cur.resetAnchor();
//FIXME: what to do with cur.x_target()?
bool update = in_texted && cur.bv().checkDepm(cur, old);
cur.finishUndo();
if (update) {
dr.screenUpdate(Update::Force | Update::FitCursor);
dr.forceBufferUpdate();
}
break;
}
case LFUN_SCROLL:
lfunScroll(cmd);
dr.forceBufferUpdate();
break;
case LFUN_SCREEN_UP_SELECT: {
cur.selHandle(true);
if (isTopScreen()) {
lyx::dispatch(FuncRequest(LFUN_BUFFER_BEGIN_SELECT));
cur.finishUndo();
break;
}
int y = getPos(cur).y_;
int const ymin = y - height_ + defaultRowHeight();
while (y > ymin && cur.up())
y = getPos(cur).y_;
cur.finishUndo();
dr.screenUpdate(Update::SinglePar | Update::FitCursor);
break;
}
case LFUN_SCREEN_DOWN_SELECT: {
cur.selHandle(true);
if (isBottomScreen()) {
lyx::dispatch(FuncRequest(LFUN_BUFFER_END_SELECT));
cur.finishUndo();
break;
}
int y = getPos(cur).y_;
int const ymax = y + height_ - defaultRowHeight();
while (y < ymax && cur.down())
y = getPos(cur).y_;
cur.finishUndo();
dr.screenUpdate(Update::SinglePar | Update::FitCursor);
break;
}
// This would be in Buffer class if only Cursor did not
// require a bufferview
case LFUN_INSET_FORALL: {
docstring const name = from_utf8(cmd.getArg(0));
string const commandstr = cmd.getLongArg(1);
FuncRequest const fr = lyxaction.lookupFunc(commandstr);
// an arbitrary number to limit number of iterations
const int max_iter = 10000;
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 * ins = cur.nextInset();
if (!ins)
break;
docstring insname = ins->layoutName();
while (!insname.empty()) {
if (insname == name || name == from_utf8("*")) {
cur.recordUndo();
lyx::dispatch(fr, dr);
++iterations;
break;
}
size_t const i = insname.rfind(':');
if (i == string::npos)
break;
insname = insname.substr(0, i);
}
cur.forwardInset();
}
cur.endUndoGroup();
cur = savecur;
cur.fixIfBroken();
dr.screenUpdate(Update::Force);
dr.forceBufferUpdate();
if (iterations >= max_iter) {
dr.setError(true);
dr.setMessage(bformat(_("`inset-forall' interrupted because number of actions is larger than %1$d"), max_iter));
} else
dr.setMessage(bformat(_("Applied \"%1$s\" to %2$d insets"), from_utf8(commandstr), iterations));
break;
}
case LFUN_BRANCH_ADD_INSERT: {
docstring branch_name = from_utf8(cmd.getArg(0));
if (branch_name.empty())
if (!Alert::askForText(branch_name, _("Branch name")) ||
branch_name.empty())
break;
DispatchResult drtmp;
buffer_.dispatch(FuncRequest(LFUN_BRANCH_ADD, branch_name), drtmp);
if (drtmp.error()) {
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));
}
break;
}
case LFUN_KEYMAP_OFF:
getIntl().keyMapOn(false);
break;
case LFUN_KEYMAP_PRIMARY:
getIntl().keyMapPrim();
break;
case LFUN_KEYMAP_SECONDARY:
getIntl().keyMapSec();
break;
case LFUN_KEYMAP_TOGGLE:
getIntl().toggleKeyMap();
break;
case LFUN_DIALOG_SHOW_NEW_INSET: {
string const name = cmd.getArg(0);
string data = trim(to_utf8(cmd.argument()).substr(name.size()));
if (decodeInsetParam(name, data, buffer_))
lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW, name + " " + data));
else
lyxerr << "Inset type '" << name <<
"' not recognized in LFUN_DIALOG_SHOW_NEW_INSET" << endl;
break;
}
case LFUN_CITATION_INSERT: {
if (argument.empty()) {
lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW_NEW_INSET, "citation"));
break;
}
// we can have one optional argument, delimited by '|'
// citation-insert <key>|<text_before>
// this should be enhanced to also support text_after
// and citation style
string arg = argument;
string opt1;
if (contains(argument, "|")) {
arg = token(argument, '|', 0);
opt1 = token(argument, '|', 1);
}
InsetCommandParams icp(CITE_CODE);
icp["key"] = from_utf8(arg);
if (!opt1.empty())
icp["before"] = from_utf8(opt1);
string icstr = InsetCommand::params2string(icp);
FuncRequest fr(LFUN_INSET_INSERT, icstr);
lyx::dispatch(fr);
break;
}
case LFUN_INSET_APPLY: {
string const name = cmd.getArg(0);
Inset * inset = editedInset(name);
if (!inset) {
FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
lyx::dispatch(fr);
break;
}
// put cursor in front of inset.
if (!setCursorFromInset(inset)) {
LASSERT(false, break);
}
cur.recordUndo();
FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
inset->dispatch(cur, fr);
dr.screenUpdate(cur.result().screenUpdate());
if (cur.result().needBufferUpdate())
dr.forceBufferUpdate();
break;
}
default:
// OK, so try the Buffer itself...
buffer_.dispatch(cmd, dr);
dispatched = dr.dispatched();
break;
}
buffer_.undo().endUndoGroup();
dr.dispatched(dispatched);
}
docstring const BufferView::requestSelection()
{
Cursor & cur = d->cursor_;
LYXERR(Debug::SELECTION, "requestSelection: cur.selection: " << cur.selection());
if (!cur.selection()) {
d->xsel_cache_.set = false;
return docstring();
}
LYXERR(Debug::SELECTION, "requestSelection: xsel_cache.set: " << d->xsel_cache_.set);
if (!d->xsel_cache_.set ||
cur.top() != d->xsel_cache_.cursor ||
cur.realAnchor().top() != d->xsel_cache_.anchor)
{
d->xsel_cache_.cursor = cur.top();
d->xsel_cache_.anchor = cur.realAnchor().top();
d->xsel_cache_.set = cur.selection();
return cur.selectionAsString(false);
}
return docstring();
}
void BufferView::clearSelection()
{
d->cursor_.clearSelection();
// Clear the selection buffer. Otherwise a subsequent
// middle-mouse-button paste would use the selection buffer,
// not the more current external selection.
cap::clearSelection();
d->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(false);
}
void BufferView::resize(int width, int height)
{
// Update from work area
width_ = width;
height_ = height;
// Clear the paragraph height cache.
d->par_height_.clear();
// Redo the metrics.
updateMetrics();
}
Inset const * BufferView::getCoveringInset(Text const & text,
int x, int y) const
{
TextMetrics & tm = d->text_metrics_[&text];
Inset * inset = tm.checkInsetHit(x, y);
if (!inset)
return 0;
if (!inset->descendable(*this))
// No need to go further down if the inset is not
// descendable.
return inset;
size_t cell_number = inset->nargs();
// Check all the inner cell.
for (size_t i = 0; i != cell_number; ++i) {
Text const * inner_text = inset->getText(i);
if (inner_text) {
// Try deeper.
Inset const * inset_deeper =
getCoveringInset(*inner_text, x, y);
if (inset_deeper)
return inset_deeper;
}
}
return inset;
}
void BufferView::updateHoveredInset() const
{
// Get inset under mouse, if there is one.
int const x = d->mouse_position_cache_.x_;
int const y = d->mouse_position_cache_.y_;
Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
d->clickable_inset_ = covering_inset && covering_inset->clickable(x, y);
if (covering_inset == d->last_inset_)
// Same inset, no need to do anything...
return;
bool need_redraw = false;
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;
}
if (covering_inset && covering_inset->setMouseHover(this, true)) {
need_redraw = true;
// Only the insets that accept the hover state, do
// clear the last_inset_, so only set the last_inset_
// member if the hovered setting is accepted.
d->last_inset_ = covering_inset;
}
if (need_redraw) {
LYXERR(Debug::PAINTING, "Mouse hover detected at: ("
<< d->mouse_position_cache_.x_ << ", "
<< d->mouse_position_cache_.y_ << ")");
d->update_strategy_ = DecorationUpdate;
// This event (moving without mouse click) is not passed further.
// This should be changed if it is further utilized.
buffer_.changed(false);
}
}
void BufferView::clearLastInset(Inset * inset) const
{
if (d->last_inset_ != inset) {
LYXERR0("Wrong last_inset!");
LASSERT(false, /**/);
}
d->last_inset_ = 0;
}
void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
{
//lyxerr << "[ cmd0 " << cmd0 << "]" << endl;
// This is only called for mouse related events including
// LFUN_FILE_OPEN generated by drag-and-drop.
FuncRequest cmd = cmd0;
Cursor old = cursor();
Cursor cur(*this);
cur.push(buffer_.inset());
cur.setSelection(d->cursor_.selection());
// Either the inset under the cursor or the
// surrounding Text will handle this event.
// make sure we stay within the screen...
cmd.set_y(min(max(cmd.y(), -1), height_));
d->mouse_position_cache_.x_ = cmd.x();
d->mouse_position_cache_.y_ = cmd.y();
if (cmd.action() == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
updateHoveredInset();
return;
}
// Build temporary cursor.
Inset * inset = d->text_metrics_[&buffer_.text()].editXY(cur, cmd.x(), cmd.y());
// Put anchor at the same position.
cur.resetAnchor();
cur.beginUndoGroup();
// 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 (!inset || !cur.result().dispatched())
cur.dispatch(cmd);
cur.endUndoGroup();
// Notify left insets
if (cur != old) {
old.fixIfBroken();
bool badcursor = notifyCursorLeavesOrEnters(old, cur);
if (badcursor)
cursor().fixIfBroken();
}
// Do we have a selection?
theSelection().haveSelection(cursor().selection());
// If the command has been dispatched,
if (cur.result().dispatched() || cur.result().screenUpdate())
processUpdateFlags(cur.result().screenUpdate());
}
void BufferView::lfunScroll(FuncRequest const & cmd)
{
string const scroll_type = cmd.getArg(0);
int scroll_step = 0;
if (scroll_type == "line")
scroll_step = d->scrollbarParameters_.single_step;
else if (scroll_type == "page")
scroll_step = d->scrollbarParameters_.page_step;
else
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);
}
buffer_.changed(true);
updateHoveredInset();
}
int BufferView::minVisiblePart()
{
return 2 * defaultRowHeight();
}
int BufferView::scroll(int y)
{
if (y > 0)
return scrollDown(y);
if (y < 0)
return scrollUp(-y);
return 0;
}
int BufferView::scrollDown(int offset)
{
Text * text = &buffer_.text();
TextMetrics & tm = d->text_metrics_[text];
int const ymax = height_ + offset;
while (true) {
pair<pit_type, ParagraphMetrics const *> last = tm.last();
int bottom_pos = last.second->position() + last.second->descent();
if (lyxrc.scroll_below_document)
bottom_pos += height_ - minVisiblePart();
if (last.first + 1 == int(text->paragraphs().size())) {
if (bottom_pos <= height_)
return 0;
offset = min(offset, bottom_pos - height_);
break;
}
if (bottom_pos > ymax)
break;
tm.newParMetricsDown();
}
d->anchor_ypos_ -= offset;
return -offset;
}
int BufferView::scrollUp(int offset)
{
Text * text = &buffer_.text();
TextMetrics & tm = d->text_metrics_[text];
int ymin = - offset;
while (true) {
pair<pit_type, ParagraphMetrics const *> first = tm.first();
int top_pos = first.second->position() - first.second->ascent();
if (first.first == 0) {
if (top_pos >= 0)
return 0;
offset = min(offset, - top_pos);
break;
}
if (top_pos < ymin)
break;
tm.newParMetricsUp();
}
d->anchor_ypos_ += offset;
return offset;
}
void BufferView::setCursorFromRow(int row)
{
int tmpid = -1;
int tmppos = -1;
buffer_.texrow().getIdFromRow(row, tmpid, tmppos);
d->cursor_.reset();
if (tmpid == -1)
buffer_.text().setCursor(d->cursor_, 0, 0);
else
buffer_.text().setCursor(d->cursor_, buffer_.getParFromID(tmpid).pit(), tmppos);
d->cursor_.setSelection(false);
d->cursor_.resetAnchor();
recenter();
}
bool BufferView::setCursorFromInset(Inset const * inset)
{
// are we already there?
if (cursor().nextInset() == inset)
return true;
// Inset is not at cursor position. Find it in the document.
Cursor cur(*this);
cur.reset();
while (cur && cur.nextInset() != inset)
cur.forwardInset();
if (cur) {
setCursor(cur);
return true;
}
return false;
}
void BufferView::gotoLabel(docstring const & label)
{
ListOfBuffers bufs = buffer().allRelatives();
ListOfBuffers::iterator it = bufs.begin();
for (; it != bufs.end(); ++it) {
Buffer const * buf = *it;
// find label
Toc & toc = buf->tocBackend().toc("label");
TocIterator toc_it = toc.begin();
TocIterator end = toc.end();
for (; toc_it != end; ++toc_it) {
if (label == toc_it->str()) {
lyx::dispatch(toc_it->action());
return;
}
}
}
}
TextMetrics const & BufferView::textMetrics(Text const * t) const
{
return const_cast<BufferView *>(this)->textMetrics(t);
}
TextMetrics & BufferView::textMetrics(Text const * t)
{
LASSERT(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;
}
return tmc_it->second;
}
ParagraphMetrics const & BufferView::parMetrics(Text const * t,
pit_type pit) const
{
return textMetrics(t).parMetrics(pit);
}
int BufferView::workHeight() const
{
return height_;
}
void BufferView::setCursor(DocIterator const & dit)
{
d->cursor_.reset();
size_t const n = dit.depth();
for (size_t i = 0; i < n; ++i)
dit[i].inset().edit(d->cursor_, true);
d->cursor_.setCursor(dit);
d->cursor_.setSelection(false);
// FIXME
// It seems on general grounds as if this is probably needed, but
// it is not yet clear.
// See bug #7394 and r38388.
// d->cursor.resetAnchor();
}
bool BufferView::checkDepm(Cursor & cur, Cursor & old)
{
// Would be wrong to delete anything if we have a selection.
if (cur.selection())
return false;
bool need_anchor_change = false;
bool changed = d->cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
need_anchor_change);
if (need_anchor_change)
cur.resetAnchor();
if (!changed)
return false;
d->cursor_ = cur;
cur.forceBufferUpdate();
buffer_.changed(true);
return true;
}
bool BufferView::mouseSetCursor(Cursor & cur, bool select)
{
LASSERT(&cur.bv() == this, /**/);
if (!select)
// this event will clear selection so we save selection for
// persistent selection
cap::saveSelection(cursor());
d->cursor_.macroModeClose();
// Has the cursor just left the inset?
bool const leftinset = (&d->cursor_.inset() != &cur.inset());
if (leftinset)
d->cursor_.fixIfBroken();
// FIXME: shift-mouse selection doesn't work well across insets.
bool const do_selection =
select && &d->cursor_.normalAnchor().inset() == &cur.inset();
// do the dEPM magic if needed
// FIXME: (1) move this to InsetText::notifyCursorLeaves?
// FIXME: (2) if we had a working InsetText::notifyCursorLeaves,
// the leftinset bool would not be necessary (badcursor instead).
bool update = leftinset;
if (!do_selection && d->cursor_.inTexted())
update |= checkDepm(cur, d->cursor_);
if (!do_selection)
d->cursor_.resetAnchor();
d->cursor_.setCursor(cur);
d->cursor_.boundary(cur.boundary());
if (do_selection)
d->cursor_.setSelection();
else
d->cursor_.clearSelection();
d->cursor_.finishUndo();
d->cursor_.setCurrentFont();
if (update)
cur.forceBufferUpdate();
return update;
}
void BufferView::putSelectionAt(DocIterator const & cur,
int length, bool backwards)
{
d->cursor_.clearSelection();
setCursor(cur);
if (length) {
if (backwards) {
d->cursor_.pos() += length;
d->cursor_.setSelection(d->cursor_, -length);
} else
d->cursor_.setSelection(d->cursor_, length);
}
}
bool BufferView::selectIfEmpty(DocIterator & cur)
{
if (!cur.paragraph().empty())
return false;
pit_type const beg_pit = cur.pit();
if (beg_pit > 0) {
// The paragraph associated to this item isn't
// the first one, so it can be selected
cur.backwardPos();
} else {
// We have to resort to select the space between the
// end of this item and the begin of the next one
cur.forwardPos();
}
if (cur.empty()) {
// If it is the only item in the document,
// nothing can be selected
return false;
}
pit_type const end_pit = cur.pit();
pos_type const end_pos = cur.pos();
d->cursor_.clearSelection();
d->cursor_.reset();
d->cursor_.setCursor(cur);
d->cursor_.pit() = beg_pit;
d->cursor_.pos() = 0;
d->cursor_.setSelection(false);
d->cursor_.resetAnchor();
d->cursor_.pit() = end_pit;
d->cursor_.pos() = end_pos;
d->cursor_.setSelection();
return true;
}
Cursor & BufferView::cursor()
{
return d->cursor_;
}
Cursor const & BufferView::cursor() const
{
return d->cursor_;
}
pit_type BufferView::anchor_ref() const
{
return d->anchor_pit_;
}
bool BufferView::singleParUpdate()
{
Text & buftext = buffer_.text();
pit_type const bottom_pit = d->cursor_.bottom().pit();
TextMetrics & tm = textMetrics(&buftext);
int old_height = tm.parMetrics(bottom_pit).height();
// make sure inline completion pointer is ok
if (d->inlineCompletionPos_.fixIfBroken())
d->inlineCompletionPos_ = DocIterator();
// 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(bottom_pit);
ParagraphMetrics const & pm = tm.parMetrics(bottom_pit);
if (pm.height() != old_height)
// Paragraph height has changed so we cannot proceed to
// the singlePar optimisation.
return false;
d->update_strategy_ = SingleParUpdate;
LYXERR(Debug::PAINTING, "\ny1: " << pm.position() - pm.ascent()
<< " y2: " << pm.position() + pm.descent()
<< " pit: " << bottom_pit
<< " singlepar: 1");
return true;
}
void BufferView::updateMetrics()
{
if (height_ == 0 || width_ == 0)
return;
Text & buftext = buffer_.text();
pit_type const npit = int(buftext.paragraphs().size());
// Clear out the position cache in case of full screen redraw,
d->coord_cache_.clear();
// Clear out paragraph metrics to avoid having invalid metrics
// in the cache from paragraphs not relayouted below
// The complete text metrics will be redone.
d->text_metrics_.clear();
TextMetrics & tm = textMetrics(&buftext);
// make sure inline completion pointer is ok
if (d->inlineCompletionPos_.fixIfBroken())
d->inlineCompletionPos_ = DocIterator();
if (d->anchor_pit_ >= npit)
// The anchor pit must have been deleted...
d->anchor_pit_ = npit - 1;
// Rebreak anchor paragraph.
tm.redoParagraph(d->anchor_pit_);
ParagraphMetrics & anchor_pm = tm.par_metrics_[d->anchor_pit_];
// position anchor
if (d->anchor_pit_ == 0) {
int scrollRange = d->scrollbarParameters_.max - d->scrollbarParameters_.min;
// Complete buffer visible? Then it's easy.
if (scrollRange == 0)
d->anchor_ypos_ = anchor_pm.ascent();
// FIXME: Some clever handling needed to show
// the _first_ paragraph up to the top if the cursor is
// in the first line.
}
anchor_pm.setPosition(d->anchor_ypos_);
LYXERR(Debug::PAINTING, "metrics: "
<< " anchor pit = " << d->anchor_pit_
<< " anchor ypos = " << d->anchor_ypos_);
// Redo paragraphs above anchor if necessary.
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) {
tm.redoParagraph(pit1);
ParagraphMetrics & pm = tm.par_metrics_[pit1];
y1 -= pm.descent();
// Save the paragraph position in the cache.
pm.setPosition(y1);
y1 -= pm.ascent();
}
// Redo paragraphs below the anchor if necessary.
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) {
tm.redoParagraph(pit2);
ParagraphMetrics & pm = tm.par_metrics_[pit2];
y2 += pm.ascent();
// Save the paragraph position in the cache.
pm.setPosition(y2);
y2 += pm.descent();
}
LYXERR(Debug::PAINTING, "Metrics: "
<< " anchor pit = " << d->anchor_pit_
<< " anchor ypos = " << d->anchor_ypos_
<< " y1 = " << y1
<< " y2 = " << y2
<< " pit1 = " << pit1
<< " pit2 = " << pit2);
d->update_strategy_ = FullScreenUpdate;
if (lyxerr.debugging(Debug::WORKAREA)) {
LYXERR(Debug::WORKAREA, "BufferView::updateMetrics");
d->coord_cache_.dump();
}
}
void BufferView::insertLyXFile(FileName const & fname)
{
LASSERT(d->cursor_.inTexted(), /**/);
// Get absolute path of file and add ".lyx"
// to the filename if necessary
FileName filename = fileSearch(string(), fname.absFileName(), "lyx");
docstring const disp_fn = makeDisplayPath(filename.absFileName());
// emit message signal.
message(bformat(_("Inserting document %1$s..."), disp_fn));
docstring res;
Buffer buf(filename.absFileName(), false);
if (buf.loadLyXFile() == Buffer::ReadSuccess) {
ErrorList & el = buffer_.errorList("Parse");
// Copy the inserted document error list into the current buffer one.
el = buf.errorList("Parse");
buffer_.undo().recordUndo(d->cursor_);
cap::pasteParagraphList(d->cursor_, buf.paragraphs(),
buf.params().documentClassPtr(), el);
res = _("Document %1$s inserted.");
} else {
res = _("Could not insert document %1$s");
}
buffer_.changed(true);
// emit message signal.
message(bformat(res, disp_fn));
}
Point BufferView::coordOffset(DocIterator const & dit) const
{
int x = 0;
int y = 0;
int lastw = 0;
// Addup contribution of nested insets, from inside to outside,
// keeping the outer paragraph for a special handling below
for (size_t i = dit.depth() - 1; i >= 1; --i) {
CursorSlice const & sl = dit[i];
int xx = 0;
int yy = 0;
// get relative position inside sl.inset()
sl.inset().cursorPos(*this, sl, dit.boundary() && (i + 1 == dit.depth()), xx, yy);
// Make relative position inside of the edited inset relative to sl.inset()
x += xx;
y += yy;
// In case of an RTL inset, the edited inset will be positioned to the left
// of xx:yy
if (sl.text()) {
bool boundary_i = dit.boundary() && i + 1 == dit.depth();
bool rtl = textMetrics(sl.text()).isRTL(sl, boundary_i);
if (rtl)
x -= lastw;
}
// remember width for the case that sl.inset() is positioned in an RTL inset
if (i && dit[i - 1].text()) {
// If this Inset is inside a Text Inset, retrieve the Dimension
// from the containing text instead of using Inset::dimension() which
// might not be implemented.
// FIXME (Abdel 23/09/2007): this is a bit messy because of the
// elimination of Inset::dim_ cache. This coordOffset() method needs
// to be rewritten in light of the new design.
Dimension const & dim = parMetrics(dit[i - 1].text(),
dit[i - 1].pit()).insetDimension(&sl.inset());
lastw = dim.wid;
} else {
Dimension const dim = sl.inset().dimension(*this);
lastw = dim.wid;
}
//lyxerr << "Cursor::getPos, i: "
// << i << " x: " << xx << " y: " << y << endl;
}
// Add contribution of initial rows of outermost paragraph
CursorSlice const & sl = dit[0];
TextMetrics const & tm = textMetrics(sl.text());
ParagraphMetrics const & pm = tm.parMetrics(sl.pit());
LASSERT(!pm.rows().empty(), /**/);
y -= pm.rows()[0].ascent();
#if 1
// FIXME: document this mess
size_t rend;
if (sl.pos() > 0 && dit.depth() == 1) {
int pos = sl.pos();
if (pos && dit.boundary())
--pos;
// lyxerr << "coordOffset: boundary:" << dit.boundary() << " depth:" << dit.depth() << " pos:" << pos << " sl.pos:" << sl.pos() << endl;
rend = pm.pos2row(pos);
} else
rend = pm.pos2row(sl.pos());
#else
size_t rend = pm.pos2row(sl.pos());
#endif
for (size_t rit = 0; rit != rend; ++rit)
y += pm.rows()[rit].height();
y += pm.rows()[rend].ascent();
TextMetrics const & bottom_tm = textMetrics(dit.bottom().text());
// Make relative position from the nested inset now bufferview absolute.
int xx = bottom_tm.cursorX(dit.bottom(), dit.boundary() && dit.depth() == 1);
x += xx;
// In the RTL case place the nested inset at the left of the cursor in
// the outer paragraph
bool boundary_1 = dit.boundary() && 1 == dit.depth();
bool rtl = bottom_tm.isRTL(dit.bottom(), boundary_1);
if (rtl)
x -= lastw;
return Point(x, y);
}
Point BufferView::getPos(DocIterator const & dit) const
{
if (!paragraphVisible(dit))
return Point(-1, -1);
CursorSlice const & bot = dit.bottom();
TextMetrics const & tm = textMetrics(bot.text());
// offset from outer paragraph
Point p = coordOffset(dit);
p.y_ += tm.parMetrics(bot.pit()).position();
return p;
}
bool BufferView::paragraphVisible(DocIterator const & dit) const
{
CursorSlice const & bot = dit.bottom();
TextMetrics const & tm = textMetrics(bot.text());
return tm.contains(bot.pit());
}
void BufferView::cursorPosAndHeight(Point & p, int & h) const
{
Cursor const & cur = cursor();
Font const font = cur.getFont();
frontend::FontMetrics const & fm = theFontMetrics(font);
int const asc = fm.maxAscent();
int const des = fm.maxDescent();
h = asc + des;
p = getPos(cur);
p.y_ -= asc;
}
bool BufferView::cursorInView(Point const & p, int h) const
{
Cursor const & cur = cursor();
// does the cursor touch the screen ?
if (p.y_ + h < 0 || p.y_ >= workHeight() || !paragraphVisible(cur))
return false;
return true;
}
void BufferView::draw(frontend::Painter & pain)
{
if (height_ == 0 || width_ == 0)
return;
LYXERR(Debug::PAINTING, "\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);
switch (d->update_strategy_) {
case NoScreenUpdate:
// If no screen painting is actually needed, only some the different
// coordinates of insets and paragraphs needs to be updated.
pi.full_repaint = true;
pi.pain.setDrawingEnabled(false);
tm.draw(pi, 0, y);
break;
case SingleParUpdate:
pi.full_repaint = false;
// In general, only the current row of the outermost paragraph
// will be redrawn. Particular cases where selection spans
// multiple paragraph are correctly detected in TextMetrics.
tm.draw(pi, 0, y);
break;
case DecorationUpdate:
// FIXME: We should also distinguish DecorationUpdate to avoid text
// drawing if possible. This is not possible to do easily right now
// because of the single backing pixmap.
case FullScreenUpdate:
// The whole screen, including insets, will be refreshed.
pi.full_repaint = true;
// Clear background.
pain.fillRectangle(0, 0, width_, height_,
pi.backgroundColor(&buffer_.inset()));
// Draw everything.
tm.draw(pi, 0, y);
// and possibly grey out below
pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
int const y2 = lastpm.second->position() + lastpm.second->descent();
if (y2 < height_) {
Color color = buffer().isInternal()
? Color_background : Color_bottomarea;
pain.fillRectangle(0, y2, width_, height_ - y2, color);
}
break;
}
LYXERR(Debug::PAINTING, "\n\t\t*** END DRAWING ***");
// The scrollbar needs an update.
updateScrollbar();
// Normalize anchor for next time
pair<pit_type, ParagraphMetrics const *> firstpm = tm.first();
pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
for (pit_type pit = firstpm.first; pit <= lastpm.first; ++pit) {
ParagraphMetrics const & pm = tm.parMetrics(pit);
if (pm.position() + pm.descent() > 0) {
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_);
}
void BufferView::message(docstring const & msg)
{
if (d->gui_)
d->gui_->message(msg);
}
void BufferView::showDialog(string const & name)
{
if (d->gui_)
d->gui_->showDialog(name, string());
}
void BufferView::showDialog(string const & name,
string const & data, Inset * inset)
{
if (d->gui_)
d->gui_->showDialog(name, data, inset);
}
void BufferView::updateDialog(string const & name, string const & data)
{
if (d->gui_)
d->gui_->updateDialog(name, data);
}
void BufferView::setGuiDelegate(frontend::GuiBufferViewDelegate * gui)
{
d->gui_ = gui;
}
// FIXME: Move this out of BufferView again
docstring BufferView::contentsOfPlaintextFile(FileName const & fname)
{
if (!fname.isReadableFile()) {
docstring const error = from_ascii(strerror(errno));
docstring const file = makeDisplayPath(fname.absFileName(), 50);
docstring const text =
bformat(_("Could not read the specified document\n"
"%1$s\ndue to the error: %2$s"), file, error);
Alert::error(_("Could not read file"), text);
return docstring();
}
if (!fname.isReadableFile()) {
docstring const file = makeDisplayPath(fname.absFileName(), 50);
docstring const text =
bformat(_("%1$s\n is not readable."), file);
Alert::error(_("Could not open file"), text);
return docstring();
}
// FIXME UNICODE: We don't know the encoding of the file
docstring file_content = fname.fileContents("UTF-8");
if (file_content.empty()) {
Alert::error(_("Reading not UTF-8 encoded file"),
_("The file is not UTF-8 encoded.\n"
"It will be read as local 8Bit-encoded.\n"
"If this does not give the correct result\n"
"then please change the encoding of the file\n"
"to UTF-8 with a program other than LyX.\n"));
file_content = fname.fileContents("local8bit");
}
return normalize_c(file_content);
}
void BufferView::insertPlaintextFile(FileName const & f, bool asParagraph)
{
docstring const tmpstr = contentsOfPlaintextFile(f);
if (tmpstr.empty())
return;
Cursor & cur = cursor();
cap::replaceSelection(cur);
buffer_.undo().recordUndo(cur);
if (asParagraph)
cur.innerText()->insertStringAsParagraphs(cur, tmpstr, cur.current_font);
else
cur.innerText()->insertStringAsLines(cur, tmpstr, cur.current_font);
buffer_.changed(true);
}
docstring const & BufferView::inlineCompletion() const
{
return d->inlineCompletion_;
}
size_t const & BufferView::inlineCompletionUniqueChars() const
{
return d->inlineCompletionUniqueChars_;
}
DocIterator const & BufferView::inlineCompletionPos() const
{
return d->inlineCompletionPos_;
}
void BufferView::resetInlineCompletionPos()
{
d->inlineCompletionPos_ = DocIterator();
}
bool samePar(DocIterator const & a, DocIterator const & b)
{
if (a.empty() && b.empty())
return true;
if (a.empty() || b.empty())
return false;
if (a.depth() != b.depth())
return false;
return &a.innerParagraph() == &b.innerParagraph();
}
void BufferView::setInlineCompletion(Cursor & cur, DocIterator const & pos,
docstring const & completion, size_t uniqueChars)
{
uniqueChars = min(completion.size(), uniqueChars);
bool changed = d->inlineCompletion_ != completion
|| d->inlineCompletionUniqueChars_ != uniqueChars;
bool singlePar = true;
d->inlineCompletion_ = completion;
d->inlineCompletionUniqueChars_ = min(completion.size(), uniqueChars);
//lyxerr << "setInlineCompletion pos=" << pos << " completion=" << completion << " uniqueChars=" << uniqueChars << std::endl;
// at new position?
DocIterator const & old = d->inlineCompletionPos_;
if (old != pos) {
//lyxerr << "inlineCompletionPos changed" << std::endl;
// old or pos are in another paragraph?
if ((!samePar(cur, pos) && !pos.empty())
|| (!samePar(cur, old) && !old.empty())) {
singlePar = false;
//lyxerr << "different paragraph" << std::endl;
}
d->inlineCompletionPos_ = pos;
}
// set update flags
if (changed) {
if (singlePar && !(cur.result().screenUpdate() & Update::Force))
cur.screenUpdateFlags(cur.result().screenUpdate() | Update::SinglePar);
else
cur.screenUpdateFlags(cur.result().screenUpdate() | Update::Force);
}
}
bool BufferView::clickableInset() const
{
return d->clickable_inset_;
}
} // namespace lyx
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