lyx_mirror/src/insets/insetcollapsable.C
Abdelrazak Younes 4cc7a7708e This commit fixes a crash when accessing a math inset. This was due to an invalid CursorSlice::text() null pointer accessed in InsetMathNest::cursorPos():
CoordCache & coord_cache = sl.text()->bv()->coordCache();

As you can see, I used this indirection to access the BufferView::CoordCache(). Bad luck, the passed CursorSlice was not completely valid inside a mathed inset, hence the crash. My solution is to pass BufferView to InsetBase::cursorPos() and all its derivative.

* InsetBase::cursorPos(): pass BufferView const &

* bufferview_funcs::coordOffset(): ditto.




git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15356 a592a061-630c-0410-9148-cb99ea01b6c8
2006-10-17 16:23:27 +00:00

419 lines
9.2 KiB
C

/**
* \file insetcollapsable.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Alejandro Aguilar Sierra
* \author Jürgen Vigna
* \author Lars Gullik Bjønnes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "insetcollapsable.h"
#include "buffer.h"
#include "bufferparams.h"
#include "BufferView.h"
#include "cursor.h"
#include "debug.h"
#include "dispatchresult.h"
#include "FloatList.h"
#include "FuncStatus.h"
#include "gettext.h"
#include "LColor.h"
#include "lyxlex.h"
#include "funcrequest.h"
#include "metricsinfo.h"
#include "paragraph.h"
#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
using lyx::docstring;
using lyx::graphics::PreviewLoader;
using std::endl;
using std::string;
using std::max;
using std::min;
using std::ostream;
InsetCollapsable::CollapseStatus InsetCollapsable::status() const
{
return (autoOpen_ && status_ != Inlined) ? Open : status_;
}
InsetCollapsable::InsetCollapsable
(BufferParams const & bp, CollapseStatus status)
: InsetText(bp), label(lyx::from_ascii("Label")), status_(status),
openinlined_(false), autoOpen_(false)
{
setAutoBreakRows(true);
setDrawFrame(true);
setFrameColor(LColor::collapsableframe);
setInsetName("Collapsable");
setButtonLabel();
}
void InsetCollapsable::write(Buffer const & buf, ostream & os) const
{
os << "status ";
switch (status_) {
case Open:
os << "open";
break;
case Collapsed:
os << "collapsed";
break;
case Inlined:
os << "inlined";
break;
}
os << "\n";
text_.write(buf, os);
}
void InsetCollapsable::read(Buffer const & buf, LyXLex & lex)
{
bool token_found = false;
if (lex.isOK()) {
lex.next();
string const token = lex.getString();
if (token == "status") {
lex.next();
string const tmp_token = lex.getString();
if (tmp_token == "inlined") {
status_ = Inlined;
token_found = true;
} else if (tmp_token == "collapsed") {
status_ = Collapsed;
token_found = true;
} else if (tmp_token == "open") {
status_ = Open;
token_found = true;
} else {
lyxerr << "InsetCollapsable::read: Missing status!"
<< endl;
// Take countermeasures
lex.pushToken(token);
}
} else {
lyxerr << "InsetCollapsable::read: Missing 'status'-tag!"
<< endl;
// take countermeasures
lex.pushToken(token);
}
}
InsetText::read(buf, lex);
if (!token_found)
status_ = isOpen() ? Open : Collapsed;
setButtonLabel();
}
Dimension InsetCollapsable::dimensionCollapsed() const
{
Dimension dim;
docstring dlab(label.begin(), label.end());
theFontMetrics(labelfont_).buttonText(
dlab, dim.wid, dim.asc, dim.des);
return dim;
}
void InsetCollapsable::metrics(MetricsInfo & mi, Dimension & dim) const
{
autoOpen_ = mi.base.bv->cursor().isInside(this);
mi.base.textwidth -= 2 * TEXT_TO_INSET_OFFSET;
if (status() == Inlined) {
InsetText::metrics(mi, dim);
} else {
dim = dimensionCollapsed();
if (status() == Open) {
InsetText::metrics(mi, textdim_);
// This expression should not contain mi.base.texwidth
openinlined_ = textdim_.wid < 0.5 * mi.base.bv->workWidth();
if (openinlined_) {
// Correct for button width, and re-fit
mi.base.textwidth -= dim.wid;
InsetText::metrics(mi, textdim_);
dim.wid += textdim_.wid;
dim.des = max(dim.des - textdim_.asc + dim.asc, textdim_.des);
dim.asc = textdim_.asc;
} else {
dim.des += textdim_.height() + TEXT_TO_BOTTOM_OFFSET;
dim.wid = max(dim.wid, textdim_.wid);
}
}
}
dim.asc += TEXT_TO_INSET_OFFSET;
dim.des += TEXT_TO_INSET_OFFSET;
dim.wid += 2 * TEXT_TO_INSET_OFFSET;
mi.base.textwidth += 2 * TEXT_TO_INSET_OFFSET;
dim_ = dim;
}
void InsetCollapsable::draw(PainterInfo & pi, int x, int y) const
{
const int xx = x + TEXT_TO_INSET_OFFSET;
if (status() == Inlined) {
InsetText::draw(pi, xx, y);
} else {
Dimension dimc = dimensionCollapsed();
int const top = y - ascent() + TEXT_TO_INSET_OFFSET;
button_dim.x1 = xx + 0;
button_dim.x2 = xx + dimc.width();
button_dim.y1 = top;
button_dim.y2 = top + dimc.height();
docstring dlab(label.begin(), label.end());
pi.pain.buttonText(xx, top + dimc.asc, dlab, labelfont_);
if (status() == Open) {
int textx, texty;
if (openinlined_) {
textx = xx + dimc.width();
texty = top + textdim_.asc;
} else {
textx = xx;
texty = top + dimc.height() + textdim_.asc;
}
InsetText::draw(pi, textx, texty);
}
}
setPosCache(pi, x, y);
}
void InsetCollapsable::drawSelection(PainterInfo & pi, int x, int y) const
{
x += TEXT_TO_INSET_OFFSET;
if (status() == Open) {
if (openinlined_)
x += dimensionCollapsed().wid;
else
y += dimensionCollapsed().des + textdim_.asc;
}
if (status() != Collapsed)
InsetText::drawSelection(pi, x, y);
}
void InsetCollapsable::cursorPos(BufferView const & bv,
CursorSlice const & sl, bool boundary, int & x, int & y) const
{
BOOST_ASSERT(status() != Collapsed);
InsetText::cursorPos(bv, sl, boundary, x, y);
if (status() == Open) {
if (openinlined_)
x += dimensionCollapsed().wid;
else
y += dimensionCollapsed().height() - ascent()
+ TEXT_TO_INSET_OFFSET + textdim_.asc;
}
x += TEXT_TO_INSET_OFFSET;
}
InsetBase::EDITABLE InsetCollapsable::editable() const
{
return status() != Collapsed ? HIGHLY_EDITABLE : IS_EDITABLE;
}
bool InsetCollapsable::descendable() const
{
return status() != Collapsed;
}
bool InsetCollapsable::hitButton(FuncRequest const & cmd) const
{
return button_dim.contains(cmd.x, cmd.y);
}
docstring const InsetCollapsable::getNewLabel(docstring const & l) const
{
docstring label;
pos_type const max_length = 15;
pos_type const p_siz = paragraphs().begin()->size();
pos_type const n = min(max_length, p_siz);
pos_type i = 0;
pos_type j = 0;
for (; i < n && j < p_siz; ++j) {
if (paragraphs().begin()->isInset(j))
continue;
label += paragraphs().begin()->getChar(j);
++i;
}
if (paragraphs().size() > 1 || (i > 0 && j < p_siz)) {
label += "...";
}
return label.empty() ? l : label;
}
void InsetCollapsable::edit(LCursor & cur, bool left)
{
//lyxerr << "InsetCollapsable: edit left/right" << endl;
cur.push(*this);
InsetText::edit(cur, left);
}
InsetBase * InsetCollapsable::editXY(LCursor & cur, int x, int y)
{
//lyxerr << "InsetCollapsable: edit xy" << endl;
if (status() == Collapsed)
return this;
cur.push(*this);
return InsetText::editXY(cur, x, y);
}
void InsetCollapsable::doDispatch(LCursor & cur, FuncRequest & cmd)
{
//lyxerr << "InsetCollapsable::doDispatch (begin): cmd: " << cmd
// << " cur: " << cur << " bvcur: " << cur.bv().cursor() << endl;
switch (cmd.action) {
case LFUN_MOUSE_PRESS:
if (status() == Inlined)
InsetText::doDispatch(cur, cmd);
else if (status() == Open && !hitButton(cmd))
InsetText::doDispatch(cur, cmd);
else
cur.undispatched();
break;
case LFUN_MOUSE_MOTION:
case LFUN_MOUSE_DOUBLE:
case LFUN_MOUSE_TRIPLE:
if (status_ == Inlined)
InsetText::doDispatch(cur, cmd);
else if (status() && !hitButton(cmd))
InsetText::doDispatch(cur, cmd);
else
cur.undispatched();
break;
case LFUN_MOUSE_RELEASE:
if (cmd.button() == mouse_button::button3) {
showInsetDialog(&cur.bv());
break;
}
switch (status()) {
case Collapsed:
//lyxerr << "InsetCollapsable::lfunMouseRelease 1" << endl;
setStatus(cur, Open);
edit(cur, true);
cur.bv().cursor() = cur;
break;
case Open: {
if (hitButton(cmd)) {
//lyxerr << "InsetCollapsable::lfunMouseRelease 2" << endl;
setStatus(cur, Collapsed);
cur.bv().cursor() = cur;
} else {
//lyxerr << "InsetCollapsable::lfunMouseRelease 3" << endl;
InsetText::doDispatch(cur, cmd);
}
break;
}
case Inlined:
//lyxerr << "InsetCollapsable::lfunMouseRelease 4" << endl;
InsetText::doDispatch(cur, cmd);
break;
}
break;
case LFUN_INSET_TOGGLE:
if (cmd.argument() == "open")
setStatus(cur, Open);
else if (cmd.argument() == "close")
setStatus(cur, Collapsed);
else if (cmd.argument() == "toggle" || cmd.argument().empty())
if (isOpen()) {
setStatus(cur, Collapsed);
cur.forwardPosNoDescend();
}
else
setStatus(cur, Open);
else // if assign or anything else
cur.undispatched();
cur.dispatched();
break;
default:
InsetText::doDispatch(cur, cmd);
break;
}
}
bool InsetCollapsable::getStatus(LCursor & cur, FuncRequest const & cmd,
FuncStatus & flag) const
{
switch (cmd.action) {
case LFUN_INSET_TOGGLE:
if (cmd.argument() == "open" || cmd.argument() == "close" ||
cmd.argument() == "toggle")
flag.enabled(true);
else
flag.enabled(false);
return true;
default:
return InsetText::getStatus(cur, cmd, flag);
}
}
void InsetCollapsable::setLabel(docstring const & l)
{
label = l;
}
void InsetCollapsable::setStatus(LCursor & cur, CollapseStatus status)
{
status_ = status;
setButtonLabel();
if (status_ == Collapsed)
cur.leaveInset(*this);
}
void InsetCollapsable::setLabelFont(LyXFont & font)
{
labelfont_ = font;
}
docstring InsetCollapsable::floatName(string const & type, BufferParams const & bp)
{
FloatList const & floats = bp.getLyXTextClass().floats();
FloatList::const_iterator it = floats[type];
// FIXME UNICODE
return (it == floats.end()) ? lyx::from_ascii(type) : _(it->second.name());
}