lyx_mirror/src/bufferview_funcs.cpp

357 lines
8.5 KiB
C++
Raw Normal View History

/**
* \file bufferview_funcs.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bj<EFBFBD>nnes
* \author Jean-Marc Lasgouttes
* \author John Levon
* \author Angus Leeming
* \author Juergen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "bufferview_funcs.h"
#include "Author.h"
#include "Buffer.h"
#include "BufferParams.h"
#include "BufferView.h"
#include "Cursor.h"
#include "CoordCache.h"
#include "gettext.h"
#include "Language.h"
#include "Color.h"
#include "Lexer.h"
#include "Row.h"
#include "Paragraph.h"
#include "ParagraphParameters.h"
#include "ParIterator.h"
#include "frontends/alert.h"
#include "insets/InsetCommand.h"
#include "insets/InsetText.h"
#include "support/convert.h"
#include <sstream>
namespace lyx {
using support::bformat;
using std::istringstream;
using std::ostringstream;
using std::string;
using std::vector;
using std::find;
namespace bv_funcs {
// Set data using font and toggle
// If successful, returns true
bool font2string(Font const & font, bool const toggle, string & data)
{
string lang = "ignore";
if (font.language())
lang = font.language()->lang();
ostringstream os;
os << "family " << font.family() << '\n'
<< "series " << font.series() << '\n'
<< "shape " << font.shape() << '\n'
<< "size " << font.size() << '\n'
<< "emph " << font.emph() << '\n'
<< "underbar " << font.underbar() << '\n'
<< "noun " << font.noun() << '\n'
<< "number " << font.number() << '\n'
<< "color " << font.color() << '\n'
<< "language " << lang << '\n'
<< "toggleall " << convert<string>(toggle);
data = os.str();
return true;
}
// Set font and toggle using data
// If successful, returns true
bool string2font(string const & data, Font & font, bool & toggle)
{
istringstream is(data);
Lexer lex(0,0);
lex.setStream(is);
int nset = 0;
while (lex.isOK()) {
string token;
if (lex.next())
token = lex.getString();
if (token.empty() || !lex.next())
break;
if (token == "family") {
int const next = lex.getInteger();
font.setFamily(Font::FONT_FAMILY(next));
} else if (token == "series") {
int const next = lex.getInteger();
font.setSeries(Font::FONT_SERIES(next));
} else if (token == "shape") {
int const next = lex.getInteger();
font.setShape(Font::FONT_SHAPE(next));
} else if (token == "size") {
int const next = lex.getInteger();
font.setSize(Font::FONT_SIZE(next));
} else if (token == "emph" || token == "underbar" ||
token == "noun" || token == "number") {
int const next = lex.getInteger();
Font::FONT_MISC_STATE const misc =
Font::FONT_MISC_STATE(next);
if (token == "emph")
font.setEmph(misc);
else if (token == "underbar")
font.setUnderbar(misc);
else if (token == "noun")
font.setNoun(misc);
else if (token == "number")
font.setNumber(misc);
} else if (token == "color") {
int const next = lex.getInteger();
font.setColor(Color::color(next));
} else if (token == "language") {
string const next = lex.getString();
if (next == "ignore")
font.setLanguage(ignore_language);
else
font.setLanguage(languages.getLanguage(next));
} else if (token == "toggleall") {
toggle = lex.getBool();
} else {
// Unrecognised token
break;
}
++nset;
}
return (nset > 0);
}
// the next two should probably go elsewhere
// this give the position relative to (0, baseline) of outermost
// paragraph
Point coordOffset(BufferView const & bv, DocIterator const & dit,
bool boundary)
{
int x = 0;
int y = 0;
int lastw = 0;
// Addup ontribution 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(bv, sl, 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 = boundary && i + 1 == dit.depth();
bool rtl = sl.text()->isRTL(*bv.buffer(), sl, boundary_i);
if (rtl)
x -= lastw;
}
// remember width for the case that sl.inset() is positioned in an RTL inset
lastw = sl.inset().width();
//lyxerr << "Cursor::getPos, i: "
// << i << " x: " << xx << " y: " << y << endl;
}
// Add contribution of initial rows of outermost paragraph
CursorSlice const & sl = dit[0];
ParagraphMetrics const & pm = bv.parMetrics(sl.text(), sl.pit());
BOOST_ASSERT(!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 && boundary)
--pos;
// lyxerr << "coordOffset: boundary:" << boundary << " depth:" << dit.depth() << " pos:" << pos << " sl.pos:" << sl.pos() << std::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();
// Make relative position from the nested inset now bufferview absolute.
int xx = dit.bottom().text()->cursorX(bv, dit.bottom(), 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 = boundary && 1 == dit.depth();
bool rtl = dit.bottom().text()->isRTL(*bv.buffer(), dit.bottom(), boundary_1);
if (rtl)
x -= lastw;
return Point(x, y);
}
Point getPos(BufferView const & bv, DocIterator const & dit, bool boundary)
{
CursorSlice const & bot = dit.bottom();
CoordCache::ParPosCache::const_iterator cache_it =
bv.coordCache().getParPos().find(bot.text());
if (cache_it == bv.coordCache().getParPos().end())
return Point(-1, -1);
CoordCache::InnerParPosCache const & cache = cache_it->second;
CoordCache::InnerParPosCache::const_iterator it = cache.find(bot.pit());
if (it == cache.end()) {
//lyxerr << "cursor out of view" << std::endl;
return Point(-1, -1);
}
Point p = coordOffset(bv, dit, boundary); // offset from outer paragraph
p.y_ += it->second.y_;
return p;
}
// this could be used elsewhere as well?
// FIXME: This does not work within mathed!
CurStatus status(BufferView const * bv, DocIterator const & dit)
{
CoordCache::InnerParPosCache const & cache =
bv->coordCache().getParPos().find(dit.bottom().text())->second;
if (cache.find(dit.bottom().pit()) != cache.end())
return CUR_INSIDE;
else if (dit.bottom().pit() < bv->anchor_ref())
return CUR_ABOVE;
else
return CUR_BELOW;
}
namespace {
bool findNextInset(DocIterator & dit,
vector<Inset_code> const & codes,
string const & contents)
{
DocIterator tmpdit = dit;
while (tmpdit) {
Inset const * inset = tmpdit.nextInset();
if (inset
&& find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()
&& (contents.empty() ||
static_cast<InsetCommand const *>(inset)->getContents() == contents)) {
dit = tmpdit;
return true;
}
tmpdit.forwardInset();
}
return false;
}
} // namespace anon
bool findInset(DocIterator & dit, vector<Inset_code> const & codes,
bool same_content)
{
string contents;
DocIterator tmpdit = dit;
tmpdit.forwardInset();
if (!tmpdit)
return false;
if (same_content) {
Inset const * inset = tmpdit.nextInset();
if (inset
&& find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()) {
contents = static_cast<InsetCommand const *>(inset)->getContents();
}
}
if (!findNextInset(tmpdit, codes, contents)) {
if (dit.depth() != 1 || dit.pit() != 0 || dit.pos() != 0) {
tmpdit = doc_iterator_begin(tmpdit.bottom().inset());
if (!findNextInset(tmpdit, codes, contents)) {
return false;
}
} else
return false;
}
dit = tmpdit;
return true;
}
void findInset(DocIterator & dit, Inset_code code, bool same_content)
{
findInset(dit, vector<Inset_code>(1, code), same_content);
}
void gotoInset(BufferView * bv, vector<Inset_code> 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);
}
void gotoInset(BufferView * bv, Inset_code code, bool same_content)
{
gotoInset(bv, vector<Inset_code>(1, code), same_content);
}
} // namespace bv_funcs
} // namespace lyx