X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FCursor.cpp;h=eff32d05769bf650b7f6846c586efdaf19fa5267;hb=28be7d552f62cc02fa86d7f79201d089bfb2d7b5;hp=b4ca8e0c656a69deacc794185c46e56a50331a22;hpb=700e480a18c5fd30dcb8b58bf136f0010f62a4d6;p=lyx.git

diff --git a/src/Cursor.cpp b/src/Cursor.cpp
index b4ca8e0c65..eff32d0576 100644
--- a/src/Cursor.cpp
+++ b/src/Cursor.cpp
@@ -15,6 +15,7 @@
 #include <config.h>
 
 #include "Buffer.h"
+#include "BufferParams.h"
 #include "BufferView.h"
 #include "CoordCache.h"
 #include "Cursor.h"
@@ -31,6 +32,7 @@
 #include "Paragraph.h"
 #include "ParIterator.h"
 #include "Row.h"
+#include "texstream.h"
 #include "Text.h"
 #include "TextMetrics.h"
 #include "TocBackend.h"
@@ -46,13 +48,13 @@
 
 #include "mathed/InsetMath.h"
 #include "mathed/InsetMathBrace.h"
+#include "mathed/InsetMathEnsureMath.h"
 #include "mathed/InsetMathScript.h"
 #include "mathed/MacroTable.h"
 #include "mathed/MathData.h"
+#include "mathed/MathFactory.h"
 #include "mathed/MathMacro.h"
 
-#include "support/bind.h"
-
 #include <sstream>
 #include <limits>
 #include <map>
@@ -193,13 +195,37 @@ void Cursor::reset()
 }
 
 
-// this (intentionally) does neither touch anchor nor selection status
 void Cursor::setCursor(DocIterator const & cur)
 {
 	DocIterator::operator=(cur);
 }
 
 
+void Cursor::setCursorSelectionTo(DocIterator dit)
+{
+	size_t i = 0;
+	// normalise dit
+	while (i < dit.depth() && i < anchor_.depth() && dit[i] == anchor_[i])
+		++i;
+	if (i != dit.depth()) {
+		// otherwise the cursor is already normal
+		if (i == anchor_.depth())
+			// dit is a proper extension of the anchor_
+			dit.cutOff(i - 1);
+		else if (i + 1 < dit.depth()) {
+			// one has dit[i] != anchor_[i] but either dit[i-1] == anchor_[i-1]
+			// or i == 0. Remove excess.
+			dit.cutOff(i);
+			if (dit[i] > anchor_[i])
+				// place dit after the inset it was in
+				++dit.pos();
+		}
+	}
+	setCursor(dit);
+	setSelection();
+}
+
+
 void Cursor::setCursorToAnchor()
 {
 	if (selection()) {
@@ -525,24 +551,6 @@ void Cursor::checkNewWordPosition()
 }
 
 
-bool Cursor::posBackward()
-{
-	if (pos() == 0)
-		return false;
-	--pos();
-	return true;
-}
-
-
-bool Cursor::posForward()
-{
-	if (pos() == lastpos())
-		return false;
-	++pos();
-	return true;
-}
-
-
 bool Cursor::posVisRight(bool skip_inset)
 {
 	Cursor new_cur = *this; // where we will move to
@@ -759,12 +767,11 @@ void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
 	right_pos = -1;
 
 	Row const & row = textRow();
-	TextMetrics const & tm = bv_->textMetrics(text());
 	double dummy = 0;
-	Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
+	Row::const_iterator cit = row.findElement(pos(), boundary(), dummy);
 	// Handle the case of empty row
 	if (cit == row.end()) {
-		if (paragraph().isRTL(buffer()->params()))
+		if (row.isRTL())
 			right_pos = row.pos();
 		else
 			left_pos = row.pos() - 1;
@@ -838,10 +845,8 @@ void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
 
 bool Cursor::posVisToNewRow(bool movingLeft)
 {
-	Paragraph const & par = paragraph();
-	Buffer const & buf = *buffer();
 	Row const & row = textRow();
-	bool par_is_LTR = !par.isRTL(buf.params());
+	bool par_is_LTR = !row.isRTL();
 
 	// Inside a table, determining whether to move to the next or
 	// previous row should be done based on the table's direction.
@@ -997,18 +1002,18 @@ DocIterator Cursor::selectionEnd() const
 
 void Cursor::setSelection()
 {
-	setSelection(true);
+	selection(true);
 	if (idx() == normalAnchor().idx() &&
 	    pit() == normalAnchor().pit() &&
 	    pos() == normalAnchor().pos())
-		setSelection(false);
+		selection(false);
 }
 
 
 void Cursor::setSelection(DocIterator const & where, int n)
 {
 	setCursor(where);
-	setSelection(true);
+	selection(true);
 	anchor_ = where;
 	pos() += n;
 }
@@ -1016,7 +1021,7 @@ void Cursor::setSelection(DocIterator const & where, int n)
 
 void Cursor::clearSelection()
 {
-	setSelection(false);
+	selection(false);
 	setWordSelection(false);
 	setMark(false);
 	resetAnchor();
@@ -1079,7 +1084,7 @@ bool Cursor::selHandle(bool sel)
 		cap::saveSelection(*this);
 
 	resetAnchor();
-	setSelection(sel);
+	selection(sel);
 	return true;
 }
 } // namespace lyx
@@ -1184,9 +1189,8 @@ void Cursor::plainInsert(MathAtom const & t)
 
 void Cursor::insert(docstring const & str)
 {
-	for_each(str.begin(), str.end(),
-		 bind(static_cast<void(Cursor::*)(char_type)>
-			     (&Cursor::insert), this, _1));
+	for (char_type c : str)
+		insert(c);
 }
 
 
@@ -1279,7 +1283,7 @@ void Cursor::insert(MathData const & ar)
 }
 
 
-bool Cursor::backspace()
+bool Cursor::backspace(bool const force)
 {
 	if (selection()) {
 		cap::eraseSelection(*this);
@@ -1315,11 +1319,11 @@ bool Cursor::backspace()
 		}
 	}
 
-	if (pos() != 0 && prevAtom()->nargs() > 0) {
+	if (pos() != 0 && !force && prevAtom()->confirmDeletion()) {
 		// let's require two backspaces for 'big stuff' and
 		// highlight on the first
 		resetAnchor();
-		setSelection(true);
+		selection(true);
 		--pos();
 	} else {
 		--pos();
@@ -1329,7 +1333,7 @@ bool Cursor::backspace()
 }
 
 
-bool Cursor::erase()
+bool Cursor::erase(bool const force)
 {
 	if (inMacroMode())
 		return true;
@@ -1364,9 +1368,9 @@ bool Cursor::erase()
 	}
 
 	// 'clever' UI hack: only erase large items if previously slected
-	if (pos() != lastpos() && nextAtom()->nargs() > 0) {
+	if (pos() != lastpos() && !force && nextAtom()->confirmDeletion()) {
 		resetAnchor();
-		setSelection(true);
+		selection(true);
 		++pos();
 	} else {
 		plainErase();
@@ -1426,8 +1430,9 @@ bool Cursor::macroModeClose()
 	InsetMathNest * const in = inset().asInsetMath()->asNestInset();
 	if (in && in->interpretString(*this, s))
 		return true;
-	MathAtom atom = buffer()->getMacro(name, *this, false) ?
-		MathAtom(new MathMacro(buffer(), name)) : createInsetMath(name, buffer());
+	bool const user_macro = buffer()->getMacro(name, *this, false);
+	MathAtom atom = user_macro ? MathAtom(new MathMacro(buffer(), name))
+				   : createInsetMath(name, buffer());
 
 	// try to put argument into macro, if we just inserted a macro
 	bool macroArg = false;
@@ -1449,7 +1454,29 @@ bool Cursor::macroModeClose()
 	else if (atom.nucleus()->nargs() > 0)
 		atom.nucleus()->cell(0).append(selection);
 
-	plainInsert(atom);
+	MathWordList const & words = mathedWordList();
+	MathWordList::const_iterator it = words.find(name);
+	bool keep_mathmode = it != words.end() && (it->second.inset == "font"
+						|| it->second.inset == "oldfont"
+						|| it->second.inset == "mbox");
+	bool ert_macro = !user_macro && it == words.end() && atomAsMacro;
+
+	if (in && in->currentMode() == Inset::TEXT_MODE
+	    && atom.nucleus()->currentMode() == Inset::MATH_MODE
+	    && name != from_ascii("ensuremath") && !ert_macro) {
+		MathAtom at(new InsetMathEnsureMath(buffer()));
+		at.nucleus()->cell(0).push_back(atom);
+		niceInsert(at);
+		posForward();
+	} else if (in && in->currentMode() == Inset::MATH_MODE
+		   && atom.nucleus()->currentMode() == Inset::TEXT_MODE
+		   && !keep_mathmode) {
+		MathAtom at = createInsetMath("text", buffer());
+		at.nucleus()->cell(0).push_back(atom);
+		niceInsert(at);
+		posForward();
+	} else
+		plainInsert(atom);
 
 	// finally put the macro argument behind, if needed
 	if (macroArg) {
@@ -1569,8 +1596,7 @@ void Cursor::normalize()
 			<< pos() << ' ' << lastpos() <<  " in idx: " << idx()
 		       << " in atom: '";
 		odocstringstream os;
-		TexRow texrow(false);
-		otexrowstream ots(os,texrow);
+		otexrowstream ots(os);
 		WriteStream wi(ots, false, true, WriteStream::wsDefault);
 		inset().asInsetMath()->write(wi);
 		lyxerr << to_utf8(os.str()) << endl;
@@ -1695,6 +1721,95 @@ bool Cursor::upDownInMath(bool up)
 }
 
 
+InsetMath & Cursor::nextMath()
+{
+	return *nextAtom().nucleus();
+}
+
+
+InsetMath & Cursor::prevMath()
+{
+	return *prevAtom().nucleus();
+}
+
+
+bool Cursor::mathForward(bool word)
+{
+	LASSERT(inMathed(), return false);
+	if (pos() < lastpos()) {
+		if (word) {
+			// word: skip a group of insets of the form X*(B*|R*|P*) (greedy
+			// match) where X is any math class, B is mathbin, R is mathrel, and
+			// P is mathpunct. Make sure that the following remains true:
+			//   mathForward(true); mathBackward(true); mathForward(true)
+			// is the same as mathForward(true) and
+			//   mathBackward(true); mathForward(true); mathBackward(true)
+			// is the same as mathBackward(true).
+			MathClass mc = nextMath().mathClass();
+			do
+				posForward();
+			while (pos() < lastpos() && mc == nextMath().mathClass());
+			if (pos() < lastpos() &&
+			    ((mc = nextMath().mathClass()) == MC_BIN ||
+			     mc == MC_REL || mc == MC_PUNCT))
+				do
+					posForward();
+				while (pos() < lastpos() && mc == nextMath().mathClass());
+		} else if (openable(nextAtom())) {
+			// single step: try to enter the next inset
+			pushBackward(nextMath());
+			inset().idxFirst(*this);
+		} else
+			posForward();
+		return true;
+	}
+	if (inset().idxForward(*this))
+		return true;
+	// try to pop forwards --- but don't pop out of math! leave that to
+	// the FINISH lfuns
+	int s = depth() - 2;
+	if (s >= 0 && operator[](s).inset().asInsetMath())
+		return popForward();
+	return false;
+}
+
+
+bool Cursor::mathBackward(bool word)
+{
+	LASSERT(inMathed(), return false);
+	if (pos() > 0) {
+		if (word) {
+			// word: skip a group of insets. See the comment in mathForward.
+			MathClass mc = prevMath().mathClass();
+			do
+				posBackward();
+			while (pos() > 0 && mc == prevMath().mathClass());
+			if (pos() > 0 && (mc == MC_BIN || mc == MC_REL || mc == MC_PUNCT)) {
+				mc = prevMath().mathClass();
+				do
+					posBackward();
+				while (pos() > 0 && mc == prevMath().mathClass());
+			}
+		} else if (openable(prevAtom())) {
+			// single step: try to enter the preceding inset
+			posBackward();
+			push(nextMath());
+			inset().idxLast(*this);
+		} else
+			posBackward();
+		return true;
+	}
+	if (inset().idxBackward(*this))
+		return true;
+	// try to pop backwards --- but don't pop out of math! leave that to
+	// the FINISH lfuns
+	int s = depth() - 2;
+	if (s >= 0 && operator[](s).inset().asInsetMath())
+		return popBackward();
+	return false;
+}
+
+
 bool Cursor::atFirstOrLastRow(bool up)
 {
 	TextMetrics const & tm = bv_->textMetrics(text());
@@ -1809,10 +1924,13 @@ bool Cursor::upDownInText(bool up, bool & updateNeeded)
 		int yo = bv().getPos(*this).y_;
 		Cursor old = *this;
 		// To next/previous row
+		// FIXME: the y position is often guessed wrongly across styles and
+		// insets, which leads to weird behaviour.
 		if (up)
 			tm.editXY(*this, xo, yo - textRow().ascent() - 1);
 		else
 			tm.editXY(*this, xo, yo + textRow().descent() + 1);
+		x_target_ = old.x_target_;
 		clearSelection();
 
 		// This happens when you move out of an inset.
@@ -2020,10 +2138,14 @@ Encoding const * Cursor::getEncoding() const
 {
 	if (empty())
 		return 0;
+	BufferParams const & bp = bv().buffer().params();
+	if (bp.useNonTeXFonts)
+		return encodings.fromLyXName("utf8-plain");
+
 	CursorSlice const & sl = innerTextSlice();
 	Text const & text = *sl.text();
-	Font font = text.getPar(sl.pit()).getFont(
-		bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
+	Font font = text.getPar(sl.pit()).getFont(bp, sl.pos(),
+	                                          text.outerFont(sl.pit()));
 	return font.language()->encoding();
 }
 
@@ -2075,6 +2197,7 @@ Font Cursor::getFont() const
 	// The logic here should more or less match to the
 	// Cursor::setCurrentFont logic, i.e. the cursor height should
 	// give a hint what will happen if a character is entered.
+	// FIXME: this is not the case, what about removing this method ? (see #10478).
 
 	// HACK. far from being perfect...
 
@@ -2122,6 +2245,7 @@ void Cursor::sanitize()
 {
 	setBuffer(&bv_->buffer());
 	DocIterator::sanitize();
+	new_word_.sanitize();
 	if (selection())
 		anchor_.sanitize();
 	else
@@ -2315,4 +2439,39 @@ void Cursor::checkBufferStructure()
 }
 
 
+bool Cursor::confirmDeletion(bool const before) const
+{
+	if (!selection()) {
+		if (Inset const * inset = before ? prevInset() : nextInset())
+			return inset->confirmDeletion();
+	} else {
+		DocIterator dit = selectionBegin();
+		CursorSlice const end = selectionEnd().top();
+		for (; dit.top() < end; dit.top().forwardPos())
+			if (Inset const * inset = dit.nextInset())
+				if (inset->confirmDeletion())
+					return true;
+	}
+	return false;
+}
+
+
+void Cursor::moveToClosestEdge(int const x, bool const edit)
+{
+	if (Inset const * inset = nextInset()) {
+		// stay in front of insets for which we want to open the dialog
+		// (e.g. InsetMathSpace).
+		if (edit && (inset->hasSettings() || !inset->contextMenuName().empty()))
+			return;
+		CoordCache::Insets const & insetCache = bv().coordCache().getInsets();
+		if (!insetCache.has(inset))
+			return;
+		int const wid = insetCache.dim(inset).wid;
+		Point p = insetCache.xy(inset);
+		if (x > p.x_ + (wid + 1) / 2)
+			posForward();
+	}
+}
+
+
 } // namespace lyx