From cd8d582c67a873f32e0d1fac5212cc42765d9ed6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20P=C3=B6nitz?= <poenitz@gmx.net>
Date: Wed, 25 Jul 2001 14:15:05 +0000
Subject: [PATCH] M-m <space>  as substitute for the old  C-<space> <space>
 'enlarge space' feature

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2339 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/mathed/ChangeLog         |  4 ++++
 src/mathed/formulabase.C     | 12 ++++++++++++
 src/mathed/math_cursor.C     |  8 ++++++++
 src/mathed/math_cursor.h     |  3 +++
 src/mathed/math_inset.h      |  2 ++
 src/mathed/math_spaceinset.C | 22 +++++++---------------
 src/mathed/math_spaceinset.h |  4 ++--
 7 files changed, 38 insertions(+), 17 deletions(-)

diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index 17c0c25748..384d5f81b6 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -1,3 +1,7 @@
+2001-07-25  André Pönitz  <poenitz@gmx.net>
+	
+	* formulabase.C: re-enable 'space enlargement' feature
+
 2001-07-22  André Pönitz  <poenitz@gmx.net>
 
 	* math_cursor.C: fix "pullArg" behaviour
diff --git a/src/mathed/formulabase.C b/src/mathed/formulabase.C
index baed9845a6..2dd0a2d97e 100644
--- a/src/mathed/formulabase.C
+++ b/src/mathed/formulabase.C
@@ -617,6 +617,18 @@ InsetFormulaBase::localDispatch(BufferView * bv, kb_action action,
 		}
 		break;
 
+	case LFUN_MATH_SPACE:
+	{
+		bv->lockedInsetStoreUndo(Undo::EDIT);
+		MathSpaceInset * p = mathcursor->prevSpaceInset();
+		if (p) 
+			p->incSpace();
+		else
+			mathcursor->insert(new MathSpaceInset(1));
+		updateLocal(bv, true);
+		break;
+	}
+
 	case LFUN_MATH_DELIM:
 	{
 		bv->lockedInsetStoreUndo(Undo::INSERT);
diff --git a/src/mathed/math_cursor.C b/src/mathed/math_cursor.C
index bba13ac2e4..ca5852a3ca 100644
--- a/src/mathed/math_cursor.C
+++ b/src/mathed/math_cursor.C
@@ -1103,6 +1103,14 @@ MathUpDownInset * MathCursor::prevUpDownInset() const
 }
 
 
+MathSpaceInset * MathCursor::prevSpaceInset() const
+{
+	normalize();
+	MathInset * p = array().prevInset(cursor().pos_);
+	return (p && p->isSpaceInset()) ? static_cast<MathSpaceInset *>(p) : 0;
+}
+
+
 MathArray & MathCursor::array() const
 {
 	static MathArray dummy;
diff --git a/src/mathed/math_cursor.h b/src/mathed/math_cursor.h
index c8a7e574e4..769143eb05 100644
--- a/src/mathed/math_cursor.h
+++ b/src/mathed/math_cursor.h
@@ -26,6 +26,7 @@
 class MathInset;
 class MathFuncInset;
 class MathUpDownInset;
+class MathSpaceInset;
 class InsetFormulaBase;
 class MathArray;
 class MathXArray;
@@ -259,6 +260,8 @@ public:
 	MathInset * prevInset() const;
 	///
 	MathUpDownInset * prevUpDownInset() const;
+	///
+	MathSpaceInset * prevSpaceInset() const;
 
 	///
 	MathFuncInset * imacro;
diff --git a/src/mathed/math_inset.h b/src/mathed/math_inset.h
index 76279a1970..b5ad07d7d1 100644
--- a/src/mathed/math_inset.h
+++ b/src/mathed/math_inset.h
@@ -182,6 +182,8 @@ public:
 	virtual bool isUpDownInset() const { return false; }
 	/// Identifies BigopInsets
 	virtual bool isBigopInset() const { return false; }
+	/// Identifies SpaceInsets
+	virtual bool isSpaceInset() const { return false; }
 	///
 	virtual bool isActive() const { return nargs() > 0; }
 
diff --git a/src/mathed/math_spaceinset.C b/src/mathed/math_spaceinset.C
index 926546a72c..8f9d999825 100644
--- a/src/mathed/math_spaceinset.C
+++ b/src/mathed/math_spaceinset.C
@@ -34,15 +34,14 @@ void MathSpaceInset::draw(Painter & pain, int x, int y)
 	xp[2] = x + width_ - 2;  yp[2] = y;
 	xp[3] = x + width_ - 2;  yp[3] = y - 3;
 	
-	pain.lines(xp, yp, 4, (space_) ? LColor::latex : LColor::math);
+	pain.lines(xp, yp, 4, space_ ? LColor::latex : LColor::math);
 }
 
 
 void MathSpaceInset::Write(std::ostream & os, bool /* fragile */) const
 {
-	if (space_ >= 0 && space_ < 6) {
+	if (space_ >= 0 && space_ < 6)
 		os << '\\' << latex_mathspace[space_] << ' ';
-	}
 }
 
 
@@ -54,26 +53,19 @@ void MathSpaceInset::WriteNormal(std::ostream & os) const
 
 void MathSpaceInset::Metrics(MathStyles st, int, int)
 {
-	size_ = st;
+	size_  = st;
 	width_ = space_ ? space_ * 2 : 2;
 	if (space_ > 3)
 		width_ *= 2;
 	if (space_ == 5)
 		width_ *= 2;
-	width_ += 4;
-	ascent_ = 4;
+	width_  += 4;
+	ascent_  = 4;
 	descent_ = 0;
 }
 
 
-void MathSpaceInset::SetSpace(int sp)
-{ 
-	space_ = sp;
-	Metrics(size_);
-}
-
-
-int MathSpaceInset::GetSpace()
+void MathSpaceInset::incSpace()
 {
-	return space_;
+	space_ = (space_ + 1) % 6;
 }
diff --git a/src/mathed/math_spaceinset.h b/src/mathed/math_spaceinset.h
index 620f4d2bdd..df88004c9a 100644
--- a/src/mathed/math_spaceinset.h
+++ b/src/mathed/math_spaceinset.h
@@ -25,9 +25,9 @@ public:
 	///
 	void Metrics(MathStyles st, int asc = 0, int des = 0);
 	///
-	void SetSpace(int sp);
+	bool isSpaceInset() const { return true; }
 	///
-	int GetSpace();
+	void incSpace();
 private:
 	///
 	int space_;