several fixes concerning font size in scripts/fractions/etc

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4865 a592a061-630c-0410-9148-cb99ea01b6c8

src/mathed/math_cursor.C

@@ -1332,7 +1332,7 @@ bool MathCursor::interpret(char c)
 	// handle macroMode
 	if (inMacroMode()) {
 		string name = macroName();
-		lyxerr << "interpret name: '" << name << "'\n";
+		//lyxerr << "interpret name: '" << name << "'\n";
 
 		if (name.empty() && c == '\\') {
 			backspace();

src/mathed/math_extern.C

@@ -441,7 +441,7 @@ void extractFunctions(MathArray & ar)
 		// is it a function?
 		if ((*it)->asUnknownInset()) {
 			// it certainly is if it is well known...
-			name = (*it)->asUnknownInset()->name();
+			name = (*it)->name();
 		} else {
 			// is this a user defined function?
 			// it it probably not, if it doesn't have a name.

src/mathed/math_inset.h

@@ -62,8 +62,6 @@ class MathStringInset;
 class MathSpaceInset;
 class MathSymbolInset;
 class MathUnknownInset;
-class MathXYMatrixInset;
-class MathXYMatrixInset;
 
 class InsetRef;
 
@@ -211,7 +209,6 @@ public:
 	virtual MathSymbolInset const  * asSymbolInset() const  { return 0; }
 	virtual MathUnknownInset       * asUnknownInset()       { return 0; }
 	virtual MathUnknownInset const * asUnknownInset() const { return 0; }
-	virtual MathXYMatrixInset const* asXYMatrixInset() const{ return 0; }
 	virtual InsetRef               * asInsetRef()           { return 0; }
 
 	/// identifies things that can get scripts

src/mathed/math_metricsinfo.C

@@ -3,6 +3,7 @@
 
 #include "math_metricsinfo.h"
 #include "math_support.h"
+#include "debug.h"
 #include "frontends/Painter.h"
 
 
@@ -33,63 +34,48 @@ void MathPainterInfo::draw(int x, int y, char c)
 }
 
 
+MathStyles smallerScriptStyle(MathStyles st)
+{
+	switch (st) {
+		case LM_ST_DISPLAY:
+		case LM_ST_TEXT:
+			return LM_ST_SCRIPT;
+		case LM_ST_SCRIPT:
+		case LM_ST_SCRIPTSCRIPT:
+			return LM_ST_SCRIPTSCRIPT;
+	}
+	// shut up compiler
+	lyxerr << "should not happen\n";
+	return LM_ST_DISPLAY;
+}
 
 
 MathScriptChanger::MathScriptChanger(MathMetricsBase & mb)
-	: MathChanger<MathMetricsBase>(mb)
+	: MathStyleChanger(mb, smallerScriptStyle(mb.style))
+{}
+
+
+
+MathStyles smallerFracStyle(MathStyles st)
 {
-	save_ = mb;
-	switch (mb.style) {
+	switch (st) {
 		case LM_ST_DISPLAY:
+			return LM_ST_TEXT;
 		case LM_ST_TEXT:
-			mb.style = LM_ST_SCRIPT;
-			mb.font.decSize();
-			mb.font.decSize();
-			break;
+			return LM_ST_SCRIPT;
 		case LM_ST_SCRIPT:
-			mb.style = LM_ST_SCRIPTSCRIPT;
-			mb.font.decSize();
-		default:
-			break;
+		case LM_ST_SCRIPTSCRIPT:
+			return LM_ST_SCRIPTSCRIPT;
 	}
-}
-
-MathScriptChanger::~MathScriptChanger()
-{
-	orig_ = save_;
+	// shut up compiler
+	lyxerr << "should not happen\n";
+	return LM_ST_DISPLAY;
 }
 
 
-
-
-// decrease math size for fractions
 MathFracChanger::MathFracChanger(MathMetricsBase & mb)
-	: MathChanger<MathMetricsBase>(mb)
-{
-	save_ = mb;
-	switch (mb.style) {
-		case LM_ST_DISPLAY:
-			mb.style = LM_ST_TEXT;
-			break;
-		case LM_ST_TEXT:
-			mb.style = LM_ST_SCRIPT;
-			mb.font.decSize();
-			mb.font.decSize();
-			break;
-		case LM_ST_SCRIPT:
-			mb.style = LM_ST_SCRIPTSCRIPT;
-			mb.font.decSize();
-			break;
-		default:
-			break;
-	}
-}
-
-MathFracChanger::~MathFracChanger()
-{
-	orig_ = save_;
-}
-
+	: MathStyleChanger(mb, smallerFracStyle(mb.style))
+{}
 
 
 
@@ -108,22 +94,22 @@ MathShapeChanger::~MathShapeChanger()
 
 
 
-void changeSize(LyXFont & font, int diff)
-{
-	if (diff < 0) {
-		font.decSize();
-		changeSize(font, diff + 1);
-	} else if (diff > 0) {
-		font.incSize();
-		changeSize(font, diff - 1);
-	}
-}
-
 MathStyleChanger::MathStyleChanger(MathMetricsBase & mb, MathStyles style)
 	:	MathChanger<MathMetricsBase>(mb)
 {
+	static const int diff[4][4]  = { { 0, 0, -3, -5 },
+	                                 { 0, 0, -3, -5 },
+	                                 { 3, 3,  0, -2 },
+	                                 { 5, 5,  2,  0 } };
 	save_ = mb;
-	changeSize(mb.font, mb.style - style);
+	int t = diff[mb.style][style];
+	if (t > 0) 
+		while (t--)
+			mb.font.incSize();
+	else 
+		while (t++)
+			mb.font.decSize();
+	mb.style = style;
 }
 
 

src/mathed/math_metricsinfo.h

@@ -79,23 +79,6 @@ protected:
 
 
 
-struct MathScriptChanger : public MathChanger<MathMetricsBase> {
-	///
-	MathScriptChanger(MathMetricsBase & orig);
-	///
-	~MathScriptChanger();
-};
-
-
-struct MathFracChanger : public MathChanger<MathMetricsBase> {
-	///
-	MathFracChanger(MathMetricsBase & orig);
-	///
-	~MathFracChanger();
-};
-
-
-
 struct MathFontChanger : public MathChanger<LyXFont> {
 	///
 	MathFontChanger(LyXFont & orig, char const * font);
@@ -120,6 +103,18 @@ struct MathStyleChanger : public MathChanger<MathMetricsBase> {
 };
 
 
+struct MathScriptChanger : public MathStyleChanger {
+	///
+	MathScriptChanger(MathMetricsBase & mb);
+};
+
+
+struct MathFracChanger : public MathStyleChanger {
+	///
+	MathFracChanger(MathMetricsBase & mb);
+};
+
+
 struct MathShapeChanger : public MathChanger<LyXFont, LyXFont::FONT_SHAPE> {
 	///
 	MathShapeChanger(LyXFont & font, LyXFont::FONT_SHAPE shape);

src/mathed/math_scriptinset.C

@@ -184,8 +184,10 @@ int MathScriptInset::ndes() const
 
 void MathScriptInset::metrics(MathMetricsInfo & mi) const
 {
-	MathNestInset::metrics(mi);
+	cell(2).metrics(mi);
 	MathScriptChanger dummy(mi.base);
+	cell(0).metrics(mi);
+	cell(1).metrics(mi);
 	dim_.w = 0;
 	if (hasLimits()) {
 		dim_.w = nwid();