+
+#include <config.h>
+
+#include "math_metricsinfo.h"
+#include "math_support.h"
+#include "debug.h"
+#include "frontends/Painter.h"
+
+
+
+MathMetricsBase::MathMetricsBase()
+ : font(), style(LM_ST_TEXT), fontname("mathnormal"),
+ restrictwidth(false), textwidth(0)
+{}
+
+
+
+
+MathMetricsInfo::MathMetricsInfo()
+ : fullredraw(false)
+{}
+
+
+
+
+MathPainterInfo::MathPainterInfo(Painter & p)
+ : pain(p)
+{}
+
+
+void MathPainterInfo::draw(int x, int y, char c)
+{
+ pain.text(x, y, c, base.font);
+}
+
+
+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)
+ : MathStyleChanger(mb, smallerScriptStyle(mb.style))
+{}
+
+
+
+MathStyles smallerFracStyle(MathStyles st)
+{
+ switch (st) {
+ case LM_ST_DISPLAY:
+ return LM_ST_TEXT;
+ 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;
+}
+
+MathFracChanger::MathFracChanger(MathMetricsBase & mb)
+ : MathStyleChanger(mb, smallerFracStyle(mb.style))
+{}
+
+
+
+MathArrayChanger::MathArrayChanger(MathMetricsBase & mb)
+ : MathStyleChanger(mb, mb.style == LM_ST_DISPLAY ? LM_ST_TEXT : mb.style)
+{}
+
+
+MathShapeChanger::MathShapeChanger(LyXFont & font, LyXFont::FONT_SHAPE shape)
+ : MathChanger<LyXFont, LyXFont::FONT_SHAPE>(font)
+{
+ save_ = orig_.shape();
+ orig_.setShape(shape);
+}
+
+MathShapeChanger::~MathShapeChanger()
+{
+ orig_.setShape(save_);
+}
+
+
+
+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;
+ int t = diff[mb.style][style];
+ if (t > 0)
+ while (t--)
+ mb.font.incSize();
+ else
+ while (t++)
+ mb.font.decSize();
+ mb.style = style;
+}
+
+MathStyleChanger::~MathStyleChanger()
+{
+ orig_ = save_;
+}
+
+
+
+MathFontSetChanger::MathFontSetChanger(MathMetricsBase & mb, char const * name)
+ : MathChanger<MathMetricsBase>(mb)
+{
+ save_ = mb;
+ mb.fontname = name;
+ augmentFont(mb.font, name);
+}
+
+MathFontSetChanger::~MathFontSetChanger()
+{
+ orig_ = save_;
+}
+
+
+MathWidthChanger::MathWidthChanger(MathMetricsBase & mb, int w)
+ : MathChanger<MathMetricsBase>(mb)
+{
+ save_ = mb;
+ mb.restrictwidth = true;
+ mb.textwidth = w;
+}
+
+
+MathWidthChanger::~MathWidthChanger()
+{
+ orig_ = save_;
+}