small up/down tweaking

[lyx.git] / src / mathed / math_metricsinfo.C

diff --git a/src/mathed/math_metricsinfo.C b/src/mathed/math_metricsinfo.C
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..15382d952b250111bbce0b678981d6593ce8fa95 100644 (file)
--- a/src/mathed/math_metricsinfo.C
+++ b/src/mathed/math_metricsinfo.C
@@ -0,0 +1,153 @@
+#ifdef __GNUG__
+#pragma implementation
+#endif
+
+#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_;
+}