src/mathed/math_metricsinfo.C

   1
   2 #include <config.h>
   3
   4 #include "math_metricsinfo.h"
   5 #include "math_support.h"
   6 #include "frontends/Painter.h"
   7
   8
   9
  10 MathMetricsBase::MathMetricsBase()
  11         : font(), style(LM_ST_TEXT), fontname("mathnormal"),
  12           restrictwidth(false), textwidth(0)
  13 {}
  14
  15
  16
  17 MathMetricsInfo::MathMetricsInfo()
  18         : fullredraw(false)
  19 {}
  20
  21
  22
  23 MathPainterInfo::MathPainterInfo(Painter & p)
  24         : pain(p)
  25 {}
  26
  27
  28 void MathPainterInfo::draw(int x, int y, char c)
  29 {
  30         pain.text(x, y, c, base.font);
  31 }
  32
  33
  34
  35
  36 MathScriptChanger::MathScriptChanger(MathMetricsBase & mb)
  37         : MathChanger<MathMetricsBase>(mb)
  38 {
  39         save_ = mb;
  40         switch (mb.style) {
  41                 case LM_ST_DISPLAY:
  42                 case LM_ST_TEXT:
  43                         mb.style = LM_ST_SCRIPT;
  44                         mb.font.decSize();
  45                         mb.font.decSize();
  46                         break;
  47                 case LM_ST_SCRIPT:
  48                         mb.style = LM_ST_SCRIPTSCRIPT;
  49                         mb.font.decSize();
  50                 default:
  51                         break;
  52         }
  53 }
  54
  55 MathScriptChanger::~MathScriptChanger()
  56 {
  57         orig_ = save_;
  58 }
  59
  60
  61
  62
  63 // decrease math size for fractions
  64 MathFracChanger::MathFracChanger(MathMetricsBase & mb)
  65         : MathChanger<MathMetricsBase>(mb)
  66 {
  67         save_ = mb;
  68         switch (mb.style) {
  69                 case LM_ST_DISPLAY:
  70                         mb.style = LM_ST_TEXT;
  71                         break;
  72                 case LM_ST_TEXT:
  73                         mb.style = LM_ST_SCRIPT;
  74                         mb.font.decSize();
  75                         mb.font.decSize();
  76                         break;
  77                 case LM_ST_SCRIPT:
  78                         mb.style = LM_ST_SCRIPTSCRIPT;
  79                         mb.font.decSize();
  80                         break;
  81                 default:
  82                         break;
  83         }
  84 }
  85
  86 MathFracChanger::~MathFracChanger()
  87 {
  88         orig_ = save_;
  89 }
  90
  91
  92
  93
  94 MathShapeChanger::MathShapeChanger(LyXFont & font, LyXFont::FONT_SHAPE shape)
  95         : MathChanger<LyXFont, LyXFont::FONT_SHAPE>(font)
  96 {
  97         save_ = orig_.shape();
  98         orig_.setShape(shape);
  99 }
 100
 101 MathShapeChanger::~MathShapeChanger()
 102 {
 103         orig_.setShape(save_);
 104 }
 105
 106
 107
 108
 109 void changeSize(LyXFont & font, int diff)
 110 {
 111         if (diff < 0) {
 112                 font.decSize();
 113                 changeSize(font, diff + 1);
 114         } else if (diff > 0) {
 115                 font.incSize();
 116                 changeSize(font, diff - 1);
 117         }
 118 }
 119
 120 MathStyleChanger::MathStyleChanger(MathMetricsBase & mb, MathStyles style)
 121         :       MathChanger<MathMetricsBase>(mb)
 122 {
 123         save_ = mb;
 124         changeSize(mb.font, mb.style - style);
 125 }
 126
 127
 128 MathStyleChanger::~MathStyleChanger()
 129 {
 130         orig_ = save_;
 131 }
 132
 133
 134
 135
 136 MathFontSetChanger::MathFontSetChanger(MathMetricsBase & mb, char const * name)
 137         :       MathChanger<MathMetricsBase>(mb)
 138 {
 139         save_ = mb;
 140         mb.fontname = name;
 141         augmentFont(mb.font, name);
 142 }
 143
 144 MathFontSetChanger::~MathFontSetChanger()
 145 {
 146         orig_ = save_;
 147 }
 148
 149
 150 MathWidthChanger::MathWidthChanger(MathMetricsBase & mb, int w)
 151         :       MathChanger<MathMetricsBase>(mb)
 152 {
 153         save_ = mb;
 154         mb.restrictwidth = true;
 155         mb.textwidth     = w;
 156 }
 157
 158
 159 MathWidthChanger::~MathWidthChanger()
 160 {
 161         orig_ = save_;
 162 }
 163