lyx_mirror/src/metricsinfo.C
André Pönitz 38fce2feac Prepare mathed for unified two-stage drawing
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7059 a592a061-630c-0410-9148-cb99ea01b6c8
2003-05-28 13:22:36 +00:00

151 lines
2.3 KiB
C

#include <config.h>
#include "metricsinfo.h"
#include "mathed/math_support.h"
#include "frontends/Painter.h"
#include "debug.h"
#include "BufferView.h"
MetricsBase::MetricsBase()
: bv(0), font(), style(LM_ST_TEXT), fontname("mathnormal"),
restrictwidth(false), textwidth(0)
{}
MetricsInfo::MetricsInfo()
{}
PainterInfo::PainterInfo(BufferView * bv)
: pain(bv->painter())
{
base.bv = bv;
}
void PainterInfo::draw(int x, int y, char c)
{
pain.text(x, y, c, base.font);
}
Styles smallerScriptStyle(Styles st)
{
switch (st) {
case LM_ST_DISPLAY:
case LM_ST_TEXT:
return LM_ST_SCRIPT;
case LM_ST_SCRIPT:
case LM_ST_SCRIPTSCRIPT:
default: // shut up compiler
return LM_ST_SCRIPTSCRIPT;
}
}
ScriptChanger::ScriptChanger(MetricsBase & mb)
: StyleChanger(mb, smallerScriptStyle(mb.style))
{}
Styles smallerFracStyle(Styles 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:
default: // shut up compiler
return LM_ST_SCRIPTSCRIPT;
}
}
FracChanger::FracChanger(MetricsBase & mb)
: StyleChanger(mb, smallerFracStyle(mb.style))
{}
ArrayChanger::ArrayChanger(MetricsBase & mb)
: StyleChanger(mb, mb.style == LM_ST_DISPLAY ? LM_ST_TEXT : mb.style)
{}
ShapeChanger::ShapeChanger(LyXFont & font, LyXFont::FONT_SHAPE shape)
: Changer<LyXFont, LyXFont::FONT_SHAPE>(font)
{
save_ = orig_.shape();
orig_.setShape(shape);
}
ShapeChanger::~ShapeChanger()
{
orig_.setShape(save_);
}
StyleChanger::StyleChanger(MetricsBase & mb, Styles style)
: Changer<MetricsBase>(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;
}
StyleChanger::~StyleChanger()
{
orig_ = save_;
}
FontSetChanger::FontSetChanger(MetricsBase & mb, char const * name)
: Changer<MetricsBase>(mb)
{
save_ = mb;
mb.fontname = name;
augmentFont(mb.font, name);
}
FontSetChanger::~FontSetChanger()
{
orig_ = save_;
}
WidthChanger::WidthChanger(MetricsBase & mb, int w)
: Changer<MetricsBase>(mb)
{
save_ = mb;
mb.restrictwidth = true;
mb.textwidth = w;
}
WidthChanger::~WidthChanger()
{
orig_ = save_;
}