lyx_mirror/src/MetricsInfo.cpp
Vincent van Ravesteijn f72455413f branch: move ColorSet to a header of its own to reduce #include dependencies. Patch by Andre.
see:
http://www.lyx.org/trac/changeset/28426.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_6_X@28841 a592a061-630c-0410-9148-cb99ea01b6c8
2009-03-17 13:23:54 +00:00

301 lines
6.1 KiB
C++

/**
* \file MetricsInfo.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author André Pönitz
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "BufferView.h"
#include "ColorSet.h"
#include "MetricsInfo.h"
#include "insets/Inset.h"
#include "mathed/MathSupport.h"
#include "frontends/Painter.h"
#include "support/docstring.h"
#include "support/lassert.h"
using namespace std;
namespace lyx {
/////////////////////////////////////////////////////////////////////////
//
// MetricsBase
//
/////////////////////////////////////////////////////////////////////////
MetricsBase::MetricsBase()
: bv(0), font(), style(LM_ST_TEXT), fontname("mathnormal"),
textwidth(0)
{}
MetricsBase::MetricsBase(BufferView * b, FontInfo const & f, int w)
: bv(b), font(f), style(LM_ST_TEXT), fontname("mathnormal"),
textwidth(w)
{}
/////////////////////////////////////////////////////////////////////////
//
// MetricsInfo
//
/////////////////////////////////////////////////////////////////////////
MetricsInfo::MetricsInfo(BufferView * bv, FontInfo const & font, int textwidth,
MacroContext const & mc)
: base(bv, font, textwidth), macrocontext(mc)
{}
/////////////////////////////////////////////////////////////////////////
//
// PainterInfo
//
/////////////////////////////////////////////////////////////////////////
PainterInfo::PainterInfo(BufferView * bv, lyx::frontend::Painter & painter)
: pain(painter), ltr_pos(false), erased_(false), selected(false),
full_repaint(true), background_color(Color_background)
{
base.bv = bv;
}
void PainterInfo::draw(int x, int y, char_type c)
{
pain.text(x, y, c, base.font);
}
void PainterInfo::draw(int x, int y, docstring const & str)
{
pain.text(x, y, str, base.font);
}
ColorCode PainterInfo::backgroundColor(Inset const * inset, bool sel) const
{
ColorCode const color_bg = inset->backgroundColor();
if (selected && sel)
// This inset is in a selection
return Color_selection;
else {
if (color_bg != Color_none)
// This inset has its own color
return color_bg;
else {
if (background_color == Color_none)
// This inset has no own color and does not inherit a color
return Color_background;
else
// This inset has no own color, but inherits a color
return background_color;
}
}
}
/////////////////////////////////////////////////////////////////////////
//
// ScriptChanger
//
/////////////////////////////////////////////////////////////////////////
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))
{}
/////////////////////////////////////////////////////////////////////////
//
// FracChanger
//
/////////////////////////////////////////////////////////////////////////
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::ArrayChanger(MetricsBase & mb)
: StyleChanger(mb, mb.style == LM_ST_DISPLAY ? LM_ST_TEXT : mb.style)
{}
/////////////////////////////////////////////////////////////////////////
//
// ShapeChanger
//
/////////////////////////////////////////////////////////////////////////
ShapeChanger::ShapeChanger(FontInfo & font, FontShape shape)
: Changer<FontInfo, FontShape>(font)
{
save_ = orig_.shape();
orig_.setShape(shape);
}
ShapeChanger::~ShapeChanger()
{
orig_.setShape(save_);
}
/////////////////////////////////////////////////////////////////////////
//
// StyleChanger
//
/////////////////////////////////////////////////////////////////////////
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::FontSetChanger(MetricsBase & mb, char const * name)
: Changer<MetricsBase>(mb)
{
save_ = mb;
FontSize oldsize = save_.font.size();
mb.fontname = name;
mb.font = sane_font;
augmentFont(mb.font, from_ascii(name));
mb.font.setSize(oldsize);
}
FontSetChanger::FontSetChanger(MetricsBase & mb, docstring const & name)
: Changer<MetricsBase>(mb)
{
save_ = mb;
FontSize oldsize = save_.font.size();
mb.fontname = to_utf8(name);
mb.font = sane_font;
augmentFont(mb.font, name);
mb.font.setSize(oldsize);
}
FontSetChanger::~FontSetChanger()
{
orig_ = save_;
}
/////////////////////////////////////////////////////////////////////////
//
// WidthChanger
//
/////////////////////////////////////////////////////////////////////////
WidthChanger::WidthChanger(MetricsBase & mb, int w)
: Changer<MetricsBase>(mb)
{
save_ = mb;
mb.textwidth = w;
}
WidthChanger::~WidthChanger()
{
orig_ = save_;
}
/////////////////////////////////////////////////////////////////////////
//
// ColorChanger
//
/////////////////////////////////////////////////////////////////////////
ColorChanger::ColorChanger(FontInfo & font, string const & color)
: Changer<FontInfo, string>(font)
{
save_ = lcolor.getFromLyXName(color);
font.setColor(lcolor.getFromLyXName(color));
}
ColorChanger::~ColorChanger()
{
orig_.setColor(lcolor.getFromLyXName(save_));
}
} // namespace lyx