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6b96abd211
For a displayed equation, the height is artificially increased by a displayMargin() in InsetMathHull::metrics if it is a displayed equation and there is a preview. This extra height is not covered by the preview image and what one can see is the background as drawn by the MathHull inset. The color of this background should be either Color_mathbg or Color_background depending on whether the preview is shown or not. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32560 a592a061-630c-0410-9148-cb99ea01b6c8
301 lines
6.1 KiB
C++
301 lines
6.1 KiB
C++
/**
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* \file MetricsInfo.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author André Pönitz
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "BufferView.h"
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#include "ColorSet.h"
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#include "MetricsInfo.h"
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#include "insets/Inset.h"
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#include "mathed/MathSupport.h"
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#include "frontends/Painter.h"
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#include "support/docstring.h"
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#include "support/lassert.h"
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using namespace std;
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namespace lyx {
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/////////////////////////////////////////////////////////////////////////
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//
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// MetricsBase
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//
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/////////////////////////////////////////////////////////////////////////
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MetricsBase::MetricsBase()
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: bv(0), font(), style(LM_ST_TEXT), fontname("mathnormal"),
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textwidth(0)
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{}
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MetricsBase::MetricsBase(BufferView * b, FontInfo const & f, int w)
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: bv(b), font(f), style(LM_ST_TEXT), fontname("mathnormal"),
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textwidth(w)
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{}
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/////////////////////////////////////////////////////////////////////////
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//
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// MetricsInfo
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//
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/////////////////////////////////////////////////////////////////////////
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MetricsInfo::MetricsInfo(BufferView * bv, FontInfo const & font, int textwidth,
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MacroContext const & mc)
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: base(bv, font, textwidth), macrocontext(mc)
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{}
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/////////////////////////////////////////////////////////////////////////
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//
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// PainterInfo
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//
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/////////////////////////////////////////////////////////////////////////
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PainterInfo::PainterInfo(BufferView * bv, lyx::frontend::Painter & painter)
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: pain(painter), ltr_pos(false), change_(), selected(false),
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full_repaint(true), background_color(Color_background)
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{
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base.bv = bv;
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}
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void PainterInfo::draw(int x, int y, char_type c)
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{
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pain.text(x, y, c, base.font);
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}
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void PainterInfo::draw(int x, int y, docstring const & str)
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{
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pain.text(x, y, str, base.font);
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}
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ColorCode PainterInfo::backgroundColor(Inset const * inset, bool sel) const
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{
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ColorCode const color_bg = inset->backgroundColor(*this);
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if (selected && sel)
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// This inset is in a selection
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return Color_selection;
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else {
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if (color_bg != Color_none)
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// This inset has its own color
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return color_bg;
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else {
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if (background_color == Color_none)
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// This inset has no own color and does not inherit a color
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return Color_background;
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else
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// This inset has no own color, but inherits a color
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return background_color;
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}
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}
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}
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/////////////////////////////////////////////////////////////////////////
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//
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// ScriptChanger
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//
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/////////////////////////////////////////////////////////////////////////
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Styles smallerScriptStyle(Styles st)
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{
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switch (st) {
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case LM_ST_DISPLAY:
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case LM_ST_TEXT:
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return LM_ST_SCRIPT;
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case LM_ST_SCRIPT:
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case LM_ST_SCRIPTSCRIPT:
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default: // shut up compiler
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return LM_ST_SCRIPTSCRIPT;
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}
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}
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ScriptChanger::ScriptChanger(MetricsBase & mb)
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: StyleChanger(mb, smallerScriptStyle(mb.style))
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{}
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/////////////////////////////////////////////////////////////////////////
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//
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// FracChanger
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//
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/////////////////////////////////////////////////////////////////////////
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Styles smallerFracStyle(Styles st)
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{
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switch (st) {
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case LM_ST_DISPLAY:
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return LM_ST_TEXT;
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case LM_ST_TEXT:
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return LM_ST_SCRIPT;
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case LM_ST_SCRIPT:
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case LM_ST_SCRIPTSCRIPT:
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default: // shut up compiler
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return LM_ST_SCRIPTSCRIPT;
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}
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}
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FracChanger::FracChanger(MetricsBase & mb)
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: StyleChanger(mb, smallerFracStyle(mb.style))
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{}
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/////////////////////////////////////////////////////////////////////////
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//
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// ArrayChanger
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//
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/////////////////////////////////////////////////////////////////////////
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ArrayChanger::ArrayChanger(MetricsBase & mb)
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: StyleChanger(mb, mb.style == LM_ST_DISPLAY ? LM_ST_TEXT : mb.style)
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{}
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/////////////////////////////////////////////////////////////////////////
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//
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// ShapeChanger
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//
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/////////////////////////////////////////////////////////////////////////
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ShapeChanger::ShapeChanger(FontInfo & font, FontShape shape)
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: Changer<FontInfo, FontShape>(font)
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{
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save_ = orig_.shape();
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orig_.setShape(shape);
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}
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ShapeChanger::~ShapeChanger()
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{
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orig_.setShape(save_);
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}
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/////////////////////////////////////////////////////////////////////////
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//
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// StyleChanger
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//
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/////////////////////////////////////////////////////////////////////////
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StyleChanger::StyleChanger(MetricsBase & mb, Styles style)
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: Changer<MetricsBase>(mb)
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{
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static const int diff[4][4] =
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{ { 0, 0, -3, -5 },
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{ 0, 0, -3, -5 },
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{ 3, 3, 0, -2 },
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{ 5, 5, 2, 0 } };
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save_ = mb;
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int t = diff[mb.style][style];
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if (t > 0)
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while (t--)
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mb.font.incSize();
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else
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while (t++)
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mb.font.decSize();
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mb.style = style;
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}
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StyleChanger::~StyleChanger()
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{
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orig_ = save_;
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}
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/////////////////////////////////////////////////////////////////////////
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//
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// FontSetChanger
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//
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/////////////////////////////////////////////////////////////////////////
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FontSetChanger::FontSetChanger(MetricsBase & mb, char const * name)
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: Changer<MetricsBase>(mb)
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{
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save_ = mb;
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FontSize oldsize = save_.font.size();
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mb.fontname = name;
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mb.font = sane_font;
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augmentFont(mb.font, from_ascii(name));
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mb.font.setSize(oldsize);
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}
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FontSetChanger::FontSetChanger(MetricsBase & mb, docstring const & name)
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: Changer<MetricsBase>(mb)
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{
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save_ = mb;
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FontSize oldsize = save_.font.size();
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mb.fontname = to_utf8(name);
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mb.font = sane_font;
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augmentFont(mb.font, name);
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mb.font.setSize(oldsize);
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}
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FontSetChanger::~FontSetChanger()
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{
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orig_ = save_;
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}
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/////////////////////////////////////////////////////////////////////////
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//
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// WidthChanger
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//
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/////////////////////////////////////////////////////////////////////////
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WidthChanger::WidthChanger(MetricsBase & mb, int w)
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: Changer<MetricsBase>(mb)
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{
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save_ = mb;
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mb.textwidth = w;
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}
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WidthChanger::~WidthChanger()
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{
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orig_ = save_;
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}
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/////////////////////////////////////////////////////////////////////////
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//
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// ColorChanger
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//
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/////////////////////////////////////////////////////////////////////////
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ColorChanger::ColorChanger(FontInfo & font, string const & color)
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: Changer<FontInfo, string>(font)
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{
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save_ = lcolor.getFromLyXName(color);
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font.setColor(lcolor.getFromLyXName(color));
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}
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ColorChanger::~ColorChanger()
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{
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orig_.setColor(lcolor.getFromLyXName(save_));
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}
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} // namespace lyx
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