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/****************************************************************************
**
** Copyright (C) 2006-2009 fullmetalcoder <fullmetalcoder@hotmail.fr>
**
** This file is part of the Edyuk project <http://edyuk.org>
**
** This file may be used under the terms of the GNU General Public License
** version 3 as published by the Free Software Foundation and appearing in the
** file GPL.txt included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include "qlinenumberpanel.h"
/*!
\file qlinenumberpanel.cpp
\brief Implementation of the QLineNumberPanel class
\see QLineNumberPanel
*/
#include "qeditor.h"
#include "qdocument.h"
#include "qdocument_p.h"
#include "qdocumentline.h"
/*!
\ingroup widgets
@{
*/
/*!
\class QLineNumberPanel
\brief A specific panel in charge of drawing line numbers of an editor
*/
QCE_AUTO_REGISTER(QLineNumberPanel)
/*!
\brief Constructor
*/
QLineNumberPanel::QLineNumberPanel(QWidget *p)
: QPanel(p), m_verbose(false)
{
setFixedWidth(20);
setObjectName("lineNumberPanel");
}
/*!
\brief Empty destructor
*/
QLineNumberPanel::~QLineNumberPanel()
{
}
/*!
*/
QString QLineNumberPanel::type() const
{
return "Line numbers";
}
/*!
*/
bool QLineNumberPanel::isVerboseMode() const
{
return m_verbose;
}
/*!
*/
void QLineNumberPanel::setVerboseMode(bool y)
{
m_verbose = y;
update();
}
void QLineNumberPanel::setFont_slot(const QFont &font)
{
setFont(font);
}
/*!
*/
void QLineNumberPanel::editorChange(QEditor *e)
{
if ( editor() )
{
disconnect( editor(), SIGNAL( cursorPositionChanged() ),
this , SLOT ( update() ) );
disconnect( editor()->document(), SIGNAL( fontChanged(QFont) ),
this , SLOT ( setFont_slot(QFont) ) );
}
if ( e )
{
setFixedWidth(fontMetrics().width(QString::number(e->document()->lines())) + 5);
connect(e , SIGNAL( cursorPositionChanged() ),
this, SLOT ( update() ) );
connect(e->document(), SIGNAL( fontChanged(QFont) ),
this, SLOT ( setFont_slot(QFont) ) );
}
}
/*!
*/
bool QLineNumberPanel::paint(QPainter *p, QEditor *e)
{
/*
possible Unicode caracter for wrapping arrow :
0x21B3
0x2937
*/
QFont f(font());
f.setWeight(QFont::Bold);
const QFontMetrics sfm(f);
bool specialFontUsage=false;
QFont specialFont(font());
#ifndef WIN32
static const QChar wrappingArrow(0x2937);
const QFontMetrics specialSfm(sfm);
#if QT_VERSION >= 0x050000 && defined Q_OS_MAC && (QT_VERSION < 0x050200)
if(!specialSfm.inFont(wrappingArrow)){
specialFontUsage=true;
specialFont.setFamily("Gothic Regular");
//specialSfm(specialFont);
}
#endif
#else
// 0xC4 gives a decent wrapping arrow in Wingdings fonts, availables on all windows systems
// this is a hackish fallback to workaround Windows issues with Unicode...
static const QChar wrappingArrow(0xC4);
specialFont.setFamily("Wingdings");
const QFontMetrics specialSfm(specialFont);
specialFontUsage=true;
#endif
int max = e->document()->lines();
if(max<100) max=100; // always reserve 3 line number columns to avoid ugly jumping of width
QString s_width=QString::number(max);
s_width.fill('6');
const int panelWidth = sfm.width(s_width) + 5;
setFixedWidth(panelWidth);
int n, posY,
as = QFontMetrics(e->document()->font()).ascent(),
ls = e->document()->getLineSpacing(),
pageBottom = e->viewport()->height(),
contentsY = e->verticalOffset();
QString txt;
QDocument *d = e->document();
const int cursorLine = e->cursor().lineNumber();
n = d->lineNumber(contentsY);
posY = as + 2 + d->y(n) - contentsY;
//qDebug("first = %i; last = %i", first, last);
//qDebug("beg pos : %i", posY);
for ( ; ; ++n )
{
//qDebug("n = %i; pos = %i", n, posY);
QDocumentLine line = d->line(n);
if ( line.isNull() || ((posY - as) > pageBottom) )
break;
if ( line.isHidden() )
continue;
bool draw = true;
if ( !m_verbose )
{
draw = !((n + 1) % 10) || !n || !line.marks().empty();
}
txt = QString::number(n + 1);
if ( n == cursorLine )
{
draw = true;
p->save();
QFont f = p->font();
f.setWeight(QFont::Bold);
p->setFont(f);
}
if ( draw )
{
p->drawText(width() - 2 - sfm.width(txt),
posY,
txt);
if(specialFontUsage){
if (line.lineSpan()>1) {
p->save();
specialFont.setBold(n == cursorLine); //todo: only get bold on the current wrapped line
p->setFont(specialFont);
}
}
for ( int i = 1; i < line.lineSpan(); ++i )
p->drawText(width() - 2 - specialSfm.width(wrappingArrow), posY + i * ls, wrappingArrow);
if(specialFontUsage){
if (line.lineSpan()>1)
p->restore();
}
} else {
int yOff = posY - (as + 1) + ls / 2;
if ( (n + 1) % 5 )
p->drawPoint(width() - 5, yOff);
else
p->drawLine(width() - 7, yOff, width() - 2, yOff);
}
if ( n == cursorLine )
{
p->restore();
}
posY += ls * line.lineSpan();
}
//p->setPen(Qt::DotLine);
//p->drawLine(width()-1, 0, width()-1, pageBottom);
//setFixedWidth(sfm.width(txt) + 5);
return true;
}
/*! @} */
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