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/* -*- c-file-style: "xxdiff" -*- */
/******************************************************************************\
* $RCSfile$
*
* Copyright (C) 1999-2003 Martin Blais <blais@furius.ca>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
******************************************************************************/
/*==============================================================================
* EXTERNAL DECLARATIONS
*============================================================================*/
#include <lineNumbers.h>
#include <app.h>
#include <central.h>
#include <resources.h>
#include <diffs.h>
#include <buffer.h>
#include <text.h>
#include <QPainter>
#include <QBrush>
#include <QPen>
#include <QColor>
#include <QApplication>
#include <QClipboard>
#include <QFrame>
#include <math.h>
#include <stdio.h>
XX_NAMESPACE_BEGIN
/*==============================================================================
* PUBLIC FUNCTIONS
*============================================================================*/
/*==============================================================================
* CLASS XxLineNumbers
*============================================================================*/
//------------------------------------------------------------------------------
//
XxLineNumbers::XxLineNumbers(
XxApp* app,
XxCentralFrame* central,
const XxFno no,
QWidget* parent
) :
QFrame( parent ),
_app( app ),
_central( central ),
_no( no )
{
// Frame borders must be set equal to the one in XxText for proper vertical
// alignment of text.
setSizePolicy(
QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding )
);
}
//------------------------------------------------------------------------------
//
XxLineNumbers::~XxLineNumbers()
{
}
//------------------------------------------------------------------------------
//
void XxLineNumbers::paintEvent( QPaintEvent *e )
{
//XX_TRACE( "painting!" );
QFrame::paintEvent(e);
QPainter p( this );
QRect rect = contentsRect();
// We want 1:1 pixel/coord ratio.
p.setViewport( rect );
rect.translate( -rect.x(), -rect.y() );
p.setWindow( rect );
//#define BACK_COLORING
#ifdef BACK_COLORING
const int w = rect.width();
#endif
const XxResources& resources = _app->getResources();
XxBuffer* file = _app->getBuffer( _no );
const XxDiffs* diffs = _app->getDiffs();
if ( diffs == 0 ) {
return;
}
//
// Draw appropriate content.
//
uint topLine = _central->getTopLine();
// Font.
p.setFont( resources.getFontText() );
QFontMetrics fm = p.fontMetrics();
QPen pen;
uint displayLines = _central->getNbDisplayLines();
int nbLines = std::min( displayLines, diffs->getNbLines() - (topLine - 1) );
QString lnFormat;
QTextStream(&lnFormat) << "%" << _app->getMaxDigits() << "d";
p.setPen( palette().color( backgroundRole() ).darker( 200 ) );
const int x = 0;
int y = 0;
for ( int ii = 0; ii < nbLines; ++ii, y += XxText::lineHeight(fm) ) {
// Get line to display.
const XxLine& line = diffs->getLine( topLine + ii );
// This is ugly. I prefer line numbers without back coloring, it makes it
// less confusing for actual file text. Keep for reference only.
#ifdef BACK_COLORING
// Set background and foreground colors.
QColor bcolor;
QColor fcolor;
XxColor dtype, dtypeSup;
line.getLineColorType(
resources.getIgnoreFile(),
_no,
dtype, dtypeSup, false
);
resources.getRegionColor( dtype, bcolor, fcolor );
QBrush brush( bcolor );
p.fillRect( x, y, w, XxText::lineHeight(fm), brush );
#endif
// Render text.
XxFln fline = line.getLineNo( _no );
if ( fline != -1 ) {
XxFln dfline = file->getDisplayLineNo( fline );
// Note: this allocates a new QString per line on render on screetn. We
// could probably do away with the allocation, but we'd have to use a
// non-Qt unicode renderer (not asprintf()).
QString renderedNums =
file->renderLineNumber( dfline, lnFormat );
p.drawText( x+2, y + fm.ascent(), renderedNums );
}
}
p.setPen( palette().color( backgroundRole() ).darker( 135 ) );
p.drawLine( rect.topRight(), rect.bottomRight() );
// Draw line cursor.
if ( !resources.getBoolOpt( BOOL_DISABLE_CURSOR_DISPLAY ) ) {
XxDln cursorLine = _app->getCursorLine() - topLine;
if ( cursorLine >= 0 && cursorLine < nbLines ) {
int cursorY1 = cursorLine * XxText::lineHeight(fm);
int cursorY2 = cursorY1 + XxText::lineHeight(fm);
QColor cursorColor = resources.getColor( COLOR_CURSOR );
int w = rect.width();
p.setPen( cursorColor );
p.drawLine( 0, cursorY1 , w, cursorY1 );
p.drawLine( 0, cursorY2 , w, cursorY2 );
cursorColor.setAlpha(64);
p.fillRect( 0, cursorY1 + 1 , w, cursorY2 - cursorY1 - 1, cursorColor );
}
}
}
XX_NAMESPACE_END
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