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/*
* Copyright (C) 2011, 2012 Nicolas Bonnefon and other contributors
*
* This file is part of glogg.
*
* glogg 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 3 of the License, or
* (at your option) any later version.
*
* glogg 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 glogg. If not, see <http://www.gnu.org/licenses/>.
*/
// This file implements OverviewWidget. This class is responsable for
// managing and painting the matches overview widget.
#include <QPainter>
#include <QMouseEvent>
#include <cassert>
#include "log.h"
#include "overviewwidget.h"
#include "overview.h"
// Graphic parameters
const int OverviewWidget::LINE_MARGIN = 4;
OverviewWidget::OverviewWidget( QWidget* parent ) : QWidget( parent )
{
overview_ = NULL;
setBackgroundRole( QPalette::Window );
// We should be hidden by default (e.g. for the FilteredView)
hide();
}
void OverviewWidget::paintEvent( QPaintEvent* paintEvent )
{
LOG(logDEBUG) << "OverviewWidget::paintEvent";
static const QColor match_color("red");
static const QColor mark_color("dodgerblue");
// We must be hidden until we have an Overview
assert( overview_ != NULL );
overview_->updateView( height() );
{
QPainter painter( this );
// The line separating from the main view
painter.setPen( palette().color(QPalette::Text) );
painter.drawLine( 0, 0, 0, height() );
// The 'match' lines
painter.setPen( match_color );
foreach (Overview::WeightedLine line, *(overview_->getMatchLines()) ) {
painter.setOpacity( ( 1.0 / Overview::WeightedLine::WEIGHT_STEPS )
* ( line.weight() + 1 ) );
// (allow multiple matches to look 'darker' than a single one.)
painter.drawLine( 1 + LINE_MARGIN,
line.position(), width() - LINE_MARGIN - 1, line.position() );
}
// The 'mark' lines
painter.setPen( mark_color );
foreach (Overview::WeightedLine line, *(overview_->getMarkLines()) ) {
painter.setOpacity( ( 1.0 / Overview::WeightedLine::WEIGHT_STEPS )
* ( line.weight() + 1 ) );
// (allow multiple matches to look 'darker' than a single one.)
painter.drawLine( 1 + LINE_MARGIN,
line.position(), width() - LINE_MARGIN - 1, line.position() );
}
// The 'view' lines
painter.setOpacity( 1 );
painter.setPen( palette().color(QPalette::Text) );
std::pair<int,int> view_lines = overview_->getViewLines();
painter.drawLine( 1, view_lines.first, width(), view_lines.first );
painter.drawLine( 1, view_lines.second, width(), view_lines.second );
}
}
void OverviewWidget::mousePressEvent( QMouseEvent* mouseEvent )
{
if ( mouseEvent->button() == Qt::LeftButton )
handleMousePress( mouseEvent->y() );
}
void OverviewWidget::mouseMoveEvent( QMouseEvent* mouseEvent )
{
if ( mouseEvent->buttons() |= Qt::LeftButton )
handleMousePress( mouseEvent->y() );
}
void OverviewWidget::handleMousePress( int position )
{
int line = overview_->fileLineFromY( position );
LOG(logDEBUG) << "OverviewWidget::handleMousePress y=" << position << " line=" << line;
emit lineClicked( line );
}
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