Chris@57: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@46: 
Chris@57: /*
Chris@57:     EasyMercurial
Chris@57: 
Chris@57:     Based on HgExplorer by Jari Korhonen
Chris@57:     Copyright (c) 2010 Jari Korhonen
Chris@57:     Copyright (c) 2010 Chris Cannam
Chris@57:     Copyright (c) 2010 Queen Mary, University of London
Chris@57:     
Chris@57:     This program is free software; you can redistribute it and/or
Chris@57:     modify it under the terms of the GNU General Public License as
Chris@57:     published by the Free Software Foundation; either version 2 of the
Chris@57:     License, or (at your option) any later version.  See the file
Chris@57:     COPYING included with this distribution for more information.
Chris@57: */
Chris@46: 
Chris@46: #include "connectionitem.h"
Chris@46: 
Chris@46: #include "changesetitem.h"
Chris@53: #include "changeset.h"
Chris@53: #include "colourset.h"
Chris@46: 
Chris@46: #include <QPainter>
Chris@46: 
Chris@46: QRectF
Chris@46: ConnectionItem::boundingRect() const
Chris@46: {
Chris@46:     if (!m_parent || !m_child) return QRectF();
Chris@53:     float xscale = 100;
Chris@53:     float yscale = 90;
Chris@46:     float size = 50;
Chris@53:     return QRectF(xscale * m_child->column() + size/2 - 2,
Chris@53: 		  yscale * m_child->row() + size - 2,
Chris@53: 		  xscale * m_parent->column() - xscale * m_child->column() + 4,
Chris@53: 		  yscale * m_parent->row() - yscale * m_child->row() - size + 4)
Chris@46: 	.normalized();
Chris@46: }
Chris@46: 
Chris@46: void
Chris@46: ConnectionItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
Chris@46: {
Chris@46:     QPainterPath p;
Chris@53: 
Chris@53:     paint->save();
Chris@53: 
Chris@53:     ColourSet *colourSet = ColourSet::instance();
Chris@53:     QColor branchColour = colourSet->getColourFor(m_child->getChangeset()->branch());
Chris@54: 
Chris@54:     QTransform t = paint->worldTransform();
Chris@54:     float scale = std::min(t.m11(), t.m22());
Chris@54:     if (scale < 0.1) {
Chris@54: 	paint->setPen(QPen(branchColour, 0));
Chris@54:     } else {
Chris@54: 	paint->setPen(QPen(branchColour, 2));
Chris@54:     }
Chris@53: 
Chris@53:     float xscale = 100;
Chris@53: 
Chris@53:     float yscale = 90;
Chris@46:     float size = 50;
Chris@53:     float ygap = yscale - size;
Chris@53: 
Chris@53:     int c_col = m_child->column(), c_row = m_child->row();
Chris@53:     int p_col = m_parent->column(), p_row = m_parent->row();
Chris@53: 
Chris@53:     float c_x = xscale * c_col + size/2;
Chris@53:     float p_x = xscale * p_col + size/2;
Chris@53: 
Chris@53:     p.moveTo(c_x, yscale * c_row + size);
Chris@53: 
Chris@53:     if (p_col == c_col) {
Chris@53: 
Chris@53: 	p.lineTo(p_x, yscale * p_row);
Chris@53: 
Chris@53:     } else if (m_type == Split || m_type == Normal) {
Chris@53: 
Chris@53: 	// place the bulk of the line on the child (i.e. branch) row
Chris@53: 
Chris@53: 	if (abs(p_row - c_row) > 1) {
Chris@53: 	    p.lineTo(c_x, yscale * p_row - ygap);
Chris@53: 	}
Chris@53: 
Chris@53: 	p.cubicTo(c_x, yscale * p_row,
Chris@53: 		  p_x, yscale * p_row - ygap,
Chris@53: 		  p_x, yscale * p_row);
Chris@53: 
Chris@53:     } else if (m_type == Merge) {
Chris@53: 
Chris@53: 	// place bulk of the line on the parent row
Chris@53: 
Chris@53: 	p.cubicTo(c_x, yscale * c_row + size + ygap,
Chris@53: 		  p_x, yscale * c_row + size,
Chris@53: 		  p_x, yscale * c_row + size + ygap);
Chris@53: 
Chris@53: 	if (abs(p_row - c_row) > 1) {
Chris@53: 	    p.lineTo(p_x, yscale * p_row);
Chris@46: 	}
Chris@46:     }
Chris@53: 
Chris@46:     paint->drawPath(p);
Chris@53:     paint->restore();
Chris@46: }
Chris@46: 
Chris@46: