annotate src/connectionitem.cpp @ 425:ad106f5fe75f

Add "Ignore Files" and "Edit Ignored List" to Work menu (latter is subsumed from Advanced menu formerly).  Also subsume Serve via HTTP into File menu as Share Repository, and add a more helpful description of it. Remove Advanced menu

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    EasyMercurial

    Based on HgExplorer by Jari Korhonen
    Copyright (c) 2010 Jari Korhonen
    Copyright (c) 2011 Chris Cannam
    Copyright (c) 2011 Queen Mary, University of London
    
    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.  See the file
    COPYING included with this distribution for more information.
*/

#include "connectionitem.h"
#include "uncommitteditem.h"

#include "changesetitem.h"
#include "changeset.h"
#include "colourset.h"

#include <QPainter>

QRectF
ConnectionItem::boundingRect() const
{
    if (!m_parent || !(m_child || m_uncommitted)) return QRectF();
    float xscale = 100;
    float yscale = 90;
    float size = 50;

    int p_col = m_parent->column(), p_row = m_parent->row();
    int c_col, c_row;
    if (m_child) {
        c_col = m_child->column(); c_row = m_child->row();
    } else {
        c_col = m_uncommitted->column(); c_row = m_uncommitted->row();
    }

    return QRectF(xscale * c_col + size/2 - 2,
		  yscale * c_row + size - 22,
		  xscale * p_col - xscale * c_col + 6,
		  yscale * p_row - yscale * c_row - size + 44)
	.normalized();
}

void
ConnectionItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
{
    if (!m_parent || !(m_child || m_uncommitted)) return;
    QPainterPath p;

    paint->save();

    ColourSet *colourSet = ColourSet::instance();
    QString branch;
    if (m_child) branch = m_child->getChangeset()->branch();
    else branch = m_uncommitted->branch();
    QColor branchColour = colourSet->getColourFor(branch);

    Qt::PenStyle ls = Qt::SolidLine;
    if (!m_child) ls = Qt::DashLine;

    QTransform t = paint->worldTransform();
    float scale = std::min(t.m11(), t.m22());
    if (scale < 0.2) {
	paint->setPen(QPen(branchColour, 0, ls));
    } else {
	paint->setPen(QPen(branchColour, 2, ls));
    }

    float xscale = 100;

    float yscale = 90;
    float size = 50;
    float ygap = yscale - size - 2;

    int p_col = m_parent->column(), p_row = m_parent->row();
    int c_col, c_row;
    if (m_child) {
        c_col = m_child->column(); c_row = m_child->row();
    } else {
        c_col = m_uncommitted->column(); c_row = m_uncommitted->row();
    }

    float c_x = xscale * c_col + size/2;
    float p_x = xscale * p_col + size/2;

    // ensure line reaches the box, even if it's in a small height --
    // doesn't matter if we overshoot as the box is opaque and has a
    // greater Z value
    p.moveTo(c_x, yscale * c_row + size - 20);

    p.lineTo(c_x, yscale * c_row + size);

    if (p_col == c_col) {

	p.lineTo(p_x, yscale * p_row);

    } else if (m_type == Split || m_type == Normal) {

	// place the bulk of the line on the child (i.e. branch) row

	if (abs(p_row - c_row) > 1) {
	    p.lineTo(c_x, yscale * p_row - ygap);
	}

	p.cubicTo(c_x, yscale * p_row,
		  p_x, yscale * p_row - ygap,
		  p_x, yscale * p_row);

    } else if (m_type == Merge) {

	// place bulk of the line on the parent row

	p.cubicTo(c_x, yscale * c_row + size + ygap,
		  p_x, yscale * c_row + size,
		  p_x, yscale * c_row + size + ygap);

	if (abs(p_row - c_row) > 1) {
	    p.lineTo(p_x, yscale * p_row);
	}
    }

    // ensure line reaches the node -- again doesn't matter if we
    // overshoot
    p.lineTo(p_x, yscale * p_row + 20);

    paint->drawPath(p);
    paint->restore();
}