annotate src/changesetscene.cpp @ 401:c3276f8998ee

Ensure scene rect resizes to accommodate detail items

/* -*- 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 "changesetscene.h"
#include "changesetitem.h"
#include "uncommitteditem.h"
#include "debug.h"

#include <QPainter>


ChangesetScene::ChangesetScene()
    // Supply a non-NULL but trivial scene rect to inhibit automatic
    // updates from QGraphicsScene, because we will set the rect
    // explicitly in itemAddCompleted
    : QGraphicsScene(QRectF(0, 0, 1, 1)), m_detailShown(0)
{
}

void
ChangesetScene::addChangesetItem(ChangesetItem *item)
{
    addItem(item);

    connect(item, SIGNAL(detailShown()),
            this, SLOT(changesetDetailShown()));

    connect(item, SIGNAL(detailHidden()),
            this, SLOT(changesetDetailHidden()));

    connect(item, SIGNAL(updateTo(QString)),
            this, SIGNAL(updateTo(QString)));

    connect(item, SIGNAL(diffToCurrent(QString)),
            this, SIGNAL(diffToCurrent(QString)));

    connect(item, SIGNAL(diffToParent(QString, QString)),
            this, SIGNAL(diffToParent(QString, QString)));

    connect(item, SIGNAL(showSummary(Changeset *)),
            this, SIGNAL(showSummary(Changeset *)));

    connect(item, SIGNAL(mergeFrom(QString)),
            this, SIGNAL(mergeFrom(QString)));

    connect(item, SIGNAL(newBranch(QString)),
            this, SIGNAL(newBranch(QString)));

    connect(item, SIGNAL(tag(QString)),
            this, SIGNAL(tag(QString)));
}

void
ChangesetScene::addUncommittedItem(UncommittedItem *item)
{
    addItem(item);
    
    connect(item, SIGNAL(commit()),
            this, SIGNAL(commit()));
    
    connect(item, SIGNAL(revert()),
            this, SIGNAL(revert()));
    
    connect(item, SIGNAL(diff()),
            this, SIGNAL(diffWorkingFolder()));

    connect(item, SIGNAL(showSummary()),
            this, SIGNAL(showSummary()));

    connect(item, SIGNAL(showWork()),
            this, SIGNAL(showWork()));

    connect(item, SIGNAL(newBranch()),
            this, SIGNAL(newBranch()));

    connect(item, SIGNAL(noBranch()),
            this, SIGNAL(noBranch()));

}

void
ChangesetScene::addDateRange(QString label, int minrow, int nrows, bool even)
{
    DateRange dr;
    dr.label = label;
    dr.minrow = minrow;
    dr.nrows = nrows;
    dr.even = even;
    m_dateRanges[minrow] = dr;
}

void
ChangesetScene::itemAddCompleted()
{
    QRectF r = itemsBoundingRect();
    float minwidth = 300; //!!!
    DEBUG << "ChangesetScene::itemAddCompleted: minwidth = " << minwidth
          << ", r = " << r << endl;
    if (r.width() < minwidth) {
        float edgediff = (minwidth - r.width()) / 2;
        r.setLeft(r.left() - edgediff);
        r.setRight(r.right() + edgediff);
    }
    DEBUG << "ChangesetScene::itemAddCompleted: r now is " << r << endl;
    setSceneRect(r);
}

void
ChangesetScene::changesetDetailShown()
{
    ChangesetItem *csi = qobject_cast<ChangesetItem *>(sender());
    if (!csi) return;

    if (m_detailShown && m_detailShown != csi) {
	m_detailShown->hideDetail();
    }
    m_detailShown = csi;
    itemAddCompleted();
    csi->ensureVisible();
}

void
ChangesetScene::changesetDetailHidden()
{
    m_detailShown = 0;
    itemAddCompleted();
}

void
ChangesetScene::drawBackground(QPainter *paint, const QRectF &rect)
{
    QGraphicsScene::drawBackground(paint, rect);
}
        

ChangesetItem *
ChangesetScene::getItemById(QString id)
{
    foreach (QGraphicsItem *it, items()) {
        ChangesetItem *csit = dynamic_cast<ChangesetItem *>(it);
        if (csit && csit->getId() == id) return csit;
    }
    return 0;
}