comparison historywidget.cpp @ 116:807c79350bf1

* Pull history tab out into its own widget

+/* -*- 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) 2010 Chris Cannam
+    Copyright (c) 2010 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 "historywidget.h"
+
+#include "panned.h"
+#include "panner.h"
+#include "grapher.h"
+#include "debug.h"
+
+#include <iostream>
+
+#include <QGridLayout>
+
+HistoryWidget::HistoryWidget()
+{
+    m_panned = new Panned;
+    m_panner = new Panner;
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(m_panned, 0, 0);
+    layout->addWidget(m_panner, 0, 1);
+    m_panner->setMaximumWidth(80);
+    m_panner->connectToPanned(m_panned);
+
+    setLayout(layout);
+}
+
+HistoryWidget::~HistoryWidget()
+{
+    clearChangesets();
+}
+
+void HistoryWidget::clearChangesets()
+{
+    foreach (Changeset *cs, m_changesets) delete cs;
+    m_changesets.clear();
+}
+    
+void HistoryWidget::parseLog(QString log)
+{
+    QGraphicsScene *scene = new QGraphicsScene();
+    Changesets csets = parseChangeSets(log);
+    ChangesetItem *tipItem = 0;
+
+    if (!csets.empty()) {
+	Grapher g(scene);
+	try {
+	    g.layout(csets);
+	} catch (std::string s) {
+	    std::cerr << "Internal error: Layout failed: " << s << std::endl;
+	}
+	tipItem = g.getItemFor(csets[0]);
+    }
+
+    QGraphicsScene *oldScene = m_panned->scene();
+    m_panned->setScene(scene);
+    m_panner->setScene(scene);
+
+    if (oldScene) delete oldScene;
+    clearChangesets();
+
+    m_changesets = csets;
+
+    if (tipItem) tipItem->ensureVisible();
+}
+
+Changesets HistoryWidget::parseChangeSets(QString changeSetsStr)
+{
+    Changesets csets = Changeset::parseChangesets(changeSetsStr);
+    for (int i = 0; i+1 < csets.size(); ++i) {
+        Changeset *cs = csets[i];
+        if (cs->parents().empty()) {
+            QStringList list;
+            list.push_back(csets[i+1]->id());
+            cs->setParents(list);
+        }
+    }
+    return csets;
+}