diff src/historywidget.cpp @ 370:b9c153e00e84

Move source files to src/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/historywidget.cpp	Thu Mar 24 10:27:51 2011 +0000
@@ -0,0 +1,298 @@
+/* -*- 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 "historywidget.h"
+
+#include "changesetscene.h"
+#include "panned.h"
+#include "panner.h"
+#include "grapher.h"
+#include "debug.h"
+#include "uncommitteditem.h"
+
+#include <iostream>
+
+#include <QGridLayout>
+
+HistoryWidget::HistoryWidget() :
+    m_showUncommitted(false),
+    m_refreshNeeded(false)
+{
+    m_panned = new Panned;
+    m_panner = new Panner;
+
+    m_panned->setDragMode(QGraphicsView::ScrollHandDrag);
+    m_panned->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
+
+    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();
+}
+
+QGraphicsScene *HistoryWidget::scene()
+{
+    return m_panned->scene();
+}
+
+void HistoryWidget::clearChangesets()
+{
+    foreach (Changeset *cs, m_changesets) delete cs;
+    m_changesets.clear();
+}
+
+void HistoryWidget::setCurrent(QStringList ids, QString branch,
+                               bool showUncommitted)
+{
+    if (m_currentIds == ids &&
+        m_currentBranch == branch &&
+        m_showUncommitted == showUncommitted) return;
+
+    DEBUG << "HistoryWidget::setCurrent: " << ids.size() << " ids, "
+          << "showUncommitted: " << showUncommitted << endl;
+
+    m_currentIds.clear();
+    m_currentBranch = branch;
+    m_showUncommitted = showUncommitted;
+
+    if (ids.empty()) return;
+
+    foreach (QString id, ids) {
+        m_currentIds.push_back(id);
+    }
+
+    m_refreshNeeded = true;
+}
+    
+void HistoryWidget::parseNewLog(QString log)
+{
+    DEBUG << "HistoryWidget::parseNewLog: log has " << log.length() << " chars" << endl;
+    Changesets csets = Changeset::parseChangesets(log);
+    DEBUG << "HistoryWidget::parseNewLog: log has " << csets.size() << " changesets" << endl;
+    replaceChangesets(csets);
+    m_refreshNeeded = true;
+}
+    
+void HistoryWidget::parseIncrementalLog(QString log)
+{
+    DEBUG << "HistoryWidget::parseIncrementalLog: log has " << log.length() << " chars" << endl;
+    Changesets csets = Changeset::parseChangesets(log);
+    DEBUG << "HistoryWidget::parseIncrementalLog: log has " << csets.size() << " changesets" << endl;
+    if (!csets.empty()) {
+        addChangesets(csets);
+    }
+    m_refreshNeeded = true;
+}
+
+void HistoryWidget::replaceChangesets(Changesets csets)
+{
+    QSet<QString> oldIds;
+    foreach (Changeset *cs, m_changesets) {
+        oldIds.insert(cs->id());
+    }
+
+    QSet<QString> newIds;
+    foreach (Changeset *cs, csets) {
+        if (!oldIds.contains(cs->id())) {
+            newIds.insert(cs->id());
+        }
+    }
+
+    if (newIds.size() == csets.size()) {
+        // completely new set, unrelated to the old: don't mark new
+        m_newIds.clear();
+    } else {
+        m_newIds = newIds;
+    }
+
+    clearChangesets();
+    m_changesets = csets;
+}
+
+void HistoryWidget::addChangesets(Changesets csets)
+{
+    m_newIds.clear();
+
+    if (csets.empty()) return;
+
+    foreach (Changeset *cs, csets) {
+        m_newIds.insert(cs->id());
+    }
+
+    DEBUG << "addChangesets: " << csets.size() << " new changesets have ("
+          << m_changesets.size() << " already)" << endl;
+
+    csets << m_changesets;
+    m_changesets = csets;
+}
+
+void HistoryWidget::update()
+{
+    if (m_refreshNeeded) {
+        layoutAll();
+    }
+}
+
+void HistoryWidget::layoutAll()
+{
+    m_refreshNeeded = false;
+
+    setChangesetParents();
+
+    ChangesetScene *scene = new ChangesetScene();
+    ChangesetItem *tipItem = 0;
+
+    QGraphicsScene *oldScene = m_panned->scene();
+
+    m_panned->setScene(0);
+    m_panner->setScene(0);
+
+    delete oldScene;
+
+    QGraphicsItem *toFocus = 0;
+
+    if (!m_changesets.empty()) {
+	Grapher g(scene);
+	try {
+	    g.layout(m_changesets,
+                     m_showUncommitted ? m_currentIds : QStringList(),
+                     m_currentBranch);
+	} catch (std::string s) {
+	    std::cerr << "Internal error: Layout failed: " << s << std::endl;
+	}
+        toFocus = g.getUncommittedItem();
+        if (!toFocus) {
+            toFocus = g.getItemFor(m_changesets[0]);
+        }
+    }
+
+    m_panned->setScene(scene);
+    m_panner->setScene(scene);
+
+    updateNewAndCurrentItems();
+
+    if (toFocus) {
+        toFocus->ensureVisible();
+    }
+
+    connectSceneSignals();
+}
+
+void HistoryWidget::setChangesetParents()
+{
+    for (int i = 0; i < m_changesets.size(); ++i) {
+        Changeset *cs = m_changesets[i];
+        // Need to reset this, as Grapher::layout will recalculate it
+        // and we don't want to end up with twice the children for
+        // each parent...
+        cs->setChildren(QStringList());
+    }
+    for (int i = 0; i+1 < m_changesets.size(); ++i) {
+        Changeset *cs = m_changesets[i];
+        if (cs->parents().empty()) {
+            QStringList list;
+            list.push_back(m_changesets[i+1]->id());
+            cs->setParents(list);
+        }
+    }
+}
+
+void HistoryWidget::updateNewAndCurrentItems()
+{
+    QGraphicsScene *scene = m_panned->scene();
+    if (!scene) return;
+
+    QList<QGraphicsItem *> items = scene->items();
+    foreach (QGraphicsItem *it, items) {
+
+        ChangesetItem *csit = dynamic_cast<ChangesetItem *>(it);
+        if (!csit) continue;
+
+        QString id = csit->getChangeset()->id();
+
+        bool current = m_currentIds.contains(id);
+        if (current) {
+            DEBUG << "id " << id << " is current" << endl;
+        }
+        bool newid = m_newIds.contains(id);
+        if (newid) {
+            DEBUG << "id " << id << " is new" << endl;
+        }
+
+        if (csit->isCurrent() != current || csit->isNew() != newid) {
+            csit->setCurrent(current);
+            csit->setNew(newid);
+            csit->update();
+        }
+    }
+}
+
+void HistoryWidget::connectSceneSignals()
+{
+    ChangesetScene *scene = qobject_cast<ChangesetScene *>(m_panned->scene());
+    if (!scene) return;
+    
+    connect(scene, SIGNAL(commit()),
+            this, SIGNAL(commit()));
+    
+    connect(scene, SIGNAL(revert()),
+            this, SIGNAL(revert()));
+    
+    connect(scene, SIGNAL(diffWorkingFolder()),
+            this, SIGNAL(diffWorkingFolder()));
+
+    connect(scene, SIGNAL(showSummary()),
+            this, SIGNAL(showSummary()));
+
+    connect(scene, SIGNAL(showWork()),
+            this, SIGNAL(showWork()));
+
+    connect(scene, SIGNAL(newBranch()),
+            this, SIGNAL(newBranch()));
+
+    connect(scene, SIGNAL(noBranch()),
+            this, SIGNAL(noBranch()));
+    
+    connect(scene, SIGNAL(updateTo(QString)),
+            this, SIGNAL(updateTo(QString)));
+
+    connect(scene, SIGNAL(diffToCurrent(QString)),
+            this, SIGNAL(diffToCurrent(QString)));
+
+    connect(scene, SIGNAL(diffToParent(QString, QString)),
+            this, SIGNAL(diffToParent(QString, QString)));
+
+    connect(scene, SIGNAL(showSummary(Changeset *)),
+            this, SIGNAL(showSummary(Changeset *)));
+
+    connect(scene, SIGNAL(mergeFrom(QString)),
+            this, SIGNAL(mergeFrom(QString)));
+
+    connect(scene, SIGNAL(newBranch(QString)),
+            this, SIGNAL(newBranch(QString)));
+
+    connect(scene, SIGNAL(tag(QString)),
+            this, SIGNAL(tag(QString)));
+}