Chris@57: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@57: 
Chris@57: /*
Chris@57:     EasyMercurial
Chris@57: 
Chris@57:     Based on HgExplorer by Jari Korhonen
Chris@57:     Copyright (c) 2010 Jari Korhonen
Chris@244:     Copyright (c) 2011 Chris Cannam
Chris@244:     Copyright (c) 2011 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@57: 
Chris@43: #include "changesetitem.h"
Chris@281: #include "changesetscene.h"
Chris@117: #include "changesetdetailitem.h"
Chris@43: #include "changeset.h"
Chris@53: #include "textabbrev.h"
Chris@53: #include "colourset.h"
Chris@117: #include "debug.h"
Chris@43: 
Chris@43: #include <QPainter>
Chris@117: #include <QGraphicsScene>
Chris@132: #include <QGraphicsSceneMouseEvent>
Chris@140: #include <QMenu>
Chris@140: #include <QAction>
Chris@140: #include <QLabel>
Chris@140: #include <QWidgetAction>
Chris@153: #include <QApplication>
Chris@153: #include <QClipboard>
Chris@43: 
Chris@53: ChangesetItem::ChangesetItem(Changeset *cs) :
Chris@117:     m_changeset(cs), m_detail(0),
Chris@133:     m_showBranch(false), m_column(0), m_row(0), m_wide(false),
Chris@133:     m_current(false), m_new(false)
Chris@53: {
Chris@53:     m_font = QFont();
Chris@53:     m_font.setPixelSize(11);
Chris@53:     m_font.setBold(false);
Chris@53:     m_font.setItalic(false);
Chris@168:     setCursor(Qt::ArrowCursor);
Chris@53: }
Chris@53: 
Chris@141: QString
Chris@141: ChangesetItem::getId()
Chris@141: {
Chris@141:     return m_changeset->id();
Chris@141: }
Chris@141: 
Chris@43: QRectF
Chris@43: ChangesetItem::boundingRect() const
Chris@43: {
Chris@55:     int w = 100;
Chris@55:     if (m_wide) w = 180;
Chris@250:     return QRectF(-((w-50)/2 - 1), -30, w - 3, 90);
Chris@43: }
Chris@43: 
Chris@43: void
Chris@119: ChangesetItem::showDetail()
Chris@117: {
Chris@119:     if (m_detail) return;
Chris@117:     m_detail = new ChangesetDetailItem(m_changeset);
Chris@117:     m_detail->setZValue(zValue() + 1);
Chris@117:     scene()->addItem(m_detail);
Chris@117:     int w = 100;
Chris@117:     if (m_wide) w = 180;
Chris@124:     int h = 80;
Chris@124: //    m_detail->moveBy(x() - (m_detail->boundingRect().width() - 50) / 2,
Chris@124: //                     y() + 60);
Chris@124:     m_detail->moveBy(x() + (w + 50) / 2 + 10 + 0.5,
Chris@124:                      y() - (m_detail->boundingRect().height() - h) / 2 + 0.5);
Chris@119:     emit detailShown();
Chris@119: }    
Chris@119: 
Chris@119: void
Chris@119: ChangesetItem::hideDetail()
Chris@119: {
Chris@124:     if (!m_detail) return;
Chris@124:     scene()->removeItem(m_detail);
Chris@119:     delete m_detail;
Chris@119:     m_detail = 0;
Chris@119:     emit detailHidden();
Chris@119: }    
Chris@119: 
Chris@119: void
Chris@119: ChangesetItem::mousePressEvent(QGraphicsSceneMouseEvent *e)
Chris@119: {
Chris@119:     DEBUG << "ChangesetItem::mousePressEvent" << endl;
Chris@132:     if (e->button() == Qt::LeftButton) {
Chris@132:         if (m_detail) {
Chris@132:             hideDetail();
Chris@132:         } else {
Chris@132:             showDetail();
Chris@132:         }
Chris@140:     } else if (e->button() == Qt::RightButton) {
Chris@141:         if (m_detail) {
Chris@141:             hideDetail();
Chris@141:         }
Chris@140:         activateMenu();
Chris@119:     }
Chris@117: }
Chris@117: 
Chris@117: void
Chris@140: ChangesetItem::activateMenu()
Chris@140: {
Chris@153:     m_parentDiffActions.clear();
Chris@288:     m_summaryActions.clear();
Chris@153: 
Chris@140:     QMenu *menu = new QMenu;
Chris@165:     QLabel *label = new QLabel(tr("<qt><b>&nbsp;Revision: </b>%1</qt>")
Chris@165:                                .arg(Changeset::hashOf(m_changeset->id())));
Chris@141:     QWidgetAction *wa = new QWidgetAction(menu);
Chris@140:     wa->setDefaultWidget(label);
Chris@140:     menu->addAction(wa);
Chris@140:     menu->addSeparator();
Chris@141: 
Chris@153:     QAction *copyId = menu->addAction(tr("Copy identifier to clipboard"));
Chris@153:     connect(copyId, SIGNAL(triggered()), this, SLOT(copyIdActivated()));
Chris@141: 
Chris@281:     QStringList parents = m_changeset->parents();
Chris@153: 
Chris@288:     QString leftId, rightId;
Chris@288:     bool havePositions = false;
Chris@288: 
Chris@281:     if (parents.size() > 1) {
Chris@281:         ChangesetScene *cs = dynamic_cast<ChangesetScene *>(scene());
Chris@281:         if (cs && parents.size() == 2) {
Chris@281:             ChangesetItem *i0 = cs->getItemById(parents[0]);
Chris@281:             ChangesetItem *i1 = cs->getItemById(parents[1]);
Chris@281:             if (i0 && i1) {
Chris@281:                 if (i0->x() < i1->x()) {
Chris@281:                     leftId = parents[0];
Chris@281:                     rightId = parents[1];
Chris@281:                 } else {
Chris@281:                     leftId = parents[1];
Chris@281:                     rightId = parents[0];
Chris@281:                 }
Chris@281:                 havePositions = true;
Chris@281:             }
Chris@281:         }
Chris@288:     }
Chris@281: 
Chris@288:     if (parents.size() > 1) {
Chris@288:         if (havePositions) {
Chris@288:             QAction *stat = menu->addAction(tr("Summarise changes from left parent"));
Chris@288:             connect(stat, SIGNAL(triggered()), this, SLOT(showSummaryToParentActivated()));
Chris@288:             m_summaryActions[stat] = leftId;
Chris@288:             
Chris@288:             stat = menu->addAction(tr("Summarise changes from right parent"));
Chris@288:             connect(stat, SIGNAL(triggered()), this, SLOT(showSummaryToParentActivated()));
Chris@288:             m_summaryActions[stat] = rightId;
Chris@288:         } else {
Chris@288:             
Chris@288:             foreach (QString parentId, parents) {
Chris@288:                 QString text = tr("Summarise changes from parent %1").arg(Changeset::hashOf(parentId));
Chris@288:                 QAction *stat = menu->addAction(text);
Chris@288:                 connect(stat, SIGNAL(triggered()), this, SLOT(showSummaryToParentActivated()));
Chris@288:                 m_summaryActions[stat] = parentId;
Chris@288:             }
Chris@288: 
Chris@288:         }
Chris@288:     } else {
Chris@288:         QAction *stat = menu->addAction(tr("Summarise changes"));
Chris@288:         connect(stat, SIGNAL(triggered()), this, SLOT(showSummaryToParentActivated()));
Chris@288:     }
Chris@288: 
Chris@288:     menu->addSeparator();
Chris@288: 
Chris@288:     if (parents.size() > 1) {
Chris@281:         if (havePositions) {
Chris@281:             
Chris@288:             QAction *diff = menu->addAction(tr("Diff to left parent"));
Chris@288:             connect(diff, SIGNAL(triggered()), this, SLOT(diffToParentActivated()));
Chris@288:             m_parentDiffActions[diff] = leftId;
Chris@281:             
Chris@288:             diff = menu->addAction(tr("Diff to right parent"));
Chris@288:             connect(diff, SIGNAL(triggered()), this, SLOT(diffToParentActivated()));
Chris@288:             m_parentDiffActions[diff] = rightId;
Chris@281: 
Chris@281:         } else {
Chris@281: 
Chris@281:             foreach (QString parentId, parents) {
Chris@288:                 QString text = tr("Diff to parent %1").arg(Changeset::hashOf(parentId));
Chris@288:                 QAction *diff = menu->addAction(text);
Chris@288:                 connect(diff, SIGNAL(triggered()), this, SLOT(diffToParentActivated()));
Chris@288:                 m_parentDiffActions[diff] = parentId;
Chris@281:             }
Chris@153:         }
Chris@153: 
Chris@153:     } else {
Chris@153: 
Chris@288:         QAction *diff = menu->addAction(tr("Diff to parent"));
Chris@288:         connect(diff, SIGNAL(triggered()), this, SLOT(diffToParentActivated()));
Chris@153:     }
Chris@153: 
Chris@153:     QAction *diffCurrent = menu->addAction(tr("Diff to current working folder"));
Chris@141:     connect(diffCurrent, SIGNAL(triggered()), this, SLOT(diffToCurrentActivated()));
Chris@141: 
Chris@140:     menu->addSeparator();
Chris@141: 
Chris@153:     QAction *update = menu->addAction(tr("Update to this revision"));
Chris@153:     connect(update, SIGNAL(triggered()), this, SLOT(updateActivated()));
Chris@153: 
Chris@140:     QAction *merge = menu->addAction(tr("Merge from here to current"));
Chris@141:     connect(merge, SIGNAL(triggered()), this, SLOT(mergeActivated()));
Chris@153: 
Chris@153:     menu->addSeparator();
Chris@153: 
Chris@153:     QAction *tag = menu->addAction(tr("Add tag..."));
Chris@141:     connect(tag, SIGNAL(triggered()), this, SLOT(tagActivated()));
Chris@141: 
Chris@148:     menu->exec(QCursor::pos());
Chris@148: 
Chris@141:     ungrabMouse();
Chris@140: }
Chris@140: 
Chris@153: void
Chris@153: ChangesetItem::copyIdActivated()
Chris@153: {
Chris@153:     QClipboard *clipboard = QApplication::clipboard();
Chris@153:     clipboard->setText(Changeset::hashOf(m_changeset->id()));
Chris@153: }
Chris@153: 
Chris@153: void ChangesetItem::diffToParentActivated()
Chris@153: {
Chris@153:     QAction *a = qobject_cast<QAction *>(sender());
Chris@153:     QString parentId;
Chris@153:     if (m_parentDiffActions.contains(a)) {
Chris@153:         parentId = m_parentDiffActions[a];
Chris@153:         DEBUG << "ChangesetItem::diffToParentActivated: specific parent " 
Chris@153:               << parentId << " selected" << endl;
Chris@153:     } else {
Chris@153:         parentId = m_changeset->parents()[0];
Chris@153:         DEBUG << "ChangesetItem::diffToParentActivated: "
Chris@153:               << "no specific parent selected, using first parent "
Chris@153:               << parentId << endl;
Chris@153:     }
Chris@153: 
Chris@153:     emit diffToParent(getId(), parentId);
Chris@153: }
Chris@153: 
Chris@288: void ChangesetItem::showSummaryToParentActivated()
Chris@288: {
Chris@288:     QAction *a = qobject_cast<QAction *>(sender());
Chris@288:     QString parentId;
Chris@288:     if (m_summaryActions.contains(a)) {
Chris@288:         parentId = m_summaryActions[a];
Chris@288:         DEBUG << "ChangesetItem::showSummaryToParentActivated: specific parent " 
Chris@288:               << parentId << " selected" << endl;
Chris@288:     } else {
Chris@288:         parentId = m_changeset->parents()[0];
Chris@288:         DEBUG << "ChangesetItem::showSummaryToParentActivated: "
Chris@288:               << "no specific parent selected, using first parent "
Chris@288:               << parentId << endl;
Chris@288:     }
Chris@288: 
Chris@288:     emit showSummaryToParent(getId(), parentId);
Chris@288: }
Chris@288: 
Chris@141: void ChangesetItem::updateActivated() { emit updateTo(getId()); }
Chris@141: void ChangesetItem::diffToCurrentActivated() { emit diffToCurrent(getId()); }
Chris@141: void ChangesetItem::mergeActivated() { emit mergeFrom(getId()); }
Chris@141: void ChangesetItem::tagActivated() { emit tag(getId()); }
Chris@141: 
Chris@140: void
Chris@288: ChangesetItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
Chris@43: {
Chris@53:     paint->save();
Chris@53:     
Chris@53:     ColourSet *colourSet = ColourSet::instance();
Chris@53:     QColor branchColour = colourSet->getColourFor(m_changeset->branch());
Chris@128:     QColor userColour = colourSet->getColourFor(m_changeset->author());
Chris@53: 
Chris@53:     QFont f(m_font);
Chris@53: 
Chris@54:     QTransform t = paint->worldTransform();
Chris@53:     float scale = std::min(t.m11(), t.m22());
Chris@53:     if (scale > 1.0) {
Chris@53: 	int ps = int((f.pixelSize() / scale) + 0.5);
Chris@53: 	if (ps < 8) ps = 8;
Chris@53: 	f.setPixelSize(ps);
Chris@53:     }
Chris@54: 
Chris@250:     bool showText = (scale >= 0.2);
Chris@250:     bool showProperLines = (scale >= 0.1);
Chris@250: 
Chris@250:     if (!showProperLines) {
Chris@54: 	paint->setPen(QPen(branchColour, 0));
Chris@54:     } else {
Chris@54: 	paint->setPen(QPen(branchColour, 2));
Chris@54:     }
Chris@53: 	
Chris@53:     paint->setFont(f);
Chris@53:     QFontMetrics fm(f);
Chris@53:     int fh = fm.height();
Chris@55: 
Chris@55:     int width = 100;
Chris@55:     if (m_wide) width = 180;
Chris@55:     int x0 = -((width - 50) / 2 - 1);
Chris@55: 
Chris@250:     int textwid = width - 7;
Chris@250: 
Chris@250:     QString comment;
Chris@250:     QStringList lines;
Chris@250:     int lineCount = 3;
Chris@250: 
Chris@250:     if (showText) {
Chris@250:     
Chris@250:         comment = m_changeset->comment().trimmed();
Chris@250:         comment = comment.replace("\\n", " ");
Chris@250:         comment = comment.replace(QRegExp("^\"\\s*\\**\\s*"), "");
Chris@250:         comment = comment.replace(QRegExp("\"$"), "");
Chris@250:         comment = comment.replace("\\\"", "\"");
Chris@250: 
Chris@250:         comment = TextAbbrev::abbreviate(comment, fm, textwid,
Chris@250:                                          TextAbbrev::ElideEnd, "...", 3);
Chris@250:         // abbreviate() changes this (ouch!), restore it
Chris@250:         textwid = width - 5;
Chris@250: 
Chris@250:         lines = comment.split('\n');
Chris@250:         lineCount = lines.size();
Chris@250: 
Chris@250:         if (lineCount < 2) lineCount = 2;
Chris@250:     }
Chris@250: 
Chris@250:     int height = (lineCount + 1) * fh + 2;
Chris@56:     QRectF r(x0, 0, width - 3, height);
Chris@250: 
Chris@250:     if (showProperLines) {
Chris@250: 
Chris@250:         paint->setBrush(Qt::white);
Chris@250: 
Chris@250:         if (m_current) {
Chris@250:             paint->drawRect(QRectF(x0 - 4, -4, width + 5, height + 8));
Chris@250:         }
Chris@250: 
Chris@250:         if (m_new) {
Chris@250:             paint->save();
Chris@250:             paint->setPen(Qt::yellow);
Chris@250:             paint->setBrush(Qt::NoBrush);
Chris@250:             paint->drawRect(QRectF(x0 - 2, -2, width + 1, height + 4));
Chris@250:             paint->restore();
Chris@250:         }
Chris@250:     }
Chris@250: 
Chris@53:     paint->drawRect(r);
Chris@53: 
Chris@250:     if (!showText) {
Chris@53: 	paint->restore();
Chris@53: 	return;
Chris@53:     }
Chris@53: 
Chris@55:     paint->fillRect(QRectF(x0 + 0.5, 0.5, width - 4, fh - 0.5),
Chris@55: 		    QBrush(userColour));
Chris@53: 
Chris@53:     paint->setPen(QPen(Qt::white));
Chris@53: 
Chris@250:     QString person = TextAbbrev::abbreviate(m_changeset->authorName(),
Chris@250:                                             fm, textwid);
Chris@55:     paint->drawText(x0 + 3, fm.ascent(), person);
Chris@53: 
Chris@53:     paint->setPen(QPen(Qt::black));
Chris@53: 
Chris@147:     QStringList tags = m_changeset->tags();
Chris@147:     if (!tags.empty()) {
Chris@147:         QStringList nonTipTags;
Chris@147:         foreach (QString t, tags) {
Chris@147:             // I'm not convinced that showing the tip tag really
Chris@147:             // works; I think perhaps it confuses as much as it
Chris@147:             // illuminates.  But also, our current implementation
Chris@147:             // doesn't interact well with it because it moves -- it's
Chris@147:             // the one thing that can actually (in normal use) change
Chris@147:             // inside an existing changeset record even during an
Chris@147:             // incremental update
Chris@147:             if (t != "tip") nonTipTags.push_back(t);
Chris@147:         }
Chris@147:         if (!nonTipTags.empty()) {
Chris@147:             QString tagText = nonTipTags.join(" ").trimmed();
Chris@147:             int tw = fm.width(tagText);
Chris@147:             paint->fillRect(QRectF(x0 + width - 8 - tw, 1, tw + 4, fh - 1),
Chris@147:                             QBrush(Qt::yellow));
Chris@147:             paint->drawText(x0 + width - 6 - tw, fm.ascent(), tagText);
Chris@147:         }
Chris@128:     }
Chris@128: 
Chris@74:     if (m_showBranch) {
Chris@56: 	// write branch name
Chris@153:         paint->save();
Chris@56: 	f.setBold(true);
Chris@56: 	paint->setFont(f);
Chris@153: 	paint->setPen(QPen(branchColour));
Chris@56: 	QString branch = m_changeset->branch();
Chris@74:         if (branch == "") branch = "default";
Chris@56: 	int wid = width - 3;
Chris@56: 	branch = TextAbbrev::abbreviate(branch, QFontMetrics(f), wid);
Chris@56: 	paint->drawText(x0, -fh + fm.ascent() - 4, branch);
Chris@56: 	f.setBold(false);
Chris@153:         paint->restore();
Chris@56:     }
Chris@56: 
Chris@53:     paint->setFont(f);
Chris@53: 
Chris@53:     for (int i = 0; i < lines.size(); ++i) {
Chris@55: 	paint->drawText(x0 + 3, i * fh + fh + fm.ascent(), lines[i].trimmed());
Chris@53:     }
Chris@53: 
Chris@53:     paint->restore();
Chris@43: }