view src/uncommitteditem.cpp @ 571:012ba1b83328

Show cancel button with progress bar only when running an operation that it makes sense to cancel (we don't really want people cancelling e.g. initial folder scan because it would leave things in an inconsistent state)

/* -*- 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) 2012 Chris Cannam
    Copyright (c) 2012 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 "uncommitteditem.h"
#include "colourset.h"
#include "debug.h"
#include "textabbrev.h"

#include <QPainter>
#include <QGraphicsScene>
#include <QGraphicsSceneMouseEvent>
#include <QMenu>
#include <QAction>
#include <QLabel>
#include <QWidgetAction>

UncommittedItem::UncommittedItem() :
    m_showBranch(false), m_isNewBranch(false), m_isMerge(false),
    m_column(0), m_row(0), m_wide(false)
{
    m_font = QFont();
    m_font.setPixelSize(11);
    m_font.setBold(false);
    m_font.setItalic(false);
    setCursor(Qt::ArrowCursor);
}

QRectF
UncommittedItem::boundingRect() const
{
    //!!! this stuff is gross, refactor with changesetitem and connectionitem
    int w = 100;
    if (m_wide) w = 180;
    return QRectF(-((w-50)/2 - 1), -30, w - 3, 79 + 40);
}

void
UncommittedItem::mousePressEvent(QGraphicsSceneMouseEvent *e)
{
    DEBUG << "UncommittedItem::mousePressEvent" << endl;
    if (e->button() == Qt::RightButton) {
        activateMenu();
    }
}

void
UncommittedItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *e)
{
    DEBUG << "UncommittedItem::mouseDoubleClickEvent" << endl;
    if (e->button() == Qt::LeftButton) {
        emit showWork();
    }
}

void
UncommittedItem::activateMenu()
{
    QMenu *menu = new QMenu;
    QLabel *label = new QLabel
        (m_isMerge ?
         tr("<qt><b>&nbsp;Uncommitted merge</b></qt>") :
         tr("<qt><b>&nbsp;Uncommitted changes</b></qt>"));
    QWidgetAction *wa = new QWidgetAction(menu);
    wa->setDefaultWidget(label);
    menu->addAction(wa);
    menu->addSeparator();

    QAction *dif = menu->addAction(tr("Diff"));
    connect(dif, SIGNAL(triggered()), this, SIGNAL(diff()));
    QAction *stat = menu->addAction(tr("Summarise changes"));
    connect(stat, SIGNAL(triggered()), this, SIGNAL(showSummary()));
    
    menu->addSeparator();

    QAction *commit = menu->addAction(tr("Commit..."));
    connect(commit, SIGNAL(triggered()), this, SIGNAL(commit()));
    QAction *revert = menu->addAction(tr("Revert..."));
    connect(revert, SIGNAL(triggered()), this, SIGNAL(revert()));

    menu->addSeparator();

    QAction *branch = menu->addAction(tr("Start new branch..."));
    connect(branch, SIGNAL(triggered()), this, SIGNAL(newBranch()));
    QAction *nobranch = menu->addAction(tr("Cancel new branch"));
    nobranch->setEnabled(m_isNewBranch);
    connect(nobranch, SIGNAL(triggered()), this, SIGNAL(noBranch()));

    menu->exec(QCursor::pos());

    ungrabMouse();
}

void
UncommittedItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
{
    if (isMerge()) {
        paintMerge(paint);
    } else {
        paintNormal(paint);
    }
}

void
UncommittedItem::paintNormal(QPainter *paint)
{
    paint->save();
    
    ColourSet *colourSet = ColourSet::instance();
    QColor branchColour = colourSet->getColourFor(m_branch);

    QFont f(m_font);

    QTransform t = paint->worldTransform();
    float scale = std::min(t.m11(), t.m22());
    if (scale > 1.0) {
	int ps = int((f.pixelSize() / scale) + 0.5);
	if (ps < 8) ps = 8;
	f.setPixelSize(ps);
    }

    if (scale < 0.1) {
	paint->setPen(QPen(branchColour, 0, Qt::DashLine));
    } else {
	paint->setPen(QPen(branchColour, 2, Qt::DashLine));
    }
	
    paint->setFont(f);
    QFontMetrics fm(f);
    int fh = fm.height();

    int width = 100;
    if (m_wide) width = 180;
    int x0 = -((width - 50) / 2 - 1);

    int height = 49;
    QRectF r(x0, 0, width - 3, height);
    paint->setBrush(Qt::white);
    paint->drawRoundedRect(r, 7, 7);

    if (m_wide) {
        QString label = tr("Uncommitted changes");
        paint->drawText(-(fm.width(label) - 50)/2,
                        25 - fm.height()/2 + fm.ascent(),
                        label);
    } else {
        QString label = tr("Uncommitted");
        paint->drawText(-(fm.width(label) - 50)/2,
                        25 - fm.height() + fm.ascent(),
                        label);
        label = tr("changes");
        paint->drawText(-(fm.width(label) - 50)/2,
                        25 + fm.ascent(),
                        label);
    }        

    if (m_showBranch && m_branch != "") {
        // write branch name
        f.setBold(true);
        paint->setFont(f);
        int wid = width - 3;
        QString b = TextAbbrev::abbreviate(m_branch, QFontMetrics(f), wid);
        paint->drawText(x0, -fh + fm.ascent() - 4, b);
        f.setBold(false);
    }

    paint->restore();
    return;
}

void
UncommittedItem::paintMerge(QPainter *paint)
{
    paint->save();
    
    ColourSet *colourSet = ColourSet::instance();
    QColor branchColour = colourSet->getColourFor(m_branch);

    QFont f(m_font);

    QTransform t = paint->worldTransform();
    float scale = std::min(t.m11(), t.m22());
    if (scale > 1.0) {
	int ps = int((f.pixelSize() / scale) + 0.5);
	if (ps < 8) ps = 8;
	f.setPixelSize(ps);
    }

    if (scale < 0.1) {
	paint->setPen(QPen(branchColour, 0, Qt::DashLine));
    } else {
	paint->setPen(QPen(branchColour, 2, Qt::DashLine));
    }
	
    paint->setFont(f);
    QFontMetrics fm(f);
    int fh = fm.height();

    int size = fh * 2;
    int x0 = -size/2 + 25;

    paint->setBrush(Qt::white);
    paint->drawEllipse(QRectF(x0, fh, size, size));
    
    if (m_wide) {
        QString label = tr("Uncommitted merge");
        paint->drawText(size/2 + 28,
                        25 - fm.height()/2 + fm.ascent(),
                        label);
    } else {
        QString label = tr("Uncommitted");
        paint->drawText(size/2 + 28,
                        25 - fm.height() + fm.ascent(),
                        label);
        label = tr("merge");
        paint->drawText(size/2 + 28,
                        25 + fm.ascent(),
                        label);
    }        

    if (m_showBranch && m_branch != "") {
        // write branch name
        f.setBold(true);
        paint->setFont(f);
	int wid = size * 3;
	QString branch = TextAbbrev::abbreviate(m_branch, QFontMetrics(f), wid);
	paint->drawText(-wid/2 + 25, fm.ascent() - 4, branch);
    }

    paint->restore();
    return;
}