view src/connectionitem.cpp @ 633:db62a0cb3037

* Added setting to specify that diff command should be run once for each selected file, rather than passing all file names to diff command (p4merge doesn't like being given many files)

/* -*- 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 "connectionitem.h"
#include "uncommitteditem.h"

#include "changesetitem.h"
#include "changeset.h"
#include "colourset.h"
#include "textabbrev.h"

#include <QPainter>
#include <QFont>

QRectF
ConnectionItem::boundingRect() const
{
    if (!(m_child || m_uncommitted)) return QRectF();
    float xscale = 100;
    float yscale = 90;
    float size = 50;

    int c_col, c_row;
    if (m_child) {
        c_col = m_child->column(); c_row = m_child->row();
    } else {
        c_col = m_uncommitted->column(); c_row = m_uncommitted->row();
    }

    int p_col, p_row;
    if (m_parent) {
        p_col = m_parent->column(); p_row = m_parent->row();
    } else {
        p_col = c_col - 1; p_row = c_row + 1;
    }

    return QRectF(xscale * c_col + size/2 - 2,
		  yscale * c_row + size - 22,
		  xscale * p_col - xscale * c_col + 6,
		  yscale * p_row - yscale * c_row - size + 44)
	.normalized();
}

void
ConnectionItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
{
    if (!(m_child || m_uncommitted)) return;
    QPainterPath p;

    paint->save();

    int alpha = 255;
    if (m_child && m_child->isClosed()) alpha = 90;

    ColourSet *colourSet = ColourSet::instance();
    QString branch;
    if (m_child) branch = m_child->getChangeset()->branch();
    else branch = m_uncommitted->branch();
    QColor branchColour = colourSet->getColourFor(branch);

    branchColour.setAlpha(alpha);

    Qt::PenStyle ls = Qt::SolidLine;
    if (!m_child) ls = Qt::DashLine;

    QTransform t = paint->worldTransform();
    float scale = std::min(t.m11(), t.m22());
    if (scale < 0.2) {
	paint->setPen(QPen(branchColour, 0, ls));
    } else {
	paint->setPen(QPen(branchColour, 2, ls));
    }

    float xscale = 100;

    float yscale = 90;
    float size = 50;
    float ygap = yscale - size - 2;

    int c_col, c_row;
    if (m_child) {
        c_col = m_child->column(); c_row = m_child->row();
    } else {
        c_col = m_uncommitted->column(); c_row = m_uncommitted->row();
    }

    int p_col, p_row;
    if (m_parent) {
        p_col = m_parent->column(); p_row = m_parent->row();
    } else {
        p_col = c_col - 1; p_row = c_row + 1;
    }

    float c_x = xscale * c_col + size/2;
    float p_x = xscale * p_col + size/2;

    // ensure line reaches the box, even if it's in a small height --
    // doesn't matter if we overshoot as the box is opaque and has a
    // greater Z value
    p.moveTo(c_x, yscale * c_row + size - 20);

    p.lineTo(c_x, yscale * c_row + size);

    if (p_col == c_col) {

	p.lineTo(p_x, yscale * p_row);

    } else if (m_type == Split || m_type == Normal) {

	// place the bulk of the line on the child (i.e. branch) row

	if (abs(p_row - c_row) > 1) {
	    p.lineTo(c_x, yscale * p_row - ygap);
	}

	p.cubicTo(c_x, yscale * p_row,
		  p_x, yscale * p_row - ygap,
		  p_x, yscale * p_row);

    } else if (m_type == Merge) {

	// place bulk of the line on the parent row

	p.cubicTo(c_x, yscale * c_row + size + ygap,
		  p_x, yscale * c_row + size,
		  p_x, yscale * c_row + size + ygap);

	if (abs(p_row - c_row) > 1) {
	    p.lineTo(p_x, yscale * p_row);
	}
    }

    if (m_parent) {

        // ensure line reaches the node -- again doesn't matter if we
        // overshoot
        p.lineTo(p_x, yscale * p_row + 20);

    } else {

        // no parent: merge from closed branch: draw only half the line
        paint->setClipRect(QRectF((c_x + p_x)/2, yscale * c_row + size - 22,
                                  xscale, yscale));
    }
    
    paint->drawPath(p);

    if (!m_parent) {

        // merge from closed branch: draw branch name

        paint->setClipping(false);

        QFont f;
        f.setPixelSize(11);
        f.setBold(true);
        f.setItalic(false);
	paint->setFont(f);

	QString branch = m_mergedBranch;
        if (branch == "") branch = "default";
	int wid = xscale;
	branch = TextAbbrev::abbreviate(branch, QFontMetrics(f), wid);
	paint->drawText((c_x + p_x)/2 - wid - 2,
                        yscale * c_row + size + ygap/2 + 2,
                        branch);
    }
    
    paint->restore();
}