diff src/connectionitem.cpp @ 370:b9c153e00e84

Move source files to src/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/connectionitem.cpp	Thu Mar 24 10:27:51 2011 +0000
@@ -0,0 +1,132 @@
+/* -*- 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 "connectionitem.h"
+#include "uncommitteditem.h"
+
+#include "changesetitem.h"
+#include "changeset.h"
+#include "colourset.h"
+
+#include <QPainter>
+
+QRectF
+ConnectionItem::boundingRect() const
+{
+    if (!m_parent || !(m_child || m_uncommitted)) return QRectF();
+    float xscale = 100;
+    float yscale = 90;
+    float size = 50;
+
+    int p_col = m_parent->column(), p_row = m_parent->row();
+    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();
+    }
+
+    return QRectF(xscale * c_col + size/2 - 2,
+		  yscale * c_row + size - 2,
+		  xscale * p_col - xscale * c_col + 4,
+		  yscale * p_row - yscale * c_row - size + 4)
+	.normalized();
+}
+
+void
+ConnectionItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
+{
+    if (!m_parent || !(m_child || m_uncommitted)) return;
+    QPainterPath p;
+
+    paint->save();
+
+    ColourSet *colourSet = ColourSet::instance();
+    QString branch;
+    if (m_child) branch = m_child->getChangeset()->branch();
+    else branch = m_uncommitted->branch();
+    QColor branchColour = colourSet->getColourFor(branch);
+
+    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 p_col = m_parent->column(), p_row = m_parent->row();
+    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();
+    }
+
+    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);
+	}
+    }
+
+    paint->drawPath(p);
+    paint->restore();
+}
+
+