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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 EasyMercurial
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5
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6 Based on HgExplorer by Jari Korhonen
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7 Copyright (c) 2010 Jari Korhonen
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8 Copyright (c) 2010 Chris Cannam
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9 Copyright (c) 2010 Queen Mary, University of London
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10
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11 This program is free software; you can redistribute it and/or
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12 modify it under the terms of the GNU General Public License as
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13 published by the Free Software Foundation; either version 2 of the
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14 License, or (at your option) any later version. See the file
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15 COPYING included with this distribution for more information.
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16 */
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17
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18 #include "connectionitem.h"
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19 #include "uncommitteditem.h"
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20
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21 #include "changesetitem.h"
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22 #include "changeset.h"
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23 #include "colourset.h"
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24
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25 #include <QPainter>
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26
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27 QRectF
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28 ConnectionItem::boundingRect() const
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29 {
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30 if (!m_parent || !(m_child || m_uncommitted)) return QRectF();
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31 float xscale = 100;
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32 float yscale = 90;
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33 float size = 50;
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34
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35 int p_col = m_parent->column(), p_row = m_parent->row();
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36 int c_col, c_row;
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37 if (m_child) {
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38 c_col = m_child->column(); c_row = m_child->row();
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39 } else {
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40 c_col = m_uncommitted->column(); c_row = m_uncommitted->row();
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41 }
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42
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43 return QRectF(xscale * c_col + size/2 - 2,
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44 yscale * c_row + size - 2,
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45 xscale * p_col - xscale * c_col + 4,
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46 yscale * p_row - yscale * c_row - size + 4)
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47 .normalized();
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48 }
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49
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50 void
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51 ConnectionItem::paint(QPainter *paint, const QStyleOptionGraphicsItem *, QWidget *)
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52 {
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53 if (!m_parent || !(m_child || m_uncommitted)) return;
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54 QPainterPath p;
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55
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56 paint->save();
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57
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58 ColourSet *colourSet = ColourSet::instance();
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59 QString branch;
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60 if (m_child) branch = m_child->getChangeset()->branch();
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61 else branch = m_uncommitted->branch();
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62 QColor branchColour = colourSet->getColourFor(branch);
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63
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64 Qt::PenStyle ls = Qt::SolidLine;
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65 if (!m_child) ls = Qt::DashLine;
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66
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67 QTransform t = paint->worldTransform();
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68 float scale = std::min(t.m11(), t.m22());
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69 if (scale < 0.2) {
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70 paint->setPen(QPen(branchColour, 0, ls));
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71 } else {
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72 paint->setPen(QPen(branchColour, 2, ls));
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73 }
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74
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75 float xscale = 100;
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76
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77 float yscale = 90;
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78 float size = 50;
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79 float ygap = yscale - size;
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80
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81 int p_col = m_parent->column(), p_row = m_parent->row();
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82 int c_col, c_row;
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83 if (m_child) {
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84 c_col = m_child->column(); c_row = m_child->row();
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85 } else {
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86 c_col = m_uncommitted->column(); c_row = m_uncommitted->row();
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87 }
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88
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89 float c_x = xscale * c_col + size/2;
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90 float p_x = xscale * p_col + size/2;
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91
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92 p.moveTo(c_x, yscale * c_row + size);
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93
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94 if (p_col == c_col) {
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95
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96 p.lineTo(p_x, yscale * p_row);
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97
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98 } else if (m_type == Split || m_type == Normal) {
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99
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100 // place the bulk of the line on the child (i.e. branch) row
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101
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102 if (abs(p_row - c_row) > 1) {
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103 p.lineTo(c_x, yscale * p_row - ygap);
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104 }
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105
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106 p.cubicTo(c_x, yscale * p_row,
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107 p_x, yscale * p_row - ygap,
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108 p_x, yscale * p_row);
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109
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110 } else if (m_type == Merge) {
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111
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112 // place bulk of the line on the parent row
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113
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114 p.cubicTo(c_x, yscale * c_row + size + ygap,
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115 p_x, yscale * c_row + size,
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116 p_x, yscale * c_row + size + ygap);
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117
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118 if (abs(p_row - c_row) > 1) {
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119 p.lineTo(p_x, yscale * p_row);
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120 }
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121 }
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122
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123 paint->drawPath(p);
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124 paint->restore();
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125 }
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126
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127
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