1 | /* |
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2 | |
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3 | Copyright 2014 Adam Reichold |
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4 | |
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5 | This file is part of qpdfview. |
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6 | |
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7 | qpdfview is free software: you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation, either version 2 of the License, or |
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10 | (at your option) any later version. |
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11 | |
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12 | qpdfview is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU General Public License |
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18 | along with qpdfview. If not, see <http://www.gnu.org/licenses/>. |
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19 | |
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20 | */ |
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21 | |
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22 | #include "thumbnailitem.h" |
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23 | |
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24 | #include <QGraphicsSceneMouseEvent> |
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25 | #include <qmath.h> |
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26 | #include <QPainter> |
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27 | #include <QWidget> |
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28 | |
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29 | namespace qpdfview |
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30 | { |
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31 | |
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32 | ThumbnailItem::ThumbnailItem(Model::Page* page, const QString& text, int index, QGraphicsItem* parent) : PageItem(page, index, PageItem::ThumbnailMode, parent), |
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33 | m_text(text), |
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34 | m_isHighlighted(false) |
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35 | { |
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36 | setAcceptHoverEvents(false); |
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37 | } |
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38 | |
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39 | QRectF ThumbnailItem::boundingRect() const |
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40 | { |
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41 | return PageItem::boundingRect().adjusted(0.0, 0.0, 0.0, textHeight()); |
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42 | } |
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43 | |
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44 | void ThumbnailItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) |
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45 | { |
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46 | const QRectF boundingRect = PageItem::boundingRect(); |
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47 | |
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48 | |
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49 | painter->save(); |
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50 | |
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51 | painter->setClipping(true); |
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52 | painter->setClipRect(boundingRect); |
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53 | |
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54 | PageItem::paint(painter, option, widget); |
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55 | |
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56 | painter->restore(); |
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57 | |
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58 | |
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59 | #if QT_VERSION >= QT_VERSION_CHECK(4,7,0) |
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60 | |
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61 | const QSizeF textSize = m_text.size(); |
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62 | |
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63 | QPointF pos = boundingRect.bottomLeft(); |
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64 | pos.rx() += 0.5 * (boundingRect.width() - textSize.width()); |
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65 | pos.ry() += 0.5 * textSize.height(); |
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66 | |
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67 | painter->drawStaticText(pos, m_text); |
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68 | |
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69 | #else |
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70 | |
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71 | const QFontMetrics fontMetrics = QFontMetrics(QFont()); |
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72 | |
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73 | QPointF pos = boundingRect.bottomLeft(); |
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74 | pos.rx() += 0.5 * (boundingRect.width() - fontMetrics.width(m_text)); |
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75 | pos.ry() += fontMetrics.height(); |
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76 | |
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77 | painter->drawText(pos, m_text); |
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78 | |
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79 | #endif // QT_VERSION |
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80 | |
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81 | if(m_isHighlighted) |
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82 | { |
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83 | painter->save(); |
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84 | |
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85 | painter->setCompositionMode(QPainter::CompositionMode_Multiply); |
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86 | painter->fillRect(boundingRect, widget->palette().highlight()); |
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87 | |
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88 | painter->restore(); |
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89 | } |
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90 | } |
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91 | |
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92 | qreal ThumbnailItem::textHeight() const |
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93 | { |
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94 | #if QT_VERSION >= QT_VERSION_CHECK(4,7,0) |
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95 | |
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96 | return 2.0 * m_text.size().height(); |
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97 | |
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98 | #else |
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99 | |
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100 | return 2.0 * QFontMetrics(QFont()).height(); |
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101 | |
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102 | #endif // QT_VERSION |
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103 | } |
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104 | |
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105 | void ThumbnailItem::setHighlighted(bool highlighted) |
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106 | { |
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107 | if(m_isHighlighted != highlighted) |
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108 | { |
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109 | m_isHighlighted = highlighted; |
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110 | |
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111 | update(); |
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112 | } |
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113 | } |
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114 | |
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115 | void ThumbnailItem::mousePressEvent(QGraphicsSceneMouseEvent* event) |
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116 | { |
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117 | if(event->modifiers() == Qt::NoModifier |
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118 | && (event->button() == Qt::LeftButton || event->button() == Qt::MidButton)) |
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119 | { |
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120 | emit linkClicked(event->button() == Qt::MidButton, index() + 1); |
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121 | |
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122 | event->accept(); |
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123 | return; |
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124 | } |
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125 | |
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126 | event->ignore(); |
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127 | } |
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128 | |
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129 | void ThumbnailItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent*) |
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130 | { |
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131 | } |
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132 | |
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133 | void ThumbnailItem::mouseMoveEvent(QGraphicsSceneMouseEvent*) |
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134 | { |
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135 | } |
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136 | |
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137 | void ThumbnailItem::mouseReleaseEvent(QGraphicsSceneMouseEvent*) |
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138 | { |
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139 | } |
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140 | |
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141 | void ThumbnailItem::contextMenuEvent(QGraphicsSceneContextMenuEvent*) |
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142 | { |
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143 | } |
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144 | |
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145 | void ThumbnailItem::loadInteractiveElements() |
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146 | { |
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147 | const qreal width = size().width() / 72.0 * 25.4; |
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148 | const qreal height = size().height() / 72.0 * 25.4; |
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149 | |
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150 | const qreal longEdge = qMax(width, height); |
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151 | const qreal shortEdge = qMin(width, height); |
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152 | |
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153 | QString paperSize; |
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154 | |
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155 | if(qAbs(longEdge - 279.4) <= 1.0 && qAbs(shortEdge - 215.9) <= 1.0) |
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156 | { |
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157 | paperSize = QLatin1String(" (Letter)"); |
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158 | } |
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159 | else |
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160 | { |
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161 | qreal longEdgeA = 1189.0; |
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162 | qreal shortEdgeA = 841.0; |
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163 | |
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164 | qreal longEdgeB = 1414.0; |
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165 | qreal shortEdgeB = 1000.0; |
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166 | |
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167 | for(int i = 0; i <= 10; ++i) |
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168 | { |
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169 | if(qAbs(longEdge - longEdgeA) <= 1.0 && qAbs(shortEdge - shortEdgeA) <= 1.0) |
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170 | { |
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171 | paperSize = QString(" (A%1)").arg(i); |
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172 | break; |
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173 | } |
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174 | else if(qAbs(longEdge - longEdgeB) <= 1.0 && qAbs(shortEdge - shortEdgeB) <= 1.0) |
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175 | { |
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176 | paperSize = QString(" (B%1)").arg(i); |
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177 | break; |
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178 | } |
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179 | |
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180 | longEdgeA = shortEdgeA; |
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181 | shortEdgeA /= qSqrt(2.0); |
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182 | |
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183 | longEdgeB = shortEdgeB; |
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184 | shortEdgeB /= qSqrt(2.0); |
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185 | } |
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186 | } |
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187 | |
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188 | setToolTip(QString("%1 mm x %2 mm%3").arg(width, 0, 'f', 1).arg(height, 0, 'f', 1).arg(paperSize)); |
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189 | } |
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190 | |
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191 | } // qpdfview |
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