1 | /* |
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2 | |
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3 | Copyright 2015 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 "searchitemdelegate.h" |
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23 | |
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24 | #include <QApplication> |
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25 | #include <qmath.h> |
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26 | #include <QPainter> |
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27 | #include <QTextLayout> |
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28 | |
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29 | #include "searchmodel.h" |
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30 | |
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31 | namespace qpdfview |
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32 | { |
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33 | |
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34 | SearchItemDelegate::SearchItemDelegate(QObject* parent) : QStyledItemDelegate(parent) |
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35 | { |
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36 | } |
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37 | |
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38 | void SearchItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const |
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39 | { |
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40 | QStyledItemDelegate::paint(painter, option, index); |
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41 | |
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42 | const int progress = index.data(SearchModel::ProgressRole).toInt(); |
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43 | |
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44 | if(progress != 0) |
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45 | { |
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46 | paintProgress(painter, option, progress); |
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47 | return; |
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48 | } |
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49 | |
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50 | const QString matchedText = index.data(SearchModel::MatchedTextRole).toString(); |
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51 | const QString surroundingText = index.data(SearchModel::SurroundingTextRole).toString(); |
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52 | |
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53 | if(!matchedText.isEmpty() && !surroundingText.isEmpty()) |
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54 | { |
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55 | paintText(painter, option, matchedText, surroundingText); |
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56 | return; |
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57 | } |
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58 | } |
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59 | |
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60 | void SearchItemDelegate::paintProgress(QPainter* painter, const QStyleOptionViewItem& option, |
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61 | int progress) const |
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62 | { |
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63 | QRect highlightedRect = option.rect; |
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64 | highlightedRect.setWidth(progress * highlightedRect.width() / 100); |
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65 | |
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66 | painter->save(); |
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67 | |
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68 | painter->setCompositionMode(QPainter::CompositionMode_Multiply); |
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69 | painter->fillRect(highlightedRect, option.palette.highlight()); |
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70 | |
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71 | painter->restore(); |
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72 | } |
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73 | |
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74 | void SearchItemDelegate::paintText(QPainter* painter, const QStyleOptionViewItem& option, |
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75 | const QString& matchedText, const QString& surroundingText) const |
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76 | { |
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77 | const int textMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1; |
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78 | const QRect textRect = option.rect.adjusted(textMargin, 0, -textMargin, 0); |
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79 | const QString elidedText = option.fontMetrics.elidedText(surroundingText, option.textElideMode, textRect.width()); |
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80 | |
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81 | QTextOption textOption; |
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82 | textOption.setWrapMode(QTextOption::NoWrap); |
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83 | textOption.setTextDirection(elidedText.isRightToLeft() ? Qt::RightToLeft : Qt::LeftToRight); |
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84 | textOption.setAlignment(QStyle::visualAlignment(textOption.textDirection(), option.displayAlignment)); |
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85 | |
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86 | QTextLayout textLayout; |
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87 | textLayout.setTextOption(textOption); |
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88 | textLayout.setText(elidedText); |
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89 | textLayout.setFont(option.font); |
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90 | |
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91 | QFont font = textLayout.font(); |
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92 | font.setWeight(QFont::Light); |
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93 | textLayout.setFont(font); |
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94 | |
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95 | |
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96 | QList< QTextLayout::FormatRange > additionalFormats; |
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97 | |
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98 | for(int index = 0; (index = elidedText.indexOf(matchedText, index)) != -1; index += matchedText.length()) |
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99 | { |
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100 | QTextLayout::FormatRange formatRange; |
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101 | formatRange.start = index; |
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102 | formatRange.length = matchedText.length(); |
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103 | formatRange.format.setFontWeight(QFont::Bold); |
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104 | |
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105 | additionalFormats.append(formatRange); |
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106 | } |
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107 | |
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108 | textLayout.setAdditionalFormats(additionalFormats); |
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109 | |
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110 | |
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111 | textLayout.beginLayout(); |
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112 | |
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113 | QTextLine textLine = textLayout.createLine(); |
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114 | |
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115 | if(!textLine.isValid()) |
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116 | { |
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117 | return; |
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118 | } |
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119 | |
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120 | textLine.setLineWidth(textRect.width()); |
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121 | |
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122 | textLayout.endLayout(); |
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123 | |
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124 | |
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125 | const QSize layoutSize(textRect.width(), qFloor(textLine.height())); |
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126 | const QRect layoutRect = QStyle::alignedRect(option.direction, option.displayAlignment, layoutSize, textRect); |
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127 | |
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128 | painter->save(); |
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129 | |
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130 | painter->setClipping(true); |
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131 | painter->setClipRect(layoutRect); |
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132 | |
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133 | textLine.draw(painter, layoutRect.topLeft()); |
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134 | |
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135 | painter->restore(); |
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136 | } |
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137 | |
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138 | } // qpdfview |
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