[1f4adec] | 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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