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Make comment header label searchable
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2019 Ruhr University Bochum, Chair for Embedded Security. All Rights reserved. | ||
| // Copyright (c) 2019 Marc Fyrbiak, Sebastian Wallat, Max Hoffmann ("ORIGINAL AUTHORS"). All rights reserved. | ||
| // Copyright (c) 2021 Max Planck Institute for Security and Privacy. All Rights reserved. | ||
| // Copyright (c) 2021 Jörn Langheinrich, Julian Speith, Nils Albartus, René Walendy, Simon Klix ("ORIGINAL AUTHORS"). All Rights reserved. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
|
|
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| #pragma once | ||
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| #include <QLabel> | ||
| #include <QList> | ||
| #include <QPair> | ||
| #include <QPainter> | ||
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| class QFontMetrics; | ||
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| namespace hal { | ||
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| class SearchableLabel : public QLabel | ||
| { | ||
| Q_OBJECT | ||
| protected: | ||
| void paintEvent(QPaintEvent* ev) override; | ||
| public Q_SLOTS: | ||
| void handleSearchChanged(const QString& string, int option); | ||
| public: | ||
| SearchableLabel(QWidget* parent = nullptr); | ||
| SearchableLabel(const QString& txt, QWidget* parent = nullptr); | ||
| bool hasMatch() const; | ||
| private: | ||
| void drawSubstring(QPainter& painter, int pos, int len, bool hilite); | ||
| bool exactWordMatch(int pos, int len) const; | ||
| QList<QPair<int,int> > mMatchPositions; | ||
| QFontMetrics* mMetrics; | ||
| int xText; | ||
| int yText; | ||
|
|
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| static const int sHiliteOffset = 2; | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| #include "gui/searchbar/searchable_label.h" | ||
| #include "gui/searchbar/searchoptions.h" | ||
| #include <QPainter> | ||
| #include <QFontMetrics> | ||
| #include <QDebug> | ||
| #include <QRegularExpression> | ||
|
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| namespace hal { | ||
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| SearchableLabel::SearchableLabel(const QString &txt, QWidget *parent) | ||
| : QLabel(txt, parent) | ||
| {;} | ||
|
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| SearchableLabel::SearchableLabel(QWidget *parent) | ||
| : QLabel(parent) | ||
| {;} | ||
|
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| void SearchableLabel::paintEvent(QPaintEvent* ev) | ||
| { | ||
| if (mMatchPositions.empty()) | ||
| { | ||
| QLabel::paintEvent(ev); | ||
| return; | ||
| } | ||
| QPainter painter(this); | ||
| mMetrics = new QFontMetrics(font()); | ||
| int fw = mMetrics->horizontalAdvance(text()); | ||
| int fh = mMetrics->height(); | ||
| int rw = rect().width(); | ||
| int rh = rect().height(); | ||
| if (alignment() & Qt::AlignHCenter) | ||
| xText = (rw-fw) / 2; | ||
| else if (alignment() & Qt::AlignRight) | ||
| xText = rw - fw; | ||
| else | ||
| xText = 0; | ||
| if (alignment() & Qt::AlignVCenter) | ||
| yText = (rh-fh) / 2; | ||
| else if (alignment() & Qt::AlignBottom) | ||
| yText = rh - fh; | ||
| else | ||
| yText = 0; | ||
| if (autoFillBackground()) | ||
| painter.fillRect(rect(),palette().color(QPalette::Background)); | ||
| int p0 = 0; | ||
| for (QPair<int,int> p1 : mMatchPositions) | ||
| { | ||
| drawSubstring(painter, p0, p1.first-p0, false); | ||
| drawSubstring(painter, p1.first, p1.second, true); | ||
| p0 = p1.first + p1.second; | ||
| } | ||
| if (p0 < text().size()) | ||
| drawSubstring(painter, p0, text().size()-p0, false); | ||
| delete mMetrics; | ||
| } | ||
|
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| void SearchableLabel::drawSubstring(QPainter& painter, int pos, int len, bool hilite) | ||
| { | ||
| if (len <= 0) return; | ||
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| QColor storeColor = painter.pen().color(); | ||
| QString sub = text().mid(pos,len); | ||
| int fw = mMetrics->horizontalAdvance(sub); | ||
| int fh = mMetrics->height(); | ||
| if (hilite) | ||
| { | ||
| painter.setPen(QColor(255, 252, 240)); | ||
| painter.fillRect(xText,yText-sHiliteOffset,fw,fh+2*sHiliteOffset,QBrush(QColor(33, 66, 133))); | ||
| } | ||
| painter.drawText(xText,yText,fw,fh,0,sub); | ||
| xText += fw; | ||
| if (hilite) | ||
| { | ||
| painter.setPen(storeColor); | ||
| } | ||
| } | ||
|
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| bool SearchableLabel::exactWordMatch(int pos, int len) const | ||
| { | ||
| if (pos && !text().at(pos-1).isSpace()) return false; | ||
| if (pos + len < text().size() && !text().at(pos+len).isSpace()) return false; | ||
| return true; | ||
| } | ||
|
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| bool SearchableLabel::hasMatch() const | ||
| { | ||
| return !mMatchPositions.isEmpty(); | ||
| } | ||
|
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| void SearchableLabel::handleSearchChanged(const QString& string, int option) | ||
| { | ||
| mMatchPositions.clear(); | ||
| SearchOptions opts(option); | ||
| Qt::CaseSensitivity cs = opts.isCaseSensitive() ? Qt::CaseSensitive : Qt::CaseInsensitive; | ||
| if (!string.isEmpty()) | ||
| { | ||
| int pos = 0; | ||
| if (opts.isRegularExpression()) | ||
| { | ||
| // Regular expression search | ||
| QRegularExpression regexp(opts.isExactMatch() ? "\\b" + string + "\\b" : string, | ||
| opts.isCaseSensitive() ? QRegularExpression::NoPatternOption : QRegularExpression::CaseInsensitiveOption); | ||
| if (regexp.isValid()) | ||
| { | ||
| QRegularExpressionMatch rmatch; | ||
| while (pos >= 0) | ||
| { | ||
| pos = text().indexOf(regexp,pos,&rmatch); | ||
| if (pos >= 0) | ||
| { | ||
| mMatchPositions.append(qMakePair(pos,rmatch.captured().size())); | ||
| ++pos; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| else | ||
| { | ||
| // String search | ||
| while (pos >= 0) | ||
| { | ||
| pos = text().indexOf(string,pos,cs); | ||
| if (pos >= 0) | ||
| { | ||
| if (!opts.isExactMatch() || exactWordMatch(pos,string.size())) | ||
| mMatchPositions.append(qMakePair(pos,string.size())); | ||
| ++pos; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| update(); | ||
| } | ||
| } |