37fcfba829
the speed increase here is noticable since the work of creating a regex object is only done once per session
39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
#include "noscrollcombobox.h"
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#include <QCompleter>
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NoScrollComboBox::NoScrollComboBox(QWidget *parent)
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: QComboBox(parent)
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{
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// Don't let scrolling hijack focus.
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setFocusPolicy(Qt::StrongFocus);
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// Make speed a priority when loading comboboxes.
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setMinimumContentsLength(24);// an arbitrary limit
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setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLengthWithIcon);
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// Allow items to be searched by any part of the word, displaying all matches.
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setEditable(true);// can set to false manually when using
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this->completer()->setCompletionMode(QCompleter::PopupCompletion);
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this->completer()->setFilterMode(Qt::MatchContains);
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static const QRegularExpression re("[^\\s]*");
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QValidator *validator = new QRegularExpressionValidator(re);
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this->setValidator(validator);
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}
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void NoScrollComboBox::wheelEvent(QWheelEvent *event)
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{
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// Only allow scrolling to modify contents when it explicitly has focus.
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if (hasFocus())
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QComboBox::wheelEvent(event);
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}
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void NoScrollComboBox::setTextItem(const QString &text)
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{
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int index = this->findText(text);
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if (index >= 0)
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this->setCurrentIndex(index);
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else
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this->setCurrentText(text);
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}
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