117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
#include <QStandardItemModel>
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#include <QApplication>
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#include <QDebug>
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#include <QHeaderView>
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#include "ecombobox.h"
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#include "qad_types.h"
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class EModel: public QStandardItemModel {
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public:
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EModel(QObject * parent = 0): QStandardItemModel(parent) {
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#if QT_VERSION < 0x050000
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setSupportedDragActions(Qt::MoveAction);
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#endif
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}
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protected:
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virtual Qt::ItemFlags flags(const QModelIndex & index) const {
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Qt::ItemFlags f = Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsDragEnabled;
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if (!index.isValid()) f |= Qt::ItemIsDropEnabled;
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return f;
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}
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#if QT_VERSION >= 0x050000
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Qt::DropActions supportedDragActions() const {return Qt::MoveAction;}
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#endif
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};
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EComboBox::EComboBox(QWidget * parent): QComboBox(parent) {
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setView(&iv);
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setModel(new EModel());
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iv.setTextElideMode(Qt::ElideMiddle);
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iv.setRootIsDecorated(false);
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iv.setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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iv.setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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iv.setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
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iv.setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
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iv.setMinimumHeight(100);
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icon.setPixmap(QPixmap(":/icons/edit-find.png"));
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icon.setScaledContents(true);
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icon.setFixedSize(preferredIconSize(1.2, this));
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ifont = nfont = font();
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ifont.setItalic(true);
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#if QT_VERSION >= 0x040700
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filter.setPlaceholderText(tr("Filter"));
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filter.setFont(ifont);
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#endif
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header.setAutoFillBackground(true);
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header.setLayout(new QBoxLayout(QBoxLayout::LeftToRight));
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header.layout()->setSpacing(2);
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header.layout()->setContentsMargins(2, 0, 0, 0);
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header.layout()->addWidget(&icon);
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header.layout()->addWidget(&filter);
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header.setParent(iv.header());
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connect(&filter, SIGNAL(textChanged(QString)), this, SLOT(filterChanged(QString)));
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}
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QSize EComboBox::sizeHint() const {
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QSize s = QComboBox::sizeHint();
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s.setWidth(s.width() + 16);
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return s;
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}
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void EComboBox::showPopup() {
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iv.setDragDropMode(isEditable() ? QAbstractItemView::InternalMove : QAbstractItemView::NoDragDrop);
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filterChanged(filter.text(), true);
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QComboBox::showPopup();
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QRect r = iv.header()->rect();
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header.setGeometry(r.x(), r.y(), r.width(), r.height() - 1);
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filter.setFocus();
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}
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void EComboBox::changeEvent(QEvent * e) {
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QComboBox::changeEvent(e);
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switch (e->type()) {
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case QEvent::LanguageChange:
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#if QT_VERSION >= 0x040700
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filter.setPlaceholderText(tr("Filter"));
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#endif
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break;
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default:
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break;
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}
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}
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void EComboBox::filterChanged(const QString & text, bool first) {
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if (filter.text().isEmpty()) filter.setFont(ifont);
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else filter.setFont(nfont);
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iv.hide();
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QModelIndex pi = iv.rootIndex();
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if (text.isEmpty()) {
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for (int i = 0; i < iv.model()->rowCount(); ++i) {
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iv.setRowHidden(i, pi, false);
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iv.model()->setData(iv.model()->index(i, 0), iv.model()->index(i, 0, pi).data().toString(), Qt::ToolTipRole);
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}
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iv.show();
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if (first) return;
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hidePopup();
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showPopup();
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qApp->processEvents();
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QRect r = iv.header()->rect();
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header.setGeometry(r.x(), r.y(), r.width(), r.height() - 1);
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return;
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}
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for (int i = 0; i < iv.model()->rowCount(); ++i) {
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iv.setRowHidden(i, pi, !iv.model()->index(i, 0, pi).data().toString().contains(QRegExp(text, Qt::CaseInsensitive)));
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iv.model()->setData(iv.model()->index(i, 0), iv.model()->index(i, 0, pi).data().toString(), Qt::ToolTipRole);
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}
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iv.show();
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qApp->processEvents();
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QRect r = iv.header()->rect();
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header.setGeometry(r.x(), r.y(), r.width(), r.height() - 1);
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}
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