107 lines
2.3 KiB
C++
107 lines
2.3 KiB
C++
#pragma once
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#include <QListView>
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#include <QStyledItemDelegate>
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#include <QEvent>
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#include <QScrollBar>
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class BasePage;
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const int pageIconSize = 24;
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class PageViewDelegate : public QStyledItemDelegate
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{
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public:
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PageViewDelegate(QObject *parent) : QStyledItemDelegate(parent)
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{
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}
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QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QSize size = QStyledItemDelegate::sizeHint(option, index);
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size.setHeight(qMax(size.height(), 32));
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return size;
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}
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};
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class PageModel : public QAbstractListModel
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{
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public:
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PageModel(QObject *parent = 0) : QAbstractListModel(parent)
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{
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QPixmap empty(pageIconSize, pageIconSize);
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empty.fill(Qt::transparent);
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m_emptyIcon = QIcon(empty);
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}
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virtual ~PageModel() {};
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int rowCount(const QModelIndex &parent = QModelIndex()) const
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{
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return parent.isValid() ? 0 : m_pages.size();
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}
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QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const
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{
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switch (role)
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{
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case Qt::DisplayRole:
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return m_pages.at(index.row())->displayName();
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case Qt::DecorationRole:
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{
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QIcon icon = m_pages.at(index.row())->icon();
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if (icon.isNull())
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icon = m_emptyIcon;
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return icon;
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}
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}
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return QVariant();
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}
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void setPages(const QList<BasePage *> &pages)
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{
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beginResetModel();
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m_pages = pages;
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endResetModel();
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}
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const QList<BasePage *> &pages() const
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{
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return m_pages;
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}
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BasePage * findPageEntryById(QString id)
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{
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for(auto page: m_pages)
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{
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if (page->id() == id)
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return page;
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}
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return nullptr;
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}
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QList<BasePage *> m_pages;
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QIcon m_emptyIcon;
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};
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class PageView : public QListView
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{
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public:
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PageView(QWidget *parent = 0) : QListView(parent)
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{
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setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Expanding);
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setItemDelegate(new PageViewDelegate(this));
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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}
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virtual QSize sizeHint() const
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{
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int width = sizeHintForColumn(0) + frameWidth() * 2 + 5;
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if (verticalScrollBar()->isVisible())
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width += verticalScrollBar()->width();
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return QSize(width, 100);
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}
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virtual bool eventFilter(QObject *obj, QEvent *event)
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{
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if (obj == verticalScrollBar() &&
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(event->type() == QEvent::Show || event->type() == QEvent::Hide))
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updateGeometry();
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return QListView::eventFilter(obj, event);
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}
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};
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