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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QCOLUMNVIEW_P_H
#define QCOLUMNVIEW_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include "qcolumnview.h"
#include <private/qabstractitemview_p.h>
#include <QtCore/qabstractitemmodel.h>
#if QT_CONFIG(animation)
#include <QtCore/qpropertyanimation.h>
#endif
#include <QtWidgets/qabstractitemdelegate.h>
#include <QtWidgets/qabstractitemview.h>
#include <QtWidgets/qstyleditemdelegate.h>
#include <qlistview.h>
#include <qevent.h>
#include <qscrollbar.h>
#include <vector>
QT_REQUIRE_CONFIG(columnview);
QT_BEGIN_NAMESPACE
class QColumnViewPreviewColumn : public QAbstractItemView {
public:
explicit QColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(nullptr) {
}
void setPreviewWidget(QWidget *widget) {
previewWidget = widget;
setMinimumWidth(previewWidget->minimumWidth());
}
void resizeEvent(QResizeEvent * event) override{
if (!previewWidget)
return;
previewWidget->resize(
qMax(previewWidget->minimumWidth(), event->size().width()),
previewWidget->height());
QSize p = viewport()->size();
QSize v = previewWidget->size();
horizontalScrollBar()->setRange(0, v.width() - p.width());
horizontalScrollBar()->setPageStep(p.width());
verticalScrollBar()->setRange(0, v.height() - p.height());
verticalScrollBar()->setPageStep(p.height());
QAbstractScrollArea::resizeEvent(event);
}
void scrollContentsBy(int dx, int dy) override
{
if (!previewWidget)
return;
scrollDirtyRegion(dx, dy);
viewport()->scroll(dx, dy);
QAbstractItemView::scrollContentsBy(dx, dy);
}
QRect visualRect(const QModelIndex &) const override
{
return QRect();
}
void scrollTo(const QModelIndex &, ScrollHint) override
{
}
QModelIndex indexAt(const QPoint &) const override
{
return QModelIndex();
}
QModelIndex moveCursor(CursorAction, Qt::KeyboardModifiers) override
{
return QModelIndex();
}
int horizontalOffset () const override {
return 0;
}
int verticalOffset () const override {
return 0;
}
QRegion visualRegionForSelection(const QItemSelection &) const override
{
return QRegion();
}
bool isIndexHidden(const QModelIndex &) const override
{
return false;
}
void setSelection(const QRect &, QItemSelectionModel::SelectionFlags) override
{
}
private:
QWidget *previewWidget;
};
class Q_AUTOTEST_EXPORT QColumnViewPrivate : public QAbstractItemViewPrivate
{
Q_DECLARE_PUBLIC(QColumnView)
public:
QColumnViewPrivate();
~QColumnViewPrivate();
void initialize();
void clearConnections();
QAbstractItemView *createColumn(const QModelIndex &index, bool show);
void updateScrollbars();
void closeColumns(const QModelIndex &parent = QModelIndex(), bool build = false);
void disconnectView(QAbstractItemView *view);
void doLayout();
void setPreviewWidget(QWidget *widget);
void checkColumnCreation(const QModelIndex &parent);
void gripMoved(int offset);
void changeCurrentColumn();
void clicked(const QModelIndex &index);
void columnsInserted(const QModelIndex &parent, int start, int end) override;
QList<QAbstractItemView*> columns;
QList<int> columnSizes; // used during init and corner moving
bool showResizeGrips;
int offset;
#if QT_CONFIG(animation)
QPropertyAnimation currentAnimation;
QMetaObject::Connection animationConnection;
#endif
std::vector<QMetaObject::Connection> gripConnections;
using ViewConnections = std::vector<QMetaObject::Connection>;
QHash<QAbstractItemView *, ViewConnections> viewConnections;
QWidget *previewWidget;
QAbstractItemView *previewColumn;
};
/*!
* This is a delegate that will paint the triangle
*/
class QColumnViewDelegate : public QStyledItemDelegate
{
public:
explicit QColumnViewDelegate(QObject *parent = nullptr) : QStyledItemDelegate(parent) {}
~QColumnViewDelegate() {}
void paint(QPainter *painter,
const QStyleOptionViewItem &option,
const QModelIndex &index) const override;
};
QT_END_NAMESPACE
#endif //QCOLUMNVIEW_P_H
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