29c99bddbf
Task-number: QTBUG-84469 Change-Id: Id14119168bb1bf11f99bda7ef6ee9cf51bcfab2e Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
114 lines
4.4 KiB
C++
114 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef PIEVIEW_H
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#define PIEVIEW_H
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#include <QAbstractItemView>
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//! [0]
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class PieView : public QAbstractItemView
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{
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Q_OBJECT
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public:
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PieView(QWidget *parent = nullptr);
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QRect visualRect(const QModelIndex &index) const override;
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void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) override;
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QModelIndex indexAt(const QPoint &point) const override;
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protected slots:
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void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
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const QList<int> &roles = QList<int>()) override;
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void rowsInserted(const QModelIndex &parent, int start, int end) override;
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void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) override;
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protected:
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bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event) override;
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QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction,
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Qt::KeyboardModifiers modifiers) override;
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int horizontalOffset() const override;
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int verticalOffset() const override;
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bool isIndexHidden(const QModelIndex &index) const override;
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void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command) override;
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void mousePressEvent(QMouseEvent *event) override;
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void mouseMoveEvent(QMouseEvent *event) override;
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void mouseReleaseEvent(QMouseEvent *event) override;
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void paintEvent(QPaintEvent *event) override;
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void resizeEvent(QResizeEvent *event) override;
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void scrollContentsBy(int dx, int dy) override;
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QRegion visualRegionForSelection(const QItemSelection &selection) const override;
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private:
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QRect itemRect(const QModelIndex &item) const;
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QRegion itemRegion(const QModelIndex &index) const;
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int rows(const QModelIndex &index = QModelIndex()) const;
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void updateGeometries() override;
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int margin = 0;
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int totalSize = 300;
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int pieSize = totalSize - 2 * margin;
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int validItems = 0;
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double totalValue = 0.0;
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QRubberBand *rubberBand = nullptr;
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QPoint origin;
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};
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//! [0]
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#endif // PIEVIEW_H
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