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Diffstat (limited to 'examples/widgets/itemviews/chart/pieview.h')
-rw-r--r-- | examples/widgets/itemviews/chart/pieview.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/examples/widgets/itemviews/chart/pieview.h b/examples/widgets/itemviews/chart/pieview.h new file mode 100644 index 0000000000..208159bf73 --- /dev/null +++ b/examples/widgets/itemviews/chart/pieview.h @@ -0,0 +1,114 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef PIEVIEW_H +#define PIEVIEW_H + +#include <QAbstractItemView> +#include <QFont> +#include <QItemSelection> +#include <QItemSelectionModel> +#include <QModelIndex> +#include <QRect> +#include <QSize> +#include <QPoint> +#include <QWidget> + +QT_BEGIN_NAMESPACE +class QRubberBand; +QT_END_NAMESPACE + +//! [0] +class PieView : public QAbstractItemView +{ + Q_OBJECT + +public: + PieView(QWidget *parent = 0); + + QRect visualRect(const QModelIndex &index) const; + void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible); + QModelIndex indexAt(const QPoint &point) const; + +protected slots: + void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> & = QVector<int>()); + void rowsInserted(const QModelIndex &parent, int start, int end); + void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end); + +protected: + bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event); + QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction, + Qt::KeyboardModifiers modifiers); + + int horizontalOffset() const; + int verticalOffset() const; + + bool isIndexHidden(const QModelIndex &index) const; + + void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command); + + void mousePressEvent(QMouseEvent *event); + + void mouseMoveEvent(QMouseEvent *event); + void mouseReleaseEvent(QMouseEvent *event); + + void paintEvent(QPaintEvent *event); + void resizeEvent(QResizeEvent *event); + void scrollContentsBy(int dx, int dy); + + QRegion visualRegionForSelection(const QItemSelection &selection) const; + +private: + QRect itemRect(const QModelIndex &item) const; + QRegion itemRegion(const QModelIndex &index) const; + int rows(const QModelIndex &index = QModelIndex()) const; + void updateGeometries(); + + int margin; + int totalSize; + int pieSize; + int validItems; + double totalValue; + QPoint origin; + QRubberBand *rubberBand; +}; +//! [0] + +#endif |