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Diffstat (limited to 'examples/widgets/graphicsview/flowlayout/flowlayout.h')
-rw-r--r-- | examples/widgets/graphicsview/flowlayout/flowlayout.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/examples/widgets/graphicsview/flowlayout/flowlayout.h b/examples/widgets/graphicsview/flowlayout/flowlayout.h new file mode 100644 index 0000000000..751e435ec0 --- /dev/null +++ b/examples/widgets/graphicsview/flowlayout/flowlayout.h @@ -0,0 +1,76 @@ +/**************************************************************************** +** +** 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets/qgraphicslayout.h> + +class FlowLayout : public QGraphicsLayout +{ +public: + FlowLayout(); + inline void addItem(QGraphicsLayoutItem *item); + void insertItem(int index, QGraphicsLayoutItem *item); + void setSpacing(Qt::Orientations o, qreal spacing); + qreal spacing(Qt::Orientation o) const; + + // inherited functions + void setGeometry(const QRectF &geom); + + int count() const; + QGraphicsLayoutItem *itemAt(int index) const; + void removeAt(int index); + +protected: + QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const; + +private: + qreal doLayout(const QRectF &geom, bool applyNewGeometry) const; + QSizeF minSize(const QSizeF &constraint) const; + QSizeF prefSize() const; + QSizeF maxSize() const; + + QList<QGraphicsLayoutItem*> m_items; + qreal m_spacing[2]; +}; + + +inline void FlowLayout::addItem(QGraphicsLayoutItem *item) +{ + insertItem(-1, item); +} |