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131 lines
4.6 KiB
Python
131 lines
4.6 KiB
Python
#!/usr/bin/env python
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#############################################################################
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##
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## Copyright (C) 2013 Riverbank Computing Limited.
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## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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## All rights reserved.
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##
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## This file is part of the examples of PyQt.
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##
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## $QT_BEGIN_LICENSE:BSD$
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## You may use this file under the terms of the BSD license 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 Nokia Corporation and its Subsidiary(-ies) nor
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## the names of its contributors may be used to endorse or promote
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## products derived from this software without specific prior written
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## permission.
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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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## $QT_END_LICENSE$
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##
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#############################################################################
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from PyQt5.QtCore import QSizeF, Qt
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from PyQt5.QtWidgets import (QApplication, QGraphicsAnchorLayout,
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QGraphicsProxyWidget, QGraphicsScene, QGraphicsView, QGraphicsWidget,
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QPushButton, QSizePolicy)
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def createItem(minimum, preferred, maximum, name):
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w = QGraphicsProxyWidget()
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w.setWidget(QPushButton(name))
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w.setMinimumSize(minimum)
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w.setPreferredSize(preferred)
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w.setMaximumSize(maximum)
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w.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
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return w
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if __name__ == '__main__':
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import sys
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app = QApplication(sys.argv)
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scene = QGraphicsScene()
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scene.setSceneRect(0, 0, 800, 480)
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minSize = QSizeF(30, 100)
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prefSize = QSizeF(210, 100)
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maxSize = QSizeF(300, 100)
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a = createItem(minSize, prefSize, maxSize, "A")
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b = createItem(minSize, prefSize, maxSize, "B")
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c = createItem(minSize, prefSize, maxSize, "C")
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d = createItem(minSize, prefSize, maxSize, "D")
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e = createItem(minSize, prefSize, maxSize, "E")
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f = createItem(QSizeF(30, 50), QSizeF(150, 50), maxSize, "F")
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g = createItem(QSizeF(30, 50), QSizeF(30, 100), maxSize, "G")
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l = QGraphicsAnchorLayout()
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l.setSpacing(0)
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w = QGraphicsWidget(None, Qt.Window)
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w.setPos(20, 20)
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w.setLayout(l)
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# Vertical.
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l.addAnchor(a, Qt.AnchorTop, l, Qt.AnchorTop)
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l.addAnchor(b, Qt.AnchorTop, l, Qt.AnchorTop)
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l.addAnchor(c, Qt.AnchorTop, a, Qt.AnchorBottom)
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l.addAnchor(c, Qt.AnchorTop, b, Qt.AnchorBottom)
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l.addAnchor(c, Qt.AnchorBottom, d, Qt.AnchorTop)
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l.addAnchor(c, Qt.AnchorBottom, e, Qt.AnchorTop)
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l.addAnchor(d, Qt.AnchorBottom, l, Qt.AnchorBottom)
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l.addAnchor(e, Qt.AnchorBottom, l, Qt.AnchorBottom)
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l.addAnchor(c, Qt.AnchorTop, f, Qt.AnchorTop)
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l.addAnchor(c, Qt.AnchorVerticalCenter, f, Qt.AnchorBottom)
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l.addAnchor(f, Qt.AnchorBottom, g, Qt.AnchorTop)
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l.addAnchor(c, Qt.AnchorBottom, g, Qt.AnchorBottom)
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# Horizontal.
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l.addAnchor(l, Qt.AnchorLeft, a, Qt.AnchorLeft)
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l.addAnchor(l, Qt.AnchorLeft, d, Qt.AnchorLeft)
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l.addAnchor(a, Qt.AnchorRight, b, Qt.AnchorLeft)
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l.addAnchor(a, Qt.AnchorRight, c, Qt.AnchorLeft)
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l.addAnchor(c, Qt.AnchorRight, e, Qt.AnchorLeft)
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l.addAnchor(b, Qt.AnchorRight, l, Qt.AnchorRight)
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l.addAnchor(e, Qt.AnchorRight, l, Qt.AnchorRight)
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l.addAnchor(d, Qt.AnchorRight, e, Qt.AnchorLeft)
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l.addAnchor(l, Qt.AnchorLeft, f, Qt.AnchorLeft)
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l.addAnchor(l, Qt.AnchorLeft, g, Qt.AnchorLeft)
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l.addAnchor(f, Qt.AnchorRight, g, Qt.AnchorRight)
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scene.addItem(w)
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scene.setBackgroundBrush(Qt.darkGreen)
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view = QGraphicsView(scene)
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view.show()
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sys.exit(app.exec_())
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