Doc: drop Application Chooser Example
There are plenty of other examples showing how to use QStateMachine Task-number: QTBUG-60635 Change-Id: I82300b2a0f4e7733f08579a2aa9b548cb7d87efa Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io> Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
This commit is contained in:
Nico Vertriest
Frederik Gladhorn
parent
b00feb8cfc
commit
64298b42a3
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subdirs
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subdirs
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SUBDIRS += \
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SUBDIRS += \
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animatedtiles \
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animatedtiles \
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appchooser \
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easing \
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easing \
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moveblocks \
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moveblocks \
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states \
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states \
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QT += widgets
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SOURCES = main.cpp
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RESOURCES = appchooser.qrc
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# install
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target.path = $$[QT_INSTALL_EXAMPLES]/widgets/animation/appchooser
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INSTALLS += target
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<!DOCTYPE RCC><RCC version="1.0">
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<qresource>
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<file>accessories-dictionary.png</file>
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<file>akregator.png</file>
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<file>digikam.png</file>
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<file>k3b.png</file>
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</qresource>
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</RCC>
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/****************************************************************************
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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 QtCore module 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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#include <QtCore>
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#include <QtWidgets>
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class Pixmap : public QGraphicsWidget
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{
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Q_OBJECT
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public:
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Pixmap(const QPixmap &pix, QGraphicsItem *parent = 0)
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: QGraphicsWidget(parent), orig(pix), p(pix)
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{
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}
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) override
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{
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painter->drawPixmap(QPointF(), p);
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}
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void mousePressEvent(QGraphicsSceneMouseEvent *) override
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{
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emit clicked();
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}
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void setGeometry(const QRectF &rect) override
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{
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QGraphicsWidget::setGeometry(rect);
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if (rect.size().width() > orig.size().width())
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p = orig.scaled(rect.size().toSize());
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else
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p = orig;
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}
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Q_SIGNALS:
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void clicked();
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private:
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QPixmap orig;
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QPixmap p;
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};
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class GraphicsView : public QGraphicsView
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{
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Q_OBJECT
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public:
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GraphicsView(QGraphicsScene *scene, QWidget *parent = 0) : QGraphicsView(scene, parent)
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{
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}
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void resizeEvent(QResizeEvent *) override
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{
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fitInView(sceneRect(), Qt::KeepAspectRatio);
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}
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};
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void createStates(const QObjectList &objects,
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const QRect &selectedRect, QState *parent)
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{
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for (int i = 0; i < objects.size(); ++i) {
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QState *state = new QState(parent);
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state->assignProperty(objects.at(i), "geometry", selectedRect);
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parent->addTransition(objects.at(i), SIGNAL(clicked()), state);
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}
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}
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void createAnimations(const QObjectList &objects, QStateMachine *machine)
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{
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for (int i=0; i<objects.size(); ++i)
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machine->addDefaultAnimation(new QPropertyAnimation(objects.at(i), "geometry"));
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}
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int main(int argc, char **argv)
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{
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Q_INIT_RESOURCE(appchooser);
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QApplication app(argc, argv);
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Pixmap *p1 = new Pixmap(QPixmap(":/digikam.png"));
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Pixmap *p2 = new Pixmap(QPixmap(":/akregator.png"));
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Pixmap *p3 = new Pixmap(QPixmap(":/accessories-dictionary.png"));
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Pixmap *p4 = new Pixmap(QPixmap(":/k3b.png"));
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p1->setObjectName("p1");
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p2->setObjectName("p2");
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p3->setObjectName("p3");
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p4->setObjectName("p4");
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p1->setGeometry(QRectF( 0.0, 0.0, 64.0, 64.0));
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p2->setGeometry(QRectF(236.0, 0.0, 64.0, 64.0));
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p3->setGeometry(QRectF(236.0, 236.0, 64.0, 64.0));
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p4->setGeometry(QRectF( 0.0, 236.0, 64.0, 64.0));
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QGraphicsScene scene(0, 0, 300, 300);
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scene.setBackgroundBrush(Qt::white);
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scene.addItem(p1);
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scene.addItem(p2);
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scene.addItem(p3);
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scene.addItem(p4);
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GraphicsView window(&scene);
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window.setFrameStyle(0);
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window.setAlignment(Qt::AlignLeft | Qt::AlignTop);
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window.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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window.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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QStateMachine machine;
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machine.setGlobalRestorePolicy(QState::RestoreProperties);
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QState *group = new QState(&machine);
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group->setObjectName("group");
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QRect selectedRect(86, 86, 128, 128);
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QState *idleState = new QState(group);
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group->setInitialState(idleState);
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QObjectList objects;
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objects << p1 << p2 << p3 << p4;
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createStates(objects, selectedRect, group);
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createAnimations(objects, &machine);
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machine.setInitialState(group);
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machine.start();
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window.resize(300, 300);
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window.show();
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return app.exec();
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}
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#include "main.moc"
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@ -1,38 +0,0 @@
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/****************************************************************************
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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 documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:FDL$
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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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** GNU Free Documentation License Usage
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** Alternatively, this file may be used under the terms of the GNU Free
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** Documentation License version 1.3 as published by the Free Software
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** Foundation and appearing in the file included in the packaging of
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** this file. Please review the following information to ensure
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** the GNU Free Documentation License version 1.3 requirements
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** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/*!
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\example animation/appchooser
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\title Application Chooser Example
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\brief The Application Chooser example shows how to use the Qt state
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machine and the animation framework to select between
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applications.
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\image appchooser-example.png
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*/
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