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Viewing changes to examples/widgets/painting/transformations/window.cpp

  • Committer: Grevutiu Gabriel
  • Date: 2017-06-13 08:43:17 UTC
  • Revision ID: gabriel1984sibiu@gmail.com-20170613084317-ek0zqe0u9g3ocvi8
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examples/widgets/painting/transformations/window.cpp
 
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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 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
 
12
** Software or, alternatively, in accordance with the terms contained in
 
13
** a written agreement between you and The Qt Company. For licensing terms
 
14
** 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 "window.h"
 
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#include <QComboBox>
 
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#include <QGridLayout>
 
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//! [0]
 
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Window::Window()
 
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{
 
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    originalRenderArea = new RenderArea;
 
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    shapeComboBox = new QComboBox;
 
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    shapeComboBox->addItem(tr("Clock"));
 
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    shapeComboBox->addItem(tr("House"));
 
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    shapeComboBox->addItem(tr("Text"));
 
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    shapeComboBox->addItem(tr("Truck"));
 
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    QGridLayout *layout = new QGridLayout;
 
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    layout->addWidget(originalRenderArea, 0, 0);
 
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    layout->addWidget(shapeComboBox, 1, 0);
 
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//! [0]
 
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//! [1]
 
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    for (int i = 0; i < NumTransformedAreas; ++i) {
 
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        transformedRenderAreas[i] = new RenderArea;
 
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        operationComboBoxes[i] = new QComboBox;
 
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        operationComboBoxes[i]->addItem(tr("No transformation"));
 
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        operationComboBoxes[i]->addItem(tr("Rotate by 60\xC2\xB0"));
 
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        operationComboBoxes[i]->addItem(tr("Scale to 75%"));
 
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        operationComboBoxes[i]->addItem(tr("Translate by (50, 50)"));
 
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        connect(operationComboBoxes[i], SIGNAL(activated(int)),
 
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                this, SLOT(operationChanged()));
 
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        layout->addWidget(transformedRenderAreas[i], 0, i + 1);
 
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        layout->addWidget(operationComboBoxes[i], 1, i + 1);
 
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    }
 
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//! [1]
 
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//! [2]
 
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    setLayout(layout);
 
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    setupShapes();
 
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    shapeSelected(0);
 
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    setWindowTitle(tr("Transformations"));
 
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}
 
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//! [2]
 
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//! [3]
 
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void Window::setupShapes()
 
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{
 
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    QPainterPath truck;
 
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//! [3]
 
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    truck.setFillRule(Qt::WindingFill);
 
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    truck.moveTo(0.0, 87.0);
 
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    truck.lineTo(0.0, 60.0);
 
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    truck.lineTo(10.0, 60.0);
 
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    truck.lineTo(35.0, 35.0);
 
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    truck.lineTo(100.0, 35.0);
 
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    truck.lineTo(100.0, 87.0);
 
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    truck.lineTo(0.0, 87.0);
 
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    truck.moveTo(17.0, 60.0);
 
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    truck.lineTo(55.0, 60.0);
 
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    truck.lineTo(55.0, 40.0);
 
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    truck.lineTo(37.0, 40.0);
 
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    truck.lineTo(17.0, 60.0);
 
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    truck.addEllipse(17.0, 75.0, 25.0, 25.0);
 
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    truck.addEllipse(63.0, 75.0, 25.0, 25.0);
 
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//! [4]
 
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    QPainterPath clock;
 
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//! [4]
 
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    clock.addEllipse(-50.0, -50.0, 100.0, 100.0);
 
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    clock.addEllipse(-48.0, -48.0, 96.0, 96.0);
 
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    clock.moveTo(0.0, 0.0);
 
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    clock.lineTo(-2.0, -2.0);
 
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    clock.lineTo(0.0, -42.0);
 
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    clock.lineTo(2.0, -2.0);
 
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    clock.lineTo(0.0, 0.0);
 
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    clock.moveTo(0.0, 0.0);
 
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    clock.lineTo(2.732, -0.732);
 
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    clock.lineTo(24.495, 14.142);
 
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    clock.lineTo(0.732, 2.732);
 
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    clock.lineTo(0.0, 0.0);
 
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//! [5]
 
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    QPainterPath house;
 
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//! [5]
 
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    house.moveTo(-45.0, -20.0);
 
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    house.lineTo(0.0, -45.0);
 
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    house.lineTo(45.0, -20.0);
 
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    house.lineTo(45.0, 45.0);
 
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    house.lineTo(-45.0, 45.0);
 
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    house.lineTo(-45.0, -20.0);
 
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    house.addRect(15.0, 5.0, 20.0, 35.0);
 
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    house.addRect(-35.0, -15.0, 25.0, 25.0);
 
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//! [6]
 
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    QPainterPath text;
 
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//! [6]
 
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    QFont font;
 
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    font.setPixelSize(50);
 
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    QRect fontBoundingRect = QFontMetrics(font).boundingRect(tr("Qt"));
 
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    text.addText(-QPointF(fontBoundingRect.center()), font, tr("Qt"));
 
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//! [7]
 
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    shapes.append(clock);
 
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    shapes.append(house);
 
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    shapes.append(text);
 
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    shapes.append(truck);
 
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    connect(shapeComboBox, SIGNAL(activated(int)), this, SLOT(shapeSelected(int)));
 
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}
 
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//! [7]
 
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//! [8]
 
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void Window::operationChanged()
 
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{
 
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    static const Operation operationTable[] = {
 
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        NoTransformation, Rotate, Scale, Translate
 
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    };
 
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    QList<Operation> operations;
 
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    for (int i = 0; i < NumTransformedAreas; ++i) {
 
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        int index = operationComboBoxes[i]->currentIndex();
 
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        operations.append(operationTable[index]);
 
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        transformedRenderAreas[i]->setOperations(operations);
 
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    }
 
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}
 
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//! [8]
 
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//! [9]
 
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void Window::shapeSelected(int index)
 
184
{
 
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    QPainterPath shape = shapes[index];
 
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    originalRenderArea->setShape(shape);
 
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    for (int i = 0; i < NumTransformedAreas; ++i)
 
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        transformedRenderAreas[i]->setShape(shape);
 
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}
 
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//! [9]