examples/painting/transformations/window.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/painting/transformations/window.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,181 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "window.h"
+
+//! [0]
+Window::Window()
+{
+    originalRenderArea = new RenderArea;
+
+    shapeComboBox = new QComboBox;
+    shapeComboBox->addItem(tr("Clock"));
+    shapeComboBox->addItem(tr("House"));
+    shapeComboBox->addItem(tr("Text"));
+    shapeComboBox->addItem(tr("Truck"));
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(originalRenderArea, 0, 0);
+    layout->addWidget(shapeComboBox, 1, 0);
+//! [0]
+
+//! [1]
+    for (int i = 0; i < NumTransformedAreas; ++i) {
+        transformedRenderAreas[i] = new RenderArea;
+
+        operationComboBoxes[i] = new QComboBox;
+        operationComboBoxes[i]->addItem(tr("No transformation"));
+        operationComboBoxes[i]->addItem(tr("Rotate by 60\xB0"));
+        operationComboBoxes[i]->addItem(tr("Scale to 75%"));
+        operationComboBoxes[i]->addItem(tr("Translate by (50, 50)"));
+
+        connect(operationComboBoxes[i], SIGNAL(activated(int)),
+                this, SLOT(operationChanged()));
+
+        layout->addWidget(transformedRenderAreas[i], 0, i + 1);
+        layout->addWidget(operationComboBoxes[i], 1, i + 1);
+    }
+//! [1]
+
+//! [2]
+    setLayout(layout);
+    setupShapes();
+    shapeSelected(0);
+
+    setWindowTitle(tr("Transformations"));
+}
+//! [2]
+
+//! [3]
+void Window::setupShapes()
+{
+    QPainterPath truck;
+//! [3]
+    truck.setFillRule(Qt::WindingFill);
+    truck.moveTo(0.0, 87.0);
+    truck.lineTo(0.0, 60.0);
+    truck.lineTo(10.0, 60.0);
+    truck.lineTo(35.0, 35.0);
+    truck.lineTo(100.0, 35.0);
+    truck.lineTo(100.0, 87.0);
+    truck.lineTo(0.0, 87.0);
+    truck.moveTo(17.0, 60.0);
+    truck.lineTo(55.0, 60.0);
+    truck.lineTo(55.0, 40.0);
+    truck.lineTo(37.0, 40.0);
+    truck.lineTo(17.0, 60.0);
+    truck.addEllipse(17.0, 75.0, 25.0, 25.0);
+    truck.addEllipse(63.0, 75.0, 25.0, 25.0);
+
+//! [4]
+    QPainterPath clock;
+//! [4]
+    clock.addEllipse(-50.0, -50.0, 100.0, 100.0);
+    clock.addEllipse(-48.0, -48.0, 96.0, 96.0);
+    clock.moveTo(0.0, 0.0);
+    clock.lineTo(-2.0, -2.0);
+    clock.lineTo(0.0, -42.0);
+    clock.lineTo(2.0, -2.0);
+    clock.lineTo(0.0, 0.0);
+    clock.moveTo(0.0, 0.0);
+    clock.lineTo(2.732, -0.732);
+    clock.lineTo(24.495, 14.142);
+    clock.lineTo(0.732, 2.732);
+    clock.lineTo(0.0, 0.0);
+
+//! [5]
+    QPainterPath house;
+//! [5]
+    house.moveTo(-45.0, -20.0);
+    house.lineTo(0.0, -45.0);
+    house.lineTo(45.0, -20.0);
+    house.lineTo(45.0, 45.0);
+    house.lineTo(-45.0, 45.0);
+    house.lineTo(-45.0, -20.0);
+    house.addRect(15.0, 5.0, 20.0, 35.0);
+    house.addRect(-35.0, -15.0, 25.0, 25.0);
+
+//! [6]
+    QPainterPath text;
+//! [6]
+    QFont font;
+    font.setPixelSize(50);
+    QRect fontBoundingRect = QFontMetrics(font).boundingRect(tr("Qt"));
+    text.addText(-QPointF(fontBoundingRect.center()), font, tr("Qt"));
+
+//! [7]
+    shapes.append(clock);
+    shapes.append(house);
+    shapes.append(text);
+    shapes.append(truck);
+
+    connect(shapeComboBox, SIGNAL(activated(int)),
+            this, SLOT(shapeSelected(int)));
+}
+//! [7]
+
+//! [8]
+void Window::operationChanged()
+{
+    static const Operation operationTable[] = {
+        NoTransformation, Rotate, Scale, Translate
+    };
+
+    QList<Operation> operations;
+    for (int i = 0; i < NumTransformedAreas; ++i) {
+        int index = operationComboBoxes[i]->currentIndex();
+        operations.append(operationTable[index]);
+        transformedRenderAreas[i]->setOperations(operations);
+    }
+}
+//! [8]
+
+//! [9]
+void Window::shapeSelected(int index)
+{
+    QPainterPath shape = shapes[index];
+    originalRenderArea->setShape(shape);
+    for (int i = 0; i < NumTransformedAreas; ++i)
+        transformedRenderAreas[i]->setShape(shape);
+}
+//! [9]