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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include "window.h" |
| |
| #include <QComboBox> |
| #include <QGridLayout> |
| |
| //! [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\xC2\xB0")); |
| operationComboBoxes[i]->addItem(tr("Scale to 75%")); |
| operationComboBoxes[i]->addItem(tr("Translate by (50, 50)")); |
| |
| connect(operationComboBoxes[i], QOverload<int>::of(&QComboBox::activated), |
| this, &Window::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, QOverload<int>::of(&QComboBox::activated), |
| this, &Window::shapeSelected); |
| } |
| //! [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] |