277 lines
8.9 KiB
C++
277 lines
8.9 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "view.h"
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#include <QtGui>
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#ifndef QT_NO_OPENGL
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#include <QtOpenGL>
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#endif
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#include <qmath.h>
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void GraphicsView::wheelEvent(QWheelEvent *e)
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{
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if (e->modifiers() & Qt::ControlModifier) {
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if (e->delta() > 0)
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view->zoomIn(6);
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else
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view->zoomOut(6);
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e->accept();
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} else {
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QGraphicsView::wheelEvent(e);
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}
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}
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View::View(const QString &name, QWidget *parent)
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: QFrame(parent)
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{
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setFrameStyle(Sunken | StyledPanel);
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graphicsView = new GraphicsView(this);
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graphicsView->setRenderHint(QPainter::Antialiasing, false);
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graphicsView->setDragMode(QGraphicsView::RubberBandDrag);
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graphicsView->setOptimizationFlags(QGraphicsView::DontSavePainterState);
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graphicsView->setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
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graphicsView->setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
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int size = style()->pixelMetric(QStyle::PM_ToolBarIconSize);
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QSize iconSize(size, size);
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QToolButton *zoomInIcon = new QToolButton;
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zoomInIcon->setAutoRepeat(true);
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zoomInIcon->setAutoRepeatInterval(33);
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zoomInIcon->setAutoRepeatDelay(0);
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zoomInIcon->setIcon(QPixmap(":/zoomin.png"));
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zoomInIcon->setIconSize(iconSize);
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QToolButton *zoomOutIcon = new QToolButton;
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zoomOutIcon->setAutoRepeat(true);
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zoomOutIcon->setAutoRepeatInterval(33);
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zoomOutIcon->setAutoRepeatDelay(0);
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zoomOutIcon->setIcon(QPixmap(":/zoomout.png"));
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zoomOutIcon->setIconSize(iconSize);
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zoomSlider = new QSlider;
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zoomSlider->setMinimum(0);
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zoomSlider->setMaximum(500);
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zoomSlider->setValue(250);
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zoomSlider->setTickPosition(QSlider::TicksRight);
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// Zoom slider layout
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QVBoxLayout *zoomSliderLayout = new QVBoxLayout;
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zoomSliderLayout->addWidget(zoomInIcon);
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zoomSliderLayout->addWidget(zoomSlider);
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zoomSliderLayout->addWidget(zoomOutIcon);
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QToolButton *rotateLeftIcon = new QToolButton;
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rotateLeftIcon->setIcon(QPixmap(":/rotateleft.png"));
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rotateLeftIcon->setIconSize(iconSize);
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QToolButton *rotateRightIcon = new QToolButton;
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rotateRightIcon->setIcon(QPixmap(":/rotateright.png"));
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rotateRightIcon->setIconSize(iconSize);
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rotateSlider = new QSlider;
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rotateSlider->setOrientation(Qt::Horizontal);
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rotateSlider->setMinimum(-360);
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rotateSlider->setMaximum(360);
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rotateSlider->setValue(0);
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rotateSlider->setTickPosition(QSlider::TicksBelow);
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// Rotate slider layout
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QHBoxLayout *rotateSliderLayout = new QHBoxLayout;
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rotateSliderLayout->addWidget(rotateLeftIcon);
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rotateSliderLayout->addWidget(rotateSlider);
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rotateSliderLayout->addWidget(rotateRightIcon);
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resetButton = new QToolButton;
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resetButton->setText(tr("0"));
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resetButton->setEnabled(false);
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// Label layout
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QHBoxLayout *labelLayout = new QHBoxLayout;
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label = new QLabel(name);
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label2 = new QLabel(tr("Pointer Mode"));
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selectModeButton = new QToolButton;
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selectModeButton->setText(tr("Select"));
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selectModeButton->setCheckable(true);
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selectModeButton->setChecked(true);
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dragModeButton = new QToolButton;
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dragModeButton->setText(tr("Drag"));
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dragModeButton->setCheckable(true);
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dragModeButton->setChecked(false);
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antialiasButton = new QToolButton;
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antialiasButton->setText(tr("Antialiasing"));
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antialiasButton->setCheckable(true);
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antialiasButton->setChecked(false);
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openGlButton = new QToolButton;
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openGlButton->setText(tr("OpenGL"));
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openGlButton->setCheckable(true);
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#ifndef QT_NO_OPENGL
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openGlButton->setEnabled(QGLFormat::hasOpenGL());
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#else
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openGlButton->setEnabled(false);
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#endif
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printButton = new QToolButton;
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printButton->setIcon(QIcon(QPixmap(":/fileprint.png")));
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QButtonGroup *pointerModeGroup = new QButtonGroup;
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pointerModeGroup->setExclusive(true);
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pointerModeGroup->addButton(selectModeButton);
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pointerModeGroup->addButton(dragModeButton);
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labelLayout->addWidget(label);
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labelLayout->addStretch();
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labelLayout->addWidget(label2);
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labelLayout->addWidget(selectModeButton);
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labelLayout->addWidget(dragModeButton);
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labelLayout->addStretch();
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labelLayout->addWidget(antialiasButton);
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labelLayout->addWidget(openGlButton);
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labelLayout->addWidget(printButton);
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QGridLayout *topLayout = new QGridLayout;
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topLayout->addLayout(labelLayout, 0, 0);
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topLayout->addWidget(graphicsView, 1, 0);
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topLayout->addLayout(zoomSliderLayout, 1, 1);
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topLayout->addLayout(rotateSliderLayout, 2, 0);
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topLayout->addWidget(resetButton, 2, 1);
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setLayout(topLayout);
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connect(resetButton, SIGNAL(clicked()), this, SLOT(resetView()));
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connect(zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setupMatrix()));
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connect(rotateSlider, SIGNAL(valueChanged(int)), this, SLOT(setupMatrix()));
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connect(graphicsView->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(setResetButtonEnabled()));
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connect(graphicsView->horizontalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(setResetButtonEnabled()));
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connect(selectModeButton, SIGNAL(toggled(bool)), this, SLOT(togglePointerMode()));
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connect(dragModeButton, SIGNAL(toggled(bool)), this, SLOT(togglePointerMode()));
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connect(antialiasButton, SIGNAL(toggled(bool)), this, SLOT(toggleAntialiasing()));
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connect(openGlButton, SIGNAL(toggled(bool)), this, SLOT(toggleOpenGL()));
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connect(rotateLeftIcon, SIGNAL(clicked()), this, SLOT(rotateLeft()));
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connect(rotateRightIcon, SIGNAL(clicked()), this, SLOT(rotateRight()));
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connect(zoomInIcon, SIGNAL(clicked()), this, SLOT(zoomIn()));
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connect(zoomOutIcon, SIGNAL(clicked()), this, SLOT(zoomOut()));
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connect(printButton, SIGNAL(clicked()), this, SLOT(print()));
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setupMatrix();
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}
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QGraphicsView *View::view() const
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{
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return static_cast<QGraphicsView *>(graphicsView);
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}
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void View::resetView()
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{
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zoomSlider->setValue(250);
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rotateSlider->setValue(0);
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setupMatrix();
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graphicsView->ensureVisible(QRectF(0, 0, 0, 0));
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resetButton->setEnabled(false);
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}
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void View::setResetButtonEnabled()
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{
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resetButton->setEnabled(true);
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}
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void View::setupMatrix()
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{
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qreal scale = qPow(qreal(2), (zoomSlider->value() - 250) / qreal(50));
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QMatrix matrix;
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matrix.scale(scale, scale);
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matrix.rotate(rotateSlider->value());
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graphicsView->setMatrix(matrix);
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setResetButtonEnabled();
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}
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void View::togglePointerMode()
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{
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graphicsView->setDragMode(selectModeButton->isChecked()
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? QGraphicsView::RubberBandDrag
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: QGraphicsView::ScrollHandDrag);
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graphicsView->setInteractive(selectModeButton->isChecked());
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}
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void View::toggleOpenGL()
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{
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#ifndef QT_NO_OPENGL
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graphicsView->setViewport(openGlButton->isChecked() ? new QGLWidget(QGLFormat(QGL::SampleBuffers)) : new QWidget);
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#endif
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}
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void View::toggleAntialiasing()
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{
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graphicsView->setRenderHint(QPainter::Antialiasing, antialiasButton->isChecked());
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}
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void View::print()
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{
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#ifndef QT_NO_PRINTER
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QPrinter printer;
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QPrintDialog dialog(&printer, this);
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if (dialog.exec() == QDialog::Accepted) {
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QPainter painter(&printer);
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graphicsView->render(&painter);
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}
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#endif
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}
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void View::zoomIn(int level)
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{
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zoomSlider->setValue(zoomSlider->value() + level);
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}
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void View::zoomOut(int level)
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{
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zoomSlider->setValue(zoomSlider->value() - level);
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}
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void View::rotateLeft()
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{
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rotateSlider->setValue(rotateSlider->value() - 10);
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}
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void View::rotateRight()
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{
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rotateSlider->setValue(rotateSlider->value() + 10);
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}
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