/**************************************************************************** ** ** Copyright (C) 2010 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. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ** the names of its contributors may be used to endorse or promote ** products derived from this software without specific prior written ** permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #include "glwidget.h" #include "mainwindow.h" MainWindow::MainWindow() { centralWidget = new QWidget; setCentralWidget(centralWidget); glWidget = new GLWidget; pixmapLabel = new QLabel; glWidgetArea = new QScrollArea; glWidgetArea->setWidget(glWidget); glWidgetArea->setWidgetResizable(true); glWidgetArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); glWidgetArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); glWidgetArea->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored); glWidgetArea->setMinimumSize(50, 50); pixmapLabelArea = new QScrollArea; pixmapLabelArea->setWidget(pixmapLabel); pixmapLabelArea->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored); pixmapLabelArea->setMinimumSize(50, 50); xSlider = createSlider(SIGNAL(xRotationChanged(int)), SLOT(setXRotation(int))); ySlider = createSlider(SIGNAL(yRotationChanged(int)), SLOT(setYRotation(int))); zSlider = createSlider(SIGNAL(zRotationChanged(int)), SLOT(setZRotation(int))); createActions(); createMenus(); QGridLayout *centralLayout = new QGridLayout; centralLayout->addWidget(glWidgetArea, 0, 0); centralLayout->addWidget(pixmapLabelArea, 0, 1); centralLayout->addWidget(xSlider, 1, 0, 1, 2); centralLayout->addWidget(ySlider, 2, 0, 1, 2); centralLayout->addWidget(zSlider, 3, 0, 1, 2); centralWidget->setLayout(centralLayout); xSlider->setValue(15 * 16); ySlider->setValue(345 * 16); zSlider->setValue(0 * 16); setWindowTitle(tr("Grabber")); resize(400, 300); } void MainWindow::renderIntoPixmap() { QSize size = getSize(); if (size.isValid()) { QPixmap pixmap = glWidget->renderPixmap(size.width(), size.height()); setPixmap(pixmap); } } void MainWindow::grabFrameBuffer() { QImage image = glWidget->grabFrameBuffer(); setPixmap(QPixmap::fromImage(image)); } void MainWindow::clearPixmap() { setPixmap(QPixmap()); } void MainWindow::about() { QMessageBox::about(this, tr("About Grabber"), tr("The Grabber example demonstrates two approaches for " "rendering OpenGL into a Qt pixmap.")); } void MainWindow::createActions() { renderIntoPixmapAct = new QAction(tr("&Render into Pixmap..."), this); renderIntoPixmapAct->setShortcut(tr("Ctrl+R")); connect(renderIntoPixmapAct, SIGNAL(triggered()), this, SLOT(renderIntoPixmap())); grabFrameBufferAct = new QAction(tr("&Grab Frame Buffer"), this); grabFrameBufferAct->setShortcut(tr("Ctrl+G")); connect(grabFrameBufferAct, SIGNAL(triggered()), this, SLOT(grabFrameBuffer())); clearPixmapAct = new QAction(tr("&Clear Pixmap"), this); clearPixmapAct->setShortcut(tr("Ctrl+L")); connect(clearPixmapAct, SIGNAL(triggered()), this, SLOT(clearPixmap())); exitAct = new QAction(tr("E&xit"), this); exitAct->setShortcuts(QKeySequence::Quit); connect(exitAct, SIGNAL(triggered()), this, SLOT(close())); aboutAct = new QAction(tr("&About"), this); connect(aboutAct, SIGNAL(triggered()), this, SLOT(about())); aboutQtAct = new QAction(tr("About &Qt"), this); connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt())); } void MainWindow::createMenus() { fileMenu = menuBar()->addMenu(tr("&File")); fileMenu->addAction(renderIntoPixmapAct); fileMenu->addAction(grabFrameBufferAct); fileMenu->addAction(clearPixmapAct); fileMenu->addSeparator(); fileMenu->addAction(exitAct); helpMenu = menuBar()->addMenu(tr("&Help")); helpMenu->addAction(aboutAct); helpMenu->addAction(aboutQtAct); } QSlider *MainWindow::createSlider(const char *changedSignal, const char *setterSlot) { QSlider *slider = new QSlider(Qt::Horizontal); slider->setRange(0, 360 * 16); slider->setSingleStep(16); slider->setPageStep(15 * 16); slider->setTickInterval(15 * 16); slider->setTickPosition(QSlider::TicksRight); connect(slider, SIGNAL(valueChanged(int)), glWidget, setterSlot); connect(glWidget, changedSignal, slider, SLOT(setValue(int))); return slider; } void MainWindow::setPixmap(const QPixmap &pixmap) { pixmapLabel->setPixmap(pixmap); QSize size = pixmap.size(); if (size - QSize(1, 0) == pixmapLabelArea->maximumViewportSize()) size -= QSize(1, 0); pixmapLabel->resize(size); } QSize MainWindow::getSize() { bool ok; QString text = QInputDialog::getText(this, tr("Grabber"), tr("Enter pixmap size:"), QLineEdit::Normal, tr("%1 x %2").arg(glWidget->width()) .arg(glWidget->height()), &ok); if (!ok) return QSize(); QRegExp regExp(tr("([0-9]+) *x *([0-9]+)")); if (regExp.exactMatch(text)) { int width = regExp.cap(1).toInt(); int height = regExp.cap(2).toInt(); if (width > 0 && width < 2048 && height > 0 && height < 2048) return QSize(width, height); } return glWidget->size(); }