diff options
Diffstat (limited to 'demos')
| -rw-r--r-- | demos/demos.pro | 4 | ||||
| -rw-r--r-- | demos/glhypnotizer/glhypnotizer.pro | 21 | ||||
| -rw-r--r-- | demos/glhypnotizer/hypnotizer.qrc | 6 | ||||
| -rw-r--r-- | demos/glhypnotizer/main.cpp | 356 | ||||
| -rw-r--r-- | demos/glhypnotizer/qt-logo.png | bin | 0 -> 2493 bytes | |||
| -rw-r--r-- | demos/glhypnotizer/spiral.svg | 100 |
6 files changed, 487 insertions, 0 deletions
diff --git a/demos/demos.pro b/demos/demos.pro index f1d5b00..ed18446 100644 --- a/demos/demos.pro +++ b/demos/demos.pro @@ -44,6 +44,9 @@ wince*: SUBDIRS = \ contains(QT_CONFIG, opengl):!contains(QT_CONFIG, opengles1):!contains(QT_CONFIG, opengles2):{ SUBDIRS += demos_boxes } +contains(QT_CONFIG, opengl):contains(QT_CONFIG, svg){ +SUBDIRS += demos_glhypnotizer +} mac* && !qpa: SUBDIRS += demos_macmainwindow wince*|symbian|embedded|x11: SUBDIRS += demos_embedded @@ -103,6 +106,7 @@ demos_browser.subdir = browser demos_boxes.subdir = boxes demos_sub-attaq.subdir = sub-attaq demos_spectrum.subdir = spectrum +demos_glhypnotizer.subdir = glhypnotizer #CONFIG += ordered !ordered { diff --git a/demos/glhypnotizer/glhypnotizer.pro b/demos/glhypnotizer/glhypnotizer.pro new file mode 100644 index 0000000..a7fdf5e --- /dev/null +++ b/demos/glhypnotizer/glhypnotizer.pro @@ -0,0 +1,21 @@ +TEMPLATE = app +CONFIG -= moc +INCLUDEPATH += . + +# Input +SOURCES += main.cpp +QT += opengl svg +RESOURCES = hypnotizer.qrc + +build_all:!build_pass { + CONFIG -= build_all + CONFIG += release +} + +# install +target.path = $$[QT_INSTALL_DEMOS]/glhypnotizer +sources.files = $$SOURCES $$HEADERS $$RESOURCES *.png *.pro *.svg +sources.path = $$[QT_INSTALL_DEMOS]/glhypnotizer +INSTALLS += target sources + +symbian: include($$QT_SOURCE_TREE/demos/symbianpkgrules.pri) diff --git a/demos/glhypnotizer/hypnotizer.qrc b/demos/glhypnotizer/hypnotizer.qrc new file mode 100644 index 0000000..97ba159 --- /dev/null +++ b/demos/glhypnotizer/hypnotizer.qrc @@ -0,0 +1,6 @@ +<!DOCTYPE RCC><RCC version="1.0"> +<qresource> + <file>qt-logo.png</file> + <file>spiral.svg</file> +</qresource> +</RCC>
\ No newline at end of file diff --git a/demos/glhypnotizer/main.cpp b/demos/glhypnotizer/main.cpp new file mode 100644 index 0000000..cc1482d --- /dev/null +++ b/demos/glhypnotizer/main.cpp @@ -0,0 +1,356 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the demonstration applications 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 <QtOpenGL> +#include <QtSvg> + +#define NUM_SWIRLY_ITEMS 10 + +class GLPainter : public QObject +{ + Q_OBJECT +public: + GLPainter(QGLWidget *widget); + void stop(); + void resizeViewport(const QSize &size); + +public slots: + void start(); + +protected: + void timerEvent(QTimerEvent *event); + void paint(); + void initSwirlyItems(); + void updateSwirlyItems(); + void drawSuggestiveMessages(QPainter *p); + +private: + QMutex mutex; + QGLWidget *glWidget; + int viewportWidth; + int viewportHeight; + bool doRendering; + qreal rotationAngle; + bool swirlClockwise; + QSvgRenderer svgRenderer; + QPixmap logo; + QPainter::PixmapFragment swirlyItems[NUM_SWIRLY_ITEMS]; + int swirlyCounter; + int textCounter; + int messageYPos; + qreal scaleFactor; +}; + + +GLPainter::GLPainter(QGLWidget *widget) + : glWidget(widget) + , doRendering(true) + , rotationAngle(rand() % 360) + , swirlClockwise((rand() % 2) == 1) + , svgRenderer(QLatin1String(":/spiral.svg"), this) + , logo(QLatin1String(":/qt-logo.png")) +{ +} + +void GLPainter::start() +{ + glWidget->makeCurrent(); + startTimer(20); +} + +void GLPainter::stop() +{ + QMutexLocker locker(&mutex); + doRendering = false; +} + +void GLPainter::resizeViewport(const QSize &size) +{ + QMutexLocker locker(&mutex); + viewportWidth = size.width(); + viewportHeight = size.height(); + initSwirlyItems(); + textCounter = 0; + messageYPos = -1; +} + +void GLPainter::timerEvent(QTimerEvent *event) +{ + QMutexLocker locker(&mutex); + if (!doRendering) { + killTimer(event->timerId()); + QThread::currentThread()->quit(); + return; + } + updateSwirlyItems(); + paint(); +} + +void GLPainter::paint() +{ + QPainter p(glWidget); + p.fillRect(QRect(0, 0, viewportWidth, viewportHeight), Qt::white); + p.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform); + p.translate(viewportWidth / 2, viewportHeight / 2); + p.rotate(rotationAngle * (swirlClockwise ? 1 : -1)); + p.scale(svgRenderer.viewBox().width() / 200.0 * 0.65, + svgRenderer.viewBox().height() / 200.0 * 0.65); + p.translate(-viewportWidth / 2, -viewportHeight / 2); + svgRenderer.render(&p); + p.resetTransform(); + p.drawPixmapFragments(swirlyItems, NUM_SWIRLY_ITEMS, logo); + drawSuggestiveMessages(&p); + p.end(); + rotationAngle += 1.2; +} + +void GLPainter::drawSuggestiveMessages(QPainter *p) +{ + const int numSuggestiveMessages = 7; + const char *texts[numSuggestiveMessages] = {" You feel relaxed.. ", + " Let your mind wander.. ", + " Look deep into the swirls.. ", + " Even deeper.. ", + " Qt is good! ", + " Qt is good for you! ", + " You MUST use Qt! "}; + QFont font(p->font()); + font.setPointSizeF(font.pointSizeF() * viewportWidth/200.0); + p->setFont(font); + QFontMetrics fm(font); + int messageNo = textCounter/314; + if (messageNo > 6 || messageNo < 0) { + qFatal("This should not happen: %d - %d", messageNo, textCounter); + } + QLatin1String text(texts[textCounter / 314]); + qreal textWidth = fm.width(text); + int alpha = 255 * qAbs(qSin(textCounter * 0.01)); + if (messageYPos < 0 || (textCounter % 314 == 0)) { + messageYPos = qBound(fm.height(), rand() % viewportHeight, + viewportHeight - fm.height()); + } + p->setPen(QColor(255, 255, 255, alpha)); + p->setBackground(QColor(50, 50, 50, qBound(0, alpha, 50))); + p->setBackgroundMode(Qt::OpaqueMode); + p->drawText((viewportWidth / 2) - (textWidth/ 2), messageYPos, text); + ++textCounter; + if (textCounter >= (314 * numSuggestiveMessages)) + textCounter = 0; +} + +void GLPainter::initSwirlyItems() +{ + swirlyCounter = swirlClockwise ? 0 : 360; + scaleFactor = viewportWidth / 200.0; + QRectF logoRect(0, 0, logo.width(), logo.height()); + + for (int i=0; i<NUM_SWIRLY_ITEMS; ++i) { + if (swirlClockwise) { + swirlyItems[i] = QPainter::PixmapFragment::create(QPointF(0, 0), logoRect, + scaleFactor, + scaleFactor); + } else { + swirlyItems[i] = QPainter::PixmapFragment::create(QPointF(0, 0), logoRect, + scaleFactor * 1 / 360.0, + scaleFactor * 1 / 360.0); + } + } +} + +void GLPainter::updateSwirlyItems() +{ + swirlyCounter += swirlClockwise ? 1 : -1; + + for (int i=0; i<NUM_SWIRLY_ITEMS; ++i) { + int factor; + factor = swirlClockwise ? (swirlyCounter - i * 20) : (swirlyCounter + i * 20); + if (factor > 0 && factor <= 360) { + swirlyItems[i].x = viewportWidth / 2.0 + qSin(factor * 0.05) * (viewportWidth / 2.0) * (100.0 / factor); + swirlyItems[i].y = viewportHeight / 2.0 + qCos(factor * 0.05) * (viewportHeight / 2.0) * (100.0 / factor); + swirlyItems[i].rotation += -swirlyCounter * 0.01; + swirlyItems[i].scaleX += swirlClockwise ? -scaleFactor * 1 / 360.0 : scaleFactor * 1 / 360.0; + if (swirlClockwise) { + if (swirlyItems[i].scaleX < 0) + swirlyItems[i].scaleX = scaleFactor; + } else { + if (swirlyItems[i].scaleX > scaleFactor) + swirlyItems[i].scaleX = scaleFactor * 1 / 360.0; + } + swirlyItems[i].scaleY = swirlyItems[i].scaleX; + } else { + swirlyItems[i].scaleX = swirlyItems[i].scaleY = 0; + } + } + if (swirlClockwise) { + if (swirlyCounter > (360 + NUM_SWIRLY_ITEMS * 20)) + swirlyCounter = 0; + } else { + if (swirlyCounter < -NUM_SWIRLY_ITEMS * 20) + swirlyCounter = 360; + } +} + +class GLWidget : public QGLWidget +{ +public: + GLWidget(QWidget *parent, QGLWidget *shareWidget = 0); + ~GLWidget(); + void startRendering(); + void stopRendering(); + +protected: + void resizeEvent(QResizeEvent *event); + void paintEvent(QPaintEvent *event); + QSize sizeHint() const { return QSize(200, 200); } + +private: + GLPainter glPainter; + QThread glThread; +}; + +GLWidget::GLWidget(QWidget *parent, QGLWidget *share) + : QGLWidget(QGLFormat(QGL::SampleBuffers), parent, share) + , glPainter(this) + , glThread(this) +{ + setAttribute(Qt::WA_PaintOutsidePaintEvent); + setAttribute(Qt::WA_DeleteOnClose); +} + +GLWidget::~GLWidget() +{ + stopRendering(); +} + +void GLWidget::startRendering() +{ + glPainter.moveToThread(&glThread); + connect(&glThread, SIGNAL(started()), &glPainter, SLOT(start())); + glThread.start(); +} + +void GLWidget::stopRendering() +{ + glPainter.stop(); + glThread.wait(); +} + +void GLWidget::resizeEvent(QResizeEvent *event) +{ + glPainter.resizeViewport(event->size()); +} + +void GLWidget::paintEvent(QPaintEvent *) +{ + // Handled by GLPainter. +} + +class MainWindow : public QMainWindow +{ + Q_OBJECT +public: + MainWindow(); + +private slots: + void newThread(); + void killThread(); + +private: + QMdiArea mdiArea; + QGLWidget shareWidget; +}; + +MainWindow::MainWindow() + : QMainWindow(0) + , mdiArea(this) + , shareWidget(this) +{ + setWindowTitle("Qt GL Hypnotizer"); + QMenu *menu = menuBar()->addMenu("&Hypnotizers"); + menu->addAction("&New hypnotizer thread", this, SLOT(newThread()), QKeySequence("Ctrl+N")); + menu->addAction("&End current hypnotizer thread", this, SLOT(killThread()), QKeySequence("Ctrl+K")); + menu->addSeparator(); + menu->addAction("E&xit", qApp, SLOT(quit()), QKeySequence("Ctrl+Q")); + + setCentralWidget(&mdiArea); + shareWidget.resize(1, 1); + newThread(); +} + +void MainWindow::newThread() +{ + static int windowCount = 1; + if (mdiArea.subWindowList().count() > 9) + return; + GLWidget *widget = new GLWidget(&mdiArea, &shareWidget); + mdiArea.addSubWindow(widget); + widget->setWindowTitle("Thread #" + QString::number(windowCount++)); + widget->show(); + widget->startRendering(); +} + +void MainWindow::killThread() +{ + delete mdiArea.activeSubWindow(); +} + +int main(int argc, char *argv[]) +{ + // Make Xlib and GLX thread safe under X11 + QApplication::setAttribute(Qt::AA_X11InitThreads); + QApplication application(argc, argv); + + // Using QPainter to draw into QGLWidgets is only supported with GL 2.0 + if (!((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0) || + (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_ES_Version_2_0))) { + QMessageBox::information(0, "Qt GL Hypnotizer", + "This system does not support OpenGL 2.0 or OpenGL ES 2.0, " + "which is required for this example to work."); + return 0; + } + + MainWindow mainWindow; + mainWindow.show(); + return application.exec(); +} + +#include "main.moc" diff --git a/demos/glhypnotizer/qt-logo.png b/demos/glhypnotizer/qt-logo.png Binary files differnew file mode 100644 index 0000000..eaea344 --- /dev/null +++ b/demos/glhypnotizer/qt-logo.png diff --git a/demos/glhypnotizer/spiral.svg b/demos/glhypnotizer/spiral.svg new file mode 100644 index 0000000..ff1f047 --- /dev/null +++ b/demos/glhypnotizer/spiral.svg @@ -0,0 +1,100 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!-- Created with Inkscape (http://www.inkscape.org/) --> + +<svg + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:cc="http://creativecommons.org/ns#" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:svg="http://www.w3.org/2000/svg" + xmlns="http://www.w3.org/2000/svg" + xmlns:xlink="http://www.w3.org/1999/xlink" + xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" + xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" + width="512" + height="512" + id="svg2" + version="1.1" + inkscape:version="0.47pre4 r22446" + sodipodi:docname="spiral.svg"> + <defs + id="defs4"> + <linearGradient + id="linearGradient5046"> + <stop + style="stop-color:#000000;stop-opacity:0;" + offset="0" + id="stop5048" /> + <stop + style="stop-color:#6c90da;stop-opacity:1;" + offset="1" + id="stop5050" /> + </linearGradient> + <inkscape:perspective + sodipodi:type="inkscape:persp3d" + inkscape:vp_x="0 : 526.18109 : 1" + inkscape:vp_y="0 : 1000 : 0" + inkscape:vp_z="744.09448 : 526.18109 : 1" + inkscape:persp3d-origin="372.04724 : 350.78739 : 1" + id="perspective10" /> + <radialGradient + inkscape:collect="always" + xlink:href="#linearGradient5046" + id="radialGradient5052" + cx="359.38702" + cy="438.07581" + fx="359.38702" + fy="438.07581" + r="304.44159" + gradientTransform="matrix(1,0,0,0.91551877,0,37.009184)" + gradientUnits="userSpaceOnUse" /> + </defs> + <sodipodi:namedview + id="base" + pagecolor="#ffffff" + bordercolor="#666666" + borderopacity="1.0" + inkscape:pageopacity="0.0" + inkscape:pageshadow="2" + inkscape:zoom="0.99232897" + inkscape:cx="267.31099" + inkscape:cy="295.6491" + inkscape:document-units="px" + inkscape:current-layer="layer1" + showgrid="false" + inkscape:window-width="963" + inkscape:window-height="1024" + inkscape:window-x="286" + inkscape:window-y="74" + inkscape:window-maximized="0" /> + <metadata + id="metadata7"> + <rdf:RDF> + <cc:Work + rdf:about=""> + <dc:format>image/svg+xml</dc:format> + <dc:type + rdf:resource="http://purl.org/dc/dcmitype/StillImage" /> + <dc:title></dc:title> + </cc:Work> + </rdf:RDF> + </metadata> + <g + inkscape:label="Layer 1" + inkscape:groupmode="layer" + id="layer1" + transform="translate(0,-540.36218)"> + <path + sodipodi:type="spiral" + style="fill:url(#radialGradient5052);fill-opacity:1;stroke:#000000;stroke-width:20.29999924;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" + id="path2816" + sodipodi:cx="331.42856" + sodipodi:cy="463.79074" + sodipodi:expansion="1" + sodipodi:revolution="3" + sodipodi:radius="337.44537" + sodipodi:argument="-18.046196" + sodipodi:t0="0" + d="m 331.42856,463.79074 c 11.74672,12.17647 -10.61822,21.84178 -20.23809,19.52382 -26.06925,-6.28154 -29.6746,-39.8823 -18.80954,-59.99999 19.43502,-35.98584 68.28562,-39.36493 99.76189,-18.09528 46.19269,31.21408 49.35062,97.07722 17.381,139.5238 -42.61047,56.57461 -126.00702,59.46265 -179.2857,16.66673 -67.04578,-53.85429 -69.64012,-155.00279 -15.95246,-219.0476 65.02296,-77.56686 184.03573,-79.85552 258.80951,-15.23819 88.11831,76.14929 90.09472,213.09185 14.52392,298.57141 C 400.3696,724.38498 245.45564,726.04525 149.28577,639.50509 40.011453,541.17265 38.669765,368.25918 136.1904,261.40987 245.59381,141.54108 436.52669,140.5196 554.04752,249.02876 684.51792,369.4945 685.21808,578.4614 565.71435,706.64779" + transform="matrix(0.9291373,0,0,0.91940263,-79.040559,394.33975)" /> + </g> +</svg> |
