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Diffstat (limited to 'examples/opengl/paintedwindow/paintedwindow.cpp')
| -rw-r--r-- | examples/opengl/paintedwindow/paintedwindow.cpp | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/examples/opengl/paintedwindow/paintedwindow.cpp b/examples/opengl/paintedwindow/paintedwindow.cpp deleted file mode 100644 index 94aa215288..0000000000 --- a/examples/opengl/paintedwindow/paintedwindow.cpp +++ /dev/null @@ -1,232 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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 The Qt Company Ltd 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 "paintedwindow.h" - -#include <QGuiApplication> -#include <QOpenGLContext> -#include <QOpenGLPaintDevice> -#include <QPainter> -#include <QPainterPath> -#include <QScreen> -#include <QTimer> - -#include <qmath.h> - -PaintedWindow::PaintedWindow() -{ - QSurfaceFormat format; - format.setStencilBufferSize(8); - format.setSamples(4); - - setSurfaceType(QWindow::OpenGLSurface); - setFlags(Qt::Window | Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint); - setFormat(format); - - create(); - - m_context = new QOpenGLContext(this); - m_context->setFormat(format); - m_context->create(); - - m_animation = new QPropertyAnimation(this, "rotation"); - m_animation->setStartValue(qreal(0)); - m_animation->setEndValue(qreal(1)); - m_animation->setDuration(500); - - QRect screenGeometry = screen()->availableGeometry(); - - QPoint center = screenGeometry.center(); - QRect windowRect = screen()->isLandscape(screen()->orientation()) ? QRect(0, 0, 640, 480) : QRect(0, 0, 480, 640); - setGeometry(QRect(center - windowRect.center(), windowRect.size())); - - m_rotation = 0; - - reportContentOrientationChange(screen()->orientation()); - - m_targetOrientation = contentOrientation(); - m_nextTargetOrientation = Qt::PrimaryOrientation; - - connect(screen(), &QScreen::orientationChanged, this, &PaintedWindow::orientationChanged); - connect(m_animation, &QAbstractAnimation::finished, this, &PaintedWindow::rotationDone); - connect(this, &PaintedWindow::rotationChanged, this, QOverload<>::of(&PaintedWindow::paint)); -} - -void PaintedWindow::exposeEvent(QExposeEvent *) -{ - if (isExposed()) - paint(); -} - -void PaintedWindow::mousePressEvent(QMouseEvent *) -{ - Qt::ScreenOrientation o = contentOrientation(); - switch (o) { - case Qt::LandscapeOrientation: - orientationChanged(Qt::PortraitOrientation); - break; - case Qt::PortraitOrientation: - orientationChanged(Qt::InvertedLandscapeOrientation); - break; - case Qt::InvertedLandscapeOrientation: - orientationChanged(Qt::InvertedPortraitOrientation); - break; - case Qt::InvertedPortraitOrientation: - orientationChanged(Qt::LandscapeOrientation); - break; - default: - Q_ASSERT(false); - } - - paint(); -} - -void PaintedWindow::orientationChanged(Qt::ScreenOrientation newOrientation) -{ - if (contentOrientation() == newOrientation) - return; - - if (m_animation->state() == QAbstractAnimation::Running) { - m_nextTargetOrientation = newOrientation; - return; - } - - QRect rect(0, 0, width(), height()); - - m_prevImage = QImage(width(), height(), QImage::Format_ARGB32_Premultiplied); - m_nextImage = QImage(width(), height(), QImage::Format_ARGB32_Premultiplied); - m_prevImage.fill(0); - m_nextImage.fill(0); - - QPainter p; - p.begin(&m_prevImage); - p.setTransform(screen()->transformBetween(contentOrientation(), screen()->orientation(), rect)); - paint(&p, screen()->mapBetween(contentOrientation(), screen()->orientation(), rect)); - p.end(); - - p.begin(&m_nextImage); - p.setTransform(screen()->transformBetween(newOrientation, screen()->orientation(), rect)); - paint(&p, screen()->mapBetween(newOrientation, screen()->orientation(), rect)); - p.end(); - - m_deltaRotation = screen()->angleBetween(newOrientation, contentOrientation()); - if (m_deltaRotation > 180) - m_deltaRotation = 180 - m_deltaRotation; - - m_targetOrientation = newOrientation; - m_animation->start(); -} - -void PaintedWindow::rotationDone() -{ - reportContentOrientationChange(m_targetOrientation); - if (m_nextTargetOrientation != Qt::PrimaryOrientation) { - Q_ASSERT(m_animation->state() != QAbstractAnimation::Running); - orientationChanged(m_nextTargetOrientation); - m_nextTargetOrientation = Qt::PrimaryOrientation; - } -} - -void PaintedWindow::setRotation(qreal r) -{ - if (r != m_rotation) { - m_rotation = r; - emit rotationChanged(r); - } -} - -void PaintedWindow::paint() -{ - m_context->makeCurrent(this); - - QRect rect(0, 0, width() * devicePixelRatio(), height() * devicePixelRatio()); - - QOpenGLPaintDevice device(size() * devicePixelRatio()); - QPainter painter(&device); - - QPainterPath path; - path.addEllipse(rect); - painter.setCompositionMode(QPainter::CompositionMode_Source); - painter.fillRect(rect, Qt::transparent); - painter.setCompositionMode(QPainter::CompositionMode_SourceOver); - painter.fillPath(path, Qt::blue); - - if (contentOrientation() != m_targetOrientation) { - painter.setRenderHint(QPainter::SmoothPixmapTransform); - painter.save(); - painter.translate(width() / 2, height() / 2); - painter.rotate(m_deltaRotation * m_rotation); - painter.translate(-width() / 2, -height() / 2); - painter.drawImage(0, 0, m_prevImage); - painter.restore(); - painter.translate(width() / 2, height() / 2); - painter.rotate(m_deltaRotation * m_rotation - m_deltaRotation); - painter.translate(-width() / 2, -height() / 2); - painter.setOpacity(m_rotation); - painter.drawImage(0, 0, m_nextImage); - } else { - QRect mapped = screen()->mapBetween(contentOrientation(), screen()->orientation(), rect); - - painter.setTransform(screen()->transformBetween(contentOrientation(), screen()->orientation(), rect)); - paint(&painter, mapped); - painter.end(); - } - - m_context->swapBuffers(this); -} - -void PaintedWindow::paint(QPainter *painter, const QRect &rect) -{ - painter->setRenderHint(QPainter::Antialiasing); - QFont font; - font.setPixelSize(64); - painter->setFont(font); - painter->drawText(rect, Qt::AlignCenter, "Hello"); -} |