diff options
Diffstat (limited to 'examples/widgets/rhi/cuberhiwidget/main.cpp')
| -rw-r--r-- | examples/widgets/rhi/cuberhiwidget/main.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/examples/widgets/rhi/cuberhiwidget/main.cpp b/examples/widgets/rhi/cuberhiwidget/main.cpp new file mode 100644 index 0000000000..95a29feee5 --- /dev/null +++ b/examples/widgets/rhi/cuberhiwidget/main.cpp @@ -0,0 +1,166 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QApplication> +#include <QVBoxLayout> +#include <QHBoxLayout> +#include <QSlider> +#include <QTextEdit> +#include <QPushButton> +#include <QLabel> +#include <QCheckBox> +#include <QFileDialog> +#include <QFontInfo> +#include <QMouseEvent> +#include <QDrag> +#include <QMimeData> +#include "examplewidget.h" + +int main(int argc, char **argv) +{ + QApplication app(argc, argv); + + QVBoxLayout *layout = new QVBoxLayout; + + ExampleRhiWidget *rhiWidget = new ExampleRhiWidget; + QLabel *overlayLabel = new QLabel(rhiWidget); + overlayLabel->setText(QObject::tr("This is a\nsemi-transparent\n overlay widget\n" + "placed on top of\nthe QRhiWidget.")); + overlayLabel->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter); + overlayLabel->setAutoFillBackground(true); + QPalette semiTransparent(QColor(255, 0, 0, 64)); + semiTransparent.setBrush(QPalette::Text, Qt::white); + semiTransparent.setBrush(QPalette::WindowText, Qt::white); + overlayLabel->setPalette(semiTransparent); + QFont f = overlayLabel->font(); + f.setPixelSize(QFontInfo(f).pixelSize() * 2); + f.setWeight(QFont::Bold); + overlayLabel->setFont(f); + overlayLabel->resize(320, 320); + overlayLabel->hide(); + QObject::connect(rhiWidget, &ExampleRhiWidget::resized, rhiWidget, [rhiWidget, overlayLabel] { + const int w = overlayLabel->width(); + const int h = overlayLabel->height(); + overlayLabel->setGeometry(rhiWidget->width() / 2 - w / 2, rhiWidget->height() / 2 - h / 2, w, h); + }); + + QTextEdit *edit = new QTextEdit(QObject::tr("QRhiWidget!<br><br>" + "The cube is textured with QPainter-generated content.<br><br>" + "Regular, non-native widgets on top work just fine.")); + QObject::connect(edit, &QTextEdit::textChanged, edit, [edit, rhiWidget] { + rhiWidget->setCubeTextureText(edit->toPlainText()); + }); + edit->setMaximumHeight(100); + layout->addWidget(edit); + + QSlider *slider = new QSlider(Qt::Horizontal); + slider->setMinimum(0); + slider->setMaximum(360); + QObject::connect(slider, &QSlider::valueChanged, slider, [slider, rhiWidget] { + rhiWidget->setCubeRotation(slider->value()); + }); + + QHBoxLayout *sliderLayout = new QHBoxLayout; + sliderLayout->addWidget(new QLabel(QObject::tr("Cube rotation"))); + sliderLayout->addWidget(slider); + layout->addLayout(sliderLayout); + + QHBoxLayout *btnLayout = new QHBoxLayout; + + QLabel *apiLabel = new QLabel; + btnLayout->addWidget(apiLabel); + QObject::connect(rhiWidget, &ExampleRhiWidget::rhiChanged, rhiWidget, [apiLabel](const QString &apiName) { + apiLabel->setText(QObject::tr("Using QRhi on ") + apiName); + }); + + QPushButton *btnMakeWindow = new QPushButton(QObject::tr("Make top-level window")); + QObject::connect(btnMakeWindow, &QPushButton::clicked, btnMakeWindow, [rhiWidget, btnMakeWindow, layout] { + if (rhiWidget->parentWidget()) { + rhiWidget->setParent(nullptr); + rhiWidget->setAttribute(Qt::WA_DeleteOnClose, true); + rhiWidget->show(); + btnMakeWindow->setText(QObject::tr("Make child widget")); + } else { + rhiWidget->setAttribute(Qt::WA_DeleteOnClose, false); + layout->addWidget(rhiWidget); + btnMakeWindow->setText(QObject::tr("Make top-level window")); + } + }); + btnLayout->addWidget(btnMakeWindow); + + QPushButton *btn = new QPushButton(QObject::tr("Grab to image")); + QObject::connect(btn, &QPushButton::clicked, btn, [rhiWidget] { + QImage image = rhiWidget->grabFramebuffer(); + qDebug() << "Got image" << image; + if (!image.isNull()) { + QFileDialog fd(rhiWidget->parentWidget()); + fd.setAcceptMode(QFileDialog::AcceptSave); + fd.setDefaultSuffix("png"); + fd.selectFile("test.png"); + if (fd.exec() == QDialog::Accepted) + image.save(fd.selectedFiles().first()); + } + }); + btnLayout->addWidget(btn); + + QCheckBox *cbMsaa = new QCheckBox(QObject::tr("Use 4x MSAA")); + QObject::connect(cbMsaa, &QCheckBox::stateChanged, cbMsaa, [cbMsaa, rhiWidget] { + if (cbMsaa->isChecked()) + rhiWidget->setSampleCount(4); + else + rhiWidget->setSampleCount(1); + }); + btnLayout->addWidget(cbMsaa); + + QCheckBox *cbOvberlay = new QCheckBox(QObject::tr("Show overlay widget")); + QObject::connect(cbOvberlay, &QCheckBox::stateChanged, cbOvberlay, [cbOvberlay, overlayLabel] { + if (cbOvberlay->isChecked()) + overlayLabel->setVisible(true); + else + overlayLabel->setVisible(false); + }); + btnLayout->addWidget(cbOvberlay); + + QCheckBox *cbFlip = new QCheckBox(QObject::tr("Flip")); + QObject::connect(cbFlip, &QCheckBox::stateChanged, cbOvberlay, [cbFlip, rhiWidget] { + rhiWidget->setMirrorVertically(cbFlip->isChecked()); + }); + btnLayout->addWidget(cbFlip); + + QCheckBox *cbFixedSize = new QCheckBox(QObject::tr("Use fixed color buffer size")); + btnLayout->addWidget(cbFixedSize); + QSlider *fixedSizeSlider = new QSlider(Qt::Horizontal); + fixedSizeSlider->setMinimum(16); + fixedSizeSlider->setMaximum(512); + btnLayout->addWidget(fixedSizeSlider); + + QObject::connect(cbFixedSize, &QCheckBox::stateChanged, cbFixedSize, [cbFixedSize, fixedSizeSlider, rhiWidget] { + if (cbFixedSize->isChecked()) + rhiWidget->setFixedColorBufferSize(QSize(fixedSizeSlider->value(), fixedSizeSlider->value())); + else + rhiWidget->setFixedColorBufferSize(QSize()); + }); + QObject::connect(fixedSizeSlider, &QSlider::valueChanged, fixedSizeSlider, [fixedSizeSlider, cbFixedSize, rhiWidget] { + if (cbFixedSize->isChecked()) + rhiWidget->setFixedColorBufferSize(QSize(fixedSizeSlider->value(), fixedSizeSlider->value())); + }); + + // Exit when the detached window is closed; there is not much we can do + // with the controls in the main window then. + QObject::connect(rhiWidget, &QObject::destroyed, rhiWidget, [rhiWidget] { + if (!rhiWidget->parentWidget()) + qGuiApp->quit(); + }); + + layout->addLayout(btnLayout); + layout->addWidget(rhiWidget); + + rhiWidget->setCubeTextureText(edit->toPlainText()); + + QWidget w; + w.setLayout(layout); + w.resize(1280, 720); + w.show(); + + return app.exec(); +} |