mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-23 20:10:48 +08:00
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// Copyright (C) 2022 The Qt Company Ltd.
|
|
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
|
|
|
|
#include "mainwindow.h"
|
|
#include "./ui_mainwindow.h"
|
|
#include <QPushButton>
|
|
#include <QSlider>
|
|
#include <QLabel>
|
|
#include <QGraphicsEllipseItem>
|
|
#include <QRandomGenerator>
|
|
#include <QOpenGLWidget>
|
|
|
|
MainWindow::MainWindow(QWidget *parent)
|
|
: QMainWindow(parent)
|
|
, ui(new Ui::MainWindow)
|
|
{
|
|
ui->setupUi(this);
|
|
|
|
ui->graphicsView->setViewport(new QOpenGLWidget);
|
|
ui->graphicsView->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
|
|
|
|
QRect rect = ui->graphicsView->rect();
|
|
QGraphicsScene *m_scene = new QGraphicsScene(rect);
|
|
ui->graphicsView->setScene(m_scene);
|
|
|
|
QSize initialSize(150, 150);
|
|
m_ellipse = m_scene->addEllipse(
|
|
rect.width() / 2 - initialSize.width() / 2,
|
|
rect.height() / 2 - initialSize.height() / 2,
|
|
initialSize.width(),
|
|
initialSize.height(),
|
|
QPen(Qt::magenta, 5),
|
|
Qt::blue);
|
|
|
|
QPushButton *button = new QPushButton();
|
|
button->setGeometry(QRect(rect.width() / 2 - 75, 100, 150, 50));
|
|
button->setText("Random ellipse color");
|
|
QObject::connect(button, &QPushButton::pressed, [&]() {
|
|
m_ellipse->setBrush(QColor::fromRgb(QRandomGenerator::global()->generate()));
|
|
m_ellipse->setPen(QPen(QColor::fromRgb(QRandomGenerator::global()->generate()), 5));
|
|
});
|
|
m_scene->addWidget(button);
|
|
|
|
m_label = new QLabel();
|
|
m_label->setGeometry(QRect(rect.width() / 2 - 50, rect.height() - 100, 100, 50));
|
|
m_label->setAlignment(Qt::AlignCenter);
|
|
m_scene->addWidget(m_label);
|
|
|
|
QSlider *slider = new QSlider(Qt::Horizontal);
|
|
slider->setGeometry(QRect(rect.width() / 2 - 100, rect.height() - 50, 200, 50));
|
|
slider->setMinimum(10);
|
|
slider->setMaximum(300);
|
|
slider->setValue(initialSize.width());
|
|
QObject::connect(slider, &QAbstractSlider::valueChanged, [this](int value){
|
|
QRectF rect = m_ellipse->rect();
|
|
rect.setWidth(value);
|
|
rect.setHeight(value);
|
|
m_ellipse->setRect(rect);
|
|
m_label->setText("Ellipse size: " + QString::number(value));
|
|
});
|
|
emit slider->valueChanged(initialSize.width());
|
|
m_scene->addWidget(slider);
|
|
|
|
QMenu *screenShotMenu = menuBar()->addMenu("&Screenshot");
|
|
screenShotMenu->addAction("Left buffer", this, [this](){
|
|
ui->graphicsView->saveImage(QOpenGLWidget::LeftBuffer);
|
|
});
|
|
|
|
screenShotMenu->addAction("Right buffer", this, [this](){
|
|
ui->graphicsView->saveImage(QOpenGLWidget::RightBuffer);
|
|
});
|
|
|
|
}
|
|
|
|
MainWindow::~MainWindow()
|
|
{
|
|
delete ui;
|
|
}
|
|
|