QCamera 简单使用

#include "widget.h" #include <QLayout> #include <QLabel> #include <QPushButton> #include <QFileDialog> #include <QCamera> #include <QCameraViewfinder> #include <QCameraImageCapture> Widget::Widget(QWidget *parent) : QWidget(parent) { setWindowTitle("QCamera"); m_pCamera = new QCamera(this); m_pViewfinder = new QCameraViewfinder(this); m_pImageCapture = new QCameraImageCapture(m_pCamera); QPushButton* button1 = new QPushButton("Capture"); QPushButton* button2 = new QPushButton("Exit"); QVBoxLayout *mainLayout = new QVBoxLayout(this); mainLayout->addWidget(m_pViewfinder); mainLayout->addWidget(button1); mainLayout->addWidget(button2); connect(button1, SIGNAL(clicked()), m_pImageCapture, SLOT(capture())); connect(button2, SIGNAL(clicked()), this, SLOT(exitBtnResponded())); connect(m_pImageCapture, SIGNAL(imageCaptured(int,QImage)), this, SLOT(cameraImageCaptured(int,QImage))); m_pImageCapture->setCaptureDestination(QCameraImageCapture::CaptureToFile); m_pCamera->setCaptureMode(QCamera::CaptureStillImage); m_pCamera->setViewfinder(m_pViewfinder); m_pCamera->start(); } Widget::~Widget() { delete m_pCamera; delete m_pViewfinder; delete m_pImageCapture; } void Widget::exitBtnResponded() { m_pCamera->stop(); close(); } void Widget::cameraImageCaptured(int, QImage image) { QString savepath = QFileDialog::getSaveFileName(this,"Save Capture","Capture","Image png(*.png);;Image jpg(*.jpg);;Image bmp(*.bmp)"); if(!savepath.isEmpty()){ image.save(savepath); } }