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Qt显示网络图片【来自OSCHINA-海之朝露】

2014-02-26 09:22

项目要用到记录一下

1. [文件] CImage.cpp ~ 1KB 下载(45) 跳至 [1] [2] [3] [全屏预览]

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01	#include <QtGui/QtGui>

02

03	#include "CImage.h"

04

05	CImage::CImage(QWidget *parent):QDialog(parent)

06

{

07	ImageLabel=new QLabel(tr("加载中."));

08

09	QVBoxLayout *vboxLayout = new QVBoxLayout;

10	vboxLayout->addWidget(ImageLabel);

11	setLayout(vboxLayout);

12

13	setWindowTitle(tr("加载网络图片测试"));

14	resize(300, 200);

15

16	currentPicture = new QPixmap;

17

18

//获取网络图片

19	QNetworkAccessManager *manager;

20	manager = new QNetworkAccessManager(this);

21

22	connect(manager, SIGNAL(finished(QNetworkReply*)),

23	this, SLOT(replyFinished(QNetworkReply*)));

24	manager->get(QNetworkRequest(QUrl("http://www.oschina.net/img/logo_s2.png")));

25

}

26

27

28	void CImage::replyFinished(QNetworkReply *reply)

29

{

30	if(reply->error() == QNetworkReply::NoError)

31

{

32	//获取字节流构造 QPixmap 对象

33	currentPicture->loadFromData(reply->readAll());

34	QDateTime now;

35	QString filename = now.currentDateTime().toString("yyMMddhhmmss.jpg");

36	currentPicture->save(filename);//保存图片

37	//qDebug()<<"picture saved as "<<filename;

38	currentFileName = filename;

39

40	//可以在onpaint中用QPixmap 显示currentPicture，则这种方法则不需要保存

41

42

//显示图片，

43	QMovie *move = new QMovie(currentFileName);

44	ImageLabel->setMovie(move);

45	move->start();

46

}

47

}

2. [文件] CImage.h ~ 600B 下载(29)

01	#ifndef CIMAGE_H

02	#define CIMAGE_H

03	#include <QtGui/QDialog>

04	#include <QLabel>

05	#include <QMovie>

06	#include <QNetworkAccessManager>

07	#include <QUrl>

08	#include <QNetworkRequest>

09	#include <QNetworkReply>

10	#include <QPixmap>

11

12	class QLabel;

13	class QLineEdit;

14	class QPushButton;

15

16	class CImage:public QDialog

17

{

18

Q_OBJECT

19

public:

20	CImage(QWidget *parent=0);

21	virtual ~CImage() {}

22

private:

23	QLabel *ImageLabel;

24	QPushButton *ImageButton;

25	QPixmap *currentPicture;

26	QString currentFileName;

27	public slots:

28	void replyFinished(QNetworkReply *reply);

29

};

30

31	#endif // CIMAGE_H

3. [文件] main.cpp ~ 223B 下载(35)

01	#include<QtGui/QtGui>

02	#include"CImage.h"

03

04	int main(int argc,char*argv[])

05

{

06	QApplication app(argc,argv);

07	QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));

08	CImage dlg;

09	return dlg.exec();

10

}

4. [文件] CImage.zip ~ 22KB 下载(136)

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