projects/infoscreen/pictureview.cpp

#include "pictureview.h"

#include <QGraphicsView>
#include <QGraphicsScene>
#include <QDebug>
#include <QUrl>
#include <QHttp>

PictureView::PictureView(QWidget* parent)
        : QWidget(parent)
{
}

void PictureView::paintEvent ( QPaintEvent* event)
{    
 //   Q_UNUSED(event);
    QPainter painter(this);
    painter.drawPixmap(0,0,image);
    painter.end();
}

void PictureView::loadFromUrl(QString source)
{
    QMap<QString, QPixmap>::iterator it = map.find(source);
    if (it != map.end() ) {
        image = it.value();
        this->repaint();
    } else {
        requestedUrl = source;

        QUrl imageUrl(requestedUrl);
        http = new QHttp(imageUrl.host() );
        http->connect(http, SIGNAL(requestFinished(int,bool)),this, SLOT(onLoad(int,bool)) );

        http->get(imageUrl.path(), 0);
    }
}

void PictureView::onLoad(int id, bool ok)
{
//    Q_UNUSED(id);
//    Q_UNUSED(ok);

    QByteArray data = http->readAll();

    QPixmap pixmap;
    pixmap.loadFromData( data );
    delete http;

    QPixmap scaledImage = pixmap.scaledToHeight(size().height(), Qt::SmoothTransformation );

    image = scaledImage;
    this->repaint();

    map.insert(requestedUrl, scaledImage);

}
1	torben	524	#include "pictureview.h"
2
3			#include <QGraphicsView>
4			#include <QGraphicsScene>
5			#include <QDebug>
6			#include <QUrl>
7			#include <QHttp>
8
9			PictureView::PictureView(QWidget* parent)
10			: QWidget(parent)
11			{
12			}
13
14			void PictureView::paintEvent ( QPaintEvent* event)
15			{
16			// Q_UNUSED(event);
17			QPainter painter(this);
18			painter.drawPixmap(0,0,image);
19			painter.end();
20			}
21
22			void PictureView::loadFromUrl(QString source)
23			{
24			QMap<QString, QPixmap>::iterator it = map.find(source);
25			if (it != map.end() ) {
26			image = it.value();
27			this->repaint();
28			} else {
29			requestedUrl = source;
30
31			QUrl imageUrl(requestedUrl);
32			http = new QHttp(imageUrl.host() );
33			http->connect(http, SIGNAL(requestFinished(int,bool)),this, SLOT(onLoad(int,bool)) );
34
35			http->get(imageUrl.path(), 0);
36			}
37			}
38
39			void PictureView::onLoad(int id, bool ok)
40			{
41			// Q_UNUSED(id);
42			// Q_UNUSED(ok);
43
44			QByteArray data = http->readAll();
45
46			QPixmap pixmap;
47			pixmap.loadFromData( data );
48			delete http;
49
50			QPixmap scaledImage = pixmap.scaledToHeight(size().height(), Qt::SmoothTransformation );
51
52			image = scaledImage;
53			this->repaint();
54
55			map.insert(requestedUrl, scaledImage);
56
57			}