projects/infoscreen/pictureview.cpp

#include "pictureview.h"

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

PictureView::PictureView(QWidget* parent)
        : QWidget(parent)
{
    http.connect(&http, SIGNAL(requestFinished(int,bool)),this, SLOT(onLoad(int,bool)) );
}

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 url(requestedUrl);
        http.setHost(url.host() );
        http.get(url.path(), 0);
    }
}

void PictureView::onLoad(int id, bool ok)
{
    Q_UNUSED(id);
    Q_UNUSED(ok);
    qint64 byteCount = http.bytesAvailable();

    if (byteCount > 0) {

        QByteArray data = http.readAll();   

        QPixmap pixmap;
        pixmap.loadFromData( data );

        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	torben	526	http.connect(&http, SIGNAL(requestFinished(int,bool)),this, SLOT(onLoad(int,bool)) );
13	torben	524	}
14
15			void PictureView::paintEvent ( QPaintEvent* event)
16			{
17	torben	525	Q_UNUSED(event);
18	torben	524	QPainter painter(this);
19			painter.drawPixmap(0,0,image);
20			painter.end();
21			}
22
23			void PictureView::loadFromUrl(QString source)
24			{
25			QMap<QString, QPixmap>::iterator it = map.find(source);
26			if (it != map.end() ) {
27			image = it.value();
28			this->repaint();
29			} else {
30			requestedUrl = source;
31
32	torben	526	QUrl url(requestedUrl);
33			http.setHost(url.host() );
34			http.get(url.path(), 0);
35	torben	524	}
36			}
37
38			void PictureView::onLoad(int id, bool ok)
39			{
40	torben	525	Q_UNUSED(id);
41			Q_UNUSED(ok);
42	torben	526	qint64 byteCount = http.bytesAvailable();
43	torben	524
44	torben	526	if (byteCount > 0) {
45	torben	524
46	torben	526	QByteArray data = http.readAll();
47	torben	524
48	torben	526	QPixmap pixmap;
49			pixmap.loadFromData( data );
50	torben	524
51	torben	526	QPixmap scaledImage = pixmap.scaledToHeight(size().height(), Qt::SmoothTransformation );
52	torben	524
53	torben	526	image = scaledImage;
54			this->repaint();
55	torben	524
56	torben	526	map.insert(requestedUrl, scaledImage);
57			}
58	torben	524	}