QuasarApp/qt-solutions
4
0
Fork 0
mirror of https://github.com/QuasarApp/qt-solutions.git synced 2025-05-19 16:29:33 +00:00
Code Issues Projects Releases Wiki Activity
qt-solutions/qtbrowserplugin/doc/html/qtbrowserplugin-example-grapher.html
Sergio Ahumada 67a72e3bc2 Update copyright year in Digia's license headers 
Change-Id: I4520cf54a4c8d6ff6119dc3762d9aeac42b66af5
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
2013-01-10 23:18:32 +01:00

460 lines
14 KiB
HTML
Raw Blame History

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<!-- grapher.qdoc -->
<head>
<title>Grapher Plugin</title>
<link href="classic.css" rel="stylesheet" type="text/css" />
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="left" valign="top" width="32"><img src="images/qt-logo.png" align="left" width="57" height="67" border="0" /></td>
<td width="1">&nbsp;&nbsp;</td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a></td>
</tr></table><h1 class="title">Grapher Plugin<br /><span class="subtitle"></span>
</h1>
<object type="application/x-graphable" data="http://qt.nokia.com/doc/3.3/graph.g1n" WIDTH=250 HEIGHT=250></object>
<p>Implementation:</p>
<pre><span class="comment"> /****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** &quot;Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
**
****************************************************************************/</span>
#include &lt;QtGui&gt;
#include &lt;qtbrowserplugin.h&gt;
#ifdef QAXSERVER
#include &lt;ActiveQt/QAxBindable&gt;
#include &lt;ActiveQt/QAxFactory&gt;
#include &lt;qt_windows.h&gt;
#endif
class Graph : public QWidget, public QtNPBindable
#ifdef QAXSERVER
, public QAxBindable
#endif
{
Q_OBJECT
Q_ENUMS(GraphStyle)
Q_PROPERTY(GraphStyle graphStyle READ graphStyle WRITE setGraphStyle)
Q_PROPERTY(QString src READ dataSourceUrl WRITE setDataSourceUrl)
Q_CLASSINFO(&quot;ClassID&quot;, &quot;{2e5b2715-46b2-4831-ba9b-6a3b195d5ec8}&quot;)
Q_CLASSINFO(&quot;InterfaceID&quot;, &quot;{94581136-3c0c-46cc-97a1-066061356d43}&quot;)
Q_CLASSINFO(&quot;EventsID&quot;, &quot;{8c191b77-1894-45c7-9d6b-201dede95410}&quot;)
Q_CLASSINFO(&quot;MIME&quot;, &quot;application/x-graphable:g1n:Graphable ASCII numeric data&quot;)
public:
Graph(QWidget *parent = 0);
~Graph();
enum GraphStyle
{
Pie,
Bar
};
void setGraphStyle(GraphStyle style);
GraphStyle graphStyle() const;
void setDataSourceUrl(const QString &amp;url);
QString dataSourceUrl() const;
bool readData(QIODevice *source, const QString &amp;format);
bool writeData(QIODevice *sink);
void transferComplete(const QString &amp;url, int id, Reason r);
protected:
void timerEvent(QTimerEvent*);
void enterEvent(QEvent *);
void leaveEvent(QEvent *);
void paintEvent(QPaintEvent*);
void mousePressEvent(QMouseEvent *me);
void paintWait();
void paintBar(QPaintEvent*);
void paintPie(QPaintEvent*);
private slots:
void stylePie();
void styleBar();
void aboutPlugin();
void aboutData();
void aboutQt();
void aboutQtDevelopmentFrameworks();
private:
struct Datum {
double value;
QString label;
};
QList&lt;Datum&gt; data;
void processData(QTextStream &amp;in);
QMenu *menu;
QStatusBar *statusbar;
QAction *pie, *bar;
int pieRotation;
int pieTimer;
GraphStyle m_style;
<span class="comment">// Developer information for the About Data dialog:</span>
QString sourceUrl;
int lastReqId, lastConfId;
QString lastConfUrl;
Reason lastConfReason;
};
Graph::Graph(QWidget *parent)
: QWidget(parent), pieRotation(0), pieTimer(0)
{
menu = new QMenu(this);
QMenu *styles = menu-&gt;addMenu(&quot;&amp;Styles&quot;);
pie = styles-&gt;addAction(&quot;&amp;Pie&quot;,this,SLOT(stylePie()));
pie-&gt;setShortcut(QString(&quot;Ctrl+P&quot;));
pie-&gt;setCheckable(true);
bar = styles-&gt;addAction(&quot;&amp;Bar&quot;, this, SLOT(styleBar()));
bar-&gt;setShortcut(QString(&quot;Ctrl+B&quot;));
bar-&gt;setCheckable(true);
QActionGroup *group = new QActionGroup(this);
group-&gt;setExclusive(true);
group-&gt;addAction(pie);
group-&gt;addAction(bar);
QMenu* help = menu-&gt;addMenu(&quot;&amp;Help&quot;);
help-&gt;addAction(&quot;About &amp;plugin...&quot;, this, SLOT(aboutPlugin()))-&gt;setShortcut(QString(&quot;Ctrl+A&quot;));
help-&gt;addAction(&quot;About &amp;data...&quot;, this, SLOT(aboutData()));
help-&gt;addAction(&quot;About &amp;Qt...&quot;, this, SLOT(aboutQt()));
help-&gt;addAction(&quot;About Qt &amp;Development Frameworks...&quot;, this, SLOT(aboutQtDevelopmentFrameworks()));
QShortcut *shortcut = new QShortcut(QKeySequence(&quot;Ctrl+F5&quot;), this);
connect(shortcut, SIGNAL(activated()), this, SLOT(aboutQt()));
statusbar = new QStatusBar(this);
setFocusPolicy(Qt::StrongFocus);
setGraphStyle(Pie);
QPalette pal = palette();
pal.setColor(QPalette::Window,Qt::white);
setPalette(pal);
lastReqId = 0;
lastConfId = 0;
lastConfReason = ReasonUnknown;
}
Graph::~Graph()
{
}
void Graph::setGraphStyle(GraphStyle style)
{
if (pieTimer)
killTimer(pieTimer);
m_style = style;
switch(m_style) {
case Pie:
pieTimer = startTimer(50);
pie-&gt;setChecked(true);
break;
case Bar:
bar-&gt;setChecked(true);
break;
}
repaint();
}
Graph::GraphStyle Graph::graphStyle() const
{
return m_style;
}
void Graph::setDataSourceUrl(const QString &amp;url)
{
sourceUrl = url;
#ifdef QAXSERVER
<span class="comment">// IE does not call our readData() if plugin is fullpage, so do it here</span>
if (QAxFactory::isServer() &amp;&amp; clientSite()) {
TCHAR cFileName[512];
if (URLDownloadToCacheFile(0, url.utf16(), cFileName, 512, 0, 0) == S_OK)
readData(&amp;QFile(QString::fromUtf16(cFileName)), QString());
}
#endif
}
QString Graph::dataSourceUrl() const
{
return sourceUrl;
}
void Graph::aboutPlugin()
{
openUrl(&quot;http:<span class="comment">//qt.nokia.com/products/appdev/add-on-products/catalog/4/Utilities/qtbrowserplugin/&quot;);</span>
}
void Graph::aboutData()
{
QString page = parameters().value(&quot;datapage&quot;).toString();
if (!page.isEmpty()) {
openUrl(page);
} else {
QByteArray table;
table += &quot;&lt;b&gt;Data loaded from &quot; + sourceUrl.toLatin1() + &quot;&lt;/b&gt;\n&quot;;
table += &quot;&lt;p&gt;This data has been loaded with streammode = '&quot;;
table += parameters().contains(&quot;streammode&quot;) ? parameters().value(&quot;streammode&quot;).toByteArray() : QByteArray(&quot;Default&quot;);
table += &quot;'&lt;/p&gt;\n&quot;;
table += &quot;&lt;table&gt;\n&quot;;
for (int i = 0; i &lt; data.count(); ++i) {
Datum datum = data.at(i);
table += &quot;&lt;tr&gt;&lt;td&gt;&quot; + datum.label + &quot;&lt;/td&gt;&lt;td&gt;&quot; + QString::number(datum.value) + &quot;&lt;/td&gt;&lt;/tr&gt;\n&quot;;
}
table += &quot;&lt;/table&gt;\n&quot;;
table += &quot;&lt;p&gt;&lt;b&gt;OpenURL() API usage information:&lt;/b&gt;\n&quot;;
table += &quot;&lt;br&gt;Last OpenURL() request id: &quot; + QString::number(lastReqId);
table += &quot;&lt;br&gt;Last confirmation id: &quot; + QString::number(lastConfId);
table += &quot; Reason: &quot; + QString::number((int)lastConfReason);
table += &quot;&lt;br&gt;URL: &quot; + lastConfUrl;
table += &quot;&lt;/p&gt;\n&quot;;
QMessageBox::information(this, &quot;Data information&quot;, QLatin1String(table));
}
}
void Graph::transferComplete(const QString &amp;url, int id, Reason r)
{
lastConfId = id;
lastConfUrl = url;
lastConfReason = r;
}
void Graph::aboutQt()
{
QMessageBox::aboutQt(this);
}
void Graph::aboutQtDevelopmentFrameworks()
{
lastReqId = openUrl(&quot;http:<span class="comment">//qt.nokia.com&quot;);</span>
}
void Graph::stylePie()
{
setGraphStyle(Pie);
}
void Graph::styleBar()
{
setGraphStyle(Bar);
}
bool Graph::readData(QIODevice *source, const QString &amp;<span class="comment">/*format*/</span>)
{
if (!source-&gt;open(QIODevice::ReadOnly|QIODevice::Text))
return false;
data.clear();
QTextStream in(source);
processData(in);
update();
return true;
}
void Graph::processData(QTextStream &amp;in)
{
while (!in.atEnd()) {
Datum datum;
QString value;
in &gt;&gt; value;
in &gt;&gt; datum.label;
bool ok;
datum.value = value.toDouble(&amp;ok);
if (ok)
data += datum;
}
}
bool Graph::writeData(QIODevice *target)
{
if (!target-&gt;open(QIODevice::WriteOnly|QIODevice::Text))
return false;
QTextStream out(target);
foreach(Datum datum, data) {
out &lt;&lt; datum.value &lt;&lt; &quot;\t&quot; &lt;&lt; datum.label &lt;&lt; endl;
}
return true;
}
void Graph::timerEvent(QTimerEvent *e)
{
if (e-&gt;timerId() == pieTimer) {
pieRotation = (pieRotation + 1) % 360;
update();
}
QWidget::timerEvent(e);
}
void Graph::enterEvent(QEvent *)
{
statusbar-&gt;showMessage(QString(&quot;Qt Grapher plugin [%1]&quot;).arg(mimeType()));
}
void Graph::leaveEvent(QEvent *)
{
if (!QApplication::activePopupWidget()) {
statusbar-&gt;clearMessage();
}
}
void Graph::paintEvent(QPaintEvent* event)
{
if (!data.count()) {
paintWait();
} else {
switch (m_style) {
case Pie:
paintPie(event);
break;
default:
paintBar(event);
break;
}
}
}
void Graph::mousePressEvent(QMouseEvent *me)
{
menu-&gt;exec(me-&gt;globalPos());
}
void Graph::paintWait()
{
QPainter p(this);
p.drawText(rect(), Qt::AlignCenter, &quot;Loading...&quot;);
}
void Graph::paintBar(QPaintEvent* event)
{
const int count = data.count();
double max = 0.0;
for (int i = 0; i &lt; count; ++i) {
double value = data.at(i).value;
if (value &gt; max)
max = value;
}
QPainter painter(this);
painter.setClipRect(event-&gt;rect());
painter.save();
painter.setWindow(0, qRound(max), count * 20, qRound(-max));
painter.setViewport(20, 5, width() - 40, height() - 40);
for (int i = 0; i &lt; count; ++i) {
double value = data.at(i).value;
QColor c;
c.setHsv((i * 255)/count, 255, 255);<span class="comment">// rainbow effect</span>
painter.setBrush(c);
painter.drawRect(i * 20, 0, 20, qRound(value));
}
painter.restore();
painter.setClipRect(QRect());
}
void Graph::paintPie(QPaintEvent* event)
{
const int count = data.count();
double total = 0.0;
for (int i = 0; i &lt; count; ++i) {
double value = data.at(i).value;
total += value;
}
int apos = (pieRotation-90)*16;
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.setClipRect(event-&gt;rect());
QRect r(rect());
r.adjust(10, 10, -10, -10);
for (int i = 0; i &lt; count; ++i) {
double value = data.at(i).value;
QColor c;
c.setHsv((i * 255)/count, 255, 255);<span class="comment">// rainbow effect</span>
painter.setBrush( c );
int a = int((value * 360.0) / total * 16.0 + 0.5);
painter.drawPie(r, -apos, -a);
apos += a;
}
}
#include &quot;grapher.moc&quot;
QTNPFACTORY_BEGIN(&quot;Qt-based Graph Plugin&quot;, &quot;A Qt-based NSAPI plug-in that graphs numeric data&quot;);
QTNPCLASS(Graph)
QTNPFACTORY_END()
#ifdef QAXSERVER
#include &lt;ActiveQt/QAxFactory&gt;
QAXFACTORY_BEGIN(&quot;{89ab08da-df8c-4bd0-8327-72f73741c1a6}&quot;, &quot;{082bd921-0832-4ca7-ab5a-ec06ca7f3350}&quot;)
QAXCLASS(Graph)
QAXFACTORY_END()
#endif</pre>
<p /><address><hr /><div align="center">
<table width="100%" cellspacing="0" border="0"><tr class="address">
<td width="30%" align="left">Copyright &copy; 2010 Nokia Corporation and/or its subsidiary(-ies)</td>
<td width="40%" align="center"><a href="http://qt.nokia.com/doc/trademarks.html">Trademarks</a></td>
<td width="30%" align="right"><div align="right">Qt Solutions</div></td>
</tr></table></div></address></body>
</html>
Reference in New Issue View Git Blame Copy Permalink