summaryrefslogtreecommitdiffstats
path: root/tqtinterface/qt4/extensions/nsplugin/examples/grapher/grapher.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tqtinterface/qt4/extensions/nsplugin/examples/grapher/grapher.cpp')
-rw-r--r--tqtinterface/qt4/extensions/nsplugin/examples/grapher/grapher.cpp619
1 files changed, 0 insertions, 619 deletions
diff --git a/tqtinterface/qt4/extensions/nsplugin/examples/grapher/grapher.cpp b/tqtinterface/qt4/extensions/nsplugin/examples/grapher/grapher.cpp
deleted file mode 100644
index c6baf51..0000000
--- a/tqtinterface/qt4/extensions/nsplugin/examples/grapher/grapher.cpp
+++ /dev/null
@@ -1,619 +0,0 @@
-// Include TQt Netscape Plugin classes.
-#include "tqnp.h"
-
-// Include other TQt classes.
-#include <tqpainter.h>
-#include <tqtextstream.h>
-#include <tqbuffer.h>
-#include <tqpixmap.h>
-#include <tqmenubar.h>
-#include <tqpushbutton.h>
-#include <tqptrlist.h>
-#include <tqmessagebox.h>
-
-// Include some C library functions.
-#include <math.h>
-#include <stdlib.h>
-
-#ifndef M_PI // Some math.h don't include this.
-#define M_PI 3.14159265358979323846264338327950288
-#endif
-
-
-
-//
-// GraphModel is a simple abstract class that describes
-// a table of numeric and text data.
-//
-
-class GraphModel {
-public:
- enum ColType { Numeric, Label };
-
- union Datum {
- double dbl;
- TQString* str;
- };
-
- virtual TQPtrList<Datum>& graphData()=0;
- virtual ColType colType(int col) const=0;
- virtual int nCols() const=0;
-};
-
-
-//
-// Graph is a widget subclass that displays a GraphModel.
-// Since the widget is a TQNPWidget, it can be used as a plugin window,
-// returned by Grapher::newWindow() below.
-//
-
-class Graph : public TQNPWidget {
- TQ_OBJECT
-public:
- // Constructs a Graph to display a GraphModel
- //
- Graph(GraphModel&);
- ~Graph();
-
- // Two styles are available - Pie and Bar graph
- //
- enum Style { Pie, Bar };
- static const char* styleName[];
- void setStyle(Style);
- void setStyle(const char*);
-
- // Timer event processing rotates the pie graph
- //
- void timerEvent(TQTimerEvent*);
-
- // These functions are provided by TQNPWidget - we override
- // them to hide and show the plugin menubar.
- //
- void enterInstance();
- void leaveInstance();
-
- // Paint the graph...
- //
- void paintEvent(TQPaintEvent*);
- //
- // ... as either a "Loading" message, a Bar graph, a Pie graph,
- // or an error message.
- //
- void paintWait(TQPaintEvent*);
- void paintBar(TQPaintEvent*);
- void paintPie(TQPaintEvent*);
- void paintError(const char*);
-
-Q_SIGNALS:
- // Signals emitted when the Help menus are selected.
- void aboutPlugin();
- void aboutData();
-
-private:
- GraphModel& model;
- TQMenuBar *menubar;
- Style style;
- TQPopupMenu* stylemenu;
- int pieRotationTimer;
- int pieRotation;
- TQPixmap pm;
-
-private Q_SLOTS:
- void setStyleFromMenu(int id);
-};
-
-
-Graph::Graph( GraphModel& mdl ) :
- model(mdl),
- style(Bar),
- pieRotationTimer(0),
- pieRotation(0)
-{
- // Create a menubar for the widget
- //
- menubar = new TQMenuBar( this );
- stylemenu = new TQPopupMenu;
- stylemenu->setCheckable(TRUE);
- for ( Style s = Pie; styleName[s]; s = Style(s+1)) {
- stylemenu->insertItem(styleName[s], s+100);
- }
- connect(stylemenu, TQT_SIGNAL(activated(int)),
- this, TQT_SLOT(setStyleFromMenu(int)));
- setStyle(Pie);
-
- menubar->insertItem("Style", stylemenu);
- menubar->insertSeparator();
-
- TQPopupMenu* help = new TQPopupMenu;
- help->insertItem( "About plugin...", this, TQT_SIGNAL(aboutPlugin()) );
- help->insertItem( "About data...", this, TQT_SIGNAL(aboutData()) );
- menubar->insertItem("Help", help);
- menubar->hide();
-}
-
-Graph::~Graph()
-{
-}
-
-void Graph::setStyle(Style s)
-{
- if (style != s) {
- if (pieRotationTimer)
- killTimer(pieRotationTimer);
- stylemenu->setItemChecked(100+style, FALSE);
- style = s;
- if ( style == Pie )
- pieRotationTimer = startTimer( 80 );
- else
- pieRotationTimer = 0;
- stylemenu->setItemChecked(100+style, TRUE);
- update();
- }
-}
-
-void Graph::timerEvent(TQTimerEvent*)
-{
- pieRotation = ( pieRotation + 6 ) % 360; tqrepaint(FALSE);
-}
-
-void Graph::setStyle(const char* stext)
-{
- for ( Style s = Pie; styleName[s]; s = Style(s+1) ) {
- if ( qstricmp(stext,styleName[s])==0 ) {
- setStyle(s);
- return;
- }
- }
-}
-
-void Graph::enterInstance()
-{
- menubar->show();
-}
-
-void Graph::leaveInstance()
-{
- menubar->hide();
-}
-
-void Graph::paintError(const char* e)
-{
- TQPainter p(this);
- int w = width();
- p.drawText(w/8, 0, w-w/4, height(), AlignCenter|WordBreak, e);
-}
-
-void Graph::paintBar(TQPaintEvent* event)
-{
- if ( model.colType(0) != GraphModel::Numeric ) {
- paintError("First column not numeric, cannot draw bar graph\n");
- return;
- }
-
- TQPtrList<GraphModel::Datum>& data = model.graphData();
-
- double max = 0.0;
-
- for (GraphModel::Datum* rowdata = data.first();
- rowdata; rowdata = data.next())
- {
- if (rowdata[0].dbl > max) max = rowdata[0].dbl;
- }
-
- const uint w = width();
- const uint h = height();
-
- TQPainter p(this);
-
- p.setClipRect(event->rect());
-
- if ( w > data.count() ) {
- // More pixels than data
- int x = 0;
- int i = 0;
- TQFontMetrics fm=fontMetrics();
- int fh = fm.height();
-
- for (GraphModel::Datum* rowdata = data.first();
- rowdata; rowdata = data.next())
- {
- TQColor c;
- c.setHsv( (i * 255)/data.count(), 255, 255 );// rainbow effect
- p.setBrush(c);
- int bw = (w-w/4-x)/(data.count()-i);
- int bh = int((h-h/4-1)*rowdata[0].dbl/max);
- p.drawRect( w/8+x, h-h/8-1-bh, bw, bh );
-
- i++;
- x+=bw;
- }
- } else {
- // More data than pixels
- int x = 0;
- int i = 0;
- double av = 0.0;
- int n = 0;
- for (GraphModel::Datum* rowdata = data.first(); rowdata;
- rowdata = data.next())
- {
- int bx = i*w/data.count();
-
- if (bx > x) {
- TQColor c;
- c.setHsv( (x * 255)/w, 255, 255 );// rainbow effect
- p.setPen(c);
- int bh = int(h*av/n/max);
-
- p.drawLine(x,h-1,x,h-bh);
-
- av = 0.0;
- n = 0;
- x = bx;
- }
-
- av += rowdata[0].dbl;
- n++;
-
- i++;
- }
- }
-}
-
-void Graph::paintPie(TQPaintEvent* event)
-{
- if ( model.colType(0) != GraphModel::Numeric ) {
- paintError("First column not numeric, cannot draw pie graph\n");
- return;
- }
-
- TQPtrList<GraphModel::Datum>& data = model.graphData();
-
- double total = 0.0;
-
- GraphModel::Datum* rowdata;
-
- for (rowdata = data.first();
- rowdata; rowdata = data.next())
- {
- total += rowdata[0].dbl;
- }
-
- // Only use first column for pie chart
- if ( !total ) return;
-
- int apos = (pieRotation-90)*16;
-
- const int w = width();
- const int h = height();
-
- const int xd = w - w/5;
- const int yd = h - h/5;
-
- pm.resize(width(),height());
- pm.fill(backgroundColor());
- TQPainter p(&pm);
- p.setFont(font());
-
- p.setClipRect(event->rect());
-
- int i = 0;
-
- for (rowdata = data.first();
- rowdata; rowdata = data.next())
- {
- TQColor c;
-
- c.setHsv( ( i * 255)/data.count(), 255, 255 );// rainbow effect
- p.setBrush( c ); // solid fill with color c
-
- int a = int(( rowdata[0].dbl * 360.0 ) / total * 16.0 + 0.5);
- p.drawPie( w/10, h/10, xd, yd, -apos, -a );
- apos += a;
- i++;
- }
-
- if (model.colType(1) == GraphModel::Label) {
- double apos = (pieRotation-90)*M_PI/180;
-
- for (rowdata = data.first();
- rowdata; rowdata = data.next())
- {
- double a = rowdata[0].dbl * 360 / total * M_PI / 180;
- int x = int(cos(apos+a/2)*w*5/16 + w/2 + 0.5);
- int y = int(sin(apos+a/2)*h*5/16 + h/2 + 0.5);
-
- // ### This causes a crash, so comment out for now
- /*p.drawText(x-w/8, y-h/8, w/4, h/4,
- WordBreak|AlignCenter,
- *rowdata[1].str);*/
- apos += a;
- }
- }
-
- TQPainter p2(this);
- p2.setClipRect(event->rect());
- p2.drawPixmap(0,0,pm);
-}
-
-void Graph::paintWait(TQPaintEvent*)
-{
- TQPainter p(this);
- p.drawText(rect(), AlignCenter, "Loading...");
-}
-
-void Graph::paintEvent(TQPaintEvent* event)
-{
- if (!model.nCols()) {
- paintWait(event);
- } else {
- switch (style) {
- case Pie:
- paintPie(event);
- break;
- case Bar:
- paintBar(event);
- break;
- }
- }
-}
-
-void Graph::setStyleFromMenu(int id)
-{
- setStyle(Style(id-100));
-}
-
-const char* Graph::styleName[] = { "Pie", "Bar", 0 };
-
-
-//
-// Grapher is a subclass of TQNPInstance, and so it can be returned
-// by GrapherPlugin::newInstance(). A TQNPInstance represents the
-// plugin, distinctly from the plugin window.
-//
-// Grapher is also a GraphModel, because it loads graph data from
-// the net. When Grapher creates a window in newWindow(), it creates
-// a Graph widget to display the GraphModel that is the Grapher itself.
-//
-
-class Grapher : public TQNPInstance, GraphModel {
- TQ_OBJECT
-public:
- // Create a Grapher - all Grapher plugins are created
- // by one GrapherPlugin object.
- //
- Grapher();
- ~Grapher();
-
- // We override this TQNPInstance function to create our
- // own subclass of TQNPWidget, a Graph widget.
- //
- TQNPWidget* newWindow();
-
- // We override this TQNPInstance function to process the
- // incoming graph data.
- //
- int write(TQNPStream* /*str*/, int /*offset*/, int len, void* buffer);
-
-private:
- // Grapher is a GraphModel, so it implements the pure virtual
- // functions of that class.
- //
- TQPtrList<Datum>& graphData();
- ColType colType(int col) const;
- int nCols() const;
-
- void consumeLine();
- TQPtrList<Datum> data;
- TQBuffer line;
- int ncols;
- ColType *coltype;
-
-private Q_SLOTS:
- // Slots that are connected to the Graph menu items.
- //
- void aboutPlugin();
- void aboutData();
-};
-
-Grapher::Grapher()
-{
- data.setAutoDelete(TRUE);
- ncols = 0;
- line.open(IO_WriteOnly|IO_Truncate);
-}
-
-Grapher::~Grapher()
-{
-}
-
-TQPtrList<GraphModel::Datum>& Grapher::graphData()
-{
- return data;
-}
-
-GraphModel::ColType Grapher::colType(int col) const
-{
- return coltype[col];
-}
-
-int Grapher::nCols() const
-{
- return ncols;
-}
-
-
-TQNPWidget* Grapher::newWindow()
-{
- // Create a Graph - our subclass of TQNPWidget.
- Graph *graph = new Graph(*this);
-
- // Look at the arguments from the EMBED tag.
- // GRAPHSTYLE chooses pie or bar
- // FONTFAMILY and FONTSIZE choose the font
- //
- const char* style = arg("GRAPHSTYLE");
- if ( style ) graph->setStyle(style);
-
- const char* fontfamily = arg("FONTFAMILY");
- const char* fontsize = arg("FONTSIZE");
- int ptsize = fontsize ? atoi(fontsize) : graph->font().pointSize();
- if (fontfamily) graph->setFont(TQFont(fontfamily, ptsize));
-
- connect(graph, TQT_SIGNAL(aboutPlugin()), this, TQT_SLOT(aboutPlugin()));
- connect(graph, TQT_SIGNAL(aboutData()), this, TQT_SLOT(aboutData()));
-
- return graph;
-}
-
-void Grapher::consumeLine()
-{
- line.close();
- line.open(IO_ReadOnly);
-
- TQTextStream ts( &line );
-
- if (ncols == 0 ) {
- ncols=0;
- TQPtrList<ColType> typelist;
- typelist.setAutoDelete(TRUE);
- do {
- TQString typestr;
- ts >> typestr >> ws;
- ColType* t = 0;
- if ( typestr == "num" ) {
- t = new ColType(Numeric);
- } else if ( typestr == "label" ) {
- t = new ColType(Label);
- }
- if (t) typelist.append(t);
- } while (!ts.atEnd());
- coltype = new ColType[ncols];
- for (ColType* t = typelist.first(); t; t = typelist.next()) {
- coltype[ncols++] = *t;
- }
- } else {
- int col=0;
- Datum *rowdata = new Datum[ncols];
- while ( col < ncols && !ts.atEnd() ) {
- switch (coltype[col]) {
- case Numeric: {
- double value;
- ts >> value >> ws;
- rowdata[col].dbl = value;
- break;
- }
- case Label: {
- TQString* value = new TQString;
- ts >> *value >> ws;
- rowdata[col].str = value;
- break;
- }
- }
- col++;
- }
-
- data.append(rowdata);
- }
-
- line.close();
- line.open(IO_WriteOnly|IO_Truncate);
-}
-
-int Grapher::write(TQNPStream* /*str*/, int /*offset*/, int len, void* buffer)
-{
- // The browser calls this function when data is available on one
- // of the streams the plugin has requested. Since we are only
- // processing one stream - the URL in the SRC argument of the EMBED
- // tag, we assume the TQNPStream is that one. Also, since we do not
- // override TQNPInstance::writeReady(), we must accepts ALL the data
- // that is sent to this function.
- //
- char* txt = (char*)buffer;
- for (int i=0; i<len; i++) {
- char ch = txt[i];
- switch ( ch ) {
- case '\n':
- consumeLine();
- break;
- case '\r': // ignore;
- break;
- default:
- line.putch(ch);
- }
- }
- if ( widget() )
- widget()->update();
-
- return len;
-}
-
-void Grapher::aboutPlugin()
-{
- getURL( "http://doc.trolltech.com/netscape-plugin.html", "_blank" );
-}
-
-void Grapher::aboutData()
-{
- const char* page = arg("DATAPAGE");
- if (page)
- getURL( page, "_blank" );
- else
- TQMessageBox::message("Help", "No help for this data");
-}
-
-
-//
-// GrapherPlugin is the start of everything. It is a TQNPlugin subclass,
-// and it is responsible for describing the plugin to the browser, and
-// creating instances of the plugin when it appears in web page.
-//
-
-class GrapherPlugin : public TQNPlugin {
-public:
- GrapherPlugin()
- {
- }
-
- TQNPInstance* newInstance()
- {
- // Make a new Grapher, our subclass of TQNPInstance.
- return new Grapher;
- }
-
- const char* getMIMEDescription() const
- {
- // Describe the MIME types which this plugin can
- // process. Just the concocted "application/x-graphable"
- // type, with the "g1n" filename extension.
- //
- return "application/x-graphable:g1n:Graphable ASCII numeric data";
- }
-
- const char * getPluginNameString() const
- {
- // The name of the plugin. This is the title string used in
- // the "About Plugins" page of the browser.
- //
- return "TQt-based Graph Plugin";
- }
-
- const char * getPluginDescriptionString() const
- {
- // A longer description of the plugin.
- //
- return "A TQt-based LiveConnected plug-in that graphs numeric data";
- }
-
-};
-
-//
-// Finally, we provide the implementation of TQNPlugin::create(), to
-// provide our subclass of TQNPlugin.
-//
-
-TQNPlugin* TQNPlugin::create()
-{
- return new GrapherPlugin;
-}
-
-#include "grapher.tqmoc"
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 05:32:13 +0000