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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/chart/chart.doc:1 -->
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>A Complete Canvas Application</title>
+<style type="text/css"><!--
+fn { margin-left: 1cm; text-indent: -1cm; }
+a:link { color: #004faf; text-decoration: none }
+a:visited { color: #672967; text-decoration: none }
+body { background: #ffffff; color: black; }
+--></style>
+</head>
+<body>
+
+<table border="0" cellpadding="0" cellspacing="0" width="100%">
+<tr bgcolor="#E5E5E5">
+<td valign=center>
+ <a href="index.html">
+<font color="#004faf">Home</font></a>
+ | <a href="classes.html">
+<font color="#004faf">All&nbsp;Classes</font></a>
+ | <a href="mainclasses.html">
+<font color="#004faf">Main&nbsp;Classes</font></a>
+ | <a href="annotated.html">
+<font color="#004faf">Annotated</font></a>
+ | <a href="groups.html">
+<font color="#004faf">Grouped&nbsp;Classes</font></a>
+ | <a href="functions.html">
+<font color="#004faf">Functions</font></a>
+</td>
+<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A Complete Canvas Application</h1>
+
+
+
+<p>
+<p> This is a complete example program with a main window, menus and
+toolbars. The main widget is a <a href="qcanvas.html">TQCanvas</a>, and this example
+demonstrates basic canvas usage.
+
+<p> <hr>
+<p> Project file:
+<p> <pre>TEMPLATE = app
+
+CONFIG += warn_on
+
+RETQUIRES = full-config
+
+HEADERS += element.h \
+ canvastext.h \
+ canvasview.h \
+ chartform.h \
+ optionsform.h \
+ setdataform.h
+SOURCES += element.cpp \
+ canvasview.cpp \
+ chartform.cpp \
+ chartform_canvas.cpp \
+ chartform_files.cpp \
+ optionsform.cpp \
+ setdataform.cpp \
+ main.cpp
+</pre>
+
+<p> <hr>
+<p> Header files:
+<p> <pre>#ifndef ELEMENT_H
+#define ELEMENT_H
+
+#include &lt;<a href="qcolor-h.html">qcolor.h</a>&gt;
+#include &lt;<a href="qnamespace-h.html">qnamespace.h</a>&gt;
+#include &lt;<a href="qstring-h.html">qstring.h</a>&gt;
+#include &lt;<a href="qvaluevector-h.html">qvaluevector.h</a>&gt;
+
+class Element;
+
+typedef TQValueVector&lt;Element&gt; ElementVector;
+
+/*
+ Elements are valid if they have a value which is &gt; EPSILON.
+*/
+const double EPSILON = 0.0000001; // Must be &gt; INVALID.
+
+
+class Element
+{
+public:
+ enum { INVALID = -1 };
+ enum { NO_PROPORTION = -1 };
+ enum { MAX_PROPOINTS = 3 }; // One proportional point per chart type
+
+ Element( double value = INVALID, TQColor valueColor = TQt::gray,
+ int valuePattern = TQt::SolidPattern,
+ const <a href="qstring.html">TQString</a>&amp; label = <a href="qstring.html#TQString-null">TQString::null</a>,
+ <a href="qcolor.html">TQColor</a> labelColor = TQt::black ) {
+ init( value, valueColor, valuePattern, label, labelColor );
+ for ( int i = 0; i &lt; MAX_PROPOINTS * 2; ++i )
+ m_propoints[i] = NO_PROPORTION;
+ }
+ ~Element() {}
+
+ bool isValid() const { return m_value &gt; EPSILON; }
+
+ double value() const { return m_value; }
+ <a href="qcolor.html">TQColor</a> valueColor() const { return m_valueColor; }
+ int valuePattern() const { return m_valuePattern; }
+ <a href="qstring.html">TQString</a> label() const { return m_label; }
+ <a href="qcolor.html">TQColor</a> labelColor() const { return m_labelColor; }
+ double proX( int index ) const;
+ double proY( int index ) const;
+
+ void set( double value = INVALID, TQColor valueColor = TQt::gray,
+ int valuePattern = TQt::SolidPattern,
+ const <a href="qstring.html">TQString</a>&amp; label = TQString::null,
+ <a href="qcolor.html">TQColor</a> labelColor = TQt::black ) {
+ init( value, valueColor, valuePattern, label, labelColor );
+ }
+ void setValue( double value ) { m_value = value; }
+ void setValueColor( <a href="qcolor.html">TQColor</a> valueColor ) { m_valueColor = valueColor; }
+ void setValuePattern( int valuePattern );
+ void setLabel( const <a href="qstring.html">TQString</a>&amp; label ) { m_label = label; }
+ void setLabelColor( <a href="qcolor.html">TQColor</a> labelColor ) { m_labelColor = labelColor; }
+ void setProX( int index, double value );
+ void setProY( int index, double value );
+
+#ifdef Q_FULL_TEMPLATE_INSTANTIATION
+ // xlC 3.x workaround
+ Q_DUMMY_COMPARISON_OPERATOR(Element)
+ bool operator!=( const Element&amp; e) const {
+ return ( !(e == *this) );
+ }
+#endif
+
+private:
+ void init( double value, TQColor valueColor, int valuePattern,
+ const <a href="qstring.html">TQString</a>&amp; label, TQColor labelColor );
+
+ double m_value;
+ <a href="qcolor.html">TQColor</a> m_valueColor;
+ int m_valuePattern;
+ <a href="qstring.html">TQString</a> m_label;
+ <a href="qcolor.html">TQColor</a> m_labelColor;
+ double m_propoints[2 * MAX_PROPOINTS];
+};
+
+
+TQTextStream &amp;operator&lt;&lt;( <a href="qtextstream.html">TQTextStream</a>&amp;, const Element&amp; );
+TQTextStream &amp;operator&gt;&gt;( <a href="qtextstream.html">TQTextStream</a>&amp;, Element&amp; );
+
+#endif
+</pre>
+
+<pre>#ifndef CHARTFORM_H
+#define CHARTFORM_H
+
+#include "element.h"
+
+#include &lt;<a href="qmainwindow-h.html">qmainwindow.h</a>&gt;
+#include &lt;<a href="qstringlist-h.html">qstringlist.h</a>&gt;
+
+
+class CanvasView;
+
+class TQAction;
+class TQCanvas;
+class TQFont;
+class TQPrinter;
+class TQString;
+
+
+class ChartForm: public <a href="qmainwindow.html">TQMainWindow</a>
+{
+ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
+public:
+ enum { MAX_ELEMENTS = 100 };
+ enum { MAX_RECENTFILES = 9 }; // Must not exceed 9
+ enum ChartType { PIE, VERTICAL_BAR, HORIZONTAL_BAR };
+ enum AddValuesType { NO, YES, AS_PERCENTAGE };
+
+ ChartForm( const <a href="qstring.html">TQString</a>&amp; filename );
+ ~ChartForm();
+
+ int chartType() { return m_chartType; }
+ void setChanged( bool changed = TRUE ) { m_changed = changed; }
+ void drawElements();
+
+ <a href="qpopupmenu.html">TQPopupMenu</a> *optionsMenu; // Why public? See canvasview.cpp
+
+protected:
+ virtual void closeEvent( <a href="qcloseevent.html">TQCloseEvent</a> * );
+
+private slots:
+ void fileNew();
+ void fileOpen();
+ void fileOpenRecent( int index );
+ void fileSave();
+ void fileSaveAs();
+ void fileSaveAsPixmap();
+ void filePrint();
+ void fileQuit();
+ void optionsSetData();
+ void updateChartType( <a href="qaction.html">TQAction</a> *action );
+ void optionsSetFont();
+ void optionsSetOptions();
+ void helpHelp();
+ void helpAbout();
+ void helpAboutTQt();
+ void saveOptions();
+
+private:
+ void init();
+ void load( const <a href="qstring.html">TQString</a>&amp; filename );
+ bool okToClear();
+ void drawPieChart( const double scales[], double total, int count );
+ void drawVerticalBarChart( const double scales[], double total, int count );
+ void drawHorizontalBarChart( const double scales[], double total, int count );
+
+ <a href="qstring.html">TQString</a> valueLabel( const <a href="qstring.html">TQString</a>&amp; label, double value, double total );
+ void updateRecentFiles( const <a href="qstring.html">TQString</a>&amp; filename );
+ void updateRecentFilesMenu();
+ void setChartType( ChartType chartType );
+
+ <a href="qpopupmenu.html">TQPopupMenu</a> *fileMenu;
+ <a href="qaction.html">TQAction</a> *optionsPieChartAction;
+ <a href="qaction.html">TQAction</a> *optionsHorizontalBarChartAction;
+ <a href="qaction.html">TQAction</a> *optionsVerticalBarChartAction;
+
+
+ <a href="qstring.html">TQString</a> m_filename;
+ <a href="qstringlist.html">TQStringList</a> m_recentFiles;
+ <a href="qcanvas.html">TQCanvas</a> *m_canvas;
+ CanvasView *m_canvasView;
+ bool m_changed;
+ ElementVector m_elements;
+ <a href="qprinter.html">TQPrinter</a> *m_printer;
+ ChartType m_chartType;
+ AddValuesType m_addValues;
+ int m_decimalPlaces;
+ <a href="qfont.html">TQFont</a> m_font;
+};
+
+#endif
+</pre>
+
+<p> <hr>
+<p> Implementation:
+<p> <pre>#include "canvasview.h"
+#include "chartform.h"
+#include "optionsform.h"
+#include "setdataform.h"
+
+#include &lt;<a href="qaction-h.html">qaction.h</a>&gt;
+#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
+#include &lt;<a href="qcombobox-h.html">qcombobox.h</a>&gt;
+#include &lt;<a href="qfile-h.html">qfile.h</a>&gt;
+#include &lt;<a href="qfiledialog-h.html">qfiledialog.h</a>&gt;
+#include &lt;<a href="qfont-h.html">qfont.h</a>&gt;
+#include &lt;<a href="qfontdialog-h.html">qfontdialog.h</a>&gt;
+#include &lt;<a href="qmenubar-h.html">qmenubar.h</a>&gt;
+#include &lt;<a href="qmessagebox-h.html">qmessagebox.h</a>&gt;
+#include &lt;<a href="qpixmap-h.html">qpixmap.h</a>&gt;
+#include &lt;<a href="qpopupmenu-h.html">qpopupmenu.h</a>&gt;
+#include &lt;<a href="qprinter-h.html">qprinter.h</a>&gt;
+#include &lt;<a href="qradiobutton-h.html">qradiobutton.h</a>&gt;
+#include &lt;<a href="qsettings-h.html">qsettings.h</a>&gt;
+#include &lt;<a href="qspinbox-h.html">qspinbox.h</a>&gt;
+#include &lt;<a href="qstatusbar-h.html">qstatusbar.h</a>&gt;
+#include &lt;<a href="qtoolbar-h.html">qtoolbar.h</a>&gt;
+#include &lt;<a href="qtoolbutton-h.html">qtoolbutton.h</a>&gt;
+
+#include "images/file_new.xpm"
+#include "images/file_open.xpm"
+#include "images/file_save.xpm"
+#include "images/file_print.xpm"
+#include "images/options_setdata.xpm"
+#include "images/options_setfont.xpm"
+#include "images/options_setoptions.xpm"
+#include "images/options_horizontalbarchart.xpm"
+#include "images/options_piechart.xpm"
+#include "images/options_verticalbarchart.xpm"
+
+
+const <a href="qstring.html">TQString</a> WINDOWS_REGISTRY = "/Trolltech/TQtExamples";
+const <a href="qstring.html">TQString</a> APP_KEY = "/Chart/";
+
+
+<a name="f596"></a>ChartForm::ChartForm( const <a href="qstring.html">TQString</a>&amp; filename )
+ : <a href="qmainwindow.html">TQMainWindow</a>( 0, 0, WDestructiveClose )
+{
+ <a href="qwidget.html#setIcon">setIcon</a>( TQPixmap( options_piechart ) );
+
+ <a href="qaction.html">TQAction</a> *fileNewAction;
+ <a href="qaction.html">TQAction</a> *fileOpenAction;
+ <a href="qaction.html">TQAction</a> *fileSaveAction;
+ <a href="qaction.html">TQAction</a> *fileSaveAsAction;
+ <a href="qaction.html">TQAction</a> *fileSaveAsPixmapAction;
+ <a href="qaction.html">TQAction</a> *filePrintAction;
+ <a href="qaction.html">TQAction</a> *fileQuitAction;
+ <a href="qaction.html">TQAction</a> *optionsSetDataAction;
+ <a href="qaction.html">TQAction</a> *optionsSetFontAction;
+ <a href="qaction.html">TQAction</a> *optionsSetOptionsAction;
+
+ fileNewAction = new <a href="qaction.html">TQAction</a>(
+ "New Chart", TQPixmap( file_new ),
+ "&amp;New", CTRL+Key_N, this, "new" );
+<a name="x2869"></a> <a href="qobject.html#connect">connect</a>( fileNewAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ), this, SLOT( fileNew() ) );
+
+ fileOpenAction = new <a href="qaction.html">TQAction</a>(
+ "Open Chart", TQPixmap( file_open ),
+ "&amp;Open...", CTRL+Key_O, this, "open" );
+ <a href="qobject.html#connect">connect</a>( fileOpenAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ), this, SLOT( fileOpen() ) );
+
+ fileSaveAction = new <a href="qaction.html">TQAction</a>(
+ "Save Chart", TQPixmap( file_save ),
+ "&amp;Save", CTRL+Key_S, this, "save" );
+ <a href="qobject.html#connect">connect</a>( fileSaveAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ), this, SLOT( fileSave() ) );
+
+ fileSaveAsAction = new <a href="qaction.html">TQAction</a>(
+ "Save Chart As", TQPixmap( file_save ),
+ "Save &amp;As...", 0, this, "save as" );
+ <a href="qobject.html#connect">connect</a>( fileSaveAsAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ),
+ this, SLOT( fileSaveAs() ) );
+
+ fileSaveAsPixmapAction = new <a href="qaction.html">TQAction</a>(
+ "Save Chart As Bitmap", TQPixmap( file_save ),
+ "Save As &amp;Bitmap...", CTRL+Key_B, this, "save as bitmap" );
+ <a href="qobject.html#connect">connect</a>( fileSaveAsPixmapAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ),
+ this, SLOT( fileSaveAsPixmap() ) );
+
+ filePrintAction = new <a href="qaction.html">TQAction</a>(
+ "Print Chart", TQPixmap( file_print ),
+ "&amp;Print Chart...", CTRL+Key_P, this, "print chart" );
+ <a href="qobject.html#connect">connect</a>( filePrintAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ),
+ this, SLOT( filePrint() ) );
+
+ optionsSetDataAction = new <a href="qaction.html">TQAction</a>(
+ "Set Data", TQPixmap( options_setdata ),
+ "Set &amp;Data...", CTRL+Key_D, this, "set data" );
+ <a href="qobject.html#connect">connect</a>( optionsSetDataAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ),
+ this, SLOT( optionsSetData() ) );
+
+
+ <a href="qactiongroup.html">TQActionGroup</a> *chartGroup = new <a href="qactiongroup.html">TQActionGroup</a>( this ); // Connected later
+<a name="x2874"></a> chartGroup-&gt;<a href="qactiongroup.html#setExclusive">setExclusive</a>( TRUE );
+
+ optionsPieChartAction = new <a href="qaction.html">TQAction</a>(
+ "Pie Chart", TQPixmap( options_piechart ),
+ "&amp;Pie Chart", CTRL+Key_I, chartGroup, "pie chart" );
+<a name="x2872"></a> optionsPieChartAction-&gt;<a href="qaction.html#setToggleAction">setToggleAction</a>( TRUE );
+
+ optionsHorizontalBarChartAction = new <a href="qaction.html">TQAction</a>(
+ "Horizontal Bar Chart", TQPixmap( options_horizontalbarchart ),
+ "&amp;Horizontal Bar Chart", CTRL+Key_H, chartGroup,
+ "horizontal bar chart" );
+ optionsHorizontalBarChartAction-&gt;<a href="qaction.html#setToggleAction">setToggleAction</a>( TRUE );
+
+ optionsVerticalBarChartAction = new <a href="qaction.html">TQAction</a>(
+ "Vertical Bar Chart", TQPixmap( options_verticalbarchart ),
+ "&amp;Vertical Bar Chart", CTRL+Key_V, chartGroup, "Vertical bar chart" );
+ optionsVerticalBarChartAction-&gt;<a href="qaction.html#setToggleAction">setToggleAction</a>( TRUE );
+
+
+ optionsSetFontAction = new <a href="qaction.html">TQAction</a>(
+ "Set Font", TQPixmap( options_setfont ),
+ "Set &amp;Font...", CTRL+Key_F, this, "set font" );
+ <a href="qobject.html#connect">connect</a>( optionsSetFontAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ),
+ this, SLOT( optionsSetFont() ) );
+
+ optionsSetOptionsAction = new <a href="qaction.html">TQAction</a>(
+ "Set Options", TQPixmap( options_setoptions ),
+ "Set &amp;Options...", 0, this, "set options" );
+ <a href="qobject.html#connect">connect</a>( optionsSetOptionsAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ),
+ this, SLOT( optionsSetOptions() ) );
+
+ fileQuitAction = new <a href="qaction.html">TQAction</a>( "Quit", "&amp;Quit", CTRL+Key_Q, this, "tquit" );
+ <a href="qobject.html#connect">connect</a>( fileQuitAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ), this, SLOT( fileQuit() ) );
+
+
+ <a href="qtoolbar.html">TQToolBar</a>* fileTools = new <a href="qtoolbar.html">TQToolBar</a>( this, "file operations" );
+<a name="x2895"></a> fileTools-&gt;<a href="qtoolbar.html#setLabel">setLabel</a>( "File Operations" );
+<a name="x2870"></a> fileNewAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileTools );
+ fileOpenAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileTools );
+ fileSaveAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileTools );
+<a name="x2894"></a> fileTools-&gt;<a href="qtoolbar.html#addSeparator">addSeparator</a>();
+ filePrintAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileTools );
+
+ <a href="qtoolbar.html">TQToolBar</a> *optionsTools = new <a href="qtoolbar.html">TQToolBar</a>( this, "options operations" );
+ optionsTools-&gt;<a href="qtoolbar.html#setLabel">setLabel</a>( "Options Operations" );
+ optionsSetDataAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsTools );
+ optionsTools-&gt;<a href="qtoolbar.html#addSeparator">addSeparator</a>();
+ optionsPieChartAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsTools );
+ optionsHorizontalBarChartAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsTools );
+ optionsVerticalBarChartAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsTools );
+ optionsTools-&gt;<a href="qtoolbar.html#addSeparator">addSeparator</a>();
+ optionsSetFontAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsTools );
+ optionsTools-&gt;<a href="qtoolbar.html#addSeparator">addSeparator</a>();
+ optionsSetOptionsAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsTools );
+
+ fileMenu = new <a href="qpopupmenu.html">TQPopupMenu</a>( this );
+ <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( "&amp;File", fileMenu );
+ fileNewAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+ fileOpenAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+ fileSaveAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+ fileSaveAsAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+ fileMenu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
+ fileSaveAsPixmapAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+ fileMenu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
+ filePrintAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+ fileMenu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
+ fileQuitAction-&gt;<a href="qaction.html#addTo">addTo</a>( fileMenu );
+
+ optionsMenu = new <a href="qpopupmenu.html">TQPopupMenu</a>( this );
+ <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( "&amp;Options", optionsMenu );
+ optionsSetDataAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsMenu );
+ optionsMenu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
+ optionsPieChartAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsMenu );
+ optionsHorizontalBarChartAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsMenu );
+ optionsVerticalBarChartAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsMenu );
+ optionsMenu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
+ optionsSetFontAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsMenu );
+ optionsMenu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
+ optionsSetOptionsAction-&gt;<a href="qaction.html#addTo">addTo</a>( optionsMenu );
+
+ <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertSeparator();
+
+ <a href="qpopupmenu.html">TQPopupMenu</a> *helpMenu = new <a href="qpopupmenu.html">TQPopupMenu</a>( this );
+ <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( "&amp;Help", helpMenu );
+ helpMenu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Help", this, SLOT(helpHelp()), Key_F1 );
+ helpMenu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;About", this, SLOT(helpAbout()) );
+ helpMenu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "About &amp;TQt", this, SLOT(helpAboutTQt()) );
+
+
+ m_printer = 0;
+ m_elements.resize( MAX_ELEMENTS );
+
+ <a href="qsettings.html">TQSettings</a> settings;
+<a name="x2890"></a> settings.<a href="qsettings.html#insertSearchPath">insertSearchPath</a>( TQSettings::Windows, WINDOWS_REGISTRY );
+ int windowWidth = settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "WindowWidth", 460 );
+ int windowHeight = settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "WindowHeight", 530 );
+ int windowX = settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "WindowX", -1 );
+ int windowY = settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "WindowY", -1 );
+ setChartType( ChartType(
+ settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "ChartType", int(PIE) ) ) );
+ m_addValues = AddValuesType(
+ settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "AddValues", int(NO) ));
+ m_decimalPlaces = settings.<a href="qsettings.html#readNumEntry">readNumEntry</a>( APP_KEY + "Decimals", 2 );
+ m_font = TQFont( "Helvetica", 18, TQFont::Bold );
+ m_font.fromString(
+ settings.<a href="qsettings.html#readEntry">readEntry</a>( APP_KEY + "Font", m_font.toString() ) );
+ for ( int i = 0; i &lt; MAX_RECENTFILES; ++i ) {
+ <a href="qstring.html">TQString</a> filename = settings.<a href="qsettings.html#readEntry">readEntry</a>( APP_KEY + "File" +
+<a name="x2893"></a> TQString::<a href="qstring.html#number">number</a>( i + 1 ) );
+<a name="x2892"></a> if ( !filename.<a href="qstring.html#isEmpty">isEmpty</a>() )
+ m_recentFiles.push_back( filename );
+ }
+ if ( m_recentFiles.count() )
+ updateRecentFilesMenu();
+
+
+ // Connect *after* we've set the chart type on so we don't call
+ // drawElements() prematurely.
+<a name="x2873"></a> <a href="qobject.html#connect">connect</a>( chartGroup, SIGNAL( <a href="qactiongroup.html#selected">selected</a>(TQAction*) ),
+ this, SLOT( updateChartType(TQAction*) ) );
+
+ <a href="qwidget.html#resize">resize</a>( windowWidth, windowHeight );
+ if ( windowX != -1 || windowY != -1 )
+ <a href="qwidget.html#move">move</a>( windowX, windowY );
+
+ m_canvas = new <a href="qcanvas.html">TQCanvas</a>( this );
+<a name="x2876"></a> m_canvas-&gt;<a href="qcanvas.html#resize">resize</a>( <a href="qwidget.html#width">width</a>(), height() );
+ m_canvasView = new CanvasView( m_canvas, &amp;m_elements, this );
+ <a href="qmainwindow.html#setCentralWidget">setCentralWidget</a>( m_canvasView );
+ m_canvasView-&gt;<a href="qwidget.html#show">show</a>();
+
+ if ( !filename.<a href="qstring.html#isEmpty">isEmpty</a>() )
+ load( filename );
+ else {
+ init();
+ m_elements[0].set( 20, red, 14, "Red" );
+ m_elements[1].set( 70, cyan, 2, "Cyan", darkGreen );
+ m_elements[2].set( 35, blue, 11, "Blue" );
+ m_elements[3].set( 55, yellow, 1, "Yellow", darkBlue );
+ m_elements[4].set( 80, magenta, 1, "Magenta" );
+ drawElements();
+ }
+
+ <a href="qmainwindow.html#statusBar">statusBar</a>()-&gt;message( "Ready", 2000 );
+}
+
+
+ChartForm::~ChartForm()
+{
+ delete m_printer;
+}
+
+
+void <a name="f597"></a>ChartForm::init()
+{
+ <a href="qwidget.html#setCaption">setCaption</a>( "Chart" );
+ m_filename = TQString::null;
+ m_changed = FALSE;
+
+ m_elements[0] = Element( Element::INVALID, red );
+ m_elements[1] = Element( Element::INVALID, cyan );
+ m_elements[2] = Element( Element::INVALID, blue );
+ m_elements[3] = Element( Element::INVALID, yellow );
+ m_elements[4] = Element( Element::INVALID, green );
+ m_elements[5] = Element( Element::INVALID, magenta );
+ m_elements[6] = Element( Element::INVALID, darkYellow );
+ m_elements[7] = Element( Element::INVALID, darkRed );
+ m_elements[8] = Element( Element::INVALID, darkCyan );
+ m_elements[9] = Element( Element::INVALID, darkGreen );
+ m_elements[10] = Element( Element::INVALID, darkMagenta );
+ m_elements[11] = Element( Element::INVALID, darkBlue );
+ for ( int i = 12; i &lt; MAX_ELEMENTS; ++i ) {
+ double x = (double(i) / MAX_ELEMENTS) * 360;
+ int y = (int(x * 256) % 105) + 151;
+ int z = ((i * 17) % 105) + 151;
+ m_elements[i] = Element( Element::INVALID, TQColor( int(x), y, z, TQColor::Hsv ) );
+ }
+}
+
+<a name="x2896"></a>void ChartForm::<a href="qwidget.html#closeEvent">closeEvent</a>( <a href="qcloseevent.html">TQCloseEvent</a> * )
+{
+ fileQuit();
+}
+
+
+void <a name="f598"></a>ChartForm::fileNew()
+{
+ if ( okToClear() ) {
+ init();
+ drawElements();
+ }
+}
+
+
+void <a name="f599"></a>ChartForm::fileOpen()
+{
+ if ( !okToClear() )
+ return;
+
+ <a href="qstring.html">TQString</a> filename = TQFileDialog::<a href="qfiledialog.html#getOpenFileName">getOpenFileName</a>(
+ TQString::null, "Charts (*.cht)", this,
+ "file open", "Chart -- File Open" );
+ if ( !filename.<a href="qstring.html#isEmpty">isEmpty</a>() )
+ load( filename );
+ else
+ <a href="qmainwindow.html#statusBar">statusBar</a>()-&gt;message( "File Open abandoned", 2000 );
+}
+
+
+void <a name="f600"></a>ChartForm::fileSaveAs()
+{
+ <a href="qstring.html">TQString</a> filename = TQFileDialog::<a href="qfiledialog.html#getSaveFileName">getSaveFileName</a>(
+ TQString::null, "Charts (*.cht)", this,
+ "file save as", "Chart -- File Save As" );
+ if ( !filename.<a href="qstring.html#isEmpty">isEmpty</a>() ) {
+ int answer = 0;
+<a name="x2878"></a> if ( TQFile::<a href="qfile.html#exists">exists</a>( filename ) )
+<a name="x2889"></a> answer = TQMessageBox::<a href="qmessagebox.html#warning">warning</a>(
+ this, "Chart -- Overwrite File",
+ TQString( "Overwrite\n\'%1\'?" ).
+ arg( filename ),
+ "&amp;Yes", "&amp;No", TQString::null, 1, 1 );
+ if ( answer == 0 ) {
+ m_filename = filename;
+ updateRecentFiles( filename );
+ fileSave();
+ return;
+ }
+ }
+ <a href="qmainwindow.html#statusBar">statusBar</a>()-&gt;message( "Saving abandoned", 2000 );
+}
+
+
+void <a name="f601"></a>ChartForm::fileOpenRecent( int index )
+{
+ if ( !okToClear() )
+ return;
+
+ load( m_recentFiles[index] );
+}
+
+
+void <a name="f602"></a>ChartForm::updateRecentFiles( const <a href="qstring.html">TQString</a>&amp; filename )
+{
+ if ( m_recentFiles.find( filename ) != m_recentFiles.end() )
+ return;
+
+ m_recentFiles.push_back( filename );
+ if ( m_recentFiles.count() &gt; MAX_RECENTFILES )
+ m_recentFiles.pop_front();
+
+ updateRecentFilesMenu();
+}
+
+
+void <a name="f603"></a>ChartForm::updateRecentFilesMenu()
+{
+ for ( int i = 0; i &lt; MAX_RECENTFILES; ++i ) {
+<a name="x2882"></a> if ( fileMenu-&gt;<a href="qmenudata.html#findItem">findItem</a>( i ) )
+<a name="x2885"></a> fileMenu-&gt;<a href="qmenudata.html#removeItem">removeItem</a>( i );
+ if ( i &lt; int(m_recentFiles.count()) )
+ fileMenu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( TQString( "&amp;%1 %2" ).
+ arg( i + 1 ).arg( m_recentFiles[i] ),
+ this, SLOT( fileOpenRecent(int) ),
+ 0, i );
+ }
+}
+
+
+void <a name="f604"></a>ChartForm::fileQuit()
+{
+ if ( okToClear() ) {
+ saveOptions();
+<a name="x2875"></a> qApp-&gt;<a href="qapplication.html#exit">exit</a>( 0 );
+ }
+}
+
+
+bool <a name="f605"></a>ChartForm::okToClear()
+{
+ if ( m_changed ) {
+ <a href="qstring.html">TQString</a> msg;
+ if ( m_filename.isEmpty() )
+ msg = "Unnamed chart ";
+ else
+ msg = TQString( "Chart '%1'\n" ).arg( m_filename );
+ msg += "has been changed.";
+
+ int x = TQMessageBox::<a href="qmessagebox.html#information">information</a>( this, "Chart -- Unsaved Changes",
+ msg, "&amp;Save", "Cancel", "&amp;Abandon",
+ 0, 1 );
+ switch( x ) {
+ case 0: // Save
+ fileSave();
+ break;
+ case 1: // Cancel
+ default:
+ return FALSE;
+ case 2: // Abandon
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+
+void <a name="f606"></a>ChartForm::saveOptions()
+{
+ <a href="qsettings.html">TQSettings</a> settings;
+ settings.<a href="qsettings.html#insertSearchPath">insertSearchPath</a>( TQSettings::Windows, WINDOWS_REGISTRY );
+<a name="x2891"></a> settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "WindowWidth", width() );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "WindowHeight", height() );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "WindowX", x() );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "WindowY", y() );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "ChartType", int(m_chartType) );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "AddValues", int(m_addValues) );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "Decimals", m_decimalPlaces );
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "Font", m_font.toString() );
+ for ( int i = 0; i &lt; int(m_recentFiles.count()); ++i )
+ settings.<a href="qsettings.html#writeEntry">writeEntry</a>( APP_KEY + "File" + TQString::number( i + 1 ),
+ m_recentFiles[i] );
+}
+
+
+void <a name="f607"></a>ChartForm::optionsSetData()
+{
+ SetDataForm *setDataForm = new SetDataForm( &amp;m_elements, m_decimalPlaces, this );
+<a name="x2877"></a> if ( setDataForm-&gt;<a href="qdialog.html#exec">exec</a>() ) {
+ m_changed = TRUE;
+ drawElements();
+ }
+ delete setDataForm;
+}
+
+
+void <a name="f608"></a>ChartForm::setChartType( ChartType chartType )
+{
+ m_chartType = chartType;
+ switch ( m_chartType ) {
+ case PIE:
+<a name="x2871"></a> optionsPieChartAction-&gt;<a href="qaction.html#setOn">setOn</a>( TRUE );
+ break;
+ case VERTICAL_BAR:
+ optionsVerticalBarChartAction-&gt;<a href="qaction.html#setOn">setOn</a>( TRUE );
+ break;
+ case HORIZONTAL_BAR:
+ optionsHorizontalBarChartAction-&gt;<a href="qaction.html#setOn">setOn</a>( TRUE );
+ break;
+ }
+}
+
+
+void <a name="f609"></a>ChartForm::updateChartType( <a href="qaction.html">TQAction</a> *action )
+{
+ if ( action == optionsPieChartAction ) {
+ m_chartType = PIE;
+ }
+ else if ( action == optionsHorizontalBarChartAction ) {
+ m_chartType = HORIZONTAL_BAR;
+ }
+ else if ( action == optionsVerticalBarChartAction ) {
+ m_chartType = VERTICAL_BAR;
+ }
+
+ drawElements();
+}
+
+
+void <a name="f610"></a>ChartForm::optionsSetFont()
+{
+ bool ok;
+<a name="x2881"></a> <a href="qfont.html">TQFont</a> font = TQFontDialog::<a href="qfontdialog.html#getFont">getFont</a>( &amp;ok, m_font, this );
+ if ( ok ) {
+ m_font = font;
+ drawElements();
+ }
+}
+
+
+void <a name="f611"></a>ChartForm::optionsSetOptions()
+{
+ OptionsForm *optionsForm = new OptionsForm( this );
+ optionsForm-&gt;chartTypeComboBox-&gt;setCurrentItem( m_chartType );
+ optionsForm-&gt;<a href="qwidget.html#setFont">setFont</a>( m_font );
+ switch ( m_addValues ) {
+ case NO:
+ optionsForm-&gt;noRadioButton-&gt;setChecked( TRUE );
+ break;
+ case YES:
+ optionsForm-&gt;yesRadioButton-&gt;setChecked( TRUE );
+ break;
+ case AS_PERCENTAGE:
+ optionsForm-&gt;asPercentageRadioButton-&gt;setChecked( TRUE );
+ break;
+ }
+ optionsForm-&gt;decimalPlacesSpinBox-&gt;setValue( m_decimalPlaces );
+ if ( optionsForm-&gt;<a href="qdialog.html#exec">exec</a>() ) {
+ setChartType( ChartType(
+ optionsForm-&gt;chartTypeComboBox-&gt;currentItem()) );
+<a name="x2897"></a> m_font = optionsForm-&gt;<a href="qwidget.html#font">font</a>();
+ if ( optionsForm-&gt;noRadioButton-&gt;isChecked() )
+ m_addValues = NO;
+ else if ( optionsForm-&gt;yesRadioButton-&gt;isChecked() )
+ m_addValues = YES;
+ else if ( optionsForm-&gt;asPercentageRadioButton-&gt;isChecked() )
+ m_addValues = AS_PERCENTAGE;
+ m_decimalPlaces = optionsForm-&gt;decimalPlacesSpinBox-&gt;value();
+ drawElements();
+ }
+ delete optionsForm;
+}
+
+
+void <a name="f612"></a>ChartForm::helpHelp()
+{
+ <a href="qmainwindow.html#statusBar">statusBar</a>()-&gt;message( "Help is not implemented yet", 2000 );
+}
+
+
+void <a name="f613"></a>ChartForm::helpAbout()
+{
+<a name="x2886"></a> TQMessageBox::<a href="qmessagebox.html#about">about</a>( this, "Chart -- About",
+ "&lt;center&gt;&lt;h1&gt;&lt;font color=blue&gt;Chart&lt;font&gt;&lt;/h1&gt;&lt;/center&gt;"
+ "&lt;p&gt;Chart your data with &lt;i&gt;chart&lt;/i&gt;.&lt;/p&gt;"
+ );
+}
+
+
+void <a name="f614"></a>ChartForm::helpAboutTQt()
+{
+<a name="x2887"></a> TQMessageBox::<a href="qmessagebox.html#aboutTQt">aboutTQt</a>( this, "Chart -- About TQt" );
+}
+
+</pre>
+
+<p> <hr>
+<p> Main:
+<p> <pre>#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
+#include "chartform.h"
+
+
+int main( int argc, char *argv[] )
+{
+ <a href="qapplication.html">TQApplication</a> app( argc, argv );
+
+ <a href="qstring.html">TQString</a> filename;
+<a name="x2900"></a> if ( app.<a href="qapplication.html#argc">argc</a>() &gt; 1 ) {
+<a name="x2901"></a> filename = app.<a href="qapplication.html#argv">argv</a>()[1];
+<a name="x2904"></a> if ( !filename.<a href="qstring.html#endsWith">endsWith</a>( ".cht" ) )
+ filename = TQString::null;
+ }
+
+ ChartForm *cf = new ChartForm( filename );
+ app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( cf );
+ cf-&gt;<a href="qwidget.html#show">show</a>();
+
+ return app.<a href="qapplication.html#exec">exec</a>();
+}
+</pre>
+
+<p> <p>See also <a href="step-by-step-examples.html">Step-by-step Examples</a>.
+
+<!-- eof -->
+<p><address><hr><div align=center>
+<table width=100% cellspacing=0 border=0><tr>
+<td>Copyright &copy; 2007
+<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
+<td align=right><div align=right>TQt 3.3.8</div>
+</table></div></address></body>
+</html>