From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 10 Jul 2011 15:24:15 -0500 Subject: Add Qt3 development HEAD version --- doc/html/simple-font-demo-example.html | 273 +++++++++++++++++++++++++++++++++ 1 file changed, 273 insertions(+) create mode 100644 doc/html/simple-font-demo-example.html (limited to 'doc/html/simple-font-demo-example.html') diff --git a/doc/html/simple-font-demo-example.html b/doc/html/simple-font-demo-example.html new file mode 100644 index 0000000..3d15ce6 --- /dev/null +++ b/doc/html/simple-font-demo-example.html @@ -0,0 +1,273 @@ + + + + + +A simple demonstration of QFont member functions + + + + + + + +

A simple demonstration of QFont member functions

+ + +

This example demonstrates the use of various +QFont member functions. +

The main window API (viewer.h): +

/* $Id: qt/viewer.h   3.3.8   edited May 27 2003 $ */
+
+#ifndef VIEWER_H
+#define VIEWER_H
+
+
+#include <qwidget.h>
+#include <qfont.h>
+
+class QTextView;
+class QPushButton;
+
+class Viewer : public QWidget
+{
+Q_OBJECT
+
+public:
+    Viewer();
+
+private slots:
+    void setDefault();
+    void setSansSerif();
+    void setItalics();
+
+private:
+    void setFontSubstitutions();
+    void layout();
+    void showFontInfo( QFont & );
+
+    QTextView * greetings;
+    QTextView * fontInfo;
+
+    QPushButton * defaultButton;
+    QPushButton * sansSerifButton;
+    QPushButton * italicsButton;
+};
+
+#endif
+

+ +

The main window implementation (viewer.cpp): +

/* $Id: qt/viewer.cpp   3.3.8   edited May 27 2003 $ */
+
+#include "viewer.h"
+#include <qstring.h>
+#include <qstringlist.h>
+#include <qtextview.h>
+#include <qpushbutton.h>
+#include <qlayout.h>
+
+Viewer::Viewer()
+       :QWidget()
+{
+    setFontSubstitutions();
+
+    QString greeting_heb = QString::fromUtf8( "\327\251\327\234\327\225\327\235" );
+    QString greeting_ru = QString::fromUtf8( "\320\227\320\264\321\200\320\260\320\262\321\201\321\202\320\262\321\203\320\271\321\202\320\265" );
+    QString greeting_en( "Hello" );
+
+    greetings = new QTextView( this, "textview" );
+
+    greetings->setText( greeting_en + "\n" +
+                       greeting_ru + "\n" +
+                       greeting_heb );
+
+    fontInfo = new QTextView( this, "fontinfo" );
+
+    setDefault();
+
+    defaultButton = new QPushButton( "Default", this,
+                                                   "pushbutton1" );
+    defaultButton->setFont( QFont( "times" ) );
+    connect( defaultButton, SIGNAL( clicked() ),
+             this, SLOT( setDefault() ) );
+
+    sansSerifButton = new QPushButton( "Sans Serif", this,
+                                                     "pushbutton2" );
+    sansSerifButton->setFont( QFont( "Helvetica", 12 ) );
+    connect( sansSerifButton, SIGNAL( clicked() ),
+             this, SLOT( setSansSerif() ) );
+
+    italicsButton = new QPushButton( "Italics", this,
+                                                   "pushbutton3" );
+    italicsButton->setFont( QFont( "lucida", 12, QFont::Bold, TRUE ) );
+    connect( italicsButton, SIGNAL( clicked() ),
+             this, SLOT( setItalics() ) );
+
+    layout();
+}
+
+void Viewer::setDefault()
+{
+    QFont font( "Bavaria" );
+    font.setPointSize( 24 );
+
+    font.setWeight( QFont::Bold );
+    font.setUnderline( TRUE );
+
+    greetings->setFont( font );
+
+    showFontInfo( font );
+}
+
+void Viewer::setSansSerif()
+{
+    QFont font( "Newyork", 18 );
+    font.setStyleHint( QFont::SansSerif );
+    greetings->setFont( font );
+
+    showFontInfo( font );
+}
+
+void Viewer::setItalics()
+{
+    QFont font( "Tokyo" );
+    font.setPointSize( 32 );
+    font.setWeight( QFont::Bold );
+    font.setItalic( TRUE );
+
+    greetings->setFont( font );
+
+    showFontInfo( font );
+}
+
+void Viewer::showFontInfo( QFont & font )
+{
+    QFontInfo info( font );
+
+    QString messageText;
+    messageText = "Font requested: \"" +
+                  font.family() + "\" " +
+                  QString::number( font.pointSize() ) + "pt<BR>" +
+                  "Font used: \"" +
+                  info.family() + "\" " +
+                  QString::number( info.pointSize() ) + "pt<P>";
+
+    QStringList substitutions = QFont::substitutes( font.family() );
+
+    if ( ! substitutions.isEmpty() ){
+        messageText += "The following substitutions exist for " + \
+                       font.family() + ":<UL>";
+
+        QStringList::Iterator i = substitutions.begin();
+        while ( i != substitutions.end() ){
+            messageText += "<LI>\"" + (* i) + "\"";
+            i++;
+        }
+         messageText += "</UL>";
+    } else {
+        messageText += "No substitutions exist for " + \
+                       font.family() + ".";
+    }
+
+    fontInfo->setText( messageText );
+}
+
+void Viewer::setFontSubstitutions()
+{
+    QStringList substitutes;
+    substitutes.append( "Times" );
+    substitutes +=  "Mincho",
+    substitutes << "Arabic Newspaper" << "crox";
+
+    QFont::insertSubstitutions( "Bavaria", substitutes );
+
+    QFont::insertSubstitution( "Tokyo", "Lucida" );
+}
+
+
+// For those who prefer to use Qt Designer for creating GUIs
+// the following function might not be of particular interest:
+// all it does is creating the widget layout.
+
+void Viewer::layout()
+{
+    QHBoxLayout * textViewContainer = new QHBoxLayout();
+    textViewContainer->addWidget( greetings );
+    textViewContainer->addWidget( fontInfo );
+
+    QHBoxLayout * buttonContainer = new QHBoxLayout();
+
+    buttonContainer->addWidget( defaultButton );
+    buttonContainer->addWidget( sansSerifButton );
+    buttonContainer->addWidget( italicsButton );
+
+    int maxButtonHeight = defaultButton->height();
+
+    if ( sansSerifButton->height() > maxButtonHeight )
+        maxButtonHeight = sansSerifButton->height();
+    if ( italicsButton->height() > maxButtonHeight )
+        maxButtonHeight = italicsButton->height();
+
+    defaultButton->setFixedHeight( maxButtonHeight );
+    sansSerifButton->setFixedHeight( maxButtonHeight );
+    italicsButton->setFixedHeight( maxButtonHeight );
+
+    QVBoxLayout * container = new QVBoxLayout( this );
+    container->addLayout( textViewContainer );
+    container->addLayout( buttonContainer );
+
+    resize( 700, 250 );
+}
+

+ +

main() program (simple-qfont-demo.cpp): +

/* $Id: qt/simple-qfont-demo.cpp   3.3.8   edited May 27 2003 $ */
+
+#include "viewer.h"
+
+#include <qapplication.h>
+
+int main( int argc, char **argv )
+{
+    QApplication app( argc, argv );
+    Viewer * textViewer = new Viewer();
+    textViewer->setCaption( "Qt Example - Simple QFont Demo" );
+    app.setMainWidget( textViewer );
+    textViewer->show();
+    return app.exec();
+}
+

+ +