Add Qt3 development HEAD version

1 files changed, 113 insertions, 0 deletions

diff --git a/examples/chart/chartform_files.cpp b/examples/chart/chartform_files.cpp
new file mode 100644
index 0000000..55eefbf
--- /dev/null
+++ b/examples/chart/chartform_files.cpp
@@ -0,0 +1,113 @@
+#include "canvasview.h"
+#include "chartform.h"
+
+#include <qfile.h>
+#include <qfiledialog.h>
+#include <qpainter.h>
+#include <qprinter.h>
+#include <qstatusbar.h>
+
+
+void ChartForm::load( const QString& filename )
+{
+    QFile file( filename );
+    if ( !file.open( IO_ReadOnly ) ) {
+	statusBar()->message( QString( "Failed to load \'%1\'" ).
+				arg( filename ), 2000 );
+	return;
+    }
+
+    init(); // Make sure we have colours
+    m_filename = filename;
+    QTextStream ts( &file );
+    Element element;
+    int errors = 0;
+    int i = 0;
+    while ( !ts.eof() ) {
+	ts >> element;
+	if ( element.isValid() )
+	    m_elements[i++] = element;
+	else
+	    errors++;
+	if ( i == MAX_ELEMENTS ) {
+	    statusBar()->message(
+		QString( "Read maximum number of elements (%1)"
+		         " discarding others" ).arg( i ), 2000 );
+	    break;
+	}
+    }
+
+    file.close();
+
+    QString bad = "";
+    if ( errors ) {
+	bad = QString( "; skipped " ) + QString::number( errors ) + " bad record";
+	if ( errors > 1 )
+	    bad += "s";
+    }
+    statusBar()->message( QString( "Read %1 values from \'%2\'%3" ).
+			  arg( i ).arg( filename ).arg( bad ), 3000 );
+
+    setCaption( QString( "Chart -- %1" ).arg( filename ) );
+    updateRecentFiles( filename );
+
+    drawElements();
+    m_changed = FALSE;
+}
+
+
+void ChartForm::fileSave()
+{
+    if ( m_filename.isEmpty() ) {
+	fileSaveAs();
+	return;
+    }
+
+    QFile file( m_filename );
+    if ( !file.open( IO_WriteOnly ) ) {
+	statusBar()->message( QString( "Failed to save \'%1\'" ).
+				arg( m_filename ), 2000 );
+	return;
+    }
+    QTextStream ts( &file );
+    for ( int i = 0; i < MAX_ELEMENTS; ++i )
+	if ( m_elements[i].isValid() )
+	    ts << m_elements[i];
+
+    file.close();
+
+    setCaption( QString( "Chart -- %1" ).arg( m_filename ) );
+    statusBar()->message( QString( "Saved \'%1\'" ).arg( m_filename ), 2000 );
+    m_changed = FALSE;
+}
+
+
+void ChartForm::fileSaveAsPixmap()
+{
+    QString filename = QFileDialog::getSaveFileName(
+			    QString::null, "Images (*.png *.xpm *.jpg)",
+			    this, "file save as bitmap",
+			    "Chart -- File Save As Bitmap" );
+    if ( QPixmap::grabWidget( m_canvasView ).
+	    save( filename,
+		  filename.mid( filename.findRev( '.' ) + 1 ).upper() ) )
+	statusBar()->message( QString( "Wrote \'%1\'" ).arg( filename ), 2000 );
+    else
+	statusBar()->message( QString( "Failed to write \'%1\'" ).
+				arg( filename ), 2000 );
+}
+
+void ChartForm::filePrint()
+{
+    if ( !m_printer )
+	m_printer = new QPrinter;
+    if ( m_printer->setup() ) {
+	QPainter painter( m_printer );
+	m_canvas->drawArea( QRect( 0, 0, m_canvas->width(), m_canvas->height() ),
+			    &painter, FALSE );
+	if ( !m_printer->outputFileName().isEmpty() )
+	    statusBar()->message( QString( "Printed \'%1\'" ).
+				  arg( m_printer->outputFileName() ), 2000 );
+    }
+}
+