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/chart-chartform_files-cpp.html | 155 ++++++++++++++++++++++++++++++++ 1 file changed, 155 insertions(+) create mode 100644 doc/html/chart-chartform_files-cpp.html (limited to 'doc/html/chart-chartform_files-cpp.html') diff --git a/doc/html/chart-chartform_files-cpp.html b/doc/html/chart-chartform_files-cpp.html new file mode 100644 index 0000000..01dc4cc --- /dev/null +++ b/doc/html/chart-chartform_files-cpp.html @@ -0,0 +1,155 @@ + + + + + +chart/chartform_files.cpp Example File + + + + + + + +

chart/chartform_files.cpp Example File

+ + +

#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 );
+    }
+}
+
+

+ +

Trademarks +

Qt 3.3.8

+ -- cgit v1.2.3