class ChartForm def load( filename ) file = TQt::File.new( filename ) if !file.open( TQt::IO_ReadOnly ) statusBar().message( "Failed to load \'%s\'" % filename, 2000 ) return end init() # Make sure we have colours @filename = filename ts = TQt::TextStream.new( file ) errors = 0 i = 0 while !ts.eof() element = Element.new ts >> element if element.isValid() @elements[i] = element i += 1 else errors += 1 end if i == MAX_ELEMENTS statusBar().message("Read maximum number of elements (%d) discarding others" % i, 2000 ) break end end file.close() bad = "" if errors > 0 bad = " skipped %d bad record" % errors if errors > 1 bad += "s" end end statusBar().message( "Read %d values from \'%s\'" % [i, filename], 3000 ) setCaption( "Chart -- %s" % filename ) updateRecentFiles( filename ) drawElements() @changed = false end def fileSave() if @filename.nil? fileSaveAs() return end file = TQt::File.new( @filename ) if !file.open( TQt::IO_WriteOnly ) statusBar().message( "Failed to save \'%s\'" % @filename, 2000 ) return end ts = TQt::TextStream.new( file ) for i in 0...MAX_ELEMENTS if @elements[i].isValid() ts << @elements[i] end end file.close() setCaption( "Chart -- %s" % @filename ) statusBar().message( "Saved \'%s\'" % @filename, 2000 ) @changed = false end def fileSaveAsPixmap() filename = TQt::FileDialog.getSaveFileName(nil, "Images (*.png *.xpm *.jpg)", self, "file save as bitmap", "Chart -- File Save As Bitmap" ) if TQt::Pixmap.grabWidget( @canvasView ).save( filename, filename.sub(/.*\.([^.]*)$/, '\1').upcase() ) statusBar().message( "Wrote \'%s\'" % filename, 2000 ) else statusBar().message( "Failed to write \'%s\'" % filename, 2000 ) end end def filePrint() if !@printer @printer = TQt::Printer.new end if @printer.setup() painter = TQt::Painter.new( @printer ) @canvas.drawArea( TQt::Rect.new( 0, 0, @canvas.width(), @canvas.height() ), painter, false ) if !@printer.outputFileName().empty? statusBar().message( "Printed \'%s\'" % @printer.outputFileName(), 2000 ) end end end end