Наследование: IDisposable
Пример #1
0
        public GraphForm(string fileName)
        {
            InitializeComponent();

            _graph = new Graph(fileName);

            /* whenever graph changes, rerender and display the graph */
            _graph.Changed += delegate(object sender, EventArgs e)
            {
            using (Stream stream = _graph.Render("emfplus:gdiplus"))
                graphControl.Image = new Metafile(stream);
            };
            _graph.Arguments["layout"] = "dot";
        }
Пример #2
0
        public GraphForm(string fileName)
        {
            InitializeComponent();

            /* window title is the filename portion */
            Text = Path.GetFileName(fileName);

            /* associated icon is eventually sourced by the desktop from this executable's embedded Win32 resources */
            Icon = Icon.ExtractAssociatedIcon(fileName);

            _graph = new Graph(fileName);

            /* whenever graph changes, rerender and display the graph */
            _graph.Changed += delegate(object sender, EventArgs e)
            {
                RenderGraph();
            };
            _graph.Arguments["layout"] = "dot";

            _watcher = new PathWatcher(fileName);
            _watcher.SynchronizingObject = this;
            _watcher.Changed += delegate(object sender, CancelEventArgs eventArgs)
            {
                try
                {
                    /* replace old graph with new and rerender */
                    Graph newGraph = new Graph(((PathWatcher)sender).Watched);
                        ((IDisposable)_graph).Dispose();
                        _graph = newGraph;
                        _graph.Arguments["layout"] = "dot";
                        RenderGraph();

                        if (Changed != null)
                            Changed(this, EventArgs.Empty);
                    }
                catch (Win32Exception exception)
                {
                    /* if another process is holding on to the graph, try opening again later */
                    if (exception.NativeErrorCode == 32)
                        eventArgs.Cancel = false;
                }
            };
            _watcher.Start();

            /* set up export dialog with initial file and filters from the graph devices */
            StringBuilder exportFilter = new StringBuilder();
            int filterIndex = 0;
            for (int deviceIndex = 0; deviceIndex < _devices.Count; ++deviceIndex)
            {
                if (deviceIndex > 0)
                    exportFilter.Append("|");

                string device = _devices[deviceIndex];
                exportFilter.Append(String.Format("{0} (*.{1})|*.{1}", device.ToUpper(), device));

                if (filterIndex == 0 && device == "emfplus")
                    filterIndex = deviceIndex;
            }
            exportFileDialog.FileName = Path.GetFileNameWithoutExtension(fileName);
            exportFileDialog.Filter = exportFilter.ToString();
            exportFileDialog.FilterIndex = filterIndex + 1;

            printDocument.DocumentName = Path.GetFileName(fileName);
        }
 public GraphArguments(Graph graph)
 {
     _dictionary = new Dictionary <string, string>();
     _graph      = graph;
 }