eclipse插件(gef)和图形可视化(zest)

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问题描述

我正在编写一个绘制有限状态系统的eclipse插件.由于它可能很大，因此我想附加一些现有的图形布局算法(例如，层次布局，基于力的布局等)，以自动优化系统可视化效果.

i'm writing an eclipse plugin that draws a finite state system. since it may be large, i'd like to attach some existing graph layout algorithm (e.g. hierarchical layout, force-based layout, ...) that automatically optimize the system visualization.

是否有一种方法可以集成我正在编写的插件(使用GEF编写)，以便可以按照某些常见的图形布局算法将生成的编辑部分放置在编辑器区域中?

is there a way to integrate the plugin i'm writing (written using GEF) so that generated edit parts could be place on the editor area following some of the common graph layout algorithms?

我找到了有趣的文章，但是没有优化编辑零件可视化，它着重于绘制一个全新的图形.

i've found this interesting article but instead of optimizing edit parts visualization, it focuses on drawing a completely new graph.

到目前为止，我正在做的是添加以下代码(基于Zest 1)

so far what I'm doing is adding the following code (based on Zest 1)

private static void createNewGraph(String autName) {
    Shell tmpShell = new Shell();
    currGraph = new Graph(tmpShell, SWT.NONE);
    mapStateAndNodes = new HashMap<State, GraphNode>();
}

private static void addGraphNode(State currState)
{
    GraphNode newNode = new GraphNode(currGraph, SWT.NONE, currState.getName());
    mapStateAndNodes.put(currState, newNode);
}

private static void addGraphConnection(Transition currTrans)
{
    GraphNode source = mapStateAndNodes.get(currTrans.getOrigState());
    GraphNode dest = mapStateAndNodes.get(currTrans.getDestState());

    GraphConnection newConn = new GraphConnection(currGraph, SWT.NONE, source, dest);

}

private static void completeGraph()
{
    currGraph.setLayoutAlgorithm(new SpringLayoutAlgorithm(LayoutStyles.NO_LAYOUT_NODE_RESIZING), true);
}

在构建模型时，我还调用了createNewGraph(...)，addGraphNode(...)，addGraphConnection(...)和completeGraph(...).问题是:在currGraph.setLayoutAlgorithm(..., true)之后，true表示应应用算法并将对象按正确"的顺序放置.此时(如某些读者所建议)，可以通过GraphNode.getLocation()方法提取计算出的坐标.不幸的是，在设置布局并应用它之后，所有状态都将Point(0,0)作为其位置.我也发现了这个评论:

and while building my model, I also call createNewGraph(...), addGraphNode(...), addGraphConnection(...) and completeGraph(...). the problem is: after currGraph.setLayoutAlgorithm(..., true) that true means it should apply the algorithm and place the objects in the "right" order. at this point (as suggested from some reader), it is possible to extract the computed coordinates through a GraphNode.getLocation() method. unfortunately after setting a layout and applying it, all the states have Point(0,0) as their location. i also found this comment:

/**
 * Runs the layout on this graph. It uses the reveal listener to run the
 * layout only if the view is visible. Otherwise it will be deferred until
 * after the view is available.
 */
 public void applyLayout() {
     ...
 }

在org.eclipse.zest.core.widgets.Graph来源中的

:-[对我来说，我似乎无法使用zest图形库来完成这项工作.我错了吗?有其他选择吗?

in org.eclipse.zest.core.widgets.Graph sources :-[ to me it seems i cannot use zest Graph library to do this job. am i wrong? are there any alternatives?

任何帮助将不胜感激:)

any help would be appreciated :)

zest

eclipse插件(gef)和图形可视化(zest)

问题描述

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