JavaFX :如何减少其他应用程序的窗口全屏

Question

我的目标是创建一个JavaFX应用程序，就像一个小部件（alwaysOnTop），但它也减少了其他外部应用程序的可用空间。

您可以看到它像一个新的Windows工具栏：如果我以全屏模式打开浏览器，我希望我的"工具栏"在浏览器旁边可见，始终可见，但没有重叠。

此工具栏将采用所有屏幕的高度，并粘在屏幕的左侧或右侧。

1）JavaFX可以做到这一点吗？（或者在JavaFX中集成了一些Swing）

2）我该怎么做？或者我在哪里可以找到一些文档？（其中一个难点是我找不到我想做的事情的关键词，可能是因为我缺乏英语词汇）

3）这是可互操作的吗？（Windows，MacOS，Linux...）

4）还有其他应用程序可以实现此技巧吗？（有人告诉我VLC可以做到这一点，但我没有找到参数）

如果我的描述不清楚，我会编辑晦涩的部分:)

Answer 1

先生;

你：" 此工具栏将采用所有屏幕的高度并粘在屏幕的左侧或右侧"

我：使用Screen类

你：" JavaFX可以吗？（或者在JavaFX中集成了一些Swing）"

我：是的

你：" 我怎么能这样？或者我在哪里可以找到一些文档？（其中一个困难是我找不到我想做的事情的关键词，可能是因为我缺乏英语词汇）"

我：这里代码示例

//create two stages
Stage toolbar = new Stage(), main = new Stage();
//creating a chunk here to fill up our 'main' 
AnchorPane a = new AnchorPane();
WebView wv = new WebView();
Label l = new Label("Loading url");
wv.getEngine().getLoadWorker().stateProperty().addListener(new ChangeListener<State>() {
    @Override
    public void changed(ObservableValue<? extends State> arg0,
                    State arg1, State arg2) {
        if(arg2.equals(State.RUNNING)){
            l.setText("LOADING");
        }else if(arg2.equals(State.SUCCEEDED)){
            l.setText("DONE");
        }
    }
});
wv.getEngine().load("http://stackoverflow.com/users/3894351/elltz");
a.autosize();
a.getChildren().addAll(wv,l);
Scene scene = new Scene(a,500,500); 
main.setScene(scene);
main.show();
//creating a chunk to fill up 'toolbar'
TreeItem<String> treeItemRoot1 = new TreeItem<> ("StackOverflow Users");
TreeItem<String> nodeItemA = new TreeItem<>("Elites");
TreeItem<String> nodeItemB = new TreeItem<>("Rookies");
treeItemRoot1.getChildren().addAll(nodeItemA, nodeItemB);
nodeItemA.setExpanded(true);
nodeItemB.setExpanded(true);
TreeItem<String> nodeItemA1 = new TreeItem<>("Jon Skeet");
TreeItem<String> nodeItemA2 = new TreeItem<>("jwelsea");
TreeItem<String> nodeItemA3 = new TreeItem<>("James D");
nodeItemA.getChildren().addAll(nodeItemA1, nodeItemA2, nodeItemA3);
TreeItem<String> nodeItemB1 = new TreeItem<>("Elltz");
TreeItem<String> nodeItemB2 = new TreeItem<>("Sybb");
nodeItemB.getChildren().addAll(nodeItemB1, nodeItemB2);
TreeView<String> treeView = new TreeView<>(treeItemRoot1);
treeView.setShowRoot(false);
// starting of the toolbar alignments 
toolbar.initModality(Modality.NONE); // with this function, i dont quite recall but all 
//you can say is Modality.NONE, means do not override focus from another window
toolbar.setScene(new Scene(treeView,120,(Screen.getPrimary().getVisualBounds().getHeight()-20)));
// the getPrimary gets the default screen or monitor to your system
//so in short i get the height of it then - n; depends on how your screen & margins kinda stuff
toolbar.setMaxWidth(125); //to prevent excessive re-sizing; you could change to your likeness
toolbar.setMinWidth(120); //to prevent excessive re-sizing; you could change to your likeness
toolbar.setX((Screen.getPrimary().getVisualBounds().getMaxX()-130));
// this function above positions your scene at the (widith_of_entire_
//screen - the size of the stage which is toolbar - 10); so with this my
// calculations it will be set perfectly at the right side. the 10 has here
// stands for margins or stuff like that. but if you want the left side,
// you just use the line Screen.getPrimary().getVisualBounds().getMinX();
// you do not need to subtract because you start counting from 0 on your left
toolbar.setY((Screen.getPrimary().getVisualBounds().getMinY()));
// this function above positions the stage vertically, it starts counting
// from 0 at the top, if you wanted to position it somewhere at the bottom
// then you do the minus(-) things
toolbar.show();
new Thread(new Runnable() {
    @Override
    public void run() {
        while(true){
            try {
                Thread.sleep(100); //buy little millieseconds
            } catch (InterruptedException e) {}
            Platform.runLater(()->{
                toolbar.toFront();
                //bring your UI on top of everyone
            });
        }
    }
}).start();

希望这是你想要的...