是否可以在javafx中使用透明的实用程序阶段？ [英] Is it possible to have a transparent utility stage in javafx?
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问题描述
我知道您可以设置一个阶段，以具有实用程序样式Stage.InitStyle（StageStyle.UTILITY）;并且您可以将其设置为具有透明样式Stage.InitStyle（StageStyle.TRANSPARENT）;但你能同时在同一个舞台吗？我很累，因为舞台不会在开始菜单中显示为窗口，我希望舞台不可见，这样你才能看到场景。
I know that you can set a stage to have a utility style "Stage.InitStyle(StageStyle.UTILITY);" and you can set it to have a transparent style "Stage.InitStyle(StageStyle.TRANSPARENT);" but can you have both in the same stage? I am tiring to make it so that the stage does not show as a window down in the start menu and I would like the stage to be invisible so that you can only see the scene.
推荐答案
您始终可以使用Swing以旧方式执行该功能。 Swing允许您嵌入JavaFX。当然最好有一个没有Swing的干净机制，但afaik它不存在（还）。
You can always do it the old way using Swing where that feature was available. And Swing allows you to embed JavaFX. Of course it would be preferred to have a clean mechanism without Swing, but afaik it doesn't exist (yet).
示例：
import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Label;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.Background;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.RadialGradient;
import javafx.scene.paint.Stop;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import java.awt.geom.GeneralPath;
public class Widget extends JFrame {
class DragContext {
double x;
double y;
}
public Widget() {
// decoration
setType(Type.UTILITY);
setUndecorated(true);
setSize(200, 200);
toBack();
// position
// setLocation(100, 100);
setLocationRelativeTo(null); // centers on screen
// frame operations
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// frame shape (a star)
double points[][] = { { 0, 85 }, { 75, 75 }, { 100, 10 }, { 125, 75 }, { 200, 85 }, { 150, 125 }, { 160, 190 }, { 100, 150 }, { 40, 190 }, { 50, 125 }, { 0, 85 } };
GeneralPath star = new GeneralPath();
star.moveTo(points[0][0], points[0][1]);
for (int k = 1; k < points.length; k++)
star.lineTo(points[k][0], points[k][2]);
star.closePath();
setShape(star);
// embed fx into swing
JFXPanel fxPanel = new JFXPanel();
Widget.this.getContentPane().add(fxPanel);
Platform.runLater(new Runnable() {
@Override
public void run() {
// set scene in JFXPanel
fxPanel.setScene( createFxScene());
// show frame
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
Widget.this.setVisible(true);
// send it to the desktop, behind all other existing windows
// Widget.this.toBack();
// Widget.this.repaint();
}
});
}
});
}
private Scene createFxScene() {
StackPane rootPane = new StackPane();
rootPane.setBackground(Background.EMPTY);
// add some node
Label label = new Label("Bright & Shiny");
label.setTextFill(Color.RED);
rootPane.getChildren().add(label);
// create scene
Scene scene = new Scene(rootPane);
// gradient fill
RadialGradient radialGradient = new RadialGradient( 270, 0.8, 0.5, 0.5, 0.7, true, CycleMethod.NO_CYCLE, new Stop( .5f, Color.YELLOW), new Stop( .7f, Color.ORANGE), new Stop( .9f, Color.ORANGERED));
scene.setFill(radialGradient);
// context menu with close button
ContextMenu contextMenu = new ContextMenu();
MenuItem closeMenuItem = new MenuItem("Close");
closeMenuItem.setOnAction(actionEvent -> System.exit(0));
contextMenu.getItems().add(closeMenuItem);
// set context menu for scene
scene.setOnMousePressed(mouseEvent -> {
if (mouseEvent.isSecondaryButtonDown()) {
contextMenu.show(rootPane, mouseEvent.getScreenX(), mouseEvent.getScreenY());
}
});
// allow the frame to be dragged around
final DragContext dragDelta = new DragContext();
rootPane.setOnMousePressed(mouseEvent -> {
dragDelta.x = Widget.this.getLocation().getX() - mouseEvent.getScreenX();
dragDelta.y = Widget.this.getLocation().getY() - mouseEvent.getScreenY();
});
rootPane.setOnMouseDragged(mouseEvent -> Widget.this.setLocation((int) (mouseEvent.getScreenX() + dragDelta.x), (int) (mouseEvent.getScreenY() + dragDelta.y)));
return scene;
}
public static void main(String[] args) {
new Widget();
}
}
以下是小部件的屏幕截图没有出现在任务栏中。用鼠标左键拖动它。鼠标右键提供了一个带关闭按钮的上下文菜单。
Here's a screenshot of the widget that's not showing up in the task bar. Drag it with the left mouse button. Right mouse button offers a context menu with a close button.
上面的代码使用了swing框架的形状。下面的代码使用javafx控件的形状。
这是一个只有控件可见的版本。我使用反射标签控件。
Here's a version in which only the control is visible. I use a reflecting label control.
如果要将控件直接发送到桌面，则需要激活toBack（）调用。您可以使用鼠标滚轮缩放控件。最大缩放大小限制为jframe的大小。
If you want to send the control directly to the desktop, you need to activate the toBack() invocation. You can zoom the control with the mouse wheel. The maximum zoom size is limited to the size of the jframe.
您需要为自定义控件执行的所有操作都是在createFxControl（）中实现代码
All you need to do for your custom control is implement the code in createFxControl()
import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Control;
import javafx.scene.control.Label;
import javafx.scene.control.MenuItem;
import javafx.scene.effect.Reflection;
import javafx.scene.input.ScrollEvent;
import javafx.scene.layout.Background;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class LabelWidget extends JFrame {
class DragContext {
double x;
double y;
}
public LabelWidget() {
// decoration
setType(Type.UTILITY);
setUndecorated(true);
// make frame transparent, we only want the control to be visible
setBackground(new java.awt.Color(0,0,0,0));
setSize(400, 400);
// position
// setLocation(100, 100);
setLocationRelativeTo(null); // centers on screen
// frame operations
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// embed fx into swing
JFXPanel fxPanel = new JFXPanel();
LabelWidget.this.getContentPane().add(fxPanel);
Platform.runLater(new Runnable() {
@Override
public void run() {
// set scene in JFXPanel
fxPanel.setScene( createFxScene());
// show frame
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
LabelWidget.this.setVisible(true);
// send it to the desktop, behind all other existing windows
// ClockWidget.this.toBack();
// ClockWidget.this.repaint();
}
});
}
});
}
private Scene createFxScene() {
StackPane rootPane = new StackPane();
// make pane transparent, we only want the control to be visible
rootPane.setBackground(Background.EMPTY);
// add control
Control control = createFxControl();
rootPane.getChildren().add( control);
// create scene
Scene scene = new Scene(rootPane);
// make scene transparent, we only want the control to be visible
scene.setFill( Color.TRANSPARENT);
// context menu with close button
ContextMenu contextMenu = new ContextMenu();
MenuItem closeMenuItem = new MenuItem("Close");
closeMenuItem.setOnAction(actionEvent -> System.exit(0));
contextMenu.getItems().add(closeMenuItem);
control.setContextMenu(contextMenu);
// allow the frame to be dragged around
makeDraggable( control);
// allow zooming
makeZoomable( control);
return scene;
}
/**
* Create the JavaFX control of which we use the shape.
* @return
*/
private Control createFxControl() {
Label label = new Label( "I'm a Label");
label.setFont(new Font("Tahoma", 24));
label.setEffect(new Reflection());
return label;
}
/**
* Allow dragging of the stage / control on the desktop
* @param control
* @param stage
*/
public void makeDraggable( Control control) {
final DragContext dragDelta = new DragContext();
control.setOnMousePressed(mouseEvent -> {
dragDelta.x = LabelWidget.this.getLocation().getX() - mouseEvent.getScreenX();
dragDelta.y = LabelWidget.this.getLocation().getY() - mouseEvent.getScreenY();
});
control.setOnMouseDragged(mouseEvent -> LabelWidget.this.setLocation((int) (mouseEvent.getScreenX() + dragDelta.x), (int) (mouseEvent.getScreenY() + dragDelta.y)));
}
/**
* Allow zooming
* @param control
*/
public void makeZoomable( Control control) {
// note: in order to make it larger, we'd have to resize the stage/frame => we limit the size to 1.0 for now and allow only making the control smaller
final double MAX_SCALE = 1.0;
final double MIN_SCALE = 0.1;
control.addEventFilter(ScrollEvent.ANY, new EventHandler<ScrollEvent>() {
@Override
public void handle(ScrollEvent event) {
double delta = 1.2;
double scale = control.getScaleX();
if (event.getDeltaY() < 0) {
scale /= delta;
} else {
scale *= delta;
}
scale = clamp(scale, MIN_SCALE, MAX_SCALE);
control.setScaleX(scale);
control.setScaleY(scale);
event.consume();
}
});
}
/**
* Limit bounds of value
* @param value
* @param min
* @param max
* @return
*/
public static double clamp( double value, double min, double max) {
if( Double.compare(value, min) < 0)
return min;
if( Double.compare(value, max) > 0)
return max;
return value;
}
public static void main(String[] args) {
new LabelWidget();
}
}
或者如果你有很棒的Enzo来自 https://github.com/HanSolo/Enzo 的图书馆，您可以使用以下代码：
Or if you have the awesome Enzo library from https://github.com/HanSolo/Enzo at hand, you can use this code:
private Control createFxControl() {
// create a clock using the enzo library from https://github.com/HanSolo/Enzo
Clock clock = ClockBuilder.create()
// .prefSize(400, 400)
.design(Clock.Design.DB)
.running(true)
.text("Berlin")
.autoNightMode(true)
.build();
return clock;
}
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