How can I create a floating search box for macOS using Swift like Spotlight and Alfred?
We can use ScalaFX for this purpose
object Main extends JFXApp {
val resource = getClass.getResource("/box.fxml")
val root = FXMLView(resource, new GuiceDependencyResolver())
stage = new PrimaryStage() {
initStyle(StageStyle.Undecorated) // this option removes the default header
title = "Cats"
scene = new Scene(root)
}
}
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I would like to change the size of my window application. I am using scene builder for this project. In the preview, the size of my fxml is the size that I want. However, when I try to run it with my windows it will show the application in a slightly small size. My question is how can I make the window application size the same as the size of the preview. In another word, I want to make my window application to the exact size that I want. Below attach my code.
import scalafx.application.JFXApp
import scalafx.application.JFXApp.PrimaryStage
import scalafx.scene.Scene
import scalafx.Includes._
import scalafxml.core.{NoDependencyResolver, FXMLView, FXMLLoader}
import javafx.{scene => jfxs}
import scalafx.scene.image.Image
object MainApp extends JFXApp {
// transform path of RootLayout.fxml to URI for resource location.
val rootResource = getClass.getResource("view/RootLayout.fxml")
// initialize the loader object.
val loader = new FXMLLoader(rootResource, NoDependencyResolver)
// Load root layout from fxml file.
loader.load();
// retrieve the root component BorderPane from the FXML
val roots = loader.getRoot[jfxs.layout.BorderPane]
// initialize stage
stage = new PrimaryStage {
title = "TalkShow"
scene = new Scene {
root = roots
}
}
// actions for display person overview window
def showTalkOverview() = {
val resource = getClass.getResource("view/TalkShow.fxml")
val loader = new FXMLLoader(resource, NoDependencyResolver)
loader.load();
val roots = loader.getRoot[jfxs.layout.AnchorPane]
this.roots.setCenter(roots)
}
def showWelcome() = {
val resource = getClass.getResource("view/Welcome.fxml")
val loader = new FXMLLoader(resource, NoDependencyResolver)
loader.load();
val roots = loader.getRoot[jfxs.layout.AnchorPane]
this.roots.setCenter(roots)
}
// call to display PersonOverview when app start
showWelcome()
}
I'm trying to use Amazon Rekognition to draw boxes around detected text in an image.
Here's a stripped-down JavaFX app that is supposed to do that:
object TextRekognizeGui extends JFXApp {
lazy val rekognition: Option[AmazonRekognition] =
RekogClient.get(config.AwsConfig.rekogEndpoint, config.AwsConfig.region)
private val config = MainConfig.loadConfig()
stage = new PrimaryStage {
scene = new Scene {
var imgFile: Option[File] = None
content = new HBox {
val imgFile: ObjectProperty[Option[File]] = ObjectProperty(None)
val img: ObjectProperty[Option[Image]] = ObjectProperty(None)
val lines: ObjectProperty[Seq[TextDetection]] = ObjectProperty(Seq.empty)
// These two print statements are always executed when we press the appropriate button.
img.onChange((_, _, newValue) => println("New image"))
lines.onChange((_, _, newValue) => println(s"${newValue.length} new text detections"))
children = Seq(
new VBox {
children = Seq(
new OpenButton(img, imgFile, lines, stage),
new RekogButton(img, imgFile, lines, rekognition)
)
},
new ResultPane(675, 425, img, lines))
}
}
}
stage.show
}
class ResultPane(width: Double, height: Double, img: ObjectProperty[Option[Image]],
textDetections: ObjectProperty[Seq[TextDetection]]) extends AnchorPane { private val emptyPane: Node = Rectangle(0, 0, width, height)
// This print statement, and the one below, are often not executed even when their dependencies change.
private val backdrop = Bindings.createObjectBinding[Node](
() => {println("new backdrop"); img.value.map(new MainImageView(_)).getOrElse(emptyPane)},
img
)
private val outlines = Bindings.createObjectBinding[Seq[Node]](
() => {println("new outlines"); textDetections.value map getTextOutline},
textDetections
)
This looks to me as though I followed the ScalaFX documentation's directions for creating a custom binding. When I click my "RekogButton", I expect to see the message " new text detections" along with the message "new outlines", but more often than not I see only the " new text detections" message.
The behavior appears to be the same throughout the lifetime of the program, but it only manifests on some runs. The same problem happens with the img -> background binding, but it manifests less often.
Why do my properties sometimes fail to call the bindings when they change?
edit 1
JavaFX stores the listeners associated with bindings as a weak reference, meaning they can still be garbage-collected unless another object holds a strong or soft reference to them. So it seems my app fails if the garbage collector happens to run between app initialization and the time the outlines are drawn.
This is odd, because I seem to have a strong reference to the binding -- the "delegate" field of the value "outlines" in the result pane. Looking into it more.
I have a main window with some information. I can't start the Alert by timer. I need to show alert every 10 seconds(with working main window) and by the alert's button change the Label's text in the main window.
I have this code, but it's not work:
object main extends JFXApp {
stage = new JFXApp.PrimaryStage() {
scene = new Scene {
val MyLabel = new Label("SomeText")
root = new VBox {
children = MyLabel
}
}
val ButtonTypeOne = new ButtonType("Change the text")
val ButtonTypeTwo = new ButtonType("No")
val alert1 = new Alert(AlertType.Warning) {
initOwner(stage)
title = "Warning!!!"
headerText = "Header"
contentText = "Do you need to change the text?"
buttonTypes = Seq(ButtonTypeOne, ButtonTypeTwo, ButtonType.Cancel)
}
val result = alert1.showAndWait()
val timerA = new PauseTransition(Duration(5000))
timerA.onFinished = { _ =>
result match {
case Some(ButtonTypeOne) => /*Here I need to change text in MyLabel */
case Some(ButtonTypeTwo) => None
case _ => None
}
timerA.playFromStart()
}
timerA.play
}
}
There are a few different problems in your code:
You display the alert only once, regardless of what's happening with the timer.
The code that reacts to the result of the alert in the timer always looks at the same initial result.
Unfortunately, even if you move the val result = alert1.showAndWait inside of the timer's animation update event, JavaFX makes it illegal to call showAndWait within such a routine.
The solution is to create an onHidden event handler for alert1, which reacts to it being closed. The button type used to close the dialog is then stored in alert1.result, so you can use that to determine what action to take.
I've added a StringProperty to assist with the changing of the label value. The following example should be a good starting point for what you want to achieve...
import scalafx.Includes._
import scalafx.animation.PauseTransition
import scalafx.application.JFXApp
import scalafx.application.JFXApp.PrimaryStage
import scalafx.beans.property.StringProperty
import scalafx.scene.Scene
import scalafx.scene.layout.VBox
import scalafx.scene.control.{Alert, ButtonType, Label}
import scalafx.scene.control.Alert.AlertType
import scalafx.util.Duration
object main extends JFXApp {
// String property for the text in myLabel.
val strProp = StringProperty("Some Text")
// Declare this so that it's accessible from timerA.onFinished.
val myLabel = new Label {
// Bind the text property to the value of strProp.
// When strProp's value changes, so does the label's text.
text <== strProp
}
stage = new PrimaryStage() {
scene = new Scene {
root = new VBox {
children = myLabel
}
}
}
// Custom buttons.
val ButtonTypeOne = new ButtonType("Change the text")
val ButtonTypeTwo = new ButtonType("No")
// Create the timer. This goes off after 5,000ms (5 seconds) - after play is called.
val timerA = new PauseTransition(Duration(5000))
// Alert dialog.
// Note: JavaFX forbids use of showAndWait within animation processing, so we must use
// an onHidden event instead.
val alert1 = new Alert(AlertType.Warning) {
initOwner(stage)
title = "Warning!!!"
headerText = "Header"
contentText = "Do you need to change the text?"
buttonTypes = Seq(ButtonTypeOne, ButtonTypeTwo, ButtonType.Cancel)
}
// React to the dialog being closed.
alert1.onHidden = {_ =>
alert1.result.value match {
// If button type one, change the property value.
// Note alert1.result.value is a JavaFX ButtonType, so use .delegate for the match.
case ButtonTypeOne.delegate => strProp.value = "Changed!"
// Otherwise, do nothing.
case _ =>
}
// Start the timer once more.
// This is going to be a very annoying app! ;-)
timerA.playFromStart()
}
// When the timer goes off, show the alert.
timerA.onFinished = {_ =>
alert1.show()
}
// Start the timer for the first time.
timerA.play
}
I am trying to understand the message passing possibilities of ScalaFX in combination with ScalaFXML. I created a small example, which has two views with controllers defined in the FXML. The first (or Main) view, is supposed to send a String to the second (or Dialog) view, by a button press.
I followed the example of the ScalaFXML Github page and used a trait in order to get the controller and it's possible for me to call a method on the Dialog controller, which sets a field to different value. This method gets called correctly, but the field isn't overwritten, when I check by clicking a button. Does this have something to do with ScalaFXML injecting the Controller?
Bellow I have the code for the two controllers
#sfxml
class MainController(val clicky: Button,
val inputText: TextField,
val resultText: TextArea) {
/** Creates a new window (in addition to the main window) and passes the contents of the text view to this window */
def onButtonPressed(): Unit = {
// Create the new window
val dialogFXML: String = "/Dialog.fxml"
val resource = getClass.getResource(dialogFXML)
val rootView = FXMLView(resource, NoDependencyResolver)
val loader = new FXMLLoader(resource, NoDependencyResolver)
loader.load()
val controller = loader.getController[AmountReceiver]
controller.setAmount(inputText.text.value)
val dialog = new Stage() {
title = "Add Person"
scene = new Scene(rootView)
resizable = false
initModality(Modality.ApplicationModal)
}
if (!dialog.showing()) {
dialog.show()
} else {
dialog.requestFocus()
}
}
}
and
#sfxml
class DialogController(val minAmountOfWords: Label,
val sendToMainButton: Button,
val input: TextArea) extends AmountReceiver {
var amount: String = "empty"
def submitText(): Unit = {
println(s"The actual amount is ${this.amount}")
// Close Dialog
quitDialog()
}
override def setAmount(amount: String): Unit = {
this.amount = amount
println(s"Setting the amount to ${this.amount}")
}
def quitDialog(): Unit = {
val stage: Stage = input.getScene.getWindow.asInstanceOf[Stage]
stage.close()
}
}
Running this code and entering "2" in the textfield, will print the following output:
Setting the amount to 2
The actual amount is empty
I actually figured it out myself. The problem lays within the rootView, which is received by creating a new FXMLView. In order access the correct controller, the rootView has to be received by the loader, which is already used to get the controller.
So calling
val rootView = loader.getRoot[jfxs.Parent]
instead of
val rootView = FXMLView(resource, NoDependencyResolver)
Like in the above example, the rootView is passed to the Scene constructor.
I am developing an RCP application, I wanted to set the status line. I figured out that I can extend the ActionBarAdvisor class and by overriding the method fillStatusLine() method I can set the status.
private StatusLineContributionItem statusItem;
#Override
protected void fillStatusLine(IStatusLineManager statusLine) {
statusItem = new StatusLineContributionItem("LoggedInStatus");
statusItem.setText("Logged in");
statusLine.add(statusItem);
}
Now, I wish to set image along with it. Is is possible to add image to status line?
You need to override fill(Composite parent) method in your StatusLineContributionItem. There you can add custom components (images, buttons etc. to a status line). For example: http://book.javanb.com/eclipse-rich-client-platform-designing-coding-and-packaging-java-applications-oct-2005/ch17lev1sec7.html
org.eclipsercp.hyperbola/StatusLineContribution
public void fill(Composite parent) {
Label separator = new Label(parent, SWT.SEPARATOR);
label = new CLabel(parent, SWT.SHADOW_NONE);
GC gc = new GC(parent);
gc.setFont(parent.getFont());
FontMetrics fm = gc.getFontMetrics();
Point extent = gc.textExtent(text);
if (widthHint > 0)
widthHint = fm.getAverageCharWidth() * widthHint;
else
widthHint = extent.x;
heightHint = fm.getHeight();
gc.dispose();
StatusLineLayoutData statusLineLayoutData = new StatusLineLayoutData();
statusLineLayoutData.widthHint = widthHint;
statusLineLayoutData.heightHint = heightHint;
label.setLayoutData(statusLineLayoutData);
label.setText(text);
label.setImage(image);
...
}
You chould use the following class: org.eclipse.ui.texteditor.StatusLineContributionItem.class this contains the method setImage(Image image).
It is found in: plugins/org.eclipse.ui.workbench.texteditor_(version).jar of your eclipse installation.
This is class extends: org.eclipse.jface.action.StatusLineContributionItem.class.
Note there are 2 classes named: StatusLineContributionItem.class the other resides in: plugins/org.eclipse.jface_(version).jar and is named: org.eclipse.jface.action.StatusLineContributionItem.class.
This one however does not contain the setImage(Image image) method.
You can then call:
StatusLineManager statusLine = new StatusLineManager();
StatusLineContributionItem i = new StatusLineContributionItem("myid");
i.setText("myText");
i.setImage(SWTResourceManager.getImage(MyClass.class, "config.gif");
...
statusLine.add(i);
...
return statusLine;
If you want complete customization you can use the solution above overriding the fill(Composite composite) method.
Reference:
http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fapi%2Forg%2Feclipse%2Fui%2Ftexteditor%2FStatusLineContributionItem.html