How to get the dimensions of the area within the window of the scene?
HelloI am able to get the size of a window using stage.getWidth () and stage.getHeight (), which gives the dimensions of the window, including the border. But how the size of the dimensions within the window, which is the area inside the border of the window?
I had created a way to understand this by calculating the difference between the sides of my initial scene and my step. I called this window filling, which is essentially the thickness of the border on the sides and up and down.
This method of calculation for available surface area in a window is not reliable when a window is maximized, because the thickness of the border of the window shrinks when enlarged. And if your stage size is larger than your scene, then you will get a wrong value.
There must be a way to get this area. I need it to do correctly scaling.
Thank you
Jose
Published by: jmart on 22 August 2012 23:58
I did it by adding a 'master' component to the stage
mainScene = new scene (masterPane, 430, 430);
The master component is just a container that contains all the content but will resize the window resize event and therefore will always have the right width and height.
masterPane = new Pane();
masterPane.getChildren () .add (root);
Due to that you can resize your content based on
Double screenWidth = masterPane.getWidth ();
Double screenHeight = masterPane.getHeight ();
Here is an example. You can zoom (scrollwheel), pan (click and drag) and Center + scale on the screen (middle button) (only if the content is a square, there is a bug if the content is greater than the width, which I had no time to eliminate now but you get the point)
import javafx.animation.Animation;
import javafx.animation.ParallelTransition;
import javafx.animation.ParallelTransitionBuilder;
import javafx.animation.RotateTransition;
import javafx.animation.RotateTransitionBuilder;
import javafx.animation.ScaleTransition;
import javafx.animation.ScaleTransitionBuilder;
import javafx.animation.Timeline;
import javafx.animation.TranslateTransition;
import javafx.animation.TranslateTransitionBuilder;
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.geometry.Point2D;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.ScrollEvent;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;
public class Test extends Application
{
Stage primStage;
Scene mainScene;
Group root;
Pane masterPane;
Point2D dragAnchor;
double initX;
double initY;
public static void main(String[] args)
{
launch(args);
}
@Override
public void init()
{
root = new Group();
final Pane pane = new Pane();
pane.setStyle("-fx-background-color: #CCFF99");
pane.setOnScroll(new EventHandler()
{
@Override
public void handle(ScrollEvent se)
{
if(se.getDeltaY() > 0)
{
pane.setScaleX(pane.getScaleX() + pane.getScaleX()/15);
pane.setScaleY(pane.getScaleY() + pane.getScaleY()/15);
}
else
{
pane.setScaleX(pane.getScaleX() - pane.getScaleX()/15);
pane.setScaleY(pane.getScaleY() - pane.getScaleY()/15);
}
}
});
pane.setOnMousePressed(new EventHandler()
{
public void handle(MouseEvent me)
{
initX = pane.getTranslateX();
initY = pane.getTranslateY();
dragAnchor = new Point2D(me.getSceneX(), me.getSceneY());
}
});
pane.setOnMouseDragged(new EventHandler()
{
public void handle(MouseEvent me) {
double dragX = me.getSceneX() - dragAnchor.getX();
double dragY = me.getSceneY() - dragAnchor.getY();
//calculate new position of the pane
double newXPosition = initX + dragX;
double newYPosition = initY + dragY;
//if new position do not exceeds borders of the rectangle, translate to this position
pane.setTranslateX(newXPosition);
pane.setTranslateY(newYPosition);
}
});
int x = 0;
int y = -40;
for(int i = 0; i < 5; i++)
{
y = y + 40;
for (int j = 0; j < 5; j++)
{
final Rectangle rect = new Rectangle(x, y, 30 , 30);
final RotateTransition rotateTransition = RotateTransitionBuilder.create()
.node(rect)
.duration(Duration.seconds(4))
.fromAngle(0)
.toAngle(720)
.cycleCount(Timeline.INDEFINITE)
.autoReverse(true)
.build();
rect.setOnMouseClicked(new EventHandler()
{
public void handle(MouseEvent me)
{
if(rotateTransition.getStatus().equals(Animation.Status.RUNNING))
{
rotateTransition.setToAngle(0);
rotateTransition.stop();
rect.setFill(Color.BLACK);
rect.setScaleX(1.0);
rect.setScaleY(1.0);
}
else
{
rect.setFill(Color.AQUAMARINE);
rect.setScaleX(2.0);
rect.setScaleY(2.0);
rotateTransition.play();
}
}
});
pane.getChildren().add(rect);
x = x + 40;
}
x = 0;
}
pane.autosize();
pane.setPrefSize(pane.getWidth(), pane.getHeight());
pane.setMaxSize(pane.getWidth(), pane.getHeight());
root.getChildren().add(pane);
masterPane = new Pane();
masterPane.getChildren().add(root);
masterPane.setStyle("-fx-background-color: #AABBCC");
masterPane.setOnMousePressed(new EventHandler()
{
public void handle(MouseEvent me)
{
System.out.println(me.getButton());
if((MouseButton.MIDDLE).equals(me.getButton()))
{
double screenWidth = masterPane.getWidth();
double screenHeight = masterPane.getHeight();
double scaleXIs = pane.getScaleX();
double scaleYIs = pane.getScaleY();
double paneWidth = pane.getWidth() * scaleXIs;
double paneHeight = pane.getHeight() * scaleYIs;
double screenScale = (screenWidth < screenHeight) ? screenWidth : screenHeight;
int screenSide = (screenWidth < screenHeight) ? 0 : 1;
double scaleFactor = 0.0;
if(screenSide == 1)
{
scaleFactor = screenScale / paneWidth;
}
else
{
scaleFactor = screenScale / paneHeight;
}
double scaleXTo = scaleXIs * scaleFactor;
double scaleYTo = scaleYIs * scaleFactor;
double moveToX = (screenWidth /2) - (pane.getWidth() / 2);
double moveToY = (screenHeight/2) - (pane.getHeight() / 2);
TranslateTransition transTrans = TranslateTransitionBuilder.create()
.duration(Duration.seconds(2))
.toX(moveToX)
.toY(moveToY)
.build();
ScaleTransition scaleTrans = ScaleTransitionBuilder.create()
.duration(Duration.seconds(2))
.toX(scaleXTo)
.toY(scaleYTo)
.build();
ParallelTransition parallelTransition = ParallelTransitionBuilder.create()
.node(pane)
.children(transTrans,scaleTrans)
.build();
parallelTransition.play();
}
}
});
}
public void start(Stage primaryStage)
{
primStage = primaryStage;
mainScene = new Scene(masterPane, 430, 430);
primaryStage.setScene(mainScene);
primaryStage.show();
}
}
Tags: Java
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