ContentResizerPane.java

/*
 * The MIT License
 *
 * Copyright 2019 brunomnsilva.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package graphvisualizer.containers;

import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.layout.Pane;
import javafx.scene.transform.Scale;

/**
 *
 * @author brunomnsilva
 */
public class ContentResizerPane extends Pane {

    private final Node content;
    private final DoubleProperty resizeFActor = new SimpleDoubleProperty(1);

    public ContentResizerPane(Node content) {
        this.content = content;

        getChildren().add(content);

        Scale scale = new Scale(1.0, 1.0);
        content.getTransforms().add(scale);

        resizeFActor.addListener((ObservableValue<? extends Number> observable, Number oldValue, Number newValue) -> {
            scale.setX(newValue.doubleValue());
            scale.setY(newValue.doubleValue());
            requestLayout();
        });
    }


    @Override
    protected void layoutChildren() {
        Pos pos = Pos.TOP_LEFT;
        double width = getWidth();
        double height = getHeight();
        double top = getInsets().getTop();
        double right = getInsets().getRight();
        double left = getInsets().getLeft();
        double bottom = getInsets().getBottom();
        double contentWidth = (width - left - right) / resizeFActor.get();
        double contentHeight = (height - top - bottom) / resizeFActor.get();
        layoutInArea(content, left, top,
                contentWidth, contentHeight,
                0, null,
                pos.getHpos(),
                pos.getVpos());
    }

    public final Double getResizeFactor() {
        return resizeFActor.get();
    }

    public final void setResizeFactor(Double resizeFactor) {
        this.resizeFActor.set(resizeFactor);
    }

    public final DoubleProperty resizeFactorProperty() {
        return resizeFActor;
    }
}