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Scenic View is a JavaFX application designed to make it simple to understand the current state of your application scenegraph, and to also easily manipulate properties of the scenegraph without having to keep editing your code. This lets you find bugs, and get things pixel perfect without having to do the compile-check-compile dance.

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/*
 * Scenic View, 
 * Copyright (C) 2012 Jonathan Giles, Ander Ruiz, Amy Fowler 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.scenicview.view.tabs.details;

import static org.scenicview.view.DisplayUtils.DFMT;
import javafx.geometry.*;
import javafx.scene.layout.Region;
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.scene.text.Text;

/**
 * 
 */
public class InsetsDisplay extends Region {
    private static double THICKNESS = 18;

    private Insets insets;
    private final Rectangle outsideRect;
    // private Rectangle insideRect;
    private final Text topText;
    private final Text leftText;
    private final Text bottomText;
    private final Text rightText;

    public InsetsDisplay() {
        getStyleClass().add("insets-display");

        outsideRect = new Rectangle();
        outsideRect.setFill(null);
        outsideRect.setStroke(Color.rgb(240, 240, 240));
        outsideRect.setStrokeWidth(THICKNESS);
        outsideRect.setStrokeType(StrokeType.INSIDE);

        topText = new Text("-");
        topText.setManaged(false);
        bottomText = new Text("-");
        bottomText.setManaged(false);
        rightText = new Text("-");
        rightText.setManaged(false);
        leftText = new Text("-");
        leftText.setManaged(false);

        getChildren().addAll(outsideRect, topText, bottomText, leftText, rightText);
    }

    @Override protected double computePrefWidth(final double height) {
        return THICKNESS * 3.5;
    }

    @Override protected double computePrefHeight(final double width) {
        return THICKNESS * 2.5;
    }

    @Override protected double computeMaxWidth(final double height) {
        return prefWidth(height);
    }

    @Override protected double computeMaxHeight(final double width) {
        return prefHeight(width);
    }

    @Override public double getBaselineOffset() {
        return topText.getLayoutY();
    }

    @Override protected void layoutChildren() {
        final double left = getPadding().getLeft();
        final double right = getPadding().getRight();
        final double top = getPadding().getTop();
        final double bottom = getPadding().getBottom();

        final double insideWidth = getWidth() - left - right;
        final double insideHeight = getHeight() - top - bottom;

        outsideRect.setWidth(insideWidth);
        outsideRect.setHeight(insideHeight);
        outsideRect.relocate(left, top);

        layoutInArea(topText, left, top, insideWidth, THICKNESS, 0, HPos.CENTER, VPos.CENTER);
        layoutInArea(bottomText, left, top + insideHeight - THICKNESS, insideWidth, THICKNESS, 0, HPos.CENTER, VPos.CENTER);
        layoutInArea(leftText, left, top, THICKNESS, insideHeight, 0, HPos.CENTER, VPos.CENTER);
        layoutInArea(rightText, left + insideWidth - THICKNESS, top, THICKNESS, insideHeight, 0, HPos.CENTER, VPos.CENTER);

    }

    public Insets getInsetsTarget() {
        return insets;
    }

    public void setInsetsTarget(final Insets value) {
        if ((value != null && !value.equals(insets)) || (value == null && insets != null)) {
            storeInsets(value);
        }
    }

    protected void storeInsets(final Insets value) {
        insets = value;
        topText.setText(insets != null ? DFMT.format(insets.getTop()) : "-");
        bottomText.setText(insets != null ? DFMT.format(insets.getBottom()) : "-");
        leftText.setText(insets != null ? DFMT.format(insets.getLeft()) : "-");
        rightText.setText(insets != null ? DFMT.format(insets.getRight()) : "-");
        requestLayout();
    }

}