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Open Source (LGPL) JavaFX PDF Viewer for NetBeans plugin
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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * DisplayOffsets.java
 * ---------------
 */
package org.jpedal.display;

import java.awt.Point;

public class DisplayOffsets {

    /**
     * Whether the left page drag or right page drag is drawing
     */
    protected boolean dragLeft;
    protected boolean dragTop;


    /**
     * allow user to displace display
     */
    private int userOffsetX, userOffsetY, userPrintOffsetX, userPrintOffsetY;

    //store cursor position for facing drag
    private int facingCursorX = 10000, facingCursorY = 10000;

    public DisplayOffsets() {
    }

    public void setUserOffsets(final int x, final int y, final int h, final int mode) {
        switch (mode) {

            case org.jpedal.external.OffsetOptions.DISPLAY:
                userOffsetX = x;
                userOffsetY = y;
                break;

            case org.jpedal.external.OffsetOptions.PRINTING:
                userPrintOffsetX = x;
                userPrintOffsetY = -y; //make it negative so both work in same direction
                break;

            case org.jpedal.external.OffsetOptions.INTERNAL_DRAG_BLANK:
                facingCursorX = 0;
                facingCursorY = h;

                setDragCorner(mode);

                break;

            case org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_LEFT:
                facingCursorX = x;
                facingCursorY = y;

                setDragCorner(mode);

                break;

            case org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_RIGHT:
                facingCursorX = x;
                facingCursorY = y;

                setDragCorner(mode);

                break;

            case org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_LEFT:
                facingCursorX = x;
                facingCursorY = y;

                setDragCorner(mode);

                break;

            case org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_RIGHT:
                facingCursorX = x;
                facingCursorY = y;

                setDragCorner(mode);

                break;

            default:
                throw new RuntimeException("No such mode - look in org.jpedal.external.OffsetOptions for valid values");
        }
    }

    public Point getUserOffsets(final int mode) {

        switch (mode) {

            case org.jpedal.external.OffsetOptions.DISPLAY:
                return new Point(userOffsetX, userOffsetY);

            case org.jpedal.external.OffsetOptions.PRINTING:
                return new Point(userPrintOffsetX, userPrintOffsetY);

            case org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_RIGHT:
                return new Point(facingCursorX, facingCursorY);

            default:
                throw new RuntimeException("No such mode - look in org.jpedal.external.OffsetOptions for valid values");
        }
    }

    public int getUserPrintOffsetX() {
        return userPrintOffsetX;
    }

    public int getUserPrintOffsetY() {
        return userPrintOffsetY;
    }

    public int getUserOffsetX() {
        return userOffsetX;
    }

    public int getUserOffsetY() {
        return userOffsetY;
    }

    public void setDragCorner(final int a) {
        dragLeft = a == org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_LEFT ||
                a == org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_LEFT ||
                a == org.jpedal.external.OffsetOptions.INTERNAL_DRAG_BLANK;

        dragTop = a == org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_LEFT ||
                a == org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_RIGHT;
    }

    public boolean getDragLeft() {
        return dragLeft;
    }

    public boolean getDragTop() {
        return dragTop;
    }

}