/*
 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

package jdk.swing.interop;

import java.awt.Graphics;
import java.awt.Component;
import java.awt.Container;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.AWTEvent;
import java.awt.EventQueue;
import java.awt.image.BufferedImage;
import sun.awt.SunToolkit;
import sun.awt.AppContext;
import sun.awt.AWTAccessor;
import sun.awt.UngrabEvent;
import sun.awt.image.IntegerComponentRaster;
import sun.java2d.SunGraphics2D;
import sun.java2d.SurfaceData;

/**
 * This class provides static utility methods to be used by FX swing interop 
 * to access and use jdk internal classes like SunToolkit, AppContext, AWTAccessor, 
 * UngrabEvent, IntegerComponentRaster, SunGraphics2D and SurfaceData.
 */
public class SwingInterOpUtils {
    public static double getDefaultScaleX(Graphics g) {
        if (g instanceof SunGraphics2D) {
            SurfaceData sd = ((SunGraphics2D) g).surfaceData;
            return sd.getDefaultScaleX();
        }
        return 1.0;
    }

    public static double getDefaultScaleY(Graphics g) {
        if (g instanceof SunGraphics2D) {
            SurfaceData sd = ((SunGraphics2D) g).surfaceData;
            return sd.getDefaultScaleY();
        }
        return 1.0;
    }

     public static int[] getData(BufferedImage bimg) {
        IntegerComponentRaster icr =
                        (IntegerComponentRaster) bimg.getRaster();
        int data[] = icr.getDataStorage();
        return data;
    }

    public static int getOffset(BufferedImage bimg) {
        IntegerComponentRaster icr =
                (IntegerComponentRaster) bimg.getRaster();
        int offset = icr.getDataOffset(0);
        return offset;
    }

    public static int getScanlineStride(BufferedImage bimg) {
        IntegerComponentRaster icr =
                (IntegerComponentRaster) bimg.getRaster();
        int scan = icr.getScanlineStride();
        return scan;
    }

    public static void postEvent(Object target, java.awt.AWTEvent e) {
        AppContext context = SunToolkit.targetToAppContext(target);
        if (context != null) {
            SunToolkit.postEvent(context, e);
        }
    }

    public static void grab(Toolkit toolkit, Window window) {
        if (toolkit instanceof SunToolkit) {
	    ((SunToolkit)toolkit).grab(window);
	}
    }

    public static void ungrab(Toolkit toolkit, Window window) {
        if (toolkit instanceof SunToolkit) {
	    ((SunToolkit)toolkit).ungrab(window);
	}
    }

    public static boolean isUngrabEvent(AWTEvent e) {
        return e instanceof UngrabEvent;
    }

    public static final int GRAB_EVENT_MASK = SunToolkit.GRAB_EVENT_MASK;

}