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	/*
	* Copyright (c) 1998, 2005, 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
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package javax.swing.plaf.metal;

	import javax.swing.plaf.*;
	import javax.swing.*;
	import java.awt.*;
	import java.awt.image.*;
	import java.lang.ref.*;
	import java.util.*;
	import sun.swing.CachedPainter;
	import sun.swing.ImageIconUIResource;

	/**
	* This is a dumping ground for random stuff we want to use in several places.
	*
	* @author Steve Wilson
	*/

	class MetalUtils {

	static void drawFlush3DBorder(Graphics g, Rectangle r) {
	drawFlush3DBorder(g, r.x, r.y, r.width, r.height);
	}

	/**
	* This draws the "Flush 3D Border" which is used throughout the Metal L&F
	*/
	static void drawFlush3DBorder(Graphics g, int x, int y, int w, int h) {
	g.translate( x, y);
	g.setColor( MetalLookAndFeel.getControlDarkShadow() );
	g.drawRect( 0, 0, w-2, h-2 );
	g.setColor( MetalLookAndFeel.getControlHighlight() );
	g.drawRect( 1, 1, w-2, h-2 );
	g.setColor( MetalLookAndFeel.getControl() );
	g.drawLine( 0, h-1, 1, h-2 );
	g.drawLine( w-1, 0, w-2, 1 );
	g.translate( -x, -y);
	}

	/**
	* This draws a variant "Flush 3D Border"
	* It is used for things like pressed buttons.
	*/
	static void drawPressed3DBorder(Graphics g, Rectangle r) {
	drawPressed3DBorder( g, r.x, r.y, r.width, r.height );
	}

	static void drawDisabledBorder(Graphics g, int x, int y, int w, int h) {
	g.translate( x, y);
	g.setColor( MetalLookAndFeel.getControlShadow() );
	g.drawRect( 0, 0, w-1, h-1 );
	g.translate(-x, -y);
	}

	/**
	* This draws a variant "Flush 3D Border"
	* It is used for things like pressed buttons.
	*/
	static void drawPressed3DBorder(Graphics g, int x, int y, int w, int h) {
	g.translate( x, y);

	drawFlush3DBorder(g, 0, 0, w, h);

	g.setColor( MetalLookAndFeel.getControlShadow() );
	g.drawLine( 1, 1, 1, h-2 );
	g.drawLine( 1, 1, w-2, 1 );
	g.translate( -x, -y);
	}

	/**
	* This draws a variant "Flush 3D Border"
	* It is used for things like active toggle buttons.
	* This is used rarely.
	*/
	static void drawDark3DBorder(Graphics g, Rectangle r) {
	drawDark3DBorder(g, r.x, r.y, r.width, r.height);
	}

	/**
	* This draws a variant "Flush 3D Border"
	* It is used for things like active toggle buttons.
	* This is used rarely.
	*/
	static void drawDark3DBorder(Graphics g, int x, int y, int w, int h) {
	g.translate( x, y);

	drawFlush3DBorder(g, 0, 0, w, h);

	g.setColor( MetalLookAndFeel.getControl() );
	g.drawLine( 1, 1, 1, h-2 );
	g.drawLine( 1, 1, w-2, 1 );
	g.setColor( MetalLookAndFeel.getControlShadow() );
	g.drawLine( 1, h-2, 1, h-2 );
	g.drawLine( w-2, 1, w-2, 1 );
	g.translate( -x, -y);
	}

	static void drawButtonBorder(Graphics g, int x, int y, int w, int h, boolean active) {
	if (active) {
	drawActiveButtonBorder(g, x, y, w, h);
	} else {
	drawFlush3DBorder(g, x, y, w, h);
	}
	}

	static void drawActiveButtonBorder(Graphics g, int x, int y, int w, int h) {
	drawFlush3DBorder(g, x, y, w, h);
	g.setColor( MetalLookAndFeel.getPrimaryControl() );
	g.drawLine( x+1, y+1, x+1, h-3 );
	g.drawLine( x+1, y+1, w-3, x+1 );
	g.setColor( MetalLookAndFeel.getPrimaryControlDarkShadow() );
	g.drawLine( x+2, h-2, w-2, h-2 );
	g.drawLine( w-2, y+2, w-2, h-2 );
	}

	static void drawDefaultButtonBorder(Graphics g, int x, int y, int w, int h, boolean active) {
	drawButtonBorder(g, x+1, y+1, w-1, h-1, active);
	g.translate(x, y);
	g.setColor( MetalLookAndFeel.getControlDarkShadow() );
	g.drawRect( 0, 0, w-3, h-3 );
	g.drawLine( w-2, 0, w-2, 0);
	g.drawLine( 0, h-2, 0, h-2);
	g.translate(-x, -y);
	}

	static void drawDefaultButtonPressedBorder(Graphics g, int x, int y, int w, int h) {
	drawPressed3DBorder(g, x + 1, y + 1, w - 1, h - 1);
	g.translate(x, y);
	g.setColor(MetalLookAndFeel.getControlDarkShadow());
	g.drawRect(0, 0, w - 3, h - 3);
	g.drawLine(w - 2, 0, w - 2, 0);
	g.drawLine(0, h - 2, 0, h - 2);
	g.setColor(MetalLookAndFeel.getControl());
	g.drawLine(w - 1, 0, w - 1, 0);
	g.drawLine(0, h - 1, 0, h - 1);
	g.translate(-x, -y);
	}

	/*
	* Convenience function for determining ComponentOrientation. Helps us
	* avoid having Munge directives throughout the code.
	*/
	static boolean isLeftToRight( Component c ) {
	return c.getComponentOrientation().isLeftToRight();
	}

	static int getInt(Object key, int defaultValue) {
	Object value = UIManager.get(key);

	if (value instanceof Integer) {
	return ((Integer)value).intValue();
	}
	if (value instanceof String) {
	try {
	return Integer.parseInt((String)value);
	} catch (NumberFormatException nfe) {}
	}
	return defaultValue;
	}

	//
	// Ocean specific stuff.
	//
	/**
	* Draws a radial type gradient. The gradient will be drawn vertically if
	* <code>vertical</code> is true, otherwise horizontally.
	* The UIManager key consists of five values:
	* r1 r2 c1 c2 c3. The gradient is broken down into four chunks drawn
	* in order from the origin.
	* <ol>
	* <li>Gradient r1 % of the size from c1 to c2
	* <li>Rectangle r2 % of the size in c2.
	* <li>Gradient r1 % of the size from c2 to c1
	* <li>The remaining size will be filled with a gradient from c1 to c3.
	* </ol>
	*
	* @param c Component rendering to
	* @param g Graphics to draw to.
	* @param key UIManager key used to look up gradient values.
	* @param x X coordinate to draw from
	* @param y Y coordinate to draw from
	* @param w Width to draw to
	* @param h Height to draw to
	* @param vertical Direction of the gradient
	* @return true if <code>key</code> exists, otherwise false.
	*/
	static boolean drawGradient(Component c, Graphics g, String key,
	int x, int y, int w, int h, boolean vertical) {
	java.util.List gradient = (java.util.List)UIManager.get(key);
	if (gradient == null \|\| !(g instanceof Graphics2D)) {
	return false;
	}

	if (w <= 0 \|\| h <= 0) {
	return true;
	}

	GradientPainter.INSTANCE.paint(
	c, (Graphics2D)g, gradient, x, y, w, h, vertical);
	return true;
	}


	private static class GradientPainter extends CachedPainter {
	/**
	* Instance used for painting. This is the only instance that is
	* ever created.
	*/
	public static final GradientPainter INSTANCE = new GradientPainter(8);

	// Size of images to create. For vertical gradients this is the width,
	// otherwise it's the height.
	private static final int IMAGE_SIZE = 64;

	/**
	* This is the actual width we're painting in, or last painted to.
	*/
	private int w;
	/**
	* This is the actual height we're painting in, or last painted to
	*/
	private int h;


	GradientPainter(int count) {
	super(count);
	}

	public void paint(Component c, Graphics2D g,
	java.util.List gradient, int x, int y, int w,
	int h, boolean isVertical) {
	int imageWidth;
	int imageHeight;
	if (isVertical) {
	imageWidth = IMAGE_SIZE;
	imageHeight = h;
	}
	else {
	imageWidth = w;
	imageHeight = IMAGE_SIZE;
	}
	synchronized(c.getTreeLock()) {
	this.w = w;
	this.h = h;
	paint(c, g, x, y, imageWidth, imageHeight,
	gradient, isVertical);
	}
	}

	protected void paintToImage(Component c, Image image, Graphics g,
	int w, int h, Object[] args) {
	Graphics2D g2 = (Graphics2D)g;
	java.util.List gradient = (java.util.List)args[0];
	boolean isVertical = ((Boolean)args[1]).booleanValue();
	// Render to the VolatileImage
	if (isVertical) {
	drawVerticalGradient(g2,
	((Number)gradient.get(0)).floatValue(),
	((Number)gradient.get(1)).floatValue(),
	(Color)gradient.get(2),
	(Color)gradient.get(3),
	(Color)gradient.get(4), w, h);
	}
	else {
	drawHorizontalGradient(g2,
	((Number)gradient.get(0)).floatValue(),
	((Number)gradient.get(1)).floatValue(),
	(Color)gradient.get(2),
	(Color)gradient.get(3),
	(Color)gradient.get(4), w, h);
	}
	}

	protected void paintImage(Component c, Graphics g,
	int x, int y, int imageW, int imageH,
	Image image, Object[] args) {
	boolean isVertical = ((Boolean)args[1]).booleanValue();
	// Render to the screen
	g.translate(x, y);
	if (isVertical) {
	for (int counter = 0; counter < w; counter += IMAGE_SIZE) {
	int tileSize = Math.min(IMAGE_SIZE, w - counter);
	g.drawImage(image, counter, 0, counter + tileSize, h,
	0, 0, tileSize, h, null);
	}
	}
	else {
	for (int counter = 0; counter < h; counter += IMAGE_SIZE) {
	int tileSize = Math.min(IMAGE_SIZE, h - counter);
	g.drawImage(image, 0, counter, w, counter + tileSize,
	0, 0, w, tileSize, null);
	}
	}
	g.translate(-x, -y);
	}

	private void drawVerticalGradient(Graphics2D g, float ratio1,
	float ratio2, Color c1,Color c2,
	Color c3, int w, int h) {
	int mid = (int)(ratio1 * h);
	int mid2 = (int)(ratio2 * h);
	if (mid > 0) {
	g.setPaint(getGradient((float)0, (float)0, c1, (float)0,
	(float)mid, c2));
	g.fillRect(0, 0, w, mid);
	}
	if (mid2 > 0) {
	g.setColor(c2);
	g.fillRect(0, mid, w, mid2);
	}
	if (mid > 0) {
	g.setPaint(getGradient((float)0, (float)mid + mid2, c2,
	(float)0, (float)mid * 2 + mid2, c1));
	g.fillRect(0, mid + mid2, w, mid);
	}
	if (h - mid * 2 - mid2 > 0) {
	g.setPaint(getGradient((float)0, (float)mid * 2 + mid2, c1,
	(float)0, (float)h, c3));
	g.fillRect(0, mid * 2 + mid2, w, h - mid * 2 - mid2);
	}
	}

	private void drawHorizontalGradient(Graphics2D g, float ratio1,
	float ratio2, Color c1,Color c2,
	Color c3, int w, int h) {
	int mid = (int)(ratio1 * w);
	int mid2 = (int)(ratio2 * w);
	if (mid > 0) {
	g.setPaint(getGradient((float)0, (float)0, c1,
	(float)mid, (float)0, c2));
	g.fillRect(0, 0, mid, h);
	}
	if (mid2 > 0) {
	g.setColor(c2);
	g.fillRect(mid, 0, mid2, h);
	}
	if (mid > 0) {
	g.setPaint(getGradient((float)mid + mid2, (float)0, c2,
	(float)mid * 2 + mid2, (float)0, c1));
	g.fillRect(mid + mid2, 0, mid, h);
	}
	if (w - mid * 2 - mid2 > 0) {
	g.setPaint(getGradient((float)mid * 2 + mid2, (float)0, c1,
	w, (float)0, c3));
	g.fillRect(mid * 2 + mid2, 0, w - mid * 2 - mid2, h);
	}
	}

	private GradientPaint getGradient(float x1, float y1,
	Color c1, float x2, float y2,
	Color c2) {
	return new GradientPaint(x1, y1, c1, x2, y2, c2, true);
	}
	}


	/**
	* Returns true if the specified widget is in a toolbar.
	*/
	static boolean isToolBarButton(JComponent c) {
	return (c.getParent() instanceof JToolBar);
	}

	static Icon getOceanToolBarIcon(Image i) {
	ImageProducer prod = new FilteredImageSource(i.getSource(),
	new OceanToolBarImageFilter());
	return new ImageIconUIResource(Toolkit.getDefaultToolkit().createImage(prod));
	}

	static Icon getOceanDisabledButtonIcon(Image image) {
	Object[] range = (Object[])UIManager.get("Button.disabledGrayRange");
	int min = 180;
	int max = 215;
	if (range != null) {
	min = ((Integer)range[0]).intValue();
	max = ((Integer)range[1]).intValue();
	}
	ImageProducer prod = new FilteredImageSource(image.getSource(),
	new OceanDisabledButtonImageFilter(min , max));
	return new ImageIconUIResource(Toolkit.getDefaultToolkit().createImage(prod));
	}




	/**
	* Used to create a disabled Icon with the ocean look.
	*/
	private static class OceanDisabledButtonImageFilter extends RGBImageFilter{
	private float min;
	private float factor;

	OceanDisabledButtonImageFilter(int min, int max) {
	canFilterIndexColorModel = true;
	this.min = (float)min;
	this.factor = (max - min) / 255f;
	}

	public int filterRGB(int x, int y, int rgb) {
	// Coefficients are from the sRGB color space:
	int gray = Math.min(255, (int)(((0.2125f * ((rgb >> 16) & 0xFF)) +
	(0.7154f * ((rgb >> 8) & 0xFF)) +
	(0.0721f * (rgb & 0xFF)) + .5f) * factor + min));

	return (rgb & 0xff000000) \| (gray << 16) \| (gray << 8) \|
	(gray << 0);
	}
	}


	/**
	* Used to create the rollover icons with the ocean look.
	*/
	private static class OceanToolBarImageFilter extends RGBImageFilter {
	OceanToolBarImageFilter() {
	canFilterIndexColorModel = true;
	}

	public int filterRGB(int x, int y, int rgb) {
	int r = ((rgb >> 16) & 0xff);
	int g = ((rgb >> 8) & 0xff);
	int b = (rgb & 0xff);
	int gray = Math.max(Math.max(r, g), b);
	return (rgb & 0xff000000) \| (gray << 16) \| (gray << 8) \|
	(gray << 0);
	}
	}
	}

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