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	/*
	* Copyright (c) 2002, 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
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/
	package com.sun.java.swing.plaf.gtk;

	import java.util.*;
	import javax.swing.plaf.synth.*;
	import java.awt.*;
	import java.awt.image.BufferedImage;
	import java.lang.reflect.*;
	import javax.swing.*;
	import javax.swing.plaf.*;
	import sun.swing.plaf.synth.*;
	import com.sun.java.swing.plaf.gtk.GTKConstants.ArrowType;
	import com.sun.java.swing.plaf.gtk.GTKConstants.ExpanderStyle;
	import com.sun.java.swing.plaf.gtk.GTKConstants.Orientation;
	import com.sun.java.swing.plaf.gtk.GTKConstants.ShadowType;

	/**
	*/
	class GTKIconFactory {
	static final int CHECK_ICON_EXTRA_INSET = 1;
	static final int DEFAULT_ICON_SPACING = 2;
	static final int DEFAULT_ICON_SIZE = 13;
	static final int DEFAULT_TOGGLE_MENU_ITEM_SIZE = 12; // For pre-gtk2.4

	private static final String RADIO_BUTTON_ICON = "paintRadioButtonIcon";
	private static final String CHECK_BOX_ICON = "paintCheckBoxIcon";
	private static final String MENU_ARROW_ICON = "paintMenuArrowIcon";
	private static final String CHECK_BOX_MENU_ITEM_CHECK_ICON =
	"paintCheckBoxMenuItemCheckIcon";
	private static final String RADIO_BUTTON_MENU_ITEM_CHECK_ICON =
	"paintRadioButtonMenuItemCheckIcon";
	private static final String TREE_EXPANDED_ICON = "paintTreeExpandedIcon";
	private static final String TREE_COLLAPSED_ICON = "paintTreeCollapsedIcon";
	private static final String ASCENDING_SORT_ICON = "paintAscendingSortIcon";
	private static final String DESCENDING_SORT_ICON = "paintDescendingSortIcon";
	private static final String TOOL_BAR_HANDLE_ICON = "paintToolBarHandleIcon";

	private static Map<String, DelegatingIcon> iconsPool =
	Collections.synchronizedMap(new HashMap<String, DelegatingIcon>());

	private static DelegatingIcon getIcon(String methodName) {
	DelegatingIcon result = iconsPool.get(methodName);
	if (result == null) {
	if (methodName == TREE_COLLAPSED_ICON \|\|
	methodName == TREE_EXPANDED_ICON)
	{
	result = new SynthExpanderIcon(methodName);

	} else if (methodName == TOOL_BAR_HANDLE_ICON) {
	result = new ToolBarHandleIcon();

	} else if (methodName == MENU_ARROW_ICON) {
	result = new MenuArrowIcon();

	} else {
	result = new DelegatingIcon(methodName);
	}
	iconsPool.put(methodName, result);
	}
	return result;
	}

	//
	// Sort arrow
	//
	public static Icon getAscendingSortIcon() {
	return getIcon(ASCENDING_SORT_ICON);
	}

	public static Icon getDescendingSortIcon() {
	return getIcon(DESCENDING_SORT_ICON);
	}

	//
	// Tree methods
	//
	public static SynthIcon getTreeExpandedIcon() {
	return getIcon(TREE_EXPANDED_ICON);
	}

	public static SynthIcon getTreeCollapsedIcon() {
	return getIcon(TREE_COLLAPSED_ICON);
	}

	//
	// Radio button
	//
	public static SynthIcon getRadioButtonIcon() {
	return getIcon(RADIO_BUTTON_ICON);
	}

	//
	// CheckBox
	//
	public static SynthIcon getCheckBoxIcon() {
	return getIcon(CHECK_BOX_ICON);
	}

	//
	// Menus
	//
	public static SynthIcon getMenuArrowIcon() {
	return getIcon(MENU_ARROW_ICON);
	}

	public static SynthIcon getCheckBoxMenuItemCheckIcon() {
	return getIcon(CHECK_BOX_MENU_ITEM_CHECK_ICON);
	}

	public static SynthIcon getRadioButtonMenuItemCheckIcon() {
	return getIcon(RADIO_BUTTON_MENU_ITEM_CHECK_ICON);
	}

	//
	// ToolBar Handle
	//
	public static SynthIcon getToolBarHandleIcon() {
	return getIcon(TOOL_BAR_HANDLE_ICON);
	}

	static void resetIcons() {
	synchronized (iconsPool) {
	for (DelegatingIcon di: iconsPool.values()) {
	di.resetIconDimensions();
	}
	}
	}

	private static class DelegatingIcon extends SynthIcon implements
	UIResource {
	private static final Class[] PARAM_TYPES = new Class[] {
	SynthContext.class, Graphics.class, int.class,
	int.class, int.class, int.class, int.class
	};

	private Object method;
	int iconDimension = -1;

	DelegatingIcon(String methodName ){
	this.method = methodName;
	}

	public void paintIcon(SynthContext context, Graphics g,
	int x, int y, int w, int h) {
	if (context != null) {
	GTKPainter.INSTANCE.paintIcon(context, g,
	getMethod(), x, y, w, h);
	}
	}

	public int getIconWidth(SynthContext context) {
	return getIconDimension(context);
	}

	public int getIconHeight(SynthContext context) {
	return getIconDimension(context);
	}

	void resetIconDimensions() {
	iconDimension = -1;
	}

	protected Method getMethod() {
	if (method instanceof String) {
	method = resolveMethod((String)method);
	}
	return (Method)method;
	}

	protected Class[] getMethodParamTypes() {
	return PARAM_TYPES;
	}

	private Method resolveMethod(String name) {
	try {
	return GTKPainter.class.getMethod(name, getMethodParamTypes());
	} catch (NoSuchMethodException e) {
	assert false;
	}
	return null;
	}

	int getIconDimension(SynthContext context) {
	if (iconDimension >= 0) {
	return iconDimension;
	}

	if (context == null) {
	return DEFAULT_ICON_SIZE;
	}

	Region region = context.getRegion();
	GTKStyle style = (GTKStyle) context.getStyle();
	if (GTKLookAndFeel.is3() && region == Region.MENU) {
	Object value = style.getClassSpecificValue("arrow-scaling");
	if (value instanceof Number) {
	iconDimension = (int)(((Number) value).floatValue() *
	(style.getFont(context).getSize2D() +
	2 * style.getClassSpecificIntValue(context,
	"indicator-spacing", DEFAULT_ICON_SPACING)));
	if (iconDimension > 0) {
	return iconDimension;
	}
	}
	}
	iconDimension = style.getClassSpecificIntValue(context,
	"indicator-size",
	(region == Region.CHECK_BOX_MENU_ITEM \|\|
	region == Region.RADIO_BUTTON_MENU_ITEM) ?
	DEFAULT_TOGGLE_MENU_ITEM_SIZE : DEFAULT_ICON_SIZE);

	if (region == Region.CHECK_BOX \|\| region == Region.RADIO_BUTTON) {
	iconDimension += 2 * style.getClassSpecificIntValue(context,
	"indicator-spacing", DEFAULT_ICON_SPACING);
	} else if (region == Region.CHECK_BOX_MENU_ITEM \|\|
	region == Region.RADIO_BUTTON_MENU_ITEM) {
	iconDimension += 2 * CHECK_ICON_EXTRA_INSET;
	}
	return iconDimension;
	}
	}

	private static class SynthExpanderIcon extends DelegatingIcon {
	SynthExpanderIcon(String method) {
	super(method);
	}

	public void paintIcon(SynthContext context, Graphics g, int x, int y,
	int w, int h) {
	if (context != null) {
	super.paintIcon(context, g, x, y, w, h);
	updateSizeIfNecessary(context);
	}
	}

	int getIconDimension(SynthContext context) {
	updateSizeIfNecessary(context);
	return (iconDimension == -1) ? DEFAULT_ICON_SIZE :
	iconDimension;
	}

	private void updateSizeIfNecessary(SynthContext context) {
	if (iconDimension == -1 && context != null) {
	iconDimension = context.getStyle().getInt(context,
	"Tree.expanderSize", 10);
	}
	}
	}

	// GTK has a separate widget for the handle box, to mirror this
	// we create a unique icon per ToolBar and lookup the style for the
	// HandleBox.
	private static class ToolBarHandleIcon extends DelegatingIcon {
	private static final Class[] PARAM_TYPES = new Class[] {
	SynthContext.class, Graphics.class, int.class,
	int.class, int.class, int.class, int.class, Orientation.class,
	};

	private SynthStyle style;

	public ToolBarHandleIcon() {
	super(TOOL_BAR_HANDLE_ICON);
	}

	protected Class[] getMethodParamTypes() {
	return PARAM_TYPES;
	}

	public void paintIcon(SynthContext context, Graphics g, int x, int y,
	int w, int h) {
	if (context != null) {
	JToolBar toolbar = (JToolBar)context.getComponent();
	Orientation orientation =
	(toolbar.getOrientation() == JToolBar.HORIZONTAL ?
	Orientation.HORIZONTAL : Orientation.VERTICAL);

	if (style == null) {
	style = SynthLookAndFeel.getStyleFactory().getStyle(
	context.getComponent(), GTKRegion.HANDLE_BOX);
	}
	context = new SynthContext(toolbar, GTKRegion.HANDLE_BOX,
	style, SynthConstants.ENABLED);

	GTKPainter.INSTANCE.paintIcon(context, g,
	getMethod(), x, y, w, h, orientation);
	}
	}

	public int getIconWidth(SynthContext context) {
	if (context == null) {
	return 10;
	}
	if (((JToolBar)context.getComponent()).getOrientation() ==
	JToolBar.HORIZONTAL) {
	return 10;
	} else {
	return context.getComponent().getWidth();
	}
	}

	public int getIconHeight(SynthContext context) {
	if (context == null) {
	return 10;
	}
	if (((JToolBar)context.getComponent()).getOrientation() ==
	JToolBar.HORIZONTAL) {
	return context.getComponent().getHeight();
	} else {
	return 10;
	}
	}
	}

	private static class MenuArrowIcon extends DelegatingIcon {
	private static final Class[] PARAM_TYPES = new Class[] {
	SynthContext.class, Graphics.class, int.class,
	int.class, int.class, int.class, int.class, ArrowType.class,
	};

	public MenuArrowIcon() {
	super(MENU_ARROW_ICON);
	}

	protected Class[] getMethodParamTypes() {
	return PARAM_TYPES;
	}

	public void paintIcon(SynthContext context, Graphics g, int x, int y,
	int w, int h) {
	if (context != null) {
	ArrowType arrowDir = ArrowType.RIGHT;
	if (!context.getComponent().getComponentOrientation().isLeftToRight()) {
	arrowDir = ArrowType.LEFT;
	}
	GTKPainter.INSTANCE.paintIcon(context, g,
	getMethod(), x, y, w, h, arrowDir);
	}
	}
	}
	}

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