pixmapstyle.java

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/*
 * @(#)PixmapStyle.java	1.19 03/12/19
 *
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.sun.java.swing.plaf.gtk;

import javax.swing.plaf.synth.*;
import java.awt.*;
import java.util.*;
import javax.swing.*;
import java.security.*;
import sun.swing.plaf.synth.*;

/**
 * PixmapStyle extends GTKStyle adding support for a set of <code>Info</code>s.
 *
 * @version 1.19, 12/19/03
 * @author Scott Violet
 */
class PixmapStyle extends GTKStyle implements GTKConstants {
    /**
     * There should only ever be one pixmap engine.
     */
    private static final GTKEngine PIXMAP_ENGINE = new PixmapEngine();


    /**
     * Set of Infos used to determine what to paint.
     */
    private Info[] info;


    /**
     * Creates a duplicate of the passed in style.
     */
    public PixmapStyle(DefaultSynthStyle style) {
        super(style);
        if (style instanceof PixmapStyle) {
            this.info = ((PixmapStyle)style).info;
        }
    }

    /**
     * Creates a PixmapStyle from the passed in arguments.
     */
    public PixmapStyle(StateInfo[] states,
                       CircularIdentityList classSpecificValues,
                       Font font,
                       int xThickness, int yThickness,
                       GTKStockIconInfo[] icons,
                       Info[] info) {
        super(states, classSpecificValues, font, xThickness, yThickness, icons);
        this.info = info;
    }

    /**
     * Adds the state of this PixmapStyle to that of <code>s</code>
     * returning a combined SynthStyle.
     */
    public DefaultSynthStyle addTo(DefaultSynthStyle s) {
        if (!(s instanceof PixmapStyle)) {
            s = new PixmapStyle(s);
        }
        PixmapStyle style = (PixmapStyle)super.addTo(s);
        if (info != null) {
            if (style.info == null) {
                style.info = info;
            }
            else {
                // Place the more specific first.
                Info[] merged = new Info[style.info.length + info.length];
                System.arraycopy(info, 0, merged, 0, info.length);
                System.arraycopy(style.info, 0, merged, info.length,
                                 style.info.length);
                style.info = merged;
            }
        }
        return style;
    }

    /**
     * Creates a copy of the reciever and returns it.
     */
    public Object clone() {
        PixmapStyle style = (PixmapStyle)super.clone();

        // Info is immutable, no need to clone it.
        style.info = this.info;
        return style;
    }

    /**
     * Returns a GTKEngine to use for rendering.
     */
    public GTKEngine getEngine(SynthContext context) {
        return PIXMAP_ENGINE;
    }

    /**
     * Returns the first instance of Info that matches the past in args, may
     * return null if nothing matches.
     *
     * @param function String name for the painting method
     * @param detail Description of what is being painted
     * @param componentState State of the Component
     * @param shadow Shadow type
     * @param orientation Orientation of what is being painted
     * @param gapSide Side of the gap being drawn
     * @param arrowDirection direction of the arrow.
     * @return Best matching Info, or null if none match
     */
    public Info getInfo(String function, String detail, int componentState,
                        int shadow, int orientation, int gapSide,
                        int arrowDirection) {
        if (info != null) {
            for (int counter = 0, max = info.length; counter < max;counter++) {
                if (info[counter].getFunction() == function && info[counter].
                              getMatchCount(detail, componentState, shadow,
                              orientation, gapSide, arrowDirection) != -1) {
                    return info[counter];
                }
            }
        }
        return null;
    }

    /**
     * Returns the number of non-null arugments and arguments that are
     * != UNDEFINED.
     */
    private int getMaxMatchCount(int componentState, int shadow,
                                 int orientation, int gapSide,
                                 int arrowDirection, String detail) {
        int count = 0;

        if (detail != null) {
            count++;
        }
        if (componentState != UNDEFINED) {
            count++;
        }
        if (shadow != UNDEFINED) {
            count++;
        }
        if (orientation != UNDEFINED) {
            count++;
        }
        if (gapSide != UNDEFINED) {
            count++;
        }
        if (arrowDirection != UNDEFINED) {
            count++;
        }
        return count;
    }


    /**
     * A description of how to paint a portion of a widget.
     */
    public static class Info {
        // match data
        private String function = null;
        private String detail = null;
        int gapSide = UNDEFINED;
        int orientation = UNDEFINED;
        int componentState = UNDEFINED;
        int shadow = UNDEFINED;
        int arrowDirection = UNDEFINED;

        boolean recolorable = false;

        // background
        Object image = null;
        Insets fileInsets = null;
        boolean stretch = false;

        // overlay
        Object overlayImage = null;
        Insets overlayInsets = null;
        boolean overlayStretch = false;

        // gap start
        Object gapStartImage = null;
        Insets gapStartInsets = null;

        // gap
        Object gapImage = null;
        Insets gapInsets = null;

        // gap end
        Object gapEndImage = null;
        Insets gapEndInsets = null;

        public void setFunction(String function) {
            this.function = function.intern();
        }

        public void setDetail(String detail) {
            this.detail = detail.intern();
        }

        public String getFunction() {
            return function;
        }

        public Image getImage() {
            image = getImage(image);
            return (Image)image;
        }

        public boolean isRecolorable() {
            return recolorable;
        }

        public Insets getImageInsets() {
            return fileInsets;
        }

        public boolean getStretch() {
            return stretch;
        }

        public String getDetail() {
            return detail;
        }

        public int getComponentState() {
            return componentState;
        }

        public int getShadow() {
            return shadow;
        }

        public int getGapSide() {
            return gapSide;
        }

        public Image getGapImage() {
            gapImage = getImage(gapImage);
            return (Image)gapImage;
        }

        public Insets getGapInsets() {
            return gapInsets;
        }

        public Image getGapStartImage() {
            gapStartImage = getImage(gapStartImage);
            return (Image)gapStartImage;
        }

        public Insets getGapStartInsets() {
            return gapStartInsets;
        }

        public Image getGapEndImage() {
            gapEndImage = getImage(gapEndImage);
            return (Image)gapEndImage;
        }

        public Insets getGapEndInsets() {
            return gapEndInsets;
        }

        public Image getOverlayImage() {
            overlayImage = getImage(overlayImage);
            return (Image)overlayImage;