nimbusstyle.java

来自「Mobile 应用程序使用 Java Micro Edition (Java M」· Java 代码 · 共 1,243 行 · 第 1/4 页

                    in.bottom *= MINI_SCALE;
                    in.top *= MINI_SCALE;
                    in.left *= MINI_SCALE;
                    in.right *= MINI_SCALE;
                }
            }
            return in;
        }
    }

    /**
     * @InheritDoc
     *
     * <p>Overridden to cause this style to populate itself with data from
     * UIDefaults, if necessary.</p>
     *
     * <p>In addition, NimbusStyle handles ColorTypes slightly differently from
     * Synth.</p>
     * <ul>
     *  <li>ColorType.BACKGROUND will equate to the color stored in UIDefaults
     *      named "background".</li>
     *  <li>ColorType.TEXT_BACKGROUND will equate to the color stored in
     *      UIDefaults named "textBackground".</li>
     *  <li>ColorType.FOREGROUND will equate to the color stored in UIDefaults
     *      named "textForeground".</li>
     *  <li>ColorType.TEXT_FOREGROUND will equate to the color stored in
     *      UIDefaults named "textForeground".</li>
     * </ul>
     */
    @Override protected Color getColorForState(SynthContext ctx, ColorType type) {
        String key = null;
        if (type == ColorType.BACKGROUND) {
            key = "background";
        } else if (type == ColorType.FOREGROUND) {
            //map FOREGROUND as TEXT_FOREGROUND
            key = "textForeground";
        } else if (type == ColorType.TEXT_BACKGROUND) {
            key = "textBackground";
        } else if (type == ColorType.TEXT_FOREGROUND) {
            key = "textForeground";
        } else if (type == ColorType.FOCUS) {
            key = "focus";
        } else if (type != null) {
            key = type.toString();
        } else {
            return DEFAULT_COLOR;
        }
        Color c = (Color) get(ctx, key);
        //if all else fails, return a default color (which is a ColorUIResource)
        if (c == null) c = DEFAULT_COLOR;
        return c;
    }

    /**
     * @InheritDoc
     *
     * Overridden to cause this style to populate itself with data from
     * UIDefaults, if necessary. If a value named "font" is not found in
     * UIDefaults, then the "defaultFont" font in UIDefaults will be returned
     * instead.
     */
    @Override protected Font getFontForState(SynthContext ctx) {
        Font f = (Font)get(ctx, "font");
        if (f == null) f = UIManager.getFont("defaultFont");

        // Account for scale
        // The key "JComponent.sizeVariant" is used to match Apple's LAF
        String scaleKey = (String)ctx.getComponent().getClientProperty(
                "JComponent.sizeVariant");
        if (scaleKey != null){
            if (LARGE_KEY.equals(scaleKey)){
                f = f.deriveFont(Math.round(f.getSize2D()*LARGE_SCALE));
            } else if (SMALL_KEY.equals(scaleKey)){
                f = f.deriveFont(Math.round(f.getSize2D()*SMALL_SCALE));
            } else if (MINI_KEY.equals(scaleKey)){
                f = f.deriveFont(Math.round(f.getSize2D()*MINI_SCALE));
            }
        }
        return f;

    }

    /**
     * @InheritDoc
     * 
     * Returns the SynthPainter for this style, which ends up delegating to
     * the Painters installed in this style.
     */
    @Override public SynthPainter getPainter(SynthContext ctx) {
        return painter;
    }

    /**
     * @InheritDoc
     *
     * Overridden to cause this style to populate itself with data from
     * UIDefaults, if necessary. If opacity is not specified in UI defaults,
     * then it defaults to being non-opaque.
     */
    @Override public boolean isOpaque(SynthContext ctx) {
        // Force Table CellRenderers to be opaque
        if ("Table.cellRenderer".equals(ctx.getComponent().getName())) {
            return true;
        }
        Boolean opaque = (Boolean)get(ctx, "opaque");
        return opaque == null ? false : opaque;
    }

    /**
     * @InheritDoc
     *
     * <p>Overridden to cause this style to populate itself with data from
     * UIDefaults, if necessary.</p>
     *
     * <p>Properties in UIDefaults may be specified in a chained manner. For
     * example:
     * <pre>
     * background
     * Button.opacity
     * Button.Enabled.foreground
     * Button.Enabled+Selected.background
     * </pre></p>
     *
     * <p>In this example, suppose you were in the Enabled+Selected state and
     * searched for "foreground". In this case, we first check for
     * Button.Enabled+Selected.foreground, but no such color exists. We then
     * fall back to the next valid state, in this case,
     * Button.Enabled.foreground, and have a match. So we return it.</p>
     *
     * <p>Again, if we were in the state Enabled and looked for "background", we
     * wouldn't find it in Button.Enabled, or in Button, but would at the top
     * level in UIManager. So we return that value.</p>
     *
     * <p>One special note: the "key" passed to this method could be of the form
     * "background" or "Button.background" where "Button" equals the prefix
     * passed to the NimbusStyle constructor. In either case, it looks for
     * "background".</p>
     * 
     * @param ctx
     * @param key must not be null
     */
    @Override public Object get(SynthContext ctx, Object key) {
        Values v = getValues(ctx);

        // strip off the prefix, if there is one.
        String fullKey = key.toString();
        String partialKey = fullKey.substring(fullKey.indexOf(".") + 1);

        Object obj = null;
        int xstate = getExtendedState(ctx, v);
        
        // check the cache
        tmpKey.init(partialKey, xstate);
        obj = v.cache.get(tmpKey);
        boolean wasInCache = obj != null;
        if (!wasInCache){
            // Search exact matching states and then lesser matching states
            RuntimeState s = null;
            int[] lastIndex = new int[] {-1};
            while (obj == null &&
                    (s = getNextState(v.states, lastIndex, xstate)) != null) {
                obj = s.defaults.get(partialKey);
            }
            // Search Region Defaults
            if (obj == null && v.defaults != null) {
                obj = v.defaults.get(partialKey);
            }
            // return found object
            // Search UIManager Defaults
            if (obj == null) obj = UIManager.get(fullKey);
            // Search Synth Defaults for InputMaps
            if (obj == null && partialKey.equals("focusInputMap")) {
                obj = super.get(ctx, fullKey);
            }
            // if all we got was a null, store this fact for later use
            v.cache.put(new CacheKey(partialKey, xstate),
                    obj == null ? NULL : obj);
        }
        // return found object
        return obj == NULL ? null : obj;
    }

    /**
     * Gets the appropriate background Painter, if there is one, for the state
     * specified in the given SynthContext. This method does appropriate
     * fallback searching, as described in #get.
     *
     * @param ctx The SynthContext. Must not be null.
     * @return The background painter associated for the given state, or null if
     * none could be found.
     */
    public Painter getBackgroundPainter(SynthContext ctx) {
        Values v = getValues(ctx);
        int xstate = getExtendedState(ctx, v);
        Painter p = null;

        // check the cache
        tmpKey.init("backgroundPainter$$instance", xstate);
        p = (Painter)v.cache.get(tmpKey);
        if (p != null) return p;

        // not in cache, so lookup and store in cache
        RuntimeState s = null;
        int[] lastIndex = new int[] {-1};
        while ((s = getNextState(v.states, lastIndex, xstate)) != null) {
            if (s.backgroundPainter != null) {
                p = s.backgroundPainter;
                break;
            }
        }
        if (p == null) p = (Painter)get(ctx, "backgroundPainter");
        if (p != null) {
            v.cache.put(new CacheKey("backgroundPainter$$instance", xstate), p);
        }
        return p;
    }

    /**
     * Gets the appropriate foreground Painter, if there is one, for the state
     * specified in the given SynthContext. This method does appropriate
     * fallback searching, as described in #get.
     *
     * @param ctx The SynthContext. Must not be null.
     * @return The foreground painter associated for the given state, or null if
     * none could be found.
     */
    public Painter getForegroundPainter(SynthContext ctx) {
        Values v = getValues(ctx);
        int xstate = getExtendedState(ctx, v);
        Painter p = null;

        // check the cache
        tmpKey.init("foregroundPainter$$instance", xstate);
        p = (Painter)v.cache.get(tmpKey);
        if (p != null) return p;

        // not in cache, so lookup and store in cache
        RuntimeState s = null;
        int[] lastIndex = new int[] {-1};
        while ((s = getNextState(v.states, lastIndex, xstate)) != null) {
            if (s.foregroundPainter != null) {
                p = s.foregroundPainter;
                break;
            }
        }
        if (p == null) p = (Painter)get(ctx, "foregroundPainter");
        if (p != null) {
            v.cache.put(new CacheKey("foregroundPainter$$instance", xstate), p);
        }
        return p;
    }

    /**
     * Gets the appropriate border Painter, if there is one, for the state
     * specified in the given SynthContext. This method does appropriate
     * fallback searching, as described in #get.
     *
     * @param ctx The SynthContext. Must not be null.
     * @return The border painter associated for the given state, or null if
     * none could be found.
     */
    public Painter getBorderPainter(SynthContext ctx) {
        Values v = getValues(ctx);
        int xstate = getExtendedState(ctx, v);
        Painter p = null;

        // check the cache
        tmpKey.init("borderPainter$$instance", xstate);
        p = (Painter)v.cache.get(tmpKey);
        if (p != null) return p;

        // not in cache, so lookup and store in cache
        RuntimeState s = null;
        int[] lastIndex = new int[] {-1};
        while ((s = getNextState(v.states, lastIndex, xstate)) != null) {
            if (s.borderPainter != null) {
                p = s.borderPainter;
                break;
            }
        }
        if (p == null) p = (Painter)get(ctx, "borderPainter");
        if (p != null) {
            v.cache.put(new CacheKey("borderPainter$$instance", xstate), p);
        }
        return p;
    }

    /**
     * Utility method which returns the proper Values based on the given
     * SynthContext. Ensures that parsing of the values has occurred, or
     * reoccurs as necessary.
     * 
     * @param ctx The SynthContext
     * @return a non-null values reference
     */
    private Values getValues(SynthContext ctx) {
        validate();
        return values;
    }
    
    /**
     * Simple utility method that searchs the given array of Strings for the
     * given string. This method is only called from getExtendedState if
     * the developer has specified a specific state for the component to be
     * in (ie, has "wedged" the component in that state) by specifying
     * they client property "Nimbus.State".
     * 
     * @param names a non-null array of strings
     * @param name the name to look for in the array
     * @return true or false based on whether the given name is in the array
     */