合成 LaF JLabel 禁用颜色

Question

使用 Synth LaF，我无法将 JLabel 的前景颜色设置为“禁用”状态。有人成功做到这一点吗？这是 LaF.xml 文件中标签的样式定义。

    <style id="whiteLabelStyle">
        <opaque value="false"/>
        <font name="Bitstream Vera Sans" size="16" />
        <state>
            <color type="FOREGROUND" value="WHITE"/>
        </state>
        <state value="DISABLED">
            <color type="FOREGROUND" value="BLACK"/>
        </state>
    </style>
    <bind style="whiteLabelStyle" type="name" key="WhiteOrbitLabel"/>

请注意，我的 LaF.xml 文件中定义的所有其他样式都在我的应用程序中正确呈现，包括我的标签的白色正常状态颜色（当我执行 lbl.setEnabled(false) 时，它永远不会变成黑色）

另外，通过 Synth 代码，我在 SynthStyle.getColor 中找到了以下评论，

        if ((context.getComponentState() & SynthConstants.DISABLED) != 0) {
        //This component is disabled, so return the disabled color.
        //In some cases this means ignoring the color specified by the
        //developer on the component. In other cases it means using a
        //specified disabledTextColor, such as on JTextComponents.
        //For example, JLabel doesn't specify a disabled color that the
        //developer can set, yet it should have a disabled color to the
        //text when the label is disabled. This code allows for that.
        if (c instanceof JTextComponent) {
            JTextComponent txt = (JTextComponent)c;
            Color disabledColor = txt.getDisabledTextColor();
            if (disabledColor == null || disabledColor instanceof UIResource) {
                return getColorForState(context, type);
            }
        } else if (c instanceof JLabel 
                && (type == ColorType.FOREGROUND || type == ColorType.TEXT_FOREGROUND)){
            return getColorForState(context, type);
        }

但我不知道如何为 JLabel 设置禁用颜色，

感谢您的帮助！

Answer 1

我知道这个问题已经很老了，但也许有人仍然需要答案：

要在 Synth L&F 中自定义文本颜色，您需要将颜色类型设置为“TEXT_FOREGROUND”，如下所示：

<state value="DISABLED">
    <color type="TEXT_FOREGROUND" value="BLACK"/>
</state>

Answer 2

我发现 SynthStyle.getColor 的源代码与您的不同（我的源代码来自 Sun JDK 1.5）：

/**
 * Returns the color for the specified state. This gives precedence to
 * foreground and background of the <code>JComponent</code>. If the
 * <code>Color</code> from the <code>JComponent</code> is not appropriate,
 * or not used, this will invoke <code>getColorForState</code>. Subclasses
 * should generally not have to override this, instead override
 * {@link #getColorForState}.
 *
 * @param context SynthContext identifying requester
 * @param type Type of color being requested.
 * @return Color
 */
public Color getColor(SynthContext context, ColorType type) {
    JComponent c = context.getComponent();
    Region id = context.getRegion();
    int cs = context.getComponentState();
    // For the enabled state, prefer the widget's colors
    if (!id.isSubregion() && cs == SynthConstants.ENABLED) {
        if (type == ColorType.BACKGROUND) {
            return c.getBackground();
        }
        else if (type == ColorType.FOREGROUND) {
            return c.getForeground();
        }
        else if (type == ColorType.TEXT_FOREGROUND) {
            // If getForeground returns a non-UIResource it means the
            // developer has explicitly set the foreground, use it over
            // that of TEXT_FOREGROUND as that is typically the expected
            // behavior.
            Color color = c.getForeground();
            if (!(color instanceof UIResource)) {
                return color;
            }
        }
    }
    // Then use what we've locally defined
    Color color = getColorForState(context, type);
    if (color == null) {
        // No color, fallback to that of the widget.
        if (type == ColorType.BACKGROUND ||
                    type == ColorType.TEXT_BACKGROUND) {
            return c.getBackground();
        }
        else if (type == ColorType.FOREGROUND ||
                 type == ColorType.TEXT_FOREGROUND) {
            return c.getForeground();
        }
    }
    return color;
}