Question

使用Synth LaF，我无法为DISABLED状态设置JLabel的FOREGROUND颜色。有人成功地这样做了吗？这是我的标签在我的LaF.xml文件中的样式定义。

    <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WHITE正常状态颜色（当我执行lbl.setEnabled（false）时它永远不会变黑）

另外，通过Synth代码，我在SynthStyle.getColor中找到了以下注释

        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);
        }

但我无法弄清楚如何为JLabel

设置禁用的颜色

感谢您的帮助！

Answer 1

我知道这个问题很老，但也许有人仍然需要答案：

要在Synth L＆amp; 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的源代码与你的不同（我的是来自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;
}

Synth LaF JLabel禁用颜色

2 个答案: