如何获得当前Blackberry主题的高亮颜色?

时间:2009-09-21 04:29:10

标签: user-interface blackberry themes look-and-feel

我已经实现了一些自定义字段,并希望保持与当前Blackberry主题一致的外观。因此,我希望字段的突出显示颜色与BB应用程序中使用的突出显示颜色一致。

我怎样才能得到这种颜色?

编辑:显然,no way可以从任何API获取这些颜色。那么有一种解决这些颜色的解决办法吗?

2 个答案:

答案 0 :(得分:3)

我们可以做的是在某些自定义文本字段的drawFocus方法上测试颜色:

class TestField extends TextField {
    TestThemeListener mListener;
    public TestField(TestThemeListener listener) {
        super(EDITABLE | FOCUSABLE);
        setText("Hello this is a color test");
        setSelection(0, true, 10);
        mListener = listener;
    }
    protected void drawFocus(Graphics g, boolean on) {
        drawHighlightRegion(g, HIGHLIGHT_FOCUS, true, 0, 0, 50, 20);
        Bitmap bmp = new Bitmap(50, 20);
        Display.screenshot(bmp, 0, 0, 50, 20);
        int[] argbData = new int[1];
        bmp.getARGB(argbData, 0, 1, 0, 0, 1, 1);
        int focusColor = argbData[0];
        drawHighlightRegion(g, HIGHLIGHT_SELECT, true, 50, 0, 50, 20);
        Display.screenshot(bmp, 50, 0, 50, 20);
        argbData = new int[1];
        bmp.getARGB(argbData, 0, 1, 0, 0, 1, 1);
        int selectionColor = argbData[0];
        if (null != mListener) {
            mListener.themeTested(focusColor, selectionColor);
            mListener = null;
        }
    }
}

interface TestThemeListener {
    void themeTested(int focusColor, int selectionColor);
}

并在屏幕上使用它:

class Scr extends MainScreen implements TestThemeListener {
    LabelField mSelectionColorName;
    LabelField mFocusColorName;
    public Scr() {
        add(new TestField(this));
    }
    public void themeTested(int focusColor, int selectionColor) {
        add(new LabelField("Theme colors (AARRGGBB)"));
        add(new LabelField("Focus : " + focusColor));
        Bitmap bmpF = new Bitmap(100, 20);
        Graphics gF = new Graphics(bmpF);
        gF.setColor(focusColor);
        gF.fillRect(0, 0, 100, 20);
        add(new BitmapField(bmpF));
        add(new LabelField("Selection : " + selectionColor));
        Bitmap bmpS = new Bitmap(100, 20);
        Graphics gS = new Graphics(bmpS);
        gS.setColor(selectionColor);
        gS.fillRect(0, 0, 100, 20);
        add(new BitmapField(bmpS));
    }
}

color test app screenshot http://img188.imageshack.us/img188/8943/830001.png

答案 1 :(得分:1)

这很好但是有问题。必须对应用程序进行签名,并向用户显示一个确认信息,例如“应用程序xxx想要拍摄屏幕截图。允许吗?”这可能会让用户烦恼。这是因为在设备类中使用安全API。

相反,请尝试从Graphics创建新的Bitmap,然后在其上绘制。

class TestField : extends Field {
    int getHighlightColor() {
        Bitmap image = new Bitmap(getWidth(), getHeight());
        Graphics g = new Graphics(image).
        drawHighlightRegion(g, Field.HIGHLIGHT_FOCUS, true, 0, 0, getWidth(), getHeight());
        paint(
        argbData = new int[1];
        image.getARGB(argbData, 0, 1, 0, 0, 1, 1);
        return argbData[0];
    }
}