MainKeyboardView.java 文件源码

private void drawLanguageOnSpacebar(final Key key, final Canvas canvas, final Paint paint) {
    final Keyboard keyboard = getKeyboard();
    if (keyboard == null) {
        return;
    }
    final int width = key.getWidth();
    final int height = key.getHeight();
    paint.setTextAlign(Align.CENTER);
    paint.setTypeface(Typeface.DEFAULT);
    paint.setTextSize(mLanguageOnSpacebarTextSize);
    final String language = layoutLanguageOnSpacebar(paint, keyboard.mId.mSubtype, width);
    // Draw language text with shadow
    final float descent = paint.descent();
    final float textHeight = -paint.ascent() + descent;
    final float baseline = height / 2 + textHeight / 2;
    if (mLanguageOnSpacebarTextShadowRadius > 0.0f) {
        paint.setShadowLayer(mLanguageOnSpacebarTextShadowRadius, 0, 0,
                mLanguageOnSpacebarTextShadowColor);
    } else {
        paint.clearShadowLayer();
    }
    paint.setColor(mLanguageOnSpacebarTextColor);
    paint.setAlpha(mLanguageOnSpacebarAnimAlpha);
    canvas.drawText(language, width / 2, baseline - descent, paint);
    paint.clearShadowLayer();
    paint.setTextScaleX(1.0f);
}