CComboContentAdapter.java 文件源码

public Rectangle getInsertionBounds(Control control) {
    // This doesn't take horizontal scrolling into affect. 
    // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=204599
    CCombo combo = (CCombo) control;
    int position = combo.getSelection().y;
    String contents = combo.getText();
    GC gc = new GC(combo);
    gc.setFont(combo.getFont());
    Point extent = gc.textExtent(contents.substring(0, Math.min(position,
            contents.length())));
    gc.dispose();
    if (COMPUTE_TEXT_USING_CLIENTAREA) {
        return new Rectangle(combo.getClientArea().x + extent.x, combo
            .getClientArea().y, 1, combo.getClientArea().height);
    }
    return new Rectangle(extent.x, 0, 1, combo.getSize().y);
}