2007 * 1.0f (which means that it is translucent), {@code false} otherwise
2008 * @see GraphicsDevice.WindowTranslucency#TRANSLUCENT
2009 */
2010 public static boolean isContainingTopLevelTranslucent(Component c) {
2011 Window w = getContainingWindow(c);
2012 return w != null && ((Window)w).getOpacity() < 1.0f;
2013 }
2014
2015 /**
2016 * Returns whether the native system requires using the peer.updateWindow()
2017 * method to update the contents of a non-opaque window, or if usual
2018 * painting procedures are sufficient. The default return value covers
2019 * the X11 systems. On MS Windows this method is overriden in WToolkit
2020 * to return true.
2021 */
2022 public boolean needUpdateWindow() {
2023 return false;
2024 }
2025
2026 /**
2027 * Descendants of the SunToolkit should override and put their own logic here.
2028 */
2029 public int getNumberOfButtons(){
2030 return 3;
2031 }
2032
2033 /**
2034 * Checks that the given object implements/extends the given
2035 * interface/class.
2036 *
2037 * Note that using the instanceof operator causes a class to be loaded.
2038 * Using this method doesn't load a class and it can be used instead of
2039 * the instanceof operator for performance reasons.
2040 *
2041 * @param obj Object to be checked
2042 * @param type The name of the interface/class. Must be
2043 * fully-qualified interface/class name.
2044 * @return true, if this object implements/extends the given
2045 * interface/class, false, otherwise, or if obj or type is null
2046 */
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2007 * 1.0f (which means that it is translucent), {@code false} otherwise
2008 * @see GraphicsDevice.WindowTranslucency#TRANSLUCENT
2009 */
2010 public static boolean isContainingTopLevelTranslucent(Component c) {
2011 Window w = getContainingWindow(c);
2012 return w != null && ((Window)w).getOpacity() < 1.0f;
2013 }
2014
2015 /**
2016 * Returns whether the native system requires using the peer.updateWindow()
2017 * method to update the contents of a non-opaque window, or if usual
2018 * painting procedures are sufficient. The default return value covers
2019 * the X11 systems. On MS Windows this method is overriden in WToolkit
2020 * to return true.
2021 */
2022 public boolean needUpdateWindow() {
2023 return false;
2024 }
2025
2026 /**
2027 * Returns the background color of the window on X11 and Windows systems.
2028 *
2029 * On Mac platforms this method is overriden in LWCToolkit to return
2030 * purely transparent color for non-opaque windows as we need to draw
2031 * pure transparent pixel into a CALayer as the background color to
2032 * implement translucent windows.
2033 */
2034 public Color getLayerBackground(Window w) {
2035 return w.getBackground();
2036 }
2037
2038 /**
2039 * Descendants of the SunToolkit should override and put their own logic here.
2040 */
2041 public int getNumberOfButtons(){
2042 return 3;
2043 }
2044
2045 /**
2046 * Checks that the given object implements/extends the given
2047 * interface/class.
2048 *
2049 * Note that using the instanceof operator causes a class to be loaded.
2050 * Using this method doesn't load a class and it can be used instead of
2051 * the instanceof operator for performance reasons.
2052 *
2053 * @param obj Object to be checked
2054 * @param type The name of the interface/class. Must be
2055 * fully-qualified interface/class name.
2056 * @return true, if this object implements/extends the given
2057 * interface/class, false, otherwise, or if obj or type is null
2058 */
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