hades
5 years ago
4 changed files with 204 additions and 14 deletions
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package com.fr.design.utils; |
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import sun.awt.SunToolkit; |
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import java.awt.*; |
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/** |
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* 适配jdk10之后被移除的 com.sun.awt.AWTUtilities |
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* 参照 https://github.com/frohoff/jdk8u-dev-jdk/blob/master/src/share/classes/com/sun/awt/AWTUtilities.java中实现
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* |
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* @author hades |
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* @version 10.0 |
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* Created by hades on 2020/5/29 |
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*/ |
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public class AWTUtilities { |
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/** |
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* @param window the window to set the shape to |
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* @param shape the shape to set to the window |
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* |
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*/ |
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public static void setWindowShape(Window window, Shape shape) { |
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if (window == null) { |
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throw new NullPointerException("The window argument should not be null."); |
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} |
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window.setShape(shape); |
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} |
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/** |
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* |
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* |
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* @param window the window to set the shape to |
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* @param opaque whether the window must be opaque (true), |
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* or translucent (false) |
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* |
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*/ |
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public static void setWindowOpaque(Window window, boolean opaque) { |
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if (window == null) { |
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throw new NullPointerException("The window argument should not be null."); |
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} |
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if (!opaque && !isTranslucencySupported(Translucency.PERPIXEL_TRANSLUCENT)) { |
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throw new UnsupportedOperationException("The PERPIXEL_TRANSLUCENT translucency kind is not supported"); |
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} |
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Color color = window.getBackground(); |
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if (color == null) { |
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color = new Color(0, 0, 0, 0); |
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} |
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window.setBackground(new Color(color.getRed(), color.getGreen(), color.getBlue(), opaque ? 255 : 0)); |
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} |
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public static enum Translucency { |
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/** |
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* Represents support in the underlying system for windows each pixel |
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* of which is guaranteed to be either completely opaque, with |
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* an alpha value of 1.0, or completely transparent, with an alpha |
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* value of 0.0. |
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*/ |
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PERPIXEL_TRANSPARENT, |
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/** |
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* Represents support in the underlying system for windows all of |
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* the pixels of which have the same alpha value between or including |
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* 0.0 and 1.0. |
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*/ |
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TRANSLUCENT, |
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/** |
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* Represents support in the underlying system for windows that |
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* contain or might contain pixels with arbitrary alpha values |
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* between and including 0.0 and 1.0. |
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*/ |
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PERPIXEL_TRANSLUCENT; |
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} |
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/** |
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* Returns whether the given level of translucency is supported by |
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* the underlying system. |
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* |
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* Note that this method may sometimes return the value |
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* indicating that the particular level is supported, but |
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* the native windowing system may still not support the |
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* given level of translucency (due to the bugs in |
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* the windowing system). |
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* |
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* @param translucencyKind a kind of translucency support |
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* (either PERPIXEL_TRANSPARENT, |
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* TRANSLUCENT, or PERPIXEL_TRANSLUCENT) |
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* @return whether the given translucency kind is supported |
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*/ |
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private static boolean isTranslucencySupported(Translucency translucencyKind) { |
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switch (translucencyKind) { |
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case PERPIXEL_TRANSPARENT: |
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return isWindowShapingSupported(); |
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case TRANSLUCENT: |
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return isWindowOpacitySupported(); |
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case PERPIXEL_TRANSLUCENT: |
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return isWindowTranslucencySupported(); |
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} |
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return false; |
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} |
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/** |
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* Returns whether the windowing system supports changing the opacity |
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* value of top-level windows. |
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* Note that this method may sometimes return true, but the native |
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* windowing system may still not support the concept of |
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* translucency (due to the bugs in the windowing system). |
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*/ |
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private static boolean isWindowOpacitySupported() { |
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Toolkit curToolkit = Toolkit.getDefaultToolkit(); |
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if (!(curToolkit instanceof SunToolkit)) { |
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return false; |
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} |
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return ((SunToolkit)curToolkit).isWindowOpacitySupported(); |
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} |
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/** |
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* Returns whether the windowing system supports changing the shape |
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* of top-level windows. |
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* Note that this method may sometimes return true, but the native |
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* windowing system may still not support the concept of |
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* shaping (due to the bugs in the windowing system). |
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*/ |
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private static boolean isWindowShapingSupported() { |
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Toolkit curToolkit = Toolkit.getDefaultToolkit(); |
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if (!(curToolkit instanceof SunToolkit)) { |
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return false; |
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} |
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return ((SunToolkit)curToolkit).isWindowShapingSupported(); |
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} |
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private static boolean isWindowTranslucencySupported() { |
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/* |
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* Per-pixel alpha is supported if all the conditions are TRUE: |
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* 1. The toolkit is a sort of SunToolkit |
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* 2. The toolkit supports translucency in general |
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* (isWindowTranslucencySupported()) |
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* 3. There's at least one translucency-capable |
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* GraphicsConfiguration |
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*/ |
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Toolkit curToolkit = Toolkit.getDefaultToolkit(); |
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if (!(curToolkit instanceof SunToolkit)) { |
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return false; |
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} |
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if (!((SunToolkit)curToolkit).isWindowTranslucencySupported()) { |
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return false; |
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} |
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GraphicsEnvironment env = |
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GraphicsEnvironment.getLocalGraphicsEnvironment(); |
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// If the default GC supports translucency return true.
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// It is important to optimize the verification this way,
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// see CR 6661196 for more details.
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if (isTranslucencyCapable(env.getDefaultScreenDevice() |
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.getDefaultConfiguration())) |
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{ |
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return true; |
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} |
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// ... otherwise iterate through all the GCs.
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GraphicsDevice[] devices = env.getScreenDevices(); |
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for (int i = 0; i < devices.length; i++) { |
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GraphicsConfiguration[] configs = devices[i].getConfigurations(); |
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for (int j = 0; j < configs.length; j++) { |
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if (isTranslucencyCapable(configs[j])) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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private static boolean isTranslucencyCapable(GraphicsConfiguration gc) { |
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if (gc == null) { |
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throw new NullPointerException("The gc argument should not be null"); |
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} |
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/* |
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return gc.isTranslucencyCapable(); |
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*/ |
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Toolkit curToolkit = Toolkit.getDefaultToolkit(); |
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if (!(curToolkit instanceof SunToolkit)) { |
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return false; |
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} |
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return ((SunToolkit)curToolkit).isTranslucencyCapable(gc); |
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} |
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} |
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