43
44
45 /**
46 * Implements Theme Support for Windows XP.
47 *
48 * @author Sergey Salishev
49 * @author Bino George
50 * @author Igor Kushnirskiy
51 */
52 public final class ThemeReader {
53
54 private static final Map<String, Long> widgetToTheme = new HashMap<>();
55
56 // lock for the cache
57 // reading should be done with readLock
58 // writing with writeLock
59 private static final ReadWriteLock readWriteLock =
60 new ReentrantReadWriteLock();
61 private static final Lock readLock = readWriteLock.readLock();
62 private static final Lock writeLock = readWriteLock.writeLock();
63
64 static void flush() {
65 writeLock.lock();
66 try {
67 // Close old themes.
68 for (Long value : widgetToTheme.values()) {
69 closeTheme(value.longValue());
70 }
71 widgetToTheme.clear();
72 } finally {
73 writeLock.unlock();
74 }
75 }
76
77 public static native boolean isThemed();
78
79 // this should be called only with writeLock held
80 private static Long getThemeImpl(String widget) {
81 Long theme = widgetToTheme.get(widget);
82 if (theme == null) {
83 int i = widget.indexOf("::");
84 if (i > 0) {
85 // We're using the syntax "subAppName::controlName" here, as used by msstyles.
86 // See documentation for SetWindowTheme on MSDN.
87 setWindowTheme(widget.substring(0, i));
88 theme = openTheme(widget.substring(i+2));
89 setWindowTheme(null);
90 } else {
91 theme = openTheme(widget);
92 }
93 widgetToTheme.put(widget, theme);
94 }
95 return theme;
96 }
97
98 // returns theme value
99 // this method should be invoked with readLock locked
100 private static Long getTheme(String widget) {
101 // mostly copied from the javadoc for ReentrantReadWriteLock
102 Long theme = widgetToTheme.get(widget);
103 if (theme == null) {
104 readLock.unlock();
105 writeLock.lock();
106 try {
107 theme = getThemeImpl(widget);
108 } finally {
109 readLock.lock();
110 writeLock.unlock();// Unlock write, still hold read
111 }
112 }
113 return theme;
114 }
115
116 private static native void paintBackground(int[] buffer, long theme,
117 int part, int state, int x,
118 int y, int w, int h, int stride);
119
120 public static void paintBackground(int[] buffer, String widget,
|
43
44
45 /**
46 * Implements Theme Support for Windows XP.
47 *
48 * @author Sergey Salishev
49 * @author Bino George
50 * @author Igor Kushnirskiy
51 */
52 public final class ThemeReader {
53
54 private static final Map<String, Long> widgetToTheme = new HashMap<>();
55
56 // lock for the cache
57 // reading should be done with readLock
58 // writing with writeLock
59 private static final ReadWriteLock readWriteLock =
60 new ReentrantReadWriteLock();
61 private static final Lock readLock = readWriteLock.readLock();
62 private static final Lock writeLock = readWriteLock.writeLock();
63 private static volatile boolean valid = false;
64
65 static volatile boolean xpStyleEnabled;
66
67 static void flush() {
68 // Could be called on Toolkit thread, so do not try to acquire locks
69 // to avoid deadlock with theme initialization
70 valid = false;
71 }
72
73 public static native boolean isThemed();
74
75 public static boolean isXPStyleEnabled() {
76 return xpStyleEnabled;
77 }
78
79 // this should be called only with writeLock held
80 private static Long getThemeImpl(String widget) {
81 Long theme = widgetToTheme.get(widget);
82 if (theme == null) {
83 int i = widget.indexOf("::");
84 if (i > 0) {
85 // We're using the syntax "subAppName::controlName" here, as used by msstyles.
86 // See documentation for SetWindowTheme on MSDN.
87 setWindowTheme(widget.substring(0, i));
88 theme = openTheme(widget.substring(i+2));
89 setWindowTheme(null);
90 } else {
91 theme = openTheme(widget);
92 }
93 widgetToTheme.put(widget, theme);
94 }
95 return theme;
96 }
97
98 // returns theme value
99 // this method should be invoked with readLock locked
100 private static Long getTheme(String widget) {
101 if (!valid) {
102 readLock.unlock();
103 writeLock.lock();
104 try {
105 if (!valid) {
106 // Close old themes.
107 for (Long value : widgetToTheme.values()) {
108 closeTheme(value);
109 }
110 widgetToTheme.clear();
111 valid = true;
112 }
113 } finally {
114 readLock.lock();
115 writeLock.unlock();
116 }
117 }
118
119 // mostly copied from the javadoc for ReentrantReadWriteLock
120 Long theme = widgetToTheme.get(widget);
121 if (theme == null) {
122 readLock.unlock();
123 writeLock.lock();
124 try {
125 theme = getThemeImpl(widget);
126 } finally {
127 readLock.lock();
128 writeLock.unlock();// Unlock write, still hold read
129 }
130 }
131 return theme;
132 }
133
134 private static native void paintBackground(int[] buffer, long theme,
135 int part, int state, int x,
136 int y, int w, int h, int stride);
137
138 public static void paintBackground(int[] buffer, String widget,
|