12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.swing;
27
28 import java.awt.BorderLayout;
29 import java.awt.Color;
30 import java.awt.Component;
31 import java.awt.Container;
32 import java.awt.EventQueue;
33 import java.awt.Graphics;
34 import java.awt.Graphics2D;
35 import java.awt.Rectangle;
36 import java.awt.image.BufferedImage;
37 import java.awt.image.DataBufferInt;
38 import java.security.AccessController;
39
40 import javax.swing.JLayeredPane;
41 import javax.swing.JPanel;
42 import javax.swing.JRootPane;
43 import javax.swing.LayoutFocusTraversalPolicy;
44 import javax.swing.RootPaneContainer;
45
46 import sun.awt.LightweightFrame;
47 import sun.security.action.GetPropertyAction;
48
49 /**
50 * The frame serves as a lightweight container which paints its content
51 * to an offscreen image and provides access to the image's data via the
52 * {@link LightweightContent} interface. Note, that it may not be shown
53 * as a standalone toplevel frame. Its purpose is to provide functionality
54 * for lightweight embedding.
55 *
56 * @author Artem Ananiev
57 * @author Anton Tarasov
63 private LightweightContent content;
64
65 private Component component;
66 private JPanel contentPane;
67
68 private BufferedImage bbImage;
69
70 /**
71 * {@code copyBufferEnabled}, true by default, defines the following strategy.
72 * A duplicating (copy) buffer is created for the original pixel buffer.
73 * The copy buffer is synchronized with the original buffer every time the
74 * latter changes. {@code JLightweightFrame} passes the copy buffer array
75 * to the {@link LightweightContent#imageBufferReset} method. The code spot
76 * which synchronizes two buffers becomes the only critical section guarded
77 * by the lock (managed with the {@link LightweightContent#paintLock()},
78 * {@link LightweightContent#paintUnlock()} methods).
79 */
80 private boolean copyBufferEnabled;
81 private int[] copyBuffer;
82
83 /**
84 * Constructs a new, initially invisible {@code JLightweightFrame}
85 * instance.
86 */
87 public JLightweightFrame() {
88 super();
89 copyBufferEnabled = "true".equals(AccessController.
90 doPrivileged(new GetPropertyAction("jlf.copyBufferEnabled", "true")));
91
92 add(rootPane, BorderLayout.CENTER);
93 setFocusTraversalPolicy(new LayoutFocusTraversalPolicy());
94 if (getGraphicsConfiguration().isTranslucencyCapable()) {
95 setBackground(new Color(0, 0, 0, 0));
96 }
97 }
98
99 /**
100 * Sets the {@link LightweightContent} instance for this frame.
101 * The {@code JComponent} object returned by the
102 * {@link LightweightContent#getComponent()} method is immediately
103 * added to the frame's content pane.
104 *
105 * @param content the {@link LightweightContent} instance
106 */
107 public void setContent(LightweightContent content) {
108 this.content = content;
109 this.component = content.getComponent();
110
111 initInterior();
112 }
113
114 @Override
115 public Graphics getGraphics() {
116 if (bbImage == null) return null;
117
118 Graphics2D g = bbImage.createGraphics();
119 g.setBackground(getBackground());
120 g.setColor(getForeground());
121 g.setFont(getFont());
122 return g;
123 }
124
125 /**
126 * {@inheritDoc}
127 *
128 * @see LightweightContent#focusGrabbed()
129 */
130 @Override
185 if (copyBufferEnabled) {
186 syncCopyBuffer(false, clip.x, clip.y, clip.width, clip.height);
187 }
188 content.imageUpdated(clip.x, clip.y, clip.width, clip.height);
189 }
190 });
191 } finally {
192 if (!copyBufferEnabled) {
193 content.paintUnlock();
194 }
195 }
196 }
197 @Override
198 protected boolean isPaintingOrigin() {
199 return true;
200 }
201 };
202 contentPane.setLayout(new BorderLayout());
203 contentPane.add(component);
204 setContentPane(contentPane);
205 }
206
207 @SuppressWarnings("deprecation")
208 @Override public void reshape(int x, int y, int width, int height) {
209 super.reshape(x, y, width, height);
210
211 if (width == 0 || height == 0) {
212 return;
213 }
214 if (!copyBufferEnabled) {
215 content.paintLock();
216 }
217 try {
218 if ((bbImage == null) || (width != bbImage.getWidth()) || (height != bbImage.getHeight())) {
219 boolean createBB = true;
220 int newW = width;
221 int newH = height;
222 if (bbImage != null) {
223 int oldW = bbImage.getWidth();
224 int oldH = bbImage.getHeight();
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.swing;
27
28 import java.awt.BorderLayout;
29 import java.awt.Color;
30 import java.awt.Component;
31 import java.awt.Container;
32 import java.awt.Dimension;
33 import java.awt.EventQueue;
34 import java.awt.Graphics;
35 import java.awt.Graphics2D;
36 import java.awt.Rectangle;
37 import java.awt.event.ComponentEvent;
38 import java.awt.event.ComponentListener;
39 import java.awt.event.ContainerAdapter;
40 import java.awt.event.ContainerEvent;
41 import java.awt.event.ContainerListener;
42 import java.awt.image.BufferedImage;
43 import java.awt.image.DataBufferInt;
44 import java.beans.PropertyChangeEvent;
45 import java.beans.PropertyChangeListener;
46 import java.security.AccessController;
47
48 import javax.swing.JLayeredPane;
49 import javax.swing.JPanel;
50 import javax.swing.JRootPane;
51 import javax.swing.LayoutFocusTraversalPolicy;
52 import javax.swing.RootPaneContainer;
53
54 import sun.awt.LightweightFrame;
55 import sun.security.action.GetPropertyAction;
56
57 /**
58 * The frame serves as a lightweight container which paints its content
59 * to an offscreen image and provides access to the image's data via the
60 * {@link LightweightContent} interface. Note, that it may not be shown
61 * as a standalone toplevel frame. Its purpose is to provide functionality
62 * for lightweight embedding.
63 *
64 * @author Artem Ananiev
65 * @author Anton Tarasov
71 private LightweightContent content;
72
73 private Component component;
74 private JPanel contentPane;
75
76 private BufferedImage bbImage;
77
78 /**
79 * {@code copyBufferEnabled}, true by default, defines the following strategy.
80 * A duplicating (copy) buffer is created for the original pixel buffer.
81 * The copy buffer is synchronized with the original buffer every time the
82 * latter changes. {@code JLightweightFrame} passes the copy buffer array
83 * to the {@link LightweightContent#imageBufferReset} method. The code spot
84 * which synchronizes two buffers becomes the only critical section guarded
85 * by the lock (managed with the {@link LightweightContent#paintLock()},
86 * {@link LightweightContent#paintUnlock()} methods).
87 */
88 private boolean copyBufferEnabled;
89 private int[] copyBuffer;
90
91 private PropertyChangeListener layoutSizeListener;
92
93 /**
94 * Constructs a new, initially invisible {@code JLightweightFrame}
95 * instance.
96 */
97 public JLightweightFrame() {
98 super();
99 copyBufferEnabled = "true".equals(AccessController.
100 doPrivileged(new GetPropertyAction("jlf.copyBufferEnabled", "true")));
101
102 add(rootPane, BorderLayout.CENTER);
103 setFocusTraversalPolicy(new LayoutFocusTraversalPolicy());
104 if (getGraphicsConfiguration().isTranslucencyCapable()) {
105 setBackground(new Color(0, 0, 0, 0));
106 }
107 }
108
109 /**
110 * Sets the {@link LightweightContent} instance for this frame.
111 * The {@code JComponent} object returned by the
112 * {@link LightweightContent#getComponent()} method is immediately
113 * added to the frame's content pane.
114 *
115 * @param content the {@link LightweightContent} instance
116 */
117 public void setContent(final LightweightContent content) {
118 if (content == null) {
119 System.err.println("JLightweightFrame.setContent: content may not be null!");
120 return;
121 }
122 this.content = content;
123 this.component = content.getComponent();
124
125 layoutSizeListener = new PropertyChangeListener() {
126 @Override
127 public void propertyChange(PropertyChangeEvent e) {
128 Dimension d = (Dimension)e.getNewValue();
129
130 if ("preferredSize".equals(e.getPropertyName())) {
131 content.preferredSizeChanged(d.width, d.height);
132
133 } else if ("maximumSize".equals(e.getPropertyName())) {
134 content.maximumSizeChanged(d.width, d.height);
135
136 } else if ("minimumSize".equals(e.getPropertyName())) {
137 content.minimumSizeChanged(d.width, d.height);
138 }
139 }
140 };
141 this.component.addPropertyChangeListener("preferredSize", layoutSizeListener);
142 Dimension d = this.component.getPreferredSize();
143 content.preferredSizeChanged(d.width, d.height);
144
145 this.component.addPropertyChangeListener("maximumSize", layoutSizeListener);
146 d = this.component.getMaximumSize();
147 content.maximumSizeChanged(d.width, d.height);
148
149 this.component.addPropertyChangeListener("minimumSize", layoutSizeListener);
150 d = this.component.getMinimumSize();
151 content.minimumSizeChanged(d.width, d.height);
152
153 initInterior();
154 }
155
156 @Override
157 public Graphics getGraphics() {
158 if (bbImage == null) return null;
159
160 Graphics2D g = bbImage.createGraphics();
161 g.setBackground(getBackground());
162 g.setColor(getForeground());
163 g.setFont(getFont());
164 return g;
165 }
166
167 /**
168 * {@inheritDoc}
169 *
170 * @see LightweightContent#focusGrabbed()
171 */
172 @Override
227 if (copyBufferEnabled) {
228 syncCopyBuffer(false, clip.x, clip.y, clip.width, clip.height);
229 }
230 content.imageUpdated(clip.x, clip.y, clip.width, clip.height);
231 }
232 });
233 } finally {
234 if (!copyBufferEnabled) {
235 content.paintUnlock();
236 }
237 }
238 }
239 @Override
240 protected boolean isPaintingOrigin() {
241 return true;
242 }
243 };
244 contentPane.setLayout(new BorderLayout());
245 contentPane.add(component);
246 setContentPane(contentPane);
247
248 contentPane.addContainerListener(new ContainerAdapter() {
249 @Override
250 public void componentRemoved(ContainerEvent e) {
251 Component c = JLightweightFrame.this.component;
252 if (e.getChild() == c) {
253 c.removePropertyChangeListener(layoutSizeListener);
254 }
255 }
256 });
257 }
258
259 @SuppressWarnings("deprecation")
260 @Override public void reshape(int x, int y, int width, int height) {
261 super.reshape(x, y, width, height);
262
263 if (width == 0 || height == 0) {
264 return;
265 }
266 if (!copyBufferEnabled) {
267 content.paintLock();
268 }
269 try {
270 if ((bbImage == null) || (width != bbImage.getWidth()) || (height != bbImage.getHeight())) {
271 boolean createBB = true;
272 int newW = width;
273 int newH = height;
274 if (bbImage != null) {
275 int oldW = bbImage.getWidth();
276 int oldH = bbImage.getHeight();
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