Source Code Cross Referenced for DisplayAccess.java in  » 6.0-JDK-Modules » j2me » com » sun » midp » lcdui » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.midp.lcdui 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *   
003:         *
004:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation.
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt).
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions.
025:         */
026:
027:        package com.sun.midp.lcdui;
028:
029:        import javax.microedition.lcdui.Display;
030:        import javax.microedition.lcdui.Image;
031:        import javax.microedition.lcdui.Displayable;
032:
033:        /**
034:         * Public interface for an object that is used to provide internal access
035:         * to a Display object, across package boundaries.  The object implements
036:         * this interface, and is created inside the same package as Display,  so
037:         * that it has access to private instance data of Display as necessary.
038:         */
039:        public interface DisplayAccess {
040:            /**
041:             * Get the Display object that is associated with this DisplayAccess.
042:             * @return Display The Display object.
043:             */
044:            Display getDisplay();
045:
046:            /**
047:             * Called to get current display width.
048:             * @return Display width.
049:             */
050:            public int getDisplayWidth();
051:
052:            /**
053:             * Called to get current display height.
054:             * @return Display height.
055:             */
056:            public int getDisplayHeight();
057:
058:            /** Called to get the display to request the foreground. */
059:            public void requestForeground();
060:
061:            // API's for accessing Display from Games Package
062:
063:            /**
064:             * Called to get key mask of all the keys that were pressed.
065:             * @return keyMask  The key mask of all the keys that were pressed.
066:             */
067:            int getKeyMask();
068:
069:            /**
070:             * Flushes the entire off-screen buffer to the display.
071:             * @param screen The Displayable 
072:             * @param offscreen_buffer The image buffer 
073:             * @param x The left edge of the region to be flushed
074:             * @param y The top edge of the region to be flushed
075:             * @param width The width of the region to be flushed
076:             * @param height The height of the region to be flushed
077:             */
078:            void flush(Displayable screen, Image offscreen_buffer, int x,
079:                    int y, int width, int height);
080:
081:            /**
082:             * Called when the system needs to temporarily prevent the application
083:             * from painting the screen.  The primary use of this method is to allow
084:             * a system service to temporarily utilize the screen, e.g. to provide
085:             * input method or abstract command processing.
086:             *
087:             * This method should prevent application-based paints (i.e. those
088:             * generated by Canvas.repaint(), Canvas.serviceRepaints() or some
089:             * internal paint method on another kind of Displayable) from changing
090:             * the contents of the screen in any way.
091:             */
092:            // void suspendPainting();
093:            /**
094:             * Called when the system is ready to give up its control over the
095:             * screen.  The application should receive a request for a full
096:             * repaint when this is called, and is subsequently free to process
097:             * paint events from Canvas.repaint(), Canvas.serviceRepaints() or
098:             * internal paint methods on Displayable.
099:             */
100:            // void resumePainting();
101:            /**
102:             * Get the class name of the MIDlet that owns this display.
103:             * DisplayAccess I/F method.
104:             *
105:             * @return name of the MIDlet that owns this Display
106:             */
107:            public String getNameOfOwner();
108:
109:            /**
110:             * Get the ID of this display.
111:             *
112:             * @return Display ID
113:             */
114:            public int getDisplayId();
115:
116:            /**
117:             * Sets the ID of this display.
118:             * Shall be called only from DisplayContainer.addDisplay() during 
119:             * Display construction and registration in the container.
120:             *
121:             * @param newId new ID for Display associated with this DisplayAccess
122:             */
123:            public void setDisplayId(int newId);
124:
125:            /**
126:             * Get the DisplayEventConsumer associated with this display.
127:             *
128:             * @return Consumer of midlet events that go through this display
129:             */
130:            public DisplayEventConsumer getDisplayEventConsumer();
131:
132:            /**
133:             * Get the ForegroundEventConsumer associated with this display.
134:             *
135:             * @return Consumer of foreground events that go through this display
136:             */
137:            public ForegroundEventConsumer getForegroundEventConsumer();
138:        }
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