// Copyright 2002 Nokia Corporation. // // THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER, // EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS // FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE // OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE // ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO // OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR // SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE // RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT // OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED // BY THIRD PARTIES // // Furthermore, information provided in this source code is preliminary, // and may be changed substantially prior to final release. Nokia Corporation // retains the right to make changes to this source code at // any time, without notice. This source code is provided for informational // purposes only. // // Nokia and Nokia Connecting People are registered trademarks of Nokia// Corporation.// Java and all Java-based marks are trademarks or registered trademarks of// Sun Microsystems, Inc.// Other product and company names mentioned herein may be trademarks or// trade names of their respective owners.// // A non-exclusive, non-transferable, worldwide, limited license is hereby // granted to the Licensee to download, print, reproduce and modify the // source code. The licensee has the right to market, sell, distribute and // make available the source code in original or modified form only when // incorporated into the programs developed by the Licensee. No other // license, express or implied, by estoppel or otherwise, to any other // intellectual property rights is granted herein.// unnamed packageimport javax.microedition.lcdui.*;import javax.microedition.media.*;import javax.microedition.media.control.*;import java.io.IOException;class CameraCanvas    extends Canvas    implements CommandListener{    private final CameraMIDlet midlet;    private final Command exitCommand;    private Command captureCommand = null;    private Player player = null;    private VideoControl videoControl = null;    private boolean active = false;    // Two strings for displaying error messages    private String message1 = null;    private String message2 = null;    CameraCanvas(CameraMIDlet midlet)    {        this.midlet = midlet;        exitCommand = new Command("Exit", Command.EXIT, 1);        addCommand(exitCommand);        setCommandListener(this);        try        {            player = Manager.createPlayer("capture://video");            player.realize();                    // Grab the video control and set it to the current display.            videoControl = (VideoControl)(player.getControl("VideoControl"));            if (videoControl == null)            {                discardPlayer();                message1 = "Unsupported:";                message2 = "Can't get video control";            }            else            {                videoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO,                                             this);                // centre video, letting it be clipped if it's too big                int canvasWidth = getWidth();                int canvasHeight = getHeight();                int displayWidth = videoControl.getDisplayWidth();                int displayHeight = videoControl.getDisplayHeight();                int x = (canvasWidth - displayWidth) / 2;                int y = (canvasHeight - displayHeight) / 2;                videoControl.setDisplayLocation(x, y);                                captureCommand = new Command("Capture", Command.SCREEN, 1);                addCommand(captureCommand);            }        }        catch (IOException ioe)        {            discardPlayer();            message1 = "IOException:";            message2 = ioe.getMessage();        }        catch (MediaException me)        {            discardPlayer();            message1 = "MediaException:";            message2 = me.getMessage();        }        catch (SecurityException se)        {            discardPlayer();            message1 = "SecurityException";            message2 = se.getMessage();        }    }    // Called in case of exception to make sure invalid players are closed    private void discardPlayer()    {        if (player != null)        {            player.close();            player = null;        }        videoControl = null;    }        public void paint(Graphics g)    {        g.setColor(0x00FFFF00);   // yellow        g.fillRect(0, 0, getWidth(), getHeight());        if (message1 != null)        {            g.setColor(0x00000000);   // black            g.drawString(message1, 1, 1, Graphics.TOP | Graphics.LEFT);            g.drawString(message2, 1, 1 + g.getFont().getHeight(),                                         Graphics.TOP | Graphics.LEFT);        }    }    synchronized void start()    {        if ((player != null) && !active)        {            try            {                player.start();                videoControl.setVisible(true);            }            catch (MediaException me)            {                message1 = "Media exception:";                message2 = me.getMessage();            }            catch (SecurityException se)            {                message1 = "SecurityException";                message2 = se.getMessage();            }            active = true;        }    }    synchronized void stop()    {        if ((player != null) && active)        {            try            {                videoControl.setVisible(false);                player.stop();            }            catch (MediaException me)            {                message1 = "MediaException:";                message2 = me.getMessage();            }            active = false;        }    }    public void commandAction(Command c, Displayable d)    {        if (c == exitCommand)        {            midlet.cameraCanvasExit();        }        else if (c == captureCommand)        {            takeSnapshot();        }    }    public void keyPressed(int keyCode)    {        if (getGameAction(keyCode) == FIRE)        {            takeSnapshot();        }    }    private void takeSnapshot()    {        if (player != null)        {            try            {                byte[] pngImage = videoControl.getSnapshot(null);                midlet.cameraCanvasCaptured(pngImage);            }            catch (MediaException me)            {                message1 = "MediaException:";                message2 = me.getMessage();            }        }    }}