//#condition MUJMAIL_TOUCH_SCR/*MujMail - Simple mail client for J2MECopyright (C) 2008 David Hauzar <david.hauzar.mujmail@gmail.com>This program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2 of the License, or(at your option) any later version.This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */package mujmail.pointer;import javax.microedition.lcdui.Canvas;/** * Calls appropriate methods on listener when a mujMail pointer event occurs. *  * Transforms java pointer events to mujMail pointer events, calls method * {@link mujmail.pointer.MujMailPointerEvent#handleEvent(mujmail.pointer.MujMailPointerEventListener)} * on the event. This method hereafter should call appropriate methods on * listener. * * User of this class must ensure calling of methods corresponding to java pointer * events (pointerPressed etc.) on this object. *  * @see MujMailPointerEvent *  * @author David Hauzar */public class MujMailPointerEventProducer {    private final MujMailPointerEventListener listener;    private final int screenWidth;    private final int screenHeight;    /**     * Creates new instance of MujMailPointerEventProducer.     *      * @param listener the object that's methods will be called when mujmail     *  event occurrs     * @param screenWidth the width of the screen of the display of the phone     * @param screenHeight the height of the screen of the display of the phone     */    public MujMailPointerEventProducer(MujMailPointerEventListener listener, int screenWidth, int screenHeight) {        this.listener = listener;        this.screenHeight = screenHeight;        this.screenWidth = screenWidth;    }        /**     * Transforms pointer pressed java event to mujmail pointer event and handle     * this event. Typically calls appropriate method on listener.     *      * This method must be called by owner by this object when pointerPressed     * java pointer event occurrs.     * @param x the x coordinate of the pointer     * @param y the y coordinate of the pointer     *      * @see Canvas#pointerPressed     */    public void pointerPressed(int x, int y) {        transformPointerPressed(x, y).handleEvent(listener);    }        private boolean isOnLeftSide(int x) {        if (x <= screenWidth / 4) {            return true;        } else {            return false;        }    }        private boolean isOnRightSide(int x) {        if (x >= (screenWidth / 4)*3) {            return true;        } else {            return false;        }    }        private boolean isDown(int y) {        if (y >= (screenHeight / 4)*3) {            return true;        } else {            return false;        }    }        private boolean isUP(int y) {        if (y <= screenHeight / 4) {            return true;        } else {            return false;        }    }        /**     * Transforms pointer pressed java event to mujmail pointer event.     *      * @param x the x coordinate of the pointer.     * @param y the y coordinate of the pointer.     * @return mujmail event transformed from pointer pressed event.     */    private MujMailPointerEvent transformPointerPressed(int x, int y) {        if (isOnLeftSide(x) && !isDown(y) && !isUP(y)) {            // on the left but not in the corners            return MujMailPointerEvent.LEFT;        }                if (isOnRightSide(x) && !isDown(y) && !isUP(y)) {            // on the right but not in the corners            return MujMailPointerEvent.RIGHT;        }                if (isUP(y) && !isOnLeftSide(x) && !isOnRightSide(x)) {            // up but not in the corners            System.out.println("up");            return MujMailPointerEvent.UP;        }                if (isDown(y) && !isOnLeftSide(x) && !isOnRightSide(x)) {            // down but not in the corners            return MujMailPointerEvent.DOWN;        }                if (!isDown(y) && !isUP(y) && !isOnLeftSide(x) && !isOnRightSide(x)) {            // on the center            return MujMailPointerEvent.FIRE;        }                        if (isDown(y) && (isOnLeftSide(x) || isOnRightSide(x)) ) {            // bottom corners            return MujMailPointerEvent.DOWN_QUARTERS_STAR;        }                if (isUP(y) && (isOnLeftSide(x) || isOnRightSide(x)) ) {            // up corners            return MujMailPointerEvent.UP_QUARTERS_SLASH;        }                return MujMailPointerEvent.NO_ACTION;    }}