/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package javax.microedition.lcdui;
/* import javax.microedition.lcdui.KeyConverter; */
import javax.microedition.lcdui.game.GameCanvas;
import com.sun.midp.lcdui.EventConstants;
import com.sun.midp.lcdui.GameMap;
import com.sun.midp.lcdui.GameCanvasLFImpl;
import com.sun.midp.log.Logging;
import com.sun.midp.log.LogChannels;
import com.sun.midp.configurator.Constants;
/**
* The look and feel implementation of <code>Displayable</code> based
* on platform widget.
*/
abstract class DisplayableLFImpl implements DisplayableLF {
/** Static initializer. */
static {
initialize0();
}
/**
* Native class initializer.
*/
private static native void initialize0();
/**
* Creates <code>DisplayableLF</code> for the passed in
* <code>Displayable</code>.
*
* @param d the <code>Displayable</code> object associated with this
* look & feel.
*/
DisplayableLFImpl(Displayable d) {
owner = d;
width = Display.WIDTH;
height = Display.HEIGHT;
}
/**
* Native finalizer to delete native resources.
*/
private native void finalize();
// ************************************************************
// public methods - DisplayableLF interface implementation
// ************************************************************
/**
* Implement public API isShown().
*
* @return true if current <code>DisplayableLF</code> is interactive
* with user.
*/
public boolean lIsShown() {
return (currentDisplay != null) && currentDisplay.isShown(this);
}
/**
* Get the width in pixels this <code>Displayable</code> is using.
*
* @return width of the area available to the application
*/
public int lGetWidth() {
return width;
}
/**
* Get the height in pixels this <code>Displayable</code> is using.
*
* @return height of the area available to the application
*/
public int lGetHeight() {
return height;
}
/**
* Notifies <code>Displayable</code>'s look & feel object of
* a title change.
*
* SYNC NOTE: The caller of this method handles synchronization.
*
* @param oldTitle the old title, or <code>null</code> for no title
* @param newTitle the new title, or <code>null</code> for no title
*/
public void lSetTitle(String oldTitle, String newTitle) {
// No updates are necessary if we are in a full screen mode
if (owner.isInFullScreenMode) {
return;
}
// No update needed if title string is the same object
if (oldTitle == newTitle) {
return;
}
// No update needed if title strings have same content
if (oldTitle != null &&
newTitle != null &&
oldTitle.equals(newTitle)) {
return;
}
// Update only if we have native resource created
if (nativeId != INVALID_NATIVE_ID) {
setTitle0(nativeId, newTitle);
}
}
/**
* Notifies <code>Displayable</code>'s look & feel object of
* a ticker change.
*
* SYNC NOTE: The caller of this method handles synchronization.
*
* @param oldTicker the old ticker, or <code>null</code> for no ticker
* @param newTicker the new ticker, or <code>null</code> for no ticker
*/
public void lSetTicker(Ticker oldTicker, Ticker newTicker) {
// This method will not be called if oldTicker and
// newTicker are the same (that includes both being null)
if (owner.ticker != null) {
owner.ticker.tickerLF.lSetOwner(this);
}
updateNativeTicker(oldTicker, newTicker);
}
/**
* Notifies look & feel object of a command addition
* to the <code>Displayable</code>.
*
* SYNC NOTE: The caller of this method handles synchronization.
*
* @param cmd the command that was added
* @param i the index of the added command in
* <code>Displayable.commands[]</code> array
*/
public void lAddCommand(Command cmd, int i) {
updateCommandSet();
}
/**
* Notifies look &s; feel object of a command removal
* from the <code>Displayable</code>.
*
* SYNC NOTE: The caller of this method handles synchronization.
*
* @param cmd the command that was removed
* @param i the index of the removed command in
* <code>Displayable.commands[]</code> array
*/
public void lRemoveCommand(Command cmd, int i) {
updateCommandSet();
}
/**
* Updates command set if this <code>Displayable</code> is visible.
*
* SYNC NOTE: Caller must hold LCDUILock around this call.
*/
public void updateCommandSet() {
if (state == SHOWN && currentDisplay != null) {
currentDisplay.updateCommandSet();
}
}
/**
* Return the <code>Display</code> instance in which the LF is
* currently shown.
*
* @return the <code>Display</code> instance in which the LF is shown.
* <code>Null</code> if not shown.
*/
public Display lGetCurrentDisplay() {
return currentDisplay;
}
/**
* Called to get the key mask of all the keys that were pressed.
* Implement an interface function for <code>CanvasLF</code> only.
*
* @return keyMask The key mask of all the keys that were pressed.
*/
public int uGetKeyMask() {
synchronized (Display.LCDUILock) {
// don't release currently pressed keys
int savedMaskCopy = stickyKeyMask | currentKeyMask;
stickyKeyMask = 0;
return savedMaskCopy;
}
}
/**
* Set the display instance the <code>Displayable</code> is associated
* with.
* Caller should hold LCDUILock around this call.
*
* @param d <code>Display</code> instance in which this
* <code>DisplayableLF</code> is visible.
* <code>null</code> if this <code>DisplayableLF</code> is
* no longer visible.
*/
public void lSetDisplay(Display d) {
// ASSERT(d == null || currentDisplay == null)
currentDisplay = d;
}
/**
* Return the associated Displayable object.
*
* SYNC NOTE: Since the <code>Displayable</code> and
* <code>DisplayableLFImpl</code> has 1-to-1 mapping, this function
* can be called from in or outside of LCDUILock.
*
* @return the public model object this LF is associated with.
*/
public Displayable lGetDisplayable() {
return owner;
}
/**
* Notifies look & feel object of a full screen mode change.
*
* @param mode <code>true</code>, if canvas should be displayed
* without title, ticker, etc.; <code>false</code> otherwise
*/
public void uSetFullScreenMode(boolean mode) {
boolean requestRepaint = false;
synchronized (Display.LCDUILock) {
if (lIsShown()) {
// currentDisplay is not null when lIsShown is true
currentDisplay.lSetFullScreen(mode);
if (mode) {
setTicker(null);
} else if (owner.ticker != null) {
setTicker(owner.ticker);
}
updateCommandSet();
requestRepaint = true;
}
}
// This may call into app code, so do it outside LCDUILock
uCallSizeChanged(Display.WIDTH, Display.HEIGHT);
// app's sizeChanged has to be called before repaint
synchronized (Display.LCDUILock) {
if (requestRepaint) {
lRequestPaint();
}
}
}
/**
* Prepare to show this LF on physical screen.
* This function will set correct screen mode screen mode
* then call lCallShow.
*/
public void uCallShow() {
boolean copyDefferedSizeChange;
synchronized (Display.LCDUILock) {
// Assure correct screen mode
currentDisplay.lSetFullScreen(owner.isInFullScreenMode);
// display dimentions may change as the resulr of lSetFullScreen
width = Display.WIDTH;
height = Display.HEIGHT;
if (owner.isInFullScreenMode) {
setTicker(null);
} else if (owner.ticker != null) {
setTicker(owner.ticker);
}
copyDefferedSizeChange = defferedSizeChange;
defferedSizeChange = false;
}
if (copyDefferedSizeChange) {
synchronized (Display.calloutLock) {
try {
owner.sizeChanged(width, height);
} catch (Throwable t) {
Display.handleThrowable(t);
}
}
}
synchronized (Display.LCDUILock) {
// Do the internal show preparation
lCallShow();
if (pendingInvalidate || copyDefferedSizeChange) {
lRequestInvalidate();
}
}
}
/**
* Prepare to show this LF on physical screen. This is the
* internal version of showNotify() function as defined in MIDP spec.
* It is called immediately prior to this LF being made visible
* on the display. The LF should load any resource that is
* needed, layout. App's paint() should NOT be called in this function.
* Instead, it should be in the uCallPaint() that will be called on this
* LF shortly after.
*
* This function sets this DisplayableLF to SHOWN state.
*/
void lCallShow() {
// This will suppress drags, repeats and ups until a
// corresponding down is seen.
sawPointerPress = sawKeyPress = false;
if (state != SHOWN) {
// Create native resource first
// since the title and ticker may depend on it
createNativeResource();
}
// Start to paint the ticker
updateNativeTicker(null, owner.ticker);
// set mapping between GameCanvas and DisplayAccess
// set Game key event flag based on value passed in
// GameCanvas constructor.
if (owner instanceof GameCanvas) {
GameMap.registerDisplayAccess(owner, currentDisplay.accessor);
stickyKeyMask = currentKeyMask = 0;
} else {
// set the keymask to -1 when
// the displayable is not a GameCanvas.
stickyKeyMask = currentKeyMask = -1;
}
state = SHOWN;
} // lCallShow()
/**
* Get the current vertical scroll position.
*
* @return int The vertical scroll position on a scale of 0-100
*/
public int getVerticalScrollPosition() {
// SYNC NOTE: return of atomic value
return 0;
}
/**
* Get the current vertical scroll proportion.
*
* @return ing The vertical scroll proportion on a scale of 0-100
*/
public int getVerticalScrollProportion() {
// SYNC NOTE: return of atomic value
return 100;
}
/**
* Remove this <code>Displayable</code> from physical screen.
* This function calls lCallHide after holding LCDUILock
* and sets this DisplayableLF to HIDDEN state.
*/
public void uCallHide() {
synchronized (Display.LCDUILock) {
// Delete native resources and update ticker
lCallHide();
// set state
state = HIDDEN;
}
}
/**
* Some "system modal dialog" takes over physical screen
* buffer and user input now or foreground is lost.
* This function calls lCallHide after holding LCDUILock
* and sets this DisplayableLF to FROZEN state.
*/
public void uCallFreeze() {
synchronized (Display.LCDUILock) {
// Delete native resources and update ticker
lCallHide();
// set state
state = FROZEN;
}
}
/**
* Remove this <code>Displayable</code> from physical screen.
* The <code>Displayable</code> should unload any resource that
* was allocated. It is not required to clean the physical screen
* before this function returns.
*/
void lCallHide() {
if (state == SHOWN) {
updateNativeTicker(owner.ticker, null);
}
// Delete native resources
deleteNativeResource();
}
/**
* Called by the event handler to perform an invalidation of this
* <code>Displayable</code>.
* Subclass should override to perform re-layout.
* Default implementation does nothing.
*/
public void uCallInvalidate() {
synchronized (Display.LCDUILock) {
pendingInvalidate = false;
}
}
/**
* This method is used in repaint, in order to determine the translation
* of the draw coordinates.
*
* @return <code>true</code>, if the scroll responsibility is on
* the native platform.
* <code>false</code>, if the scroll is done at Java level.
*/
public boolean uIsScrollNative() {
// only native form overrides this and returns true
return false;
}
// ************************************************************
// package private methods
// ************************************************************
/**
* Create native resource.
* Instance variable {@link #nativeId nativeId} must be set
* to the id of the new resource.
*/
abstract void createNativeResource();
/**
* Delete native resource.
* Instance variable {@link #nativeId nativeId} is reset
* to {@link #INVALID_NATIVE_ID INVALID_NATIVE_ID}.
*/
void deleteNativeResource() {
if (nativeId != INVALID_NATIVE_ID) {
deleteNativeResource0(nativeId);
nativeId = INVALID_NATIVE_ID;
}
}
/**
* Package private equivalent of sizeChanged().
*
* @param w the new width
* @param h the new height
*
*/
public void uCallSizeChanged(int w, int h) {
boolean copyDefferedSizeChange;
synchronized (Display.LCDUILock) {
if (owner instanceof GameCanvas) {
GameCanvasLFImpl gameCanvasLF =
GameMap.getGameCanvasImpl((GameCanvas)owner);
if (gameCanvasLF != null) {
gameCanvasLF.lCallSizeChanged(w, h);
}
}
// If there is no Display, or if this Displayable is not
// currently visible, we simply record the fact that the
// size has changed
defferedSizeChange = (state != SHOWN);
copyDefferedSizeChange = defferedSizeChange;
/*
* sizeChangeOccurred is a boolean which (when true) indicates
* that sizeChanged() will be called at a later time. So, if it
* is false after calling super(), we go ahead and notify the
* Canvas now, rather than later
*/
width = w;
height = h;
if (!defferedSizeChange) {
lRequestInvalidate();
}
}
if (!copyDefferedSizeChange) {
synchronized (Display.calloutLock) {
try {
owner.sizeChanged(w, h);
} catch (Throwable t) {
Display.handleThrowable(t);
}
}
}
}
/**
* This method notify displayable to scroll its content
*
* @param scrollType scrollType
* @param thumbPosition
*/
public void uCallScrollContent(int scrollType, int thumbPosition) {
// by default nothing to do
}
/**
* <code>Display</code> calls this method on it's current
* <code>Displayable</code>.
* <code>Displayable</code> uses this opportunity to do necessary stuff
* on the graphics context, this includes, paint Ticker, paint Title
* and translate as necessary.
*
* <p>The target Object of this repaint may be some Object
* initially set by this <code>Displayable</code> when the repaint was
* requested - allowing this <code>Displayable</code> to know exactly
* which Object it needs to call to service this repaint,
* rather than potentially querying all of its Objects to
* determine the one(s) which need painting.
*
* SYNC NOTE: The caller of this method handles synchronization.
*
* @param g the graphics context to paint into.
* @param target the target Object of this repaint
*/
public void uCallPaint(Graphics g, Object target) {
// Made obsolete by dsShow, where native title is shown already
}
/**
* Handle a raw key event from <code>Display</code>.
*
* @param type type of event, defined in <code>EventConstants</code>
* @param keyCode code of the key event
*/
public void uCallKeyEvent(int type, int keyCode) {
int eventType = -1;
synchronized (Display.LCDUILock) {
switch (type) {
case EventConstants.PRESSED:
sawKeyPress = true;
eventType = 0;
break;
case EventConstants.RELEASED:
if (sawKeyPress) {
eventType = 1;
}
break;
case EventConstants.REPEATED:
if (sawKeyPress) {
eventType = 2;
}
break;
}
// used later by getKeyMask()
if (currentKeyMask > -1 && eventType != -1) {
if (eventType == 1) {
releaseKeyMask(keyCode);
} else {
// set the mask on key press, repeat or type.
// don't set the mask when a key was released.
setKeyMask(keyCode);
}
}
} // synchronized
// SYNC NOTE: Since we may call into application code,
// we do so outside of LCDUILock
switch (eventType) {
case -1:
return;
case 0:
uCallKeyPressed(keyCode);
break;
case 1:
uCallKeyReleased(keyCode);
break;
case 2:
uCallKeyRepeated(keyCode);
break;
default:
/*
* TBD:
*
* Originally severity level was "ERROR".
* But it was reduced to INFO because
* a). it do not harm to the system
* b). some cases,
* Displayable processes KEY_PRESS events
* (when in system menu) & cleans all related status flag,
* while following KEY_REPEAT & KEY_RELEASE event pairs
* are not processed in the same way and therefore
* this eror messae was printed or them.
*
* As a temporary solution it was decided to disable messages
* insead of additional event filtering.
*/
if (Logging.REPORT_LEVEL <= Logging.INFORMATION) {
Logging.report(Logging.INFORMATION, LogChannels.LC_HIGHUI,
"DisplayableLFImpl: uCallKeyEvent," +
"type=" +type+ " keyCode=" +keyCode);
}
break;
}
} // end of dsKeyEvent()
/**
* Set status of screen rotation
* @param newStatus
* @return
*/
public boolean uSetRotatedStatus(boolean newStatus) {
synchronized (Display.LCDUILock) {
if (newStatus == owner.isRotated) {
return false;
} else {
owner.isRotated = newStatus;
return true;
}
}
}
/**
* Handle a key press.
*
* @param keyCode The key that was pressed
*/
void uCallKeyPressed(int keyCode) { }
/**
* Handle a repeated key press.
*
* @param keyCode The key that was pressed
*/
void uCallKeyRepeated(int keyCode) { }
/**
* Handle a key release.
*
* @param keyCode The key that was released
*/
void uCallKeyReleased(int keyCode) { }
/**
* Called from the event delivery loop when a pointer event is seen.
*
* @param type kind of pointer event
* @param x x-coordinate of pointer event
* @param y y-coordinate of pointer event
*/
public void uCallPointerEvent(int type, int x, int y) {
int eventType = -1;
synchronized (Display.LCDUILock) {
switch (type) {
case EventConstants.PRESSED:
sawPointerPress = true;
eventType = 0;
break;
case EventConstants.RELEASED:
if (sawPointerPress) {
eventType = 1;
}
break;
case EventConstants.DRAGGED:
if (sawPointerPress) {
eventType = 2;
}
break;
}
} // synchronized
// SYNC NOTE: Since we may call into application code,
// we do so outside of LCDUILock
switch (eventType) {
case -1:
return;
case 0:
uCallPointerPressed(x, y);
break;
case 1:
uCallPointerReleased(x, y);
break;
case 2:
uCallPointerDragged(x, y);
break;
default:
// this is an error
break;
}
} // uCallPointerEvent()
/**
* Handle a pointer press event.
*
* @param x The x coordinate of the press
* @param y The y coordinate of the press
*/
void uCallPointerPressed(int x, int y) { }
/**
* Handle a pointer drag event.
*
* @param x The x coordinate of the drag
* @param y The y coordinate of the drag
*/
void uCallPointerDragged(int x, int y) { }
/**
* Handle a pointer release event.
*
* @param x The x coordinate of the release
* @param y The y coordinate of the release
*/
void uCallPointerReleased(int x, int y) { }
/**
* Called to commit any pending user interaction for the current item.
*/
public void lCommitPendingInteraction() { }
/**
* Repaint this <code>Displayable</code>.
*
* @param x The x coordinate of the region to repaint
* @param y The y coordinate of the region to repaint
* @param width The width of the region to repaint
* @param height The height of the region to repaint
* @param target an optional paint target to receive the paint request
* when it returns via uCallPaint()
*/
void lRequestPaint(int x, int y, int width, int height, Object target) {
if (lIsShown()) {
// Note: Display will not let anyone but the current
// Displayable schedule repaints
currentDisplay.repaintImpl(this,
x, y, width, height,
target);
}
}
/**
* Repaints this <code>Displayable</code>.
* This is the same as calling
* repaint(0, 0, width, height, null)
*/
void lRequestPaint() {
lRequestPaint(0, 0, width, height, null);
}
/**
* Request to paint all of this Displayable (without holding a lock).
*/
void uRequestPaint() {
synchronized (Display.LCDUILock) {
lRequestPaint();
}
}
/**
* Repaint the whole <code>Displayable</code>.
*/
void lRequestPaintContents() {
lRequestPaint(0, 0, width, height, null);
}
/**
* Called to schedule an "invalidate" for this <code>Displayable</code>.
* Invalidation is caused by things like size changes, content changes,
* or spontaneous traversal within the <code>Item</code>.
*
* SYNC NOTE: Caller must hold LCDUILock around this call.
*/
void lRequestInvalidate() {
pendingInvalidate = true;
if (state == SHOWN && currentDisplay != null) {
currentDisplay.invalidate();
}
}
// ************************************************************
// private methods
// ************************************************************
/**
* Updates the ticker.
*
* @param oldTicker the old ticker, or <code>null</code> for no ticker
* @param newTicker the new ticker, or <code>null</code> for no ticker
*/
private void updateNativeTicker(Ticker oldTicker, Ticker newTicker) {
// CASES:
// 1. Had an invisible non-null ticker, setting a null ticker
// - We need to set the new ticker. There's no need to re-layout
// or start the new ticker
// 2. Had an invisible non-null ticker, setting a non-null ticker
// - We need to set the new ticker. There's no need to re-layout
// or start the new ticker
// 3. Had a visible non-null ticker, setting a null ticker
// - We need to set the new ticker and re-layout. There's no
// need to start the new ticker.
// 4. Had a null ticker, setting a visible non-null ticker
// - We need to set the new ticker, re-layout, and
// start up the new ticker
// 5. Had a visible non-null ticker, setting a non-null ticker
// - We need to set the new ticker. There's no need to re-layout
if ((owner.isInFullScreenMode) ||
((oldTicker == null) && (newTicker == null))) {
return;
} else {
setTicker(newTicker);
}
}
/**
* Set the ticker.
*
* @param t the new ticker to be set
*/
private void setTicker(Ticker t) {
if (nativeId != INVALID_NATIVE_ID) {
setTicker0(nativeId, (t == null) ? null : t.displayedMessage);
}
}
/**
* Notification that the ticker has changed.
* This method is called from <code>TickerLFImpl</code>.
*
* @param t the ticker associated with the TickerLFImpl
*/
void tickerTextChanged(Ticker t) {
if (owner.ticker != t) {
return;
}
setTicker(t);
}
/**
* Called to set key mask of all the keys that were pressed.
*
* @param keyCode The key code to set the key mask.
*/
private void setKeyMask(int keyCode) {
/*
// Shouldn't run into this case.
if (paintSuspended || !hasForeground) {
return;
}
*/
// set the mask of keys pressed
switch (KeyConverter.getGameAction(keyCode)) {
case Canvas.UP:
stickyKeyMask = stickyKeyMask | GameCanvas.UP_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.UP_PRESSED;
break;
case Canvas.DOWN:
stickyKeyMask = stickyKeyMask | GameCanvas.DOWN_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.DOWN_PRESSED;
break;
case Canvas.LEFT:
stickyKeyMask = stickyKeyMask | GameCanvas.LEFT_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.LEFT_PRESSED;
break;
case Canvas.RIGHT:
stickyKeyMask = stickyKeyMask | GameCanvas.RIGHT_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.RIGHT_PRESSED;
break;
case Canvas.FIRE:
stickyKeyMask = stickyKeyMask | GameCanvas.FIRE_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.FIRE_PRESSED;
break;
case Canvas.GAME_A:
stickyKeyMask = stickyKeyMask | GameCanvas.GAME_A_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.GAME_A_PRESSED;
break;
case Canvas.GAME_B:
stickyKeyMask = stickyKeyMask | GameCanvas.GAME_B_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.GAME_B_PRESSED;
break;
case Canvas.GAME_C:
stickyKeyMask = stickyKeyMask | GameCanvas.GAME_C_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.GAME_C_PRESSED;
break;
case Canvas.GAME_D:
stickyKeyMask = stickyKeyMask | GameCanvas.GAME_D_PRESSED;
currentKeyMask = currentKeyMask | GameCanvas.GAME_D_PRESSED;
}
}
/**
* Called to release key mask of all the keys that were release.
*
* @param keyCode The key code to release the key mask.
*/
private void releaseKeyMask(int keyCode) {
/*
// Leave this case to dsHide and dsFreeze()
if (paintSuspended || !hasForeground) {
currentKeyMask = 0;
return;
}
*/
// set the mask of keys pressed
switch (KeyConverter.getGameAction(keyCode)) {
case Canvas.UP:
currentKeyMask = currentKeyMask & ~ GameCanvas.UP_PRESSED;
break;
case Canvas.DOWN:
currentKeyMask = currentKeyMask & ~ GameCanvas.DOWN_PRESSED;
break;
case Canvas.LEFT:
currentKeyMask = currentKeyMask & ~ GameCanvas.LEFT_PRESSED;
break;
case Canvas.RIGHT:
currentKeyMask = currentKeyMask & ~ GameCanvas.RIGHT_PRESSED;
break;
case Canvas.FIRE:
currentKeyMask = currentKeyMask & ~ GameCanvas.FIRE_PRESSED;
break;
case Canvas.GAME_A:
currentKeyMask = currentKeyMask & ~ GameCanvas.GAME_A_PRESSED;
break;
case Canvas.GAME_B:
currentKeyMask = currentKeyMask & ~ GameCanvas.GAME_B_PRESSED;
break;
case Canvas.GAME_C:
currentKeyMask = currentKeyMask & ~ GameCanvas.GAME_C_PRESSED;
break;
case Canvas.GAME_D:
currentKeyMask = currentKeyMask & ~ GameCanvas.GAME_D_PRESSED;
}
}
// ************************************************************
// public member variables - NOT ALLOWED in this class
// ************************************************************
// ************************************************************
// protected member variables - NOT ALLOWED in this class
// ************************************************************
// ************************************************************
// package private member variables
// ************************************************************
/**
* The current <code>Display</code> object.
*/
Display currentDisplay;
/**
* Width and height available to the <code>Displayable</code>.
*/
int width, height;
/**
* <code>True</code>, indicates that before being painted, this
* <code>Displayable</code> should be notified that its size has
* changed via uCallSizeChanged().
*/
boolean defferedSizeChange = true;
/**
* The owner of this view.
*/
Displayable owner;
/**
* The <code>MidpDisplayable*</code> of this <code>Displayable</code>
* while visible.
* <code>INVALID_NATIVE_ID</code> if no native resource has been created.
*/
int nativeId = INVALID_NATIVE_ID;
/**
* Version number of this LF's data model.
* Should be updated when public data model has changed and
* be passed to native peer if visible. Native peer tags
* all its native events with this version to prevent user
* actions on obsolete copy of the data in native.
*/
int modelVersion; // = 0
// ************************************************************
// private member variables
// ************************************************************
// No events will be delivered while these are false.
// This is our attempt at avoiding spurious up events.
/**
* <code>True</code>, if a pointer press is in progress.
*/
boolean sawPointerPress;
/**
* <code>True</code>, if a key press is in progress.
*/
boolean sawKeyPress;
/** current state of DisplayableLF (HIDDEN, SHOWN, or FROZEN) */
int state; // = HIDDEN (0)
/**
* Stores key code of the current key pressed at least once.
*/
// caters to the GameCanvas.getKeyStats() latching behavior.
// This latched state is cleared when getKeyStats() is called.
private int stickyKeyMask;
/**
* Stores key code of the current key is currently down.
*/
// sets the key to 1 when the key is currently down
private int currentKeyMask;
/**
* Used to indicate the invalidate is needed
*/
boolean pendingInvalidate;
// ************************************************************
// Static initializer, constructor
// ************************************************************
/**
* Used as an index into the viewport[], for the x origin.
*/
final static int X = 0;
/**
* Used as an index into the viewport[], for the y origin.
*/
final static int Y = 1;
/**
* Used as an index into the viewport[], for the width.
*/
final static int WIDTH = 2;
/**
* Used as an index into the viewport[], for the height.
*/
final static int HEIGHT = 3;
/**
* Uninitialized native resource id value.
*/
final static int INVALID_NATIVE_ID = 0;
/** hidden state of DisplayableLF */
final static int HIDDEN = 0;
/** shown state of DisplayableLF */
final static int SHOWN = 1;
/** frozen state of DisplayableLF */
final static int FROZEN = 2;
// ************************************************************
// Native methods
// ***********************************************************
/**
* Free the native resource of this <code>Displayable</code> and hide
* it from display.
*
* @param nativeId native resource id
*
* @exception OutOfMemoryException - if out of native resource
*/
private native void deleteNativeResource0(int nativeId);
/**
* Change the title of native resource.
*
* @param nativeId native resource id (<code>MidpDisplayable *</code>)
* @param title New title string. Can be <code>null</code>.
*/
private static native void setTitle0(int nativeId, String title);
/**
* Set text of the native ticker.
*
* @param nativeId native resource id.
* @param text text used. Null if the ticker should stop.
*/
private static native void setTicker0(int nativeId, String text);
} // DisplayableLFImpl
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