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java.lang.Object
|
+--javax.microedition.lcdui.Displayable
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+--javax.microedition.lcdui.Canvas
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+--javax.microedition.lcdui.game.GameCanvas
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+--net.rim.device.api.lcdui.game.BlackBerryGameCanvas
This class extends the functionality of the GameCanvas class to include
full touch support.
Classes inheriting from this class can override the touchEvent(net.rim.device.api.ui.TouchEvent) method to receive
TouchEvent messages.
The BlackBerryGameCanvas class implements Controllable and can be queried
to retrieve BlackBerry-specific Controls. For instance, on devices which support a virtual keyboard,
getControl(String) may return a VirtualKeyboardControl
object.
TouchEvent,
Field.touchEvent| Field Summary |
| Fields inherited from class javax.microedition.lcdui.game.GameCanvas |
DOWN_PRESSED, FIRE_PRESSED, GAME_A_PRESSED, GAME_B_PRESSED, GAME_C_PRESSED, GAME_D_PRESSED, LEFT_PRESSED, RIGHT_PRESSED, UP_PRESSED |
| Fields inherited from class javax.microedition.lcdui.Canvas |
DOWN, FIRE, GAME_A, GAME_B, GAME_C, GAME_D, KEY_NUM0, KEY_NUM1, KEY_NUM2, KEY_NUM3, KEY_NUM4, KEY_NUM5, KEY_NUM6, KEY_NUM7, KEY_NUM8, KEY_NUM9, KEY_POUND, KEY_STAR, LEFT, RIGHT, UP |
| Constructor Summary | ||
protected |
BlackBerryGameCanvas(boolean suppressKeyEvents)
Creates a new instance of a BlackBerryGameCanvas. |
|
| Method Summary | ||
Control |
getControl(String controlType)
Obtain the object that implements the specified Control interface. |
|
Control[] |
getControls()
Obtain the collection of Controls
from the object that implements this interface. |
|
void |
touchEvent(TouchEvent message)
Indicates a touch event. |
|
| Methods inherited from class javax.microedition.lcdui.game.GameCanvas |
flushGraphics, flushGraphics, getGraphics, getKeyStates, paint |
| Methods inherited from class javax.microedition.lcdui.Canvas |
getGameAction, getKeyCode, getKeyName, hasPointerEvents, hasPointerMotionEvents, hasRepeatEvents, hideNotify, isDoubleBuffered, keyPressed, keyReleased, keyRepeated, pointerDragged, pointerPressed, pointerReleased, repaint, repaint, serviceRepaints, setFullScreenMode, showNotify, sizeChanged |
| Methods inherited from class javax.microedition.lcdui.Displayable |
addCommand, getHeight, getTicker, getTitle, getWidth, isShown, removeCommand, setCommandListener, setTicker, setTitle |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
protected BlackBerryGameCanvas(boolean suppressKeyEvents)
GameCanvas.GameCanvas(boolean)| Method Detail |
public Control getControl(String controlType)
ControllableControl interface.
If the specified Control interface is not supported
then null is returned.
If the Controllable supports multiple objects that
implement the same specified Control interface, only
one of them will be returned. To obtain all the
Control's of that type, use the getControls
method and check the list for the requested type.
IllegalArgumentException - Thrown if controlType
is null.javax.microedition.media.Controllable.getControl(String)public Control[] getControls()
ControllableControls
from the object that implements this interface.
Since a single object can implement multiple
Control interfaces, it's necessary
to check each object against different Control
types. For example:
Controllable controllable;
:
Control cs[];
cs = controllable.getControls();
for (int i = 0; i < cs.length; i++) {
if (cs[i] instanceof ControlTypeA)
doSomethingA();
if (cs[i] instanceof ControlTypeB)
doSomethingB();
// etc.
}
The list of Control objects returned
will not contain any duplicates. And the list will not
change over time.
If no Control is supported, a zero length
array is returned.
javax.microedition.media.Controllable.getControls()public void touchEvent(TouchEvent message)
message - TouchEvent object containing various input parameters
including the event type and touch coordinates.
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Copyright 1999-2009 Research In Motion Limited. 295 Phillip Street, Waterloo, Ontario, Canada, N2L 3W8. All Rights Reserved.
Copyright 1993-2003 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
Copyright 2002-2003 Nokia Corporation All Rights Reserved.
Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries.