public class IlvZoomInAccelerator extends IlvAccelerator
IlvZoomInAccelerator is used to allow the user to zoom into
the manager.
The following code example shows how to use
IlvZoomInAccelerator in a simple Java application:
// Install the scroll down accelerator
manager.addAccelerator(
new IlvZoomInAccelerator(KeyEvent.KEY_PRESSED,
KeyEvent.VK_UNDEFINED,
'+', 0, true));
All input events are handled by means of interactors or accelerators. Accelerators,
such as IlvZoomInAccelerator, are subclasses of IlvAccelerator.
Each accelerator listens for a specific key event in the manager. For information on
handling events in a manager, see
Handling Events.
The following code examples show how to handle user events:
| Constructor and Description |
|---|
IlvZoomInAccelerator(int type,
int keyCode,
char keyChar,
int modifiers,
boolean consumeEvents)
Creates an
IlvZoomInAccelerator. |
IlvZoomInAccelerator(int type,
int keyCode,
int modifiers)
Creates an
IlvZoomInAccelerator. |
IlvZoomInAccelerator(int type,
int keyCode,
int modifiers,
boolean consumeEvents)
Creates an
IlvZoomInAccelerator. |
| Modifier and Type | Method and Description |
|---|---|
double |
getZoomFactor()
Returns the zoom factor.
|
protected boolean |
handleEvent(IlvManagerView v)
Processes the event.
|
void |
setZoomFactor(double zoomFactor)
Changes the zoom factor.
|
CtrlChar, getEventType, getKeyChar, getKeyCode, getModifier, isConsumeEvents, setConsumeEventspublic IlvZoomInAccelerator(int type,
int keyCode,
char keyChar,
int modifiers,
boolean consumeEvents)
IlvZoomInAccelerator.
You can specify the associated key either by a key code or by a key
character. Key codes are useful for function keys while
key characters are more useful for regular characters
'a'...'z','A'...'Z','0'...'9','+','-', etc.
which, depending on the keyboard layout may produce different key codes.
For instance, on a US keyboard, the character '+' has the same key code
as the character '=', while on a German keyboard, the character '+' has
the same key code as the character '*', hence specifying the '+'
character by key code instead of key character might be not suitable.
To indicate that only the key code should be checked, pass
KeyEvent.CHAR_UNDEFINED as key character.
To indicate that only the key character should be checked, pass
KeyEvent.VK_UNDEFINED as key code.type - The type of the AWT event.keyCode - The code associated with the key,
or KeyEvent.VK_UNDEFINED.keyChar - The character associated with the key,
or KeyEvent.CHAR_UNDEFINED.modifiers - The modifiers of the key.consumeEvents - If true, the accelerator handles and
consumes the event, except when the consume flag of the event
is already set to true. If false, the
accelerator ignores the event's consume flag, and handles all
events without changing the consume flag.public IlvZoomInAccelerator(int type,
int keyCode,
int modifiers,
boolean consumeEvents)
IlvZoomInAccelerator.type - The type of the AWT event.keyCode - The code associated with the key.modifiers - The modifiers of the key.consumeEvents - If true, the accelerator handles and consumes
the event, except when the consume flag of the event is already set to
true. If false, the accelerator ignores the
event's consume flag, and handles all events without changing the
consume flag.public IlvZoomInAccelerator(int type,
int keyCode,
int modifiers)
IlvZoomInAccelerator.type - The type of the AWT event.keyCode - The code associated with the key.modifiers - The modifiers of the key.public double getZoomFactor()
public void setZoomFactor(double zoomFactor)
protected boolean handleEvent(IlvManagerView v)
handleEvent in class IlvAcceleratorv - The manager view.© Copyright Rogue Wave Software, Inc. 1997, 2018. All Rights Reserved.