com.sun.glass.ui

Class View.EventHandler

java.lang.Object

com.sun.glass.ui.View.EventHandler

Enclosing class:

View

public static class View.EventHandler
extends Object

Constructor Summary

Constructors

Constructor and Description
EventHandler()

Method Summary

Modifier and Type	Method and Description
double[]	getInputMethodCandidatePos(int offset)
Accessible	getSceneAccessible()
void	handleBeginTouchEvent(View view, long time, int modifiers, boolean isDirect, int touchEventCount) Touch event handler.
int	handleDragDrop(View view, int x, int y, int xAbs, int yAbs, int recommendedDropAction, ClipboardAssistance dropTargetAssistant)
void	handleDragEnd(View view, int performedAction)
int	handleDragEnter(View view, int x, int y, int xAbs, int yAbs, int recommendedDropAction, ClipboardAssistance dropTargetAssistant)
void	handleDragLeave(View view, ClipboardAssistance dropTargetAssistant)
int	handleDragOver(View view, int x, int y, int xAbs, int yAbs, int recommendedDropAction, ClipboardAssistance dropTargetAssistant)
void	handleDragStart(View view, int button, int x, int y, int xAbs, int yAbs, ClipboardAssistance dropSourceAssistant)
void	handleEndTouchEvent(View view, long time) Touch event handler.
void	handleInputMethodEvent(long time, String text, int[] clauseBoundary, int[] attrBoundary, byte[] attrValue, int commitCount, int cursorPos)
void	handleKeyEvent(View view, long time, int action, int keyCode, char[] keyChars, int modifiers)
void	handleMenuEvent(View view, int x, int y, int xAbs, int yAbs, boolean isKeyboardTrigger)
void	handleMouseEvent(View view, long time, int type, int button, int x, int y, int xAbs, int yAbs, int modifiers, boolean isPopupTrigger, boolean isSynthesized)
void	handleNextTouchEvent(View view, long time, int type, long touchId, int x, int y, int xAbs, int yAbs) Touch event handler.
void	handleRotateGestureEvent(View view, long time, int type, int modifiers, boolean isDirect, boolean isInertia, int x, int y, int xAbs, int yAbs, double dangle, double totalangle) Rotation gesture handler.
void	handleScrollEvent(View view, long time, int x, int y, int xAbs, int yAbs, double deltaX, double deltaY, int modifiers, int lines, int chars, int defaultLines, int defaultChars, double xMultiplier, double yMultiplier) A Scroll event handler.
void	handleScrollGestureEvent(View view, long time, int type, int modifiers, boolean isDirect, boolean isInertia, int touchCount, int x, int y, int xAbs, int yAbs, double dx, double dy, double totaldx, double totaldy, double multiplierX, double multiplierY) Scroll gesture handler.
void	handleSwipeGestureEvent(View view, long time, int type, int modifiers, boolean isDirect, boolean isInertia, int touchCount, int dir, int x, int y, int xAbs, int yAbs) Swipe gesture handler.
void	handleViewEvent(View view, long time, int type)
void	handleZoomGestureEvent(View view, long time, int type, int modifiers, boolean isDirect, boolean isInertia, int x, int y, int xAbs, int yAbs, double scale, double expansion, double totalscale, double totalexpansion) Zoom gesture handler.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EventHandler

public EventHandler()

Method Detail

handleViewEvent

public void handleViewEvent(View view,
                            long time,
                            int type)

handleKeyEvent

public void handleKeyEvent(View view,
                           long time,
                           int action,
                           int keyCode,
                           char[] keyChars,
                           int modifiers)

handleMenuEvent

public void handleMenuEvent(View view,
                            int x,
                            int y,
                            int xAbs,
                            int yAbs,
                            boolean isKeyboardTrigger)

handleMouseEvent

public void handleMouseEvent(View view,
                             long time,
                             int type,
                             int button,
                             int x,
                             int y,
                             int xAbs,
                             int yAbs,
                             int modifiers,
                             boolean isPopupTrigger,
                             boolean isSynthesized)

handleScrollEvent

public void handleScrollEvent(View view,
                              long time,
                              int x,
                              int y,
                              int xAbs,
                              int yAbs,
                              double deltaX,
                              double deltaY,
                              int modifiers,
                              int lines,
                              int chars,
                              int defaultLines,
                              int defaultChars,
                              double xMultiplier,
                              double yMultiplier)

A Scroll event handler. The lines argument: > 0 - a number of lines to scroll per each 1.0 of deltaY scroll amount == 0 - the scroll amount is in pixel units < 0 - the scrolling should be performed by pages. Each 1.0 of scroll amount corresponds to exactly one page of scrollable content. Similarly, the chars argument specifies the number of characters to scroll per 1.0 of the deltaX scrolling amount. If the parameter is zero, the deltaX represents the number of pixels to scroll. The defaultLines and defaultChars arguments contain the system-default values of lines and chars. This can be used by the app to compute the ratio of current settings and default settings and adjust the pixel values accordingly. Multiplers are used when an app receives a non-zero unit values (i.e. either the lines or chars are not zeroes), but wants instead get delta values in pixels. In this case the app needs to multiply the deltas on the provided multiplier parameter.

handleInputMethodEvent

public void handleInputMethodEvent(long time,
                                   String text,
                                   int[] clauseBoundary,
                                   int[] attrBoundary,
                                   byte[] attrValue,
                                   int commitCount,
                                   int cursorPos)

getInputMethodCandidatePos

public double[] getInputMethodCandidatePos(int offset)

handleDragStart

public void handleDragStart(View view,
                            int button,
                            int x,
                            int y,
                            int xAbs,
                            int yAbs,
                            ClipboardAssistance dropSourceAssistant)

handleDragEnd

public void handleDragEnd(View view,
                          int performedAction)

handleDragEnter

public int handleDragEnter(View view,
                           int x,
                           int y,
                           int xAbs,
                           int yAbs,
                           int recommendedDropAction,
                           ClipboardAssistance dropTargetAssistant)

handleDragOver

public int handleDragOver(View view,
                          int x,
                          int y,
                          int xAbs,
                          int yAbs,
                          int recommendedDropAction,
                          ClipboardAssistance dropTargetAssistant)

handleDragLeave

public void handleDragLeave(View view,
                            ClipboardAssistance dropTargetAssistant)

handleDragDrop

public int handleDragDrop(View view,
                          int x,
                          int y,
                          int xAbs,
                          int yAbs,
                          int recommendedDropAction,
                          ClipboardAssistance dropTargetAssistant)

handleBeginTouchEvent

public void handleBeginTouchEvent(View view,
                                  long time,
                                  int modifiers,
                                  boolean isDirect,
                                  int touchEventCount)

Touch event handler. Called when touch event occures. Always followed with one ore more #handleNextTouchEvent() calls and a single #handleEndTouchEvent() call.

Parameters:

isDirect - if event reported by direct or indirect touch device; touch screen is an example of direct touch device and touch pad is an example of indirect one

touchEventCount - indicates number of #handleNextTouchEvent() calls that will follow this method call.

handleNextTouchEvent

public void handleNextTouchEvent(View view,
                                 long time,
                                 int type,
                                 long touchId,
                                 int x,
                                 int y,
                                 int xAbs,
                                 int yAbs)

Touch event handler. Called for every touch point in some touch event. If the touch event has been emitted with direct touch device (touch screen) then x and y arguments designate touch point position relative to the top-left corner of the view and xAbs and yAbs arguments designate position relative to the top-left corner of the screen. Both positions are measured in pixels. If the touch event has been emitted with indirect touch device (touch pad) then x and y arguments designate normalized touch point position. It is measured between (0,0) and (10000,10000), where (0,0) is the top-left and (10000,10000) is the bottom-right position on the indirect touch input device (touch pad). xAbs and yAbs arguments are equal values of x and y arguments respectively.

Parameters:

type - touch event type. One of constants declared in #com.sun.glass.events.TouchEvent class.

touchId - touch point identifier; every touch point has its own unique identifier; the identifier remains the same across multiple calls of #handleNextTouchEvent method for the same touch point until it is not released.

x - the X coordinate of the touch point;

y - the Y coordinate of the touch point;

xAbs - absolute X coordinate of the touch point;

yAbs - absolute Y coordinate of the touch point;

See Also:

handleBeginTouchEvent(com.sun.glass.ui.View, long, int, boolean, int)

handleEndTouchEvent

public void handleEndTouchEvent(View view,
                                long time)

Touch event handler. Called to notify that all #handleNextTouchEvent methods corresponding to some touch event have been called already.

See Also:

handleBeginTouchEvent(com.sun.glass.ui.View, long, int, boolean, int)

handleScrollGestureEvent

public void handleScrollGestureEvent(View view,
                                     long time,
                                     int type,
                                     int modifiers,
                                     boolean isDirect,
                                     boolean isInertia,
                                     int touchCount,
                                     int x,
                                     int y,
                                     int xAbs,
                                     int yAbs,
                                     double dx,
                                     double dy,
                                     double totaldx,
                                     double totaldy,
                                     double multiplierX,
                                     double multiplierY)

Scroll gesture handler. If underlying system supports coordinates for gestures then x and y arguments designate gesture position relative to the top-left corner of the view and xAbs and yAbs designate gesture position relative to the top-left corner of the screen. For gestures emitted from direct touch input device (touch screen) positions are measured in pixels. For gestures emitted from indirect touch input device (touch pad) positions are normalized. For details of normalized touch input position see #handleBeginTouchEvent method. If underlying system doesn't support coordinates for gestures then x and y arguments designate mouse position relative to the top-left corner of the view and xAbs and yAbs designate mouse position relative to the top-left corner of the screen. Positions are measured in pixels. If gesture handler is called to notify end of gesture, i.e. value of type argument is equal to com.sun.glass.events.GestureEvent.GESTURE_FINISHED constant then x, y, xAbs and yAbs arguments may be set to View.GESTURE_NO_VALUE constant indicating no data is available. This is implementation specific behavior. Values of dx and dy arguments are always 0.0 if type argument is set to com.sun.glass.events.GestureEvent.GESTURE_FINISHED constant. For description of isDirect argument see #handleBeginTouchEvent method.

Parameters:

type - gesture state. One of constants declared in #com.sun.glass.events.GestureEvent class.

isInertia - if gesture is caused by inertia.

touchCount - number of touch points at the moment of gesture execution; it is always set to View.GESTURE_NO_VALUE constant if value of type argument is set to com.sun.glass.events.GestureEvent.GESTURE_FINISHED constant

x - the X coordinate of the gesture;

y - the Y coordinate of the gesture;

xAbs - absolute X coordinate of the gesture;

yAbs - absolute Y coordinate of the gesture;

dx - horizontal scroll delta. Positive if scrolling from left to right, non-positive otherwise

dy - vertical scroll delta. Positive if scrolling from up to down, non-positive otherwise

totaldx - total horizontal scroll calculated from all sequential scroll gestures, i.e. sum of all 'dx' values from previous sequential calls to this method

totaldy - total vertical scroll calculated from all sequential scroll gestures, i.e. sum of all 'dy' values from previous sequential calls to this method

multiplierX - the X multiplier

multiplierY - the Y multiplier Multiplers are used when an app receives a non-zero unit values (i.e. either the lines or chars are not zeroes), but wants instead get delta values in pixels. In this case the app needs to multiply the deltas on the provided multiplier parameter.

handleZoomGestureEvent

public void handleZoomGestureEvent(View view,
                                   long time,
                                   int type,
                                   int modifiers,
                                   boolean isDirect,
                                   boolean isInertia,
                                   int x,
                                   int y,
                                   int xAbs,
                                   int yAbs,
                                   double scale,
                                   double expansion,
                                   double totalscale,
                                   double totalexpansion)

Zoom gesture handler. For description of isDirect argument see #handleBeginTouchEvent method. For description of isInertia argument see #handleScrollGestureEvent method. For description of type, x,y, xAbs and yAbs arguments see #handleBeginTouchEvent method. If underlying system doesn't support measurement of expansion value in zoom gestures then expansion and totalexpansion arguments are always set to View.GESTURE_NO_DOUBLE_VALUE. If type argument is set to com.sun.glass.events.GestureEvent.GESTURE_FINISHED constant value of scale argument is always set to View.GESTURE_NO_DOUBLE_VALUE constant and expansion argument is always 0.0.

Parameters:

scale - current zoom delta; the value is multiplicative and not additive.

expansion - current expansion delta. Measured in pixels on direct touch input devices and normalized values on indirect touch input devices. See #handleBeginTouchEvent for description of units of indirect touch input devices.

totalscale - total zoom calculated from all sequential zoom gestures, i.e. sum of all 'scale' values from previous sequential calls to this method

totalexpansion - total expansion calculated from all sequential zoom gestures, i.e. sum of all 'expansion' values from previous sequential calls of this method

handleRotateGestureEvent

public void handleRotateGestureEvent(View view,
                                     long time,
                                     int type,
                                     int modifiers,
                                     boolean isDirect,
                                     boolean isInertia,
                                     int x,
                                     int y,
                                     int xAbs,
                                     int yAbs,
                                     double dangle,
                                     double totalangle)

Rotation gesture handler. For description of isDirect argument see #handleBeginTouchEvent method. For description of isInertia argument see #handleScrollGestureEvent method. For description of type, x,y, xAbs and yAbs arguments see #handleBeginTouchEvent method.

Parameters:

dangle - current angle delta in degrees. Positive for clockwise rotation

totalangle - total angle calculated from all sequential rotation gestures, i.e. sum of all 'dangle' values from previous sequential calls of this method

handleSwipeGestureEvent

public void handleSwipeGestureEvent(View view,
                                    long time,
                                    int type,
                                    int modifiers,
                                    boolean isDirect,
                                    boolean isInertia,
                                    int touchCount,
                                    int dir,
                                    int x,
                                    int y,
                                    int xAbs,
                                    int yAbs)

Swipe gesture handler. For description of isDirect argument see #handleBeginTouchEvent method. For description of isInertia and touchCount arguments see #handleScrollGestureEvent method. For description of type, x,y, xAbs and yAbs arguments see #handleBeginTouchEvent method.

Parameters:

dir - gesture direction. One of constants defined in com.sun.glass.events.SwipeGesture class.

getSceneAccessible

public Accessible getSceneAccessible()