This provides APIs related to operations, used in View Event Data.

Supported Event types are following:

User gesture over the Map
Map action, such as zooming or rotation
Object Event, such as pressing or moving
View readiness

Features available by Event Type

The correspondence between the type of event and available event data is following:

Feature/Event Type	Gesture	Action	Object	Ready
maps_view_event_type_e	+	+	+	+
maps_view_gesture_e	+		+
maps_view_action_e		+
maps_view_event_data_destroy()	+	+	+	+
maps_view_event_data_clone()	+	+	+	+
maps_view_event_data_get_type()	+	+	+	+
maps_view_event_data_get_gesture_type()	+		+
maps_view_event_data_get_action_type()		+
maps_view_event_data_get_center()		+
maps_view_event_data_get_delta()		+
maps_view_event_data_get_position()	+		+
maps_view_event_data_get_coordinates()	+
maps_view_event_data_get_fingers()	+		+
maps_view_event_data_get_zoom_factor()	+	+
maps_view_event_data_get_rotation_angle()	+	+
maps_view_event_data_get_object()			+

Note: the event of type MAPS_VIEW_EVENT_READY has no additional data besides the type.

Functions
int	maps_view_event_data_destroy (maps_view_event_data_h event)
	Destroys the event data handle.
int	maps_view_event_data_clone (const maps_view_event_data_h origin, maps_view_event_data_h *cloned)
	Clones the event handle.
int	maps_view_event_data_get_type (const maps_view_event_data_h event, maps_view_event_type_e *event_type)
	Gets the event type.
int	maps_view_event_data_get_gesture_type (const maps_view_event_data_h event, maps_view_gesture_e *gesture_type)
	Gets the event gesture type.
int	maps_view_event_data_get_action_type (const maps_view_event_data_h event, maps_view_action_e *action_type)
	Gets the event action type.
int	maps_view_event_data_get_center (const maps_view_event_data_h event, maps_coordinates_h *center)
	Gets the new map center coordinates.
int	maps_view_event_data_get_delta (const maps_view_event_data_h event, int delta_x, int delta_y)
	Gets the new map center movement coordinates delta.
int	maps_view_event_data_get_position (const maps_view_event_data_h event, int x, int y)
	Gets the event screen coordinates.
int	maps_view_event_data_get_coordinates (const maps_view_event_data_h event, maps_coordinates_h *coordinates)
	Gets the event geographic coordinates.
int	maps_view_event_data_get_fingers (const maps_view_event_data_h event, int *fingers)
	Gets the number of fingers, detected in the event.
int	maps_view_event_data_get_zoom_factor (const maps_view_event_data_h event, double *zoom_factor)
	Gets zoom factor of zoom gesture or action.
int	maps_view_event_data_get_rotation_angle (const maps_view_event_data_h event, double *rotation_angle)
	Gets rotation angle of rotation gesture or action.
int	maps_view_event_data_get_object (const maps_view_event_data_h event, maps_view_object_h *object)
	Gets object of event.
Typedefs
typedef void *	maps_view_event_data_h
	The View Event data handle.
typedef enum _maps_view_action_e	maps_view_action_e
	Enumeration for View actions.
typedef enum _maps_view_gesture_e	maps_view_gesture_e
	Enumeration for user gestures over View.
typedef enum _maps_view_event_type_e	maps_view_event_type_e
	Enumeration for map event types.

Typedef Documentation

typedef enum _maps_view_action_e maps_view_action_e

Enumeration for View actions.

This is an enumeration of View actions capable to perform.

Since :: 2.3.2

Remarks:: The View performs actions in response on user gestures, such as tap, zoom, long press, or APIs, such as set center or change zoom level.
To re-assign View actions to user gestures use maps_view_set_gesture_action().

See also:: maps_view_gesture_e

typedef void* maps_view_event_data_h

The View Event data handle.

The handle of View Event Data instance.

Since :: 2.3.2

Remarks:: To release the handle use maps_view_event_data_destroy().
To clone the handle use maps_view_event_data_clone().

See also:: maps_view_event_data_destroy(); maps_view_event_data_clone()

typedef enum _maps_view_event_type_e maps_view_event_type_e

Enumeration for map event types.

Since :: 2.3.2

typedef enum _maps_view_gesture_e maps_view_gesture_e

Enumeration for user gestures over View.

Since :: 2.3.2

Enumeration Type Documentation

enum _maps_view_action_e

Enumeration for View actions.

This is an enumeration of View actions capable to perform.

Since :: 2.3.2

Remarks:: The View performs actions in response on user gestures, such as tap, zoom, long press, or APIs, such as set center or change zoom level.
To re-assign View actions to user gestures use maps_view_set_gesture_action().

See also:: maps_view_gesture_e

Enumerator:

MAPS_VIEW_ACTION_SCROLL	Indicates the empty action
MAPS_VIEW_ACTION_ZOOM	Indicates the set center action
MAPS_VIEW_ACTION_ZOOM_IN	Indicates the zoom action
MAPS_VIEW_ACTION_ZOOM_OUT	Indicates the zoom-in action
MAPS_VIEW_ACTION_ZOOM_AND_SCROLL	Indicates the zoom-out action
MAPS_VIEW_ACTION_ROTATE	Indicates the zoom and scrolling action

enum _maps_view_event_type_e

Enumeration for map event types.

Since :: 2.3.2

Enumerator:

MAPS_VIEW_EVENT_GESTURE	Indicates the gesture event callback
MAPS_VIEW_EVENT_ACTION	Indicates the action callback
MAPS_VIEW_EVENT_OBJECT	Indicates the object event callback
MAPS_VIEW_EVENT_READY	Indicates the View readiness callback

enum _maps_view_gesture_e

Enumeration for user gestures over View.

Since :: 2.3.2

Enumerator:

MAPS_VIEW_GESTURE_NONE	Indicates the empty gesture
MAPS_VIEW_GESTURE_SCROLL	Indicates the move map user gesture
MAPS_VIEW_GESTURE_ZOOM	Indicates the zoom user gesture
MAPS_VIEW_GESTURE_TAP	Indicates the tap user gesture
MAPS_VIEW_GESTURE_DOUBLE_TAP	Indicates the double tap user gesture
MAPS_VIEW_GESTURE_2_FINGER_TAP	Indicates the two-finger tap user gesture
MAPS_VIEW_GESTURE_ROTATE	Indicates the rotation user gesture
MAPS_VIEW_GESTURE_LONG_PRESS	Indicates the long press user gesture

Function Documentation

int maps_view_event_data_clone	(	const maps_view_event_data_h	origin,
		maps_view_event_data_h *	cloned
	)

Clones the event handle.

This function clones the event handle origin and all its resources.

Since :: 2.3.2

Remarks:: cloned must be released using maps_view_event_data_destroy().

Parameters:

[in]	origin	The original event handle
[out]	cloned	A cloned event handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_OUT_OF_MEMORY	Out of memory
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_data_h; maps_view_event_data_destroy(); maps_view_on_event_cb()

int maps_view_event_data_destroy ( maps_view_event_data_h event )

Destroys the event data handle.

This function destroys the event data handle and releases all its resources.

Since :: 2.3.2

Parameters:

[in] event The event data handle to destroy

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_data_h; maps_view_event_data_clone()

int maps_view_event_data_get_action_type	(	const maps_view_event_data_h	event,
		maps_view_action_e *	action_type
	)

Gets the event action type.

This function gets the event action type if the event type is MAPS_VIEW_EVENT_ACTION. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	action_type	The pointer to the maps_view_action_e in which to store the action type

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_action_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_center	(	const maps_view_event_data_h	event,
		maps_coordinates_h *	center
	)

Gets the new map center coordinates.

This function gets the new map center coordinates if the event type is MAPS_VIEW_EVENT_ACTION. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Remarks:: The center should be freed using maps_coordinates_destroy().

Parameters:

[in]	event	The event data handle
[out]	center	The pointer to the maps_coordinates_h in which to store the new center coordinates

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_coordinates_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_coordinates	(	const maps_view_event_data_h	event,
		maps_coordinates_h *	coordinates
	)

Gets the event geographic coordinates.

This function gets the event geographic coordinates if the event type is MAPS_VIEW_EVENT_GESTURE. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Remarks:: The coordinates should be freed using maps_coordinates_destroy().

Parameters:

[in]	event	The event data handle
[out]	coordinates	The pointer to the maps_coordinates_h in which to store the coordinates

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_coordinates_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_delta	(	const maps_view_event_data_h	event,
		int *	delta_x,
		int *	delta_y
	)

Gets the new map center movement coordinates delta.

This function gets the screen coordinates delta of map center movement if the event type is MAPS_VIEW_EVENT_ACTION. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	delta_x	The pointer to an integer in which to store the delta x
[out]	delta_y	The pointer to an integer in which to store the delta y

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_fingers	(	const maps_view_event_data_h	event,
		int *	fingers
	)

Gets the number of fingers, detected in the event.

This function gets the number of user's fingers detected in the event if the event type is MAPS_VIEW_EVENT_GESTURE or MAPS_VIEW_EVENT_OBJECT. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	fingers	The pointer to an integer in which to store the number of fingers, detected in the gesture

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_gesture_type	(	const maps_view_event_data_h	event,
		maps_view_gesture_e *	gesture_type
	)

Gets the event gesture type.

This function gets the event gesture type if the event type is MAPS_VIEW_EVENT_GESTURE or MAPS_VIEW_EVENT_OBJECT. Otherwise it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	gesture_type	The pointer to the maps_view_gesture_e in which to store the gesture type

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_gesture_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_object	(	const maps_view_event_data_h	event,
		maps_view_object_h *	object
	)

Gets object of event.

When the event type is MAPS_VIEW_EVENT_OBJECT, this function gets the corresponding object handle. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Remarks:: The object must not be released.

Parameters:

[in]	event	The event data handle
[out]	object	The pointer to maps_view_object_h in which to store the object handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_position	(	const maps_view_event_data_h	event,
		int *	x,
		int *	y
	)

Gets the event screen coordinates.

This function gets the event screen coordinates if the event type is MAPS_VIEW_EVENT_GESTURE or MAPS_VIEW_EVENT_OBJECT. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	x	The pointer to an integer in which to store the x position of the event
[out]	y	The pointer to an integer in which to store the y position of the event

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_rotation_angle	(	const maps_view_event_data_h	event,
		double *	rotation_angle
	)

Gets rotation angle of rotation gesture or action.

This function gets the corresponding rotation angle if the event type is MAPS_VIEW_EVENT_GESTURE or MAPS_VIEW_EVENT_ACTION. Otherwise, it returns MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	rotation_angle	The pointer to a double in which to store the rotation angle

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

int maps_view_event_data_get_type	(	const maps_view_event_data_h	event,
		maps_view_event_type_e *	event_type
	)

Gets the event type.

This function gets the event type.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	event_type	The pointer to the maps_view_event_type_e in which to store the event type

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_destroy(); maps_view_on_event_cb()

int maps_view_event_data_get_zoom_factor	(	const maps_view_event_data_h	event,
		double *	zoom_factor
	)

Gets zoom factor of zoom gesture or action.

This function gets the corresponding zoom factor if the event type is MAPS_VIEW_EVENT_GESTURE or MAPS_VIEW_EVENT_ACTION. Otherwise, it returns the MAPS_ERROR_INVALID_PARAMETER.

Since :: 2.3.2

Parameters:

[in]	event	The event data handle
[out]	zoom_factor	The pointer to a double in which to store the zoom factor

Returns:: 0 on success, otherwise a negative error value

Return values:

MAPS_ERROR_NONE	Successful
MAPS_ERROR_INVALID_PARAMETER	Invalid parameter
MAPS_ERROR_NOT_SUPPORTED	Not supported

Precondition:: event may be obtained in maps_view_on_event_cb().

See also:: maps_view_event_type_e; maps_view_event_data_h; maps_view_event_data_get_type(); maps_view_on_event_cb()

Functions

Typedefs

Typedef Documentation

Enumeration Type Documentation

Function Documentation