<CPTPlotSpaceDelegate> Protocol Reference

Plot space delegate. More...

#import <CPTPlotSpace.h>

Inheritance diagram for <CPTPlotSpaceDelegate>:

Collaboration diagram for <CPTPlotSpaceDelegate>:

Public Instance Methods
Scaling
(BOOL)	- plotSpace:shouldScaleBy:aboutPoint:
	(Optional) Informs the receiver that it should uniformly scale (e.g., in response to a pinch gesture). More...
Scrolling
(CGPoint)	- plotSpace:willDisplaceBy:
	(Optional) Notifies that plot space is going to scroll. More...
Plot Range Changes
(nullable CPTPlotRange *)	- plotSpace:willChangePlotRangeTo:forCoordinate:
	(Optional) Notifies that plot space is going to change a plot range. More...
(void)	- plotSpace:didChangePlotRangeForCoordinate:
	(Optional) Notifies that plot space has changed a plot range. More...
User Interaction
(BOOL)	- plotSpace:shouldHandlePointingDeviceDownEvent:atPoint:
	(Optional) Notifies that plot space intercepted a device down event. More...
(BOOL)	- plotSpace:shouldHandlePointingDeviceDraggedEvent:atPoint:
	(Optional) Notifies that plot space intercepted a device dragged event. More...
(BOOL)	- plotSpace:shouldHandlePointingDeviceCancelledEvent:
	(Optional) Notifies that plot space intercepted a device cancelled event. More...
(BOOL)	- plotSpace:shouldHandlePointingDeviceUpEvent:atPoint:
	(Optional) Notifies that plot space intercepted a device up event. More...
(BOOL)	- plotSpace:shouldHandleScrollWheelEvent:fromPoint:toPoint:
	(Optional) Notifies that plot space intercepted a scroll wheel event. More...
Public Instance Methods inherited from <NSObject>
(NSString *)	- description
(NSUInteger)	- hash
(BOOL)	- isEqual:

Detailed Description

Plot space delegate.

Method Documentation

plotSpace:didChangePlotRangeForCoordinate:

- (void) plotSpace:		(nonnull CPTPlotSpace *)	space
didChangePlotRangeForCoordinate:		(CPTCoordinate)	coordinate

(Optional) Notifies that plot space has changed a plot range.

Parameters

space	The plot space.
coordinate	The coordinate of the range.

plotSpace:shouldHandlePointingDeviceCancelledEvent:

- (BOOL) plotSpace:		(nonnull CPTPlotSpace *)	space
shouldHandlePointingDeviceCancelledEvent:		(nonnull CPTNativeEvent *)	event

(Optional) Notifies that plot space intercepted a device cancelled event.

Parameters

space	The plot space.
event	The native event.

Returns

Whether the plot space should handle the event or not. In either case, the delegate may choose to take extra actions, or handle the event itself.

plotSpace:shouldHandlePointingDeviceDownEvent:atPoint:

- (BOOL) plotSpace:		(nonnull CPTPlotSpace *)	space
shouldHandlePointingDeviceDownEvent:		(nonnull CPTNativeEvent *)	event
atPoint:		(CGPoint)	point

(Optional) Notifies that plot space intercepted a device down event.

Parameters

space	The plot space.
event	The native event.
point	The point in the host view.

Returns

Whether the plot space should handle the event or not. In either case, the delegate may choose to take extra actions, or handle the event itself.

plotSpace:shouldHandlePointingDeviceDraggedEvent:atPoint:

- (BOOL) plotSpace:		(nonnull CPTPlotSpace *)	space
shouldHandlePointingDeviceDraggedEvent:		(nonnull CPTNativeEvent *)	event
atPoint:		(CGPoint)	point

(Optional) Notifies that plot space intercepted a device dragged event.

Parameters

space	The plot space.
event	The native event.
point	The point in the host view.

Returns

Whether the plot space should handle the event or not. In either case, the delegate may choose to take extra actions, or handle the event itself.

plotSpace:shouldHandlePointingDeviceUpEvent:atPoint:

- (BOOL) plotSpace:		(nonnull CPTPlotSpace *)	space
shouldHandlePointingDeviceUpEvent:		(nonnull CPTNativeEvent *)	event
atPoint:		(CGPoint)	point

(Optional) Notifies that plot space intercepted a device up event.

Parameters

space	The plot space.
event	The native event.
point	The point in the host view.

Returns

Whether the plot space should handle the event or not. In either case, the delegate may choose to take extra actions, or handle the event itself.

plotSpace:shouldHandleScrollWheelEvent:fromPoint:toPoint:

- (BOOL) plotSpace:		(nonnull CPTPlotSpace *)	space
shouldHandleScrollWheelEvent:		(nonnull CPTNativeEvent *)	event
fromPoint:		(CGPoint)	fromPoint
toPoint:		(CGPoint)	toPoint

(Optional) Notifies that plot space intercepted a scroll wheel event.

Parameters

space	The plot space.
event	The native event.
fromPoint	The The starting point in the host view.
toPoint	The The ending point in the host view.

Returns

Whether the plot space should handle the event or not. In either case, the delegate may choose to take extra actions, or handle the event itself.

plotSpace:shouldScaleBy:aboutPoint:

- (BOOL) plotSpace:		(nonnull CPTPlotSpace *)	space
shouldScaleBy:		(CGFloat)	interactionScale
aboutPoint:		(CGPoint)	interactionPoint

(Optional) Informs the receiver that it should uniformly scale (e.g., in response to a pinch gesture).

Parameters

space	The plot space.
interactionScale	The scaling factor.
interactionPoint	The coordinates of the scaling centroid.

Returns

YES if the gesture should be handled by the plot space, and NO if not. In either case, the delegate may choose to take extra actions, or handle the scaling itself.

plotSpace:willChangePlotRangeTo:forCoordinate:

- (nullable CPTPlotRange *) plotSpace:		(nonnull CPTPlotSpace *)	space
willChangePlotRangeTo:		(nonnull CPTPlotRange *)	newRange
forCoordinate:		(CPTCoordinate)	coordinate

(Optional) Notifies that plot space is going to change a plot range.

Parameters

space	The plot space.
newRange	The proposed new plot range.
coordinate	The coordinate of the range.

Returns

The new plot range to be used.

plotSpace:willDisplaceBy:

- (CGPoint) plotSpace:		(nonnull CPTPlotSpace *)	space
willDisplaceBy:		(CGPoint)	proposedDisplacementVector

(Optional) Notifies that plot space is going to scroll.

Parameters

space	The plot space.
proposedDisplacementVector	The proposed amount by which the plot space will shift.

Returns

The displacement actually applied.

---

The documentation for this protocol was generated from the following file:

• Source/CPTPlotSpace.h