| class GestureHelper::MGestureEvent |
a gesture event
| Public Member Functions | |
|---|---|
| TGestureCode | Code ( TAxis ) |
| TPoint | CurrentPos () |
| TPoint | Distance () |
| TBool | IsHolding () |
| TPoint | PinchCentrePoint () |
| TInt | PinchPercent () |
| TRealPoint | Speed () |
| TRealPoint | SpeedPercent (const TRect &) |
| TPoint | StartPos () |
| CAlfVisual * | Visual () |
| Public Member Enumerations | |
|---|---|
| enum | TAxis { EAxisBoth , EAxisHorizontal , EAxisVertical } |
| TGestureCode | Code | ( | TAxis | aRelevantAxis | ) | const [pure virtual] |
| TAxis aRelevantAxis | indicates whether only x, y or both coordinates should be considered when determining the code. For example, if client specifies EAxisVertical as relevant axis, a swipe to left and slightly up would result in an "swipe up" code, and not "swipe left" code. If client specifies EAxisHorizontal or EAxisBoth, "swipe left" code is returned. |
| TPoint | PinchCentrePoint | ( | ) | const [pure virtual] |
Centre point of the two touch points
Used only for pinch. Returns TPoint(0,0) for other gestures.
| TInt | PinchPercent | ( | ) | const [pure virtual] |
Pinch distance
Used only for pinch. Returns 0 for other gestures.
| TRealPoint | SpeedPercent | ( | const TRect & | aEdges | ) | const [pure virtual] |
Abstracts the algorithm to calculate speed during swipe and hold. This algorithm (currently) assumes that max speed is achieved at the edges of an area.
| const TRect & aEdges | represents the coordinates of the rectange on which speed is calculated. Speed will reach maximum if stylus is on the edge or beyond the rect. In practise, the value should match the area of the layout that contains the scrollable visuals. For example, if the control area is the whole screen, the rect should be the screen rect. |
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