ppsspp/Common/Input/GestureDetector.h
Unknown W. Brackets 2479d52202 Global: Reduce includes of common headers.
In many places, string, map, or Common.h were included but not needed.
2022-01-30 16:35:33 -08:00

50 lines
1.1 KiB
C++

#include <cstdint>
#include "Common/Input/InputState.h"
#include "Common/Math/geom2d.h"
// Mainly for detecting (multi-)touch gestures but also useable for left button mouse dragging etc.
// Currently only supports simple scroll-drags with inertia.
// TODO: Two-finger zoom/rotate etc.
enum Gesture {
GESTURE_DRAG_VERTICAL = 1,
GESTURE_DRAG_HORIZONTAL = 2,
GESTURE_TWO_FINGER_ZOOM = 4,
GESTURE_TWO_FINGER_ZOOM_ROTATE = 8,
};
// May track multiple gestures at the same time. You simply call GetGestureInfo
// with the gesture you are interested in.
class GestureDetector {
public:
GestureDetector();
TouchInput Update(const TouchInput &touch, const Bounds &bounds);
void UpdateFrame();
bool IsGestureActive(Gesture gesture, int touchId) const;
bool GetGestureInfo(Gesture gesture, int touchId, float info[4]) const;
private:
enum Locals {
MAX_PTRS = 10,
};
struct Pointer {
bool down;
double downTime;
float lastX;
float lastY;
float downX;
float downY;
float deltaX;
float deltaY;
float distanceX;
float distanceY;
float estimatedInertiaX;
float estimatedInertiaY;
uint32_t active;
};
Pointer pointers[MAX_PTRS]{};
};