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[Android] Fixes #2228, reworked touch code

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Lets Android take care of which is the primary pointer (the one acting as the
mouse in SDL), reorganized the Java side code as well to make it easier to
understand.
This commit is contained in:
Gabriel Jacobo 2013-11-25 12:28:09 -03:00
parent c933166401
commit 1ad0d24828
2 changed files with 57 additions and 42 deletions
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53
android-project/src/org/libsdl/app/SDLActivity.java
View file

@ -666,31 +666,48 @@ class SDLSurface extends SurfaceView implements SurfaceHolder.Callback,
// Touch events
@Override
public boolean onTouch(View v, MotionEvent event) {
final int touchDevId = event.getDeviceId();
final int pointerCount = event.getPointerCount();
// touchId, pointerId, action, x, y, pressure
int actionPointerIndex = (event.getAction() & MotionEvent.ACTION_POINTER_ID_MASK) >> MotionEvent.ACTION_POINTER_ID_SHIFT; /* API 8: event.getActionIndex(); */
int pointerFingerId = event.getPointerId(actionPointerIndex);
int action = (event.getAction() & MotionEvent.ACTION_MASK); /* API 8: event.getActionMasked(); */
float x = event.getX(actionPointerIndex) / mWidth;
float y = event.getY(actionPointerIndex) / mHeight;
float p = event.getPressure(actionPointerIndex);
if (action == MotionEvent.ACTION_MOVE && pointerCount > 1) {
// TODO send motion to every pointer if its position has
// changed since prev event.
for (int i = 0; i < pointerCount; i++) {
/* Ref: http://developer.android.com/training/gestures/multi.html */
final int touchDevId = event.getDeviceId();
final int pointerCount = event.getPointerCount();
int action = event.getActionMasked();
int pointerFingerId;
int i = -1;
float x,y,p;
switch(action) {
case MotionEvent.ACTION_MOVE:
for (i = 0; i < pointerCount; i++) {
pointerFingerId = event.getPointerId(i);
x = event.getX(i) / mWidth;
y = event.getY(i) / mHeight;
p = event.getPressure(i);
SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p);
}
} else {
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_DOWN:
// Primary pointer up/down, the index is always zero
i = 0;
case MotionEvent.ACTION_POINTER_UP:
case MotionEvent.ACTION_POINTER_DOWN:
// Non primary pointer up/down
if (i == -1) {
i = event.getActionIndex();
}
pointerFingerId = event.getPointerId(i);
x = event.getX(i) / mWidth;
y = event.getY(i) / mHeight;
p = event.getPressure(i);
SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p);
}
return true;
break;
default:
break;
}
return true;
}
// Sensor events