/** Set the position and scale of the dragged/stretched image. */
public boolean setPositionAndScale(
Img img, PositionAndScale newImgPosAndScale, PointInfo touchPoint) {
currTouchPoint.set(touchPoint);
boolean ok = img.setPos(newImgPosAndScale);
if (ok) invalidate();
return ok;
}
/**
* Select an object for dragging. Called whenever an object is found to be under the point
* (non-null is returned by getDraggableObjectAtPoint()) and a drag operation is starting. Called
* with null when drag op ends.
*/
public void selectObject(Img img, PointInfo touchPoint) {
currTouchPoint.set(touchPoint);
if (img != null) {
// Move image to the top of the stack when selected
mImages.remove(img);
mImages.add(img);
} else {
// Called with img == null when drag stops.
}
invalidate();
}
/*----------------------setPositionAndScale--------------------------------------------------------------------*/
public boolean setPositionAndScale(KiwiGLSurfaceView obj, PositionAndScale pos, PointInfo info) {
Log.d(TAG, "setPositionAndScale");
if (this.mLastTouchInfo == null) {
this.mLastTouchInfo = new PointInfo();
this.mLastTouchInfo.set(info);
return true;
}
this.mCurrentTouchInfo.set(info);
boolean isMulti = mLastTouchInfo.isMultiTouch();
float dx = mCurrentTouchInfo.getX() - mLastTouchInfo.getX();
float dy = mCurrentTouchInfo.getY() - mLastTouchInfo.getY();
float x1 = mCurrentTouchInfo.getX();
float y1 = mCurrentTouchInfo.getY();
float x0 = x1 - dx;
float y0 = y1 + dy;
float scale = 1.0f;
float angle = 0.0f;
if (isMulti && mLastTouchInfo.getMultiTouchDiameter() != 0.0f) {
scale = mCurrentTouchInfo.getMultiTouchDiameter() / mLastTouchInfo.getMultiTouchDiameter();
}
if (isMulti) {
angle = mCurrentTouchInfo.getMultiTouchAngle() - mLastTouchInfo.getMultiTouchAngle();
}
MyRunnable myrun = new MyRunnable();
myrun.dx = dx;
myrun.dy = dy;
myrun.x0 = x0;
myrun.y0 = y0;
myrun.x1 = x1;
myrun.y1 = y1;
myrun.scale = scale;
myrun.angle = angle;
myrun.isMulti = isMulti;
this.queueEvent(myrun);
mLastTouchInfo.set(mCurrentTouchInfo);
return true;
}
/** @param touchPoint */
private void touchPointChanged(PointInfo touchPoint) {
mCurrTouchPoint.set(touchPoint);
invalidate();
}