/**
* callback method for onTouch events
*
* @param pointinfo info about the touch event
* @return
* <p><b>true</b> if the touch event is handled by this event<br>
* <b>false</b> if this touch event is not for this element
* <p>This is intended, that a subobject can check, if it should handle a click or so, or if
* the event should be sent to the underlying object.
*/
public boolean onTouch(PointInfo pointinfo) {
boolean handleEvent = false;
// first ask our subobjects to handle it, otherwise let us handle it
for (int i = subDrawables.size() - 1; i >= 0 && !handleEvent; i--) {
MultiTouchDrawable sub = subDrawables.get(i);
if (sub.containsPoint(pointinfo.getX(), pointinfo.getY())) {
handleEvent = sub.onTouch(pointinfo);
}
}
// Logger.d("touch action: "+this.getClass().getSimpleName()+" " +
// pointinfo.getAction()+
// " 0x"+Integer.toHexString(pointinfo.getAction()));
// it's hard to find MOTION_UP events, because if the finger does not
// stay exactly on the correct position,
// this will change to dragging and we wont't get the drag end as
// MOTION_UP
if (!handleEvent
&& pointinfo.isMultiTouch() == false
&& pointinfo.getNumTouchPoints() == 1
&& pointinfo.getAction() == MotionEvent.ACTION_DOWN) {
handleEvent = this.onSingleTouch(pointinfo);
}
return handleEvent;
}
/**
* Get the image that is under the single-touch point, or return null (canceling the drag op) if
* none
*/
public Img getDraggableObjectAtPoint(PointInfo pt) {
float x = pt.getX(), y = pt.getY();
int n = mImages.size();
for (int i = n - 1; i >= 0; i--) {
Img im = mImages.get(i);
if (im.containsPoint(x, y)) return im;
}
return null;
}
private void drawMultitouchDebugMarks(Canvas canvas) {
if (currTouchPoint.isDown()) {
float[] xs = currTouchPoint.getXs();
float[] ys = currTouchPoint.getYs();
float[] pressures = currTouchPoint.getPressures();
int numPoints = Math.min(currTouchPoint.getNumTouchPoints(), 2);
for (int i = 0; i < numPoints; i++)
canvas.drawCircle(xs[i], ys[i], 50 + pressures[i] * 80, mLinePaintTouchPointCircle);
if (numPoints == 2) canvas.drawLine(xs[0], ys[0], xs[1], ys[1], mLinePaintTouchPointCircle);
}
}
/*----------------------getDraggableObjectAtPoint--------------------------------------------------------------------*/
public KiwiGLSurfaceView getDraggableObjectAtPoint(PointInfo touchPoint) {
final float x = touchPoint.getX();
final float y = touchPoint.getY();
Log.d(TAG, "getDraggableObjectAtPoint");
this.queueEvent(
new Runnable() {
public void run() {
MidasNative.handleSingleTouchDown(x, y);
requestRender();
}
});
return this;
}
/** 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;
}
public MultiTouchDrawable getDraggableObjectAtPoint(PointInfo pt) {
float x = pt.getX(), y = pt.getY();
int n = subDrawables.size();
for (int i = n - 1; i >= 0; i--) {
MultiTouchDrawable im = subDrawables.get(i);
if (im.isDragable() && im.containsPoint(x, y)) {
return im.getDraggableObjectAtPoint(pt);
}
}
if (this.containsPoint(pt.getX(), pt.getY())) {
return this;
}
return null;
}
/**
* 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();
}
/* (non-Javadoc)
* @see com.ds.avare.MultiTouchController.MultiTouchObjectCanvas#setPositionAndScale(java.lang.Object, com.ds.avare.MultiTouchController.PositionAndScale, com.ds.avare.MultiTouchController.PointInfo)
*/
public boolean setPositionAndScale(
Object obj, PositionAndScale newObjPosAndScale, PointInfo touchPoint) {
touchPointChanged(touchPoint);
if (false == mCurrTouchPoint.isMultiTouch()) {
/*
* Do not move on drag
*/
if (mDragPlanPoint >= 0) {
return true;
}
/*
* Do not move on multitouch
*/
if (mDraw && mService != null) {
float x = mCurrTouchPoint.getX() * mScale.getScaleFactor();
float y = mCurrTouchPoint.getY() * mScale.getScaleFactor();
/*
* Threshold the drawing so we do not generate too many points
*/
if (mPref.isTrackUp()) {
double thetab = mGpsParams.getBearing();
double p[] = new double[2];
double c_x = mOrigin.getOffsetX(mGpsParams.getLongitude());
double c_y = mOrigin.getOffsetY(mGpsParams.getLatitude());
p = Helper.rotateCoord(c_x, c_y, thetab, x, y);
mService.getDraw().addPoint((float) p[0], (float) p[1], mOrigin);
} else {
mService.getDraw().addPoint(x, y, mOrigin);
}
return true;
}
// Pan
if (mPan.setMove(newObjPosAndScale.getXOff(), newObjPosAndScale.getYOff())) {
/*
* Query when we have moved one tile. This will happen in background.
*/
loadTiles();
}
} else {
// Zooming does not change drag
mDragPlanPoint = -1;
/*
* on double touch find distance and bearing between two points.
*/
if (mPointProjection == null) {
double x0 = mCurrTouchPoint.getXs()[0];
double y0 = mCurrTouchPoint.getYs()[0];
double x1 = mCurrTouchPoint.getXs()[1];
double y1 = mCurrTouchPoint.getYs()[1];
double lon0, lat0, lon1, lat1;
// convert to origin coord if Trackup
if (mPref.isTrackUp()) {
double c_x = mOrigin.getOffsetX(mGpsParams.getLongitude());
double c_y = mOrigin.getOffsetY(mGpsParams.getLatitude());
double thetab = mGpsParams.getBearing();
double p0[], p1[];
p0 = Helper.rotateCoord(c_x, c_y, thetab, x0, y0);
p1 = Helper.rotateCoord(c_x, c_y, thetab, x1, y1);
lon0 = mOrigin.getLongitudeOf(p0[0]);
lat0 = mOrigin.getLatitudeOf(p0[1]);
lon1 = mOrigin.getLongitudeOf(p1[0]);
lat1 = mOrigin.getLatitudeOf(p1[1]);
} else {
lon0 = mOrigin.getLongitudeOf(x0);
lat0 = mOrigin.getLatitudeOf(y0);
lon1 = mOrigin.getLongitudeOf(x1);
lat1 = mOrigin.getLatitudeOf(y1);
}
mPointProjection = new Projection(lon0, lat0, lon1, lat1);
}
/*
* Clamp scaling.
*/
mScale.setScaleFactor(newObjPosAndScale.getScale());
}
updateCoordinates();
invalidate();
return true;
}