@Override
protected void dispatchDraw(Canvas canvas) {
super.dispatchDraw(canvas);
// Draw the margin drawable if needed.
mViewBehind.drawShadow(mContent, canvas);
mViewBehind.drawFade(mContent, canvas, getPercentOpen());
mViewBehind.drawSelector(mContent, canvas, getPercentOpen());
}
private boolean thisSlideAllowed(float dx) {
boolean allowed = false;
if (isMenuOpen()) {
allowed = mViewBehind.menuOpenSlideAllowed(dx);
} else {
allowed = mViewBehind.menuClosedSlideAllowed(dx);
}
if (DEBUG) Log.v(TAG, "this slide allowed " + allowed + " dx: " + dx);
return allowed;
}
@Override
public void scrollTo(int x, int y) {
super.scrollTo(x, y);
mScrollX = x;
mViewBehind.scrollBehindTo(mContent, x, y);
((SlidingMenu) getParent()).manageLayers(getPercentOpen());
}
private boolean thisTouchAllowed(MotionEvent ev) {
int x = (int) (ev.getX() + mScrollX);
if (isMenuOpen()) {
return mViewBehind.menuOpenTouchAllowed(mContent, mCurItem, x);
} else {
switch (mTouchMode) {
case SlidingMenu.TOUCHMODE_FULLSCREEN:
return !isInIgnoredView(ev);
case SlidingMenu.TOUCHMODE_NONE:
return false;
case SlidingMenu.TOUCHMODE_MARGIN:
return mViewBehind.marginTouchAllowed(mContent, x);
}
}
return false;
}
public int getBehindWidth() {
if (mViewBehind == null) {
return 0;
} else {
return mViewBehind.getBehindWidth();
}
}
/**
* Controls whether the SlidingMenu can be opened with a swipe gesture. Options are {@link
* #TOUCHMODE_MARGIN TOUCHMODE_MARGIN}, {@link #TOUCHMODE_FULLSCREEN TOUCHMODE_FULLSCREEN}, or
* {@link #TOUCHMODE_NONE TOUCHMODE_NONE}
*
* @param i the new touch mode
*/
public void setTouchModeBehind(int i) {
if (i != TOUCHMODE_FULLSCREEN && i != TOUCHMODE_MARGIN && i != TOUCHMODE_NONE) {
throw new IllegalStateException(
"TouchMode must be set to either"
+ "TOUCHMODE_FULLSCREEN or TOUCHMODE_MARGIN or TOUCHMODE_NONE.");
}
mViewBehind.setTouchMode(i);
}
/**
* Sets the behind offset.
*
* @param i The margin, in pixels, on the right of the screen that the behind view scrolls to.
*/
public void setBehindOffset(int i) {
// RelativeLayout.LayoutParams params =
// ((RelativeLayout.LayoutParams)mViewBehind.getLayoutParams());
// int bottom = params.bottomMargin;
// int top = params.topMargin;
// int left = params.leftMargin;
// params.setMargins(left, top, i, bottom);
mViewBehind.setWidthOffset(i);
}
public int getDestScrollX(int page) {
switch (page) {
case 0:
case 2:
return mViewBehind.getMenuLeft(mContent, page);
case 1:
return mContent.getLeft();
}
return 0;
}
public void setCurrentItemInternal(int item, boolean smoothScroll, boolean always, int velocity) {
if (!always && mCurItem == item) {
setScrollingCacheEnabled(false);
return;
}
item = mViewBehind.getMenuPage(item);
final boolean dispatchSelected = mCurItem != item;
mCurItem = item;
if (mViewBehind.getbMode()) {
final int destY = getDestScrollX(mCurItem);
if (dispatchSelected && mOnPageChangeListener != null) {
mOnPageChangeListener.onPageSelected(item);
}
if (dispatchSelected && mInternalPageChangeListener != null) {
mInternalPageChangeListener.onPageSelected(item);
}
if (smoothScroll) {
smoothScrollTo(0, destY, velocity);
} else {
completeScroll();
scrollTo(0, destY);
}
} else {
final int destX = getDestScrollX(mCurItem);
if (dispatchSelected && mOnPageChangeListener != null) {
mOnPageChangeListener.onPageSelected(item);
}
if (dispatchSelected && mInternalPageChangeListener != null) {
mInternalPageChangeListener.onPageSelected(item);
}
if (smoothScroll) {
smoothScrollTo(destX, 0, velocity);
} else {
completeScroll();
scrollTo(destX, 0);
}
}
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (!mEnabled) return false;
final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
if (DEBUG) if (action == MotionEvent.ACTION_DOWN) Log.v(TAG, "Received ACTION_DOWN");
if (action == MotionEvent.ACTION_CANCEL
|| action == MotionEvent.ACTION_UP
|| (action != MotionEvent.ACTION_DOWN && mIsUnableToDrag)) {
endDrag();
return false;
}
switch (action) {
case MotionEvent.ACTION_MOVE:
determineDrag(ev);
break;
case MotionEvent.ACTION_DOWN:
int index = MotionEventCompat.getActionIndex(ev);
mActivePointerId = MotionEventCompat.getPointerId(ev, index);
if (mActivePointerId == INVALID_POINTER) break;
mLastMotionX = mInitialMotionX = MotionEventCompat.getX(ev, index);
mLastMotionY = MotionEventCompat.getY(ev, index);
if (thisTouchAllowed(ev)) {
mIsBeingDragged = false;
mIsUnableToDrag = false;
if (isMenuOpen()
&& mViewBehind.menuTouchInQuickReturn(mContent, mCurItem, ev.getX() + mScrollX)) {
mQuickReturn = true;
}
} else {
mIsUnableToDrag = true;
}
break;
case MotionEventCompat.ACTION_POINTER_UP:
onSecondaryPointerUp(ev);
break;
}
if (!mIsBeingDragged) {
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
}
return mIsBeingDragged || mQuickReturn;
}
private void determineDrag(MotionEvent ev) {
final int activePointerId = mActivePointerId;
final int pointerIndex = getPointerIndex(ev, activePointerId);
if (activePointerId == INVALID_POINTER || pointerIndex == INVALID_POINTER) return;
final float x = MotionEventCompat.getX(ev, pointerIndex);
final float dx = x - mLastMotionX;
final float xDiff = Math.abs(dx);
final float y = MotionEventCompat.getY(ev, pointerIndex);
final float dy = y - mLastMotionY;
final float yDiff = Math.abs(dy);
if (mViewBehind.getbMode()) {
if (yDiff > (isMenuOpen() ? mTouchSlop / 2 : mTouchSlop)
&& yDiff > xDiff
&& thisSlideAllowed(dy)) {
startDrag();
mLastMotionX = x;
mLastMotionY = y;
setScrollingCacheEnabled(true);
// TODO add back in touch slop check
} else if (yDiff > mTouchSlop) {
mIsUnableToDrag = true;
}
} else {
if (xDiff > (isMenuOpen() ? mTouchSlop / 2 : mTouchSlop)
&& xDiff > yDiff
&& thisSlideAllowed(dx)) {
startDrag();
mLastMotionX = x;
mLastMotionY = y;
setScrollingCacheEnabled(true);
// TODO add back in touch slop check
} else if (xDiff > mTouchSlop) {
mIsUnableToDrag = true;
}
}
}
/**
* Sets the shadow width.
*
* @param pixels the new shadow width, in pixels
*/
public void setShadowWidth(int pixels) {
mViewBehind.setShadowWidth(pixels);
}
/**
* Sets the secondary (right) shadow drawable.
*
* @param d the new shadow drawable
*/
public void setSecondaryShadowDrawable(Drawable d) {
mViewBehind.setSecondaryShadowDrawable(d);
}
/**
* Sets the behind canvas transformer.
*
* @param t the new behind canvas transformer
*/
public void setBehindCanvasTransformer(CanvasTransformer t) {
mViewBehind.setCanvasTransformer(t);
}
/**
* Set the secondary behind view (right menu) content to the given View.
*
* @param view The desired content to display.
*/
public void setSecondaryMenu(View view) {
mViewBehind.setSecondaryContent(view);
// mViewBehind.invalidate();
}
/**
* Sets the selector drawable.
*
* @param res a resource ID for the selector drawable
*/
public void setSelectorDrawable(int res) {
mViewBehind.setSelectorBitmap(BitmapFactory.decodeResource(getResources(), res));
}
/**
* Enables or disables whether the selector is drawn
*
* @param b true to draw the selector, false to not draw the selector
*/
public void setSelectorEnabled(boolean b) {
mViewBehind.setSelectorEnabled(true);
}
/**
* Gets the behind scroll scale.
*
* @return The scale of the parallax scroll
*/
public float getBehindScrollScale() {
return mViewBehind.getScrollScale();
}
/**
* Gets the behind offset.
*
* @return The margin on the right of the screen that the behind view scrolls to
*/
public int getBehindOffset() {
return ((RelativeLayout.LayoutParams) mViewBehind.getLayoutParams()).rightMargin;
}
/**
* Returns the current side that the SlidingMenu is on.
*
* @return the current mode, either SlidingMenu.LEFT or SlidingMenu.RIGHT
*/
public int getMode() {
return mViewBehind.getMode();
}
/**
* Sets which side the SlidingMenu should appear on.
*
* @param mode must be either SlidingMenu.LEFT or SlidingMenu.RIGHT
*/
public void setMode(int mode) {
if (mode != LEFT && mode != RIGHT && mode != LEFT_RIGHT) {
throw new IllegalStateException("SlidingMenu mode must be LEFT, RIGHT, or LEFT_RIGHT");
}
mViewBehind.setMode(mode);
}
/**
* Retrieves the current secondary menu (right).
*
* @return the current menu
*/
public View getSecondaryMenu() {
return mViewBehind.getSecondaryContent();
}
/**
* Enables or disables the SlidingMenu's fade in and out
*
* @param b true to enable fade, false to disable it
*/
public void setFadeEnabled(boolean b) {
mViewBehind.setFadeEnabled(b);
}
/**
* Gets the touch mode margin threshold
*
* @return the touch mode margin threshold
*/
public int getTouchmodeMarginThreshold() {
return mViewBehind.getMarginThreshold();
}
/**
* Sets how much the SlidingMenu fades in and out. Fade must be enabled, see {@link
* #setFadeEnabled(boolean) setFadeEnabled(boolean)}
*
* @param f the new fade degree, between 0.0f and 1.0f
*/
public void setFadeDegree(float f) {
mViewBehind.setFadeDegree(f);
}
/**
* Set the touch mode margin threshold
*
* @param touchmodeMarginThreshold touch mode margin threshold
*/
public void setTouchmodeMarginThreshold(int touchmodeMarginThreshold) {
mViewBehind.setMarginThreshold(touchmodeMarginThreshold);
}
/**
* Sets the selected view. The selector will be drawn here
*
* @param v the new selected view
*/
public void setSelectedView(View v) {
mViewBehind.setSelectedView(v);
}
/**
* Sets the behind scroll scale.
*
* @param f The scale of the parallax scroll (i.e. 1.0f scrolls 1 pixel for every 1 pixel that the
* above view scrolls and 0.0f scrolls 0 pixels)
*/
public void setBehindScrollScale(float f) {
if (f < 0 && f > 1) throw new IllegalStateException("ScrollScale must be between 0 and 1");
mViewBehind.setScrollScale(f);
}
/**
* Sets the selector drawable.
*
* @param b the new selector bitmap
*/
public void setSelectorBitmap(Bitmap b) {
mViewBehind.setSelectorBitmap(b);
}
/**
* Retrieves the main menu.
*
* @return the main menu
*/
public View getMenu() {
return mViewBehind.getContent();
}
