@Override
public boolean onTouchEvent(MotionEvent event) {
// Call the superclass onTouchEvent first, because sometimes it changes the state to
// isPressed() on an ACTION_UP
boolean result = super.onTouchEvent(event);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// So that the pressed outline is visible immediately on setStayPressed(),
// we pre-create it on ACTION_DOWN (it takes a small but perceptible amount of time
// to create it)
if (mPressedBackground == null) {
mPressedBackground = mOutlineHelper.createMediumDropShadow(this);
}
mLongPressHelper.postCheckForLongPress();
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
// If we've touched down and up on an item, and it's still not "pressed", then
// destroy the pressed outline
if (!isPressed()) {
mPressedBackground = null;
}
mLongPressHelper.cancelLongPress();
break;
case MotionEvent.ACTION_MOVE:
if (!Utilities.pointInView(this, event.getX(), event.getY(), mSlop)) {
mLongPressHelper.cancelLongPress();
}
break;
}
return result;
}
private void init() {
mLongPressHelper = new CheckLongPressHelper(this);
mOutlineHelper = HolographicOutlineHelper.obtain(getContext());
if (mCustomShadowsEnabled) {
setShadowLayer(SHADOW_LARGE_RADIUS, 0.0f, SHADOW_Y_OFFSET, SHADOW_LARGE_COLOUR);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (super.onKeyDown(keyCode, event)) {
// Pre-create shadow so show immediately on click.
if (mPressedBackground == null) {
mPressedBackground = mOutlineHelper.createMediumDropShadow(this);
}
return true;
}
return false;
}
/**
* Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
* Responsibility for the bitmap is transferred to the caller.
*/
private Bitmap createGlowingOutline(Canvas canvas, int outlineColor, int glowColor) {
final int padding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
final Bitmap b =
Bitmap.createBitmap(getWidth() + padding, getHeight() + padding, Bitmap.Config.ARGB_8888);
canvas.setBitmap(b);
drawWithPadding(canvas, padding);
mOutlineHelper.applyExtraThickExpensiveOutlineWithBlur(b, canvas, glowColor, outlineColor);
canvas.setBitmap(null);
return b;
}
private void init() {
mLongPressHelper = new CheckLongPressHelper(this);
mBackground = getBackground();
mOutlineHelper = HolographicOutlineHelper.obtain(getContext());
final Resources res = getContext().getResources();
mFocusedOutlineColor =
mFocusedGlowColor =
mPressedOutlineColor = mPressedGlowColor = res.getColor(R.color.outline_color);
setShadowLayer(SHADOW_LARGE_RADIUS, 0.0f, SHADOW_Y_OFFSET, SHADOW_LARGE_COLOUR);
}
