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RotarySelector widget: add callback for "grabbed" state changes.

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This is the frameworks/base part of the fix for Bug 2158434: add a new
callback to the OnDialTriggerListener interface, so the RotarySelector can
tell the app about state changes between NOTHING_GRABBED and
LEFT_HANDLE_GRABBED and RIGHT_HANDLE_GRABBED.

BUG=2158434
DRNO=timsullivan

TESTED=regular incoming calls, call waiting calls, answering a call,
       rejecting a call.  Also verified I didn't affect the
       lock screen at all.
This commit is contained in:
David Brown
2009-10-01 19:25:54 -07:00
parent 3d7bb3a5e4
commit 88e037577f
1 changed files with 32 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
core/java/com/android/internal/widget/RotarySelector.java
View File

@ -93,9 +93,9 @@ public class RotarySelector extends View {
* If the user is currently dragging something.
*/
private int mGrabbedState = NOTHING_GRABBED;
private static final int NOTHING_GRABBED = 0;
private static final int LEFT_HANDLE_GRABBED = 1;
private static final int RIGHT_HANDLE_GRABBED = 2;
public static final int NOTHING_GRABBED = 0;
public static final int LEFT_HANDLE_GRABBED = 1;
public static final int RIGHT_HANDLE_GRABBED = 2;
/**
* Whether the user has triggered something (e.g dragging the left handle all the way over to
@ -522,12 +522,12 @@ public class RotarySelector extends View {
}
if (eventX < mLeftHandleX + hitWindow) {
mRotaryOffsetX = eventX - mLeftHandleX;
mGrabbedState = LEFT_HANDLE_GRABBED;
setGrabbedState(LEFT_HANDLE_GRABBED);
invalidate();
vibrate(VIBRATE_SHORT);
} else if (eventX > mRightHandleX - hitWindow) {
mRotaryOffsetX = eventX - mRightHandleX;
mGrabbedState = RIGHT_HANDLE_GRABBED;
setGrabbedState(RIGHT_HANDLE_GRABBED);
invalidate();
vibrate(VIBRATE_SHORT);
}
@ -591,7 +591,7 @@ public class RotarySelector extends View {
startAnimation(eventX - mRightHandleX, 0, SNAP_BACK_ANIMATION_DURATION_MILLIS);
}
mRotaryOffsetX = 0;
mGrabbedState = NOTHING_GRABBED;
setGrabbedState(NOTHING_GRABBED);
invalidate();
if (mVelocityTracker != null) {
mVelocityTracker.recycle(); // wishin' we had generational GC
@ -617,7 +617,7 @@ public class RotarySelector extends View {
mAnimationDuration = duration;
mAnimatingDeltaXStart = startX;
mAnimatingDeltaXEnd = endX;
mGrabbedState = NOTHING_GRABBED;
setGrabbedState(NOTHING_GRABBED);
mDimplesOfFling = 0;
invalidate();
}
@ -628,7 +628,7 @@ public class RotarySelector extends View {
mAnimationDuration = 1000 * (endX - startX) / pixelsPerSecond;
mAnimatingDeltaXStart = startX;
mAnimatingDeltaXEnd = endX;
mGrabbedState = NOTHING_GRABBED;
setGrabbedState(NOTHING_GRABBED);
invalidate();
}
@ -667,7 +667,7 @@ public class RotarySelector extends View {
mAnimating = false;
mRotaryOffsetX = 0;
mDimplesOfFling = 0;
mGrabbedState = NOTHING_GRABBED;
setGrabbedState(NOTHING_GRABBED);
mTriggered = false;
}
@ -715,6 +715,19 @@ public class RotarySelector extends View {
}
}
/**
* Sets the current grabbed state, and dispatches a grabbed state change
* event to our listener.
*/
private void setGrabbedState(int newState) {
if (newState != mGrabbedState) {
mGrabbedState = newState;
if (mOnDialTriggerListener != null) {
mOnDialTriggerListener.onGrabbedStateChange(this, mGrabbedState);
}
}
}
/**
* Interface definition for a callback to be invoked when the dial
* is "triggered" by rotating it one way or the other.
@ -740,6 +753,16 @@ public class RotarySelector extends View {
* either {@link #LEFT_HANDLE}, {@link #RIGHT_HANDLE}.
*/
void onDialTrigger(View v, int whichHandle);
/**
* Called when the "grabbed state" changes (i.e. when
* the user either grabs or releases one of the handles.)
*
* @param v the view that was triggered
* @param grabbedState the new state: either {@link #NOTHING_GRABBED},
* {@link #LEFT_HANDLE_GRABBED}, or {@link #RIGHT_HANDLE_GRABBED}.
*/
void onGrabbedStateChange(View v, int grabbedState);
}