am 2477fd69: Merge change Ic31c11ad into eclair (0b66ea65) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/widget/SlidingTab.java

+31 −20

Original line number	Diff line number	Diff line
		@@ -38,7 +38,10 @@ import com.android.internal.R;
		/**
		* A special widget containing two Sliders and a threshold for each. Moving either slider beyond
		* the threshold will cause the registered OnTriggerListener.onTrigger() to be called with
		* {@link OnTriggerListener#LEFT_HANDLE} or {@link OnTriggerListener#RIGHT_HANDLE} to be called.
		* whichHandle being {@link OnTriggerListener#LEFT_HANDLE} or {@link OnTriggerListener#RIGHT_HANDLE}
		* Equivalently, selecting a tab will result in a call to
		* {@link OnTriggerListener#onGrabbedStateChange(View, int)} with one of these two states. Releasing
		* the tab will result in whichHandle being {@link OnTriggerListener#NO_HANDLE}.
		*
		*/
		public class SlidingTab extends ViewGroup {
		@@ -50,7 +53,7 @@ public class SlidingTab extends ViewGroup {
		private static final int MSG_ANIMATE = 100;

		// TODO: Make these configurable
		private static final float TARGET_ZONE = 2.0f / 3.0f;
		private static final float THRESHOLD = 2.0f / 3.0f;
		private static final long VIBRATE_SHORT = 30;
		private static final long VIBRATE_LONG = 40;

		@@ -71,35 +74,35 @@ public class SlidingTab extends ViewGroup {
		private Slider mRightSlider;
		private Slider mCurrentSlider;
		private boolean mTracking;
		private float mTargetZone;
		private float mThreshold;
		private Slider mOtherSlider;
		private boolean mAnimating;

		/**
		* Interface definition for a callback to be invoked when a tab is triggered
		* by moving it beyond a target zone.
		* by moving it beyond a threshold.
		*/
		public interface OnTriggerListener {
		/**
		* The interface was triggered because the user let go of the handle without reaching the
		* target zone.
		* threshold.
		*/
		public static final int NO_HANDLE = 0;

		/**
		* The interface was triggered because the user grabbed the left handle and moved it past
		* the target zone.
		* the threshold.
		*/
		public static final int LEFT_HANDLE = 1;

		/**
		* The interface was triggered because the user grabbed the right handle and moved it past
		* the target zone.
		* the threshold.
		*/
		public static final int RIGHT_HANDLE = 2;

		/**
		* Called when the user moves a handle beyond the target zone.
		* Called when the user moves a handle beyond the threshold.
		*
		* @param v The view that was triggered.
		* @param whichHandle Which "dial handle" the user grabbed,
		@@ -146,6 +149,7 @@ public class SlidingTab extends ViewGroup {
		private final ImageView tab;
		private final TextView text;
		private final ImageView target;
		private int currentState = STATE_NORMAL;

		/**
		* Constructor
		@@ -223,6 +227,7 @@ public class SlidingTab extends ViewGroup {
		} else {
		text.setTextAppearance(text.getContext(), R.style.TextAppearance_SlidingTabNormal);
		}
		currentState = state;
		}

		void showTarget() {
		@@ -260,8 +265,8 @@ public class SlidingTab extends ViewGroup {
		final int parentWidth = r - l;
		final int parentHeight = b - t;

		final int leftTarget = (int) (TARGET_ZONE * parentWidth) - targetWidth + handleWidth / 2;
		final int rightTarget = (int) ((1.0f - TARGET_ZONE) * parentWidth) - handleWidth / 2;
		final int leftTarget = (int) (THRESHOLD * parentWidth) - targetWidth + handleWidth / 2;
		final int rightTarget = (int) ((1.0f - THRESHOLD) * parentWidth) - handleWidth / 2;
		final int left = (parentWidth - handleWidth) / 2;
		final int right = left + handleWidth;

		@@ -286,8 +291,8 @@ public class SlidingTab extends ViewGroup {
		// vertical
		final int targetLeft = (parentWidth - targetWidth) / 2;
		final int targetRight = (parentWidth + targetWidth) / 2;
		final int top = (int) (TARGET_ZONE * parentHeight) + handleHeight / 2 - targetHeight;
		final int bottom = (int) ((1.0f - TARGET_ZONE) * parentHeight) - handleHeight / 2;
		final int top = (int) (THRESHOLD * parentHeight) + handleHeight / 2 - targetHeight;
		final int bottom = (int) ((1.0f - THRESHOLD) * parentHeight) - handleHeight / 2;
		if (alignment == ALIGN_TOP) {
		tab.layout(left, 0, right, handleHeight);
		text.layout(left, 0 - parentHeight, right, 0);
		@@ -300,6 +305,10 @@ public class SlidingTab extends ViewGroup {
		}
		}

		public void updateDrawableStates() {
		setState(currentState);
		}

		public int getTabWidth() {
		return tab.getDrawable().getIntrinsicWidth();
		}
		@@ -400,12 +409,12 @@ public class SlidingTab extends ViewGroup {
		if (leftHit) {
		mCurrentSlider = mLeftSlider;
		mOtherSlider = mRightSlider;
		mTargetZone = isHorizontal() ? TARGET_ZONE : 1.0f - TARGET_ZONE;
		mThreshold = isHorizontal() ? THRESHOLD : 1.0f - THRESHOLD;
		setGrabbedState(OnTriggerListener.LEFT_HANDLE);
		} else {
		mCurrentSlider = mRightSlider;
		mOtherSlider = mLeftSlider;
		mTargetZone = isHorizontal() ? 1.0f - TARGET_ZONE : TARGET_ZONE;
		mThreshold = isHorizontal() ? 1.0f - THRESHOLD : THRESHOLD;
		setGrabbedState(OnTriggerListener.RIGHT_HANDLE);
		}
		mCurrentSlider.setState(Slider.STATE_PRESSED);
		@@ -429,16 +438,16 @@ public class SlidingTab extends ViewGroup {
		case MotionEvent.ACTION_MOVE:
		moveHandle(x, y);
		float position = isHorizontal() ? x : y;
		float target = mTargetZone * (isHorizontal() ? getWidth() : getHeight());
		boolean targetZoneReached;
		float target = mThreshold * (isHorizontal() ? getWidth() : getHeight());
		boolean thresholdReached;
		if (isHorizontal()) {
		targetZoneReached = mCurrentSlider == mLeftSlider ?
		thresholdReached = mCurrentSlider == mLeftSlider ?
		position > target : position < target;
		} else {
		targetZoneReached = mCurrentSlider == mLeftSlider ?
		thresholdReached = mCurrentSlider == mLeftSlider ?
		position < target : position > target;
		}
		if (!mTriggered && targetZoneReached) {
		if (!mTriggered && thresholdReached) {
		mTriggered = true;
		mTracking = false;
		mCurrentSlider.setState(Slider.STATE_ACTIVE);
		@@ -527,6 +536,7 @@ public class SlidingTab extends ViewGroup {
		mLeftSlider.setTarget(targetId);
		mLeftSlider.setBarBackgroundResource(barId);
		mLeftSlider.setTabBackgroundResource(tabId);
		mLeftSlider.updateDrawableStates();
		}

		/**
		@@ -554,6 +564,7 @@ public class SlidingTab extends ViewGroup {
		mRightSlider.setTarget(targetId);
		mRightSlider.setBarBackgroundResource(barId);
		mRightSlider.setTabBackgroundResource(tabId);
		mRightSlider.updateDrawableStates();
		}

		/**