Example usage for android.graphics Rect Rect

List of usage examples for android.graphics Rect Rect

  1. HOME
  2. Java
  3. android
  4. android.graphics.*
  5. Rect
  6. Rect

Introduction

In this page you can find the example usage for android.graphics Rect Rect.

Prototype

public Rect()

Source Link

Document

Create a new empty Rect.

Usage

From source file:com.kabootar.GlassMemeGenerator.ImageOverlay.java

/**
 * Draws the given string centered, as big as possible, on either the top or
 * bottom 20% of the image given./*  w  ww  .j  a  v  a2s  .c o  m*/
 */
private static void drawStringCentered(Canvas g, String text, Bitmap image, boolean top, Context baseContext)
        throws InterruptedException {
    if (text == null)
        text = "";

    int height = 0;
    int fontSize = MAX_FONT_SIZE;
    int maxCaptionHeight = image.getHeight() / 5;
    int maxLineWidth = image.getWidth() - SIDE_MARGIN * 2;
    String formattedString = "";
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);

    Paint stkPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    stkPaint.setStyle(STROKE);
    stkPaint.setStrokeWidth(8);
    stkPaint.setColor(Color.BLACK);

    //Typeface tf = Typeface.create("Arial", Typeface.BOLD);
    Typeface tf = Typeface.createFromAsset(baseContext.getAssets(), "fonts/impact.ttf");

    paint.setTypeface(tf);
    stkPaint.setTypeface(tf);
    do {

        paint.setTextSize(fontSize);

        // first inject newlines into the text to wrap properly
        StringBuilder sb = new StringBuilder();
        int left = 0;
        int right = text.length() - 1;
        while (left < right) {

            String substring = text.substring(left, right + 1);
            Rect stringBounds = new Rect();
            paint.getTextBounds(substring, 0, substring.length(), stringBounds);
            while (stringBounds.width() > maxLineWidth) {
                if (Thread.currentThread().isInterrupted()) {
                    throw new InterruptedException();
                }

                // look for a space to break the line
                boolean spaceFound = false;
                for (int i = right; i > left; i--) {
                    if (text.charAt(i) == ' ') {
                        right = i - 1;
                        spaceFound = true;
                        break;
                    }
                }
                substring = text.substring(left, right + 1);
                paint.getTextBounds(substring, 0, substring.length(), stringBounds);

                // If we're down to a single word and we are still too wide,
                // the font is just too big.
                if (!spaceFound && stringBounds.width() > maxLineWidth) {
                    break;
                }
            }
            sb.append(substring).append("\n");
            left = right + 2;
            right = text.length() - 1;
        }

        formattedString = sb.toString();

        // now determine if this font size is too big for the allowed height
        height = 0;
        for (String line : formattedString.split("\n")) {
            Rect stringBounds = new Rect();
            paint.getTextBounds(line, 0, line.length(), stringBounds);
            height += stringBounds.height();
        }
        fontSize--;
    } while (height > maxCaptionHeight);

    // draw the string one line at a time
    int y = 0;
    if (top) {
        y = TOP_MARGIN;
    } else {
        y = image.getHeight() - height - BOTTOM_MARGIN;
    }
    for (String line : formattedString.split("\n")) {
        // Draw each string twice for a shadow effect
        Rect stringBounds = new Rect();
        paint.getTextBounds(line, 0, line.length(), stringBounds);
        //paint.setColor(Color.BLACK);
        //g.drawText(line, (image.getWidth() - (int) stringBounds.width()) / 2 + 2, y + stringBounds.height() + 2, paint);

        paint.setColor(Color.WHITE);
        g.drawText(line, (image.getWidth() - (int) stringBounds.width()) / 2, y + stringBounds.height(), paint);

        //stroke
        Rect strokeBounds = new Rect();
        stkPaint.setTextSize(fontSize);
        stkPaint.getTextBounds(line, 0, line.length(), strokeBounds);
        g.drawText(line, (image.getWidth() - (int) strokeBounds.width()) / 2, y + strokeBounds.height(),
                stkPaint);

        y += stringBounds.height();
    }
}

From source file:android.example.com.animationdemos.ZoomActivity.java

/**
 * "Zooms" in a thumbnail view by assigning the high resolution image to a hidden "zoomed-in"
 * image view and animating its bounds to fit the entire activity content area. More
 * specifically:/*  w  ww . ja v a  2 s.co m*/
 * <p/>
 * <ol>
 * <li>Assign the high-res image to the hidden "zoomed-in" (expanded) image view.</li>
 * <li>Calculate the starting and ending bounds for the expanded view.</li>
 * <li>Animate each of four positioning/sizing properties (X, Y, SCALE_X, SCALE_Y)
 * simultaneously, from the starting bounds to the ending bounds.</li>
 * <li>Zoom back out by running the reverse animation on click.</li>
 * </ol>
 *
 * @param thumbView  The thumbnail view to zoom in.
 * @param imageResId The high-resolution version of the image represented by the thumbnail.
 */
private void zoomImageFromThumb(final View thumbView, int imageResId) {
    // If there's an animation in progress, cancel it immediately and proceed with this one.
    if (mCurrentAnimator != null) {
        mCurrentAnimator.cancel();
    }
    // Load the high-resolution "zoomed-in" image.
    final ImageView expandedImageView = (ImageView) findViewById(R.id.expanded_image);
    expandedImageView.setImageResource(imageResId);
    // Calculate the starting and ending bounds for the zoomed-in image. This step
    // involves lots of math. Yay, math.
    final Rect startBounds = new Rect();
    final Rect finalBounds = new Rect();
    final Point globalOffset = new Point();
    // The start bounds are the global visible rectangle of the thumbnail, and the
    // final bounds are the global visible rectangle of the container view. Also
    // set the container view's offset as the origin for the bounds, since that's
    // the origin for the positioning animation properties (X, Y).
    thumbView.getGlobalVisibleRect(startBounds);
    findViewById(R.id.container).getGlobalVisibleRect(finalBounds, globalOffset);
    startBounds.offset(-globalOffset.x, -globalOffset.y);
    finalBounds.offset(-globalOffset.x, -globalOffset.y);
    // Adjust the start bounds to be the same aspect ratio as the final bounds using the
    // "center crop" technique. This prevents undesirable stretching during the animation.
    // Also calculate the start scaling factor (the end scaling factor is always 1.0).
    float startScale;
    if ((float) finalBounds.width() / finalBounds.height() > (float) startBounds.width()
            / startBounds.height()) {
        // Extend start bounds horizontally
        startScale = (float) startBounds.height() / finalBounds.height();
        float startWidth = startScale * finalBounds.width();
        float deltaWidth = (startWidth - startBounds.width()) / 2;
        startBounds.left -= deltaWidth;
        startBounds.right += deltaWidth;
    } else {
        // Extend start bounds vertically
        startScale = (float) startBounds.width() / finalBounds.width();
        float startHeight = startScale * finalBounds.height();
        float deltaHeight = (startHeight - startBounds.height()) / 2;
        startBounds.top -= deltaHeight;
        startBounds.bottom += deltaHeight;
    }
    // Hide the thumbnail and show the zoomed-in view. When the animation begins,
    // it will position the zoomed-in view in the place of the thumbnail.
    thumbView.setAlpha(0f);
    expandedImageView.setVisibility(View.VISIBLE);
    // Set the pivot point for SCALE_X and SCALE_Y transformations to the top-left corner of
    // the zoomed-in view (the default is the center of the view).
    expandedImageView.setPivotX(0f);
    expandedImageView.setPivotY(0f);
    // Construct and run the parallel animation of the four translation and scale properties
    // (X, Y, SCALE_X, and SCALE_Y).
    AnimatorSet set = new AnimatorSet();
    set.play(ObjectAnimator.ofFloat(expandedImageView, View.X, startBounds.left, finalBounds.left))
            .with(ObjectAnimator.ofFloat(expandedImageView, View.Y, startBounds.top, finalBounds.top))
            .with(ObjectAnimator.ofFloat(expandedImageView, View.SCALE_X, startScale, 1f))
            .with(ObjectAnimator.ofFloat(expandedImageView, View.SCALE_Y, startScale, 1f));
    set.setDuration(mShortAnimationDuration);
    set.setInterpolator(new DecelerateInterpolator());
    set.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animation) {
            mCurrentAnimator = null;
        }

        @Override
        public void onAnimationCancel(Animator animation) {
            mCurrentAnimator = null;
        }
    });
    set.start();
    mCurrentAnimator = set;
    // Upon clicking the zoomed-in image, it should zoom back down to the original bounds
    // and show the thumbnail instead of the expanded image.
    final float startScaleFinal = startScale;
    expandedImageView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (mCurrentAnimator != null) {
                mCurrentAnimator.cancel();
            }
            // Animate the four positioning/sizing properties in parallel, back to their
            // original values.
            AnimatorSet set = new AnimatorSet();
            set.play(ObjectAnimator.ofFloat(expandedImageView, View.X, startBounds.left))
                    .with(ObjectAnimator.ofFloat(expandedImageView, View.Y, startBounds.top))
                    .with(ObjectAnimator.ofFloat(expandedImageView, View.SCALE_X, startScaleFinal))
                    .with(ObjectAnimator.ofFloat(expandedImageView, View.SCALE_Y, startScaleFinal));
            set.setDuration(mShortAnimationDuration);
            set.setInterpolator(new DecelerateInterpolator());
            set.addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    thumbView.setAlpha(1f);
                    expandedImageView.setVisibility(View.GONE);
                    mCurrentAnimator = null;
                }

                @Override
                public void onAnimationCancel(Animator animation) {
                    thumbView.setAlpha(1f);
                    expandedImageView.setVisibility(View.GONE);
                    mCurrentAnimator = null;
                }
            });
            set.start();
            mCurrentAnimator = set;
        }
    });
}

From source file:android.support.design.widget.SubtitleCollapsingTextHelper.java

public SubtitleCollapsingTextHelper(View view) {
    mView = view;/*from www .j  a  va 2 s .c  om*/
    mTitlePaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.SUBPIXEL_TEXT_FLAG);
    mSubPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.SUBPIXEL_TEXT_FLAG);
    mCollapsedBounds = new Rect();
    mExpandedBounds = new Rect();
    mCurrentBounds = new RectF();
}

From source file:android.support.design.widget.CustomCollapsingTextHelper.java

public CustomCollapsingTextHelper(View view) {
    mView = view;//from www .  j ava 2s .co  m
    mTitlePaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.SUBPIXEL_TEXT_FLAG);
    mSubPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.SUBPIXEL_TEXT_FLAG);
    mCollapsedBounds = new Rect();
    mExpandedBounds = new Rect();
    mCurrentBounds = new RectF();
}

From source file:com.truebanana.bitmap.BitmapUtils.java

public static Bitmap decodeStream(InputStream inputStream, int targetWidth, int targetHeight) {
    try {//from   w  ww.ja  v  a2 s  . c om
        byte[] bytes = IOUtils.toByteArray(inputStream);
        InputStream is1 = new ByteArrayInputStream(bytes);
        InputStream is2 = new ByteArrayInputStream(bytes);
        if (targetWidth > 1 && targetHeight > 1) {
            BitmapFactory.Options options = getBounds(is1);
            options.inJustDecodeBounds = false;
            options.inSampleSize = getInSampleSize(options, targetWidth, targetHeight);
            return BitmapFactory.decodeStream(is2, new Rect(), options);
        } else {
            return BitmapFactory.decodeStream(is2);
        }
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:com.shizhefei.view.largeimage.ImageManager.java

private Rect madeRect(Bitmap bitmap, int row, int col, int scaleKey, float imageScale) {
    int size = scaleKey * BASE_BLOCKSIZE;
    Rect rect = new Rect();
    rect.left = (col * size);// ww  w .j a v  a  2 s.c o  m
    rect.top = (row * size);
    rect.right = rect.left + bitmap.getWidth() * scaleKey;
    rect.bottom = rect.top + bitmap.getHeight() * scaleKey;
    return rect;
}

From source file:br.com.devmix.baseapp.listener.OnSwipeableRecyclerViewTouchListener.java

private boolean handleTouchEvent(MotionEvent motionEvent) {
    if (mViewWidth < 2) {
        mViewWidth = mRecyclerView.getWidth();
    }// w  w w .  j  a  v  a 2s  . c  o  m

    switch (motionEvent.getActionMasked()) {
    case MotionEvent.ACTION_DOWN: {
        if (mPaused) {
            break;
        }

        // Find the child view that was touched (perform a hit test)
        Rect rect = new Rect();
        int childCount = mRecyclerView.getChildCount();
        int[] listViewCoords = new int[2];
        mRecyclerView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = mRecyclerView.getChildAt(i);
            child.getHitRect(rect);
            if (rect.contains(x, y)) {
                mDownView = child;
                break;
            }
        }

        if (mDownView != null && mAnimatingPosition != mRecyclerView.getChildAdapterPosition(mDownView)) {
            mAlpha = ViewCompat.getAlpha(mDownView);
            mDownX = motionEvent.getRawX();
            mDownY = motionEvent.getRawY();
            mDownPosition = mRecyclerView.getChildAdapterPosition(mDownView);
            if (mSwipeListener.canSwipe(mDownPosition)) {
                mVelocityTracker = VelocityTracker.obtain();
                mVelocityTracker.addMovement(motionEvent);
            } else {
                mDownView = null;
            }
        }
        break;
    }

    case MotionEvent.ACTION_CANCEL: {
        if (mVelocityTracker == null) {
            break;
        }

        if (mDownView != null && mSwiping) {
            // cancel
            ViewCompat.animate(mDownView).translationX(0).alpha(mAlpha).setDuration(mAnimationTime)
                    .setListener(null);
        }
        mVelocityTracker.recycle();
        mVelocityTracker = null;
        mDownX = 0;
        mDownY = 0;
        mDownView = null;
        mDownPosition = ListView.INVALID_POSITION;
        mSwiping = false;
        break;
    }

    case MotionEvent.ACTION_UP: {
        if (mVelocityTracker == null) {
            break;
        }

        mFinalDelta = motionEvent.getRawX() - mDownX;
        mVelocityTracker.addMovement(motionEvent);
        mVelocityTracker.computeCurrentVelocity(1000);
        float velocityX = mVelocityTracker.getXVelocity();
        float absVelocityX = Math.abs(velocityX);
        float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
        boolean dismiss = false;
        boolean dismissRight = false;
        if (Math.abs(mFinalDelta) > mViewWidth / 2 && mSwiping) {
            dismiss = true;
            dismissRight = mFinalDelta > 0;
        } else if (mMinFlingVelocity <= absVelocityX && absVelocityX <= mMaxFlingVelocity
                && absVelocityY < absVelocityX && mSwiping) {
            // dismiss only if flinging in the same direction as dragging
            dismiss = (velocityX < 0) == (mFinalDelta < 0);
            dismissRight = mVelocityTracker.getXVelocity() > 0;
        }
        if (dismiss && mDownPosition != mAnimatingPosition && mDownPosition != ListView.INVALID_POSITION) {
            // dismiss
            final View downView = mDownView; // mDownView gets null'd before animation ends
            final int downPosition = mDownPosition;
            ++mDismissAnimationRefCount;
            mAnimatingPosition = mDownPosition;
            ViewCompat.animate(mDownView).translationX(dismissRight ? mViewWidth : -mViewWidth).alpha(0)
                    .setDuration(mAnimationTime).setListener(new ViewPropertyAnimatorListenerAdapter() {
                        @Override
                        public void onAnimationEnd(View view) {
                            performDismiss(downView, downPosition);
                        }
                    });
        } else {
            // cancel
            ViewCompat.animate(mDownView).translationX(0).alpha(mAlpha).setDuration(mAnimationTime)
                    .setListener(null);
        }
        mVelocityTracker.recycle();
        mVelocityTracker = null;
        mDownX = 0;
        mDownY = 0;
        mDownView = null;
        mDownPosition = ListView.INVALID_POSITION;
        mSwiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (mVelocityTracker == null || mPaused) {
            break;
        }

        mVelocityTracker.addMovement(motionEvent);
        float deltaX = motionEvent.getRawX() - mDownX;
        float deltaY = motionEvent.getRawY() - mDownY;
        if (!mSwiping && Math.abs(deltaX) > mSlop && Math.abs(deltaY) < Math.abs(deltaX) / 2) {
            mSwiping = true;
            mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
        }

        if (mSwiping) {
            ViewCompat.setTranslationX(mDownView, deltaX - mSwipingSlop);
            ViewCompat.setAlpha(mDownView,
                    Math.max(0f, Math.min(mAlpha, mAlpha * (1f - Math.abs(deltaX) / mViewWidth))));
            return true;
        }
        break;
    }
    }

    return false;
}

From source file:au.com.zacher.popularmovies.activity.layout.CollapsingTitleLayout.java

public CollapsingTitleLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    this.mTextPaint = new TextPaint();
    this.mTextPaint.setAntiAlias(true);

    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CollapsingTitleLayout);

    this.mExpandedMarginLeft = this.mExpandedMarginRight = this.mExpandedMarginBottom = a
            .getDimensionPixelSize(R.styleable.CollapsingTitleLayout_expandedMargin, 0);

    final boolean isRtl = ViewCompat.getLayoutDirection(this) == ViewCompat.LAYOUT_DIRECTION_RTL;
    if (a.hasValue(R.styleable.CollapsingTitleLayout_expandedMarginStart)) {
        final int marginStart = a.getDimensionPixelSize(R.styleable.CollapsingTitleLayout_expandedMarginStart,
                0);//from  w ww.  ja  v  a  2s .co  m
        if (isRtl) {
            this.mExpandedMarginRight = marginStart;
        } else {
            this.mExpandedMarginLeft = marginStart;
        }
    }
    if (a.hasValue(R.styleable.CollapsingTitleLayout_expandedMarginEnd)) {
        final int marginEnd = a.getDimensionPixelSize(R.styleable.CollapsingTitleLayout_expandedMarginEnd, 0);
        if (isRtl) {
            this.mExpandedMarginLeft = marginEnd;
        } else {
            this.mExpandedMarginRight = marginEnd;
        }
    }
    if (a.hasValue(R.styleable.CollapsingTitleLayout_expandedMarginBottom)) {
        this.mExpandedMarginBottom = a
                .getDimensionPixelSize(R.styleable.CollapsingTitleLayout_expandedMarginBottom, 0);
    }

    final int tp = a.getResourceId(R.styleable.CollapsingTitleLayout_android_textAppearance,
            android.R.style.TextAppearance);
    this.setTextAppearance(tp);

    if (a.hasValue(R.styleable.CollapsingTitleLayout_collapsedTextSize)) {
        this.mCollapsedTitleTextSize = a
                .getDimensionPixelSize(R.styleable.CollapsingTitleLayout_collapsedTextSize, 0);
    }

    this.mRequestedExpandedTitleTextSize = a.getDimensionPixelSize(
            R.styleable.CollapsingTitleLayout_expandedTextSize, this.mCollapsedTitleTextSize);

    final int interpolatorId = a.getResourceId(R.styleable.CollapsingTitleLayout_textSizeInterpolator,
            android.R.anim.accelerate_interpolator);
    this.mTextSizeInterpolator = AnimationUtils.loadInterpolator(context, interpolatorId);

    a.recycle();

    this.mToolbarContentBounds = new Rect();

    this.setWillNotDraw(false);
}

From source file:br.com.halph.agendafeliz.util.SwipeableRecyclerViewTouchListener.java

private boolean handleTouchEvent(MotionEvent motionEvent) {
    if (mViewWidth < 2) {
        mViewWidth = mRecyclerView.getWidth();
    }/*from  www .ja va  2  s  .com*/

    switch (motionEvent.getActionMasked()) {
    case MotionEvent.ACTION_DOWN: {
        if (mPaused) {
            break;
        }

        // Find the child view that was touched (perform a hit test)
        Rect rect = new Rect();
        int childCount = mRecyclerView.getChildCount();
        int[] listViewCoords = new int[2];
        mRecyclerView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = mRecyclerView.getChildAt(i);
            child.getHitRect(rect);
            if (rect.contains(x, y)) {
                mDownView = child;
                break;
            }
        }

        if (mDownView != null && mAnimatingPosition != mRecyclerView.getChildLayoutPosition(mDownView)) {
            mAlpha = ViewCompat.getAlpha(mDownView);
            mDownX = motionEvent.getRawX();
            mDownY = motionEvent.getRawY();
            mDownPosition = mRecyclerView.getChildLayoutPosition(mDownView);
            mSwipingLeft = mSwipeListener.canSwipeLeft(mDownPosition);
            mSwipingRight = mSwipeListener.canSwipeRight(mDownPosition);
            if (mSwipingLeft || mSwipingRight) {
                mVelocityTracker = VelocityTracker.obtain();
                mVelocityTracker.addMovement(motionEvent);
            } else {
                mDownView = null;
            }
        }
        break;
    }

    case MotionEvent.ACTION_CANCEL: {
        if (mVelocityTracker == null) {
            break;
        }

        if (mDownView != null && mSwiping) {
            // cancel
            ViewCompat.animate(mDownView).translationX(0).alpha(mAlpha).setDuration(mAnimationTime)
                    .setListener(null);
        }
        mVelocityTracker.recycle();
        mVelocityTracker = null;
        mDownX = 0;
        mDownY = 0;
        mDownView = null;
        mDownPosition = ListView.INVALID_POSITION;
        mSwiping = false;
        break;
    }

    case MotionEvent.ACTION_UP: {
        if (mVelocityTracker == null) {
            break;
        }

        mFinalDelta = motionEvent.getRawX() - mDownX;
        mVelocityTracker.addMovement(motionEvent);
        mVelocityTracker.computeCurrentVelocity(1000);
        float velocityX = mVelocityTracker.getXVelocity();
        float absVelocityX = Math.abs(velocityX);
        float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
        boolean dismiss = false;
        boolean dismissRight = false;
        if (Math.abs(mFinalDelta) > mViewWidth / 2 && mSwiping) {
            dismiss = true;
            dismissRight = mFinalDelta > 0;
        } else if (mMinFlingVelocity <= absVelocityX && absVelocityX <= mMaxFlingVelocity
                && absVelocityY < absVelocityX && mSwiping) {
            // dismiss only if flinging in the same direction as dragging
            dismiss = (velocityX < 0) == (mFinalDelta < 0);
            dismissRight = mVelocityTracker.getXVelocity() > 0;
        }
        if (dismiss && mDownPosition != mAnimatingPosition && mDownPosition != ListView.INVALID_POSITION) {
            // dismiss
            final View downView = mDownView; // mDownView gets null'd before animation ends
            final int downPosition = mDownPosition;
            ++mDismissAnimationRefCount;
            mAnimatingPosition = mDownPosition;
            ViewCompat.animate(mDownView).translationX(dismissRight ? mViewWidth : -mViewWidth).alpha(0)
                    .setDuration(mAnimationTime).setListener(new ViewPropertyAnimatorListener() {
                        @Override
                        public void onAnimationStart(View view) {
                            // Do nothing.
                        }

                        @Override
                        public void onAnimationEnd(View view) {
                            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                                performDismiss(downView, downPosition);
                            }
                        }

                        @Override
                        public void onAnimationCancel(View view) {
                            // Do nothing.
                        }
                    });
        } else {
            // cancel
            ViewCompat.animate(mDownView).translationX(0).alpha(mAlpha).setDuration(mAnimationTime)
                    .setListener(null);
        }
        mVelocityTracker.recycle();
        mVelocityTracker = null;
        mDownX = 0;
        mDownY = 0;
        mDownView = null;
        mDownPosition = ListView.INVALID_POSITION;
        mSwiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (mVelocityTracker == null || mPaused) {
            break;
        }

        mVelocityTracker.addMovement(motionEvent);
        float deltaX = motionEvent.getRawX() - mDownX;
        float deltaY = motionEvent.getRawY() - mDownY;
        if (!mSwiping && Math.abs(deltaX) > mSlop && Math.abs(deltaY) < Math.abs(deltaX) / 2) {
            mSwiping = true;
            mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
        }

        if (deltaX < 0 && !mSwipingLeft)
            mSwiping = false;
        if (deltaX > 0 && !mSwipingRight)
            mSwiping = false;

        if (mSwiping) {
            ViewCompat.setTranslationX(mDownView, deltaX - mSwipingSlop);
            ViewCompat.setAlpha(mDownView,
                    Math.max(0f, Math.min(mAlpha, mAlpha * (1f - Math.abs(deltaX) / mViewWidth))));
            return true;
        }
        break;
    }
    }

    return false;
}

From source file:android.support.v7ox.view.menu.ActionMenuItemView.java

@Override
public boolean onLongClick(View v) {
    if (hasText()) {
        // Don't show the cheat sheet for items that already show text.
        return false;
    }// w  w w  . j  ava2s. co m

    final int[] screenPos = new int[2];
    final Rect displayFrame = new Rect();
    getLocationOnScreen(screenPos);
    getWindowVisibleDisplayFrame(displayFrame);

    final Context context = getContext();
    final int width = getWidth();
    final int height = getHeight();
    final int midy = screenPos[1] + height / 2;
    int referenceX = screenPos[0] + width / 2;
    if (ViewCompat.getLayoutDirection(v) == ViewCompat.LAYOUT_DIRECTION_LTR) {
        final int screenWidth = context.getResources().getDisplayMetrics().widthPixels;
        referenceX = screenWidth - referenceX; // mirror
    }
    Toast cheatSheet = Toast.makeText(context, mItemData.getTitle(), Toast.LENGTH_SHORT);
    if (midy < displayFrame.height()) {
        // Show along the top; follow action buttons
        cheatSheet.setGravity(Gravity.TOP | GravityCompat.END, referenceX,
                screenPos[1] + height - displayFrame.top);
    } else {
        // Show along the bottom center
        cheatSheet.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);
    }
    cheatSheet.show();
    return true;
}