Examples with ScaleGestureDetector android.view.ScaleGestureDetector used on opensource projects

Example 41 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project wechat by motianhuo.

the class TouchImageView method init.

protected void init() {
    mTimerHandler = new TimeHandler(this);
    matrix.setTranslate(1f, 1f);
    m = new float[9];
    setImageMatrix(matrix);
    setScaleType(ScaleType.MATRIX);
    if (Build.VERSION.SDK_INT >= 8) {
        mScaleDetector = new ScaleGestureDetector(mContext, new ScaleListener());
    }
    setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent rawEvent) {
            WrapMotionEvent event = WrapMotionEvent.wrap(rawEvent);
            if (mScaleDetector != null) {
                ((ScaleGestureDetector) mScaleDetector).onTouchEvent(rawEvent);
            }
            fillMatrixXY();
            PointF curr = new PointF(event.getX(), event.getY());
            switch(event.getAction() & MotionEvent.ACTION_MASK) {
                case MotionEvent.ACTION_DOWN:
                    allowInert = false;
                    savedMatrix.set(matrix);
                    last.set(event.getX(), event.getY());
                    start.set(last);
                    mode = DRAG;
                    break;
                case MotionEvent.ACTION_POINTER_DOWN:
                    oldDist = spacing(event);
                    // Log.d(TAG, "oldDist=" + oldDist);
                    if (oldDist > 10f) {
                        savedMatrix.set(matrix);
                        midPoint(mid, event);
                        mode = ZOOM;
                    // Log.d(TAG, "mode=ZOOM");
                    }
                    break;
                case MotionEvent.ACTION_UP:
                    allowInert = true;
                    mode = NONE;
                    int xDiff = (int) Math.abs(event.getX() - start.x);
                    int yDiff = (int) Math.abs(event.getY() - start.y);
                    if (xDiff < CLICK && yDiff < CLICK) {
                        // Perform scale on double click
                        long pressTime = System.currentTimeMillis();
                        if (pressTime - lastPressTime <= DOUBLE_PRESS_INTERVAL) {
                            if (mClickTimer != null)
                                mClickTimer.cancel();
                            if (saveScale == 1) {
                                final float targetScale = maxScale / saveScale;
                                matrix.postScale(targetScale, targetScale, start.x, start.y);
                                saveScale = maxScale;
                            } else {
                                matrix.postScale(minScale / saveScale, minScale / saveScale, width / 2, height / 2);
                                saveScale = minScale;
                            }
                            calcPadding();
                            checkAndSetTranslate(0, 0);
                            lastPressTime = 0;
                        } else {
                            lastPressTime = pressTime;
                            mClickTimer = new Timer();
                            mClickTimer.schedule(new Task(), 300);
                        }
                        if (saveScale == minScale) {
                            scaleMatrixToBounds();
                        }
                    }
                    break;
                case MotionEvent.ACTION_POINTER_UP:
                    mode = NONE;
                    velocity = 0;
                    savedMatrix.set(matrix);
                    oldDist = spacing(event);
                    // Log.d(TAG, "mode=NONE");
                    break;
                case MotionEvent.ACTION_MOVE:
                    allowInert = false;
                    if (mode == DRAG) {
                        float deltaX = curr.x - last.x;
                        float deltaY = curr.y - last.y;
                        long dragTime = System.currentTimeMillis();
                        velocity = (float) distanceBetween(curr, last) / (dragTime - lastDragTime) * FRICTION;
                        lastDragTime = dragTime;
                        checkAndSetTranslate(deltaX, deltaY);
                        lastDelta.set(deltaX, deltaY);
                        last.set(curr.x, curr.y);
                    } else if (mScaleDetector == null && mode == ZOOM) {
                        float newDist = spacing(event);
                        if (rawEvent.getPointerCount() < 2)
                            break;
                        // Magic number 50 for this case
                        if (10 > Math.abs(oldDist - newDist) || Math.abs(oldDist - newDist) > 50)
                            break;
                        float mScaleFactor = newDist / oldDist;
                        oldDist = newDist;
                        float origScale = saveScale;
                        saveScale *= mScaleFactor;
                        if (saveScale > maxScale) {
                            saveScale = maxScale;
                            mScaleFactor = maxScale / origScale;
                        } else if (saveScale < minScale) {
                            saveScale = minScale;
                            mScaleFactor = minScale / origScale;
                        }
                        calcPadding();
                        if (origWidth * saveScale <= width || origHeight * saveScale <= height) {
                            matrix.postScale(mScaleFactor, mScaleFactor, width / 2, height / 2);
                            if (mScaleFactor < 1) {
                                fillMatrixXY();
                                if (mScaleFactor < 1) {
                                    scaleMatrixToBounds();
                                }
                            }
                        } else {
                            PointF mid = midPointF(event);
                            matrix.postScale(mScaleFactor, mScaleFactor, mid.x, mid.y);
                            fillMatrixXY();
                            if (mScaleFactor < 1) {
                                if (matrixX < -right)
                                    matrix.postTranslate(-(matrixX + right), 0);
                                else if (matrixX > 0)
                                    matrix.postTranslate(-matrixX, 0);
                                if (matrixY < -bottom)
                                    matrix.postTranslate(0, -(matrixY + bottom));
                                else if (matrixY > 0)
                                    matrix.postTranslate(0, -matrixY);
                            }
                        }
                        checkSiding();
                    }
                    break;
            }
            setImageMatrix(matrix);
            invalidate();
            return false;
        }
    });
}

Example 42 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project android_frameworks_base by AOSPA.

the class OverlayDisplayWindow method createWindow.

private void createWindow() {
    LayoutInflater inflater = LayoutInflater.from(mContext);
    mWindowContent = inflater.inflate(com.android.internal.R.layout.overlay_display_window, null);
    mWindowContent.setOnTouchListener(mOnTouchListener);
    mTextureView = (TextureView) mWindowContent.findViewById(com.android.internal.R.id.overlay_display_window_texture);
    mTextureView.setPivotX(0);
    mTextureView.setPivotY(0);
    mTextureView.getLayoutParams().width = mWidth;
    mTextureView.getLayoutParams().height = mHeight;
    mTextureView.setOpaque(false);
    mTextureView.setSurfaceTextureListener(mSurfaceTextureListener);
    mTitleTextView = (TextView) mWindowContent.findViewById(com.android.internal.R.id.overlay_display_window_title);
    mTitleTextView.setText(mTitle);
    mWindowParams = new WindowManager.LayoutParams(WindowManager.LayoutParams.TYPE_DISPLAY_OVERLAY);
    mWindowParams.flags |= WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
    if (mSecure) {
        mWindowParams.flags |= WindowManager.LayoutParams.FLAG_SECURE;
    }
    if (DISABLE_MOVE_AND_RESIZE) {
        mWindowParams.flags |= WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
    }
    mWindowParams.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED;
    mWindowParams.alpha = WINDOW_ALPHA;
    mWindowParams.gravity = Gravity.TOP | Gravity.LEFT;
    mWindowParams.setTitle(mTitle);
    mGestureDetector = new GestureDetector(mContext, mOnGestureListener);
    mScaleGestureDetector = new ScaleGestureDetector(mContext, mOnScaleGestureListener);
    // Set the initial position and scale.
    // The position and scale will be clamped when the display is first shown.
    mWindowX = (mGravity & Gravity.LEFT) == Gravity.LEFT ? 0 : mDefaultDisplayInfo.logicalWidth;
    mWindowY = (mGravity & Gravity.TOP) == Gravity.TOP ? 0 : mDefaultDisplayInfo.logicalHeight;
    mWindowScale = INITIAL_SCALE;
}

Example 43 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project android_frameworks_base by AOSPA.

the class ExpandHelper method cancel.

/**
     * Use this to abort any pending expansions in progress.
     */
public void cancel() {
    finishExpanding(true, /* forceAbort */
    0f);
    clearView();
    // reset the gesture detector
    mSGD = new ScaleGestureDetector(mContext, mScaleGestureListener);
}

Example 44 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project mobile-android by photo.

the class CropImageView method init.

/*
	 * (non-Javadoc)
	 * 
	 * @see it.sephiroth.android.library.imagezoom.ImageViewTouch#init()
	 */
@Override
protected void init() {
    super.init();
    mGestureDetector = null;
    mScaleDetector = null;
    mGestureListener = null;
    mScaleListener = null;
    mScaleDetector = new ScaleGestureDetector(getContext(), new CropScaleListener());
    mGestureDetector = new GestureDetector(getContext(), new CropGestureListener(), null, true);
    mGestureDetector.setIsLongpressEnabled(false);
// mTouchSlop = 20 * 20;
}

Example 45 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project robolectric by robolectric.

the class ShadowScaleGestureDetectorTest method setUp.

@Before
public void setUp() throws Exception {
    detector = new ScaleGestureDetector(RuntimeEnvironment.application, null);
    motionEvent = MotionEvent.obtain(-1, -1, MotionEvent.ACTION_UP, 100, 30, -1);
}