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

Example 36 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project Reader by TheKeeperOfPie.

the class ImageViewZoom method initialize.

private void initialize() {
    setClickable(true);
    scroller = new Scroller(getContext());
    scaleGestureDetector = new ScaleGestureDetector(getContext(), new ScaleGestureDetector.SimpleOnScaleGestureListener() {

        @Override
        public boolean onScale(ScaleGestureDetector detector) {
            //                Log.d(TAG, "onScale() called with: " + "detector = [" + detector + "]");
            //
            //                Log.d(TAG, "onScale() called with: " + "focusX = [" + detector.getFocusX() + "], focusY = [" + detector.getFocusY() + "], width = [" + getWidth() + "], height = [" + getHeight() + "]");
            //                float translationX = detector.getFocusX() * (translationMaxX - translationMinX) / getWidth() + translationMinX;
            //                float translationY = detector.getFocusY() * (translationMaxY - translationMinY) / getHeight() + translationMinY;
            //                setTranslation(translationX, translationY);
            applyScaleFactor(detector.getFocusX(), detector.getFocusY(), detector.getScaleFactor());
            return true;
        }
    });
    gestureDetector = new GestureDetectorCompat(getContext(), new GestureDetector.SimpleOnGestureListener() {

        private int pointerCount;

        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            //                Log.d(TAG, "onScroll() called with: " + "translationX = [" + translationX + "], translationMinX = [" + translationMinX + "], translationMaxX = [" + translationMaxX + "], scaleStart = [" + scaleStart + "], scaleCurrent = [" + scaleCurrent + "], contentWidth = [" + contentWidth + "]");
            //                Log.d(TAG, "onScroll() called with relative: " + "x = [" + getRelativeX() + "], y = [" + getRelativeY() + "]");
            scroller.forceFinished(true);
            if (pointerCount == 1) {
                applyTranslation(-distanceX, -distanceY);
            }
            return super.onScroll(e1, e2, distanceX, distanceY);
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            scroller.forceFinished(true);
            if (pointerCount == 1) {
                Log.d(TAG, "onFling() called with: " + "e1 = [" + e1 + "], e2 = [" + e2 + "], velocityX = [" + velocityX + "], velocityY = [" + velocityY + "]");
                scroller.fling((int) translationX, (int) translationY, (int) velocityX, (int) velocityY, (int) translationMinX, (int) translationMaxX, (int) translationMinY, (int) translationMaxY);
                post(runnableScroll);
            }
            return super.onFling(e1, e2, velocityX, velocityY);
        }

        @Override
        public boolean onDown(MotionEvent e) {
            pointerCount = e.getPointerCount();
            return super.onDown(e);
        }
    });
}

Example 37 with ScaleGestureDetector

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

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 38 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project ImageViewZoom by sephiroth74.

the class ImageViewTouch method init.

@Override
protected void init(Context context, AttributeSet attrs, int defStyle) {
    super.init(context, attrs, defStyle);
    mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
    mGestureListener = getGestureListener();
    mScaleListener = getScaleListener();
    mScaleDetector = new ScaleGestureDetector(getContext(), mScaleListener);
    mGestureDetector = new GestureDetector(getContext(), mGestureListener, null, true);
    mDoubleTapDirection = 1;
    setQuickScaleEnabled(false);
}

Example 39 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project XobotOS by xamarin.

the class ZoomManager method updateMultiTouchSupport.

public void updateMultiTouchSupport(Context context) {
    // check the preconditions
    assert mWebView.getSettings() != null;
    final WebSettings settings = mWebView.getSettings();
    final PackageManager pm = context.getPackageManager();
    mSupportMultiTouch = (pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) || pm.hasSystemFeature(PackageManager.FEATURE_FAKETOUCH_MULTITOUCH_DISTINCT)) && settings.supportZoom() && settings.getBuiltInZoomControls();
    mAllowPanAndScale = pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT) || pm.hasSystemFeature(PackageManager.FEATURE_FAKETOUCH_MULTITOUCH_DISTINCT);
    if (mSupportMultiTouch && (mScaleDetector == null)) {
        mScaleDetector = new ScaleGestureDetector(context, new ScaleDetectorListener());
    } else if (!mSupportMultiTouch && (mScaleDetector != null)) {
        mScaleDetector = null;
    }
}

Example 40 with ScaleGestureDetector

use of android.view.ScaleGestureDetector in project UltimateAndroid by cymcsg.

the class GestureTouchActivity method onCreate.

@SuppressWarnings("deprecation")
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.gesture_activity);
    // Determine the center of the screen to center 'gesture_earth'
    Display display = getWindowManager().getDefaultDisplay();
    mFocusX = display.getWidth() / 2f;
    mFocusY = display.getHeight() / 2f;
    // Set this class as touchListener to the ImageView
    ImageView view = (ImageView) findViewById(R.id.imageView);
    view.setOnTouchListener(this);
    // Determine dimensions of 'gesture_earth' image
    Drawable d = this.getResources().getDrawable(R.drawable.gesture_earth);
    mImageHeight = d.getIntrinsicHeight();
    mImageWidth = d.getIntrinsicWidth();
    // View is scaled and translated by matrix, so scale and translate initially
    float scaledImageCenterX = (mImageWidth * mScaleFactor) / 2;
    float scaledImageCenterY = (mImageHeight * mScaleFactor) / 2;
    mMatrix.postScale(mScaleFactor, mScaleFactor);
    mMatrix.postTranslate(mFocusX - scaledImageCenterX, mFocusY - scaledImageCenterY);
    view.setImageMatrix(mMatrix);
    // Setup Gesture Detectors
    mScaleDetector = new ScaleGestureDetector(getApplicationContext(), new ScaleListener());
    mRotateDetector = new RotateGestureDetector(getApplicationContext(), new RotateListener());
    mMoveDetector = new MoveGestureDetector(getApplicationContext(), new MoveListener());
    mShoveDetector = new ShoveGestureDetector(getApplicationContext(), new ShoveListener());
}