public WebViewInputDispatcher(UiCallbacks uiCallbacks, WebKitCallbacks webKitCallbacks) {
this.mUiCallbacks = uiCallbacks;
mUiHandler = new UiHandler(uiCallbacks.getUiLooper());
this.mWebKitCallbacks = webKitCallbacks;
mWebKitHandler = new WebKitHandler(webKitCallbacks.getWebKitLooper());
ViewConfiguration config = ViewConfiguration.get(mUiCallbacks.getContext());
mDoubleTapSlopSquared = config.getScaledDoubleTapSlop();
mDoubleTapSlopSquared = (mDoubleTapSlopSquared * mDoubleTapSlopSquared);
mTouchSlopSquared = config.getScaledTouchSlop();
mTouchSlopSquared = (mTouchSlopSquared * mTouchSlopSquared);
}
@Test
public void methodsShouldReturnScaledAndroidConstantsDependingOnPixelDensity() {
Activity context = new Activity();
shadowOf(context.getResources()).setDensity(1.5f);
ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
assertEquals(15, viewConfiguration.getScaledScrollBarSize());
assertEquals(18, viewConfiguration.getScaledFadingEdgeLength());
assertEquals(18, viewConfiguration.getScaledEdgeSlop());
assertEquals(24, viewConfiguration.getScaledTouchSlop());
assertEquals(48, viewConfiguration.getScaledPagingTouchSlop());
assertEquals(150, viewConfiguration.getScaledDoubleTapSlop());
assertEquals(24, viewConfiguration.getScaledWindowTouchSlop());
assertEquals(75, viewConfiguration.getScaledMinimumFlingVelocity());
assertEquals(6000, viewConfiguration.getScaledMaximumFlingVelocity());
}
private void init(Context context) {
if (context == null) {
throw new IllegalArgumentException("Context must not be null");
}
if (mListener == null) {
throw new IllegalArgumentException("OnGestureListener must not be null");
}
mIsLongpressEnabled = true;
final ViewConfiguration configuration = ViewConfiguration.get(context);
final int touchSlop = configuration.getScaledTouchSlop();
final int doubleTapSlop = configuration.getScaledDoubleTapSlop();
mMinimumFlingVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumFlingVelocity = configuration.getScaledMaximumFlingVelocity();
mTouchSlopSquare = touchSlop * touchSlop;
mDoubleTapSlopSquare = doubleTapSlop * doubleTapSlop;
}
public TouchImageView(Context context, AttributeSet attrs) {
super(context, attrs);
if (getDrawable() != null) {
bitmap = ((BitmapDrawable) getDrawable()).getBitmap();
}
setScaleType(ScaleType.MATRIX);
setOnTouchListener(this); // 设置触屏监听
dm = new DisplayMetrics();
((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(dm); // 获取分辨率
if (bitmap != null) {
Log.d("test", "TouchImageView(), call center()");
minZoom();
center();
}
setImageMatrix(matrix);
final ViewConfiguration configuration = ViewConfiguration.get(context);
touchSlop = configuration.getScaledTouchSlop();
doubleTapSlop = configuration.getScaledDoubleTapSlop();
mMinimumFlingVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumFlingVelocity = configuration.getScaledMaximumFlingVelocity();
Log.d(
"test",
"touchSlop: "
+ touchSlop
+ ", doubleTapSlop: "
+ doubleTapSlop
+ ", mMinimumFlingVelocity: "
+ mMinimumFlingVelocity
+ ", mMaximumFlingVelocity: "
+ mMaximumFlingVelocity);
}
@Test
public void methodsShouldReturnAndroidConstants() {
Activity context = new Activity();
ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
assertEquals(10, ViewConfiguration.getScrollBarSize());
assertEquals(250, ViewConfiguration.getScrollBarFadeDuration());
assertEquals(300, ViewConfiguration.getScrollDefaultDelay());
assertEquals(12, ViewConfiguration.getFadingEdgeLength());
assertEquals(125, ViewConfiguration.getPressedStateDuration());
assertEquals(500, ViewConfiguration.getLongPressTimeout());
assertEquals(115, ViewConfiguration.getTapTimeout());
assertEquals(500, ViewConfiguration.getJumpTapTimeout());
assertEquals(300, ViewConfiguration.getDoubleTapTimeout());
assertEquals(12, ViewConfiguration.getEdgeSlop());
assertEquals(16, ViewConfiguration.getTouchSlop());
assertEquals(16, ViewConfiguration.getWindowTouchSlop());
assertEquals(50, ViewConfiguration.getMinimumFlingVelocity());
assertEquals(4000, ViewConfiguration.getMaximumFlingVelocity());
assertEquals(320 * 480 * 4, ViewConfiguration.getMaximumDrawingCacheSize());
assertEquals(3000, ViewConfiguration.getZoomControlsTimeout());
assertEquals(500, ViewConfiguration.getGlobalActionKeyTimeout());
assertEquals(0.015f, ViewConfiguration.getScrollFriction());
assertEquals(1f, context.getResources().getDisplayMetrics().density);
assertEquals(10, viewConfiguration.getScaledScrollBarSize());
assertEquals(12, viewConfiguration.getScaledFadingEdgeLength());
assertEquals(12, viewConfiguration.getScaledEdgeSlop());
assertEquals(16, viewConfiguration.getScaledTouchSlop());
assertEquals(32, viewConfiguration.getScaledPagingTouchSlop());
assertEquals(100, viewConfiguration.getScaledDoubleTapSlop());
assertEquals(16, viewConfiguration.getScaledWindowTouchSlop());
assertEquals(50, viewConfiguration.getScaledMinimumFlingVelocity());
assertEquals(4000, viewConfiguration.getScaledMaximumFlingVelocity());
}