android.view.View#setScaleY ( )源码实例Demo

@Override
public void transformItem(GalleryLayoutManager layoutManager, View item, float fraction) {
    if (layoutManager.getOrientation() == GalleryLayoutManager.VERTICAL) {
        return;
    }
    int width = item.getWidth();
    int height = item.getHeight();
    item.setPivotX(width / 2.f);
    item.setPivotY(height);
    float scale = 1 - 0.1f * Math.abs(fraction);
    item.setScaleX(scale);
    item.setScaleY(scale);
    item.setRotation(ROTATE_ANGEL * fraction);
    item.setTranslationY((float) (Math.sin(2 * Math.PI * ROTATE_ANGEL * Math.abs(fraction) / 360.f) * width / 2.0f));
    item.setTranslationX((float) ((1 - scale) * width / 2.0f / Math.cos(2 * Math.PI * ROTATE_ANGEL * fraction / 360.f)));
    if (fraction > 0) {
        item.setTranslationX(-item.getTranslationX());
    }
    item.setAlpha(1 - 0.2f * Math.abs(fraction));
}
 

/**
 * Show the the touch interceptor.
 */
private void showTouchInterceptor() {
    if (findViewWithTag(TAG_OVERLAY) == null) {
        addTouchInterceptor();
    }

    if (mContentView == null) {
        mContentView = findViewWithTag(TAG_CONTENT);
    }

    float offset = map(mContentView.getLeft(), 0, DuoDrawerLayout.this.getWidth() * mMarginFactor, 0, 1);
    float scaleFactorContent = map(offset, 0, 1, mContentScaleClosed, mClickToCloseScale);

    View interceptor = findViewWithTag(TAG_OVERLAY);

    if (interceptor != null) {
        interceptor.setTranslationX(mContentView.getLeft());
        interceptor.setTranslationY(mContentView.getTop());
        interceptor.setScaleX(scaleFactorContent);
        interceptor.setScaleY(scaleFactorContent);
        interceptor.setVisibility(VISIBLE);
    }
}
 

/**
	 * Called each {@link #transformPage(View, float)} before {{@link #onTransform(View, float)}.
	 * <p>
	 * The default implementation attempts to reset all view properties. This is useful when toggling transforms that do
	 * not modify the same page properties. For instance changing from a transformation that applies rotation to a
	 * transformation that fades can inadvertently leave a fragment stuck with a rotation or with some degree of applied
	 * alpha.
	 *
	 * @param page
	 *            Apply the transformation to this page
	 * @param position
	 *            Position of page relative to the current front-and-center position of the pager. 0 is front and
	 *            center. 1 is one full page position to the right, and -1 is one page position to the left.
	 */
	protected void onPreTransform(View page, float position) {
		final float width = page.getWidth();

		page.setRotationX(0);
		page.setRotationY(0);
		page.setRotation(0);
		page.setScaleX(1);
		page.setScaleY(1);
		page.setPivotX(0);
		page.setPivotY(0);
		page.setTranslationY(0);
		page.setTranslationX(isPagingEnabled() ? 0f : -width * position);

		if (hideOffscreenPages()) {
			page.setAlpha(position <= -1f || position >= 1f ? 0f : 1f);
//			page.setEnabled(false);
		} else {
//			page.setEnabled(true);
			page.setAlpha(1f);
		}
	}
 

/**
 * 竖向方向上的缩放
 */
private void scaleVerticalChildView(){
    float mid = getHeight() / 2.0f;
    for (int i = 0; i < getChildCount(); i++) {
        View childView =  getChildAt(i);
        if (childView != null) {
            float childMid = (getDecoratedTop(childView) + getDecoratedBottom(childView)) / 2.0f;
            float scale = 1.0f + (-1 *  (1 - mScale)) * (Math.min(mid, Math.abs(mid - childMid))) / mid;
            childView.setScaleX(scale);
            childView.setScaleY(scale);
            if (mAlpha) {
                childView.setAlpha(scale);
            }
        }
    }
}
 

public void transformPage(View view, float position) {
    int pageWidth = view.getWidth();

    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0);

    } else if (position <= 0) { // [-1,0]
        // Use the default slide transition when moving to the left page
        view.setAlpha(1);
        view.setTranslationX(0);
        view.setScaleX(1);
        view.setScaleY(1);

    } else if (position <= 1) { // (0,1]
        // Fade the page out.
        view.setAlpha(1 - position);

        // Counteract the default slide transition
        view.setTranslationX(pageWidth * -position);

        // Scale the page down (between MIN_SCALE and 1)
        float scaleFactor = MIN_SCALE + (1 - MIN_SCALE) * (1 - Math.abs(position));
        view.setScaleX(scaleFactor);
        view.setScaleY(scaleFactor);

    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0);
    }
}
 

private static void clear(View v) {
    v.setAlpha(1);
    v.setScaleY(1);
    v.setScaleX(1);
    v.setTranslationY(0);
    v.setTranslationX(0);
    v.setRotation(0);
    v.setRotationY(0);
    v.setRotationX(0);
    v.setPivotY(v.getMeasuredHeight() / 2);
    v.setPivotX(v.getMeasuredWidth() / 2);
    v.animate().setInterpolator(null).setStartDelay(0);
}
 

private void transformPageDepth(View view, float position) {
    final float MIN_SCALE = 0.75f;

    int pageWidth = view.getWidth();

    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0);
    } else if (position <= 0) { // [-1,0]
        // Use the default slide transition when moving to the left page
        view.setAlpha(1);
        view.setTranslationX(0);
        view.setScaleX(1);
        view.setScaleY(1);
    } else if (position <= 1) { // (0,1]
        // Fade the page out.
        view.setAlpha(1 - position);

        // Counteract the default slide transition
        view.setTranslationX(pageWidth * -position);

        // Scale the page down (between MIN_SCALE and 1)
        float scaleFactor = MIN_SCALE + (1 - MIN_SCALE) * (1 - Math.abs(position));
        view.setScaleX(scaleFactor);
        view.setScaleY(scaleFactor);
    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0);
    }
}
 

@Override
protected void onTransform(View view, float position) {
	if (position >= -1 || position <= 1) {
		// Modify the default slide transition to shrink the page as well
		final float height = view.getHeight();
		final float width = view.getWidth();
		final float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
		final float vertMargin = height * (1 - scaleFactor) / 2;
		final float horzMargin = width * (1 - scaleFactor) / 2;

		// Center vertically
		view.setPivotY(0.5f * height);
		view.setPivotX(0.5f * width);

		if (position < 0) {
			view.setTranslationX(horzMargin - vertMargin / 2);
		} else {
			view.setTranslationX(-horzMargin + vertMargin / 2);
		}

		// Scale the page down (between MIN_SCALE and 1)
		view.setScaleX(scaleFactor);
		view.setScaleY(scaleFactor);

		// Fade the page relative to its size.
		view.setAlpha(MIN_ALPHA + (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA));
	}
}
 

/** Reset the transform on a view. */
public static void reset(View v) {
    v.setTranslationX(0f);
    v.setTranslationY(0f);
    v.setScaleX(1f);
    v.setScaleY(1f);
    v.setAlpha(1f);
}
 

private void resetSubButton(Point center, SubButton subButton, View subButtonView) {
    if (subButton != null) {
        int floatingMenuButtonWidth = floatingMenuButton.getWidth();
        int floatingMenuButtonHeight = floatingMenuButton.getHeight();
        int xResetPos = center.x + floatingMenuButtonWidth / 2;
        int yResetPos = center.y - floatingMenuButtonHeight / 2;
        subButtonView.setX(xResetPos);
        subButtonView.setY(yResetPos);
        subButtonView.setScaleX(0);
        subButtonView.setScaleY(0);
        subButton.setX(xResetPos);
        subButton.setY(yResetPos);
        subButton.setAlpha(0);
    }
}
 

@Test
public void testCaptureViewStatus() {
    ActivityController<NavigationSourceUtility.TestActivity> controller = Robolectric.buildActivity(NavigationSourceUtility.TestActivity.class).create().start().resume();
    NavigationSourceUtility.TestActivity testActivity = controller.get();
    View view = new View(testActivity);
    view.setTranslationX(1);
    view.setTranslationY(1);
    view.setScaleX(2.0f);
    view.setScaleY(2.0f);
    view.setRotation(1.0f);
    view.setRotationX(1.0f);
    view.setRotationY(1.0f);
    view.setAlpha(0.5f);

    AnimatorUtility.AnimatorInfo animatorInfo = AnimatorUtility.captureViewStatus(view);
    assertEquals(1.0f, animatorInfo.translationX, 0.0f);
    assertEquals(1.0f, animatorInfo.translationY, 0.0f);
    assertEquals(2.0f, animatorInfo.scaleX, 0.0f);
    assertEquals(2.0f, animatorInfo.scaleY, 0.0f);
    assertEquals(1.0f, animatorInfo.rotation, 0.0f);
    assertEquals(1.0f, animatorInfo.rotationX, 0.0f);
    assertEquals(1.0f, animatorInfo.rotationY, 0.0f);
    assertEquals(0.5f, animatorInfo.alpha, 0.0f);

    View view2 = new View(testActivity);
    AnimatorUtility.resetViewStatus(view2, animatorInfo);

    assertEquals(1.0f, view2.getTranslationX(), 0.0f);
    assertEquals(1.0f, view2.getTranslationY(), 0.0f);
    assertEquals(2.0f, view2.getScaleX(), 0.0f);
    assertEquals(2.0f, view2.getScaleY(), 0.0f);
    assertEquals(1.0f, view2.getRotation(), 0.0f);
    assertEquals(1.0f, view2.getRotationX(), 0.0f);
    assertEquals(1.0f, view2.getRotationY(), 0.0f);
    assertEquals(0.5f, view2.getAlpha(), 0.0f);
}
 

@Override
public void onHideLabel(View label) {
    final float shift = label.getWidth() / 2;
    label.setScaleX(SCALE_X_SHOWN);
    label.setScaleY(SCALE_Y_SHOWN);
    label.setX(0f);
    label.animate().alpha(0).scaleX(SCALE_X_HIDDEN).scaleY(SCALE_Y_HIDDEN).x(shift);
}
 

@Override
public void onHideLabel(View label) {
    final float shift = label.getWidth() / 2;
    label.setScaleX(SCALE_X_SHOWN);
    label.setScaleY(SCALE_Y_SHOWN);
    label.setX(0f);
    label.animate().alpha(0).scaleX(SCALE_X_HIDDEN).scaleY(SCALE_Y_HIDDEN).x(shift);
}
 

@Override
public void transformPage(View view, float position) {
	int pageWidth = view.getWidth();

	if (position < -1) { // [-Infinity,-1)
		// This page is way off-screen to the left.
		view.setAlpha(0);

	} else if (position <= 0) { // [-1,0]
		// Use the default slide transition when moving to the left page
		view.setAlpha(1);
		view.setTranslationX(0);
		view.setScaleX(1);
		view.setScaleY(1);

	} else if (position <= 1) { // (0,1]
		// Fade the page out.
		view.setAlpha(1 - position);

		// Counteract the default slide transition
		view.setTranslationX(pageWidth * -position);

		// Scale the page down (between MIN_SCALE and 1)
		float scaleFactor = MIN_SCALE
				+ (1 - MIN_SCALE) * (1 - Math.abs(position));
		view.setScaleX(scaleFactor);
		view.setScaleY(scaleFactor);

	} else { // (1,+Infinity]
		// This page is way off-screen to the right.
		view.setAlpha(0);
	}
}
 

@Override
protected void resetLogoViewSize(int hintLocation, View logoView) {
    logoView.clearAnimation();
    logoView.setTranslationX(0);
    logoView.setScaleX(1);
    logoView.setScaleY(1);
}
 

@Override
public void transformPage(View view, float arg1) {
	view.setAlpha(1);
	view.setTranslationX(0);
	view.setTranslationY(0);
	view.setPivotX(view.getWidth() / 2);
	view.setPivotY(view.getHeight() / 2);
	view.setScaleX(1);
	view.setScaleY(1);
	view.setRotation(0);
}
 

@Override
public void transformPage(View page, float position) {
    final float normalizedposition = Math.abs(Math.abs(position) - 1);
    page.setScaleX(normalizedposition / 2 + 0.5f);
    page.setScaleY(normalizedposition / 2 + 0.5f);
}
 

@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
protected void expandToFitScreenWidth(int adWidth, int adHeight,  View view) {
    //Determine the width of the screen
    WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();

    @SuppressWarnings("UnusedAssignment") int width = -1;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
        Point p = new Point();
        display.getSize(p);
        width = p.x;
    } else {
        width = display.getWidth();
    }

    float ratio_delta = ((float) width) / ((float) adWidth);
    int new_height = (int) Math.floor(adHeight * ratio_delta);
    if(getLayoutParams() != null) {
        oldH = getLayoutParams().height;
        oldW = getLayoutParams().width;

        //Adjust width of container
        if (getLayoutParams().width > 0 || getLayoutParams().width == ViewGroup.LayoutParams.WRAP_CONTENT) {
            getLayoutParams().width = width;
        }

        //Adjust height of container
        getLayoutParams().height = new_height;
    }

    if(view instanceof WebView) {

        //Adjust height of webview
        if (view.getLayoutParams() == null) {
            view.setLayoutParams(new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT));
        } else {
            view.getLayoutParams().width = FrameLayout.LayoutParams.MATCH_PARENT;
            view.getLayoutParams().height = FrameLayout.LayoutParams.MATCH_PARENT;
        }
        ((WebView)view).setInitialScale((int) Math.ceil(ratio_delta * 100));
    }else{
        int adWidthInPixel = ViewUtil.getValueInPixel(getContext(), adWidth);
        float widthRatio = (float) width / (float) adWidthInPixel;
        view.setScaleX(widthRatio);
        view.setScaleY(widthRatio);
    }
    view.invalidate();
    shouldResetContainer = true;

}
 

@Override
public void setValue(View view, float value) {
  view.setScaleY(value);
}
 

/**
 * This method handles setting the property values directly in the View object's fields.
 * propertyConstant tells it which property should be set, value is the value to set
 * the property to.
 *
 * @param propertyConstant The property to be set
 * @param value The value to set the property to
 */
private void setValue(int propertyConstant, float value) {
    //final View.TransformationInfo info = mView.mTransformationInfo;
    View v = mView.get();
    if (v != null) {
        switch (propertyConstant) {
            case TRANSLATION_X:
                //info.mTranslationX = value;
                v.setTranslationX(value);
                break;
            case TRANSLATION_Y:
                //info.mTranslationY = value;
                v.setTranslationY(value);
                break;
            case ROTATION:
                //info.mRotation = value;
                v.setRotation(value);
                break;
            case ROTATION_X:
                //info.mRotationX = value;
                v.setRotationX(value);
                break;
            case ROTATION_Y:
                //info.mRotationY = value;
                v.setRotationY(value);
                break;
            case SCALE_X:
                //info.mScaleX = value;
                v.setScaleX(value);
                break;
            case SCALE_Y:
                //info.mScaleY = value;
                v.setScaleY(value);
                break;
            case X:
                //info.mTranslationX = value - v.mLeft;
                v.setX(value);
                break;
            case Y:
                //info.mTranslationY = value - v.mTop;
                v.setY(value);
                break;
            case ALPHA:
                //info.mAlpha = value;
                v.setAlpha(value);
                break;
        }
    }
}