从RTL到LTR的反向页面卷曲

Question

世界！ 我使用Harism Page Curl在我的项目中实现页面卷曲所有事情都可以，但是卷曲的方向。 我在我的应用程序中使用阿拉伯语，因此卷曲必须是从左到右（阿拉伯语书籍）。

这个图书馆提供的是从右到左卷曲（英文书籍）。

所以我尝试了以下但没有成功：

1. 撤消图像加载。

2. 更改CurlView类中的参数。 如下图所示：

   公共类CurlView扩展GLSurfaceView实现了View.OnTouchListener，                     CurlRenderer.Observer {

       // Shows one page at the center of view.
       public static final int SHOW_ONE_PAGE = 1;
       // Shows two pages side by side.
       public static final int SHOW_TWO_PAGES = 2;
       // Curl state. We are flipping none, left or right page.
       private static final int CURL_LEFT = 1;
       private static final int CURL_NONE = 0;
       private static final int CURL_RIGHT = 2;
       // Constants for mAnimationTargetEvent.
       private static final int SET_CURL_TO_LEFT = 1;
       private static final int SET_CURL_TO_RIGHT = 2;
       private boolean mAllowLastPageCurl = true;
   
       private boolean mAnimate = false;
       private long mAnimationDurationTime = 300;
       private PointF mAnimationSource = new PointF();
       private long mAnimationStartTime;
       private PointF mAnimationTarget = new PointF();
       private int mAnimationTargetEvent;
   
       private PointF mCurlDir = new PointF();
   
       private PointF mCurlPos = new PointF();
       private int mCurlState = CURL_NONE;
       // Current bitmap index. This is always showed as front of right page.
       private int mCurrentIndex = 0;
   
       // Start position for dragging.
       private PointF mDragStartPos = new PointF();
   
       private boolean mEnableTouchPressure = false;
       // Bitmap size. These are updated from renderer once it's initialized.
       private int mPageBitmapHeight = -1;
   
       private int mPageBitmapWidth = -1;
       // Page meshes. Left and right meshes are 'static' while curl is used to
       // show page flipping.
       private CurlMesh mPageCurl;
   
       private CurlMesh mPageLeft;
       private PageProvider mPageProvider;
       private CurlMesh mPageRight;
   
       private PointerPosition mPointerPos = new PointerPosition();
   
       private CurlRenderer mRenderer;
       private boolean mRenderLeftPage = true;
       private SizeChangedObserver mSizeChangedObserver;
   
       // One page is the default.
       private int mViewMode = SHOW_ONE_PAGE;`
   

和

 @Override
        public int getPageCount() {
            return mBitmapIds.length;
        }

        public Bitmap loadBitmap(int width, int height, int index) {
            tracker.send(new HitBuilders.EventBuilder()
                    .setCategory("UX")
                    .setAction("click")
                    .setLabel("submit")
                    .build());

            Bitmap b = Bitmap.createBitmap(width, height,
                    Bitmap.Config.ARGB_8888);
            b.eraseColor(Color.WHITE);
            Canvas c = new Canvas(b);
            Drawable d = getResources().getDrawable(mBitmapIds[index]);
            int margin = 0;
            int border = 0;
            Rect r = new Rect(margin, margin, width, height);

            int imageWidth = r.width() - (border);
            assert d != null;
            int imageHeight = imageWidth * d.getIntrinsicHeight()
                    / d.getIntrinsicWidth();
            if (imageHeight > r.height() - (border)) {
                imageHeight = r.height() - (border);
                imageWidth = imageHeight * d.getIntrinsicWidth()
                        / d.getIntrinsicHeight();
            }

            r.left += ((r.width() - imageWidth));
            r.right = r.left + imageWidth + border;
            r.top += r.top;

            Paint p = new Paint();
            p.setColor(0xFFC0C0C0);
            c.drawRect(r, p);
            r.left += border;
            r.right -= border;
            r.top += border;
            r.bottom -= border;

            d.setBounds(r);
            d.draw(c);

            return b;
        }

        @Override
        public void updatePage(CurlPage page, int width, int height, int index) {

            if (index == i) {
                Bitmap back = loadBitmap(width, height, index);
                page.setTexture(back, CurlPage.SIDE_BOTH);
                index++;
                i++;
            } else {
                Bitmap back = loadBitmap(width, height, index);
                page.setTexture(back, CurlPage.SIDE_BOTH);
            }
        }