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Adding RTL paging.

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Change-Id: Ic27d499cb76c7c30da37ed93f5372dd8441118b7
This commit is contained in:
Winson Chung
2013-01-30 12:01:02 -08:00
parent 05713af127
commit 52aee60edc
3 changed files with 127 additions and 57 deletions
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src/com/android/launcher2/Workspace.java
+19 -16
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@@ -1182,18 +1182,6 @@ public class Workspace extends SmoothPagedView
}
}
float overScrollBackgroundAlphaInterpolator(float r) {
float threshold = 0.08f;
if (r > mOverScrollMaxBackgroundAlpha) {
mOverScrollMaxBackgroundAlpha = r;
} else if (r < mOverScrollMaxBackgroundAlpha) {
r = mOverScrollMaxBackgroundAlpha;
}
return Math.min(r / threshold, 1.0f);
}
private void updatePageAlphaValues(int screenCenter) {
boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX;
if (mWorkspaceFadeInAdjacentScreens &&
@@ -1226,23 +1214,38 @@ public class Workspace extends SmoothPagedView
@Override
protected void screenScrolled(int screenCenter) {
final boolean isRtl = isLayoutRtl();
super.screenScrolled(screenCenter);
updatePageAlphaValues(screenCenter);
enableHwLayersOnVisiblePages();
if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) {
int index = mOverScrollX < 0 ? 0 : getChildCount() - 1;
int index = 0;
float pivotX = 0f;
final float leftBiasedPivot = 0.25f;
final float rightBiasedPivot = 0.75f;
final int lowerIndex = 0;
final int upperIndex = getChildCount() - 1;
if (isRtl) {
index = mOverScrollX < 0 ? upperIndex : lowerIndex;
pivotX = (index == 0 ? leftBiasedPivot : rightBiasedPivot);
} else {
index = mOverScrollX < 0 ? lowerIndex : upperIndex;
pivotX = (index == 0 ? rightBiasedPivot : leftBiasedPivot);
}
CellLayout cl = (CellLayout) getChildAt(index);
float scrollProgress = getScrollProgress(screenCenter, cl, index);
cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0);
float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress;
final boolean isLeftPage = (isRtl ? index > 0 : index == 0);
cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage);
float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress;
cl.setRotationY(rotation);
setFadeForOverScroll(Math.abs(scrollProgress));
if (!mOverscrollTransformsSet) {
mOverscrollTransformsSet = true;
cl.setCameraDistance(mDensity * mCameraDistance);
cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f));
cl.setPivotX(cl.getMeasuredWidth() * pivotX);
cl.setPivotY(cl.getMeasuredHeight() * 0.5f);
cl.setOverscrollTransformsDirty(true);
}