diff options
Diffstat (limited to 'src/com')
-rw-r--r-- | src/com/android/launcher2/PagedView.java | 41 | ||||
-rw-r--r-- | src/com/android/launcher2/Workspace.java | 22 |
2 files changed, 47 insertions, 16 deletions
diff --git a/src/com/android/launcher2/PagedView.java b/src/com/android/launcher2/PagedView.java index 482d3d1f0..ad88a89d7 100644 --- a/src/com/android/launcher2/PagedView.java +++ b/src/com/android/launcher2/PagedView.java @@ -127,6 +127,7 @@ public abstract class PagedView extends ViewGroup { protected boolean mCenterPagesVertically; protected boolean mAllowOverScroll = true; protected int mUnboundedScrollX; + protected int[] mTempVisiblePagesRange = new int[2]; // parameter that adjusts the layout to be optimized for pages with that scale factor protected float mLayoutScale = 1.0f; @@ -701,20 +702,7 @@ public abstract class PagedView extends ViewGroup { return (int) (maxWidth * mLayoutScale + 0.5f); } - @Override - protected void dispatchDraw(Canvas canvas) { - int halfScreenSize = getMeasuredWidth() / 2; - int screenCenter = mScrollX + halfScreenSize; - - if (screenCenter != mLastScreenCenter || mForceScreenScrolled) { - screenScrolled(screenCenter); - mLastScreenCenter = screenCenter; - mForceScreenScrolled = false; - } - - // Find out which screens are visible; as an optimization we only call draw on them - // As an optimization, this code assumes that all pages have the same width as the 0th - // page. + protected void getVisiblePages(int[] range) { final int pageCount = getChildCount(); if (pageCount > 0) { final int pageWidth = getScaledMeasuredWidth(getPageAt(0)); @@ -731,6 +719,31 @@ public abstract class PagedView extends ViewGroup { rightScreen++; x += getScaledMeasuredWidth(getPageAt(rightScreen)) + mPageSpacing; } + range[0] = leftScreen; + range[1] = rightScreen; + } else { + range[0] = -1; + range[1] = -1; + } + } + + @Override + protected void dispatchDraw(Canvas canvas) { + int halfScreenSize = getMeasuredWidth() / 2; + int screenCenter = mScrollX + halfScreenSize; + + if (screenCenter != mLastScreenCenter || mForceScreenScrolled) { + screenScrolled(screenCenter); + mLastScreenCenter = screenCenter; + mForceScreenScrolled = false; + } + + // Find out which screens are visible; as an optimization we only call draw on them + final int pageCount = getChildCount(); + if (pageCount > 0) { + getVisiblePages(mTempVisiblePagesRange); + final int leftScreen = mTempVisiblePagesRange[0]; + final int rightScreen = mTempVisiblePagesRange[1]; final long drawingTime = getDrawingTime(); // Clip to the bounds diff --git a/src/com/android/launcher2/Workspace.java b/src/com/android/launcher2/Workspace.java index a6d5cb395..b6b90f472 100644 --- a/src/com/android/launcher2/Workspace.java +++ b/src/com/android/launcher2/Workspace.java @@ -1241,6 +1241,19 @@ public class Workspace extends SmoothPagedView @Override protected void dispatchDraw(Canvas canvas) { + if (mChildrenLayersEnabled) { + getVisiblePages(mTempVisiblePagesRange); + final int leftScreen = mTempVisiblePagesRange[0]; + final int rightScreen = mTempVisiblePagesRange[1]; + if (leftScreen != -1 && rightScreen != -1) { + // calling setChildrenLayersEnabled on a view that's not visible/rendered + // causes slowdowns on some graphics cards, so we set it here to be sure + // it's only called when it's safe (ie when the view will be rendered) + for (int i = leftScreen; i <= rightScreen; i++) { + ((ViewGroup)getPageAt(i)).setChildrenLayersEnabled(true); + } + } + } super.dispatchDraw(canvas); if (mInScrollArea && !LauncherApplication.isScreenLarge()) { @@ -1345,8 +1358,13 @@ public class Workspace extends SmoothPagedView if (enableChildrenLayers != mChildrenLayersEnabled) { mChildrenLayersEnabled = enableChildrenLayers; - for (int i = 0; i < getPageCount(); i++) { - ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); + // calling setChildrenLayersEnabled on a view that's not visible/rendered + // causes slowdowns on some graphics cards, so we only disable it here and leave + // the enabling to dispatchDraw + if (!enableChildrenLayers) { + for (int i = 0; i < getPageCount(); i++) { + ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(false); + } } } } |