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Merge "Adding notion of fullscreen page to PagedView" into jb-ub-gel-agar

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This commit is contained in:
Adam Cohen
2013-07-17 18:24:45 +00:00
committed by Android (Google) Code Review
parent d2be381d36 96d30a1651
commit 02b3a8ca1f
3 changed files with 99 additions and 116 deletions
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148
src/com/android/launcher3/PagedView.java
View File

@@ -44,6 +44,7 @@ import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.view.ViewGroup.LayoutParams;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.AccessibilityNodeInfo;
@@ -51,6 +52,7 @@ import android.view.animation.AnimationUtils;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.widget.FrameLayout;
import android.widget.Scroller;
import java.util.ArrayList;
@@ -121,7 +123,6 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
private int mLastScreenCenter = -1;
private int[] mChildOffsets;
private int[] mChildRelativeOffsets;
private int[] mChildOffsetsWithLayoutScale;
protected final static int TOUCH_STATE_REST = 0;
protected final static int TOUCH_STATE_SCROLLING = 1;
@@ -139,7 +140,6 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
protected int mTouchSlop;
private int mPagingTouchSlop;
private int mMaximumVelocity;
private int mMinimumWidth;
protected int mPageSpacing;
protected int mPageLayoutPaddingTop;
protected int mPageLayoutPaddingBottom;
@@ -160,9 +160,6 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
// the screens from continuing to translate beyond the normal bounds.
protected int mOverScrollX;
// parameter that adjusts the layout to be optimized for pages with that scale factor
protected float mLayoutScale = 1.0f;
protected static final int INVALID_POINTER = -1;
protected int mActivePointerId = INVALID_POINTER;
@@ -646,6 +643,31 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
return mTopAlignPageWhenShrinkingForBouncer;
}
public static class LayoutParams extends ViewGroup.LayoutParams {
public boolean isFullScreenPage = false;
/**
* {@inheritDoc}
*/
public LayoutParams(int width, int height) {
super(width, height);
}
public LayoutParams(ViewGroup.LayoutParams source) {
super(source);
}
}
protected LayoutParams generateDefaultLayoutParams() {
return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
}
public void addFullScreenPage(View page, int width, int height) {
LayoutParams lp = generateDefaultLayoutParams();
lp.isFullScreenPage = true;
super.addView(page, 0, lp);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (!mIsDataReady || getChildCount() == 0) {
@@ -702,24 +724,38 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
int childWidthMode;
if (lp.width == LayoutParams.WRAP_CONTENT) {
childWidthMode = MeasureSpec.AT_MOST;
int childHeightMode;
int childWidth;
int childHeight;
if (!lp.isFullScreenPage) {
if (lp.width == LayoutParams.WRAP_CONTENT) {
childWidthMode = MeasureSpec.AT_MOST;
} else {
childWidthMode = MeasureSpec.EXACTLY;
}
if (lp.height == LayoutParams.WRAP_CONTENT) {
childHeightMode = MeasureSpec.AT_MOST;
} else {
childHeightMode = MeasureSpec.EXACTLY;
}
childWidth = widthSize - horizontalPadding;
childHeight = heightSize - verticalPadding;
} else {
childWidthMode = MeasureSpec.EXACTLY;
}
int childHeightMode;
if (lp.height == LayoutParams.WRAP_CONTENT) {
childHeightMode = MeasureSpec.AT_MOST;
} else {
childHeightMode = MeasureSpec.EXACTLY;
childWidth = getViewportWidth();
childHeight = getViewportHeight();
}
final int childWidthMeasureSpec =
MeasureSpec.makeMeasureSpec(widthSize - horizontalPadding, childWidthMode);
final int childHeightMeasureSpec =
MeasureSpec.makeMeasureSpec(heightSize - verticalPadding, childHeightMode);
MeasureSpec.makeMeasureSpec(childWidth, childWidthMode);
final int childHeightMeasureSpec =
MeasureSpec.makeMeasureSpec(childHeight, childHeightMode);
child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
}
setMeasuredDimension(scaledWidthSize, scaledHeightSize);
@@ -729,12 +765,6 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
// ensure that the cache is filled with good values.
invalidateCachedOffsets();
if (mScroller.isFinished() && mChildCountOnLastMeasure != getChildCount() &&
!mDeferringForDelete) {
setCurrentPage(getNextPage());
}
mChildCountOnLastMeasure = getChildCount();
if (childCount > 0) {
if (DEBUG) Log.d(TAG, "getRelativeChildOffset(): " + getViewportWidth() + ", "
+ getChildWidth(0));
@@ -753,6 +783,12 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
}
}
if (mScroller.isFinished() && mChildCountOnLastMeasure != getChildCount() &&
!mDeferringForDelete) {
setCurrentPage(getNextPage());
}
mChildCountOnLastMeasure = getChildCount();
if (childCount > 0) {
final int index = isLayoutRtl() ? 0 : childCount - 1;
mMaxScrollX = getChildOffset(index) - getRelativeChildOffset(index);
@@ -791,12 +827,20 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
int childLeft = offsetX + getRelativeChildOffset(startIndex);
for (int i = startIndex; i != endIndex; i += delta) {
final View child = getPageAt(i);
int childTop = offsetY + getPaddingTop();
if (mCenterPagesVertically) {
childTop += ((getViewportHeight() - verticalPadding) - child.getMeasuredHeight()) / 2;
LayoutParams lp = (LayoutParams) child.getLayoutParams();
int childTop;
if (lp.isFullScreenPage) {
childTop = offsetY;
} else {
childTop = offsetY + getPaddingTop();
if (mCenterPagesVertically) {
childTop += ((getViewportHeight() - verticalPadding) - child.getMeasuredHeight()) / 2;
}
}
if (child.getVisibility() != View.GONE) {
final int childWidth = getScaledMeasuredWidth(child);
final int childWidth = child.getMeasuredWidth();
final int childHeight = child.getMeasuredHeight();
if (DEBUG) Log.d(TAG, "\tlayout-child" + i + ": " + childLeft + ", " + childTop);
@@ -842,6 +886,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
// in accordance with any scroll effects.
mForceScreenScrolled = true;
mRecomputePageSpacing = true;
invalidate();
invalidateCachedOffsets();
}
@@ -898,17 +943,14 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
if (count == 0) {
mChildOffsets = null;
mChildRelativeOffsets = null;
mChildOffsetsWithLayoutScale = null;
return;
}
mChildOffsets = new int[count];
mChildRelativeOffsets = new int[count];
mChildOffsetsWithLayoutScale = new int[count];
for (int i = 0; i < count; i++) {
mChildOffsets[i] = -1;
mChildRelativeOffsets[i] = -1;
mChildOffsetsWithLayoutScale[i] = -1;
}
}
@@ -916,8 +958,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
if (index < 0 || index > getChildCount() - 1) return 0;
final boolean isRtl = isLayoutRtl();
int[] childOffsets = Float.compare(mLayoutScale, 1f) == 0 ?
mChildOffsets : mChildOffsetsWithLayoutScale;
int[] childOffsets = mChildOffsets;
if (childOffsets != null && childOffsets[index] != -1) {
return childOffsets[index];
@@ -925,20 +966,20 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
if (getChildCount() == 0)
return 0;
final int startIndex = isRtl ? getChildCount() - 1 : 0;
final int endIndex = isRtl ? index : index;
final int delta = isRtl ? -1 : 1;
int offset = getRelativeChildOffset(startIndex);
for (int i = startIndex; i != endIndex; i += delta) {
offset += getScaledMeasuredWidth(getPageAt(i)) + mPageSpacing;
offset += getPageAt(i).getMeasuredWidth() + mPageSpacing;
}
if (childOffsets != null) {
childOffsets[index] = offset;
}
return offset;
}
}
protected int getRelativeChildOffset(int index) {
@@ -957,15 +998,6 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
}
}
protected int getScaledMeasuredWidth(View child) {
// This functions are called enough times that it actually makes a difference in the
// profiler -- so just inline the max() here
final int measuredWidth = child.getMeasuredWidth();
final int minWidth = mMinimumWidth;
final int maxWidth = (minWidth > measuredWidth) ? minWidth : measuredWidth;
return (int) (maxWidth * mLayoutScale + 0.5f);
}
void boundByReorderablePages(boolean isReordering, int[] range) {
// Do nothing
}
@@ -1398,7 +1430,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
protected float getScrollProgress(int screenCenter, View v, int page) {
final int halfScreenSize = getViewportWidth() / 2;
int totalDistance = getScaledMeasuredWidth(v) + mPageSpacing;
int totalDistance = v.getMeasuredWidth() + mPageSpacing;
int delta = screenCenter - (getChildOffset(page) -
getRelativeChildOffset(page) + halfScreenSize);
@@ -1672,7 +1704,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
int velocityX = (int) velocityTracker.getXVelocity(activePointerId);
final int deltaX = (int) (x - mDownMotionX);
final int pageWidth = getScaledMeasuredWidth(getPageAt(mCurrentPage));
final int pageWidth = getPageAt(mCurrentPage).getMeasuredWidth();
boolean isSignificantMove = Math.abs(deltaX) > pageWidth *
SIGNIFICANT_MOVE_THRESHOLD;
@@ -1865,30 +1897,8 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
}
}
protected int getChildIndexForRelativeOffset(int relativeOffset) {
final boolean isRtl = isLayoutRtl();
final int childCount = getChildCount();
int left;
int right;
final int startIndex = isRtl ? childCount - 1 : 0;
final int endIndex = isRtl ? -1 : childCount;
final int delta = isRtl ? -1 : 1;
for (int i = startIndex; i != endIndex; i += delta) {
left = getRelativeChildOffset(i);
right = (left + getScaledMeasuredWidth(getPageAt(i)));
if (left <= relativeOffset && relativeOffset <= right) {
return i;
}
}
return -1;
}
protected int getChildWidth(int index) {
// This functions are called enough times that it actually makes a difference in the
// profiler -- so just inline the max() here
final int measuredWidth = getPageAt(index).getMeasuredWidth();
final int minWidth = mMinimumWidth;
return (minWidth > measuredWidth) ? minWidth : measuredWidth;
return getPageAt(index).getMeasuredWidth();
}
int getPageNearestToPoint(float x) {
@@ -1910,7 +1920,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
final int childCount = getChildCount();
for (int i = 0; i < childCount; ++i) {
View layout = (View) getPageAt(i);
int childWidth = getScaledMeasuredWidth(layout);
int childWidth = layout.getMeasuredWidth();
int halfChildWidth = (childWidth / 2);
int childCenter = getViewportOffsetX() + getChildOffset(i) + halfChildWidth;
int distanceFromScreenCenter = Math.abs(childCenter - screenCenter);