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fix strange space at the top when FlexWrap (#522) #530

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fix strange space at the top when FlexWrap (#522) #530

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168c1f4
fix strange space at the top when FlexWrap (#522)
sheckspir Jan 15, 2020
7e746e0
Merge remote-tracking branch 'google/master' into bf_522
sheckspir Jan 18, 2020
d773dd6
special using of orientationHelper for NOWRAP flexWrap. Add some test…
sheckspir Jan 22, 2020
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176 changes: 176 additions & 0 deletions .../androidTest/java/com/google/android/flexbox/test/FlexboxLayoutManagerConfigChangeTest.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ import androidx.test.filters.MediumTest
import androidx.test.rule.ActivityTestRule
import androidx.test.runner.AndroidJUnit4
import com.google.android.flexbox.FlexDirection
import com.google.android.flexbox.FlexWrap
import com.google.android.flexbox.FlexboxLayoutManager
import org.hamcrest.Matchers.`is`
import org.hamcrest.core.IsNot.not
Expand Down Expand Up @@ -100,6 +101,181 @@ class FlexboxLayoutManagerConfigChangeTest {
assertThat(firstLine.mainSize, `is`(not(firstLineAfterRotation.mainSize)))
}


@Test
@FlakyTest
@Throws(Throwable::class)
fun testPaddingTop_row_nowrap_topless() {
val activity = activityRule.activity
val layoutManager = FlexboxLayoutManager(activity)
layoutManager.flexWrap = FlexWrap.NOWRAP
layoutManager.flexDirection = FlexDirection.ROW
val adapter = TestAdapter()
val topPadding = 0
val leftPadding = 20
activityRule.runOnUiThread{
activity.setContentView(R.layout.recyclerview)
val recyclerView = activity.findViewById<RecyclerView>(R.id.recyclerview)
recyclerView.setPadding(leftPadding, topPadding, 0,0)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
for (i in 0..20) {
var lp = createLayoutParams(activity, 80, 50)
adapter.addItem(lp)
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

val firstChild = layoutManager.getChildAt(0)!!
val lastChild = layoutManager.getChildAt(layoutManager.childCount - 1)!!
assertThat(firstChild.top, IsEqualAllowingError.isEqualAllowingError(topPadding))
assertThat(firstChild.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))
assertThat(lastChild.top, IsEqualAllowingError.isEqualAllowingError(topPadding))

activityRule.runOnUiThread {
val orientation = activity.resources.configuration.orientation
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
} else {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

val firstChildAfterRotate = layoutManager.getChildAt(0)!!
val lastChildAfterRotate = layoutManager.getChildAt(layoutManager.childCount - 1)!!
assertThat(firstChildAfterRotate.top, IsEqualAllowingError.isEqualAllowingError(topPadding))
assertThat(firstChildAfterRotate.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))
assertThat(lastChildAfterRotate.top, IsEqualAllowingError.isEqualAllowingError(topPadding))

activityRule.runOnUiThread {
val orientation = activity.resources.configuration.orientation
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
} else {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

}

@Test
@FlakyTest
@Throws(Throwable::class)
fun testPaddingTop_row_nowrap_leftless() {
val activity = activityRule.activity
val layoutManager = FlexboxLayoutManager(activity)
layoutManager.flexWrap = FlexWrap.NOWRAP
layoutManager.flexDirection = FlexDirection.ROW
val adapter = TestAdapter()
val topPadding = 40
val leftPadding = 20
activityRule.runOnUiThread{
activity.setContentView(R.layout.recyclerview)
val recyclerView = activity.findViewById<RecyclerView>(R.id.recyclerview)
recyclerView.setPadding(leftPadding, topPadding, 0,0)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
for (i in 0..20) {
var lp = createLayoutParams(activity, 80, 50)
adapter.addItem(lp)
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

val firstChild = layoutManager.getChildAt(0)!!
val lastChild = layoutManager.getChildAt(layoutManager.childCount - 1)!!
assertThat(firstChild.top, IsEqualAllowingError.isEqualAllowingError(topPadding))
assertThat(firstChild.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))
assertThat(lastChild.top, IsEqualAllowingError.isEqualAllowingError(topPadding))

activityRule.runOnUiThread {
val orientation = activity.resources.configuration.orientation
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
} else {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

val firstChildAfterRotate = layoutManager.getChildAt(0)!!
val lastChildAfterRotate = layoutManager.getChildAt(layoutManager.childCount - 1)!!
assertThat(firstChildAfterRotate.top, IsEqualAllowingError.isEqualAllowingError(topPadding))
assertThat(firstChildAfterRotate.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))
assertThat(lastChildAfterRotate.top, IsEqualAllowingError.isEqualAllowingError(topPadding))

activityRule.runOnUiThread {
val orientation = activity.resources.configuration.orientation
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
} else {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

}

@Test
@FlakyTest
@Throws(Throwable::class)
fun testPaddingTop_column_nowrap_topless() {
val activity = activityRule.activity
val layoutManager = FlexboxLayoutManager(activity)
layoutManager.flexWrap = FlexWrap.NOWRAP
layoutManager.flexDirection = FlexDirection.COLUMN
val adapter = TestAdapter()
val topPadding = 0
val leftPadding = 20
activityRule.runOnUiThread{
activity.setContentView(R.layout.recyclerview)
val recyclerView = activity.findViewById<RecyclerView>(R.id.recyclerview)
recyclerView.setPadding(leftPadding, topPadding, 0,0)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
for (i in 0..20) {
var lp = createLayoutParams(activity, 80, 50)
adapter.addItem(lp)
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

val firstChild = layoutManager.getChildAt(0)!!
val lastChild = layoutManager.getChildAt(layoutManager.childCount - 1)!!
assertThat(firstChild.top, IsEqualAllowingError.isEqualAllowingError(topPadding))
assertThat(firstChild.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))
assertThat(lastChild.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))

activityRule.runOnUiThread {
val orientation = activity.resources.configuration.orientation
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
} else {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

val firstChildAfterRotate = layoutManager.getChildAt(0)!!
val lastChildAfterRotate = layoutManager.getChildAt(layoutManager.childCount - 1)!!
assertThat(firstChildAfterRotate.top, IsEqualAllowingError.isEqualAllowingError(topPadding))
assertThat(firstChildAfterRotate.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))
assertThat(lastChildAfterRotate.left, IsEqualAllowingError.isEqualAllowingError(leftPadding))

activityRule.runOnUiThread {
val orientation = activity.resources.configuration.orientation
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
} else {
activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
}
}
InstrumentationRegistry.getInstrumentation().waitForIdleSync()

}

@Test
@FlakyTest
@Throws(Throwable::class)
Expand Down
37 changes: 26 additions & 11 deletions flexbox/src/main/java/com/google/android/flexbox/FlexboxLayoutManager.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1076,7 +1076,10 @@ private boolean updateAnchorFromPendingState(RecyclerView.State state, AnchorInf
anchorInfo.mPosition = mPendingScrollPosition;
anchorInfo.mFlexLinePosition = mFlexboxHelper.mIndexToFlexLine[anchorInfo.mPosition];
if (mPendingSavedState != null && mPendingSavedState.hasValidAnchor(state.getItemCount())) {
anchorInfo.mCoordinate = mOrientationHelper.getStartAfterPadding() +
OrientationHelper tempOrientationHelper = mFlexWrap == FlexWrap.NOWRAP?
mSubOrientationHelper
: mOrientationHelper;
anchorInfo.mCoordinate = tempOrientationHelper.getStartAfterPadding() +
savedState.mAnchorOffset;
anchorInfo.mAssignedFromSavedState = true;
anchorInfo.mFlexLinePosition = NO_POSITION;
Expand Down Expand Up @@ -1121,11 +1124,14 @@ private boolean updateAnchorFromPendingState(RecyclerView.State state, AnchorInf
}

// TODO: Support reverse layout when flex wrap == FlexWrap.WRAP_REVERSE
OrientationHelper tempOrientationHelper = mFlexWrap == FlexWrap.NOWRAP
? mSubOrientationHelper
: mOrientationHelper;
if (!isMainAxisDirectionHorizontal() && mIsRtl) {
anchorInfo.mCoordinate = mPendingScrollPositionOffset
- mOrientationHelper.getEndPadding();
- tempOrientationHelper.getEndPadding();
} else {
anchorInfo.mCoordinate = mOrientationHelper.getStartAfterPadding()
anchorInfo.mCoordinate = tempOrientationHelper.getStartAfterPadding()
+ mPendingScrollPositionOffset;
}
return true;
Expand Down Expand Up @@ -1710,11 +1716,14 @@ private void updateLayoutStateToFillEnd(AnchorInfo anchorInfo, boolean fromNextL
} else {
mLayoutState.mInfinite = false;
}
OrientationHelper orientationHelper = mFlexWrap == FlexWrap.NOWRAP
? mSubOrientationHelper
: mOrientationHelper;
if (!isMainAxisDirectionHorizontal() && mIsRtl) {
mLayoutState.mAvailable = anchorInfo.mCoordinate - getPaddingRight();
} else {
mLayoutState.mAvailable =
mOrientationHelper.getEndAfterPadding() - anchorInfo.mCoordinate;
mLayoutState.mAvailable = orientationHelper.getEndAfterPadding()
- anchorInfo.mCoordinate;
}
mLayoutState.mPosition = anchorInfo.mPosition;
mLayoutState.mItemDirection = LayoutState.ITEM_DIRECTION_TAIL;
Expand Down Expand Up @@ -1752,11 +1761,14 @@ private void updateLayoutStateToFillStart(AnchorInfo anchorInfo, boolean fromPre
} else {
mLayoutState.mInfinite = false;
}
OrientationHelper orientationHelper = mFlexWrap == FlexWrap.NOWRAP
? mSubOrientationHelper
: mOrientationHelper;
if (!isMainAxisDirectionHorizontal() && mIsRtl) {
mLayoutState.mAvailable = mParent.getWidth() - anchorInfo.mCoordinate
- mOrientationHelper.getStartAfterPadding();
- orientationHelper.getStartAfterPadding();
} else {
mLayoutState.mAvailable = anchorInfo.mCoordinate - mOrientationHelper
mLayoutState.mAvailable = anchorInfo.mCoordinate - orientationHelper
.getStartAfterPadding();
}
mLayoutState.mPosition = anchorInfo.mPosition;
Expand Down Expand Up @@ -2878,12 +2890,15 @@ private void reset() {
}

private void assignCoordinateFromPadding() {
OrientationHelper tempOrientationHelper = mFlexWrap == FlexWrap.NOWRAP
? mSubOrientationHelper
: mOrientationHelper;
if (!isMainAxisDirectionHorizontal() && mIsRtl) {
mCoordinate = mLayoutFromEnd ? mOrientationHelper.getEndAfterPadding()
: getWidth() - mOrientationHelper.getStartAfterPadding();
mCoordinate = mLayoutFromEnd ? tempOrientationHelper.getEndAfterPadding()
: getWidth() - tempOrientationHelper.getStartAfterPadding();
} else {
mCoordinate = mLayoutFromEnd ? mOrientationHelper.getEndAfterPadding()
: mOrientationHelper.getStartAfterPadding();
mCoordinate = mLayoutFromEnd ? tempOrientationHelper.getEndAfterPadding()
: tempOrientationHelper.getStartAfterPadding();
}
}

Expand Down