Scolling using arrow keys with padding (5435a060) · Commits · e / os / android_frameworks_base

core/java/android/widget/ScrollView.java

+2 −4

Original line number	Diff line number	Diff line
		@@ -832,7 +832,7 @@ public class ScrollView extends FrameLayout {
		int count = getChildCount();
		if (count > 0) {
		View view = getChildAt(count - 1);
		mTempRect.bottom = view.getBottom();
		mTempRect.bottom = view.getBottom() + mPaddingBottom;
		mTempRect.top = mTempRect.bottom - height;
		}
		}
		@@ -912,9 +912,7 @@ public class ScrollView extends FrameLayout {
		} else if (direction == View.FOCUS_DOWN) {
		if (getChildCount() > 0) {
		int daBottom = getChildAt(0).getBottom();

		int screenBottom = getScrollY() + getHeight();

		int screenBottom = getScrollY() + getHeight() - mPaddingBottom;
		if (daBottom - screenBottom < maxJump) {
		scrollDelta = daBottom - screenBottom;
		}

core/tests/coretests/AndroidManifest.xml

+7 −0

Original line number	Diff line number	Diff line
		@@ -411,6 +411,13 @@
		</intent-filter>
		</activity>

		<activity android:name="android.widget.scroll.arrowscroll.MultiPageTextWithPadding" android:label="arrowscrollMultiPageTextWithPadding">
		<intent-filter>
		<action android:name="android.intent.action.MAIN" />
		<category android:name="android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST" />
		</intent-filter>
		</activity>

		<activity android:name="android.view.Include" android:label="IncludeTag">
		<intent-filter>
		<action android:name="android.intent.action.MAIN" />

core/tests/coretests/src/android/util/ScrollViewScenario.java

+17 −2

Original line number	Diff line number	Diff line
		@@ -61,6 +61,7 @@ public abstract class ScrollViewScenario extends Activity {

		/**
		* Partially implement ViewFactory given a height ratio.
		* A negative height ratio means that WRAP_CONTENT will be used as height
		*/
		private static abstract class ViewFactoryBase implements ViewFactory {

		@@ -87,6 +88,9 @@ public abstract class ScrollViewScenario extends Activity {

		List<ViewFactory> mViewFactories = Lists.newArrayList();

		int mTopPadding = 0;
		int mBottomPadding = 0;

		/**
		* Add a text view.
		* @param text The text of the text view.
		@@ -186,6 +190,13 @@ public abstract class ScrollViewScenario extends Activity {
		});
		return this;
		}

		public Params addPaddingToScrollView(int topPadding, int bottomPadding) {
		mTopPadding = topPadding;
		mBottomPadding = bottomPadding;

		return this;
		}
		}

		/**
		@@ -239,13 +250,17 @@ public abstract class ScrollViewScenario extends Activity {

		// create views specified by params
		for (ViewFactory viewFactory : params.mViewFactories) {
		int height = ViewGroup.LayoutParams.WRAP_CONTENT;
		if (viewFactory.getHeightRatio() >= 0) {
		height = (int) (viewFactory.getHeightRatio() * screenHeight);
		}
		final LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
		ViewGroup.LayoutParams.MATCH_PARENT,
		(int) (viewFactory.getHeightRatio() * screenHeight));
		ViewGroup.LayoutParams.MATCH_PARENT, height);
		mLinearLayout.addView(viewFactory.create(this), lp);
		}

		mScrollView = createScrollView();
		mScrollView.setPadding(0, params.mTopPadding, 0, params.mBottomPadding);
		mScrollView.addView(mLinearLayout, new ViewGroup.LayoutParams(
		ViewGroup.LayoutParams.MATCH_PARENT,
		ViewGroup.LayoutParams.MATCH_PARENT));

core/tests/coretests/src/android/widget/scroll/arrowscroll/MultiPageTextWithPadding.java

0 → 100644

+38 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.widget.scroll.arrowscroll;

		import android.util.ScrollViewScenario;

		/**
		* One TextView with a text covering several pages. Padding is added
		* above and below the ScrollView.
		*/
		public class MultiPageTextWithPadding extends ScrollViewScenario {

		@Override
		protected void init(Params params) {

		String text = "This is a long text.";
		String longText = "First text.";
		for (int i = 0; i < 300; i++) {
		longText = longText + " " + text;
		}
		longText = longText + " Last text.";
		params.addTextView(longText, -1.0f).addPaddingToScrollView(50, 50);
		}
		}

core/tests/coretests/src/android/widget/scroll/arrowscroll/MultiPageTextWithPaddingTest.java

0 → 100644

+68 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 Sony Ericsson Mobile Communications AB.
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.widget.scroll.arrowscroll;

		import android.widget.scroll.arrowscroll.MultiPageTextWithPadding;
		import android.test.ActivityInstrumentationTestCase;
		import android.test.suitebuilder.annotation.LargeTest;
		import android.test.suitebuilder.annotation.MediumTest;
		import android.view.KeyEvent;
		import android.widget.TextView;
		import android.widget.ScrollView;

		public class MultiPageTextWithPaddingTest extends
		ActivityInstrumentationTestCase<MultiPageTextWithPadding> {

		private ScrollView mScrollView;

		private TextView mTextView;

		public MultiPageTextWithPaddingTest() {
		super("com.android.frameworks.coretests", MultiPageTextWithPadding.class);
		}

		@Override
		protected void setUp() throws Exception {
		super.setUp();

		mScrollView = getActivity().getScrollView();
		mTextView = getActivity().getContentChildAt(0);
		}

		@MediumTest
		public void testPreconditions() {
		assertTrue("text should not fit on screen",
		mTextView.getHeight() > mScrollView.getHeight());
		}

		@LargeTest
		public void testScrollDownToBottom() throws Exception {
		// Calculate the number of arrow scrolls needed to reach the bottom
		int scrollsNeeded = (int)Math.ceil(Math.max(0.0f,
		(mTextView.getHeight() - mScrollView.getHeight()))
		/ mScrollView.getMaxScrollAmount());
		for (int i = 0; i < scrollsNeeded; i++) {
		sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
		}

		assertEquals(
		"should be fully scrolled to bottom",
		getActivity().getLinearLayout().getHeight()
		- (mScrollView.getHeight() - mScrollView.getPaddingTop() - mScrollView
		.getPaddingBottom()), mScrollView.getScrollY());
		}
		}