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Restrict bogus events hack to certain classes of tablets

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Bug: 9061320
Change-Id: Ib8c6a5e6db5da99c447bc00867fed51ca959cc3a
This commit is contained in:
Tadashi G. Takaoka 2013-07-17 16:58:11 +09:00
parent cc54032b39
commit 536438a45e
2 changed files with 35 additions and 11 deletions
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8
java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
View file

@ -21,7 +21,6 @@ import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
@ -67,7 +66,6 @@ import com.android.inputmethod.latin.SuggestedWords;
import com.android.inputmethod.latin.define.ProductionFlag;
import com.android.inputmethod.latin.utils.CollectionUtils;
import com.android.inputmethod.latin.utils.CoordinateUtils;
import com.android.inputmethod.latin.utils.ResourceUtils;
import com.android.inputmethod.latin.utils.StaticInnerHandlerWrapper;
import com.android.inputmethod.latin.utils.StringUtils;
import com.android.inputmethod.latin.utils.TypefaceUtils;
@ -487,11 +485,7 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
final boolean hasDistinctMultitouch = context.getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT);
mHasDistinctMultitouch = hasDistinctMultitouch && !forceNonDistinctMultitouch;
final Resources res = getResources();
final boolean needsPhantomSuddenMoveEventHack = Boolean.parseBoolean(
ResourceUtils.getDeviceOverrideValue(
res, R.array.phantom_sudden_move_event_device_list));
PointerTracker.init(needsPhantomSuddenMoveEventHack);
PointerTracker.init(getResources());
mPreviewPlacerView = new PreviewPlacerView(context, attrs);
final TypedArray mainKeyboardViewAttr = context.obtainStyledAttributes(

38
java/src/com/android/inputmethod/keyboard/PointerTracker.java
View file

@ -16,8 +16,10 @@
package com.android.inputmethod.keyboard;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.os.SystemClock;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
@ -34,6 +36,7 @@ import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.define.ProductionFlag;
import com.android.inputmethod.latin.utils.CollectionUtils;
import com.android.inputmethod.latin.utils.CoordinateUtils;
import com.android.inputmethod.latin.utils.ResourceUtils;
import com.android.inputmethod.research.ResearchLogger;
import java.util.ArrayList;
@ -164,8 +167,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
// Move this threshold to resource.
// TODO: Device specific parameter would be better for device specific hack?
private static final float PHANTOM_SUDDEN_MOVE_THRESHOLD = 0.25f; // in keyWidth
// This hack might be device specific.
private static final boolean sNeedsProximateBogusDownMoveUpEventHack = true;
// This hack is applied to certain classes of tablets.
// See {@link #needsProximateBogusDownMoveUpEventHack(Resources)}.
private static boolean sNeedsProximateBogusDownMoveUpEventHack;
private static final ArrayList<PointerTracker> sTrackers = CollectionUtils.newArrayList();
private static final PointerTrackerQueue sPointerTrackerQueue = new PointerTrackerQueue();
@ -334,8 +338,34 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
private final GestureStrokeWithPreviewPoints mGestureStrokeWithPreviewPoints;
public static void init(final boolean needsPhantomSuddenMoveEventHack) {
sNeedsPhantomSuddenMoveEventHack = needsPhantomSuddenMoveEventHack;
private static final int SMALL_TABLET_SMALLEST_WIDTH = 600; // dp
private static final int LARGE_TABLET_SMALLEST_WIDTH = 768; // dp
private static boolean needsProximateBogusDownMoveUpEventHack(final Resources res) {
// The proximate bogus down move up event hack is needed for a device such like,
// 1) is large tablet, or 2) is small tablet and the screen density is less than hdpi.
// Though it seems odd to use screen density as criteria of the quality of the touch
// screen, the small table that has a less density screen than hdpi most likely has been
// made with the touch screen that needs the hack.
final int sw = res.getConfiguration().smallestScreenWidthDp;
final boolean isLargeTablet = (sw >= LARGE_TABLET_SMALLEST_WIDTH);
final boolean isSmallTablet =
(sw >= SMALL_TABLET_SMALLEST_WIDTH && sw < LARGE_TABLET_SMALLEST_WIDTH);
final int densityDpi = res.getDisplayMetrics().densityDpi;
final boolean hasLowDensityScreen = (densityDpi < DisplayMetrics.DENSITY_HIGH);
final boolean needsTheHack = isLargeTablet || (isSmallTablet && hasLowDensityScreen);
if (DEBUG_MODE) {
Log.d(TAG, "needsProximateBogusDownMoveUpEventHack=" + needsTheHack
+ " smallestScreenWidthDp=" + sw + " densityDpi=" + densityDpi);
}
return needsTheHack;
}
public static void init(final Resources res) {
sNeedsPhantomSuddenMoveEventHack = Boolean.parseBoolean(
ResourceUtils.getDeviceOverrideValue(
res, R.array.phantom_sudden_move_event_device_list));
sNeedsProximateBogusDownMoveUpEventHack = needsProximateBogusDownMoveUpEventHack(res);
sParams = PointerTrackerParams.DEFAULT;
sGestureStrokeParams = GestureStrokeParams.DEFAULT;
sGesturePreviewParams = GestureStrokePreviewParams.DEFAULT;