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am 0ba9546b: Merge "Adding accessibility support to the PIN lock screen."

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* commit '0ba9546b7b2352a9f10f053e461442f1aa464d1a':
  Adding accessibility support to the PIN lock screen.
This commit is contained in:
Svetoslav Ganov
2011-08-22 12:21:23 -07:00
committed by Android Git Automerger
parent 654701320d 0ba9546b7b
commit 3d8072df44
2 changed files with 120 additions and 8 deletions
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108
core/java/android/inputmethodservice/KeyboardView.java
View File

@@ -28,6 +28,7 @@ import android.graphics.Paint.Align;
import android.graphics.Region.Op;
import android.graphics.drawable.Drawable;
import android.inputmethodservice.Keyboard.Key;
import android.media.AudioManager;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
@@ -39,6 +40,8 @@ import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup.LayoutParams;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.widget.PopupWindow;
import android.widget.TextView;
@@ -175,7 +178,6 @@ public class KeyboardView extends View implements View.OnClickListener {
private boolean mShowTouchPoints = true;
private int mPopupPreviewX;
private int mPopupPreviewY;
private int mWindowY;
private int mLastX;
private int mLastY;
@@ -242,7 +244,11 @@ public class KeyboardView extends View implements View.OnClickListener {
private boolean mKeyboardChanged;
/** The canvas for the above mutable keyboard bitmap */
private Canvas mCanvas;
/** The accessibility manager for accessibility support */
private AccessibilityManager mAccessibilityManager;
/** The audio manager for accessibility support */
private AudioManager mAudioManager;
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
@@ -362,6 +368,10 @@ public class KeyboardView extends View implements View.OnClickListener {
mSwipeThreshold = (int) (500 * getResources().getDisplayMetrics().density);
mDisambiguateSwipe = getResources().getBoolean(
com.android.internal.R.bool.config_swipeDisambiguation);
mAccessibilityManager = AccessibilityManager.getInstance(context);
mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
resetMultiTap();
initGestureDetector();
}
@@ -835,12 +845,16 @@ public class KeyboardView extends View implements View.OnClickListener {
final Key[] keys = mKeys;
if (oldKeyIndex != mCurrentKeyIndex) {
if (oldKeyIndex != NOT_A_KEY && keys.length > oldKeyIndex) {
keys[oldKeyIndex].onReleased(mCurrentKeyIndex == NOT_A_KEY);
Key oldKey = keys[oldKeyIndex];
oldKey.onReleased(mCurrentKeyIndex == NOT_A_KEY);
invalidateKey(oldKeyIndex);
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_HOVER_EXIT, oldKey.codes[0]);
}
if (mCurrentKeyIndex != NOT_A_KEY && keys.length > mCurrentKeyIndex) {
keys[mCurrentKeyIndex].onPressed();
Key newKey = keys[mCurrentKeyIndex];
newKey.onPressed();
invalidateKey(mCurrentKeyIndex);
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_HOVER_ENTER, newKey.codes[0]);
}
}
// If key changed and preview is on ...
@@ -940,6 +954,47 @@ public class KeyboardView extends View implements View.OnClickListener {
mPreviewText.setVisibility(VISIBLE);
}
private void sendAccessibilityEvent(int eventType, int code) {
if (mAccessibilityManager.isEnabled()) {
AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
onInitializeAccessibilityEvent(event);
// Add text only if headset is used to avoid leaking passwords.
if (mAudioManager.isBluetoothA2dpOn() || mAudioManager.isWiredHeadsetOn()) {
String text = null;
switch (code) {
case Keyboard.KEYCODE_ALT:
text = mContext.getString(R.string.keyboardview_keycode_alt);
break;
case Keyboard.KEYCODE_CANCEL:
text = mContext.getString(R.string.keyboardview_keycode_cancel);
break;
case Keyboard.KEYCODE_DELETE:
text = mContext.getString(R.string.keyboardview_keycode_delete);
break;
case Keyboard.KEYCODE_DONE:
text = mContext.getString(R.string.keyboardview_keycode_done);
break;
case Keyboard.KEYCODE_MODE_CHANGE:
text = mContext.getString(R.string.keyboardview_keycode_mode_change);
break;
case Keyboard.KEYCODE_SHIFT:
text = mContext.getString(R.string.keyboardview_keycode_shift);
break;
case '\n':
text = mContext.getString(R.string.keyboardview_keycode_enter);
break;
default:
text = String.valueOf((char) code);
}
event.getText().add(text);
} else {
event.getText().add(mContext.getString(
R.string.keyboard_headset_required_to_hear_password));
}
mAccessibilityManager.sendAccessibilityEvent(event);
}
}
/**
* Requests a redraw of the entire keyboard. Calling {@link #invalidate} is not sufficient
* because the keyboard renders the keys to an off-screen buffer and an invalidate() only
@@ -1074,11 +1129,49 @@ public class KeyboardView extends View implements View.OnClickListener {
return false;
}
private long mOldEventTime;
private boolean mUsedVelocity;
@Override
protected boolean dispatchHoverEvent(MotionEvent event) {
// If touch exploring is enabled we ignore touch events and transform
// the stream of hover events as touch events. This allows one consistent
// event stream to drive the keyboard since during touch exploring the
// first touch generates only hover events and tapping on the same
// location generates hover and touch events.
if (mAccessibilityManager.isEnabled()
&& mAccessibilityManager.isTouchExplorationEnabled()
&& event.getPointerCount() == 1) {
final int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_HOVER_ENTER:
event.setAction(MotionEvent.ACTION_DOWN);
break;
case MotionEvent.ACTION_HOVER_MOVE:
event.setAction(MotionEvent.ACTION_MOVE);
break;
case MotionEvent.ACTION_HOVER_EXIT:
event.setAction(MotionEvent.ACTION_UP);
break;
}
onTouchEventInternal(event);
return true;
}
return super.dispatchHoverEvent(event);
}
@Override
public boolean onTouchEvent(MotionEvent me) {
public boolean onTouchEvent(MotionEvent event) {
// If touch exploring is enabled we ignore touch events and transform
// the stream of hover events as touch events. This allows one consistent
// event stream to drive the keyboard since during touch exploring the
// first touch generates only hover events and tapping on the same
// location generates hover and touch events.
if (mAccessibilityManager.isEnabled()
&& mAccessibilityManager.isTouchExplorationEnabled()) {
return true;
}
return onTouchEventInternal(event);
}
private boolean onTouchEventInternal(MotionEvent me) {
// Convert multi-pointer up/down events to single up/down events to
// deal with the typical multi-pointer behavior of two-thumb typing
final int pointerCount = me.getPointerCount();
@@ -1126,7 +1219,6 @@ public class KeyboardView extends View implements View.OnClickListener {
touchY += mVerticalCorrection;
final int action = me.getAction();
final long eventTime = me.getEventTime();
mOldEventTime = eventTime;
int keyIndex = getKeyIndices(touchX, touchY, null);
mPossiblePoly = possiblePoly;

20
core/res/res/values/strings.xml
View File

@@ -3068,6 +3068,26 @@
<!-- Description of the not pressed state of a ToggleButton. [CHAR LIMIT=NONE] -->
<string name="togglebutton_not_pressed">not pressed</string>
<!-- KeyboardView - accessibility support -->
<!-- Description of the Alt button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_alt">Alt</string>
<!-- Description of the Cancel button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_cancel">Cancel</string>
<!-- Description of the Delete button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_delete">Delete</string>
<!-- Description of the Done button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_done">Done</string>
<!-- Description of the Mode change button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_mode_change">Mode change</string>
<!-- Description of the Shift button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_shift">Shift</string>
<!-- Description of the Enter button in a KeyboardView. [CHAR LIMIT=NONE] -->
<string name="keyboardview_keycode_enter">Enter</string>
<!-- Announce that a headset is required to hear keyboard keys while typing a password. [CHAR LIMIT=NONE] -->
<string name="keyboard_headset_required_to_hear_password">Key. Headset required to hear
keys while typing a password.</string>
<!-- Content description for the action bar "home" affordance. [CHAR LIMIT=NONE] -->
<string name="action_bar_home_description">Navigate home</string>
<!-- Content description for the action bar "up" affordance. [CHAR LIMIT=NONE] -->