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Code Issues Releases Wiki Activity

Merge pull request #80 from andrewachen/unify_gesturedetector

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Make the K9Activity.GestureDetector reusable
This commit is contained in:
Andrew Chen 2011-11-02 18:04:01 -07:00
commit 674c39f3d5
7 changed files with 88 additions and 46 deletions
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50
src/com/fsck/k9/activity/K9Activity.java
View File

@ -14,15 +14,15 @@ import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ScrollView;
import com.fsck.k9.K9;
import com.fsck.k9.helper.DateFormatter;
import com.fsck.k9.view.ToggleScrollView;
public class K9Activity extends Activity {
private GestureDetector gestureDetector;
protected ScrollView mTopView;
protected ToggleScrollView mTopView;
@Override
public void onCreate(Bundle icicle) {
@ -86,12 +86,26 @@ public class K9Activity extends Activity {
public java.text.DateFormat getDateFormat() {
return mDateFormat;
}
protected void onNext() {
}
protected void onPrevious() {
/**
* Called when a swipe from right to left is handled by {@link MyGestureDetector}. See
* {@link android.view.GestureDetector.OnGestureListener#onFling(android.view.MotionEvent, android.view.MotionEvent, float, float)}
* for more information on the {@link MotionEvent}s being passed.
* @param e1 First down motion event that started the fling.
* @param e2 The move motion event that triggered the current onFling.
*/
protected void onSwipeRightToLeft(final MotionEvent e1, final MotionEvent e2) {
}
/**
* Called when a swipe from left to right is handled by {@link MyGestureDetector}. See
* {@link android.view.GestureDetector.OnGestureListener#onFling(android.view.MotionEvent, android.view.MotionEvent, float, float)}
* for more information on the {@link MotionEvent}s being passed.
* @param e1 First down motion event that started the fling.
* @param e2 The move motion event that triggered the current onFling.
*/
protected void onSwipeLeftToRight(final MotionEvent e1, final MotionEvent e2) {
}
protected Animation inFromRightAnimation() {
return slideAnimation(0.0f, +1.0f);
@ -114,6 +128,25 @@ public class K9Activity extends Activity {
}
class MyGestureDetector extends SimpleOnGestureListener {
private boolean gesturesEnabled = false;
/**
* Creates a new {@link android.view.GestureDetector.OnGestureListener}. Enabled/disabled based upon
* {@link com.fsck.k9.K9#gesturesEnabled()}}.
*/
public MyGestureDetector() {
super();
}
/**
* Create a new {@link android.view.GestureDetector.OnGestureListener}.
* @param gesturesEnabled Setting to <code>true</code> will enable gesture detection,
* regardless of the system-wide gesture setting.
*/
public MyGestureDetector(final boolean gesturesEnabled) {
super();
this.gesturesEnabled = gesturesEnabled;
}
private static final float SWIPE_MIN_DISTANCE_DIP = 130.0f;
private static final float SWIPE_MAX_OFF_PATH_DIP = 250f;
@ -137,7 +170,8 @@ public class K9Activity extends Activity {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
if (K9.gesturesEnabled()) {
// Do fling-detection if gestures are force-enabled or we have system-wide gestures enabled.
if (gesturesEnabled || K9.gesturesEnabled()) {
// Convert the dips to pixels
final float mGestureScale = getResources().getDisplayMetrics().density;
int min_distance = (int)(SWIPE_MIN_DISTANCE_DIP * mGestureScale + 0.5f);
@ -150,9 +184,9 @@ public class K9Activity extends Activity {
return false;
// right to left swipe
if (e1.getX() - e2.getX() > min_distance && Math.abs(velocityX) > min_velocity) {
onNext();
onSwipeRightToLeft(e1, e2);
} else if (e2.getX() - e1.getX() > min_distance && Math.abs(velocityX) > min_velocity) {
onPrevious();
onSwipeLeftToRight(e1, e2);
}
} catch (Exception e) {
// nothing

51
src/com/fsck/k9/activity/MessageList.java
View File

@ -818,7 +818,7 @@ public class MessageList
mBatchDoneButton.setOnClickListener(this);
// Gesture detection
gestureDetector = new GestureDetector(new MyGestureDetector());
gestureDetector = new GestureDetector(new MyGestureDetector(true));
gestureListener = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
@ -1660,35 +1660,34 @@ public class MessageList
}
}
class MyGestureDetector extends SimpleOnGestureListener {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
if (e2 == null || e1 == null)
return true;
@Override
protected void onSwipeRightToLeft(final MotionEvent e1, final MotionEvent e2) {
// Handle right-to-left as an un-select
handleSwipe(e1, false);
}
float deltaX = e2.getX() - e1.getX(),
deltaY = e2.getY() - e1.getY();
@Override
protected void onSwipeLeftToRight(final MotionEvent e1, final MotionEvent e2) {
// Handle left-to-right as a select.
handleSwipe(e1, true);
}
boolean movedAcross = (Math.abs(deltaX) > Math.abs(deltaY * 4));
boolean steadyHand = (Math.abs(deltaX / deltaY) > 2);
/**
* Handle a select or unselect swipe event
* @param downMotion Event that started the swipe
* @param selected true if this was an attempt to select (i.e. left to right).
*/
private void handleSwipe(final MotionEvent downMotion, final boolean selected) {
int position = mListView.pointToPosition((int) downMotion.getX(), (int) downMotion.getY());
if (position != AdapterView.INVALID_POSITION) {
MessageInfoHolder msgInfoHolder = (MessageInfoHolder) mAdapter.getItem(position);
if (movedAcross && steadyHand) {
boolean selected = (deltaX > 0);
int position = mListView.pointToPosition((int)e1.getX(), (int)e1.getY());
if (position != AdapterView.INVALID_POSITION) {
MessageInfoHolder msgInfoHolder = (MessageInfoHolder) mAdapter.getItem(position);
if (msgInfoHolder != null && msgInfoHolder.selected != selected) {
msgInfoHolder.selected = selected;
mSelectedCount += (selected ? 1 : -1);
mAdapter.notifyDataSetChanged();
toggleBatchButtons();
}
}
if (msgInfoHolder != null && msgInfoHolder.selected != selected) {
msgInfoHolder.selected = selected;
mSelectedCount += (selected ? 1 : -1);
mAdapter.notifyDataSetChanged();
toggleBatchButtons();
}
return false;
}
}

29
src/com/fsck/k9/activity/MessageView.java
View File

@ -82,7 +82,6 @@ public class MessageView extends K9Activity implements OnClickListener {
private View mArchive;
private View mMove;
private View mSpam;
private ToggleScrollView mToggleScrollView;
private Account mAccount;
private MessageReference mMessageReference;
private ArrayList<MessageReference> mMessageReferences;
@ -132,14 +131,14 @@ public class MessageView extends K9Activity implements OnClickListener {
public boolean dispatchTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_UP) {
// Text selection is finished. Allow scrolling again.
mToggleScrollView.setScrolling(true);
mTopView.setScrolling(true);
} else if (K9.zoomControlsEnabled()) {
// If we have system zoom controls enabled, disable scrolling so the screen isn't wiggling around while
// trying to zoom.
if (ev.getAction() == MotionEvent.ACTION_POINTER_2_DOWN) {
mToggleScrollView.setScrolling(false);
mTopView.setScrolling(false);
} else if (ev.getAction() == MotionEvent.ACTION_POINTER_2_UP) {
mToggleScrollView.setScrolling(true);
mTopView.setScrolling(true);
}
}
return super.dispatchTouchEvent(ev);
@ -187,7 +186,7 @@ public class MessageView extends K9Activity implements OnClickListener {
* Selecting text started via shift key. Disable scrolling as
* this causes problems when selecting text.
*/
mToggleScrollView.setScrolling(false);
mTopView.setScrolling(false);
break;
}
case KeyEvent.KEYCODE_DEL: {
@ -379,7 +378,7 @@ public class MessageView extends K9Activity implements OnClickListener {
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.message_view);
mTopView = mToggleScrollView = (ToggleScrollView) findViewById(R.id.top_view);
mTopView = (ToggleScrollView) findViewById(R.id.top_view);
mMessageView = (SingleMessageView) findViewById(R.id.message_view);
//set a callback for the attachment view. With this callback the attachmentview
@ -871,7 +870,22 @@ public class MessageView extends K9Activity implements OnClickListener {
}
}
/**
* Handle a right-to-left swipe as "move to next message."
*/
@Override
protected void onSwipeRightToLeft(MotionEvent e1, MotionEvent e2) {
onNext();
}
/**
* Handle a left-to-right swipe as "move to previous message."
*/
@Override
protected void onSwipeLeftToRight(MotionEvent e1, MotionEvent e2) {
onPrevious();
}
protected void onNext() {
if (mNextMessage == null) {
Toast.makeText(this, getString(R.string.end_of_folder), Toast.LENGTH_SHORT).show();
@ -886,7 +900,6 @@ public class MessageView extends K9Activity implements OnClickListener {
mNext.requestFocus();
}
@Override
protected void onPrevious() {
if (mPreviousMessage == null) {
Toast.makeText(this, getString(R.string.end_of_folder), Toast.LENGTH_SHORT).show();
@ -1019,7 +1032,7 @@ public class MessageView extends K9Activity implements OnClickListener {
});
break;
case R.id.select_text:
mToggleScrollView.setScrolling(false);
mTopView.setScrolling(false);
mMessageView.beginSelectingText();
break;
default:

1
src/com/fsck/k9/activity/setup/AccountSetupBasics.java
View File

@ -240,7 +240,6 @@ public class AccountSetupBasics extends K9Activity
}
}
@Override
protected void onNext() {
String email = mEmailView.getText().toString();
String[] emailParts = splitEmail(email);

1
src/com/fsck/k9/activity/setup/AccountSetupIncoming.java
View File

@ -385,7 +385,6 @@ public class AccountSetupIncoming extends K9Activity implements OnClickListener
}
}
@Override
protected void onNext() {
try {
int securityType = (Integer)((SpinnerOption)mSecurityTypeView.getSelectedItem()).value;

1
src/com/fsck/k9/activity/setup/AccountSetupNames.java
View File

@ -79,7 +79,6 @@ public class AccountSetupNames extends K9Activity implements OnClickListener {
Utility.setCompoundDrawablesAlpha(mDoneButton, mDoneButton.isEnabled() ? 255 : 128);
}
@Override
protected void onNext() {
if (Utility.requiredFieldValid(mDescription)) {
mAccount.setDescription(mDescription.getText().toString());

1
src/com/fsck/k9/activity/setup/AccountSetupOutgoing.java
View File

@ -285,7 +285,6 @@ public class AccountSetupOutgoing extends K9Activity implements OnClickListener,
}
}
@Override
protected void onNext() {
int securityType = (Integer)((SpinnerOption)mSecurityTypeView.getSelectedItem()).value;
URI uri;