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Add suuport for splitting touch events across windows.

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This feature is currently used to enable dragging the start and end
selection handles of a TextView at the same time.  Could be used for
other things later.

Deleted some dead code in ArrowKeyMovementMethod and CursorControllers.

Change-Id: I930accd97ca1ca1917aab8a807db2c950fc7b409
This commit is contained in:
Jeff Brown
2010-09-26 22:20:12 -07:00
parent 37cedce14b
commit 01ce2e9eee
11 changed files with 718 additions and 492 deletions
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61
core/java/android/text/method/ArrowKeyMovementMethod.java
View File

@@ -23,19 +23,12 @@ import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
import android.widget.TextView.CursorController;
// XXX this doesn't extend MetaKeyKeyListener because the signatures
// don't match. Need to figure that out. Meanwhile the meta keys
// won't work in fields that don't take input.
public class ArrowKeyMovementMethod implements MovementMethod {
/**
* An optional controller for the cursor.
* Use {@link #setCursorController(CursorController)} to set this field.
*/
private CursorController mCursorController;
private boolean isCap(Spannable buffer) {
return ((MetaKeyKeyListener.getMetaState(buffer, KeyEvent.META_SHIFT_ON) == 1) ||
(MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0));
@@ -192,21 +185,10 @@ public class ArrowKeyMovementMethod implements MovementMethod {
}
public boolean onTrackballEvent(TextView widget, Spannable text, MotionEvent event) {
if (mCursorController != null) {
mCursorController.hide();
}
return false;
}
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
if (mCursorController != null) {
return onTouchEventCursor(widget, buffer, event);
} else {
return onTouchEventStandard(widget, buffer, event);
}
}
private boolean onTouchEventStandard(TextView widget, Spannable buffer, MotionEvent event) {
int initialScrollX = -1, initialScrollY = -1;
if (event.getAction() == MotionEvent.ACTION_UP) {
initialScrollX = Touch.getInitialScrollX(widget, buffer);
@@ -278,49 +260,6 @@ public class ArrowKeyMovementMethod implements MovementMethod {
return handled;
}
private boolean onTouchEventCursor(TextView widget, Spannable buffer, MotionEvent event) {
if (widget.isFocused() && !widget.didTouchFocusSelect()) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_MOVE:
widget.cancelLongPress();
// Offset the current touch position (from controller to cursor)
final float x = event.getX() + mCursorController.getOffsetX();
final float y = event.getY() + mCursorController.getOffsetY();
mCursorController.updatePosition((int) x, (int) y);
return true;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
mCursorController = null;
return true;
}
}
return false;
}
/**
* Defines the cursor controller.
*
* When set, this object can be used to handle touch events, that can be translated into cursor
* updates.
*
* {@link MotionEvent#ACTION_MOVE} events will call back the
* {@link CursorController#updatePosition(int, int)} controller's method, passing the current
* finger coordinates (offset by {@link CursorController#getOffsetX()} and
* {@link CursorController#getOffsetY()}) as parameters.
*
* When the gesture is finished (on a {@link MotionEvent#ACTION_UP} or
* {@link MotionEvent#ACTION_CANCEL} event), the controller is reset to null.
*
* @param cursorController A cursor controller implementation
*
* @hide
*/
public void setCursorController(CursorController cursorController) {
mCursorController = cursorController;
}
public boolean canSelectArbitrarily() {
return true;
}