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Merge "Show tooltip when mouse is hovering over an ActionMenu item"

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This commit is contained in:
TreeHugger Robot
2016-05-16 19:44:30 +00:00
committed by Android (Google) Code Review
parent 4c01c3383e 1a6c27281b
commit aff5daf558
1 changed files with 39 additions and 5 deletions
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44
core/java/com/android/internal/view/menu/ActionMenuItemView.java
View File

@@ -28,7 +28,9 @@ import android.util.AttributeSet;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.widget.ActionMenuView;
import android.widget.ForwardingListener;
import android.widget.TextView;
@@ -57,6 +59,9 @@ public class ActionMenuItemView extends TextView
private static final int MAX_ICON_SIZE = 32; // dp
private int mMaxIconSize;
private Toast mTooltip;
private Runnable mShowTooltipRunnable = () -> showTooltip(Toast.LENGTH_LONG);
public ActionMenuItemView(Context context) {
this(context, null);
}
@@ -244,6 +249,7 @@ public class ActionMenuItemView extends TextView
@Override
public boolean dispatchHoverEvent(MotionEvent event) {
updateTooltip(event);
// Don't allow children to hover; we want this to be treated as a single component.
return onHoverEvent(event);
}
@@ -262,6 +268,10 @@ public class ActionMenuItemView extends TextView
@Override
public boolean onLongClick(View v) {
return showTooltip(Toast.LENGTH_SHORT);
}
private boolean showTooltip(@Toast.Duration int duration) {
if (hasText()) {
// Don't show the cheat sheet for items that already show text.
return false;
@@ -277,23 +287,47 @@ public class ActionMenuItemView extends TextView
final int height = getHeight();
final int midy = screenPos[1] + height / 2;
int referenceX = screenPos[0] + width / 2;
if (v.getLayoutDirection() == View.LAYOUT_DIRECTION_LTR) {
if (getLayoutDirection() == View.LAYOUT_DIRECTION_LTR) {
final int screenWidth = context.getResources().getDisplayMetrics().widthPixels;
referenceX = screenWidth - referenceX; // mirror
}
Toast cheatSheet = Toast.makeText(context, mItemData.getTitle(), Toast.LENGTH_SHORT);
hideTooltip ();
mTooltip = Toast.makeText(context, mItemData.getTitle(), duration);
if (midy < displayFrame.height()) {
// Show along the top; follow action buttons
cheatSheet.setGravity(Gravity.TOP | Gravity.END, referenceX,
mTooltip.setGravity(Gravity.TOP | Gravity.END, referenceX,
screenPos[1] + height - displayFrame.top);
} else {
// Show along the bottom center
cheatSheet.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);
mTooltip.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);
}
cheatSheet.show();
mTooltip.show();
return true;
}
private void hideTooltip() {
if (mTooltip != null) {
mTooltip.cancel();
mTooltip = null;
}
getHandler().removeCallbacks(mShowTooltipRunnable);
}
private void updateTooltip(MotionEvent event) {
AccessibilityManager manager = AccessibilityManager.getInstance(mContext);
if (manager.isEnabled() && manager.isTouchExplorationEnabled()) {
return;
}
final int action = event.getAction();
if (action == MotionEvent.ACTION_HOVER_MOVE) {
hideTooltip();
getHandler().postDelayed(mShowTooltipRunnable, ViewConfiguration.getLongPressTimeout());
} else if (action == MotionEvent.ACTION_HOVER_EXIT) {
hideTooltip();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final boolean textVisible = hasText();