diff options
Diffstat (limited to 'core/java/android/widget/TabWidget.java')
| -rw-r--r-- | core/java/android/widget/TabWidget.java | 117 |
1 files changed, 75 insertions, 42 deletions
diff --git a/core/java/android/widget/TabWidget.java b/core/java/android/widget/TabWidget.java index 47f5c6c..2ba6268 100644 --- a/core/java/android/widget/TabWidget.java +++ b/core/java/android/widget/TabWidget.java @@ -16,11 +16,15 @@ package android.widget; +import com.android.internal.R; + import android.content.Context; +import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.Rect; import android.graphics.drawable.Drawable; +import android.os.Build; import android.util.AttributeSet; import android.util.Log; import android.view.View; @@ -30,7 +34,7 @@ import android.view.View.OnFocusChangeListener; /** - * + * * Displays a list of tab labels representing each page in the parent's tab * collection. The container object for this widget is * {@link android.widget.TabHost TabHost}. When the user selects a tab, this @@ -64,25 +68,54 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { super(context, attrs); initTabWidget(); - TypedArray a = + TypedArray a = context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.TabWidget, defStyle, 0); a.recycle(); } - + @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { mStripMoved = true; super.onSizeChanged(w, h, oldw, oldh); } + @Override + protected int getChildDrawingOrder(int childCount, int i) { + // Always draw the selected tab last, so that drop shadows are drawn + // in the correct z-order. + if (i == childCount - 1) { + return mSelectedTab; + } else if (i >= mSelectedTab) { + return i + 1; + } else { + return i; + } + } + private void initTabWidget() { setOrientation(LinearLayout.HORIZONTAL); - mBottomLeftStrip = mContext.getResources().getDrawable( - com.android.internal.R.drawable.tab_bottom_left); - mBottomRightStrip = mContext.getResources().getDrawable( - com.android.internal.R.drawable.tab_bottom_right); + mGroupFlags |= FLAG_USE_CHILD_DRAWING_ORDER; + + final Context context = mContext; + final Resources resources = context.getResources(); + + if (context.getApplicationInfo().targetSdkVersion <= Build.VERSION_CODES.DONUT) { + // Donut apps get old color scheme + mBottomLeftStrip = resources.getDrawable( + com.android.internal.R.drawable.tab_bottom_left_v4); + mBottomRightStrip = resources.getDrawable( + com.android.internal.R.drawable.tab_bottom_right_v4); + } else { + // Use modern color scheme for Eclair and beyond + mBottomLeftStrip = resources.getDrawable( + com.android.internal.R.drawable.tab_bottom_left); + mBottomRightStrip = resources.getDrawable( + com.android.internal.R.drawable.tab_bottom_right); + } + + // Deal with focus, as we don't want the focus to go by default // to a tab other than the current tab setFocusable(true); @@ -156,7 +189,7 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { } super.childDrawableStateChanged(child); } - + @Override public void dispatchDraw(Canvas canvas) { super.dispatchDraw(canvas); @@ -169,17 +202,17 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { } View selectedChild = getChildTabViewAt(mSelectedTab); - + mBottomLeftStrip.setState(selectedChild.getDrawableState()); mBottomRightStrip.setState(selectedChild.getDrawableState()); - + if (mStripMoved) { Rect selBounds = new Rect(); // Bounds of the selected tab indicator selBounds.left = selectedChild.getLeft(); selBounds.right = selectedChild.getRight(); final int myHeight = getHeight(); mBottomLeftStrip.setBounds( - Math.min(0, selBounds.left + Math.min(0, selBounds.left - mBottomLeftStrip.getIntrinsicWidth()), myHeight - mBottomLeftStrip.getIntrinsicHeight(), selBounds.left, @@ -187,12 +220,12 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { mBottomRightStrip.setBounds( selBounds.right, myHeight - mBottomRightStrip.getIntrinsicHeight(), - Math.max(getWidth(), + Math.max(getWidth(), selBounds.right + mBottomRightStrip.getIntrinsicWidth()), myHeight); mStripMoved = false; } - + mBottomLeftStrip.draw(canvas); mBottomRightStrip.draw(canvas); } @@ -202,26 +235,26 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { * This method is used to bring a tab to the front of the Widget, * and is used to post to the rest of the UI that a different tab * has been brought to the foreground. - * - * Note, this is separate from the traditional "focus" that is - * employed from the view logic. - * - * For instance, if we have a list in a tabbed view, a user may be - * navigating up and down the list, moving the UI focus (orange - * highlighting) through the list items. The cursor movement does - * not effect the "selected" tab though, because what is being - * scrolled through is all on the same tab. The selected tab only - * changes when we navigate between tabs (moving from the list view + * + * Note, this is separate from the traditional "focus" that is + * employed from the view logic. + * + * For instance, if we have a list in a tabbed view, a user may be + * navigating up and down the list, moving the UI focus (orange + * highlighting) through the list items. The cursor movement does + * not effect the "selected" tab though, because what is being + * scrolled through is all on the same tab. The selected tab only + * changes when we navigate between tabs (moving from the list view * to the next tabbed view, in this example). - * + * * To move both the focus AND the selected tab at once, please use - * {@link #setCurrentTab}. Normally, the view logic takes care of - * adjusting the focus, so unless you're circumventing the UI, + * {@link #setCurrentTab}. Normally, the view logic takes care of + * adjusting the focus, so unless you're circumventing the UI, * you'll probably just focus your interest here. - * + * * @param index The tab that you want to indicate as the selected * tab (tab brought to the front of the widget) - * + * * @see #focusCurrentTab */ public void setCurrentTab(int index) { @@ -234,19 +267,19 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { getChildTabViewAt(mSelectedTab).setSelected(true); mStripMoved = true; } - + /** * Sets the current tab and focuses the UI on it. - * This method makes sure that the focused tab matches the selected - * tab, normally at {@link #setCurrentTab}. Normally this would not - * be an issue if we go through the UI, since the UI is responsible - * for calling TabWidget.onFocusChanged(), but in the case where we - * are selecting the tab programmatically, we'll need to make sure + * This method makes sure that the focused tab matches the selected + * tab, normally at {@link #setCurrentTab}. Normally this would not + * be an issue if we go through the UI, since the UI is responsible + * for calling TabWidget.onFocusChanged(), but in the case where we + * are selecting the tab programmatically, we'll need to make sure * focus keeps up. - * - * @param index The tab that you want focused (highlighted in orange) + * + * @param index The tab that you want focused (highlighted in orange) * and selected (tab brought to the front of the widget) - * + * * @see #setCurrentTab */ public void focusCurrentTab(int index) { @@ -254,18 +287,18 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { // set the tab setCurrentTab(index); - + // change the focus if applicable. if (oldTab != index) { getChildTabViewAt(index).requestFocus(); } } - + @Override public void setEnabled(boolean enabled) { super.setEnabled(enabled); int count = getTabCount(); - + for (int i = 0; i < count; i++) { View child = getChildTabViewAt(i); child.setEnabled(enabled); @@ -318,7 +351,7 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { getChildTabViewAt(mSelectedTab).requestFocus(); return; } - + if (hasFocus) { int i = 0; int numTabs = getTabCount(); @@ -354,7 +387,7 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener { /** * Informs the TabHost which tab was selected. It also indicates * if the tab was clicked/pressed or just focused into. - * + * * @param tabIndex index of the tab that was selected * @param clicked whether the selection changed due to a touch/click * or due to focus entering the tab through navigation. Pass true |