src/com/android/browser/TitleBarBase.java

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.browser;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.PaintDrawable;
import android.view.Gravity;
import android.view.View;
import android.widget.AbsoluteLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;

/**
 * Base class for a title bar used by the browser.
 */
public class TitleBarBase extends LinearLayout {
    // These need to be set by the subclass.
    protected ImageView mFavicon;
    protected ImageView mLockIcon;

    protected Drawable mGenericFavicon;

    public TitleBarBase(Context context) {
        super(context, null);
        mGenericFavicon = context.getResources().getDrawable(
                R.drawable.app_web_browser_sm);
    }

    /* package */ void setProgress(int newProgress) {}
    /* package */ void setDisplayTitle(String title) {}

    /* package */ void setLock(Drawable d) {
        assert mLockIcon != null;
        if (null == d) {
            mLockIcon.setVisibility(View.GONE);
        } else {
            mLockIcon.setImageDrawable(d);
            mLockIcon.setVisibility(View.VISIBLE);
        }
    }

    /* package */ void setFavicon(Bitmap icon) {
        assert mFavicon != null;
        Drawable[] array = new Drawable[3];
        array[0] = new PaintDrawable(Color.BLACK);
        PaintDrawable p = new PaintDrawable(Color.WHITE);
        array[1] = p;
        if (icon == null) {
            array[2] = mGenericFavicon;
        } else {
            array[2] = new BitmapDrawable(icon);
        }
        LayerDrawable d = new LayerDrawable(array);
        d.setLayerInset(1, 1, 1, 1, 1);
        d.setLayerInset(2, 2, 2, 2, 2);
        mFavicon.setImageDrawable(d);
    }

    /* package */ void setInVoiceMode(boolean inVoiceMode) {}

    /* package */ void setIncognitoMode(boolean incognito) {}

    void setTitleGravity(int gravity) {
        int newTop = 0;
        if (gravity != Gravity.NO_GRAVITY) {
            View parent = (View) getParent();
            if (parent != null) {
                if (gravity == Gravity.TOP) {
                    newTop = parent.getScrollY();
                } else if (gravity == Gravity.BOTTOM) {
                    newTop = parent.getScrollY() + parent.getHeight() - getHeight();
                }
            }
        }
        AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) getLayoutParams();
        if (lp != null) {
            lp.y = newTop;
            setLayoutParams(lp);
        }
    }

}