Android Open Source - android-rss Channel Head

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * $Id: ChannelHead.java 114 2008-02-14 05:09:23Z jasta00 $
 */*from  w w w .j a  v a 2s .c  om*/
 * Copyright (C) 2007 Josh Guilfoyle <jasta@devtcg.org>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

package org.devtcg.rssreader.view;

import java.net.URISyntaxException;
import java.util.Map;

import org.devtcg.rssreader.provider.RSSReader;

import android.content.Context;
import android.database.Cursor;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.net.Uri;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * Simple widget that draws the channel heading for PostView and PostList.
 * Currently only shows the site icon and the channel name, but could one day
 * be extended to show the site logo or other information.
 */
public class ChannelHead extends LinearLayout
{
  private ImageView mLogo;
  private ImageView mIcon;
  private TextView mLogoText;

  private Rect mRect;
  private Paint mGray;
  private Paint mBlack1;
  private Paint mBlack2;
  
  /* Default padding for each widget. */
  private static final int paddingTop = 2;
  private static final int paddingBottom = 6;

  public ChannelHead(Context context)
  {
    super(context);
    init(context);
  }

  public ChannelHead(Context context, AttributeSet attrs, Map inflateParams)
  {
    super(context, attrs, inflateParams);
    init(context);
  }

  private void init(Context context)
  {
    mRect = new Rect();
    mGray = new Paint();    
    mGray.setStyle(Paint.Style.STROKE);
    mGray.setColor(0xff9c9e9c);

    mBlack1 = new Paint();    
    mBlack1.setStyle(Paint.Style.STROKE);
    mBlack1.setColor(0xbb000000);

    mBlack2 = new Paint();    
    mBlack2.setStyle(Paint.Style.STROKE);
    mBlack2.setColor(0x33000000);
  }

  @Override
  protected void dispatchDraw(Canvas canvas)
  {
    Rect r = mRect;

    getDrawingRect(r);
    canvas.drawLine(r.left, r.bottom - 4, r.right, r.bottom - 4, mGray);
    canvas.drawLine(r.left, r.bottom - 3, r.right, r.bottom - 3, mGray);
    canvas.drawLine(r.left, r.bottom - 2, r.right, r.bottom - 2, mBlack1);
    canvas.drawLine(r.left, r.bottom - 1, r.right, r.bottom - 1, mBlack2);

    super.dispatchDraw(canvas);
  }

  /**
   * Set channel data for display.
   *
   * @see #setLogo(Cursor)
   */
  public void setLogo(String channelName, String iconData, String logoData)
  {
    /* TODO */
    assert(logoData == null);
    
    if (mIcon == null)
    {
      mIcon = new ImageView(getContext());
      mIcon.setPadding(10, paddingTop, 0, paddingBottom);
      
      LayoutParams iconRules =
        new LayoutParams(16 + 10, 16 + paddingTop + paddingBottom);
      
      iconRules.gravity = Gravity.CENTER_VERTICAL;
      
      addView(mIcon, iconRules);
    }

    if (iconData != null)
    {
      mIcon.setImageURI(Uri.parse(iconData));
    }
    
    if (mLogoText == null)
    {
      mLogoText = new TextView(getContext());
      mLogoText.setPadding(6, paddingTop, 0, paddingBottom);
      mLogoText.setTypeface(Typeface.DEFAULT_BOLD);
      mLogoText.setMaxLines(1);
      addView(mLogoText, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));      
    }

    mLogoText.setText(channelName);
  }
  
  /**
   * Convenience method to access the logo data from a Channel cursor.
   */
  public void setLogo(Cursor cursor)
  {
    setLogo(cursor.getString(cursor.getColumnIndex(RSSReader.Channels.TITLE)),
      cursor.getString(cursor.getColumnIndex(RSSReader.Channels.ICON)),
      cursor.getString(cursor.getColumnIndex(RSSReader.Channels.LOGO)));
  }
}

Java Source Code List

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