Android Open Source - QCircle-Design-Template Q Circle Title

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QCircle Design Template Library Project Contributor License Agreement By making a contribution to this QCircle Design Template Library Project (??Project??), I accept and agree to the following term...

Java Source Code

package com.lge.qcircle.template;
//from w  ww.  j  a v a  2s. co  m
import android.content.Context;
import android.graphics.Color;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * The {@code QCircleTitle} class represents title views of QuickCircle.
 *
 * @author jeongeun.jeon
 */
public final class QCircleTitle {
  private final String TAG = "QCircleTitle";
  protected Context mContext = null;

  protected LinearLayout mRootView = null;
  protected TextView mTitleView = null;

  /**
   * creates a title bar with a text.
   * <p>
   * It makes a {@link android.widget.TextView} with the given text.
   *
   * @param title   title text for the title. <br>
   *                If it is null, no title text will be shown but the title bar will occupy some
   *                space.
   * @param context {@code Activity} which has a circle view.<br>
   *                If it is null, you might get errors when you use method of this class.
   */
  public QCircleTitle(Context context, String title) {
    this(context, title, Color.BLACK, Color.TRANSPARENT);
  }

  /**
   * creates a title bar with a text.
   * <p>
   * It makes a {@link android.widget.TextView} with the given text.
   *
   * @param title           title text for the title. <br>
   *                        If it is null, no title text will be shown but the title bar will occupy some
   *                        space.
   * @param context         {@code Activity} which has a circle view.<br>
   *                        If it is null, you might get errors when you use method of this class.
   * @param titleTextColor  The color of the title
   * @param backgroundColor The background color of the title
   */
  public QCircleTitle(Context context, String title, int titleTextColor, int backgroundColor) {
    this(context, createTextView(context, title, titleTextColor), backgroundColor);
  }

  /**
   * creates a title bar with the given View.
   *
   * @param context {@code Activity} which has a circle view.<br>
   *                If it is null, you might get errors when you use method of this class.
   * @param title   View for the title bar.<br>
   *                If it is null, a empty title bar will be created.
   */
  public QCircleTitle(Context context, View title) {
    this(context, title, Color.TRANSPARENT);
  }

  /**
   * creates a title bar with the given View.
   *
   * @param context         {@code Activity} which has a circle view.<br>
   *                        If it is null, you might get errors when you use method of this class.
   * @param title           View for the title bar.<br>
   *                        If it is null, a empty title bar will be created.
   * @param backgroundColor The background color of the title
   */
  public QCircleTitle(Context context, View title, int backgroundColor) {
    if (context != null) {
      mContext = context;
      mRootView = createRootView(context, backgroundColor);
      if (title != null) {
        if (title instanceof TextView) mTitleView = (TextView) title;
        mRootView.addView(title);
      }
    } else {
      Log.e(TAG, "Cannot create a title view. context is null");
    }
  }

  /**
   * gets the ID of the title view.
   *
   * @return ID of the title view
   */
  public int getId() {
    return R.id.title;
  }

  /**
   * gets the view of the title.
   *
   * @return root of the title view
   */
  public View getView() {
    return mRootView;
  }

  /**
   * sets the view of the title.
   *
   * @param view View for title
   * @return true if the title view is added successfully or<br>
   * false otherwise.
   */
  public boolean setView(View view) {
    boolean result = false;
    if (view != null && mRootView != null) {
      mRootView.removeAllViews();
      mRootView.addView(view);
      result = true;
    }
    return result;
  }

  /**
   * sets the text of the title view.
   *
   * @param title title text for the title. <br>
   *              If it is null, no title text will be shown but the title bar will occupy some
   *              space.
   */
  public void setTitle(String title) {
    if (mRootView != null && mTitleView != null)
      mTitleView.setText(title);
    else if (mRootView != null) {
      mRootView.removeAllViews();
      mRootView.addView(createTextView(mContext, title));
    }
  }

  /**
   * sets the font size of the title text.
   *
   * @param size font size in pixel. <br>
   *             If it is less or equal to 0, the font size will not change.
   */
  public void setTextSize(float size) {
    if (mTitleView != null && size > 0) {
      mTitleView.setTextSize(size);
    }
  }

  /**
   * create a root layout.
   * <p>
   * The root layout will include all of contents for a title bar.
   *
   * @param context Activity which has this title bar
   * @return root layout with align of horizontal-center
   */
  private LinearLayout createRootView(Context context) {
    return createRootView(context, Color.TRANSPARENT);
  }

  /**
   * create a root layout.
   * <p>
   * The root layout will include all of contents for a title bar.
   *
   * @param context         Activity which has this title bar
   * @param backgroundColor The background color of the title
   * @return root layout with align of horizontal-center
   */
  private LinearLayout createRootView(Context context, int backgroundColor) {
    LinearLayout root = new LinearLayout(context);
    root.setId(R.id.title);
    root.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER);
    root.setBackgroundColor(backgroundColor);
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT,
        LayoutParams.MATCH_PARENT);
    params.gravity = Gravity.CENTER_HORIZONTAL;
    root.setLayoutParams(params);
    return root;
  }

  /**
   * create a TextView.
   *
   * @param context Activity which has this title bar
   * @param title   title text
   * @return TextView with the given text
   */
  private static TextView createTextView(Context context, String title) {
    return createTextView(context, title, Color.BLACK);
  }

  /**
   * create a TextView.
   *
   * @param context   Activity which has this title bar
   * @param title     title text
   * @param textColor the color of the text
   * @return TextView with the given text
   */
  private static TextView createTextView(Context context, String title, int textColor) {
    TextView text = new TextView(context);
    text.setText(title);
    text.setBackgroundColor(Color.TRANSPARENT);
    text.setTextColor(textColor);
    text.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER);
    text.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
    return text;
  }
}

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