Android Open Source - RTextView R Text View

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License

The source code is released under:

MIT License

Java Source Code

package com.rmsc.rtextview;
/* www. j a  va  2  s  .com*/
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.TextView;

/**
 * Custom textview to support custom fonts.
 * Developed to support the usage of fonts as icons.
 * @author ruicouto
 *
 */
public class RTextView extends TextView {
  
  private TypedArray mStyledAttributes;
  private String mFontName;
  private String mPlaceholder;
  private Rect mTempBounds;
  private Typeface mTypeface;
  private int activeColor;
  private int baseColor;
  
  
  /**
   * Default constructor.
   * @param context
   */
  public RTextView(Context context) {
    super(context);
    init(context,null);
  }
  
  /**
   * Constructor with attribute set.
   * @param context
   * @param attrs
   */
  public RTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(context,attrs);
  }
  
  /**
   * Constructor with attribute set and def style.
   * @param context
   * @param attrs
   * @param defStyle
   */
  public RTextView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init(context,attrs);
  }
  
  /**
   * Common method to initialize data.
   * @param context
   * @param attrs
   */
  private void init(Context context, AttributeSet attrs) {
    mTempBounds = new Rect();
    mTypeface = Typeface.DEFAULT;
    if(attrs!=null) {
      mStyledAttributes = context.getTheme().obtainStyledAttributes(attrs,R.styleable.RTextView,0, 0);
      mFontName = mStyledAttributes.getString(R.styleable.RTextView_typeface);
      mPlaceholder = mStyledAttributes.getString(R.styleable.RTextView_placeholder);
      String c = mStyledAttributes.getString(R.styleable.RTextView_activecolor);
      if(c!=null) {
        activeColor = Color.parseColor(c);
      } else {
        activeColor = -1;
      }
      baseColor = getCurrentTextColor();
      
      try {
        mTypeface = Typeface.createFromAsset(getContext().getAssets(), "fonts/"+mFontName+".ttf");  
      } catch(Exception e) {
        Log.e("RTextView", "Unable to load font '" + mFontName + ".ttf'.\nDo the file 'assets/fonts/"+mFontName+".ttf' exists?");
      }
      
    }
  }
  
  @Override
  public boolean onTouchEvent(MotionEvent event) {
    if(event.getAction() == MotionEvent.ACTION_DOWN) {
      if(activeColor!=-1) {
        setTextColor(activeColor);
        invalidate();
      }
    }
    if(event.getAction() == MotionEvent.ACTION_UP) {
      if(activeColor!=-1) {
        setTextColor(baseColor);
        invalidate();
      }
      return performClick();
    }
    return super.onTouchEvent(event);
  }
  
  @Override
  public boolean performClick() {
    return super.performClick();
  }
  
  /**
   * Override of the onDraw method.
   */
  @Override
  protected void onDraw(Canvas canvas) {
    if(mFontName!=null && !mFontName.equals("")) {
      if(isInEditMode()) {
        if(mPlaceholder!=null && !mPlaceholder.equals("")) {
          setText(mPlaceholder);
        } else {
          Log.i("RTextView", "No placeholder was given. Using default char 'x'.");
          setText("x");
        }
      }
    }
    setTypeface(mTypeface);
    super.onDraw(canvas);
  }

  /**
   * Adjust size for editing mode.
   */
  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    if(!isInEditMode() || mPlaceholder==null) {
      super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    } else {
      getPaint().getTextBounds(mPlaceholder,0,mPlaceholder.length(),mTempBounds);
      int height = mTempBounds.height();
      int width = mTempBounds.width();
      setMeasuredDimension((int)width, (int)height);      
    }    
  }
  

}

Java Source Code List

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