Example #1
0
 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
   // OnLayout.changed isn't a reliable measure of whether or not the size of this view has changed
   // neither is onSizeChanged called often enough. Instead, we track changes in size ourselves,
   // and
   // only invalidate this matrix if we have a new width/height spec
   if (widthMeasureSpec != mWidthSpec || heightMeasureSpec != mHeightSpec) {
     mWidthSpec = widthMeasureSpec;
     mHeightSpec = heightMeasureSpec;
     mLayoutChanged = true;
   }
   super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 }
Example #2
0
  @Override
  public void setImageDrawable(Drawable drawable) {
    if (drawable == null) {
      drawable = ContextCompat.getDrawable(getContext(), R.drawable.tab_panel_tab_background);
      setScaleType(ScaleType.FIT_XY);
      mScale = false;
    } else {
      mScale = true;
      setScaleType(ScaleType.FIT_CENTER);
    }

    super.setImageDrawable(drawable);
  }
Example #3
0
  @Override
  public void onDraw(Canvas canvas) {
    if (!mScale) {
      super.onDraw(canvas);
      return;
    }

    Drawable d = getDrawable();
    if (mLayoutChanged) {
      int w1 = d.getIntrinsicWidth();
      int h1 = d.getIntrinsicHeight();
      int w2 = getWidth();
      int h2 = getHeight();

      float scale = (w2 / h2 < w1 / h1) ? (float) h2 / h1 : (float) w2 / w1;
      mMatrix.setScale(scale, scale);
    }

    int saveCount = canvas.save();
    canvas.concat(mMatrix);
    d.draw(canvas);
    canvas.restoreToCount(saveCount);
  }