com.google.android.exoplayer2.text.CaptionStyleCompat Java Examples

@Override
protected void init(Context context) {
    super.init(context);
    mSubtitleView = findViewById(R.id.sub_title_view);


    mSubtitleView.setStyle(new CaptionStyleCompat(Color.BLACK, Color.TRANSPARENT, Color.TRANSPARENT, CaptionStyleCompat.EDGE_TYPE_NONE, CaptionStyleCompat.EDGE_TYPE_NONE, null));
    mSubtitleView.setFixedTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
}
 

public SubtitleView(Context context, AttributeSet attrs) {
  super(context, attrs);
  painters = new ArrayList<>();
  textSizeType = FRACTIONAL;
  textSize = DEFAULT_TEXT_SIZE_FRACTION;
  applyEmbeddedStyles = true;
  style = CaptionStyleCompat.DEFAULT;
  bottomPaddingFraction = DEFAULT_BOTTOM_PADDING_FRACTION;
}
 

/**
 * Sets the caption style.
 *
 * @param style A style for the view.
 */
public void setStyle(CaptionStyleCompat style) {
  if (this.style == style) {
    return;
  }
  this.style = style;
  // Invalidate to trigger drawing.
  invalidate();
}
 

@SuppressWarnings("PMD.NPathComplexity")  // TODO break this method up
private void drawTextLayout(Canvas canvas) {
    StaticLayout layout = textLayout;
    if (layout == null) {
        // Nothing to draw.
        return;
    }

    int saveCount = canvas.save();
    canvas.translate(textLeft, textTop);

    if (Color.alpha(windowColor) > 0) {
        paint.setColor(windowColor);
        canvas.drawRect(-textPaddingX, 0, layout.getWidth() + textPaddingX, layout.getHeight(),
                paint);
    }

    if (Color.alpha(backgroundColor) > 0) {
        paint.setColor(backgroundColor);
        float previousBottom = layout.getLineTop(0);
        int lineCount = layout.getLineCount();
        for (int i = 0; i < lineCount; i++) {
            lineBounds.left = layout.getLineLeft(i) - textPaddingX;
            lineBounds.right = layout.getLineRight(i) + textPaddingX;
            lineBounds.top = previousBottom;
            lineBounds.bottom = layout.getLineBottom(i);
            previousBottom = lineBounds.bottom;
            canvas.drawRoundRect(lineBounds, cornerRadius, cornerRadius, paint);
        }
    }

    if (edgeType == CaptionStyleCompat.EDGE_TYPE_OUTLINE) {
        textPaint.setStrokeJoin(Join.ROUND);
        textPaint.setStrokeWidth(outlineWidth);
        textPaint.setColor(edgeColor);
        textPaint.setStyle(Style.FILL_AND_STROKE);
        layout.draw(canvas);
    } else if (edgeType == CaptionStyleCompat.EDGE_TYPE_DROP_SHADOW) {
        textPaint.setShadowLayer(shadowRadius, shadowOffset, shadowOffset, edgeColor);
    } else if (edgeType == CaptionStyleCompat.EDGE_TYPE_RAISED
            || edgeType == CaptionStyleCompat.EDGE_TYPE_DEPRESSED) {
        boolean raised = edgeType == CaptionStyleCompat.EDGE_TYPE_RAISED;
        int colorUp = raised ? Color.WHITE : edgeColor;
        int colorDown = raised ? edgeColor : Color.WHITE;
        float offset = shadowRadius / 2;
        textPaint.setColor(foregroundColor);
        textPaint.setStyle(Style.FILL);
        textPaint.setShadowLayer(shadowRadius, -offset, -offset, colorUp);
        layout.draw(canvas);
        textPaint.setShadowLayer(shadowRadius, offset, offset, colorDown);
    }

    textPaint.setColor(foregroundColor);
    textPaint.setStyle(Style.FILL);
    layout.draw(canvas);
    textPaint.setShadowLayer(0, 0, 0, 0);

    canvas.restoreToCount(saveCount);
}
 

/**
 * Draws the provided {@link Cue} into a canvas with the specified styling.
 * <p>
 * A call to this method is able to use cached results of calculations made during the previous
 * call, and so an instance of this class is able to optimize repeated calls to this method in
 * which the same parameters are passed.
 *
 * @param cue The cue to draw.
 * @param applyEmbeddedStyles Whether styling embedded within the cue should be applied.
 * @param style The style to use when drawing the cue text.
 * @param textSizePx The text size to use when drawing the cue text, in pixels.
 * @param bottomPaddingFraction The bottom padding fraction to apply when {@link Cue#line} is
 *     {@link Cue#DIMEN_UNSET}, as a fraction of the viewport height
 * @param canvas The canvas into which to draw.
 * @param cueBoxLeft The left position of the enclosing cue box.
 * @param cueBoxTop The top position of the enclosing cue box.
 * @param cueBoxRight The right position of the enclosing cue box.
 * @param cueBoxBottom The bottom position of the enclosing cue box.
 */
public void draw(Cue cue, boolean applyEmbeddedStyles, CaptionStyleCompat style, float textSizePx,
    float bottomPaddingFraction, Canvas canvas, int cueBoxLeft, int cueBoxTop, int cueBoxRight,
    int cueBoxBottom) {
  boolean isTextCue = cue.bitmap == null;
  CharSequence cueText = null;
  Bitmap cueBitmap = null;
  int windowColor = Color.BLACK;
  if (isTextCue) {
    cueText = cue.text;
    if (TextUtils.isEmpty(cueText)) {
      // Nothing to draw.
      return;
    }
    windowColor = cue.windowColorSet ? cue.windowColor : style.windowColor;
    if (!applyEmbeddedStyles) {
      // Strip out any embedded styling.
      cueText = cueText.toString();
      windowColor = style.windowColor;
    }
  } else {
    cueBitmap = cue.bitmap;
  }
  if (areCharSequencesEqual(this.cueText, cueText)
      && Util.areEqual(this.cueTextAlignment, cue.textAlignment)
      && this.cueBitmap == cueBitmap
      && this.cueLine == cue.line
      && this.cueLineType == cue.lineType
      && Util.areEqual(this.cueLineAnchor, cue.lineAnchor)
      && this.cuePosition == cue.position
      && Util.areEqual(this.cuePositionAnchor, cue.positionAnchor)
      && this.cueSize == cue.size
      && this.applyEmbeddedStyles == applyEmbeddedStyles
      && this.foregroundColor == style.foregroundColor
      && this.backgroundColor == style.backgroundColor
      && this.windowColor == windowColor
      && this.edgeType == style.edgeType
      && this.edgeColor == style.edgeColor
      && Util.areEqual(this.textPaint.getTypeface(), style.typeface)
      && this.textSizePx == textSizePx
      && this.bottomPaddingFraction == bottomPaddingFraction
      && this.parentLeft == cueBoxLeft
      && this.parentTop == cueBoxTop
      && this.parentRight == cueBoxRight
      && this.parentBottom == cueBoxBottom) {
    // We can use the cached layout.
    drawLayout(canvas, isTextCue);
    return;
  }

  this.cueText = cueText;
  this.cueTextAlignment = cue.textAlignment;
  this.cueBitmap = cueBitmap;
  this.cueLine = cue.line;
  this.cueLineType = cue.lineType;
  this.cueLineAnchor = cue.lineAnchor;
  this.cuePosition = cue.position;
  this.cuePositionAnchor = cue.positionAnchor;
  this.cueSize = cue.size;
  this.applyEmbeddedStyles = applyEmbeddedStyles;
  this.foregroundColor = style.foregroundColor;
  this.backgroundColor = style.backgroundColor;
  this.windowColor = windowColor;
  this.edgeType = style.edgeType;
  this.edgeColor = style.edgeColor;
  this.textPaint.setTypeface(style.typeface);
  this.textSizePx = textSizePx;
  this.bottomPaddingFraction = bottomPaddingFraction;
  this.parentLeft = cueBoxLeft;
  this.parentTop = cueBoxTop;
  this.parentRight = cueBoxRight;
  this.parentBottom = cueBoxBottom;

  if (isTextCue) {
    setupTextLayout();
  } else {
    setupBitmapLayout();
  }
  drawLayout(canvas, isTextCue);
}
 

private void drawTextLayout(Canvas canvas) {
  StaticLayout layout = textLayout;
  if (layout == null) {
    // Nothing to draw.
    return;
  }

  int saveCount = canvas.save();
  canvas.translate(textLeft, textTop);

  if (Color.alpha(windowColor) > 0) {
    paint.setColor(windowColor);
    canvas.drawRect(-textPaddingX, 0, layout.getWidth() + textPaddingX, layout.getHeight(),
        paint);
  }

  if (Color.alpha(backgroundColor) > 0) {
    paint.setColor(backgroundColor);
    float previousBottom = layout.getLineTop(0);
    int lineCount = layout.getLineCount();
    for (int i = 0; i < lineCount; i++) {
      lineBounds.left = layout.getLineLeft(i) - textPaddingX;
      lineBounds.right = layout.getLineRight(i) + textPaddingX;
      lineBounds.top = previousBottom;
      lineBounds.bottom = layout.getLineBottom(i);
      previousBottom = lineBounds.bottom;
      canvas.drawRoundRect(lineBounds, cornerRadius, cornerRadius, paint);
    }
  }

  if (edgeType == CaptionStyleCompat.EDGE_TYPE_OUTLINE) {
    textPaint.setStrokeJoin(Join.ROUND);
    textPaint.setStrokeWidth(outlineWidth);
    textPaint.setColor(edgeColor);
    textPaint.setStyle(Style.FILL_AND_STROKE);
    layout.draw(canvas);
  } else if (edgeType == CaptionStyleCompat.EDGE_TYPE_DROP_SHADOW) {
    textPaint.setShadowLayer(shadowRadius, shadowOffset, shadowOffset, edgeColor);
  } else if (edgeType == CaptionStyleCompat.EDGE_TYPE_RAISED
      || edgeType == CaptionStyleCompat.EDGE_TYPE_DEPRESSED) {
    boolean raised = edgeType == CaptionStyleCompat.EDGE_TYPE_RAISED;
    int colorUp = raised ? Color.WHITE : edgeColor;
    int colorDown = raised ? edgeColor : Color.WHITE;
    float offset = shadowRadius / 2f;
    textPaint.setColor(foregroundColor);
    textPaint.setStyle(Style.FILL);
    textPaint.setShadowLayer(shadowRadius, -offset, -offset, colorUp);
    layout.draw(canvas);
    textPaint.setShadowLayer(shadowRadius, offset, offset, colorDown);
  }

  textPaint.setColor(foregroundColor);
  textPaint.setStyle(Style.FILL);
  layout.draw(canvas);
  textPaint.setShadowLayer(0, 0, 0, 0);

  canvas.restoreToCount(saveCount);
}
 

/**
 * Sets the caption style to be equivalent to the one returned by
 * {@link CaptioningManager#getUserStyle()}, or to a default style before API level 19.
 */
public void setUserDefaultStyle() {
  setStyle(Util.SDK_INT >= 19 && !isInEditMode()
      ? getUserCaptionStyleV19() : CaptionStyleCompat.DEFAULT);
}
 

@TargetApi(19)
private CaptionStyleCompat getUserCaptionStyleV19() {
  CaptioningManager captioningManager =
      (CaptioningManager) getContext().getSystemService(Context.CAPTIONING_SERVICE);
  return CaptionStyleCompat.createFromCaptionStyle(captioningManager.getUserStyle());
}
 

void setInterBackground(CaptionStyleCompat compat);