Пример #1
0
  @Override
  protected void dispatchDraw(Canvas canvas) {
    if (showcaseX < 0 || showcaseY < 0 || isRedundant) {
      super.dispatchDraw(canvas);
      return;
    }

    // Draw the semi-transparent background
    canvas.drawColor(backColor);

    // Draw to the scale specified
    Matrix mm = new Matrix();
    mm.postScale(scaleMultiplier, scaleMultiplier, showcaseX, showcaseY);
    canvas.setMatrix(mm);

    // Erase the area for the ring
    canvas.drawCircle(showcaseX, showcaseY, showcaseRadius, mEraser);

    boolean recalculateText = makeVoidedRect() || mAlteredText;
    mAlteredText = false;

    showcase.setBounds(voidedArea);
    showcase.draw(canvas);

    canvas.setMatrix(new Matrix());

    if (!TextUtils.isEmpty(mTitleText) || !TextUtils.isEmpty(mSubText)) {
      if (recalculateText)
        mBestTextPosition = getBestTextPosition(canvas.getWidth(), canvas.getHeight());

      if (!TextUtils.isEmpty(mTitleText)) {
        // TODO: use a dynamic detail layout
        canvas.drawText(mTitleText, mBestTextPosition[0], mBestTextPosition[1], mPaintTitle);
      }

      if (!TextUtils.isEmpty(mSubText)) {
        canvas.save();
        if (recalculateText)
          mDynamicDetailLayout =
              new DynamicLayout(
                  mSubText,
                  mPaintDetail,
                  ((Number) mBestTextPosition[2]).intValue(),
                  Layout.Alignment.ALIGN_NORMAL,
                  1.2f,
                  1.0f,
                  true);
        canvas.translate(mBestTextPosition[0], mBestTextPosition[1] + 12 * metricScale);
        mDynamicDetailLayout.draw(canvas);
        canvas.restore();
      }
    }

    super.dispatchDraw(canvas);
  }
  @Override
  protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final boolean ret;

    final Integer row = (Integer) child.getTag(R.id.tag_row);
    final Integer column = (Integer) child.getTag(R.id.tag_column);
    // row == null => Shadow view
    if (row == null || (row == -1 && column == -1)) {
      ret = super.drawChild(canvas, child, drawingTime);
    } else {
      canvas.save();
      if (row == -1) {
        canvas.clipRect(widths[0], 0, canvas.getWidth(), canvas.getHeight());
      } else if (column == -1) {
        canvas.clipRect(0, heights[0], canvas.getWidth(), canvas.getHeight());
      } else {
        canvas.clipRect(widths[0], heights[0], canvas.getWidth(), canvas.getHeight());
      }

      ret = super.drawChild(canvas, child, drawingTime);
      canvas.restore();
    }
    return ret;
  }