/** * Returns height of wheel item. * * @return the item height */ private int getItemHeight() { if (itemHeight != 0) { return itemHeight; } else if (itemsLayout != null && itemsLayout.getLineCount() > 2) { itemHeight = itemsLayout.getLineTop(2) - itemsLayout.getLineTop(1); return itemHeight; } return getHeight() / visibleItems; }
/** * Draws items. * * @param canvas the canvas for drawing */ private void drawItems(Canvas canvas) { canvas.save(); int top = itemsLayout.getLineTop(1); canvas.translate(0, -top + scrollingOffset); itemsPaint.setColor(ITEMS_TEXT_COLOR); itemsPaint.drawableState = getDrawableState(); itemsLayout.draw(canvas); canvas.restore(); }
public List<Integer> getPageOffsets(CharSequence text, boolean includePageNumbers) { if (text == null) { return new ArrayList<Integer>(); } List<Integer> pageOffsets = new ArrayList<Integer>(); TextPaint textPaint = bookView.getInnerView().getPaint(); int boundedWidth = bookView.getInnerView().getWidth(); LOG.debug("Page width: " + boundedWidth); StaticLayout layout = layoutFactory.create(text, textPaint, boundedWidth, bookView.getLineSpacing()); LOG.debug("Layout height: " + layout.getHeight()); layout.draw(new Canvas()); // Subtract the height of the top margin int pageHeight = bookView.getHeight() - bookView.getVerticalMargin(); if (includePageNumbers) { String bottomSpace = "0\n"; StaticLayout numLayout = layoutFactory.create(bottomSpace, textPaint, boundedWidth, bookView.getLineSpacing()); numLayout.draw(new Canvas()); // Subtract the height needed to show page numbers, or the // height of the margin, whichever is more pageHeight = pageHeight - Math.max(numLayout.getHeight(), bookView.getVerticalMargin()); } else { // Just subtract the bottom margin pageHeight = pageHeight - bookView.getVerticalMargin(); } LOG.debug("Got pageHeight " + pageHeight); int totalLines = layout.getLineCount(); int topLineNextPage = -1; int pageStartOffset = 0; while (topLineNextPage < totalLines - 1) { LOG.debug("Processing line " + topLineNextPage + " / " + totalLines); int topLine = layout.getLineForOffset(pageStartOffset); topLineNextPage = layout.getLineForVertical(layout.getLineTop(topLine) + pageHeight); LOG.debug("topLine " + topLine + " / " + topLineNextPage); if (topLineNextPage == topLine) { // If lines are bigger than can fit on a page topLineNextPage = topLine + 1; } int pageEnd = layout.getLineEnd(topLineNextPage - 1); LOG.debug("pageStartOffset=" + pageStartOffset + ", pageEnd=" + pageEnd); if (pageEnd > pageStartOffset) { if (text.subSequence(pageStartOffset, pageEnd).toString().trim().length() > 0) { pageOffsets.add(pageStartOffset); } pageStartOffset = layout.getLineStart(topLineNextPage); } } return pageOffsets; }