List of usage examples for android.text SpannableString subSequence
public final CharSequence subSequence(int start, int end)
From source file:com.android.screenspeak.menurules.RuleSpannables.java
@Override public List<ContextMenuItem> getMenuItemsForNode(ScreenSpeakService service, ContextMenuItemBuilder menuItemBuilder, AccessibilityNodeInfoCompat node) { final SpannableString spannable = (SpannableString) node.getText(); final URLSpan[] urlSpans = spannable.getSpans(0, spannable.length(), URLSpan.class); final LinkedList<ContextMenuItem> result = new LinkedList<>(); if ((urlSpans == null) || (urlSpans.length == 0)) { return result; }//www . j av a2 s . com for (int i = 0; i < urlSpans.length; i++) { final URLSpan urlSpan = urlSpans[i]; final String url = urlSpan.getURL(); final int start = spannable.getSpanStart(urlSpan); final int end = spannable.getSpanEnd(urlSpan); final CharSequence label = spannable.subSequence(start, end); if (TextUtils.isEmpty(url) || TextUtils.isEmpty(label)) { continue; } final Uri uri = Uri.parse(url); if (uri.isRelative()) { // Generally, only absolute URIs are resolvable to an activity continue; } final ContextMenuItem item = menuItemBuilder.createMenuItem(service, Menu.NONE, i, Menu.NONE, label); item.setOnMenuItemClickListener(new SpannableMenuClickListener(service, uri)); result.add(item); } return result; }
From source file:com.android.talkback.menurules.RuleSpannables.java
@Override public List<ContextMenuItem> getMenuItemsForNode(TalkBackService service, ContextMenuItemBuilder menuItemBuilder, AccessibilityNodeInfoCompat node) { final LinkedList<ContextMenuItem> result = new LinkedList<>(); final SpannableString spannable = getStringWithUrlSpan(node); if (spannable == null) { return result; }/*from w w w . j av a 2s . com*/ final URLSpan[] urlSpans = spannable.getSpans(0, spannable.length(), URLSpan.class); if ((urlSpans == null) || (urlSpans.length == 0)) { return result; } for (int i = 0; i < urlSpans.length; i++) { final URLSpan urlSpan = urlSpans[i]; final String url = urlSpan.getURL(); final int start = spannable.getSpanStart(urlSpan); final int end = spannable.getSpanEnd(urlSpan); final CharSequence label = spannable.subSequence(start, end); if (TextUtils.isEmpty(url) || TextUtils.isEmpty(label)) { continue; } final Uri uri = Uri.parse(url); if (uri.isRelative()) { // Generally, only absolute URIs are resolvable to an activity continue; } final ContextMenuItem item = menuItemBuilder.createMenuItem(service, Menu.NONE, i, Menu.NONE, label); item.setOnMenuItemClickListener(new SpannableMenuClickListener(service, uri)); result.add(item); } return result; }
From source file:com.amazon.android.ui.widget.EllipsizedTextView.java
/** * Sets ellipsis properties.//from www. java2 s .co m * * @param widthMeasureSpec Ellipsis width. * @param heightMeasureSpec Ellipsis height. * @param layout Layout for ellipsis. * @param lastLine Last line length for ellipsis. * @param maxLines Max lines in ellipsis. */ private void setEllipsis(int widthMeasureSpec, int heightMeasureSpec, Layout layout, int lastLine, int maxLines) { mIsEllipsized = true; setFocusable(true); setClickable(true); final SpannableString ss = new SpannableString(mCharSequence); String visibleText = mCharSequence.toString(); mEllipsisImage = new StateImageSpan(getContext(), mGuillemetDrawableId, ImageSpan.ALIGN_BASELINE); final SpannableStringBuilder spannedText = new SpannableStringBuilder(); int ellipsisIndex = layout.getLineStart(Math.min(lastLine + 1, maxLines)); // Keep chopping words off until the ellipsis is on a visible line or there is only one // line left. do { // Only truncate the last line for long description. if (lastLine >= maxLines) { // Getting the first word break index before the last index of maxline. int safeBreakIndex = breakBefore(visibleText, ellipsisIndex, BreakIterator.getWordInstance()); final int maxLineStart = layout.getLineStart(maxLines - 1); // If this check pass, it means we just truncated a word that is longer than a line. if (safeBreakIndex < maxLineStart) { // Need to check character by character and break in the middle now. Checking // word by word should cover most cases, only do this if a word is longer than // line width. safeBreakIndex = breakBefore(visibleText, ellipsisIndex, BreakIterator.getCharacterInstance()); } ellipsisIndex = safeBreakIndex; } visibleText = visibleText.substring(0, ellipsisIndex); final CharSequence charOutput = ss.subSequence(0, ellipsisIndex); // Re-add ellipsis and convert to image spannedText.replace(0, spannedText.length(), charOutput); spannedText.append(ELLIPSIS); spannedText.setSpan(mEllipsisImage, ellipsisIndex, ellipsisIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE); // Reset text and re-measure. super.setText(spannedText, BufferType.SPANNABLE); super.onMeasure(widthMeasureSpec, heightMeasureSpec); } while (getLineCount() > getMaxLines() && getLineCount() > 1); requestFocus(); }
From source file:cn.dreamtobe.emoji.ellipsize.helper.SpanEllipsizeEndHelper.java
@TargetApi(Build.VERSION_CODES.JELLY_BEAN) public static CharSequence matchMaxWidth(SpannableString targetText, TextView textView) { if (targetText.length() <= 0) { return targetText; }//from w w w .jav a2 s. c o m if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { return targetText; } if (textView == null) { return targetText; } final int maxWidth = textView.getMaxWidth(); if (maxWidth <= 0 || maxWidth >= Integer.MAX_VALUE) { return targetText; } if (textView.getEllipsize() != TextUtils.TruncateAt.END) { return targetText; } //TODO Multi-lines support if (textView.getMaxLines() != 1) { return targetText; } final String maxWidthKey = getMaxWidthKey(targetText, textView); SpannableString tmpText = SPAN_MAXWIDTH_CACHE.get(maxWidthKey); if (tmpText != null) { removeClickableSpan(tmpText); return tmpText; } TextPaint textPaint = textView.getPaint(); if (textPaint == null) { return targetText; } final int totalWidth = (int) textPaint.measureText(targetText, 0, targetText.length()); if (totalWidth <= maxWidth) { return targetText; } final long startTime = System.currentTimeMillis(); // deal maxwitdh final int dotWidth = (int) textPaint.measureText("..."); tmpText = targetText; int start = 0; int end = targetText.length(); // targetX is maxWidth - "...".length int targetX = maxWidth - dotWidth; //dichotomy: get x most touch targetX int middle = targetText.length(); int x = 0; while (start <= end) { // tx = targetX, tl = targetLength // width: 0 x // length: 0 middle end // -------------|------------- middle = (start + end) / 2; int emojiDraW = 0; int emojiStrW = 0; int emojiExcursion = 1; final Object[] tmpSpans = tmpText.getSpans(0, middle, Object.class); if (tmpSpans != null) { for (Object tmpSpan : tmpSpans) { final int tmpStart = tmpText.getSpanStart(tmpSpan); final int tmpEnd = tmpText.getSpanEnd(tmpSpan); //middle in (tmpStart, tmpEnd) if (tmpStart < middle && tmpEnd > middle) { middle = tmpEnd; emojiExcursion = tmpEnd - tmpStart; } } // TextPaint#measure do not attention span, so adjust by ourselves for (Object tmpSpan : tmpSpans) { final int tmpStart = tmpText.getSpanStart(tmpSpan); final int tmpEnd = tmpText.getSpanEnd(tmpSpan); // TODO support other span if (tmpStart < middle && tmpSpan instanceof ImageSpan) { emojiDraW += ((ImageSpan) tmpSpan).getDrawable().getBounds().width(); emojiStrW += textPaint.measureText(tmpText, tmpStart, tmpEnd); } } } x = (int) textPaint.measureText(tmpText, 0, middle); x = x - emojiStrW + emojiDraW; // x = (int) (textPaint.measureText(pureStr, 0, pureStr.length()) + emojiWidth); // Log.d(TAG, String.format("targetX: %d, currentX: %d, currentLength: %d, totalLength: %d, emojiStrW[%d], emojiDraW[%d]", targetX, x, middle, targetText.length(), emojiStrW, emojiDraW)); if (x > targetX) { // width: 0 tx x // length: start tl middle end // ----|---------|------------- // TO: start | *end // ----|--------|-------------- end = middle - emojiExcursion; } else if (x < targetX) { // width: 0 x tx // length: start middle tl end // --------------|-------|------ // TO: *start | end // ---------------|------|------ start = middle + 1; } else { break; } } // adjust x larger targetX while (x > targetX && middle > 0) { x = (int) textPaint.measureText(tmpText, 0, --middle); } // adjust x middle emoji span final Object[] ajustSpans = tmpText.getSpans(0, tmpText.length(), Object.class); for (Object adjustSpan : ajustSpans) { final int adjustStart = tmpText.getSpanStart(adjustSpan); final int adjustEnd = tmpText.getSpanEnd(adjustSpan); //[adjustStart, adjustEnd) if (middle >= adjustStart && middle < adjustEnd) { middle = adjustStart - 1; break; } } // finnal middle // sub sequence [0, middle + 1) & remove [middle +1, length] spans tmpText = (SpannableString) tmpText.subSequence(0, middle + 1); // Log.d(TAG, String.format("sub Sequence[0, %d), [%s] to [%s]", middle + 1, targetText, tmpText)); // add ... final SpannableString maxWidthSS = new SpannableString(tmpText + "..."); final Object[] maxWidthSpans = tmpText.getSpans(0, tmpText.length(), Object.class); if (maxWidthSpans != null) { for (Object maxWidthSpan : maxWidthSpans) { final int mwSpanStart = tmpText.getSpanStart(maxWidthSpan); final int mwSpanEnd = tmpText.getSpanEnd(maxWidthSpan); final int mwSpanFlag = tmpText.getSpanFlags(maxWidth); maxWidthSS.setSpan(maxWidthSpan, mwSpanStart, mwSpanEnd, mwSpanFlag); } } targetText = maxWidthSS; SPAN_MAXWIDTH_CACHE.put(maxWidthKey, targetText); Log.d(TAG, String.format("deal maxWidth %d", System.currentTimeMillis() - startTime)); return targetText; }