Java Code Examples for android.widget.TextView#getLayout()

public static float GetLetterPositionX(@NonNull TextView aView, int aLetterIndex, boolean aClamp) {
    Layout layout = aView.getLayout();
    if (layout == null) {
        return 0;
    }
    float x = layout.getPrimaryHorizontal(aLetterIndex);
    x += aView.getPaddingLeft();
    x -= aView.getScrollX();
    if (aClamp && x > (aView.getMeasuredWidth() - aView.getPaddingRight())) {
        x = aView.getMeasuredWidth() - aView.getPaddingRight();
    }
    if (aClamp && x < aView.getPaddingLeft()) {
        x = aView.getPaddingLeft();
    }
    return x;
}
 

private String getLinkText(final TextView widget, final Spannable buffer, final MotionEvent event) {
    int x = (int) event.getX();
    int y = (int) event.getY();

    x -= widget.getTotalPaddingLeft();
    y -= widget.getTotalPaddingTop();

    x += widget.getScrollX();
    y += widget.getScrollY();

    Layout layout = widget.getLayout();
    int line = layout.getLineForVertical(y);
    int off = layout.getOffsetForHorizontal(line, x);

    ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);

    if (link.length != 0) {
        return buffer.subSequence(buffer.getSpanStart(link[0]),
                buffer.getSpanEnd(link[0])).toString();
    }

    return "";
}
 

/**
 * Performs a scroll up action.
 * Scrolls up by the specified number of lines.
 *
 * @param widget The text view.
 * @param buffer The text buffer.
 * @param amount The number of lines to scroll by.  Must be at least 1.
 * @return True if the event was handled.
 * @hide
 */
protected boolean scrollUp(TextView widget, Spannable buffer, int amount) {
    final Layout layout = widget.getLayout();
    final int top = widget.getScrollY();
    int topLine = layout.getLineForVertical(top);
    if (layout.getLineTop(topLine) == top) {
        // If the top line is partially visible, bring it all the way
        // into view; otherwise, bring the previous line into view.
        topLine -= 1;
    }
    if (topLine >= 0) {
        topLine = Math.max(topLine - amount + 1, 0);
        Touch.scrollTo(widget, layout, widget.getScrollX(), layout.getLineTop(topLine));
        return true;
    }
    return false;
}
 

private TouchableSpan getPressedSpan(TextView textView, Spannable spannable, MotionEvent event) {

            int x = (int) event.getX();
            int y = (int) event.getY();

            x -= textView.getTotalPaddingLeft();
            y -= textView.getTotalPaddingTop();

            x += textView.getScrollX();
            y += textView.getScrollY();

            Layout layout = textView.getLayout();
            int line = layout.getLineForVertical(y);
            int off = layout.getOffsetForHorizontal(line, x);

            TouchableSpan[] link = spannable.getSpans(off, off, TouchableSpan.class);
            TouchableSpan touchedSpan = null;
            if (link.length > 0) {
                touchedSpan = link[0];
            }
            return touchedSpan;
        }
 

/**
 * Performs a scroll to bottom action.
 * Scrolls to the bottom of the document.
 *
 * @param widget The text view.
 * @param buffer The text buffer.
 * @return True if the event was handled.
 * @hide
 */
protected boolean scrollBottom(TextView widget, Spannable buffer) {
    final Layout layout = widget.getLayout();
    final int lineCount = layout.getLineCount();
    if (getBottomLine(widget) <= lineCount - 1) {
        Touch.scrollTo(widget, layout, widget.getScrollX(),
                layout.getLineTop(lineCount) - getInnerHeight(widget));
        return true;
    }
    return false;
}
 

/**
 * Find the span that was clicked
 *
 * @param widget    view the user clicked
 * @param spannable spannable string inside the clicked view
 * @param event     motion event that occurred
 * @return the touchable span that was pressed
 */
private URLSpan getPressedSpan(TextView widget, Spannable spannable, MotionEvent event) {
    int x = Math.round(event.getX());
    int y = Math.round(event.getY());

    x -= widget.getTotalPaddingLeft();
    y -= widget.getTotalPaddingTop();

    x += widget.getScrollX();
    y += widget.getScrollY();

    Layout layout = widget.getLayout();
    int line = layout.getLineForVertical(y);

    int off;
    try {
        off = layout.getOffsetForHorizontal(line, (float) x);
    } catch (IndexOutOfBoundsException e) {
        return null;
    }

    int end = layout.getLineEnd(line);

    // offset seems like it can be one off in some cases
    // Could be what was causing issue 7 in the first place:
    // https://github.com/klinker24/Android-TextView-LinkBuilder/issues/7
    if (off != end && off != end - 1) {
        URLSpan[] links = spannable.getSpans(off, off, URLSpan.class);

        if (links.length > 0) {
            return links[0];
        }
    }

    return null;
}
 

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {

    int action = event.getActionMasked();
    if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) {

        int x = (int) event.getX();
        int y = (int) event.getY();
        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();
        x += widget.getScrollX();
        y += widget.getScrollY();

        Layout layout = widget.getLayout();
        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);

        ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);
        if (link.length > 0) {
            if (action == MotionEvent.ACTION_UP) {
                link[0].onClick(widget);
            } else {
                Selection.setSelection(buffer, buffer.getSpanStart(link[0]),
                        buffer.getSpanEnd(link[0]));
            }
            return true;
        } else {
            Selection.removeSelection(buffer);
        }
    }

    return false;
}
 

@Override
protected boolean lineStart(TextView widget, Spannable buffer) {
    final Layout layout = widget.getLayout();
    if (isSelecting(buffer)) {
        return Selection.extendToLeftEdge(buffer, layout);
    } else {
        return Selection.moveToLeftEdge(buffer, layout);
    }
}
 

@Override
public void onTakeFocus(TextView view, Spannable text, int dir) {
    if ((dir & (View.FOCUS_FORWARD | View.FOCUS_DOWN)) != 0) {
        if (view.getLayout() == null) {
            // This shouldn't be null, but do something sensible if it is.
            Selection.setSelection(text, text.length());
        }
    } else {
        Selection.setSelection(text, text.length());
    }
}
 

@Override
protected boolean right(TextView widget, Spannable buffer) {
    final Layout layout = widget.getLayout();
    if (isSelecting(buffer)) {
        return Selection.extendRight(buffer, layout);
    } else {
        return Selection.moveRight(buffer, layout);
    }
}
 

public static boolean isEllipsed(@NonNull TextView textView) {
    Layout layout = textView.getLayout();
    if (layout != null) {
        int lines = layout.getLineCount();
        if (lines > 0) {
            return IntStream.range(0, lines).anyMatch(line -> layout.getEllipsisCount(line) > 0);
        }
    }
    return false;
}
 

private float getMaxLineWidth(TextView textView) {
    Layout layout = textView.getLayout();
    float max_width = 0.0f;
    int lines = layout.getLineCount();
    for (int i = 0; i < lines; i++) {
        if (layout.getLineWidth(i) > max_width) {
            max_width = layout.getLineWidth(i);
        }
    }
    return max_width;
}
 

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
  int action = event.getAction();

  if (action == MotionEvent.ACTION_UP ||
          action == MotionEvent.ACTION_DOWN) {
    int x = (int) event.getX();
    int y = (int) event.getY();

    x -= widget.getTotalPaddingLeft();
    y -= widget.getTotalPaddingTop();

    x += widget.getScrollX();
    y += widget.getScrollY();

    Layout layout = widget.getLayout();
    int line = layout.getLineForVertical(y);
    int off = layout.getOffsetForHorizontal(line, x);

    LongClickCopySpan longClickCopySpan[] = buffer.getSpans(off, off, LongClickCopySpan.class);
    if (longClickCopySpan.length != 0) {
      LongClickCopySpan aSingleSpan = longClickCopySpan[0];
      if (action == MotionEvent.ACTION_DOWN) {
        Selection.setSelection(buffer, buffer.getSpanStart(aSingleSpan),
                buffer.getSpanEnd(aSingleSpan));
        aSingleSpan.setHighlighted(true,
                ContextCompat.getColor(widget.getContext(), R.color.touch_highlight));
      } else {
        Selection.removeSelection(buffer);
        aSingleSpan.setHighlighted(false, Color.TRANSPARENT);
      }

      this.currentSpan = aSingleSpan;
      this.widget = widget;
      return gestureDetector.onTouchEvent(event);
    }
  } else if (action == MotionEvent.ACTION_CANCEL) {
    // Remove Selections.
    LongClickCopySpan[] spans = buffer.getSpans(Selection.getSelectionStart(buffer),
            Selection.getSelectionEnd(buffer), LongClickCopySpan.class);
    for (LongClickCopySpan aSpan : spans) {
      aSpan.setHighlighted(false, Color.TRANSPARENT);
    }
    Selection.removeSelection(buffer);
    return gestureDetector.onTouchEvent(event);
  }
  return super.onTouchEvent(widget, buffer, event);
}
 

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer,
        MotionEvent event) {
    int action = event.getAction();

    if (action == MotionEvent.ACTION_UP ||
            action == MotionEvent.ACTION_DOWN) {
        int x = (int) event.getX();
        int y = (int) event.getY();

        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();

        x += widget.getScrollX();
        y += widget.getScrollY();

        Layout layout = widget.getLayout();
        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);

        ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);

        if (link.length != 0) {
            if (action == MotionEvent.ACTION_UP) {
                ClickableSpan span = link[0];
                if (span instanceof URLSpan) {
                    UrlOpener.openUrl(widget.getContext(), ((URLSpan) span).getURL(), true);
                } else {
                    span.onClick(widget);
                }
            } else if (action == MotionEvent.ACTION_DOWN) {
                Selection.setSelection(buffer,
                        buffer.getSpanStart(link[0]),
                        buffer.getSpanEnd(link[0]));
            }

            return true;
        } else {
            Selection.removeSelection(buffer);
        }
    }

    return super.onTouchEvent(widget, buffer, event);
}
 

private boolean action(int what, TextView widget, Spannable buffer) {
    Layout layout = widget.getLayout();

    int padding = widget.getTotalPaddingTop() +
            widget.getTotalPaddingBottom();
    int areatop = widget.getScrollY();
    int areabot = areatop + widget.getHeight() - padding;

    int linetop = layout.getLineForVertical(areatop);
    int linebot = layout.getLineForVertical(areabot);

    int first = layout.getLineStart(linetop);
    int last = layout.getLineEnd(linebot);

    ClickableSpan[] candidates = buffer.getSpans(first, last, ClickableSpan.class);

    int a = Selection.getSelectionStart(buffer);
    int b = Selection.getSelectionEnd(buffer);

    int selStart = Math.min(a, b);
    int selEnd = Math.max(a, b);

    if (selStart < 0) {
        if (buffer.getSpanStart(FROM_BELOW) >= 0) {
            selStart = selEnd = buffer.length();
        }
    }

    if (selStart > last)
        selStart = selEnd = Integer.MAX_VALUE;
    if (selEnd < first)
        selStart = selEnd = -1;

    switch (what) {
        case CLICK:
            if (selStart == selEnd) {
                return false;
            }

            ClickableSpan[] link = buffer.getSpans(selStart, selEnd, ClickableSpan.class);

            if (link.length != 1)
                return false;

            link[0].onClick(widget);
            break;

        case UP:
            int beststart, bestend;

            beststart = -1;
            bestend = -1;

            for (int i = 0; i < candidates.length; i++) {
                int end = buffer.getSpanEnd(candidates[i]);

                if (end < selEnd || selStart == selEnd) {
                    if (end > bestend) {
                        beststart = buffer.getSpanStart(candidates[i]);
                        bestend = end;
                    }
                }
            }

            if (beststart >= 0) {
                Selection.setSelection(buffer, bestend, beststart);
                return true;
            }

            break;

        case DOWN:
            beststart = Integer.MAX_VALUE;
            bestend = Integer.MAX_VALUE;

            for (int i = 0; i < candidates.length; i++) {
                int start = buffer.getSpanStart(candidates[i]);

                if (start > selStart || selStart == selEnd) {
                    if (start < beststart) {
                        beststart = start;
                        bestend = buffer.getSpanEnd(candidates[i]);
                    }
                }
            }

            if (bestend < Integer.MAX_VALUE) {
                Selection.setSelection(buffer, beststart, bestend);
                return true;
            }

            break;
    }

    return false;
}
 

private boolean action(int what, TextView widget, Spannable buffer) {
    Layout layout = widget.getLayout();

    int padding = widget.getTotalPaddingTop() + widget.getTotalPaddingBottom();
    int areatop = widget.getScrollY();
    int areabot = areatop + widget.getHeight() - padding;

    int linetop = layout.getLineForVertical(areatop);
    int linebot = layout.getLineForVertical(areabot);

    int first = layout.getLineStart(linetop);
    int last = layout.getLineEnd(linebot);

    MyURLSpan[] candidates = buffer.getSpans(first, last, MyURLSpan.class);

    int a = Selection.getSelectionStart(buffer);
    int b = Selection.getSelectionEnd(buffer);

    int selStart = Math.min(a, b);
    int selEnd = Math.max(a, b);

    if (selStart < 0) {
        if (buffer.getSpanStart(FROM_BELOW) >= 0) {
            selStart = selEnd = buffer.length();
        }
    }

    if (selStart > last) {
        selStart = selEnd = Integer.MAX_VALUE;
    }
    if (selEnd < first) {
        selStart = selEnd = -1;
    }

    switch (what) {
        case CLICK:
            if (selStart == selEnd) {
                return false;
            }

            MyURLSpan[] link = buffer.getSpans(selStart, selEnd, MyURLSpan.class);

            if (link.length != 1) {
                return false;
            }

            link[0].onClick(widget);
            break;

        case UP:
            int best_start = -1;
            int best_end = -1;

            for (MyURLSpan candidate1 : candidates) {
                int end = buffer.getSpanEnd(candidate1);

                if (end < selEnd || selStart == selEnd) {
                    if (end > best_end) {
                        best_start = buffer.getSpanStart(candidate1);
                        best_end = end;
                    }
                }
            }

            if (best_start >= 0) {
                Selection.setSelection(buffer, best_end, best_start);
                return true;
            }

            break;

        case DOWN:
            best_start = Integer.MAX_VALUE;
            best_end = Integer.MAX_VALUE;

            for (MyURLSpan candidate : candidates) {
                int start = buffer.getSpanStart(candidate);

                if (start > selStart || selStart == selEnd) {
                    if (start < best_start) {
                        best_start = start;
                        best_end = buffer.getSpanEnd(candidate);
                    }
                }
            }

            if (best_end < Integer.MAX_VALUE) {
                Selection.setSelection(buffer, best_start, best_end);
                return true;
            }

            break;
    }

    return false;
}
 

@Override
public boolean onTouchEvent(@NonNull TextView widget, @NonNull Spannable buffer, @NonNull MotionEvent event) {
    int action = event.getAction();

    if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) {

        Layout layout = widget.getLayout();

        if (layout == null) {
            return super.onTouchEvent(widget, buffer, event);
        }

        int x = (int) event.getX();
        int y = (int) event.getY();

        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();

        x += widget.getScrollX();
        y += widget.getScrollY();

        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);

        MyURLSpan[] link = buffer.getSpans(off, off, MyURLSpan.class);

        if (link.length != 0) {
            if (action == MotionEvent.ACTION_UP) {
                if (!mHasPerformedLongPress) {
                    link[0].onClick(widget);
                }
                pressed = false;
                lastEvent = new float[2];
            } else {
                pressed = true;
                lastEvent[0] = event.getX();
                lastEvent[1] = event.getY();
                checkForLongClick(link, widget);
            }

            return true;
        }
    } else if (action == MotionEvent.ACTION_MOVE) {
        float[] position = {
                event.getX(), event.getY()
        };
        // int slop =
        // ViewConfiguration.get(widget.getContext()).getScaledTouchSlop();
        int slop = 6;
        float xInstance = Math.abs(lastEvent[0] - position[0]);
        float yInstance = Math.abs(lastEvent[1] - position[1]);
        double instance = Math.sqrt(Math.hypot(xInstance, yInstance));
        if (instance > slop) {
            pressed = false;
        }
    } else if (action == MotionEvent.ACTION_CANCEL) {
        pressed = false;
        lastEvent = new float[2];
    } else {
        pressed = false;
        lastEvent = new float[2];
    }
    return super.onTouchEvent(widget, buffer, event);
}
 

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
    int action = event.getAction();

    if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) {
        int x = (int) event.getX();
        int y = (int) event.getY();

        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();

        x += widget.getScrollX();
        y += widget.getScrollY();

        Layout layout = widget.getLayout();
        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);

        ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);

        if (link.length != 0) {
            if (action == MotionEvent.ACTION_UP) {
                try {
                    link[0].onClick(widget);
                } catch (Exception e) {
                    e.printStackTrace();
                    ToastUtil.e(R.string.not_foud_qq);
                }
                if (((URLSpan) link[0]).getURL() != null) {
                    if (DonateActivity.zhifubao.startsWith(((URLSpan) link[0]).getURL())) {
                        UrlCountUtil.onEvent(UrlCountUtil.CLICK_SETTINGS_ABOUT_DONATE);
                    } else if (DonateActivity.qqJump.startsWith(((URLSpan) link[0]).getURL())) {
                        UrlCountUtil.onEvent(UrlCountUtil.CLICK_SETTINGS_JOIN_QQ);
                    }
                }
            } else if (action == MotionEvent.ACTION_DOWN) {
                Selection.setSelection(buffer, buffer.getSpanStart(link[0]), buffer.getSpanEnd(link[0]));
            }

            return true;
        } else {
            Selection.removeSelection(buffer);
        }
    }

    return super.onTouchEvent(widget, buffer, event);
}
 

@Override
public boolean onTouchEvent(TextView widget, final Spannable buffer, MotionEvent event) {
    comm = (SpoilerRobotoTextView) widget;

    int x = (int) event.getX();
    int y = (int) event.getY();
    x -= widget.getTotalPaddingLeft();
    y -= widget.getTotalPaddingTop();
    x += widget.getScrollX();
    y += widget.getScrollY();

    Layout layout = widget.getLayout();
    int line = layout.getLineForVertical(y);
    int off = layout.getOffsetForHorizontal(line, x);

    link = buffer.getSpans(off, off, URLSpan.class);
    if (link.length > 0) {
        comm.setLongClickable(false);

        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            position = event.getY(); //used to see if the user scrolled or not
        }
        if (!(event.getAction() == MotionEvent.ACTION_UP
                || event.getAction() == MotionEvent.ACTION_DOWN)) {
            if (Math.abs((position - event.getY())) > 25) {
                handler.removeCallbacksAndMessages(null);
            }
            return super.onTouchEvent(widget, buffer, event);
        }

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                clickHandled = false;
                this.event = event;
                if (SettingValues.peek) {
                    handler.postDelayed(longClicked,
                            android.view.ViewConfiguration.getTapTimeout() + 50);
                } else {
                    handler.postDelayed(longClicked,
                            android.view.ViewConfiguration.getLongPressTimeout());
                }

                break;
            case MotionEvent.ACTION_UP:
                comm.setLongClickable(true);
                handler.removeCallbacksAndMessages(null);

                if (!clickHandled) {
                    // regular click
                    if (link.length != 0) {
                        int i = 0;
                        if (sequence != null) {
                            i = sequence.getSpanEnd(link[0]);
                        }
                        if (!link[0].getURL().isEmpty()) {
                            clickableText.onLinkClick(link[0].getURL(), i, subreddit, link[0]);
                        }
                    } else {
                        return false;
                    }
                }
                break;
        }
        return true;

    } else {
        Selection.removeSelection(buffer);
        return false;
    }
}
 

@Override
        public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
            int action = event.getAction();

//            LogUtils.printLog(WeiboTextView.class, "MotionEvent:" + action);

//            if (action == MotionEvent.ACTION_MOVE) {
//                isPressed = false;
//            }
            switch (action) {
                case MotionEvent.ACTION_DOWN:
                    break;
                case MotionEvent.ACTION_UP:
                    break;

                case MotionEvent.ACTION_CANCEL:
                    buffer.setSpan(new BackgroundColorSpan(0x00000000), 0, weiboTextView.length(),
                            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                    Selection.setSelection(buffer, 0, weiboTextView.length());
                    break;
            }


            if (action == MotionEvent.ACTION_UP ||
                    action == MotionEvent.ACTION_DOWN) {
                int x = (int) event.getX();
                int y = (int) event.getY();

                x -= widget.getTotalPaddingLeft();
                y -= widget.getTotalPaddingTop();

                x += widget.getScrollX();
                y += widget.getScrollY();

                Layout layout = widget.getLayout();
                int line = layout.getLineForVertical(y);
                int off = layout.getOffsetForHorizontal(line, x);

                ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);

                if (link.length != 0) {

                    int start = buffer.getSpanStart(link[0]);
                    int end = buffer.getSpanEnd(link[0]);

//                    LogUtils.printLog(WebViewUtils.class, "start:" + start + " end:" + end);

                    if (action == MotionEvent.ACTION_UP) {
                        link[0].onClick(widget);
                        buffer.setSpan(new BackgroundColorSpan(0x00000000), start, end,
                                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        Selection.setSelection(buffer, start, end);
                    } else if (action == MotionEvent.ACTION_DOWN) {
                        buffer.setSpan(new BackgroundColorSpan(weiboTextView.clickBgClolr), start, end,
                                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        Selection.setSelection(buffer, start, end);
                    }

                    if (widget instanceof WeiboTextView) {
                        ((WeiboTextView) widget).linkHit = true;
                    }
                    return true;
                } else {
                    Selection.removeSelection(buffer);
                    Touch.onTouchEvent(widget, buffer, event);
                    return false;
                }
            }


            return Touch.onTouchEvent(widget, buffer, event);
        }