Java Code Examples for android.text.Layout#getParagraphDirection()

The following examples show how to use android.text.Layout#getParagraphDirection() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: UrlBar.java    From delion with Apache License 2.0 6 votes vote down vote up
/**
 * If the direction of the URL has changed, update mUrlDirection and notify the
 * UrlDirectionListeners.
 */
private void updateUrlDirection() {
    Layout layout = getLayout();
    if (layout == null) return;

    int urlDirection;
    if (length() == 0) {
        urlDirection = LAYOUT_DIRECTION_LOCALE;
    } else if (layout.getParagraphDirection(0) == Layout.DIR_LEFT_TO_RIGHT) {
        urlDirection = LAYOUT_DIRECTION_LTR;
    } else {
        urlDirection = LAYOUT_DIRECTION_RTL;
    }

    if (urlDirection != mUrlDirection) {
        mUrlDirection = urlDirection;
        if (mUrlDirectionListener != null) {
            mUrlDirectionListener.onUrlDirectionChanged(urlDirection);
        }
    }
}
 
Example 2
Source File: UrlBar.java    From AndroidChromium with Apache License 2.0 6 votes vote down vote up
/**
 * If the direction of the URL has changed, update mUrlDirection and notify the
 * UrlDirectionListeners.
 */
private void updateUrlDirection() {
    Layout layout = getLayout();
    if (layout == null) return;

    int urlDirection;
    if (length() == 0) {
        urlDirection = LAYOUT_DIRECTION_LOCALE;
    } else if (layout.getParagraphDirection(0) == Layout.DIR_LEFT_TO_RIGHT) {
        urlDirection = LAYOUT_DIRECTION_LTR;
    } else {
        urlDirection = LAYOUT_DIRECTION_RTL;
    }

    if (urlDirection != mUrlDirection) {
        mUrlDirection = urlDirection;
        if (mUrlDirectionListener != null) {
            mUrlDirectionListener.onUrlDirectionChanged(urlDirection);
        }
    }
}
 
Example 3
Source File: UrlBar.java    From 365browser with Apache License 2.0 6 votes vote down vote up
/**
 * If the direction of the URL has changed, update mUrlDirection and notify the
 * UrlDirectionListeners.
 */
private void updateUrlDirection() {
    Layout layout = getLayout();
    if (layout == null) return;

    int urlDirection;
    if (length() == 0) {
        urlDirection = LAYOUT_DIRECTION_LOCALE;
    } else if (layout.getParagraphDirection(0) == Layout.DIR_LEFT_TO_RIGHT) {
        urlDirection = LAYOUT_DIRECTION_LTR;
    } else {
        urlDirection = LAYOUT_DIRECTION_RTL;
    }

    if (urlDirection != mUrlDirection) {
        mUrlDirection = urlDirection;
        if (mUrlDirectionListener != null) {
            mUrlDirectionListener.onUrlDirectionChanged(urlDirection);
        }
    }
}
 
Example 4
Source File: Touch.java    From android_9.0.0_r45 with Apache License 2.0 4 votes vote down vote up
/**
 * Scrolls the specified widget to the specified coordinates, except
 * constrains the X scrolling position to the horizontal regions of
 * the text that will be visible after scrolling to the specified
 * Y position.
 */
public static void scrollTo(TextView widget, Layout layout, int x, int y) {
    final int horizontalPadding = widget.getTotalPaddingLeft() + widget.getTotalPaddingRight();
    final int availableWidth = widget.getWidth() - horizontalPadding;

    final int top = layout.getLineForVertical(y);
    Alignment a = layout.getParagraphAlignment(top);
    boolean ltr = layout.getParagraphDirection(top) > 0;

    int left, right;
    if (widget.getHorizontallyScrolling()) {
        final int verticalPadding = widget.getTotalPaddingTop() + widget.getTotalPaddingBottom();
        final int bottom = layout.getLineForVertical(y + widget.getHeight() - verticalPadding);

        left = Integer.MAX_VALUE;
        right = 0;

        for (int i = top; i <= bottom; i++) {
            left = (int) Math.min(left, layout.getLineLeft(i));
            right = (int) Math.max(right, layout.getLineRight(i));
        }
    } else {
        left = 0;
        right = availableWidth;
    }

    final int actualWidth = right - left;

    if (actualWidth < availableWidth) {
        if (a == Alignment.ALIGN_CENTER) {
            x = left - ((availableWidth - actualWidth) / 2);
        } else if ((ltr && (a == Alignment.ALIGN_OPPOSITE)) ||
                   (!ltr && (a == Alignment.ALIGN_NORMAL)) ||
                   (a == Alignment.ALIGN_RIGHT)) {
            // align_opposite does NOT mean align_right, we need the paragraph
            // direction to resolve it to left or right
            x = left - (availableWidth - actualWidth);
        } else {
            x = left;
        }
    } else {
        x = Math.min(x, right - availableWidth);
        x = Math.max(x, left);
    }

    widget.scrollTo(x, y);
}
 
Example 5
Source File: CodeTextView.java    From Markwon with Apache License 2.0 4 votes vote down vote up
private void draw(
        @NonNull View view,
        @NonNull Canvas canvas,
        @NonNull Layout layout
) {

    final CharSequence cs = layout.getText();
    if (!(cs instanceof Spanned)) {
        return;
    }
    final Spanned spanned = (Spanned) cs;

    final int save = canvas.save();
    try {
        canvas.translate(view.getPaddingLeft(), view.getPaddingTop());

        // TODO: block?
        // TODO: we must remove _original_ spans
        // TODO: cache (attach a listener?)
        // TODO: editor?

        final CodeSpan[] spans = spanned.getSpans(0, spanned.length(), CodeSpan.class);
        if (spans != null && spans.length > 0) {
            for (CodeSpan span : spans) {

                final int startOffset = spanned.getSpanStart(span);
                final int endOffset = spanned.getSpanEnd(span);

                final int startLine = layout.getLineForOffset(startOffset);
                final int endLine = layout.getLineForOffset(endOffset);

                // do we need to round them?
                final float left = layout.getPrimaryHorizontal(startOffset)
                        + (-1 * layout.getParagraphDirection(startLine) * paddingHorizontal);

                final float right = layout.getPrimaryHorizontal(endOffset)
                        + (layout.getParagraphDirection(endLine) * paddingHorizontal);

                final float top = getLineTop(layout, startLine, paddingVertical);
                final float bottom = getLineBottom(layout, endLine, paddingVertical);

                Debug.i(new RectF(left, top, right, bottom).toShortString());

                if (startLine == endLine) {
                    canvas.drawRect(left, top, right, bottom, paint);
                } else {
                    // draw first line (start until the lineEnd)
                    // draw everything in-between (startLine - endLine)
                    // draw last line (lineStart until the end

                    canvas.drawRect(
                            left,
                            top,
                            layout.getLineRight(startLine),
                            getLineBottom(layout, startLine, paddingVertical),
                            paint
                    );

                    for (int line = startLine + 1; line < endLine; line++) {
                        canvas.drawRect(
                                layout.getLineLeft(line),
                                getLineTop(layout, line, paddingVertical),
                                layout.getLineRight(line),
                                getLineBottom(layout, line, paddingVertical),
                                paint
                        );
                    }

                    canvas.drawRect(
                            layout.getLineLeft(endLine),
                            getLineTop(layout, endLine, paddingVertical),
                            right,
                            getLineBottom(layout, endLine, paddingVertical),
                            paint
                    );
                }
            }
        }
    } finally {
        canvas.restoreToCount(save);
    }
}