Beispiel #1
0
void RenderTextTrackCue::repositionCueSnapToLinesSet()
{
    InlineFlowBox* firstLineBox;
    LayoutUnit step;
    LayoutUnit position;
    if (!initializeLayoutParameters(firstLineBox, step, position))
        return;

    bool switched;
    placeBoxInDefaultPosition(position, switched);

    // 11. Step loop: If none of the boxes in boxes would overlap any of the boxes
    // in output and all the boxes in output are within the video's rendering area
    // then jump to the step labeled done positioning.
    while (isOutside() || isOverlapping()) {
        if (!shouldSwitchDirection(firstLineBox, step))
            // 13. Move all the boxes in boxes ...
            // 14. Jump back to the step labeled step loop.
            moveBoxesByStep(step);
        else if (!switchDirection(switched, step))
            break;

        // 19. Jump back to the step labeled step loop.
    }

    // Acommodate extra top and bottom padding, border or margin.
    // Note: this is supported only for internal UA styling, not through the cue selector.
    if (hasInlineDirectionBordersPaddingOrMargin())
        moveIfNecessaryToKeepWithinContainer();
}
Beispiel #2
0
void RenderVTTCue::repositionCueSnapToLinesSet()
{
    InlineFlowBox* firstLineBox;
    LayoutUnit step;
    LayoutUnit position;

    if (!findFirstLineBox(firstLineBox))
        return;

    if (!initializeLayoutParameters(firstLineBox, step, position))
        return;

    bool switched;
    placeBoxInDefaultPosition(position, switched);

    // 11. Step loop: If none of the boxes in boxes would overlap any of the boxes
    // in output and all the boxes in output are within the video's rendering area
    // then jump to the step labeled done positioning.
    while (isOutside() || isOverlapping()) {
        if (!shouldSwitchDirection(firstLineBox, step)) {
            // 13. Move all the boxes in boxes ...
            // 14. Jump back to the step labeled step loop.
            moveBoxesByStep(step);
        } else if (!switchDirection(switched, step)) {
            break;
        }

        // 19. Jump back to the step labeled step loop.
    }

    // Acommodate extra top and bottom padding, border or margin.
    // Note: this is supported only for internal UA styling, not through the cue selector.
    if (hasInlineDirectionBordersPaddingOrMargin()) {
        IntRect containerRect = containingBlock()->absoluteBoundingBoxRect();
        IntRect cueRect = absoluteBoundingBoxRect();

        int topOverflow = cueRect.y() - containerRect.y();
        int bottomOverflow = containerRect.y() + containerRect.height() - cueRect.y() - cueRect.height();

        int adjustment = 0;
        if (topOverflow < 0)
            adjustment = -topOverflow;
        else if (bottomOverflow < 0)
            adjustment = bottomOverflow;

        if (adjustment)
            setY(y() + adjustment);
    }
}