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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com) | 4 * (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com) |
5 * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com) | 5 * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com) |
6 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserv
ed. | 6 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserv
ed. |
7 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved. | 7 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved. |
8 * | 8 * |
9 * This library is free software; you can redistribute it and/or | 9 * This library is free software; you can redistribute it and/or |
10 * modify it under the terms of the GNU Library General Public | 10 * modify it under the terms of the GNU Library General Public |
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702 } | 702 } |
703 | 703 |
704 if (!isHorizontalWritingMode() && style()->overflowX() == OSCROLL) { | 704 if (!isHorizontalWritingMode() && style()->overflowX() == OSCROLL) { |
705 ASSERT(layer()->scrollableArea() && layer()->scrollableArea()->hasHorizo
ntalScrollbar()); | 705 ASSERT(layer()->scrollableArea() && layer()->scrollableArea()->hasHorizo
ntalScrollbar()); |
706 return horizontalScrollbarHeight(); | 706 return horizontalScrollbarHeight(); |
707 } | 707 } |
708 | 708 |
709 return 0; | 709 return 0; |
710 } | 710 } |
711 | 711 |
712 bool LayoutBox::scroll(ScrollDirection direction, ScrollGranularity granularity,
float delta) | 712 ScrollResultOneDimensional LayoutBox::scroll(ScrollDirection direction, ScrollGr
anularity granularity, float delta) |
713 { | 713 { |
714 // Presumably the same issue as in setScrollTop. See crbug.com/343132. | 714 // Presumably the same issue as in setScrollTop. See crbug.com/343132. |
715 DisableCompositingQueryAsserts disabler; | 715 DisableCompositingQueryAsserts disabler; |
716 | 716 |
717 // Logical scroll is a higher level concept, all directions by here must be
physical | 717 // Logical scroll is a higher level concept, all directions by here must be
physical |
718 ASSERT(!isLogical(direction)); | 718 ASSERT(!isLogical(direction)); |
719 | 719 |
720 if (!layer() || !layer()->scrollableArea()) | 720 if (!layer() || !layer()->scrollableArea()) |
721 return false; | 721 return ScrollResultOneDimensional(false); |
722 | 722 |
723 return layer()->scrollableArea()->scroll(direction, granularity, delta); | 723 return layer()->scrollableArea()->scroll(direction, granularity, delta); |
724 } | 724 } |
725 | 725 |
726 bool LayoutBox::canBeScrolledAndHasScrollableArea() const | 726 bool LayoutBox::canBeScrolledAndHasScrollableArea() const |
727 { | 727 { |
728 return canBeProgramaticallyScrolled() && (pixelSnappedScrollHeight() != pixe
lSnappedClientHeight() || pixelSnappedScrollWidth() != pixelSnappedClientWidth()
); | 728 return canBeProgramaticallyScrolled() && (pixelSnappedScrollHeight() != pixe
lSnappedClientHeight() || pixelSnappedScrollWidth() != pixelSnappedClientWidth()
); |
729 } | 729 } |
730 | 730 |
731 bool LayoutBox::canBeProgramaticallyScrolled() const | 731 bool LayoutBox::canBeProgramaticallyScrolled() const |
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4754 return true; | 4754 return true; |
4755 | 4755 |
4756 // Our fill layers are ok. Let's check border. | 4756 // Our fill layers are ok. Let's check border. |
4757 if (style()->hasBorder() && canRenderBorderImage()) | 4757 if (style()->hasBorder() && canRenderBorderImage()) |
4758 return true; | 4758 return true; |
4759 | 4759 |
4760 return false; | 4760 return false; |
4761 } | 4761 } |
4762 | 4762 |
4763 } // namespace blink | 4763 } // namespace blink |
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