#ifndef ScrollTypes_h
#define ScrollTypes_h
#include <cstdint>
#include <wtf/Assertions.h>
namespace WebCore {
enum ScrollDirection : uint8_t {
ScrollUp,
ScrollDown,
ScrollLeft,
ScrollRight
};
enum ScrollLogicalDirection : uint8_t {
ScrollBlockDirectionBackward,
ScrollBlockDirectionForward,
ScrollInlineDirectionBackward,
ScrollInlineDirectionForward
};
inline ScrollDirection logicalToPhysical(ScrollLogicalDirection direction, bool isVertical, bool isFlipped)
{
switch (direction) {
case ScrollBlockDirectionBackward: {
if (isVertical) {
if (!isFlipped)
return ScrollUp;
return ScrollDown;
} else {
if (!isFlipped)
return ScrollLeft;
return ScrollRight;
}
break;
}
case ScrollBlockDirectionForward: {
if (isVertical) {
if (!isFlipped)
return ScrollDown;
return ScrollUp;
} else {
if (!isFlipped)
return ScrollRight;
return ScrollLeft;
}
break;
}
case ScrollInlineDirectionBackward: {
if (isVertical) {
if (!isFlipped)
return ScrollLeft;
return ScrollRight;
} else {
if (!isFlipped)
return ScrollUp;
return ScrollDown;
}
break;
}
case ScrollInlineDirectionForward: {
if (isVertical) {
if (!isFlipped)
return ScrollRight;
return ScrollLeft;
} else {
if (!isFlipped)
return ScrollDown;
return ScrollUp;
}
break;
}
default:
ASSERT_NOT_REACHED();
break;
}
return ScrollUp;
}
enum ScrollGranularity : uint8_t {
ScrollByLine,
ScrollByPage,
ScrollByDocument,
ScrollByPixel,
ScrollByPrecisePixel
};
enum ScrollElasticity {
ScrollElasticityAutomatic,
ScrollElasticityNone,
ScrollElasticityAllowed
};
enum ScrollbarOrientation { HorizontalScrollbar, VerticalScrollbar };
enum ScrollbarMode { ScrollbarAuto, ScrollbarAlwaysOff, ScrollbarAlwaysOn };
enum ScrollbarControlSize { RegularScrollbar, SmallScrollbar };
enum class ScrollbarExpansionState { Regular, Expanded };
enum class ScrollEventAxis { Horizontal, Vertical };
typedef unsigned ScrollbarControlState;
enum ScrollbarControlStateMask {
ActiveScrollbarState = 1,
EnabledScrollbarState = 1 << 1,
PressedScrollbarState = 1 << 2
};
enum ScrollbarPart {
NoPart = 0,
BackButtonStartPart = 1,
ForwardButtonStartPart = 1 << 1,
BackTrackPart = 1 << 2,
ThumbPart = 1 << 3,
ForwardTrackPart = 1 << 4,
BackButtonEndPart = 1 << 5,
ForwardButtonEndPart = 1 << 6,
ScrollbarBGPart = 1 << 7,
TrackBGPart = 1 << 8,
AllParts = 0xffffffff
};
enum ScrollbarButtonsPlacement {
ScrollbarButtonsNone,
ScrollbarButtonsSingle,
ScrollbarButtonsDoubleStart,
ScrollbarButtonsDoubleEnd,
ScrollbarButtonsDoubleBoth
};
enum class ScrollbarStyle {
AlwaysVisible,
Overlay
};
enum ScrollbarOverlayStyle {
ScrollbarOverlayStyleDefault,
ScrollbarOverlayStyleDark,
ScrollbarOverlayStyleLight
};
typedef unsigned ScrollbarControlPartMask;
enum ScrollPinningBehavior {
DoNotPin,
PinToTop,
PinToBottom
};
enum class ScrollClamping {
Unclamped,
Clamped
};
enum ScrollBehaviorForFixedElements {
StickToDocumentBounds,
StickToViewportBounds
};
enum class ScrollbarButtonPressAction {
None,
CenterOnThumb,
StartDrag,
Scroll
};
}
#endif