Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef ScrollbarStyles_h
       7             : #define ScrollbarStyles_h
       8             : 
       9             : #include <stdint.h>
      10             : #include "nsStyleConsts.h" // for NS_STYLE_SCROLL_SNAP_*
      11             : #include "nsStyleCoord.h" // for nsStyleCoord
      12             : #include "mozilla/dom/WindowBinding.h"
      13             : 
      14             : // Forward declarations
      15             : struct nsStyleDisplay;
      16             : 
      17             : namespace mozilla {
      18             : 
      19        1596 : struct ScrollbarStyles
      20             : {
      21             :   // Always one of NS_STYLE_OVERFLOW_SCROLL, NS_STYLE_OVERFLOW_HIDDEN,
      22             :   // or NS_STYLE_OVERFLOW_AUTO.
      23             :   uint8_t mHorizontal;
      24             :   uint8_t mVertical;
      25             :   // Always one of NS_STYLE_SCROLL_BEHAVIOR_AUTO or
      26             :   // NS_STYLE_SCROLL_BEHAVIOR_SMOOTH
      27             :   uint8_t mScrollBehavior;
      28             :   // Always one of NS_STYLE_SCROLL_SNAP_NONE, NS_STYLE_SCROLL_SNAP_MANDATORY,
      29             :   // or NS_STYLE_SCROLL_SNAP_PROXIMITY.
      30             :   uint8_t mScrollSnapTypeX;
      31             :   uint8_t mScrollSnapTypeY;
      32             :   nsStyleCoord mScrollSnapPointsX;
      33             :   nsStyleCoord mScrollSnapPointsY;
      34             :   nsStyleCoord::CalcValue mScrollSnapDestinationX;
      35             :   nsStyleCoord::CalcValue mScrollSnapDestinationY;
      36             : 
      37          54 :   ScrollbarStyles(uint8_t aH, uint8_t aV)
      38          54 :     : mHorizontal(aH), mVertical(aV),
      39             :       mScrollBehavior(NS_STYLE_SCROLL_BEHAVIOR_AUTO),
      40             :       mScrollSnapTypeX(NS_STYLE_SCROLL_SNAP_TYPE_NONE),
      41             :       mScrollSnapTypeY(NS_STYLE_SCROLL_SNAP_TYPE_NONE),
      42             :       mScrollSnapPointsX(nsStyleCoord(eStyleUnit_None)),
      43          54 :       mScrollSnapPointsY(nsStyleCoord(eStyleUnit_None)) {
      44             : 
      45          54 :     mScrollSnapDestinationX.mPercent = 0;
      46          54 :     mScrollSnapDestinationX.mLength = nscoord(0.0f);
      47          54 :     mScrollSnapDestinationX.mHasPercent = false;
      48          54 :     mScrollSnapDestinationY.mPercent = 0;
      49          54 :     mScrollSnapDestinationY.mLength = nscoord(0.0f);
      50          54 :     mScrollSnapDestinationY.mHasPercent = false;
      51          54 :   }
      52             : 
      53             :   explicit ScrollbarStyles(const nsStyleDisplay* aDisplay);
      54             :   ScrollbarStyles(uint8_t aH, uint8_t aV, const nsStyleDisplay* aDisplay);
      55             :   bool operator==(const ScrollbarStyles& aStyles) const {
      56             :     return aStyles.mHorizontal == mHorizontal && aStyles.mVertical == mVertical &&
      57             :            aStyles.mScrollBehavior == mScrollBehavior &&
      58             :            aStyles.mScrollSnapTypeX == mScrollSnapTypeX &&
      59             :            aStyles.mScrollSnapTypeY == mScrollSnapTypeY &&
      60             :            aStyles.mScrollSnapPointsX == mScrollSnapPointsX &&
      61             :            aStyles.mScrollSnapPointsY == mScrollSnapPointsY &&
      62             :            aStyles.mScrollSnapDestinationX == mScrollSnapDestinationX &&
      63             :            aStyles.mScrollSnapDestinationY == mScrollSnapDestinationY;
      64             :   }
      65             :   bool operator!=(const ScrollbarStyles& aStyles) const {
      66             :     return !(*this == aStyles);
      67             :   }
      68           0 :   bool IsHiddenInBothDirections() const {
      69           0 :     return mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
      70           0 :            mVertical == NS_STYLE_OVERFLOW_HIDDEN;
      71             :   }
      72           0 :   bool IsSmoothScroll(dom::ScrollBehavior aBehavior) const {
      73           0 :     return aBehavior == dom::ScrollBehavior::Smooth ||
      74           0 :              (aBehavior == dom::ScrollBehavior::Auto &&
      75           0 :                mScrollBehavior == NS_STYLE_SCROLL_BEHAVIOR_SMOOTH);
      76             :   }
      77             : };
      78             : 
      79             : } // namespace mozilla
      80             : 
      81             : #endif