Bug 1931447 - Use MOZ_DEFINE_ENUM_CLASS_WITH_BASE_AND_TOSTRING for some scroll related enums. r=botond

Differential Revision: https://phabricator.services.mozilla.com/D229065

layout/base/ScrollTypes.h

@@ -5,6 +5,7 @@
 #ifndef mozilla_ScrollTypes_h
 #define mozilla_ScrollTypes_h
 
+#include "mozilla/DefineEnum.h"
 #include "mozilla/TypedEnumBits.h"
 
 // Types used in main-thread scrolling interfaces such as ScrollContainerFrame.
@@ -41,7 +42,9 @@ namespace mozilla {
  * scroll is already in progress, the |SmoothMsd| scroll is interrupted without
  * first scrolling to the destination.
  */
-enum class ScrollMode { Instant, Smooth, SmoothMsd, Normal };
+MOZ_DEFINE_ENUM_CLASS_WITH_BASE_AND_TOSTRING(ScrollMode, uint8_t,
+                                             (Instant, Smooth, SmoothMsd,
+                                              Normal));
 
 /**
  * When scrolling by a relative amount, we can choose various units.

layout/generic/ScrollOrigin.h

@@ -5,61 +5,65 @@
 #ifndef mozilla_ScrollOrigin_h_
 #define mozilla_ScrollOrigin_h_
 
+#include "mozilla/DefineEnum.h"
+
 namespace mozilla {
 
 // A scroll origin is a bit of a combination of "what part of the code caused
 // this scroll" and "what special properties does this scroll have, in the
 // context of what caused it". See specific comments below.
-enum class ScrollOrigin : uint8_t {
-  // This is used as an initial value for the "LastScrollOrigin" property on
-  // scrollable frames. It is not intended to be an actual scroll origin, but
-  // a sentinel value that indicates that there was no "last scroll". It is
-  // used similarly for the "LastSmoothScrollOrigin" property, to indicate
-  // no smooth scroll is in progress.
-  None,
+MOZ_DEFINE_ENUM_CLASS_WITH_BASE_AND_TOSTRING(
+    ScrollOrigin, uint8_t,
+    (
+        // This is used as an initial value for the "LastScrollOrigin" property
+        // on scrollable frames. It is not intended to be an actual scroll
+        // origin, but a sentinel value that indicates that there was no "last
+        // scroll". It is used similarly for the "LastSmoothScrollOrigin"
+        // property, to indicate no smooth scroll is in progress.
+        None,
 
-  // This is a default value that we use when we don't know of a more specific
-  // value that we can use.
-  NotSpecified,
-  // The scroll came from APZ code.
-  Apz,
-  // The scroll came from an attempt at restoring a scroll position saved in
-  // the bfcache or history.
-  Restore,
-  // The scroll came from a "relative" scroll method like ScrollBy, where the
-  // scroll destination is indicated by a delta from the current position
-  // instead of an absolute value.
-  Relative,
-  // The scroll came from an attempt by the main thread to re-clamp the scroll
-  // position after a reflow.
-  Clamp,
+        // This is a default value that we use when we don't know of a more
+        // specific value that we can use.
+        NotSpecified,
+        // The scroll came from APZ code.
+        Apz,
+        // The scroll came from an attempt at restoring a scroll position saved
+        // in the bfcache or history.
+        Restore,
+        // The scroll came from a "relative" scroll method like ScrollBy, where
+        // the scroll destination is indicated by a delta from the current
+        // position instead of an absolute value.
+        Relative,
+        // The scroll came from an attempt by the main thread to re-clamp the
+        // scroll position after a reflow.
+        Clamp,
 
-  // The following scroll origins also are associated with prefs of the form
-  //   general.smoothScroll.<origin>(.*)
-  // e.g. general.smoothScroll.lines indicates whether or not a scroll with
-  // origin Lines will be animated smoothly, and e.g. subprefs like
-  // general.smoothScroll.lines.durationMinMS control some of the animation
-  // timing behavior.
+        // The following scroll origins also are associated with prefs of the
+        // form
+        //   general.smoothScroll.<origin>(.*)
+        // e.g. general.smoothScroll.lines indicates whether or not a scroll
+        // with origin Lines will be animated smoothly, and e.g. subprefs like
+        // general.smoothScroll.lines.durationMinMS control some of the
+        // animation timing behavior.
 
-  // The scroll came from some sort of input that's not one of the above or
-  // below values. Generally this means it came from a content-exposed API,
-  // like window.scrollTo, but may also be from other sources that don't need
-  // any particular special handling.
-  Other,
-  // The scroll was originated by pixel-scrolling input device (e.g. precision
-  // mouse wheel).
-  Pixels,
-  // The scroll was originated by a line-scrolling input device (e.g. up/down
-  // keyboard buttons).
-  Lines,
-  // The scroll was originated by a page-scrolling input device (e.g. pgup/
-  // pgdn keyboard buttons).
-  Pages,
-  // The scroll was originated by a mousewheel that scrolls by lines.
-  MouseWheel,
-  // The scroll was originated by moving the scrollbars.
-  Scrollbars,
-};
+        // The scroll came from some sort of input that's not one of the above
+        // or below values. Generally this means it came from a content-exposed
+        // API, like window.scrollTo, but may also be from other sources that
+        // don't need any particular special handling.
+        Other,
+        // The scroll was originated by pixel-scrolling input device (e.g.
+        // precision mouse wheel).
+        Pixels,
+        // The scroll was originated by a line-scrolling input device (e.g.
+        // up/down keyboard buttons).
+        Lines,
+        // The scroll was originated by a page-scrolling input device (e.g.
+        // pgup/ pgdn keyboard buttons).
+        Pages,
+        // The scroll was originated by a mousewheel that scrolls by lines.
+        MouseWheel,
+        // The scroll was originated by moving the scrollbars.
+        Scrollbars));
 
 }  // namespace mozilla
 

layout/generic/ScrollPositionUpdate.cpp

@@ -128,10 +128,9 @@ CSSPoint ScrollPositionUpdate::GetDelta() const {
 
 std::ostream& operator<<(std::ostream& aStream,
                          const ScrollPositionUpdate& aUpdate) {
-  aStream << "{ gen=" << aUpdate.mScrollGeneration
-          << ", type=" << (int)aUpdate.mType
-          << ", mode=" << (int)aUpdate.mScrollMode
-          << ", origin=" << (int)aUpdate.mScrollOrigin
+  aStream << "{ gen=" << aUpdate.mScrollGeneration << ", type=" << aUpdate.mType
+          << ", mode=" << aUpdate.mScrollMode
+          << ", origin=" << aUpdate.mScrollOrigin
           << ", dst=" << aUpdate.mDestination << ", src=" << aUpdate.mSource
           << ", delta=" << aUpdate.mDelta
           << ", triggered by script=" << aUpdate.WasTriggeredByScript() << " }";

layout/generic/ScrollPositionUpdate.h

@@ -9,6 +9,7 @@
 #include <iosfwd>
 
 #include "nsPoint.h"
+#include "mozilla/DefineEnum.h"
 #include "mozilla/ScrollGeneration.h"
 #include "mozilla/ScrollOrigin.h"
 #include "mozilla/ScrollSnapTargetId.h"
@@ -22,19 +23,20 @@ struct ParamTraits;
 
 namespace mozilla {
 
-enum class ScrollUpdateType {
-  // A scroll update to a specific destination, regardless of the current
-  // scroll position.
-  Absolute,
-  // A scroll update by a specific amount, based off a given starting scroll
-  // position. XXX Fold this into PureRelative, it should be relatively
-  // straightforward after bug 1655733.
-  Relative,
-  // A scroll update by a specific amount, where only the delta is provided.
-  // The delta should be applied to whatever the current scroll position is
-  // on the receiver side.
-  PureRelative,
-};
+MOZ_DEFINE_ENUM_CLASS_WITH_BASE_AND_TOSTRING(
+    ScrollUpdateType, uint8_t,
+    (
+        // A scroll update to a specific destination, regardless of the current
+        // scroll position.
+        Absolute,
+        // A scroll update by a specific amount, based off a given starting
+        // scroll position. XXX Fold this into PureRelative, it should be
+        // relatively straightforward after bug 1655733.
+        Relative,
+        // A scroll update by a specific amount, where only the delta is
+        // provided. The delta should be applied to whatever the current scroll
+        // position is on the receiver side.
+        PureRelative));
 
 enum class ScrollTriggeredByScript : bool { No, Yes };