tor-browser

The Tor Browser
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ScrollableLayerGuid.cpp (2744B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "ScrollableLayerGuid.h"
      8 
      9 #include <ostream>
     10 #include "mozilla/HashFunctions.h"  // for HashGeneric
     11 #include "mozilla/IntegerPrintfMacros.h"
     12 #include "nsPrintfCString.h"  // for nsPrintfCString
     13 
     14 namespace mozilla {
     15 namespace layers {
     16 
     17 ScrollableLayerGuid::ScrollableLayerGuid()
     18    : mLayersId{0}, mPresShellId(0), mScrollId(0) {}
     19 
     20 ScrollableLayerGuid::ScrollableLayerGuid(LayersId aLayersId,
     21                                         uint32_t aPresShellId,
     22                                         ViewID aScrollId)
     23    : mLayersId(aLayersId), mPresShellId(aPresShellId), mScrollId(aScrollId) {}
     24 
     25 bool ScrollableLayerGuid::operator==(const ScrollableLayerGuid& other) const {
     26  return mLayersId == other.mLayersId && mPresShellId == other.mPresShellId &&
     27         mScrollId == other.mScrollId;
     28 }
     29 
     30 bool ScrollableLayerGuid::operator!=(const ScrollableLayerGuid& other) const {
     31  return !(*this == other);
     32 }
     33 
     34 bool ScrollableLayerGuid::operator<(const ScrollableLayerGuid& other) const {
     35  if (mLayersId < other.mLayersId) {
     36    return true;
     37  }
     38  if (mLayersId == other.mLayersId) {
     39    if (mPresShellId < other.mPresShellId) {
     40      return true;
     41    }
     42    if (mPresShellId == other.mPresShellId) {
     43      return mScrollId < other.mScrollId;
     44    }
     45  }
     46  return false;
     47 }
     48 
     49 std::ostream& operator<<(std::ostream& aOut, const ScrollableLayerGuid& aGuid) {
     50  return aOut << nsPrintfCString("{ l=0x%" PRIx64 ", p=%u, v=%" PRIu64 " }",
     51                                 uint64_t(aGuid.mLayersId), aGuid.mPresShellId,
     52                                 aGuid.mScrollId)
     53                     .get();
     54 }
     55 
     56 bool ScrollableLayerGuid::EqualsIgnoringPresShell(
     57    const ScrollableLayerGuid& aA, const ScrollableLayerGuid& aB) {
     58  return aA.mLayersId == aB.mLayersId && aA.mScrollId == aB.mScrollId;
     59 }
     60 
     61 std::size_t ScrollableLayerGuid::HashFn::operator()(
     62    const ScrollableLayerGuid& aGuid) const {
     63  return HashGeneric(uint64_t(aGuid.mLayersId), aGuid.mPresShellId,
     64                     aGuid.mScrollId);
     65 }
     66 
     67 std::size_t ScrollableLayerGuid::HashIgnoringPresShellFn::operator()(
     68    const ScrollableLayerGuid& aGuid) const {
     69  return HashGeneric(uint64_t(aGuid.mLayersId), aGuid.mScrollId);
     70 }
     71 
     72 bool ScrollableLayerGuid::EqualIgnoringPresShellFn::operator()(
     73    const ScrollableLayerGuid& lhs, const ScrollableLayerGuid& rhs) const {
     74  return EqualsIgnoringPresShell(lhs, rhs);
     75 }
     76 
     77 }  // namespace layers
     78 }  // namespace mozilla