layout/style/GeckoBindings.h

   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 /* FFI functions for Servo to call into Gecko */
   8
   9 #ifndef mozilla_GeckoBindings_h
  10 #define mozilla_GeckoBindings_h
  11
  12 #include <stdint.h>
  13
  14 #include "mozilla/ServoTypes.h"
  15 #include "mozilla/ServoBindingTypes.h"
  16 #include "mozilla/css/DocumentMatchingFunction.h"
  17 #include "mozilla/css/SheetLoadData.h"
  18 #include "mozilla/EffectCompositor.h"
  19 #include "mozilla/ComputedTimingFunction.h"
  20 #include "mozilla/PreferenceSheet.h"
  21 #include "nsStyleStruct.h"
  22
  23 class nsAtom;
  24 class nsIURI;
  25 class nsSimpleContentList;
  26 struct nsFont;
  27 class ServoComputedData;
  28
  29 namespace mozilla {
  30 class ComputedStyle;
  31 class SeenPtrs;
  32 class ServoElementSnapshot;
  33 class ServoElementSnapshotTable;
  34 class SharedFontList;
  35 class StyleSheet;
  36 enum class PseudoStyleType : uint8_t;
  37 enum class PointerCapabilities : uint8_t;
  38 enum class UpdateAnimationsTasks : uint8_t;
  39 struct FontFamilyName;
  40 struct Keyframe;
  41
  42 namespace css {
  43 class LoaderReusableStyleSheets;
  44 }
  45 }  // namespace mozilla
  46
  47 #ifdef NIGHTLY_BUILD
  48 const bool GECKO_IS_NIGHTLY = true;
  49 #else
  50 const bool GECKO_IS_NIGHTLY = false;
  51 #endif
  52
  53 #define NS_DECL_THREADSAFE_FFI_REFCOUNTING(class_, name_)  \
  54   void Gecko_AddRef##name_##ArbitraryThread(class_* aPtr); \
  55   void Gecko_Release##name_##ArbitraryThread(class_* aPtr);
  56 #define NS_IMPL_THREADSAFE_FFI_REFCOUNTING(class_, name_)                      \
  57   static_assert(class_::HasThreadSafeRefCnt::value,                            \
  58                 "NS_DECL_THREADSAFE_FFI_REFCOUNTING can only be used with "    \
  59                 "classes that have thread-safe refcounting");                  \
  60   void Gecko_AddRef##name_##ArbitraryThread(class_* aPtr) { NS_ADDREF(aPtr); } \
  61   void Gecko_Release##name_##ArbitraryThread(class_* aPtr) { NS_RELEASE(aPtr); }
  62
  63 extern "C" {
  64
  65 NS_DECL_THREADSAFE_FFI_REFCOUNTING(nsIURI, nsIURI);
  66
  67 // Debugging stuff.
  68 void Gecko_Element_DebugListAttributes(const mozilla::dom::Element*,
  69                                        nsCString*);
  70
  71 void Gecko_Snapshot_DebugListAttributes(const mozilla::ServoElementSnapshot*,
  72                                         nsCString*);
  73
  74 bool Gecko_IsSignificantChild(const nsINode*, bool whitespace_is_significant);
  75
  76 const nsINode* Gecko_GetLastChild(const nsINode*);
  77 const nsINode* Gecko_GetPreviousSibling(const nsINode*);
  78
  79 const nsINode* Gecko_GetFlattenedTreeParentNode(const nsINode*);
  80 const mozilla::dom::Element* Gecko_GetBeforeOrAfterPseudo(
  81     const mozilla::dom::Element*, bool is_before);
  82 const mozilla::dom::Element* Gecko_GetMarkerPseudo(
  83     const mozilla::dom::Element*);
  84
  85 nsTArray<nsIContent*>* Gecko_GetAnonymousContentForElement(
  86     const mozilla::dom::Element*);
  87 void Gecko_DestroyAnonymousContentList(nsTArray<nsIContent*>* anon_content);
  88
  89 const nsTArray<RefPtr<nsINode>>* Gecko_GetAssignedNodes(
  90     const mozilla::dom::Element*);
  91
  92 void Gecko_ComputedStyle_Init(mozilla::ComputedStyle* context,
  93                               const ServoComputedData* values,
  94                               mozilla::PseudoStyleType pseudo_type);
  95
  96 void Gecko_ComputedStyle_Destroy(mozilla::ComputedStyle* context);
  97
  98 // By default, Servo walks the DOM by traversing the siblings of the DOM-view
  99 // first child. This generally works, but misses anonymous children, which we
 100 // want to traverse during styling. To support these cases, we create an
 101 // optional stack-allocated iterator in aIterator for nodes that need it.
 102 void Gecko_ConstructStyleChildrenIterator(const mozilla::dom::Element*,
 103                                           mozilla::dom::StyleChildrenIterator*);
 104
 105 void Gecko_DestroyStyleChildrenIterator(mozilla::dom::StyleChildrenIterator*);
 106
 107 const nsINode* Gecko_GetNextStyleChild(mozilla::dom::StyleChildrenIterator*);
 108
 109 nsAtom* Gecko_Element_ImportedPart(const nsAttrValue*, nsAtom*);
 110 nsAtom** Gecko_Element_ExportedParts(const nsAttrValue*, nsAtom*,
 111                                      size_t* aOutLength);
 112
 113 NS_DECL_THREADSAFE_FFI_REFCOUNTING(mozilla::css::SheetLoadDataHolder,
 114                                    SheetLoadDataHolder);
 115
 116 void Gecko_StyleSheet_FinishAsyncParse(
 117     mozilla::css::SheetLoadDataHolder* data,
 118     mozilla::StyleStrong<RawServoStyleSheetContents> sheet_contents,
 119     mozilla::StyleOwnedOrNull<StyleUseCounters> use_counters);
 120
 121 mozilla::StyleSheet* Gecko_LoadStyleSheet(
 122     mozilla::css::Loader* loader, mozilla::StyleSheet* parent,
 123     mozilla::css::SheetLoadData* parent_load_data,
 124     mozilla::css::LoaderReusableStyleSheets* reusable_sheets,
 125     const mozilla::StyleCssUrl* url,
 126     mozilla::StyleStrong<RawServoMediaList> media_list);
 127
 128 void Gecko_LoadStyleSheetAsync(mozilla::css::SheetLoadDataHolder* parent_data,
 129                                const mozilla::StyleCssUrl* url,
 130                                mozilla::StyleStrong<RawServoMediaList>,
 131                                mozilla::StyleStrong<RawServoImportRule>);
 132
 133 // Selector Matching.
 134 uint64_t Gecko_ElementState(const mozilla::dom::Element*);
 135 bool Gecko_IsRootElement(const mozilla::dom::Element*);
 136
 137 bool Gecko_MatchLang(const mozilla::dom::Element*, nsAtom* override_lang,
 138                      bool has_override_lang, const char16_t* value);
 139
 140 nsAtom* Gecko_GetXMLLangValue(const mozilla::dom::Element*);
 141
 142 mozilla::dom::Document::DocumentTheme Gecko_GetDocumentLWTheme(
 143     const mozilla::dom::Document*);
 144
 145 const mozilla::PreferenceSheet::Prefs* Gecko_GetPrefSheetPrefs(
 146     const mozilla::dom::Document*);
 147
 148 bool Gecko_IsTableBorderNonzero(const mozilla::dom::Element* element);
 149 bool Gecko_IsBrowserFrame(const mozilla::dom::Element* element);
 150
 151 // Attributes.
 152 #define SERVO_DECLARE_ELEMENT_ATTR_MATCHING_FUNCTIONS(prefix_, implementor_)   \
 153   nsAtom* prefix_##LangValue(implementor_ element);                            \
 154   bool prefix_##HasAttr(implementor_ element, nsAtom* ns, nsAtom* name);       \
 155   bool prefix_##AttrEquals(implementor_ element, nsAtom* ns, nsAtom* name,     \
 156                            nsAtom* str, bool ignoreCase);                      \
 157   bool prefix_##AttrDashEquals(implementor_ element, nsAtom* ns, nsAtom* name, \
 158                                nsAtom* str, bool ignore_case);                 \
 159   bool prefix_##AttrIncludes(implementor_ element, nsAtom* ns, nsAtom* name,   \
 160                              nsAtom* str, bool ignore_case);                   \
 161   bool prefix_##AttrHasSubstring(implementor_ element, nsAtom* ns,             \
 162                                  nsAtom* name, nsAtom* str, bool ignore_case); \
 163   bool prefix_##AttrHasPrefix(implementor_ element, nsAtom* ns, nsAtom* name,  \
 164                               nsAtom* str, bool ignore_case);                  \
 165   bool prefix_##AttrHasSuffix(implementor_ element, nsAtom* ns, nsAtom* name,  \
 166                               nsAtom* str, bool ignore_case);
 167
 168 bool Gecko_AssertClassAttrValueIsSane(const nsAttrValue*);
 169 const nsAttrValue* Gecko_GetSVGAnimatedClass(const mozilla::dom::Element*);
 170
 171 SERVO_DECLARE_ELEMENT_ATTR_MATCHING_FUNCTIONS(Gecko_,
 172                                               const mozilla::dom::Element*)
 173
 174 SERVO_DECLARE_ELEMENT_ATTR_MATCHING_FUNCTIONS(
 175     Gecko_Snapshot, const mozilla::ServoElementSnapshot*)
 176
 177 #undef SERVO_DECLARE_ELEMENT_ATTR_MATCHING_FUNCTIONS
 178
 179 // Style attributes.
 180 const mozilla::StyleStrong<RawServoDeclarationBlock>*
 181 Gecko_GetStyleAttrDeclarationBlock(const mozilla::dom::Element* element);
 182
 183 void Gecko_UnsetDirtyStyleAttr(const mozilla::dom::Element* element);
 184
 185 const mozilla::StyleStrong<RawServoDeclarationBlock>*
 186 Gecko_GetHTMLPresentationAttrDeclarationBlock(
 187     const mozilla::dom::Element* element);
 188
 189 const mozilla::StyleStrong<RawServoDeclarationBlock>*
 190 Gecko_GetExtraContentStyleDeclarations(const mozilla::dom::Element* element);
 191
 192 const mozilla::StyleStrong<RawServoDeclarationBlock>*
 193 Gecko_GetUnvisitedLinkAttrDeclarationBlock(
 194     const mozilla::dom::Element* element);
 195
 196 const mozilla::StyleStrong<RawServoDeclarationBlock>*
 197 Gecko_GetVisitedLinkAttrDeclarationBlock(const mozilla::dom::Element* element);
 198
 199 const mozilla::StyleStrong<RawServoDeclarationBlock>*
 200 Gecko_GetActiveLinkAttrDeclarationBlock(const mozilla::dom::Element* element);
 201
 202 // Visited handling.
 203
 204 // Returns whether visited styles are enabled for a given document.
 205 bool Gecko_VisitedStylesEnabled(const mozilla::dom::Document*);
 206
 207 // Animations
 208 bool Gecko_GetAnimationRule(
 209     const mozilla::dom::Element* aElementOrPseudo,
 210     mozilla::EffectCompositor::CascadeLevel aCascadeLevel,
 211     RawServoAnimationValueMap* aAnimationValues);
 212
 213 bool Gecko_StyleAnimationsEquals(
 214     const nsStyleAutoArray<mozilla::StyleAnimation>*,
 215     const nsStyleAutoArray<mozilla::StyleAnimation>*);
 216
 217 void Gecko_CopyAnimationNames(
 218     nsStyleAutoArray<mozilla::StyleAnimation>* aDest,
 219     const nsStyleAutoArray<mozilla::StyleAnimation>* aSrc);
 220
 221 // This function takes an already addrefed nsAtom
 222 void Gecko_SetAnimationName(mozilla::StyleAnimation* aStyleAnimation,
 223                             nsAtom* aAtom);
 224
 225 void Gecko_UpdateAnimations(const mozilla::dom::Element* aElementOrPseudo,
 226                             const mozilla::ComputedStyle* aOldComputedValues,
 227                             const mozilla::ComputedStyle* aComputedValues,
 228                             mozilla::UpdateAnimationsTasks aTasks);
 229
 230 size_t Gecko_GetAnimationEffectCount(
 231     const mozilla::dom::Element* aElementOrPseudo);
 232 bool Gecko_ElementHasAnimations(const mozilla::dom::Element* aElementOrPseudo);
 233 bool Gecko_ElementHasCSSAnimations(
 234     const mozilla::dom::Element* aElementOrPseudo);
 235 bool Gecko_ElementHasCSSTransitions(
 236     const mozilla::dom::Element* aElementOrPseudo);
 237 bool Gecko_ElementHasWebAnimations(
 238     const mozilla::dom::Element* aElementOrPseudo);
 239 size_t Gecko_ElementTransitions_Length(
 240     const mozilla::dom::Element* aElementOrPseudo);
 241
 242 nsCSSPropertyID Gecko_ElementTransitions_PropertyAt(
 243     const mozilla::dom::Element* aElementOrPseudo, size_t aIndex);
 244
 245 const RawServoAnimationValue* Gecko_ElementTransitions_EndValueAt(
 246     const mozilla::dom::Element* aElementOrPseudo, size_t aIndex);
 247
 248 double Gecko_GetProgressFromComputedTiming(const mozilla::ComputedTiming*);
 249
 250 double Gecko_GetPositionInSegment(
 251     const mozilla::AnimationPropertySegment*, double aProgress,
 252     mozilla::ComputedTimingFunction::BeforeFlag aBeforeFlag);
 253
 254 // Get servo's AnimationValue for |aProperty| from the cached base style
 255 // |aBaseStyles|.
 256 // |aBaseStyles| is nsRefPtrHashtable<nsUint32HashKey, RawServoAnimationValue>.
 257 // We use RawServoAnimationValueTableBorrowed to avoid exposing
 258 // nsRefPtrHashtable in FFI.
 259 const RawServoAnimationValue* Gecko_AnimationGetBaseStyle(
 260     const RawServoAnimationValueTable* aBaseStyles, nsCSSPropertyID aProperty);
 261
 262 void Gecko_StyleTransition_SetUnsupportedProperty(
 263     mozilla::StyleTransition* aTransition, nsAtom* aAtom);
 264
 265 // Atoms.
 266 nsAtom* Gecko_Atomize(const char* aString, uint32_t aLength);
 267 nsAtom* Gecko_Atomize16(const nsAString* aString);
 268 void Gecko_AddRefAtom(nsAtom* aAtom);
 269 void Gecko_ReleaseAtom(nsAtom* aAtom);
 270
 271 // Font style
 272 void Gecko_CopyFontFamilyFrom(nsFont* dst, const nsFont* src);
 273
 274 void Gecko_nsTArray_FontFamilyName_AppendNamed(
 275     nsTArray<mozilla::FontFamilyName>* aNames, nsAtom* aName,
 276     mozilla::StyleFontFamilyNameSyntax);
 277
 278 void Gecko_nsTArray_FontFamilyName_AppendGeneric(
 279     nsTArray<mozilla::FontFamilyName>* aNames, mozilla::StyleGenericFontFamily);
 280
 281 // Returns an already-AddRefed SharedFontList with an empty mNames array.
 282 mozilla::SharedFontList* Gecko_SharedFontList_Create();
 283
 284 size_t Gecko_SharedFontList_SizeOfIncludingThis(
 285     mozilla::SharedFontList* fontlist);
 286
 287 size_t Gecko_SharedFontList_SizeOfIncludingThisIfUnshared(
 288     mozilla::SharedFontList* fontlist);
 289
 290 NS_DECL_THREADSAFE_FFI_REFCOUNTING(mozilla::SharedFontList, SharedFontList);
 291
 292 // will not run destructors on dst, give it uninitialized memory
 293 // font_id is LookAndFeel::FontID
 294 void Gecko_nsFont_InitSystem(nsFont* dst, int32_t font_id,
 295                              const nsStyleFont* font,
 296                              const mozilla::dom::Document*);
 297
 298 void Gecko_nsFont_Destroy(nsFont* dst);
 299
 300 // The gfxFontFeatureValueSet returned from this function has zero reference.
 301 gfxFontFeatureValueSet* Gecko_ConstructFontFeatureValueSet();
 302
 303 nsTArray<uint32_t>* Gecko_AppendFeatureValueHashEntry(
 304     gfxFontFeatureValueSet* value_set, nsAtom* family, uint32_t alternate,
 305     nsAtom* name);
 306
 307 // Font variant alternates
 308 void Gecko_ClearAlternateValues(nsFont* font, size_t length);
 309
 310 void Gecko_AppendAlternateValues(nsFont* font, uint32_t alternate_name,
 311                                  nsAtom* atom);
 312
 313 void Gecko_CopyAlternateValuesFrom(nsFont* dest, const nsFont* src);
 314
 315 // Visibility style
 316 void Gecko_SetImageOrientation(nsStyleVisibility* aVisibility,
 317                                uint8_t aOrientation, bool aFlip);
 318
 319 void Gecko_SetImageOrientationAsFromImage(nsStyleVisibility* aVisibility);
 320
 321 void Gecko_CopyImageOrientationFrom(nsStyleVisibility* aDst,
 322                                     const nsStyleVisibility* aSrc);
 323
 324 // Counter style.
 325 void Gecko_CounterStyle_ToPtr(const mozilla::StyleCounterStyle*,
 326                               mozilla::CounterStylePtr*);
 327
 328 void Gecko_SetCounterStyleToNone(mozilla::CounterStylePtr*);
 329
 330 void Gecko_SetCounterStyleToString(mozilla::CounterStylePtr* ptr,
 331                                    const nsACString* symbol);
 332
 333 void Gecko_CopyCounterStyle(mozilla::CounterStylePtr* dst,
 334                             const mozilla::CounterStylePtr* src);
 335
 336 nsAtom* Gecko_CounterStyle_GetName(const mozilla::CounterStylePtr* ptr);
 337
 338 const mozilla::AnonymousCounterStyle* Gecko_CounterStyle_GetAnonymous(
 339     const mozilla::CounterStylePtr* ptr);
 340
 341 // list-style-image style.
 342 void Gecko_SetListStyleImageNone(nsStyleList* style_struct);
 343
 344 void Gecko_SetListStyleImageImageValue(
 345     nsStyleList* style_struct, const mozilla::StyleComputedImageUrl* url);
 346
 347 void Gecko_CopyListStyleImageFrom(nsStyleList* dest, const nsStyleList* src);
 348
 349 // Dirtiness tracking.
 350 void Gecko_SetNodeFlags(const nsINode* node, uint32_t flags);
 351 void Gecko_UnsetNodeFlags(const nsINode* node, uint32_t flags);
 352 void Gecko_NoteDirtyElement(const mozilla::dom::Element*);
 353 void Gecko_NoteDirtySubtreeForInvalidation(const mozilla::dom::Element*);
 354 void Gecko_NoteAnimationOnlyDirtyElement(const mozilla::dom::Element*);
 355
 356 bool Gecko_AnimationNameMayBeReferencedFromStyle(const nsPresContext*,
 357                                                  nsAtom* name);
 358
 359 // Incremental restyle.
 360 mozilla::PseudoStyleType Gecko_GetImplementedPseudo(
 361     const mozilla::dom::Element*);
 362
 363 // We'd like to return `nsChangeHint` here, but bindgen bitfield enums don't
 364 // work as return values with the Linux 32-bit ABI at the moment because
 365 // they wrap the value in a struct.
 366 uint32_t Gecko_CalcStyleDifference(const mozilla::ComputedStyle* old_style,
 367                                    const mozilla::ComputedStyle* new_style,
 368                                    bool* any_style_struct_changed,
 369                                    bool* reset_only_changed);
 370
 371 // Get an element snapshot for a given element from the table.
 372 const mozilla::ServoElementSnapshot* Gecko_GetElementSnapshot(
 373     const mozilla::ServoElementSnapshotTable* table,
 374     const mozilla::dom::Element*);
 375
 376 // Have we seen this pointer before?
 377 bool Gecko_HaveSeenPtr(mozilla::SeenPtrs* table, const void* ptr);
 378
 379 // `array` must be an nsTArray
 380 // If changing this signature, please update the
 381 // friend function declaration in nsTArray.h
 382 void Gecko_EnsureTArrayCapacity(void* array, size_t capacity, size_t elem_size);
 383
 384 // Same here, `array` must be an nsTArray<T>, for some T.
 385 //
 386 // Important note: Only valid for POD types, since destructors won't be run
 387 // otherwise. This is ensured with rust traits for the relevant structs.
 388 void Gecko_ClearPODTArray(void* array, size_t elem_size, size_t elem_align);
 389
 390 void Gecko_ResizeTArrayForStrings(nsTArray<nsString>* array, uint32_t length);
 391 void Gecko_ResizeAtomArray(nsTArray<RefPtr<nsAtom>>* array, uint32_t length);
 392
 393 void Gecko_EnsureImageLayersLength(nsStyleImageLayers* layers, size_t len,
 394                                    nsStyleImageLayers::LayerType layer_type);
 395
 396 void Gecko_EnsureStyleAnimationArrayLength(void* array, size_t len);
 397 void Gecko_EnsureStyleTransitionArrayLength(void* array, size_t len);
 398
 399 // Searches from the beginning of |keyframes| for a Keyframe object with the
 400 // specified offset and timing function. If none is found, a new Keyframe object
 401 // with the specified |offset| and |timingFunction| will be prepended to
 402 // |keyframes|.
 403 //
 404 // @param keyframes  An array of Keyframe objects, sorted by offset.
 405 //                   The first Keyframe in the array, if any, MUST have an
 406 //                   offset greater than or equal to |offset|.
 407 // @param offset  The offset to search for, or, if no suitable Keyframe is
 408 //                found, the offset to use for the created Keyframe.
 409 //                Must be a floating point number in the range [0.0, 1.0].
 410 // @param timingFunction  The timing function to match, or, if no suitable
 411 //                        Keyframe is found, to set on the created Keyframe.
 412 //
 413 // @returns  The matching or created Keyframe.
 414 mozilla::Keyframe* Gecko_GetOrCreateKeyframeAtStart(
 415     nsTArray<mozilla::Keyframe>* keyframes, float offset,
 416     const nsTimingFunction* timingFunction);
 417
 418 // As with Gecko_GetOrCreateKeyframeAtStart except that this method will search
 419 // from the beginning of |keyframes| for a Keyframe with matching timing
 420 // function and an offset of 0.0.
 421 // Furthermore, if a matching Keyframe is not found, a new Keyframe will be
 422 // inserted after the *last* Keyframe in |keyframes| with offset 0.0.
 423 mozilla::Keyframe* Gecko_GetOrCreateInitialKeyframe(
 424     nsTArray<mozilla::Keyframe>* keyframes,
 425     const nsTimingFunction* timingFunction);
 426
 427 // As with Gecko_GetOrCreateKeyframeAtStart except that this method will search
 428 // from the *end* of |keyframes| for a Keyframe with matching timing function
 429 // and an offset of 1.0. If a matching Keyframe is not found, a new Keyframe
 430 // will be appended to the end of |keyframes|.
 431 mozilla::Keyframe* Gecko_GetOrCreateFinalKeyframe(
 432     nsTArray<mozilla::Keyframe>* keyframes,
 433     const nsTimingFunction* timingFunction);
 434
 435 // Appends and returns a new PropertyValuePair to |aProperties| initialized with
 436 // its mProperty member set to |aProperty| and all other members initialized to
 437 // their default values.
 438 mozilla::PropertyValuePair* Gecko_AppendPropertyValuePair(
 439     nsTArray<mozilla::PropertyValuePair>*, nsCSSPropertyID aProperty);
 440
 441 void Gecko_ResetFilters(nsStyleEffects* effects, size_t new_len);
 442
 443 void Gecko_CopyFiltersFrom(nsStyleEffects* aSrc, nsStyleEffects* aDest);
 444
 445 void Gecko_nsStyleSVG_SetDashArrayLength(nsStyleSVG* svg, uint32_t len);
 446
 447 void Gecko_nsStyleSVG_CopyDashArray(nsStyleSVG* dst, const nsStyleSVG* src);
 448
 449 void Gecko_nsStyleSVG_SetContextPropertiesLength(nsStyleSVG* svg, uint32_t len);
 450
 451 void Gecko_nsStyleSVG_CopyContextProperties(nsStyleSVG* dst,
 452                                             const nsStyleSVG* src);
 453
 454 void Gecko_GetComputedURLSpec(const mozilla::StyleComputedUrl* url,
 455                               nsCString* spec);
 456
 457 void Gecko_GetComputedImageURLSpec(const mozilla::StyleComputedUrl* url,
 458                                    nsCString* spec);
 459
 460 void Gecko_nsIURI_Debug(nsIURI*, nsCString* spec);
 461
 462 void Gecko_nsIReferrerInfo_Debug(nsIReferrerInfo* aReferrerInfo,
 463                                  nsCString* aOut);
 464
 465 NS_DECL_THREADSAFE_FFI_REFCOUNTING(mozilla::URLExtraData, URLExtraData);
 466 NS_DECL_THREADSAFE_FFI_REFCOUNTING(nsIReferrerInfo, nsIReferrerInfo);
 467
 468 void Gecko_FillAllImageLayers(nsStyleImageLayers* layers, uint32_t max_len);
 469
 470 float Gecko_FontStretch_ToFloat(mozilla::FontStretch aStretch);
 471
 472 void Gecko_FontStretch_SetFloat(mozilla::FontStretch* aStretch,
 473                                 float aFloatValue);
 474
 475 void Gecko_LoadData_Drop(mozilla::StyleLoadData*);
 476
 477 float Gecko_FontSlantStyle_ToFloat(mozilla::FontSlantStyle aStyle);
 478 void Gecko_FontSlantStyle_SetNormal(mozilla::FontSlantStyle*);
 479 void Gecko_FontSlantStyle_SetItalic(mozilla::FontSlantStyle*);
 480
 481 void Gecko_FontSlantStyle_SetOblique(mozilla::FontSlantStyle*,
 482                                      float angle_degrees);
 483
 484 void Gecko_FontSlantStyle_Get(mozilla::FontSlantStyle, bool* normal,
 485                               bool* italic, float* oblique_angle);
 486
 487 float Gecko_FontWeight_ToFloat(mozilla::FontWeight aWeight);
 488
 489 void Gecko_FontWeight_SetFloat(mozilla::FontWeight* aWeight, float aFloatValue);
 490
 491 void Gecko_nsStyleFont_SetLang(nsStyleFont* font, nsAtom* atom);
 492
 493 void Gecko_nsStyleFont_CopyLangFrom(nsStyleFont* aFont,
 494                                     const nsStyleFont* aSource);
 495
 496 // Moves the generic family in the font-family to the front, or prepends
 497 // aDefaultGeneric, so that user-configured fonts take precedent over document
 498 // fonts.
 499 //
 500 // Document fonts may still be used as fallback for unsupported glyphs though.
 501 void Gecko_nsStyleFont_PrioritizeUserFonts(
 502     nsStyleFont* font, mozilla::StyleGenericFontFamily aDefaultGeneric);
 503
 504 nscoord Gecko_nsStyleFont_ComputeMinSize(const nsStyleFont*,
 505                                          const mozilla::dom::Document*);
 506
 507 // Computes the default generic font for a generic family and language.
 508 mozilla::StyleGenericFontFamily Gecko_nsStyleFont_ComputeDefaultFontType(
 509     const mozilla::dom::Document*,
 510     mozilla::StyleGenericFontFamily generic_family, nsAtom* language);
 511
 512 mozilla::FontSizePrefs Gecko_GetBaseSize(nsAtom* lang);
 513
 514 struct GeckoFontMetrics {
 515   nscoord mChSize;  // -1.0 indicates not found
 516   nscoord mXSize;
 517 };
 518
 519 GeckoFontMetrics Gecko_GetFontMetrics(const nsPresContext*, bool is_vertical,
 520                                       const nsStyleFont* font,
 521                                       nscoord font_size,
 522                                       bool use_user_font_set);
 523
 524 mozilla::StyleSheet* Gecko_StyleSheet_Clone(
 525     const mozilla::StyleSheet* aSheet,
 526     const mozilla::StyleSheet* aNewParentSheet);
 527
 528 void Gecko_StyleSheet_AddRef(const mozilla::StyleSheet* aSheet);
 529 void Gecko_StyleSheet_Release(const mozilla::StyleSheet* aSheet);
 530 bool Gecko_IsDocumentBody(const mozilla::dom::Element* element);
 531
 532 // We use an int32_t here instead of a LookAndFeel::ColorID
 533 // because forward-declaring a nested enum/struct is impossible
 534 nscolor Gecko_GetLookAndFeelSystemColor(int32_t color_id,
 535                                         const mozilla::dom::Document*);
 536
 537 void Gecko_AddPropertyToSet(nsCSSPropertyIDSet*, nsCSSPropertyID);
 538
 539 // Style-struct management.
 540 #define STYLE_STRUCT(name)                                                   \
 541   void Gecko_Construct_Default_nsStyle##name(nsStyle##name* ptr,             \
 542                                              const mozilla::dom::Document*); \
 543   void Gecko_CopyConstruct_nsStyle##name(nsStyle##name* ptr,                 \
 544                                          const nsStyle##name* other);        \
 545   void Gecko_Destroy_nsStyle##name(nsStyle##name* ptr);
 546 #include "nsStyleStructList.h"
 547 #undef STYLE_STRUCT
 548
 549 void Gecko_RegisterProfilerThread(const char* name);
 550 void Gecko_UnregisterProfilerThread();
 551
 552 #ifdef MOZ_GECKO_PROFILER
 553 void Gecko_Construct_AutoProfilerLabel(mozilla::AutoProfilerLabel*,
 554                                        JS::ProfilingCategoryPair);
 555 void Gecko_Destroy_AutoProfilerLabel(mozilla::AutoProfilerLabel*);
 556 #endif
 557
 558 bool Gecko_DocumentRule_UseForPresentation(
 559     const mozilla::dom::Document*, const nsACString* aPattern,
 560     mozilla::css::DocumentMatchingFunction);
 561
 562 // Allocator hinting.
 563 void Gecko_SetJemallocThreadLocalArena(bool enabled);
 564
 565 // Pseudo-element flags.
 566 #define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
 567   const uint32_t SERVO_CSS_PSEUDO_ELEMENT_FLAGS_##name_ = flags_;
 568 #include "nsCSSPseudoElementList.h"
 569 #undef CSS_PSEUDO_ELEMENT
 570
 571 bool Gecko_ErrorReportingEnabled(const mozilla::StyleSheet* sheet,
 572                                  const mozilla::css::Loader* loader,
 573                                  uint64_t* aOutWindowId);
 574
 575 void Gecko_ReportUnexpectedCSSError(
 576     uint64_t windowId, nsIURI* uri, const char* message, const char* param,
 577     uint32_t paramLen, const char* prefix, const char* prefixParam,
 578     uint32_t prefixParamLen, const char* suffix, const char* source,
 579     uint32_t sourceLen, const char* selectors, uint32_t selectorsLen,
 580     uint32_t lineNumber, uint32_t colNumber);
 581
 582 // DOM APIs.
 583 void Gecko_ContentList_AppendAll(nsSimpleContentList* aContentList,
 584                                  const mozilla::dom::Element** aElements,
 585                                  size_t aLength);
 586
 587 // FIXME(emilio): These two below should be a single function that takes a
 588 // `const DocumentOrShadowRoot*`, but that doesn't make MSVC builds happy for a
 589 // reason I haven't really dug into.
 590 const nsTArray<mozilla::dom::Element*>* Gecko_Document_GetElementsWithId(
 591     const mozilla::dom::Document*, nsAtom* aId);
 592
 593 const nsTArray<mozilla::dom::Element*>* Gecko_ShadowRoot_GetElementsWithId(
 594     const mozilla::dom::ShadowRoot*, nsAtom* aId);
 595
 596 // Check the value of the given bool preference. The pref name needs to
 597 // be null-terminated.
 598 bool Gecko_GetBoolPrefValue(const char* pref_name);
 599
 600 // Returns true if we're currently performing the servo traversal.
 601 bool Gecko_IsInServoTraversal();
 602
 603 // Returns true if we're currently on the main thread.
 604 bool Gecko_IsMainThread();
 605
 606 // Media feature helpers.
 607 //
 608 // Defined in nsMediaFeatures.cpp.
 609 mozilla::StyleDisplayMode Gecko_MediaFeatures_GetDisplayMode(
 610     const mozilla::dom::Document*);
 611
 612 uint32_t Gecko_MediaFeatures_GetColorDepth(const mozilla::dom::Document*);
 613
 614 void Gecko_MediaFeatures_GetDeviceSize(const mozilla::dom::Document*,
 615                                        nscoord* width, nscoord* height);
 616
 617 float Gecko_MediaFeatures_GetResolution(const mozilla::dom::Document*);
 618 bool Gecko_MediaFeatures_PrefersReducedMotion(const mozilla::dom::Document*);
 619 mozilla::StylePrefersColorScheme Gecko_MediaFeatures_PrefersColorScheme(
 620     const mozilla::dom::Document*);
 621
 622 mozilla::PointerCapabilities Gecko_MediaFeatures_PrimaryPointerCapabilities(
 623     const mozilla::dom::Document*);
 624
 625 mozilla::PointerCapabilities Gecko_MediaFeatures_AllPointerCapabilities(
 626     const mozilla::dom::Document*);
 627
 628 float Gecko_MediaFeatures_GetDevicePixelRatio(const mozilla::dom::Document*);
 629
 630 bool Gecko_MediaFeatures_HasSystemMetric(const mozilla::dom::Document*,
 631                                          nsAtom* metric,
 632                                          bool is_accessible_from_content);
 633
 634 bool Gecko_MediaFeatures_IsResourceDocument(const mozilla::dom::Document*);
 635 nsAtom* Gecko_MediaFeatures_GetOperatingSystemVersion(
 636     const mozilla::dom::Document*);
 637
 638 void Gecko_GetSafeAreaInsets(const nsPresContext*, float*, float*, float*,
 639                              float*);
 640
 641 void Gecko_PrintfStderr(const nsCString*);
 642
 643 }  // extern "C"
 644
 645 #endif  // mozilla_GeckoBindings_h