Name Description Size Coverage
AbsoluteContainingBlock.cpp code for managing absolutely positioned children of a rendering object that is a containing block for them 94037 -
AbsoluteContainingBlock.h code for managing absolutely positioned children of a rendering object that is a containing block for them 9907 -
AnonymousContentKey.h values to identify particular subtrees of native anonymous content 1732 -
AspectRatio.cpp 1418 -
AspectRatio.h The aspect ratio of a box, in a "width / height" format. 5484 -
AutoCopyListener.h OnSelectionChange() is called when a Selection whose NotifyAutoCopy() was called is changed. @param aDocument The document of the Selection. May be nullptr. @param aSelection The selection. @param aReason The reasons of the change. See nsISelectionListener::*_REASON. 1741 -
BlockReflowState.cpp state used in reflow of block frames 44008 -
BlockReflowState.h state used in reflow of block frames 17527 -
BRFrame.cpp rendering object for HTML <br> elements 11367 -
broken-image.png 160 -
ColumnSetWrapperFrame.cpp 12155 -
ColumnSetWrapperFrame.h 3153 -
ColumnUtils.cpp A namespace class for static muti-column utilities. 1660 -
ColumnUtils.h A namespace class for static muti-column utilities. 1342 -
crashtests -
CSSAlignUtils.cpp Utility code for performing CSS Box Alignment 8573 -
CSSAlignUtils.h Utility code for performing CSS Box Alignment 3668 -
CSSOrderAwareFrameIterator.cpp Iterator class for frame lists that respect CSS "order" during layout 2783 -
CSSOrderAwareFrameIterator.h Iterator class for frame lists that respect CSS "order" during layout 9031 -
folder.png 529 -
frame-graph.py Take the *.framedata files from graph-frameclasses.js and combine them into a single graphviz file. stdin: a list of .framedata file names (e.g. from xargs) stdout: a graphviz file e.g. `find <objdir> -name "*.framedata" | python aggregate-frameclasses.py | dot -Tpng -o frameclasses-graph.png -` 1070 -
FrameClass.py 593 -
FrameClasses.py 10223 -
GenerateFrameLists.py 1645 -
IntrinsicISizesCache.h 6299 -
jar.mn 271 -
JustificationUtils.h Jutification Algorithm The justification algorithm is based on expansion opportunities between justifiable clusters. By this algorithm, there is one expansion opportunity at each side of a justifiable cluster, and at most one opportunity between two clusters. For example, if there is a line in a Chinese document is: "你好世界hello world", then the expansion opportunities (marked as '*') would be: 你*好*世*界*hello*' '*world The spacing left in a line will then be distributed equally to each opportunities. Because we want that, only justifiable clusters get expanded, and the split point between two justifiable clusters would be at the middle of the spacing, each expansion opportunities will be filled by two justification gaps. The example above would be: 你 | 好 | 世 | 界 |hello| ' ' |world In the algorithm, information about expansion opportunities is stored in structure JustificationInfo, and the assignment of justification gaps is in structure JustificationAssignment. 4353 -
LayoutMessageUtils.h 1683 -
MathMLTextRunFactory.cpp Entries for the mathvariant lookup tables. mKey represents the Unicode character to be transformed and is used for searching the tables. mReplacement represents the mapped mathvariant Unicode character. 26290 -
MathMLTextRunFactory.h Builds textruns that render their text with MathML specific renderings. 1731 -
MiddleCroppingBlockFrame.cpp aIsCropped = 7511 -
MiddleCroppingBlockFrame.h Crop aText to fit inside aWidth using the styles of aFrame. @return true if aText was modified 2184 -
moz.build 7892 -
nsAtomicContainerFrame.h base class for rendering objects that need child lists but behave like leaf 1695 -
nsBlockDebugFlags.h 1193 -
nsBlockFrame.cpp rendering object for CSS display:block, inline-block, and list-item boxes, also used for various anonymous boxes 347409 -
nsBlockFrame.h rendering object for CSS display:block, inline-block, and list-item boxes, also used for various anonymous boxes 44738 -
nsBlockReflowContext.cpp class that a parent frame uses to reflow a block frame 17880 -
nsBlockReflowContext.h class that a parent frame uses to reflow a block frame 3510 -
nsCanvasFrame.cpp rendering object that goes directly inside the document's scrollbars 25707 -
nsCanvasFrame.h rendering object that goes directly inside the document's scrollbars 3763 -
nsColumnSetFrame.cpp rendering object for css3 multi-column layout 59757 -
nsColumnSetFrame.h rendering object for css3 multi-column layout 8334 -
nsContainerFrame.cpp base class #1 for rendering objects that have child lists 114739 -
nsContainerFrame.h base class #1 for rendering objects that have child lists 48230 -
nsContainerFrameInlines.h 4068 -
nsDirection.h 624 -
nsFirstLetterFrame.cpp rendering object for CSS :first-letter pseudo-element 20163 -
nsFirstLetterFrame.h rendering object for CSS :first-letter pseudo-element 4360 -
nsFlexContainerFrame.cpp rendering object for CSS "display: flex" 293952 -
nsFlexContainerFrame.h rendering object for CSS "display: flex" and "display: -webkit-box" 32101 -
nsFloatManager.cpp class that manages rules for positioning floats 128334 -
nsFloatManager.h class that manages rules for positioning floats 18682 -
nsFontInflationData.cpp Per-block-formatting-context manager of font size inflation for pan and zoom UI. 14014 -
nsFontInflationData.h Per-block-formatting-context manager of font size inflation for pan and zoom UI. 2328 -
nsFrameList.cpp 14749 -
nsFrameList.h for FILE* 15438 -
nsFrameSelection.cpp Implementation of nsFrameSelection 120470 -
nsFrameSelection.h PeekOffsetStruct is used to group various arguments (both input and output) that are passed to nsIFrame::PeekOffset(). See below for the description of individual arguments. 54370 -
nsFrameSetFrame.cpp rendering object for HTML <frameset> elements 54731 -
nsFrameSetFrame.h rendering object for HTML <frameset> elements 6697 -
nsFrameState.cpp constants for frame state bits and a type to store them in a uint64_t 3930 -
nsFrameState.h constants for frame state bits and a type to store them in a uint64_t 2207 -
nsFrameStateBits.h a list of all frame state bits, for preprocessing 31329 -
nsGridContainerFrame.cpp rendering object for CSS "display: grid | inline-grid" 465975 -
nsGridContainerFrame.h rendering object for CSS "display: grid | inline-grid" 24658 -
nsHTMLCanvasFrame.cpp rendering object for the HTML <canvas> element 19037 -
nsHTMLCanvasFrame.h rendering object for the HTML <canvas> element 3065 -
nsHTMLParts.h factory functions for rendering object classes 7994 -
nsIAnonymousContentCreator.h interface for rendering objects that manually create subtrees of anonymous content 2369 -
nsIFrame.cpp base class of all rendering objects 480171 -
nsIFrame.h interface for all rendering objects 230921 -
nsIFrameInlines.h 7108 -
nsILineIterator.cpp 2447 -
nsILineIterator.h Line iterator API. Lines are numbered from 0 to N, where 0 is the top line and N is the bottom line. Obtain this interface from frames via nsIFrame::GetLineIterator. This iterator belongs to the frame from which it was obtained, and should not be deleted by the caller. Note that any modification of the frame will invalidate the iterator! Users must get a new iterator any time the target may have been touched. 4551 -
nsImageFrame.cpp rendering object for replaced elements with image data 111338 -
nsImageFrame.h rendering object for replaced elements with image data 17031 -
nsImageMap.cpp code for HTML client-side image maps 26064 -
nsImageMap.h code for HTML client-side image maps 3314 -
nsInlineFrame.cpp rendering object for CSS display:inline objects 41739 -
nsInlineFrame.h rendering object for CSS display:inline objects 7556 -
nsIntervalSet.cpp a set of ranges on a number-line 2429 -
nsIntervalSet.h a set of ranges on a number-line 1925 -
nsIStatefulFrame.h interface for rendering objects whose state is saved in session-history (back-forward navigation) 1231 -
nsLeafFrame.cpp base class for rendering objects that do not have child lists 1566 -
nsLeafFrame.h base class for rendering objects that do not have child lists 1838 -
nsLineBox.cpp representation of one line within a block frame, a CSS line box 21606 -
nsLineBox.h representation of one line within a block frame, a CSS line box 35464 -
nsLineLayout.cpp state and methods used while laying out a single line of a block frame 139384 -
nsLineLayout.h state and methods used while laying out a single line of a block frame 26399 -
nsPageContentFrame.cpp 19627 -
nsPageContentFrame.h Return our canvas frame. 2434 -
nsPageFrame.cpp 44065 -
nsPageFrame.h 6715 -
nsPageSequenceFrame.cpp Members are: {mNumPages, mLargerNumTracks} 29607 -
nsPageSequenceFrame.h This class maintains various shared data that is used by printing-related frames. The nsPageSequenceFrame strongly owns an instance of this class, which lives for as long as the nsPageSequenceFrame does. 6860 -
nsPlaceholderFrame.cpp rendering object for the point that anchors out-of-flow rendering objects such as floats and absolutely positioned elements 9318 -
nsPlaceholderFrame.h rendering object for the point that anchors out-of-flow rendering objects such as floats and absolutely positioned elements 7155 -
nsQueryFrame.h 6783 -
nsRubyBaseContainerFrame.cpp rendering object for CSS "display: ruby-base-container" 33247 -
nsRubyBaseContainerFrame.h rendering object for CSS "display: ruby-base-container" 3733 -
nsRubyBaseFrame.cpp rendering object for CSS "display: ruby-base" 1415 -
nsRubyBaseFrame.h rendering object for CSS "display: ruby-base" 1505 -
nsRubyContentFrame.cpp base class for ruby rendering objects that directly contain content 1045 -
nsRubyContentFrame.h base class for ruby rendering objects that directly contain content 1149 -
nsRubyFrame.cpp rendering object for CSS "display: ruby" 20426 -
nsRubyFrame.h rendering object for CSS "display: ruby" 2740 -
nsRubyTextContainerFrame.cpp rendering object for CSS "display: ruby-text-container" 7084 -
nsRubyTextContainerFrame.h rendering object for CSS "display: ruby-text-container" 2973 -
nsRubyTextFrame.cpp rendering object for CSS "display: ruby-text" 2792 -
nsRubyTextFrame.h rendering object for CSS "display: ruby-text" 1753 -
nsSplittableFrame.cpp base class for rendering objects that can be split across lines, columns, or pages 12102 -
nsSplittableFrame.h base class for rendering objects that can be split across lines, columns, or pages 6386 -
nsSubDocumentFrame.cpp rendering object for replaced elements that contain a document, such as <frame>, <iframe>, and some <object>s 47147 -
nsSubDocumentFrame.h nsSubDocumentFrame *************************************************************************** 8641 -
nsTextFrame.cpp rendering object for textual content of elements 470304 -
nsTextFrame.h Helper for CSS text-autospace, used by nsTextFrame::PropertyProvider. 48025 -
nsTextFrameUtils.cpp static 16201 -
nsTextFrameUtils.h Returns true if aChars/aLength are something that make a space character not be whitespace when they follow the space character (combining mark or join control, ignoring intervening direction controls). 8342 -
nsTextPaintStyle.cpp 24421 -
nsTextPaintStyle.h This helper object computes colors used for painting, and also IME underline information. The data is computed lazily and cached as necessary. These live for just the duration of one paint operation. 6397 -
nsTextRunTransformations.cpp 39157 -
nsTextRunTransformations.h Builds textruns that transform the text in some way (e.g., capitalize) and then render the text using some other textrun implementation. This factory also supports "text-security" transforms that convert all characters to a single symbol. 11122 -
nsVideoFrame.cpp rendering object for the HTML <video> element 27132 -
nsVideoFrame.h rendering object for the HTML <video> element 5459 -
PrintedSheetFrame.cpp Rendering object for a printed or print-previewed sheet of paper 17783 -
PrintedSheetFrame.h Rendering object for a printed or print-previewed sheet of paper 6088 -
ReflowInput.cpp struct containing the input to nsIFrame::Reflow 130027 -
ReflowInput.h struct containing the input to nsIFrame::Reflow 41729 -
ReflowOutput.cpp struct containing the output from nsIFrame::Reflow 3023 -
ReflowOutput.h struct containing the output from nsIFrame::Reflow 9605 -
RubyUtils.cpp static 7023 -
RubyUtils.h Reserved ISize With some exceptions, each ruby internal box has two isizes, which are the reflowed isize and the final isize. The reflowed isize is what a box itself needs. It is determined when the box gets reflowed. The final isize is what a box should be as the final result. For a ruby base/text box, the final isize is the size of its ruby column. For a ruby base/text container, the final isize is the size of its ruby segment. The final isize is never smaller than the reflowed isize. It is initially determined when a ruby column/segment gets fully reflowed, and may be advanced when a box is expanded, e.g. for justification. The difference between the reflowed isize and the final isize is reserved in the line layout after reflowing a box, hence it is called "Reserved ISize" here. It is used to expand the ruby boxes from their reflowed isize to the final isize during alignment of the line. There are three exceptions for the final isize: 1. A ruby text container has a larger final isize only if it is for a span or collapsed annotations. 2. A ruby base container has a larger final isize only if at least one of its ruby text containers does. 3. If a ruby text container has a larger final isize, its children must not have. 7267 -
ScrollAnchorContainer.cpp Set the appropriate frame flags for a frame that has become or is no longer an anchor node. 30275 -
ScrollAnchorContainer.h A scroll anchor container finds a descendent element of a scroll container frame to be an anchor node. After every reflow, the scroll anchor will apply scroll adjustments to keep the anchor node in the same relative position. See: https://drafts.csswg.org/css-scroll-anchoring/ 6783 -
ScrollAnimationBezierPhysics.cpp 6064 -
ScrollAnimationBezierPhysics.h 3529 -
ScrollAnimationMSDPhysics.cpp 8021 -
ScrollAnimationMSDPhysics.h 2776 -
ScrollAnimationPhysics.h 2392 -
ScrollbarActivity.cpp 5315 -
ScrollbarActivity.h ScrollbarActivity This class manages scrollbar behavior that imitates the native Mac OS X Lion overlay scrollbar behavior: Scrollbars are only shown while "scrollbar activity" occurs, and they're hidden with a fade animation after a short delay. Scrollbar activity has these states: - inactive: Scrollbars are hidden. - ongoing activity: Scrollbars are visible and being operated on in some way, for example because they're hovered or pressed. - active, but waiting for fade out Scrollbars are still completely visible but are about to fade away. - fading out Scrollbars are subject to a fade-out animation. Initial scrollbar activity needs to be reported by the scrollbar holder that owns the ScrollbarActivity instance. This needs to happen via a call to ActivityOccurred(), for example when the current scroll position or the size of the scroll area changes. As soon as scrollbars are visible, the ScrollbarActivity class manages the rest of the activity behavior: It ensures that mouse motions inside the scroll area keep the scrollbars visible, and that scrollbars don't fade away while they're being hovered / dragged. It also sets a sticky hover attribute on the most recently hovered scrollbar. ScrollbarActivity falls into hibernation after the scrollbars have faded out. It only starts acting after the next call to ActivityOccurred() / ActivityStarted(). 3462 -
ScrollbarPreferences.h 559 -
ScrollContainerFrame.cpp rendering object to wrap rendering objects that should be scrollable 314347 -
ScrollContainerFrame.h rendering object to wrap rendering objects that should be scrollable 61868 -
ScrollGeneration.cpp 1433 -
ScrollGeneration.h 1926 -
ScrollOrigin.h 3041 -
ScrollPositionUpdate.cpp static 5078 -
ScrollPositionUpdate.h This class represents an update to the scroll position that is initiated by something on the main thread. A list of these classes is accumulated by scrollframes on the main thread, and the list is sent over as part of a paint transaction to the compositor. The compositor can then iterate through the scroll updates and apply/merge them with scrolling that has already occurred independently on the compositor side. 5912 -
ScrollSnap.cpp Keeps track of the current best edge to snap to. The criteria for adding an edge depends on the scrolling unit. 36373 -
ScrollSnap.h GetSnapPointForDestination determines which point to snap to after scrolling. |aStartPos| gives the position before scrolling and |aDestination| gives the position after scrolling, with no snapping. Behaviour is dependent on the value of |aUnit|. |aSnapInfo| and |aScrollRange| are characteristics of the scroll frame for which snapping is being performed. If a suitable snap point could be found, it is returned. Otherwise, an empty Maybe is returned. IMPORTANT NOTE: This function is designed to be called both on and off the main thread. If modifying its implementation, be sure not to touch main-thread-only data structures without appropriate locking. 3900 -
ScrollSnapInfo.cpp 3643 -
ScrollSnapInfo.h 4674 -
ScrollSnapTargetId.h 1083 -
ScrollVelocityQueue.cpp Calculate the velocity of the scroll frame, in appunits / second. 2937 -
ScrollVelocityQueue.h ScrollVelocityQueue is used to determine the current velocity of a scroll frame, derived from scroll position samples. Using the last iteration's scroll position, stored in mLastPosition, a delta of the scroll position is calculated and accumulated in mAccumulator until the refresh driver returns a new timestamp for MostRecentRefresh(). When there is a new timestamp from the refresh driver, the accumulated change in scroll position is divided by the delta of the timestamp to get an average velocity over that period. This velocity is pushed into mQueue as a std::pair associating each velocity with the duration over which it was sampled. Samples are removed from mQueue, leaving only those necessary to determine the average velocity over the recent relevant period, which has a duration set by the apz.velocity_relevance_time_ms preference. The velocity of each sample is clamped to a value set by the layout.css.scroll-snap.prediction-max-velocity. As the average velocity will later be integrated over a duration set by the layout.css.scroll-snap.prediction-sensitivity preference and the velocity samples are clamped to a set value, the maximum expected scroll offset can be calculated. This maximum offset is used to clamp mAccumulator, eliminating samples that would otherwise result in scroll snap position selection that is not consistent with the user's perception of scroll velocity. 3488 -
SelectionMovementUtils.cpp 38515 -
SelectionMovementUtils.h @brief Creates a new `RangeBoundary` which moves `aAmount` into `aDirection` from the input range boundary. @param aRangeBoundary The input range boundary. @param aDirection The direction into which the new boundary should be moved. @param aHint The `CaretAssociationHint` (is the caret before or after the boundary point) @param aCaretBidiLevel The `BidiEmbeddingLevel`. @param aAmount The amount which the range boundary should be moved. @param aOptions Additional options, see `PeekOffsetOption`. @param aAncestorLimiter The content node that limits where Selection may be expanded to. @return Returns a new `RangeBoundary` which is moved from `aRangeBoundary` by `aAmount` into `aDirection`. 10115 -
StickyScrollContainer.cpp compute sticky positioning, both during reflow and when the scrolling container scrolls 15919 -
StickyScrollContainer.h compute sticky positioning, both during reflow and when the scrolling container scrolls 3570 -
test -
TextDrawTarget.h 24126 -
TextOverflow.cpp 36100 -
TextOverflow.h A class for rendering CSS3 text-overflow. Usage: 1. allocate an object using WillProcessLines 2. then call ProcessLine for each line you are building display lists for Note that this class is non-reassignable; we don't want to be making arbitrary copies. (But we do have a move constructor, since that's required in order to be stored in Maybe<>). 13329 -
ViewportFrame.cpp rendering object that is the root of the frame tree, which contains the document's scrollbars and contains fixed-positioned elements 21188 -
ViewportFrame.h rendering object that is the root of the frame tree, which contains contains fixed-positioned elements 3824 -
Visibility.h Declares visibility-related types. @Visibility is an enumeration of the possible visibility states of a frame. @OnNonvisible is an enumeration that allows callers to request a specific action when a frame transitions from visible to nonvisible. 1750 -
WBRFrame.cpp rendering object for HTML <wbr> elements 2537 -
WritingModes.h mozilla::WritingMode is an immutable class representing a writing mode. It efficiently stores the writing mode and can rapidly compute interesting things about it for use in layout. Writing modes are computed from the CSS 'direction', 'writing-mode', and 'text-orientation' properties. See CSS3 Writing Modes for more information http://www.w3.org/TR/css3-writing-modes/ 81280 -