Name Description Size Coverage
AbsoluteContainingBlock.cpp code for managing absolutely positioned children of a rendering object that is a containing block for them 99382 93 %
AbsoluteContainingBlock.h code for managing absolutely positioned children of a rendering object that is a containing block for them 9656 100 %
AnonymousContentKey.h values to identify particular subtrees of native anonymous content 1611 100 %
AspectRatio.cpp 1297 100 %
AspectRatio.h The aspect ratio of a box, in a "width / height" format. 5363 88 %
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. 1620 100 %
BlockReflowState.cpp state used in reflow of block frames 43887 100 %
BlockReflowState.h state used in reflow of block frames 17406 92 %
BRFrame.cpp rendering object for HTML <br> elements 11246 96 %
broken-image.png 160 -
ColumnSetWrapperFrame.cpp 12037 86 %
ColumnSetWrapperFrame.h 3032 100 %
ColumnUtils.cpp A namespace class for static muti-column utilities. 1539 100 %
ColumnUtils.h A namespace class for static muti-column utilities. 1221 -
crashtests -
CSSAlignUtils.cpp Utility code for performing CSS Box Alignment 8452 99 %
CSSAlignUtils.h Utility code for performing CSS Box Alignment 3547 -
CSSOrderAwareFrameIterator.cpp Iterator class for frame lists that respect CSS "order" during layout 2662 69 %
CSSOrderAwareFrameIterator.h Iterator class for frame lists that respect CSS "order" during layout 8910 100 %
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 10042 -
GenerateFrameLists.py 1645 -
IntrinsicISizesCache.h 6178 100 %
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. 4232 100 %
LayoutMessageUtils.h 1562 100 %
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. 26169 63 %
MathMLTextRunFactory.h Builds textruns that render their text with MathML specific renderings. 1610 100 %
MiddleCroppingBlockFrame.cpp aIsCropped = 7390 96 %
MiddleCroppingBlockFrame.h Crop aText to fit inside aWidth using the styles of aFrame. @return true if aText was modified 2063 0 %
moz.build 7867 -
nsAtomicContainerFrame.h base class for rendering objects that need child lists but behave like leaf 1574 100 %
nsBlockDebugFlags.h 1072 -
nsBlockFrame.cpp rendering object for CSS display:block, inline-block, and list-item boxes, also used for various anonymous boxes 347315 95 %
nsBlockFrame.h rendering object for CSS display:block, inline-block, and list-item boxes, also used for various anonymous boxes 44587 97 %
nsBlockReflowContext.cpp class that a parent frame uses to reflow a block frame 17759 97 %
nsBlockReflowContext.h class that a parent frame uses to reflow a block frame 3389 100 %
nsCanvasFrame.cpp rendering object that goes directly inside the document's scrollbars 25862 90 %
nsCanvasFrame.h rendering object that goes directly inside the document's scrollbars 3642 89 %
nsColumnSetFrame.cpp rendering object for css3 multi-column layout 59653 95 %
nsColumnSetFrame.h rendering object for css3 multi-column layout 8213 96 %
nsContainerFrame.cpp base class #1 for rendering objects that have child lists 113627 93 %
nsContainerFrame.h base class #1 for rendering objects that have child lists 48075 99 %
nsContainerFrameInlines.h 3947 96 %
nsDirection.h 503 -
nsFirstLetterFrame.cpp rendering object for CSS :first-letter pseudo-element 20042 89 %
nsFirstLetterFrame.h rendering object for CSS :first-letter pseudo-element 4239 100 %
nsFlexContainerFrame.cpp rendering object for CSS "display: flex" 293722 96 %
nsFlexContainerFrame.h rendering object for CSS "display: flex" and "display: -webkit-box" 31980 100 %
nsFloatManager.cpp class that manages rules for positioning floats 128213 90 %
nsFloatManager.h class that manages rules for positioning floats 18561 100 %
nsFontInflationData.cpp Per-block-formatting-context manager of font size inflation for pan and zoom UI. 13893 99 %
nsFontInflationData.h Per-block-formatting-context manager of font size inflation for pan and zoom UI. 2207 100 %
nsFrameList.cpp 14502 96 %
nsFrameList.h for FILE* 15296 100 %
nsFrameSelection.cpp Implementation of nsFrameSelection 121000 80 %
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. 54553 99 %
nsFrameSetFrame.cpp rendering object for HTML <frameset> elements 55062 93 %
nsFrameSetFrame.h rendering object for HTML <frameset> elements 6576 100 %
nsFrameState.cpp constants for frame state bits and a type to store them in a uint64_t 3809 -
nsFrameState.h constants for frame state bits and a type to store them in a uint64_t 2086 100 %
nsFrameStateBits.h a list of all frame state bits, for preprocessing 31208 -
nsGridContainerFrame.cpp rendering object for CSS "display: grid | inline-grid" 465842 83 %
nsGridContainerFrame.h rendering object for CSS "display: grid | inline-grid" 24537 100 %
nsHTMLCanvasFrame.cpp rendering object for the HTML <canvas> element 18916 89 %
nsHTMLCanvasFrame.h rendering object for the HTML <canvas> element 2944 100 %
nsHTMLParts.h factory functions for rendering object classes 7603 -
nsIAnonymousContentCreator.h interface for rendering objects that manually create subtrees of anonymous content 2248 100 %
nsIFrame.cpp base class of all rendering objects 481982 94 %
nsIFrame.h interface for all rendering objects 230164 98 %
nsIFrameInlines.h 6965 99 %
nsILineIterator.cpp 2326 74 %
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. 4430 100 %
nsImageFrame.cpp rendering object for replaced elements with image data 111113 91 %
nsImageFrame.h rendering object for replaced elements with image data 16910 97 %
nsImageMap.cpp code for HTML client-side image maps 25943 83 %
nsImageMap.h code for HTML client-side image maps 3193 67 %
nsInlineFrame.cpp rendering object for CSS display:inline objects 41590 89 %
nsInlineFrame.h rendering object for CSS display:inline objects 7435 100 %
nsIntervalSet.cpp a set of ranges on a number-line 2320 84 %
nsIntervalSet.h a set of ranges on a number-line 1816 100 %
nsIStatefulFrame.h interface for rendering objects whose state is saved in session-history (back-forward navigation) 1110 100 %
nsLeafFrame.cpp base class for rendering objects that do not have child lists 1445 100 %
nsLeafFrame.h base class for rendering objects that do not have child lists 1717 67 %
nsLineBox.cpp representation of one line within a block frame, a CSS line box 21485 93 %
nsLineBox.h representation of one line within a block frame, a CSS line box 35316 96 %
nsLineLayout.cpp state and methods used while laying out a single line of a block frame 139515 97 %
nsLineLayout.h state and methods used while laying out a single line of a block frame 26278 100 %
nsPageContentFrame.cpp 19736 92 %
nsPageContentFrame.h Return our canvas frame. 2313 100 %
nsPageFrame.cpp 44168 82 %
nsPageFrame.h 6594 83 %
nsPageSequenceFrame.cpp Members are: {mNumPages, mLargerNumTracks} 32170 95 %
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. 6739 100 %
nsPlaceholderFrame.cpp rendering object for the point that anchors out-of-flow rendering objects such as floats and absolutely positioned elements 8967 90 %
nsPlaceholderFrame.h rendering object for the point that anchors out-of-flow rendering objects such as floats and absolutely positioned elements 7034 83 %
nsQueryFrame.h 6662 100 %
nsRubyBaseContainerFrame.cpp rendering object for CSS "display: ruby-base-container" 33126 89 %
nsRubyBaseContainerFrame.h rendering object for CSS "display: ruby-base-container" 3612 82 %
nsRubyBaseFrame.cpp rendering object for CSS "display: ruby-base" 1294 83 %
nsRubyBaseFrame.h rendering object for CSS "display: ruby-base" 1384 100 %
nsRubyContentFrame.cpp base class for ruby rendering objects that directly contain content 902 100 %
nsRubyContentFrame.h base class for ruby rendering objects that directly contain content 1028 100 %
nsRubyFrame.cpp rendering object for CSS "display: ruby" 20305 90 %
nsRubyFrame.h rendering object for CSS "display: ruby" 2619 100 %
nsRubyTextContainerFrame.cpp rendering object for CSS "display: ruby-text-container" 6963 86 %
nsRubyTextContainerFrame.h rendering object for CSS "display: ruby-text-container" 2852 100 %
nsRubyTextFrame.cpp rendering object for CSS "display: ruby-text" 2671 95 %
nsRubyTextFrame.h rendering object for CSS "display: ruby-text" 1632 100 %
nsSplittableFrame.cpp base class for rendering objects that can be split across lines, columns, or pages 11984 98 %
nsSplittableFrame.h base class for rendering objects that can be split across lines, columns, or pages 6265 100 %
nsSubDocumentFrame.cpp rendering object for replaced elements that contain a document, such as <frame>, <iframe>, and some <object>s 46575 94 %
nsSubDocumentFrame.h nsSubDocumentFrame *************************************************************************** 8520 86 %
nsTextFrame.cpp rendering object for textual content of elements 473544 91 %
nsTextFrame.h Helper for CSS text-autospace, used by nsTextFrame::PropertyProvider. 48072 92 %
nsTextFrameUtils.cpp static 16080 100 %
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). 8221 100 %
nsTextPaintStyle.cpp 24300 87 %
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. 6276 86 %
nsTextRunTransformations.cpp 39036 83 %
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. 11001 100 %
nsVideoFrame.cpp rendering object for the HTML <video> element 27011 95 %
nsVideoFrame.h rendering object for the HTML <video> element 5338 90 %
PrintedSheetFrame.cpp Rendering object for a printed or print-previewed sheet of paper 17788 91 %
PrintedSheetFrame.h Rendering object for a printed or print-previewed sheet of paper 5967 100 %
ReflowInput.cpp struct containing the input to nsIFrame::Reflow 129915 94 %
ReflowInput.h struct containing the input to nsIFrame::Reflow 41700 100 %
ReflowOutput.cpp struct containing the output from nsIFrame::Reflow 2902 100 %
ReflowOutput.h struct containing the output from nsIFrame::Reflow 9484 100 %
RubyUtils.cpp static 6902 95 %
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. 7136 100 %
ScrollAnchorContainer.cpp Set the appropriate frame flags for a frame that has become or is no longer an anchor node. 30049 96 %
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/ 6672 100 %
ScrollAnimationBezierPhysics.cpp 5943 99 %
ScrollAnimationBezierPhysics.h 3408 100 %
ScrollAnimationMSDPhysics.cpp 7900 98 %
ScrollAnimationMSDPhysics.h 2655 50 %
ScrollAnimationPhysics.h 2271 17 %
ScrollbarActivity.cpp 5194 97 %
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(). 3341 100 %
ScrollbarPreferences.h 438 -
ScrollContainerFrame.cpp rendering object to wrap rendering objects that should be scrollable 317197 95 %
ScrollContainerFrame.h rendering object to wrap rendering objects that should be scrollable 62628 97 %
ScrollGeneration.cpp 1433 80 %
ScrollGeneration.h 1926 100 %
ScrollOrigin.h 3041 0 %
ScrollPositionUpdate.cpp static 5078 91 %
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 86 %
ScrollSnap.cpp Keeps track of the current best edge to snap to. The criteria for adding an edge depends on the scrolling unit. 36252 95 %
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. 3779 -
ScrollSnapInfo.cpp 3522 93 %
ScrollSnapInfo.h 4789 100 %
ScrollSnapTargetId.h 1083 100 %
ScrollVelocityQueue.cpp Calculate the velocity of the scroll frame, in appunits / second. 2816 92 %
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. 3367 100 %
SelectionMovementUtils.cpp 38394 94 %
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`. 9994 95 %
StickyScrollContainer.cpp compute sticky positioning, both during reflow and when the scrolling container scrolls 16080 97 %
StickyScrollContainer.h compute sticky positioning, both during reflow and when the scrolling container scrolls 3449 100 %
test -
TextDrawTarget.h 24005 63 %
TextOverflow.cpp 35951 96 %
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<>). 13208 100 %
ViewportFrame.cpp rendering object that is the root of the frame tree, which contains the document's scrollbars and contains fixed-positioned elements 21067 97 %
ViewportFrame.h rendering object that is the root of the frame tree, which contains contains fixed-positioned elements 3597 100 %
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. 1629 -
WBRFrame.cpp rendering object for HTML <wbr> elements 2416 100 %
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/ 81258 95 %