Name Description Size
AnonymousContentKey.h values to identify particular subtrees of native anonymous content 1731
AspectRatio.cpp 1430
AspectRatio.h The aspect ratio of a box, in a "width / height" format. 5313
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. 1938
BlockReflowState.cpp state used in reflow of block frames 43850
BlockReflowState.h state used in reflow of block frames 16070
BRFrame.cpp rendering object for HTML <br> elements 9635
broken-image.png 160
ColumnSetWrapperFrame.cpp 9451
ColumnSetWrapperFrame.h 2642
ColumnUtils.cpp A namespace class for static muti-column utilities. 1662
ColumnUtils.h A namespace class for static muti-column utilities. 1342
crashtests 829
CSSAlignUtils.cpp Utility code for performing CSS Box Alignment 5767
CSSAlignUtils.h Utility code for performing CSS Box Alignment 2686
CSSOrderAwareFrameIterator.cpp Iterator class for frame lists that respect CSS "order" during layout 2522
CSSOrderAwareFrameIterator.h Iterator class for frame lists that respect CSS "order" during layout 9077
DetailsFrame.cpp 4780
DetailsFrame.h 2248
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
FrameChildList.cpp 1530
FrameChildList.h !defined(FrameChildList_h_) 1231
FrameClass.py 723
FrameClasses.py 8407
GenerateFrameLists.py 1500
jar.mn 330
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. 4385
LayoutMessageUtils.h 1358
loading-image.png 160
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. 26992
MathMLTextRunFactory.h Builds textruns that render their text with MathML specific renderings. 1797
moz.build 7197
nsAbsoluteContainingBlock.cpp code for managing absolutely positioned children of a rendering object that is a containing block for them 38375
nsAbsoluteContainingBlock.h code for managing absolutely positioned children of a rendering object that is a containing block for them 7261
nsAtomicContainerFrame.h base class for rendering objects that need child lists but behave like leaf 1701
nsBackdropFrame.cpp rendering object for CSS "::backdrop" 2887
nsBackdropFrame.h rendering object for CSS "::backdrop" 1623
nsBlockDebugFlags.h 1460
nsBlockFrame.cpp rendering object for CSS display:block, inline-block, and list-item boxes, also used for various anonymous boxes 316008
nsBlockFrame.h rendering object for CSS display:block, inline-block, and list-item boxes, also used for various anonymous boxes 40542
nsBlockReflowContext.cpp class that a parent frame uses to reflow a block frame 17612
nsBlockReflowContext.h class that a parent frame uses to reflow a block frame 3528
nsCanvasFrame.cpp rendering object that goes directly inside the document's scrollbars 36518
nsCanvasFrame.h rendering object that goes directly inside the document's scrollbars 8004
nsColumnSetFrame.cpp rendering object for css3 multi-column layout 55522
nsColumnSetFrame.h rendering object for css3 multi-column layout 8196
nsContainerFrame.cpp base class #1 for rendering objects that have child lists 122868
nsContainerFrame.h base class #1 for rendering objects that have child lists 53459
nsContainerFrameInlines.h 3826
nsDirection.h 527
nsFirstLetterFrame.cpp rendering object for CSS :first-letter pseudo-element 15615
nsFirstLetterFrame.h rendering object for CSS :first-letter pseudo-element 3678
nsFlexContainerFrame.cpp rendering object for CSS "display: flex" 253209
nsFlexContainerFrame.h rendering object for CSS "display: flex" and "display: -webkit-box" 30126
nsFloatManager.cpp class that manages rules for positioning floats 128054
nsFloatManager.h class that manages rules for positioning floats 18665
nsFontInflationData.cpp Per-block-formatting-context manager of font size inflation for pan and zoom UI. 14051
nsFontInflationData.h Per-block-formatting-context manager of font size inflation for pan and zoom UI. 2328
nsFrameList.cpp 15778
nsFrameList.h for FILE* 20342
nsFrameSelection.cpp Implementation of nsFrameSelection 115732
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. 41677
nsFrameSetFrame.cpp rendering object for HTML <frameset> elements 55198
nsFrameSetFrame.h rendering object for HTML <frameset> elements 6676
nsFrameState.cpp constants for frame state bits and a type to store them in a uint64_t 3984
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 32295
nsGfxScrollFrame.cpp rendering object to wrap rendering objects that should be scrollable 322781
nsGfxScrollFrame.h rendering object to wrap rendering objects that should be scrollable 70856
nsGridContainerFrame.cpp rendering object for CSS "display: grid | inline-grid" 415677
nsGridContainerFrame.h rendering object for CSS "display: grid | inline-grid" 25041
nsHTMLCanvasFrame.cpp rendering object for the HTML <canvas> element 21891
nsHTMLCanvasFrame.h rendering object for the HTML <canvas> element 3409
nsHTMLParts.h factory functions for rendering object classes 9381
nsIAnonymousContentCreator.h interface for rendering objects that manually create subtrees of anonymous content 2374
nsIFrame.cpp base class of all rendering objects 481629
nsIFrame.h interface for all rendering objects 224785
nsIFrameInlines.h 10779
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. 3678
nsImageFrame.cpp rendering object for replaced elements with image data 105247
nsImageFrame.h rendering object for replaced elements with image data 17434
nsImageMap.cpp code for HTML client-side image maps 25946
nsImageMap.h code for HTML client-side image maps 3121
nsInlineFrame.cpp rendering object for CSS display:inline objects 41240
nsInlineFrame.h rendering object for CSS display:inline objects 8121
nsIntervalSet.cpp a set of ranges on a number-line 2389
nsIntervalSet.h a set of ranges on a number-line 1931
nsIScrollableFrame.h interface that provides scroll APIs implemented by scrollable frames 25062
nsIScrollPositionListener.h Provides a way to learn about scroll position changes of nsIScrollableFrame's. 749
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 2133
nsLeafFrame.h base class for rendering objects that do not have child lists 3280
nsLineBox.cpp representation of one line within a block frame, a CSS line box 26119
nsLineBox.h representation of one line within a block frame, a CSS line box 52286
nsLineLayout.cpp state and methods used while laying out a single line of a block frame 131462
nsLineLayout.h state and methods used while laying out a single line of a block frame 24491
nsPageContentFrame.cpp 17702
nsPageContentFrame.h Return our canvas frame. 2249
nsPageFrame.cpp 34152
nsPageFrame.h 6334
nsPageSequenceFrame.cpp Members are: {mNumPages, mLargerNumTracks} 29640
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. 8032
nsPlaceholderFrame.cpp rendering object for the point that anchors out-of-flow rendering objects such as floats and absolutely positioned elements 10639
nsPlaceholderFrame.h rendering object for the point that anchors out-of-flow rendering objects such as floats and absolutely positioned elements 7489
nsQueryFrame.h 5510
nsRubyBaseContainerFrame.cpp rendering object for CSS "display: ruby-base-container" 33543
nsRubyBaseContainerFrame.h rendering object for CSS "display: ruby-base-container" 3619
nsRubyBaseFrame.cpp rendering object for CSS "display: ruby-base" 1415
nsRubyBaseFrame.h rendering object for CSS "display: ruby-base" 1339
nsRubyContentFrame.cpp base class for ruby rendering objects that directly contain content 1234
nsRubyContentFrame.h base class for ruby rendering objects that directly contain content 1242
nsRubyFrame.cpp rendering object for CSS "display: ruby" 17311
nsRubyFrame.h rendering object for CSS "display: ruby" 2539
nsRubyTextContainerFrame.cpp rendering object for CSS "display: ruby-text-container" 6620
nsRubyTextContainerFrame.h rendering object for CSS "display: ruby-text-container" 2723
nsRubyTextFrame.cpp rendering object for CSS "display: ruby-text" 2792
nsRubyTextFrame.h rendering object for CSS "display: ruby-text" 1839
nsSplittableFrame.cpp base class for rendering objects that can be split across lines, columns, or pages 9497
nsSplittableFrame.h base class for rendering objects that can be split across lines, columns, or pages 4788
nsSubDocumentFrame.cpp rendering object for replaced elements that contain a document, such as <frame>, <iframe>, and some <object>s 52239
nsSubDocumentFrame.h nsSubDocumentFrame *************************************************************************** 8142
nsTextFrame.cpp rendering object for textual content of elements 415877
nsTextFrame.h An implementation of gfxTextRun::PropertyProvider that computes spacing and hyphenation based on CSS properties for a text frame. 40455
nsTextFrameUtils.cpp static 14857
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). 7234
nsTextRunTransformations.cpp 35494
nsTextRunTransformations.h Builds textruns that transform the text in some way (e.g., capitalize) and then render the text using some other textrun implementation. 10377
nsVideoFrame.cpp rendering object for the HTML <video> element 27363
nsVideoFrame.h rendering object for the HTML <video> element 5060
PrintedSheetFrame.cpp Rendering object for a printed or print-previewed sheet of paper 15243
PrintedSheetFrame.h Rendering object for a printed or print-previewed sheet of paper 2097
ReflowInput.cpp struct containing the input to nsIFrame::Reflow 129559
ReflowInput.h struct containing the input to nsIFrame::Reflow 44906
ReflowOutput.cpp struct containing the output from nsIFrame::Reflow 2468
ReflowOutput.h struct containing the output from nsIFrame::Reflow 10064
RubyUtils.cpp static 7022
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. 7362
ScrollAnchorContainer.cpp Set the appropriate frame flags for a frame that has become or is no longer an anchor node. 27952
ScrollAnchorContainer.h A scroll anchor container finds a descendent element of a scrollable 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/ 6631
ScrollAnimationBezierPhysics.cpp 6047
ScrollAnimationBezierPhysics.h 3504
ScrollAnimationMSDPhysics.cpp 4491
ScrollAnimationMSDPhysics.h 1982
ScrollAnimationPhysics.h 2464
ScrollbarActivity.cpp 14336
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(). 5438
ScrollbarPreferences.h 559
ScrollGeneration.cpp 1433
ScrollGeneration.h 1850
ScrollOrigin.h 2685
ScrollPositionUpdate.cpp static 4679
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. 4574
ScrollSnap.cpp Keeps track of the current best edge to snap to. The criteria for adding an edge depends on the scrolling unit. 15523
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. 1682
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
StickyScrollContainer.cpp compute sticky positioning, both during reflow and when the scrolling container scrolls 15957
StickyScrollContainer.h compute sticky positioning, both during reflow and when the scrolling container scrolls 3848
test 153
TextDrawTarget.h 23983
TextOverflow.cpp 36227
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 12329
ViewportFrame.cpp rendering object that is the root of the frame tree, which contains the document's scrollbars and contains fixed-positioned elements 19019
ViewportFrame.h rendering object that is the root of the frame tree, which contains the document's scrollbars and contains fixed-positioned elements 4276
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 74888