The Tor Browser / annotate

layout/generic/nsFrame.h@b8a032363ba2 (annotated)

layout/generic/nsFrame.h

Thu, 22 Jan 2015 13:21:57 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 22 Jan 2015 13:21:57 +0100
branch
TOR_BUG_9701
changeset 15
b8a032363ba2
permissions
-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 /* base class of all rendering objects */
michael@0 7
michael@0 8 #ifndef nsFrame_h___
michael@0 9 #define nsFrame_h___
michael@0 10
michael@0 11 #include "mozilla/Attributes.h"
michael@0 12 #include "mozilla/EventForwards.h"
michael@0 13 #include "mozilla/Likely.h"
michael@0 14 #include "nsBox.h"
michael@0 15 #include "prlog.h"
michael@0 16
michael@0 17 #include "nsIPresShell.h"
michael@0 18 #include "nsHTMLReflowState.h"
michael@0 19 #include "nsHTMLParts.h"
michael@0 20 #include "nsISelectionDisplay.h"
michael@0 21
michael@0 22 /**
michael@0 23 * nsFrame logging constants. We redefine the nspr
michael@0 24 * PRLogModuleInfo.level field to be a bitfield. Each bit controls a
michael@0 25 * specific type of logging. Each logging operation has associated
michael@0 26 * inline methods defined below.
michael@0 27 */
michael@0 28 #define NS_FRAME_TRACE_CALLS 0x1
michael@0 29 #define NS_FRAME_TRACE_PUSH_PULL 0x2
michael@0 30 #define NS_FRAME_TRACE_CHILD_REFLOW 0x4
michael@0 31 #define NS_FRAME_TRACE_NEW_FRAMES 0x8
michael@0 32
michael@0 33 #define NS_FRAME_LOG_TEST(_lm,_bit) (int((_lm)->level) & (_bit))
michael@0 34
michael@0 35 #ifdef DEBUG
michael@0 36 #define NS_FRAME_LOG(_bit,_args) \
michael@0 37 PR_BEGIN_MACRO \
michael@0 38 if (NS_FRAME_LOG_TEST(nsFrame::GetLogModuleInfo(),_bit)) { \
michael@0 39 PR_LogPrint _args; \
michael@0 40 } \
michael@0 41 PR_END_MACRO
michael@0 42 #else
michael@0 43 #define NS_FRAME_LOG(_bit,_args)
michael@0 44 #endif
michael@0 45
michael@0 46 // XXX Need to rework this so that logging is free when it's off
michael@0 47 #ifdef DEBUG
michael@0 48 #define NS_FRAME_TRACE_IN(_method) Trace(_method, true)
michael@0 49
michael@0 50 #define NS_FRAME_TRACE_OUT(_method) Trace(_method, false)
michael@0 51
michael@0 52 // XXX remove me
michael@0 53 #define NS_FRAME_TRACE_MSG(_bit,_args) \
michael@0 54 PR_BEGIN_MACRO \
michael@0 55 if (NS_FRAME_LOG_TEST(nsFrame::GetLogModuleInfo(),_bit)) { \
michael@0 56 TraceMsg _args; \
michael@0 57 } \
michael@0 58 PR_END_MACRO
michael@0 59
michael@0 60 #define NS_FRAME_TRACE(_bit,_args) \
michael@0 61 PR_BEGIN_MACRO \
michael@0 62 if (NS_FRAME_LOG_TEST(nsFrame::GetLogModuleInfo(),_bit)) { \
michael@0 63 TraceMsg _args; \
michael@0 64 } \
michael@0 65 PR_END_MACRO
michael@0 66
michael@0 67 #define NS_FRAME_TRACE_REFLOW_IN(_method) Trace(_method, true)
michael@0 68
michael@0 69 #define NS_FRAME_TRACE_REFLOW_OUT(_method, _status) \
michael@0 70 Trace(_method, false, _status)
michael@0 71
michael@0 72 #else
michael@0 73 #define NS_FRAME_TRACE(_bits,_args)
michael@0 74 #define NS_FRAME_TRACE_IN(_method)
michael@0 75 #define NS_FRAME_TRACE_OUT(_method)
michael@0 76 #define NS_FRAME_TRACE_MSG(_bits,_args)
michael@0 77 #define NS_FRAME_TRACE_REFLOW_IN(_method)
michael@0 78 #define NS_FRAME_TRACE_REFLOW_OUT(_method, _status)
michael@0 79 #endif
michael@0 80
michael@0 81 // Frame allocation boilerplate macros. Every subclass of nsFrame
michael@0 82 // must define its own operator new and GetAllocatedSize. If they do
michael@0 83 // not, the per-frame recycler lists in nsPresArena will not work
michael@0 84 // correctly, with potentially catastrophic consequences (not enough
michael@0 85 // memory is allocated for a frame object).
michael@0 86
michael@0 87 #define NS_DECL_FRAMEARENA_HELPERS \
michael@0 88 void* operator new(size_t, nsIPresShell*) MOZ_MUST_OVERRIDE; \
michael@0 89 virtual nsQueryFrame::FrameIID GetFrameId() MOZ_MUST_OVERRIDE;
michael@0 90
michael@0 91 #define NS_IMPL_FRAMEARENA_HELPERS(class) \
michael@0 92 void* class::operator new(size_t sz, nsIPresShell* aShell) \
michael@0 93 { return aShell->AllocateFrame(nsQueryFrame::class##_id, sz); } \
michael@0 94 nsQueryFrame::FrameIID class::GetFrameId() \
michael@0 95 { return nsQueryFrame::class##_id; }
michael@0 96
michael@0 97 //----------------------------------------------------------------------
michael@0 98
michael@0 99 struct nsBoxLayoutMetrics;
michael@0 100 class nsDisplayBackgroundImage;
michael@0 101 struct nsRect;
michael@0 102
michael@0 103 /**
michael@0 104 * Implementation of a simple frame that's not splittable and has no
michael@0 105 * child frames.
michael@0 106 *
michael@0 107 * Sets the NS_FRAME_SYNCHRONIZE_FRAME_AND_VIEW bit, so the default
michael@0 108 * behavior is to keep the frame and view position and size in sync.
michael@0 109 */
michael@0 110 class nsFrame : public nsBox
michael@0 111 {
michael@0 112 public:
michael@0 113 /**
michael@0 114 * Create a new "empty" frame that maps a given piece of content into a
michael@0 115 * 0,0 area.
michael@0 116 */
michael@0 117 friend nsIFrame* NS_NewEmptyFrame(nsIPresShell* aShell,
michael@0 118 nsStyleContext* aContext);
michael@0 119
michael@0 120 private:
michael@0 121 // Left undefined; nsFrame objects are never allocated from the heap.
michael@0 122 void* operator new(size_t sz) CPP_THROW_NEW;
michael@0 123
michael@0 124 protected:
michael@0 125 // Overridden to prevent the global delete from being called, since
michael@0 126 // the memory came out of an arena instead of the heap.
michael@0 127 //
michael@0 128 // Ideally this would be private and undefined, like the normal
michael@0 129 // operator new. Unfortunately, the C++ standard requires an
michael@0 130 // overridden operator delete to be accessible to any subclass that
michael@0 131 // defines a virtual destructor, so we can only make it protected;
michael@0 132 // worse, some C++ compilers will synthesize calls to this function
michael@0 133 // from the "deleting destructors" that they emit in case of
michael@0 134 // delete-expressions, so it can't even be undefined.
michael@0 135 void operator delete(void* aPtr, size_t sz);
michael@0 136
michael@0 137 public:
michael@0 138
michael@0 139 // nsQueryFrame
michael@0 140 NS_DECL_QUERYFRAME
michael@0 141 NS_DECL_FRAMEARENA_HELPERS
michael@0 142
michael@0 143 // nsIFrame
michael@0 144 virtual void Init(nsIContent* aContent,
michael@0 145 nsIFrame* aParent,
michael@0 146 nsIFrame* asPrevInFlow) MOZ_OVERRIDE;
michael@0 147 virtual nsresult SetInitialChildList(ChildListID aListID,
michael@0 148 nsFrameList& aChildList) MOZ_OVERRIDE;
michael@0 149 virtual nsresult AppendFrames(ChildListID aListID,
michael@0 150 nsFrameList& aFrameList) MOZ_OVERRIDE;
michael@0 151 virtual nsresult InsertFrames(ChildListID aListID,
michael@0 152 nsIFrame* aPrevFrame,
michael@0 153 nsFrameList& aFrameList) MOZ_OVERRIDE;
michael@0 154 virtual nsresult RemoveFrame(ChildListID aListID,
michael@0 155 nsIFrame* aOldFrame) MOZ_OVERRIDE;
michael@0 156 virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
michael@0 157 virtual nsStyleContext* GetAdditionalStyleContext(int32_t aIndex) const MOZ_OVERRIDE;
michael@0 158 virtual void SetAdditionalStyleContext(int32_t aIndex,
michael@0 159 nsStyleContext* aStyleContext) MOZ_OVERRIDE;
michael@0 160 virtual void SetParent(nsIFrame* aParent) MOZ_OVERRIDE;
michael@0 161 virtual nscoord GetBaseline() const MOZ_OVERRIDE;
michael@0 162 virtual const nsFrameList& GetChildList(ChildListID aListID) const MOZ_OVERRIDE;
michael@0 163 virtual void GetChildLists(nsTArray<ChildList>* aLists) const MOZ_OVERRIDE;
michael@0 164
michael@0 165 virtual nsresult HandleEvent(nsPresContext* aPresContext,
michael@0 166 mozilla::WidgetGUIEvent* aEvent,
michael@0 167 nsEventStatus* aEventStatus) MOZ_OVERRIDE;
michael@0 168 virtual nsresult GetContentForEvent(mozilla::WidgetEvent* aEvent,
michael@0 169 nsIContent** aContent) MOZ_OVERRIDE;
michael@0 170 virtual nsresult GetCursor(const nsPoint& aPoint,
michael@0 171 nsIFrame::Cursor& aCursor) MOZ_OVERRIDE;
michael@0 172
michael@0 173 virtual nsresult GetPointFromOffset(int32_t inOffset,
michael@0 174 nsPoint* outPoint) MOZ_OVERRIDE;
michael@0 175
michael@0 176 virtual nsresult GetChildFrameContainingOffset(int32_t inContentOffset,
michael@0 177 bool inHint,
michael@0 178 int32_t* outFrameContentOffset,
michael@0 179 nsIFrame** outChildFrame) MOZ_OVERRIDE;
michael@0 180
michael@0 181 static nsresult GetNextPrevLineFromeBlockFrame(nsPresContext* aPresContext,
michael@0 182 nsPeekOffsetStruct *aPos,
michael@0 183 nsIFrame *aBlockFrame,
michael@0 184 int32_t aLineStart,
michael@0 185 int8_t aOutSideLimit
michael@0 186 );
michael@0 187
michael@0 188 virtual nsresult CharacterDataChanged(CharacterDataChangeInfo* aInfo) MOZ_OVERRIDE;
michael@0 189 virtual nsresult AttributeChanged(int32_t aNameSpaceID,
michael@0 190 nsIAtom* aAttribute,
michael@0 191 int32_t aModType) MOZ_OVERRIDE;
michael@0 192 virtual nsSplittableType GetSplittableType() const MOZ_OVERRIDE;
michael@0 193 virtual nsIFrame* GetPrevContinuation() const MOZ_OVERRIDE;
michael@0 194 virtual void SetPrevContinuation(nsIFrame*) MOZ_OVERRIDE;
michael@0 195 virtual nsIFrame* GetNextContinuation() const MOZ_OVERRIDE;
michael@0 196 virtual void SetNextContinuation(nsIFrame*) MOZ_OVERRIDE;
michael@0 197 virtual nsIFrame* GetPrevInFlowVirtual() const MOZ_OVERRIDE;
michael@0 198 virtual void SetPrevInFlow(nsIFrame*) MOZ_OVERRIDE;
michael@0 199 virtual nsIFrame* GetNextInFlowVirtual() const MOZ_OVERRIDE;
michael@0 200 virtual void SetNextInFlow(nsIFrame*) MOZ_OVERRIDE;
michael@0 201 virtual nsIAtom* GetType() const MOZ_OVERRIDE;
michael@0 202
michael@0 203 virtual nsresult IsSelectable(bool* aIsSelectable, uint8_t* aSelectStyle) const MOZ_OVERRIDE;
michael@0 204
michael@0 205 virtual nsresult GetSelectionController(nsPresContext *aPresContext, nsISelectionController **aSelCon) MOZ_OVERRIDE;
michael@0 206
michael@0 207 virtual FrameSearchResult PeekOffsetNoAmount(bool aForward, int32_t* aOffset) MOZ_OVERRIDE;
michael@0 208 virtual FrameSearchResult PeekOffsetCharacter(bool aForward, int32_t* aOffset,
michael@0 209 bool aRespectClusters = true) MOZ_OVERRIDE;
michael@0 210 virtual FrameSearchResult PeekOffsetWord(bool aForward, bool aWordSelectEatSpace, bool aIsKeyboardSelect,
michael@0 211 int32_t* aOffset, PeekWordState *aState) MOZ_OVERRIDE;
michael@0 212 /**
michael@0 213 * Check whether we should break at a boundary between punctuation and
michael@0 214 * non-punctuation. Only call it at a punctuation boundary
michael@0 215 * (i.e. exactly one of the previous and next characters are punctuation).
michael@0 216 * @param aForward true if we're moving forward in content order
michael@0 217 * @param aPunctAfter true if the next character is punctuation
michael@0 218 * @param aWhitespaceAfter true if the next character is whitespace
michael@0 219 */
michael@0 220 bool BreakWordBetweenPunctuation(const PeekWordState* aState,
michael@0 221 bool aForward,
michael@0 222 bool aPunctAfter, bool aWhitespaceAfter,
michael@0 223 bool aIsKeyboardSelect);
michael@0 224
michael@0 225 virtual nsresult CheckVisibility(nsPresContext* aContext, int32_t aStartIndex, int32_t aEndIndex, bool aRecurse, bool *aFinished, bool *_retval) MOZ_OVERRIDE;
michael@0 226
michael@0 227 virtual nsresult GetOffsets(int32_t &aStart, int32_t &aEnd) const MOZ_OVERRIDE;
michael@0 228 virtual void ChildIsDirty(nsIFrame* aChild) MOZ_OVERRIDE;
michael@0 229
michael@0 230 #ifdef ACCESSIBILITY
michael@0 231 virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;
michael@0 232 #endif
michael@0 233
michael@0 234 virtual nsIFrame* GetParentStyleContextFrame() const MOZ_OVERRIDE {
michael@0 235 return DoGetParentStyleContextFrame();
michael@0 236 }
michael@0 237
michael@0 238 /**
michael@0 239 * Do the work for getting the parent style context frame so that
michael@0 240 * other frame's |GetParentStyleContextFrame| methods can call this
michael@0 241 * method on *another* frame. (This function handles out-of-flow
michael@0 242 * frames by using the frame manager's placeholder map and it also
michael@0 243 * handles block-within-inline and generated content wrappers.)
michael@0 244 */
michael@0 245 nsIFrame* DoGetParentStyleContextFrame() const;
michael@0 246
michael@0 247 virtual bool IsEmpty() MOZ_OVERRIDE;
michael@0 248 virtual bool IsSelfEmpty() MOZ_OVERRIDE;
michael@0 249
michael@0 250 virtual void MarkIntrinsicWidthsDirty() MOZ_OVERRIDE;
michael@0 251 virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
michael@0 252 virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
michael@0 253 virtual void AddInlineMinWidth(nsRenderingContext *aRenderingContext,
michael@0 254 InlineMinWidthData *aData) MOZ_OVERRIDE;
michael@0 255 virtual void AddInlinePrefWidth(nsRenderingContext *aRenderingContext,
michael@0 256 InlinePrefWidthData *aData) MOZ_OVERRIDE;
michael@0 257 virtual IntrinsicWidthOffsetData
michael@0 258 IntrinsicWidthOffsets(nsRenderingContext* aRenderingContext) MOZ_OVERRIDE;
michael@0 259 virtual mozilla::IntrinsicSize GetIntrinsicSize() MOZ_OVERRIDE;
michael@0 260 virtual nsSize GetIntrinsicRatio() MOZ_OVERRIDE;
michael@0 261
michael@0 262 virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
michael@0 263 nsSize aCBSize, nscoord aAvailableWidth,
michael@0 264 nsSize aMargin, nsSize aBorder, nsSize aPadding,
michael@0 265 uint32_t aFlags) MOZ_OVERRIDE;
michael@0 266
michael@0 267 // Compute tight bounds assuming this frame honours its border, background
michael@0 268 // and outline, its children's tight bounds, and nothing else.
michael@0 269 nsRect ComputeSimpleTightBounds(gfxContext* aContext) const;
michael@0 270
michael@0 271 /**
michael@0 272 * A helper, used by |nsFrame::ComputeSize| (for frames that need to
michael@0 273 * override only this part of ComputeSize), that computes the size
michael@0 274 * that should be returned when 'width', 'height', and
michael@0 275 * min/max-width/height are all 'auto' or equivalent.
michael@0 276 *
michael@0 277 * In general, frames that can accept any computed width/height should
michael@0 278 * override only ComputeAutoSize, and frames that cannot do so need to
michael@0 279 * override ComputeSize to enforce their width/height invariants.
michael@0 280 *
michael@0 281 * Implementations may optimize by returning a garbage width if
michael@0 282 * StylePosition()->mWidth.GetUnit() != eStyleUnit_Auto, and
michael@0 283 * likewise for height, since in such cases the result is guaranteed
michael@0 284 * to be unused.
michael@0 285 */
michael@0 286 virtual nsSize ComputeAutoSize(nsRenderingContext *aRenderingContext,
michael@0 287 nsSize aCBSize, nscoord aAvailableWidth,
michael@0 288 nsSize aMargin, nsSize aBorder,
michael@0 289 nsSize aPadding, bool aShrinkWrap);
michael@0 290
michael@0 291 /**
michael@0 292 * Utility function for ComputeAutoSize implementations. Return
michael@0 293 * max(GetMinWidth(), min(aWidthInCB, GetPrefWidth()))
michael@0 294 */
michael@0 295 nscoord ShrinkWidthToFit(nsRenderingContext *aRenderingContext,
michael@0 296 nscoord aWidthInCB);
michael@0 297
michael@0 298 virtual nsresult WillReflow(nsPresContext* aPresContext) MOZ_OVERRIDE;
michael@0 299 /**
michael@0 300 * Calculates the size of this frame after reflowing (calling Reflow on, and
michael@0 301 * updating the size and position of) its children, as necessary. The
michael@0 302 * calculated size is returned to the caller via the nsHTMLReflowMetrics
michael@0 303 * outparam. (The caller is responsible for setting the actual size and
michael@0 304 * position of this frame.)
michael@0 305 *
michael@0 306 * A frame's children must _all_ be reflowed if the frame is dirty (the
michael@0 307 * NS_FRAME_IS_DIRTY bit is set on it). Otherwise, individual children
michael@0 308 * must be reflowed if they are dirty or have the NS_FRAME_HAS_DIRTY_CHILDREN
michael@0 309 * bit set on them. Otherwise, whether children need to be reflowed depends
michael@0 310 * on the frame's type (it's up to individual Reflow methods), and on what
michael@0 311 * has changed. For example, a change in the width of the frame may require
michael@0 312 * all of its children to be reflowed (even those without dirty bits set on
michael@0 313 * them), whereas a change in its height might not.
michael@0 314 * (nsHTMLReflowState::ShouldReflowAllKids may be helpful in deciding whether
michael@0 315 * to reflow all the children, but for some frame types it might result in
michael@0 316 * over-reflow.)
michael@0 317 *
michael@0 318 * Note: if it's only the overflow rect(s) of a frame that need to be
michael@0 319 * updated, then UpdateOverflow should be called instead of Reflow.
michael@0 320 */
michael@0 321 virtual nsresult Reflow(nsPresContext* aPresContext,
michael@0 322 nsHTMLReflowMetrics& aDesiredSize,
michael@0 323 const nsHTMLReflowState& aReflowState,
michael@0 324 nsReflowStatus& aStatus) MOZ_OVERRIDE;
michael@0 325 virtual nsresult DidReflow(nsPresContext* aPresContext,
michael@0 326 const nsHTMLReflowState* aReflowState,
michael@0 327 nsDidReflowStatus aStatus) MOZ_OVERRIDE;
michael@0 328
michael@0 329 /**
michael@0 330 * NOTE: aStatus is assumed to be already-initialized. The reflow statuses of
michael@0 331 * any reflowed absolute children will be merged into aStatus; aside from
michael@0 332 * that, this method won't modify aStatus.
michael@0 333 */
michael@0 334 void ReflowAbsoluteFrames(nsPresContext* aPresContext,
michael@0 335 nsHTMLReflowMetrics& aDesiredSize,
michael@0 336 const nsHTMLReflowState& aReflowState,
michael@0 337 nsReflowStatus& aStatus,
michael@0 338 bool aConstrainHeight = true);
michael@0 339 void FinishReflowWithAbsoluteFrames(nsPresContext* aPresContext,
michael@0 340 nsHTMLReflowMetrics& aDesiredSize,
michael@0 341 const nsHTMLReflowState& aReflowState,
michael@0 342 nsReflowStatus& aStatus,
michael@0 343 bool aConstrainHeight = true);
michael@0 344 virtual bool CanContinueTextRun() const MOZ_OVERRIDE;
michael@0 345
michael@0 346 virtual bool UpdateOverflow() MOZ_OVERRIDE;
michael@0 347
michael@0 348 // Selection Methods
michael@0 349
michael@0 350 NS_IMETHOD HandlePress(nsPresContext* aPresContext,
michael@0 351 mozilla::WidgetGUIEvent* aEvent,
michael@0 352 nsEventStatus* aEventStatus);
michael@0 353
michael@0 354 NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
michael@0 355 mozilla::WidgetGUIEvent* aEvent,
michael@0 356 nsEventStatus* aEventStatus,
michael@0 357 bool aControlHeld);
michael@0 358
michael@0 359 NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
michael@0 360 mozilla::WidgetGUIEvent* aEvent,
michael@0 361 nsEventStatus* aEventStatus);
michael@0 362
michael@0 363 NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
michael@0 364 mozilla::WidgetGUIEvent* aEvent,
michael@0 365 nsEventStatus* aEventStatus);
michael@0 366
michael@0 367 enum { SELECT_ACCUMULATE = 0x01 };
michael@0 368
michael@0 369 nsresult PeekBackwardAndForward(nsSelectionAmount aAmountBack,
michael@0 370 nsSelectionAmount aAmountForward,
michael@0 371 int32_t aStartPos,
michael@0 372 nsPresContext* aPresContext,
michael@0 373 bool aJumpLines,
michael@0 374 uint32_t aSelectFlags);
michael@0 375
michael@0 376 nsresult SelectByTypeAtPoint(nsPresContext* aPresContext,
michael@0 377 const nsPoint& aPoint,
michael@0 378 nsSelectionAmount aBeginAmountType,
michael@0 379 nsSelectionAmount aEndAmountType,
michael@0 380 uint32_t aSelectFlags);
michael@0 381
michael@0 382 // Helper for GetContentAndOffsetsFromPoint; calculation of content offsets
michael@0 383 // in this function assumes there is no child frame that can be targeted.
michael@0 384 virtual ContentOffsets CalcContentOffsetsFromFramePoint(nsPoint aPoint);
michael@0 385
michael@0 386 // Box layout methods
michael@0 387 virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 388 virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 389 virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 390 virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 391 virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 392
michael@0 393 // We compute and store the HTML content's overflow area. So don't
michael@0 394 // try to compute it in the box code.
michael@0 395 virtual bool ComputesOwnOverflowArea() MOZ_OVERRIDE { return true; }
michael@0 396
michael@0 397 //--------------------------------------------------
michael@0 398 // Additional methods
michael@0 399
michael@0 400 // Helper function that tests if the frame tree is too deep; if it is
michael@0 401 // it marks the frame as "unflowable", zeroes out the metrics, sets
michael@0 402 // the reflow status, and returns true. Otherwise, the frame is
michael@0 403 // unmarked "unflowable" and the metrics and reflow status are not
michael@0 404 // touched and false is returned.
michael@0 405 bool IsFrameTreeTooDeep(const nsHTMLReflowState& aReflowState,
michael@0 406 nsHTMLReflowMetrics& aMetrics,
michael@0 407 nsReflowStatus& aStatus);
michael@0 408
michael@0 409 // Incorporate the child overflow areas into aOverflowAreas.
michael@0 410 // If the child does not have a overflow, use the child area.
michael@0 411 void ConsiderChildOverflow(nsOverflowAreas& aOverflowAreas,
michael@0 412 nsIFrame* aChildFrame);
michael@0 413
michael@0 414 /**
michael@0 415 * @return true if we should avoid a page/column break in this frame.
michael@0 416 */
michael@0 417 bool ShouldAvoidBreakInside(const nsHTMLReflowState& aReflowState) const {
michael@0 418 return !aReflowState.mFlags.mIsTopOfPage &&
michael@0 419 NS_STYLE_PAGE_BREAK_AVOID == StyleDisplay()->mBreakInside &&
michael@0 420 !GetPrevInFlow();
michael@0 421 }
michael@0 422
michael@0 423 #ifdef DEBUG
michael@0 424 /**
michael@0 425 * Tracing method that writes a method enter/exit routine to the
michael@0 426 * nspr log using the nsIFrame log module. The tracing is only
michael@0 427 * done when the NS_FRAME_TRACE_CALLS bit is set in the log module's
michael@0 428 * level field.
michael@0 429 */
michael@0 430 void Trace(const char* aMethod, bool aEnter);
michael@0 431 void Trace(const char* aMethod, bool aEnter, nsReflowStatus aStatus);
michael@0 432 void TraceMsg(const char* fmt, ...);
michael@0 433
michael@0 434 // Helper function that verifies that each frame in the list has the
michael@0 435 // NS_FRAME_IS_DIRTY bit set
michael@0 436 static void VerifyDirtyBitSet(const nsFrameList& aFrameList);
michael@0 437
michael@0 438 static void XMLQuote(nsString& aString);
michael@0 439
michael@0 440 /**
michael@0 441 * Dump out the "base classes" regression data. This should dump
michael@0 442 * out the interior data, not the "frame" XML container. And it
michael@0 443 * should call the base classes same named method before doing
michael@0 444 * anything specific in a derived class. This means that derived
michael@0 445 * classes need not override DumpRegressionData unless they need
michael@0 446 * some custom behavior that requires changing how the outer "frame"
michael@0 447 * XML container is dumped.
michael@0 448 */
michael@0 449 virtual void DumpBaseRegressionData(nsPresContext* aPresContext, FILE* out, int32_t aIndent);
michael@0 450
michael@0 451 // Display Reflow Debugging
michael@0 452 static void* DisplayReflowEnter(nsPresContext* aPresContext,
michael@0 453 nsIFrame* aFrame,
michael@0 454 const nsHTMLReflowState& aReflowState);
michael@0 455 static void* DisplayLayoutEnter(nsIFrame* aFrame);
michael@0 456 static void* DisplayIntrinsicWidthEnter(nsIFrame* aFrame,
michael@0 457 const char* aType);
michael@0 458 static void* DisplayIntrinsicSizeEnter(nsIFrame* aFrame,
michael@0 459 const char* aType);
michael@0 460 static void DisplayReflowExit(nsPresContext* aPresContext,
michael@0 461 nsIFrame* aFrame,
michael@0 462 nsHTMLReflowMetrics& aMetrics,
michael@0 463 uint32_t aStatus,
michael@0 464 void* aFrameTreeNode);
michael@0 465 static void DisplayLayoutExit(nsIFrame* aFrame,
michael@0 466 void* aFrameTreeNode);
michael@0 467 static void DisplayIntrinsicWidthExit(nsIFrame* aFrame,
michael@0 468 const char* aType,
michael@0 469 nscoord aResult,
michael@0 470 void* aFrameTreeNode);
michael@0 471 static void DisplayIntrinsicSizeExit(nsIFrame* aFrame,
michael@0 472 const char* aType,
michael@0 473 nsSize aResult,
michael@0 474 void* aFrameTreeNode);
michael@0 475
michael@0 476 static void DisplayReflowStartup();
michael@0 477 static void DisplayReflowShutdown();
michael@0 478 #endif
michael@0 479
michael@0 480 /**
michael@0 481 * Adds display items for standard CSS background if necessary.
michael@0 482 * Does not check IsVisibleForPainting.
michael@0 483 * @param aForceBackground draw the background even if the frame
michael@0 484 * background style appears to have no background --- this is useful
michael@0 485 * for frames that might receive a propagated background via
michael@0 486 * nsCSSRendering::FindBackground
michael@0 487 * @return whether a themed background item was created.
michael@0 488 */
michael@0 489 bool DisplayBackgroundUnconditional(nsDisplayListBuilder* aBuilder,
michael@0 490 const nsDisplayListSet& aLists,
michael@0 491 bool aForceBackground);
michael@0 492 /**
michael@0 493 * Adds display items for standard CSS borders, background and outline for
michael@0 494 * for this frame, as necessary. Checks IsVisibleForPainting and won't
michael@0 495 * display anything if the frame is not visible.
michael@0 496 * @param aForceBackground draw the background even if the frame
michael@0 497 * background style appears to have no background --- this is useful
michael@0 498 * for frames that might receive a propagated background via
michael@0 499 * nsCSSRendering::FindBackground
michael@0 500 */
michael@0 501 void DisplayBorderBackgroundOutline(nsDisplayListBuilder* aBuilder,
michael@0 502 const nsDisplayListSet& aLists,
michael@0 503 bool aForceBackground = false);
michael@0 504 /**
michael@0 505 * Add a display item for the CSS outline. Does not check visibility.
michael@0 506 */
michael@0 507 void DisplayOutlineUnconditional(nsDisplayListBuilder* aBuilder,
michael@0 508 const nsDisplayListSet& aLists);
michael@0 509 /**
michael@0 510 * Add a display item for the CSS outline, after calling
michael@0 511 * IsVisibleForPainting to confirm we are visible.
michael@0 512 */
michael@0 513 void DisplayOutline(nsDisplayListBuilder* aBuilder,
michael@0 514 const nsDisplayListSet& aLists);
michael@0 515
michael@0 516 /**
michael@0 517 * Adjust the given parent frame to the right style context parent frame for
michael@0 518 * the child, given the pseudo-type of the prospective child. This handles
michael@0 519 * things like walking out of table pseudos and so forth.
michael@0 520 *
michael@0 521 * @param aProspectiveParent what GetParent() on the child returns.
michael@0 522 * Must not be null.
michael@0 523 * @param aChildPseudo the child's pseudo type, if any.
michael@0 524 */
michael@0 525 static nsIFrame*
michael@0 526 CorrectStyleParentFrame(nsIFrame* aProspectiveParent, nsIAtom* aChildPseudo);
michael@0 527
michael@0 528 protected:
michael@0 529 // Protected constructor and destructor
michael@0 530 nsFrame(nsStyleContext* aContext);
michael@0 531 virtual ~nsFrame();
michael@0 532
michael@0 533 /**
michael@0 534 * To be called by |BuildDisplayLists| of this class or derived classes to add
michael@0 535 * a translucent overlay if this frame's content is selected.
michael@0 536 * @param aContentType an nsISelectionDisplay DISPLAY_ constant identifying
michael@0 537 * which kind of content this is for
michael@0 538 */
michael@0 539 void DisplaySelectionOverlay(nsDisplayListBuilder* aBuilder,
michael@0 540 nsDisplayList* aList, uint16_t aContentType = nsISelectionDisplay::DISPLAY_FRAMES);
michael@0 541
michael@0 542 int16_t DisplaySelection(nsPresContext* aPresContext, bool isOkToTurnOn = false);
michael@0 543
michael@0 544 // Style post processing hook
michael@0 545 virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE;
michael@0 546
michael@0 547 public:
michael@0 548 //given a frame five me the first/last leaf available
michael@0 549 //XXX Robert O'Callahan wants to move these elsewhere
michael@0 550 static void GetLastLeaf(nsPresContext* aPresContext, nsIFrame **aFrame);
michael@0 551 static void GetFirstLeaf(nsPresContext* aPresContext, nsIFrame **aFrame);
michael@0 552
michael@0 553 // Return the line number of the aFrame, and (optionally) the containing block
michael@0 554 // frame.
michael@0 555 // If aScrollLock is true, don't break outside scrollframes when looking for a
michael@0 556 // containing block frame.
michael@0 557 static int32_t GetLineNumber(nsIFrame *aFrame,
michael@0 558 bool aLockScroll,
michael@0 559 nsIFrame** aContainingBlock = nullptr);
michael@0 560
michael@0 561 /**
michael@0 562 * Returns true if aFrame should apply overflow clipping.
michael@0 563 */
michael@0 564 static bool ShouldApplyOverflowClipping(const nsIFrame* aFrame,
michael@0 565 const nsStyleDisplay* aDisp)
michael@0 566 {
michael@0 567 // clip overflow:-moz-hidden-unscrollable ...
michael@0 568 if (MOZ_UNLIKELY(aDisp->mOverflowX == NS_STYLE_OVERFLOW_CLIP)) {
michael@0 569 return true;
michael@0 570 }
michael@0 571
michael@0 572 // and overflow:hidden that we should interpret as -moz-hidden-unscrollable
michael@0 573 if (aDisp->mOverflowX == NS_STYLE_OVERFLOW_HIDDEN &&
michael@0 574 aDisp->mOverflowY == NS_STYLE_OVERFLOW_HIDDEN) {
michael@0 575 // REVIEW: these are the frame types that set up clipping.
michael@0 576 nsIAtom* type = aFrame->GetType();
michael@0 577 if (type == nsGkAtoms::tableFrame ||
michael@0 578 type == nsGkAtoms::tableCellFrame ||
michael@0 579 type == nsGkAtoms::bcTableCellFrame ||
michael@0 580 type == nsGkAtoms::svgOuterSVGFrame ||
michael@0 581 type == nsGkAtoms::svgInnerSVGFrame ||
michael@0 582 type == nsGkAtoms::svgForeignObjectFrame) {
michael@0 583 return true;
michael@0 584 }
michael@0 585 if (aFrame->IsFrameOfType(nsIFrame::eReplacedContainsBlock)) {
michael@0 586 if (type == nsGkAtoms::textInputFrame) {
michael@0 587 // It always has an anonymous scroll frame that handles any overflow.
michael@0 588 return false;
michael@0 589 }
michael@0 590 return true;
michael@0 591 }
michael@0 592 }
michael@0 593
michael@0 594 if ((aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT)) {
michael@0 595 return false;
michael@0 596 }
michael@0 597
michael@0 598 // If we're paginated and a block, and have NS_BLOCK_CLIP_PAGINATED_OVERFLOW
michael@0 599 // set, then we want to clip our overflow.
michael@0 600 return
michael@0 601 (aFrame->GetStateBits() & NS_BLOCK_CLIP_PAGINATED_OVERFLOW) != 0 &&
michael@0 602 aFrame->PresContext()->IsPaginated() &&
michael@0 603 aFrame->GetType() == nsGkAtoms::blockFrame;
michael@0 604 }
michael@0 605
michael@0 606 protected:
michael@0 607
michael@0 608 // Test if we are selecting a table object:
michael@0 609 // Most table/cell selection requires that Ctrl (Cmd on Mac) key is down
michael@0 610 // during a mouse click or drag. Exception is using Shift+click when
michael@0 611 // already in "table/cell selection mode" to extend a block selection
michael@0 612 // Get the parent content node and offset of the frame
michael@0 613 // of the enclosing cell or table (if not inside a cell)
michael@0 614 // aTarget tells us what table element to select (currently only cell and table supported)
michael@0 615 // (enums for this are defined in nsIFrame.h)
michael@0 616 NS_IMETHOD GetDataForTableSelection(const nsFrameSelection* aFrameSelection,
michael@0 617 nsIPresShell* aPresShell,
michael@0 618 mozilla::WidgetMouseEvent* aMouseEvent,
michael@0 619 nsIContent** aParentContent,
michael@0 620 int32_t* aContentOffset,
michael@0 621 int32_t* aTarget);
michael@0 622
michael@0 623 // Fills aCursor with the appropriate information from ui
michael@0 624 static void FillCursorInformationFromStyle(const nsStyleUserInterface* ui,
michael@0 625 nsIFrame::Cursor& aCursor);
michael@0 626 NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 627
michael@0 628 #ifdef DEBUG_LAYOUT
michael@0 629 virtual void GetBoxName(nsAutoString& aName) MOZ_OVERRIDE;
michael@0 630 #endif
michael@0 631
michael@0 632 void InitBoxMetrics(bool aClear);
michael@0 633 nsBoxLayoutMetrics* BoxMetrics() const;
michael@0 634
michael@0 635 // Fire DOM event. If no aContent argument use frame's mContent.
michael@0 636 void FireDOMEvent(const nsAString& aDOMEventName, nsIContent *aContent = nullptr);
michael@0 637
michael@0 638 private:
michael@0 639 nsresult BoxReflow(nsBoxLayoutState& aState,
michael@0 640 nsPresContext* aPresContext,
michael@0 641 nsHTMLReflowMetrics& aDesiredSize,
michael@0 642 nsRenderingContext* aRenderingContext,
michael@0 643 nscoord aX,
michael@0 644 nscoord aY,
michael@0 645 nscoord aWidth,
michael@0 646 nscoord aHeight,
michael@0 647 bool aMoveFrame = true);
michael@0 648
michael@0 649 NS_IMETHODIMP RefreshSizeCache(nsBoxLayoutState& aState);
michael@0 650
michael@0 651 virtual nsILineIterator* GetLineIterator() MOZ_OVERRIDE;
michael@0 652
michael@0 653 #ifdef DEBUG_FRAME_DUMP
michael@0 654 public:
michael@0 655 /**
michael@0 656 * Get a printable from of the name of the frame type.
michael@0 657 * XXX This should be eliminated and we use GetType() instead...
michael@0 658 */
michael@0 659 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
michael@0 660 nsresult MakeFrameName(const nsAString& aKind, nsAString& aResult) const;
michael@0 661 // Helper function to return the index in parent of the frame's content
michael@0 662 // object. Returns -1 on error or if the frame doesn't have a content object
michael@0 663 static int32_t ContentIndexInContainer(const nsIFrame* aFrame);
michael@0 664 #endif
michael@0 665
michael@0 666 #ifdef DEBUG
michael@0 667 public:
michael@0 668 /**
michael@0 669 * Return the state bits that are relevant to regression tests (that
michael@0 670 * is, those bits which indicate a real difference when they differ
michael@0 671 */
michael@0 672 virtual nsFrameState GetDebugStateBits() const MOZ_OVERRIDE;
michael@0 673 /**
michael@0 674 * Called to dump out regression data that describes the layout
michael@0 675 * of the frame and its children, and so on. The format of the
michael@0 676 * data is dictated to be XML (using a specific DTD); the
michael@0 677 * specific kind of data dumped is up to the frame itself, with
michael@0 678 * the caveat that some base types are defined.
michael@0 679 * For more information, see XXX.
michael@0 680 */
michael@0 681 virtual nsresult DumpRegressionData(nsPresContext* aPresContext,
michael@0 682 FILE* out, int32_t aIndent) MOZ_OVERRIDE;
michael@0 683
michael@0 684 /**
michael@0 685 * See if style tree verification is enabled. To enable style tree
michael@0 686 * verification add "styleverifytree:1" to your NSPR_LOG_MODULES
michael@0 687 * environment variable (any non-zero debug level will work). Or,
michael@0 688 * call SetVerifyStyleTreeEnable with true.
michael@0 689 */
michael@0 690 static bool GetVerifyStyleTreeEnable();
michael@0 691
michael@0 692 /**
michael@0 693 * Set the verify-style-tree enable flag.
michael@0 694 */
michael@0 695 static void SetVerifyStyleTreeEnable(bool aEnabled);
michael@0 696
michael@0 697 /**
michael@0 698 * The frame class and related classes share an nspr log module
michael@0 699 * for logging frame activity.
michael@0 700 *
michael@0 701 * Note: the log module is created during library initialization which
michael@0 702 * means that you cannot perform logging before then.
michael@0 703 */
michael@0 704 static PRLogModuleInfo* GetLogModuleInfo();
michael@0 705
michael@0 706 // Show frame borders when rendering
michael@0 707 static void ShowFrameBorders(bool aEnable);
michael@0 708 static bool GetShowFrameBorders();
michael@0 709
michael@0 710 // Show frame border of event target
michael@0 711 static void ShowEventTargetFrameBorder(bool aEnable);
michael@0 712 static bool GetShowEventTargetFrameBorder();
michael@0 713
michael@0 714 #endif
michael@0 715 #ifdef MOZ_DUMP_PAINTING
michael@0 716 public:
michael@0 717
michael@0 718 static void PrintDisplayItem(nsDisplayListBuilder* aBuilder,
michael@0 719 nsDisplayItem* aItem,
michael@0 720 FILE* aFile = stdout,
michael@0 721 bool aDumpSublist = false,
michael@0 722 bool aDumpHtml = false);
michael@0 723
michael@0 724 static void PrintDisplayList(nsDisplayListBuilder* aBuilder,
michael@0 725 const nsDisplayList& aList,
michael@0 726 FILE* aFile = stdout,
michael@0 727 bool aDumpHtml = false);
michael@0 728 static void PrintDisplayListSet(nsDisplayListBuilder* aBuilder,
michael@0 729 const nsDisplayListSet& aList,
michael@0 730 FILE* aFile = stdout,
michael@0 731 bool aDumpHtml = false);
michael@0 732
michael@0 733 #endif
michael@0 734 };
michael@0 735
michael@0 736 // Start Display Reflow Debugging
michael@0 737 #ifdef DEBUG
michael@0 738
michael@0 739 struct DR_cookie {
michael@0 740 DR_cookie(nsPresContext* aPresContext,
michael@0 741 nsIFrame* aFrame,
michael@0 742 const nsHTMLReflowState& aReflowState,
michael@0 743 nsHTMLReflowMetrics& aMetrics,
michael@0 744 nsReflowStatus& aStatus);
michael@0 745 ~DR_cookie();
michael@0 746 void Change() const;
michael@0 747
michael@0 748 nsPresContext* mPresContext;
michael@0 749 nsIFrame* mFrame;
michael@0 750 const nsHTMLReflowState& mReflowState;
michael@0 751 nsHTMLReflowMetrics& mMetrics;
michael@0 752 nsReflowStatus& mStatus;
michael@0 753 void* mValue;
michael@0 754 };
michael@0 755
michael@0 756 struct DR_layout_cookie {
michael@0 757 DR_layout_cookie(nsIFrame* aFrame);
michael@0 758 ~DR_layout_cookie();
michael@0 759
michael@0 760 nsIFrame* mFrame;
michael@0 761 void* mValue;
michael@0 762 };
michael@0 763
michael@0 764 struct DR_intrinsic_width_cookie {
michael@0 765 DR_intrinsic_width_cookie(nsIFrame* aFrame, const char* aType,
michael@0 766 nscoord& aResult);
michael@0 767 ~DR_intrinsic_width_cookie();
michael@0 768
michael@0 769 nsIFrame* mFrame;
michael@0 770 const char* mType;
michael@0 771 nscoord& mResult;
michael@0 772 void* mValue;
michael@0 773 };
michael@0 774
michael@0 775 struct DR_intrinsic_size_cookie {
michael@0 776 DR_intrinsic_size_cookie(nsIFrame* aFrame, const char* aType,
michael@0 777 nsSize& aResult);
michael@0 778 ~DR_intrinsic_size_cookie();
michael@0 779
michael@0 780 nsIFrame* mFrame;
michael@0 781 const char* mType;
michael@0 782 nsSize& mResult;
michael@0 783 void* mValue;
michael@0 784 };
michael@0 785
michael@0 786 struct DR_init_constraints_cookie {
michael@0 787 DR_init_constraints_cookie(nsIFrame* aFrame, nsHTMLReflowState* aState,
michael@0 788 nscoord aCBWidth, nscoord aCBHeight,
michael@0 789 const nsMargin* aBorder,
michael@0 790 const nsMargin* aPadding);
michael@0 791 ~DR_init_constraints_cookie();
michael@0 792
michael@0 793 nsIFrame* mFrame;
michael@0 794 nsHTMLReflowState* mState;
michael@0 795 void* mValue;
michael@0 796 };
michael@0 797
michael@0 798 struct DR_init_offsets_cookie {
michael@0 799 DR_init_offsets_cookie(nsIFrame* aFrame, nsCSSOffsetState* aState,
michael@0 800 nscoord aHorizontalPercentBasis,
michael@0 801 nscoord aVerticalPercentBasis,
michael@0 802 const nsMargin* aBorder,
michael@0 803 const nsMargin* aPadding);
michael@0 804 ~DR_init_offsets_cookie();
michael@0 805
michael@0 806 nsIFrame* mFrame;
michael@0 807 nsCSSOffsetState* mState;
michael@0 808 void* mValue;
michael@0 809 };
michael@0 810
michael@0 811 struct DR_init_type_cookie {
michael@0 812 DR_init_type_cookie(nsIFrame* aFrame, nsHTMLReflowState* aState);
michael@0 813 ~DR_init_type_cookie();
michael@0 814
michael@0 815 nsIFrame* mFrame;
michael@0 816 nsHTMLReflowState* mState;
michael@0 817 void* mValue;
michael@0 818 };
michael@0 819
michael@0 820 #define DISPLAY_REFLOW(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status) \
michael@0 821 DR_cookie dr_cookie(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status);
michael@0 822 #define DISPLAY_REFLOW_CHANGE() \
michael@0 823 dr_cookie.Change();
michael@0 824 #define DISPLAY_LAYOUT(dr_frame) \
michael@0 825 DR_layout_cookie dr_cookie(dr_frame);
michael@0 826 #define DISPLAY_MIN_WIDTH(dr_frame, dr_result) \
michael@0 827 DR_intrinsic_width_cookie dr_cookie(dr_frame, "Min", dr_result)
michael@0 828 #define DISPLAY_PREF_WIDTH(dr_frame, dr_result) \
michael@0 829 DR_intrinsic_width_cookie dr_cookie(dr_frame, "Pref", dr_result)
michael@0 830 #define DISPLAY_PREF_SIZE(dr_frame, dr_result) \
michael@0 831 DR_intrinsic_size_cookie dr_cookie(dr_frame, "Pref", dr_result)
michael@0 832 #define DISPLAY_MIN_SIZE(dr_frame, dr_result) \
michael@0 833 DR_intrinsic_size_cookie dr_cookie(dr_frame, "Min", dr_result)
michael@0 834 #define DISPLAY_MAX_SIZE(dr_frame, dr_result) \
michael@0 835 DR_intrinsic_size_cookie dr_cookie(dr_frame, "Max", dr_result)
michael@0 836 #define DISPLAY_INIT_CONSTRAINTS(dr_frame, dr_state, dr_cbw, dr_cbh, \
michael@0 837 dr_bdr, dr_pad) \
michael@0 838 DR_init_constraints_cookie dr_cookie(dr_frame, dr_state, dr_cbw, dr_cbh, \
michael@0 839 dr_bdr, dr_pad)
michael@0 840 #define DISPLAY_INIT_OFFSETS(dr_frame, dr_state, dr_hpb, dr_vpb, dr_bdr, dr_pad) \
michael@0 841 DR_init_offsets_cookie dr_cookie(dr_frame, dr_state, dr_hpb, dr_vpb, dr_bdr, dr_pad)
michael@0 842 #define DISPLAY_INIT_TYPE(dr_frame, dr_result) \
michael@0 843 DR_init_type_cookie dr_cookie(dr_frame, dr_result)
michael@0 844
michael@0 845 #else
michael@0 846
michael@0 847 #define DISPLAY_REFLOW(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status)
michael@0 848 #define DISPLAY_REFLOW_CHANGE()
michael@0 849 #define DISPLAY_LAYOUT(dr_frame) PR_BEGIN_MACRO PR_END_MACRO
michael@0 850 #define DISPLAY_MIN_WIDTH(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
michael@0 851 #define DISPLAY_PREF_WIDTH(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
michael@0 852 #define DISPLAY_PREF_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
michael@0 853 #define DISPLAY_MIN_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
michael@0 854 #define DISPLAY_MAX_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
michael@0 855 #define DISPLAY_INIT_CONSTRAINTS(dr_frame, dr_state, dr_cbw, dr_cbh, \
michael@0 856 dr_bdr, dr_pad) \
michael@0 857 PR_BEGIN_MACRO PR_END_MACRO
michael@0 858 #define DISPLAY_INIT_OFFSETS(dr_frame, dr_state, dr_hpb, dr_vpb, dr_bdr, dr_pad) \
michael@0 859 PR_BEGIN_MACRO PR_END_MACRO
michael@0 860 #define DISPLAY_INIT_TYPE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
michael@0 861
michael@0 862 #endif
michael@0 863 // End Display Reflow Debugging
michael@0 864
michael@0 865 // similar to NS_ENSURE_TRUE but with no return value
michael@0 866 #define ENSURE_TRUE(x) \
michael@0 867 PR_BEGIN_MACRO \
michael@0 868 if (!(x)) { \
michael@0 869 NS_WARNING("ENSURE_TRUE(" #x ") failed"); \
michael@0 870 return; \
michael@0 871 } \
michael@0 872 PR_END_MACRO
michael@0 873 #endif /* nsFrame_h___ */

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