/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Pierre Phaneuf * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ /* base class of all rendering objects */ #ifndef nsFrame_h___ #define nsFrame_h___ #include "nsBox.h" #include "nsRect.h" #include "nsString.h" #include "prlog.h" #ifdef NS_DEBUG #include "nsIFrameDebug.h" #endif #include "nsIPresShell.h" #include "nsFrameSelection.h" #include "nsHTMLReflowState.h" #include "nsHTMLReflowMetrics.h" /** * nsFrame logging constants. We redefine the nspr * PRLogModuleInfo.level field to be a bitfield. Each bit controls a * specific type of logging. Each logging operation has associated * inline methods defined below. */ #define NS_FRAME_TRACE_CALLS 0x1 #define NS_FRAME_TRACE_PUSH_PULL 0x2 #define NS_FRAME_TRACE_CHILD_REFLOW 0x4 #define NS_FRAME_TRACE_NEW_FRAMES 0x8 #define NS_FRAME_LOG_TEST(_lm,_bit) (PRIntn((_lm)->level) & (_bit)) #ifdef NS_DEBUG #define NS_FRAME_LOG(_bit,_args) \ PR_BEGIN_MACRO \ if (NS_FRAME_LOG_TEST(nsIFrameDebug::GetLogModuleInfo(),_bit)) { \ PR_LogPrint _args; \ } \ PR_END_MACRO #else #define NS_FRAME_LOG(_bit,_args) #endif // XXX Need to rework this so that logging is free when it's off #ifdef NS_DEBUG #define NS_FRAME_TRACE_IN(_method) Trace(_method, PR_TRUE) #define NS_FRAME_TRACE_OUT(_method) Trace(_method, PR_FALSE) // XXX remove me #define NS_FRAME_TRACE_MSG(_bit,_args) \ PR_BEGIN_MACRO \ if (NS_FRAME_LOG_TEST(nsIFrameDebug::GetLogModuleInfo(),_bit)) { \ TraceMsg _args; \ } \ PR_END_MACRO #define NS_FRAME_TRACE(_bit,_args) \ PR_BEGIN_MACRO \ if (NS_FRAME_LOG_TEST(nsIFrameDebug::GetLogModuleInfo(),_bit)) { \ TraceMsg _args; \ } \ PR_END_MACRO #define NS_FRAME_TRACE_REFLOW_IN(_method) Trace(_method, PR_TRUE) #define NS_FRAME_TRACE_REFLOW_OUT(_method, _status) \ Trace(_method, PR_FALSE, _status) #else #define NS_FRAME_TRACE(_bits,_args) #define NS_FRAME_TRACE_IN(_method) #define NS_FRAME_TRACE_OUT(_method) #define NS_FRAME_TRACE_MSG(_bits,_args) #define NS_FRAME_TRACE_REFLOW_IN(_method) #define NS_FRAME_TRACE_REFLOW_OUT(_method, _status) #endif //---------------------------------------------------------------------- struct nsBoxLayoutMetrics; /** * Implementation of a simple frame that's not splittable and has no * child frames. * * Sets the NS_FRAME_SYNCHRONIZE_FRAME_AND_VIEW bit, so the default * behavior is to keep the frame and view position and size in sync. */ class nsFrame : public nsBox #ifdef NS_DEBUG , public nsIFrameDebug #endif { public: /** * Create a new "empty" frame that maps a given piece of content into a * 0,0 area. */ friend nsIFrame* NS_NewEmptyFrame(nsIPresShell* aShell, nsStyleContext* aContext); // Overloaded new operator. Initializes the memory to 0 and relies on an arena // (which comes from the presShell) to perform the allocation. void* operator new(size_t sz, nsIPresShell* aPresShell) CPP_THROW_NEW; // Overridden to prevent the global delete from being called, since the memory // came out of an arena instead of the global delete operator's heap. // XXX Would like to make this private some day, but our UNIX compilers can't // deal with it. void operator delete(void* aPtr, size_t sz); // We compute and store the HTML content's overflow area. So don't // try to compute it in the box code. virtual PRBool ComputesOwnOverflowArea() { return PR_TRUE; } private: // The normal operator new is disallowed on nsFrames. void* operator new(size_t sz) CPP_THROW_NEW { return nsnull; } public: // nsQueryFrame NS_DECL_QUERYFRAME // nsIFrame NS_IMETHOD Init(nsIContent* aContent, nsIFrame* aParent, nsIFrame* asPrevInFlow); NS_IMETHOD SetInitialChildList(nsIAtom* aListName, nsIFrame* aChildList); NS_IMETHOD AppendFrames(nsIAtom* aListName, nsIFrame* aFrameList); NS_IMETHOD InsertFrames(nsIAtom* aListName, nsIFrame* aPrevFrame, nsIFrame* aFrameList); NS_IMETHOD RemoveFrame(nsIAtom* aListName, nsIFrame* aOldFrame); virtual void Destroy(); virtual nsStyleContext* GetAdditionalStyleContext(PRInt32 aIndex) const; virtual void SetAdditionalStyleContext(PRInt32 aIndex, nsStyleContext* aStyleContext); NS_IMETHOD SetParent(const nsIFrame* aParent); virtual nscoord GetBaseline() const; virtual nsIAtom* GetAdditionalChildListName(PRInt32 aIndex) const; virtual nsIFrame* GetFirstChild(nsIAtom* aListName) const; NS_IMETHOD HandleEvent(nsPresContext* aPresContext, nsGUIEvent* aEvent, nsEventStatus* aEventStatus); NS_IMETHOD GetContentForEvent(nsPresContext* aPresContext, nsEvent* aEvent, nsIContent** aContent); NS_IMETHOD GetCursor(const nsPoint& aPoint, nsIFrame::Cursor& aCursor); NS_IMETHOD GetPointFromOffset(PRInt32 inOffset, nsPoint* outPoint); NS_IMETHOD GetChildFrameContainingOffset(PRInt32 inContentOffset, PRBool inHint, PRInt32* outFrameContentOffset, nsIFrame* *outChildFrame); static nsresult GetNextPrevLineFromeBlockFrame(nsPresContext* aPresContext, nsPeekOffsetStruct *aPos, nsIFrame *aBlockFrame, PRInt32 aLineStart, PRInt8 aOutSideLimit ); /** * Find the nearest frame with a mouse capturer. If no * parent has mouse capture this will return null. * @param aFrame Frame drag began in. * @return Nearest capturing frame. */ static nsIFrame* GetNearestCapturingFrame(nsIFrame* aFrame); NS_IMETHOD CharacterDataChanged(nsPresContext* aPresContext, nsIContent* aChild, PRBool aAppend); NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType); virtual nsSplittableType GetSplittableType() const; virtual nsIFrame* GetPrevContinuation() const; NS_IMETHOD SetPrevContinuation(nsIFrame*); virtual nsIFrame* GetNextContinuation() const; NS_IMETHOD SetNextContinuation(nsIFrame*); virtual nsIFrame* GetPrevInFlowVirtual() const; NS_IMETHOD SetPrevInFlow(nsIFrame*); virtual nsIFrame* GetNextInFlowVirtual() const; NS_IMETHOD SetNextInFlow(nsIFrame*); NS_IMETHOD GetOffsetFromView(nsPoint& aOffset, nsIView** aView) const; virtual nsIAtom* GetType() const; virtual PRBool IsContainingBlock() const; #ifdef NS_DEBUG NS_IMETHOD List(FILE* out, PRInt32 aIndent) const; NS_IMETHOD GetFrameName(nsAString& aResult) const; NS_IMETHOD_(nsFrameState) GetDebugStateBits() const; NS_IMETHOD DumpRegressionData(nsPresContext* aPresContext, FILE* out, PRInt32 aIndent); NS_IMETHOD VerifyTree() const; #endif NS_IMETHOD SetSelected(nsPresContext* aPresContext, nsIDOMRange *aRange,PRBool aSelected, nsSpread aSpread, SelectionType aType); NS_IMETHOD GetSelected(PRBool *aSelected) const; NS_IMETHOD IsSelectable(PRBool* aIsSelectable, PRUint8* aSelectStyle) const; NS_IMETHOD GetSelectionController(nsPresContext *aPresContext, nsISelectionController **aSelCon); virtual PRBool PeekOffsetNoAmount(PRBool aForward, PRInt32* aOffset); virtual PRBool PeekOffsetCharacter(PRBool aForward, PRInt32* aOffset); virtual PRBool PeekOffsetWord(PRBool aForward, PRBool aWordSelectEatSpace, PRBool aIsKeyboardSelect, PRInt32* aOffset, PeekWordState *aState); /** * Check whether we should break at a boundary between punctuation and * non-punctuation. Only call it at a punctuation boundary * (i.e. exactly one of the previous and next characters are punctuation). * @param aForward true if we're moving forward in content order * @param aPunctAfter true if the next character is punctuation * @param aWhitespaceAfter true if the next character is whitespace */ PRBool BreakWordBetweenPunctuation(const PeekWordState* aState, PRBool aForward, PRBool aPunctAfter, PRBool aWhitespaceAfter, PRBool aIsKeyboardSelect); NS_IMETHOD CheckVisibility(nsPresContext* aContext, PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aRecurse, PRBool *aFinished, PRBool *_retval); NS_IMETHOD GetOffsets(PRInt32 &aStart, PRInt32 &aEnd) const; virtual void ChildIsDirty(nsIFrame* aChild); #ifdef ACCESSIBILITY NS_IMETHOD GetAccessible(nsIAccessible** aAccessible); #endif NS_IMETHOD GetParentStyleContextFrame(nsPresContext* aPresContext, nsIFrame** aProviderFrame, PRBool* aIsChild); virtual PRBool IsEmpty(); virtual PRBool IsSelfEmpty(); virtual void MarkIntrinsicWidthsDirty(); virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext); virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext); virtual void AddInlineMinWidth(nsIRenderingContext *aRenderingContext, InlineMinWidthData *aData); virtual void AddInlinePrefWidth(nsIRenderingContext *aRenderingContext, InlinePrefWidthData *aData); virtual IntrinsicWidthOffsetData IntrinsicWidthOffsets(nsIRenderingContext* aRenderingContext); virtual IntrinsicSize GetIntrinsicSize(); virtual nsSize GetIntrinsicRatio(); virtual nsSize ComputeSize(nsIRenderingContext *aRenderingContext, nsSize aCBSize, nscoord aAvailableWidth, nsSize aMargin, nsSize aBorder, nsSize aPadding, PRBool aShrinkWrap); // Compute tight bounds assuming this frame honours its border, background // and outline, its children's tight bounds, and nothing else. nsRect ComputeSimpleTightBounds(gfxContext* aContext) const; /** * A helper, used by |nsFrame::ComputeSize| (for frames that need to * override only this part of ComputeSize), that computes the size * that should be returned when 'width', 'height', and * min/max-width/height are all 'auto' or equivalent. * * In general, frames that can accept any computed width/height should * override only ComputeAutoSize, and frames that cannot do so need to * override ComputeSize to enforce their width/height invariants. * * Implementations may optimize by returning a garbage width if * GetStylePosition()->mWidth.GetUnit() != eStyleUnit_Auto, and * likewise for height, since in such cases the result is guaranteed * to be unused. */ virtual nsSize ComputeAutoSize(nsIRenderingContext *aRenderingContext, nsSize aCBSize, nscoord aAvailableWidth, nsSize aMargin, nsSize aBorder, nsSize aPadding, PRBool aShrinkWrap); /** * Utility function for ComputeAutoSize implementations. Return * max(GetMinWidth(), min(aWidthInCB, GetPrefWidth())) */ nscoord ShrinkWidthToFit(nsIRenderingContext *aRenderingContext, nscoord aWidthInCB); NS_IMETHOD WillReflow(nsPresContext* aPresContext); NS_IMETHOD Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); NS_IMETHOD DidReflow(nsPresContext* aPresContext, const nsHTMLReflowState* aReflowState, nsDidReflowStatus aStatus); virtual PRBool CanContinueTextRun() const; // Selection Methods // XXX Doc me... (in nsIFrame.h puhleeze) // XXX If these are selection specific, then the name should imply selection // rather than generic event processing, e.g., SelectionHandlePress... NS_IMETHOD HandlePress(nsPresContext* aPresContext, nsGUIEvent * aEvent, nsEventStatus* aEventStatus); NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext, nsGUIEvent * aEvent, nsEventStatus* aEventStatus, PRBool aControlHeld); NS_IMETHOD HandleDrag(nsPresContext* aPresContext, nsGUIEvent * aEvent, nsEventStatus* aEventStatus); NS_IMETHOD HandleRelease(nsPresContext* aPresContext, nsGUIEvent * aEvent, nsEventStatus* aEventStatus); NS_IMETHOD PeekBackwardAndForward(nsSelectionAmount aAmountBack, nsSelectionAmount aAmountForward, PRInt32 aStartPos, nsPresContext* aPresContext, PRBool aJumpLines, PRBool aMultipleSelection); // Helper for GetContentAndOffsetsFromPoint; calculation of content offsets // in this function assumes there is no child frame that can be targeted. virtual ContentOffsets CalcContentOffsetsFromFramePoint(nsPoint aPoint); // Box layout methods virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState); virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState); virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState); virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState); virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState); //-------------------------------------------------- // Additional methods /** * Helper method to invalidate portions of a standard container frame if the * desired size indicates that the size has changed (specifically border, * background and outline). * We assume that the difference between the old frame area and the new * frame area is invalidated by some other means. * @param aDesiredSize the new size of the frame */ void CheckInvalidateSizeChange(nsHTMLReflowMetrics& aNewDesiredSize); // Helper function that tests if the frame tree is too deep; if it // is it marks the frame as "unflowable" and zeros out the metrics // and returns PR_TRUE. Otherwise, the frame is unmarked // "unflowable" and the metrics are not touched and PR_FALSE is // returned. PRBool IsFrameTreeTooDeep(const nsHTMLReflowState& aReflowState, nsHTMLReflowMetrics& aMetrics); // Do the work for getting the parent style context frame so that // other frame's |GetParentStyleContextFrame| methods can call this // method on *another* frame. (This function handles out-of-flow // frames by using the frame manager's placeholder map and it also // handles block-within-inline and generated content wrappers.) nsresult DoGetParentStyleContextFrame(nsPresContext* aPresContext, nsIFrame** aProviderFrame, PRBool* aIsChild); // incorporate the child overflow area into the parent overflow area // if the child does not have a overflow use the child area void ConsiderChildOverflow(nsRect& aOverflowArea, nsIFrame* aChildFrame); //Mouse Capturing code used by the frames to tell the view to capture all the following events NS_IMETHOD CaptureMouse(nsPresContext* aPresContext, PRBool aGrabMouseEvents); PRBool IsMouseCaptured(nsPresContext* aPresContext); virtual const void* GetStyleDataExternal(nsStyleStructID aSID) const; #ifdef NS_DEBUG /** * Tracing method that writes a method enter/exit routine to the * nspr log using the nsIFrame log module. The tracing is only * done when the NS_FRAME_TRACE_CALLS bit is set in the log module's * level field. */ void Trace(const char* aMethod, PRBool aEnter); void Trace(const char* aMethod, PRBool aEnter, nsReflowStatus aStatus); void TraceMsg(const char* fmt, ...); // Helper function that verifies that each frame in the list has the // NS_FRAME_IS_DIRTY bit set static void VerifyDirtyBitSet(nsIFrame* aFrameList); // Helper function to return the index in parent of the frame's content // object. Returns -1 on error or if the frame doesn't have a content object static PRInt32 ContentIndexInContainer(const nsIFrame* aFrame); static void IndentBy(FILE* out, PRInt32 aIndent) { while (--aIndent >= 0) fputs(" ", out); } void ListTag(FILE* out) const { ListTag(out, (nsIFrame*)this); } static void ListTag(FILE* out, nsIFrame* aFrame) { nsAutoString tmp; nsIFrameDebug* frameDebug = do_QueryFrame(aFrame); if (frameDebug) { frameDebug->GetFrameName(tmp); } fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out); fprintf(out, "@%p", static_cast(aFrame)); } static void XMLQuote(nsString& aString); /** * Dump out the "base classes" regression data. This should dump * out the interior data, not the "frame" XML container. And it * should call the base classes same named method before doing * anything specific in a derived class. This means that derived * classes need not override DumpRegressionData unless they need * some custom behavior that requires changing how the outer "frame" * XML container is dumped. */ virtual void DumpBaseRegressionData(nsPresContext* aPresContext, FILE* out, PRInt32 aIndent); nsresult MakeFrameName(const nsAString& aKind, nsAString& aResult) const; // Display Reflow Debugging static void* DisplayReflowEnter(nsPresContext* aPresContext, nsIFrame* aFrame, const nsHTMLReflowState& aReflowState); static void* DisplayLayoutEnter(nsIFrame* aFrame); static void* DisplayIntrinsicWidthEnter(nsIFrame* aFrame, const char* aType); static void* DisplayIntrinsicSizeEnter(nsIFrame* aFrame, const char* aType); static void DisplayReflowExit(nsPresContext* aPresContext, nsIFrame* aFrame, nsHTMLReflowMetrics& aMetrics, PRUint32 aStatus, void* aFrameTreeNode); static void DisplayLayoutExit(nsIFrame* aFrame, void* aFrameTreeNode); static void DisplayIntrinsicWidthExit(nsIFrame* aFrame, const char* aType, nscoord aResult, void* aFrameTreeNode); static void DisplayIntrinsicSizeExit(nsIFrame* aFrame, const char* aType, nsSize aResult, void* aFrameTreeNode); static void DisplayReflowStartup(); static void DisplayReflowShutdown(); #endif /** * Adds display items for standard CSS borders, background and outline for * for this frame, as necessary. Checks IsVisibleForPainting and won't * display anything if the frame is not visible. * @param aForceBackground draw the background even if the frame * background style appears to have no background --- this is useful * for frames that might receive a propagated background via * nsCSSRendering::FindBackground */ nsresult DisplayBorderBackgroundOutline(nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists, PRBool aForceBackground = PR_FALSE); /** * Add a display item for the CSS outline. Does not check visibility. */ nsresult DisplayOutlineUnconditional(nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists); /** * Add a display item for the CSS outline, after calling * IsVisibleForPainting to confirm we are visible. */ nsresult DisplayOutline(nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists); /** * Adjust the given parent frame to the right style context parent frame for * the child, given the pseudo-type of the prospective child. This handles * things like walking out of table pseudos and so forth. * * @param aProspectiveParent what GetParent() on the child returns. * Must not be null. * @param aChildPseudo the child's pseudo type, if any. */ static nsIFrame* CorrectStyleParentFrame(nsIFrame* aProspectiveParent, nsIAtom* aChildPseudo); protected: // Protected constructor and destructor nsFrame(nsStyleContext* aContext); virtual ~nsFrame(); /** * @return PR_FALSE if this frame definitely has no borders at all */ PRBool HasBorder() const; /** * To be called by |BuildDisplayLists| of this class or derived classes to add * a translucent overlay if this frame's content is selected. * @param aContentType an nsISelectionDisplay DISPLAY_ constant identifying * which kind of content this is for */ nsresult DisplaySelectionOverlay(nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists, PRUint16 aContentType = nsISelectionDisplay::DISPLAY_FRAMES); PRInt16 DisplaySelection(nsPresContext* aPresContext, PRBool isOkToTurnOn = PR_FALSE); // Style post processing hook virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext); public: //given a frame five me the first/last leaf available //XXX Robert O'Callahan wants to move these elsewhere static void GetLastLeaf(nsPresContext* aPresContext, nsIFrame **aFrame); static void GetFirstLeaf(nsPresContext* aPresContext, nsIFrame **aFrame); // Return the line number of the aFrame, and (optionally) the containing block // frame. // If aScrollLock is true, don't break outside scrollframes when looking for a // containing block frame. static PRInt32 GetLineNumber(nsIFrame *aFrame, PRBool aLockScroll, nsIFrame** aContainingBlock = nsnull); protected: // Test if we are selecting a table object: // Most table/cell selection requires that Ctrl (Cmd on Mac) key is down // during a mouse click or drag. Exception is using Shift+click when // already in "table/cell selection mode" to extend a block selection // Get the parent content node and offset of the frame // of the enclosing cell or table (if not inside a cell) // aTarget tells us what table element to select (currently only cell and table supported) // (enums for this are defined in nsIFrame.h) NS_IMETHOD GetDataForTableSelection(const nsFrameSelection *aFrameSelection, nsIPresShell *aPresShell, nsMouseEvent *aMouseEvent, nsIContent **aParentContent, PRInt32 *aContentOffset, PRInt32 *aTarget); virtual PRBool ParentDisablesSelection() const; // Fills aCursor with the appropriate information from ui static void FillCursorInformationFromStyle(const nsStyleUserInterface* ui, nsIFrame::Cursor& aCursor); NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState); #ifdef DEBUG_LAYOUT virtual void GetBoxName(nsAutoString& aName); #endif virtual PRBool GetWasCollapsed(nsBoxLayoutState& aState); virtual void SetWasCollapsed(nsBoxLayoutState& aState, PRBool aWas); void InitBoxMetrics(PRBool aClear); nsBoxLayoutMetrics* BoxMetrics() const; // Fire DOM event. If no aContent argument use frame's mContent. void FireDOMEvent(const nsAString& aDOMEventName, nsIContent *aContent = nsnull); private: nsresult BoxReflow(nsBoxLayoutState& aState, nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, nsIRenderingContext* aRenderingContext, nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight, PRBool aMoveFrame = PR_TRUE); NS_IMETHODIMP RefreshSizeCache(nsBoxLayoutState& aState); virtual nsILineIterator* GetLineIterator(); }; // Start Display Reflow Debugging #ifdef DEBUG struct DR_cookie { DR_cookie(nsPresContext* aPresContext, nsIFrame* aFrame, const nsHTMLReflowState& aReflowState, nsHTMLReflowMetrics& aMetrics, nsReflowStatus& aStatus); ~DR_cookie(); void Change() const; nsPresContext* mPresContext; nsIFrame* mFrame; const nsHTMLReflowState& mReflowState; nsHTMLReflowMetrics& mMetrics; nsReflowStatus& mStatus; void* mValue; }; struct DR_layout_cookie { DR_layout_cookie(nsIFrame* aFrame); ~DR_layout_cookie(); nsIFrame* mFrame; void* mValue; }; struct DR_intrinsic_width_cookie { DR_intrinsic_width_cookie(nsIFrame* aFrame, const char* aType, nscoord& aResult); ~DR_intrinsic_width_cookie(); nsIFrame* mFrame; const char* mType; nscoord& mResult; void* mValue; }; struct DR_intrinsic_size_cookie { DR_intrinsic_size_cookie(nsIFrame* aFrame, const char* aType, nsSize& aResult); ~DR_intrinsic_size_cookie(); nsIFrame* mFrame; const char* mType; nsSize& mResult; void* mValue; }; #define DISPLAY_REFLOW(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status) \ DR_cookie dr_cookie(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status); #define DISPLAY_REFLOW_CHANGE() \ dr_cookie.Change(); #define DISPLAY_LAYOUT(dr_frame) \ DR_layout_cookie dr_cookie(dr_frame); #define DISPLAY_MIN_WIDTH(dr_frame, dr_result) \ DR_intrinsic_width_cookie dr_cookie(dr_frame, "Min", dr_result) #define DISPLAY_PREF_WIDTH(dr_frame, dr_result) \ DR_intrinsic_width_cookie dr_cookie(dr_frame, "Pref", dr_result) #define DISPLAY_PREF_SIZE(dr_frame, dr_result) \ DR_intrinsic_size_cookie dr_cookie(dr_frame, "Pref", dr_result) #define DISPLAY_MIN_SIZE(dr_frame, dr_result) \ DR_intrinsic_size_cookie dr_cookie(dr_frame, "Min", dr_result) #define DISPLAY_MAX_SIZE(dr_frame, dr_result) \ DR_intrinsic_size_cookie dr_cookie(dr_frame, "Max", dr_result) #else #define DISPLAY_REFLOW(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status) #define DISPLAY_REFLOW_CHANGE() #define DISPLAY_LAYOUT(dr_frame) PR_BEGIN_MACRO PR_END_MACRO #define DISPLAY_MIN_WIDTH(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO #define DISPLAY_PREF_WIDTH(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO #define DISPLAY_PREF_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO #define DISPLAY_MIN_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO #define DISPLAY_MAX_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO #endif // End Display Reflow Debugging // similar to NS_ENSURE_TRUE but with no return value #define ENSURE_TRUE(x) \ PR_BEGIN_MACRO \ if (!(x)) { \ NS_WARNING("ENSURE_TRUE(" #x ") failed"); \ return; \ } \ PR_END_MACRO #endif /* nsFrame_h___ */