/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public License * Version 1.0 (the "NPL"); you may not use this file except in * compliance with the NPL. You may obtain a copy of the NPL at * http://www.mozilla.org/NPL/ * * Software distributed under the NPL is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL * for the specific language governing rights and limitations under the * NPL. * * The Initial Developer of this code under the NPL is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All Rights * Reserved. */ #include "nsTableRowGroupFrame.h" #include "nsTableRowFrame.h" #include "nsTableCellFrame.h" #include "nsIRenderingContext.h" #include "nsIPresContext.h" #include "nsIStyleContext.h" #include "nsStyleConsts.h" #include "nsIContent.h" #include "nsIContentDelegate.h" #include "nsIView.h" #include "nsIPtr.h" #ifdef NS_DEBUG static PRBool gsDebug1 = PR_FALSE; static PRBool gsDebug2 = PR_FALSE; //#define NOISY //#define NOISY_FLOW #else static const PRBool gsDebug1 = PR_FALSE; static const PRBool gsDebug2 = PR_FALSE; #endif NS_DEF_PTR(nsIStyleContext); NS_DEF_PTR(nsIContent); /* ----------- RowGroupReflowState ---------- */ struct RowGroupReflowState { // The body's available size (computed from the body's parent) nsSize availSize; // Margin tracking information nscoord prevMaxPosBottomMargin; nscoord prevMaxNegBottomMargin; // Flags for whether the max size is unconstrained PRBool unconstrainedWidth; PRBool unconstrainedHeight; // Running y-offset nscoord y; // Flag used to set aMaxElementSize to my first row PRBool firstRow; // Remember the height of the first row, because it's our maxElementHeight (plus header/footers) nscoord firstRowHeight; RowGroupReflowState(nsIPresContext* aPresContext, const nsSize& aMaxSize) { availSize.width = aMaxSize.width; availSize.height = aMaxSize.height; prevMaxPosBottomMargin = 0; prevMaxNegBottomMargin = 0; y=0; // border/padding/margin??? unconstrainedWidth = PRBool(aMaxSize.width == NS_UNCONSTRAINEDSIZE); unconstrainedHeight = PRBool(aMaxSize.height == NS_UNCONSTRAINEDSIZE); firstRow = PR_TRUE; firstRowHeight=0; } ~RowGroupReflowState() { } }; /* ----------- nsTableRowGroupFrame ---------- */ nsTableRowGroupFrame::nsTableRowGroupFrame(nsIContent* aContent, nsIFrame* aParentFrame) : nsContainerFrame(aContent, aParentFrame) { mType = aContent->GetTag(); // mType: REFCNT++ } nsTableRowGroupFrame::~nsTableRowGroupFrame() { if (nsnull!=mType) NS_RELEASE(mType); // mType: REFCNT-- } NS_METHOD nsTableRowGroupFrame::GetRowGroupType(nsIAtom *& aType) { NS_ADDREF(mType); aType=mType; return NS_OK; } NS_METHOD nsTableRowGroupFrame::Paint(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect) { // for debug... /* if (nsIFrame::GetShowFrameBorders()) { aRenderingContext.SetColor(NS_RGB(128,0,0)); aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height); } */ PaintChildren(aPresContext, aRenderingContext, aDirtyRect); return NS_OK; } // aDirtyRect is in our coordinate system // child rect's are also in our coordinate system /** overloaded method from nsContainerFrame. The difference is that * we don't want to clip our children, so a cell can do a rowspan */ void nsTableRowGroupFrame::PaintChildren(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect) { nsIFrame* kid = mFirstChild; while (nsnull != kid) { nsIView *pView; kid->GetView(pView); if (nsnull == pView) { nsRect kidRect; kid->GetRect(kidRect); nsRect damageArea(aDirtyRect); // Translate damage area into kid's coordinate system nsRect kidDamageArea(damageArea.x - kidRect.x, damageArea.y - kidRect.y, damageArea.width, damageArea.height); aRenderingContext.PushState(); aRenderingContext.Translate(kidRect.x, kidRect.y); kid->Paint(aPresContext, aRenderingContext, kidDamageArea); if (nsIFrame::GetShowFrameBorders()) { aRenderingContext.SetColor(NS_RGB(255,0,0)); aRenderingContext.DrawRect(0, 0, kidRect.width, kidRect.height); } aRenderingContext.PopState(); } else NS_RELEASE(pView); kid->GetNextSibling(kid); } } // Collapse child's top margin with previous bottom margin nscoord nsTableRowGroupFrame::GetTopMarginFor(nsIPresContext* aCX, RowGroupReflowState& aState, const nsMargin& aKidMargin) { nscoord margin; nscoord maxNegTopMargin = 0; nscoord maxPosTopMargin = 0; if ((margin = aKidMargin.top) < 0) { maxNegTopMargin = -margin; } else { maxPosTopMargin = margin; } nscoord maxPos = PR_MAX(aState.prevMaxPosBottomMargin, maxPosTopMargin); nscoord maxNeg = PR_MAX(aState.prevMaxNegBottomMargin, maxNegTopMargin); margin = maxPos - maxNeg; return margin; } // Position and size aKidFrame and update our reflow state. The origin of // aKidRect is relative to the upper-left origin of our frame, and includes // any left/top margin. void nsTableRowGroupFrame::PlaceChild( nsIPresContext* aPresContext, RowGroupReflowState& aState, nsIFrame* aKidFrame, const nsRect& aKidRect, nsSize* aMaxElementSize, nsSize& aKidMaxElementSize) { if (PR_TRUE==gsDebug1) printf ("rowgroup: placing row at %d, %d, %d, %d\n", aKidRect.x, aKidRect.y, aKidRect.width, aKidRect.height); // Place and size the child aKidFrame->SetRect(aKidRect); // Adjust the running y-offset aState.y += aKidRect.height; // If our height is constrained then update the available height if (PR_FALSE == aState.unconstrainedHeight) { aState.availSize.height -= aKidRect.height; } // Update the maximum element size if (PR_TRUE==aState.firstRow) { aState.firstRow = PR_FALSE; aState.firstRowHeight = aKidRect.height; if (nsnull != aMaxElementSize) { aMaxElementSize->width = aKidMaxElementSize.width; aMaxElementSize->height = aKidMaxElementSize.height; } } } /** * Reflow the frames we've already created * * @param aPresContext presentation context to use * @param aState current inline state * @return true if we successfully reflowed all the mapped children and false * otherwise, e.g. we pushed children to the next in flow */ PRBool nsTableRowGroupFrame::ReflowMappedChildren( nsIPresContext* aPresContext, RowGroupReflowState& aState, nsSize* aMaxElementSize) { #ifdef NS_DEBUG VerifyLastIsComplete(); #endif #ifdef NOISY ListTag(stdout); printf(": reflow mapped (childCount=%d) [%d,%d,%c]\n", mChildCount, mFirstContentOffset, mLastContentOffset, (mLastContentIsComplete ? 'T' : 'F')); #ifdef NOISY_FLOW { nsTableRowGroupFrame* flow = (nsTableRowGroupFrame*) mNextInFlow; while (flow != 0) { printf(" %p: [%d,%d,%c]\n", flow, flow->mFirstContentOffset, flow->mLastContentOffset, (flow->mLastContentIsComplete ? 'T' : 'F')); flow = (nsTableRowGroupFrame*) flow->mNextInFlow; } } #endif #endif NS_PRECONDITION(nsnull != mFirstChild, "no children"); PRInt32 childCount = 0; nsIFrame* prevKidFrame = nsnull; // Remember our original mLastContentIsComplete so that if we end up // having to push children, we have the correct value to hand to // PushChildren. PRBool lastContentIsComplete = mLastContentIsComplete; nsSize kidMaxElementSize; nsSize* pKidMaxElementSize = (nsnull != aMaxElementSize) ? &kidMaxElementSize : nsnull; PRBool result = PR_TRUE; for (nsIFrame* kidFrame = mFirstChild; nsnull != kidFrame; ) { nsSize kidAvailSize(aState.availSize); if (0>=kidAvailSize.height) kidAvailSize.height = 1; // XXX: HaCk - we don't handle negative heights yet nsReflowMetrics desiredSize; nsReflowStatus status; // Get top margin for this kid nsIContentPtr kid; kidFrame->GetContent(kid.AssignRef()); nsIStyleContextPtr kidSC; kidFrame->GetStyleContext(aPresContext, kidSC.AssignRef()); nsStyleSpacing* kidSpacing = (nsStyleSpacing*) kidSC->GetData(eStyleStruct_Spacing); nsMargin kidMargin; kidSpacing->CalcMarginFor(this, kidMargin); nscoord topMargin = GetTopMarginFor(aPresContext, aState, kidMargin); nscoord bottomMargin = kidMargin.bottom; // Figure out the amount of available size for the child (subtract // off the top margin we are going to apply to it) if (PR_FALSE == aState.unconstrainedHeight) { kidAvailSize.height -= topMargin; } // Subtract off for left and right margin if (PR_FALSE == aState.unconstrainedWidth) { kidAvailSize.width -= kidMargin.left + kidMargin.right; } // Reflow the child into the available space status = ReflowChild(kidFrame, aPresContext, desiredSize, kidAvailSize, pKidMaxElementSize); // Did the child fit? if ((kidFrame != mFirstChild) && ((kidAvailSize.height <= 0) || (desiredSize.height > kidAvailSize.height))) { // The child's height is too big to fit at all in our remaining space, // and it's not our first child. // // Note that if the width is too big that's okay and we allow the // child to extend horizontally outside of the reflow area // Since we are giving the next-in-flow our last child, we // give it our original mLastContentIsComplete, too (in case we // are pushing into an empty next-in-flow) PushChildren(kidFrame, prevKidFrame, lastContentIsComplete); SetLastContentOffset(prevKidFrame); // Our mLastContentIsComplete was already set by the last kid we // reflowed reflow's status result = PR_FALSE; break; } // Place the child after taking into account it's margin aState.y += topMargin; nsRect kidRect (0, 0, desiredSize.width, desiredSize.height); kidRect.x += kidMargin.left; kidRect.y += aState.y; PlaceChild(aPresContext, aState, kidFrame, kidRect, aMaxElementSize, kidMaxElementSize); if (bottomMargin < 0) { aState.prevMaxNegBottomMargin = -bottomMargin; } else { aState.prevMaxPosBottomMargin = bottomMargin; } childCount++; // Remember where we just were in case we end up pushing children prevKidFrame = kidFrame; // Update mLastContentIsComplete now that this kid fits mLastContentIsComplete = NS_FRAME_IS_COMPLETE(status); /* Row groups should not create continuing frames for rows * unless they absolutely have to! * check to see if this is absolutely necessary (with new params from troy) * otherwise PushChildren and bail. */ // Special handling for incomplete children if (NS_FRAME_IS_NOT_COMPLETE(status)) { // XXX It's good to assume that we might still have room // even if the child didn't complete (floaters will want this) nsIFrame* kidNextInFlow; kidFrame->GetNextInFlow(kidNextInFlow); PRBool lastContentIsComplete = mLastContentIsComplete; if (nsnull == kidNextInFlow) { // No the child isn't complete, and it doesn't have a next in flow so // create a continuing frame. This hooks the child into the flow. nsIFrame* continuingFrame; nsIStyleContext* kidSC; kidFrame->GetStyleContext(aPresContext, kidSC); kidFrame->CreateContinuingFrame(aPresContext, this, kidSC, continuingFrame); NS_RELEASE(kidSC); // Insert the frame. We'll reflow it next pass through the loop nsIFrame* nextSib; kidFrame->GetNextSibling(nextSib); continuingFrame->SetNextSibling(nextSib); kidFrame->SetNextSibling(continuingFrame); if (nsnull == nextSib) { // Assume that the continuation frame we just created is // complete, for now. It will get reflowed by our // next-in-flow (we are going to push it now) lastContentIsComplete = PR_TRUE; } } // We've used up all of our available space so push the remaining // children to the next-in-flow nsIFrame* nextSibling; kidFrame->GetNextSibling(nextSibling); if (nsnull != nextSibling) { PushChildren(nextSibling, kidFrame, lastContentIsComplete); SetLastContentOffset(prevKidFrame); } result = PR_FALSE; break; } // Add back in the left and right margins, because one row does not // impact another row's width if (PR_FALSE == aState.unconstrainedWidth) { kidAvailSize.width += kidMargin.left + kidMargin.right; } // Get the next child kidFrame->GetNextSibling(kidFrame); } // Update the child count mChildCount = childCount; #ifdef NS_DEBUG NS_POSTCONDITION(LengthOf(mFirstChild) == mChildCount, "bad child count"); nsIFrame* lastChild; PRInt32 lastIndexInParent; LastChild(lastChild); lastChild->GetContentIndex(lastIndexInParent); NS_POSTCONDITION(lastIndexInParent == mLastContentOffset, "bad last content offset"); #endif #ifdef NS_DEBUG VerifyLastIsComplete(); #endif #ifdef NOISY ListTag(stdout); printf(": reflow mapped %sok (childCount=%d) [%d,%d,%c]\n", (result ? "" : "NOT "), mChildCount, mFirstContentOffset, mLastContentOffset, (mLastContentIsComplete ? 'T' : 'F')); #ifdef NOISY_FLOW { nsTableRowGroupFrame* flow = (nsTableRowGroupFrame*) mNextInFlow; while (flow != 0) { printf(" %p: [%d,%d,%c]\n", flow, flow->mFirstContentOffset, flow->mLastContentOffset, (flow->mLastContentIsComplete ? 'T' : 'F')); flow = (nsTableRowGroupFrame*) flow->mNextInFlow; } } #endif #endif return result; } /** * Try and pull-up frames from our next-in-flow * * @param aPresContext presentation context to use * @param aState current inline state * @return true if we successfully pulled-up all the children and false * otherwise, e.g. child didn't fit */ PRBool nsTableRowGroupFrame::PullUpChildren(nsIPresContext* aPresContext, RowGroupReflowState& aState, nsSize* aMaxElementSize) { #ifdef NS_DEBUG VerifyLastIsComplete(); #endif #ifdef NOISY ListTag(stdout); printf(": pullup (childCount=%d) [%d,%d,%c]\n", mChildCount, mFirstContentOffset, mLastContentOffset, (mLastContentIsComplete ? 'T' : 'F')); #ifdef NOISY_FLOW { nsTableRowGroupFrame* flow = (nsTableRowGroupFrame*) mNextInFlow; while (flow != 0) { printf(" %p: [%d,%d,%c]\n", flow, flow->mFirstContentOffset, flow->mLastContentOffset, (flow->mLastContentIsComplete ? 'T' : 'F')); flow = (nsTableRowGroupFrame*) flow->mNextInFlow; } } #endif #endif nsTableRowGroupFrame* nextInFlow = (nsTableRowGroupFrame*)mNextInFlow; nsSize kidMaxElementSize; nsSize* pKidMaxElementSize = (nsnull != aMaxElementSize) ? &kidMaxElementSize : nsnull; #ifdef NS_DEBUG PRInt32 kidIndex = NextChildOffset(); #endif nsIFrame* prevKidFrame; LastChild(prevKidFrame); // This will hold the prevKidFrame's mLastContentIsComplete // status. If we have to push the frame that follows prevKidFrame // then this will become our mLastContentIsComplete state. Since // prevKidFrame is initially our last frame, it's completion status // is our mLastContentIsComplete value. PRBool prevLastContentIsComplete = mLastContentIsComplete; PRBool result = PR_TRUE; while (nsnull != nextInFlow) { nsReflowMetrics kidSize; nsReflowStatus status; // Get the next child nsIFrame* kidFrame = nextInFlow->mFirstChild; // Any more child frames? if (nsnull == kidFrame) { // No. Any frames on its overflow list? if (nsnull != nextInFlow->mOverflowList) { // Move the overflow list to become the child list // NS_ABORT(); nextInFlow->AppendChildren(nextInFlow->mOverflowList); nextInFlow->mOverflowList = nsnull; kidFrame = nextInFlow->mFirstChild; } else { // We've pulled up all the children, so move to the next-in-flow. nextInFlow->GetNextInFlow((nsIFrame*&)nextInFlow); continue; } } // See if the child fits in the available space. If it fits or // it's splittable then reflow it. The reason we can't just move // it is that we still need ascent/descent information nsSize kidFrameSize; nsSplittableType kidIsSplittable; kidFrame->GetSize(kidFrameSize); kidFrame->IsSplittable(kidIsSplittable); if ((kidFrameSize.height > aState.availSize.height) && NS_FRAME_IS_NOT_SPLITTABLE(kidIsSplittable)) { result = PR_FALSE; mLastContentIsComplete = prevLastContentIsComplete; break; } status = ReflowChild(kidFrame, aPresContext, kidSize, aState.availSize, pKidMaxElementSize); // Did the child fit? if ((kidSize.height > aState.availSize.height) && (nsnull != mFirstChild)) { // The child is too wide to fit in the available space, and it's // not our first child result = PR_FALSE; mLastContentIsComplete = prevLastContentIsComplete; break; } // Place the child //aState.y += topMargin; nsRect kidRect (0, 0, kidSize.width, kidSize.height); //kidRect.x += kidMol->margin.left; kidRect.y += aState.y; PlaceChild(aPresContext, aState, kidFrame, kidRect, aMaxElementSize, *pKidMaxElementSize); // Remove the frame from its current parent kidFrame->GetNextSibling(nextInFlow->mFirstChild); nextInFlow->mChildCount--; // Update the next-in-flows first content offset if (nsnull != nextInFlow->mFirstChild) { nextInFlow->SetFirstContentOffset(nextInFlow->mFirstChild); } // Link the frame into our list of children kidFrame->SetGeometricParent(this); nsIFrame* kidContentParent; kidFrame->GetContentParent(kidContentParent); if (nextInFlow == kidContentParent) { kidFrame->SetContentParent(this); } if (nsnull == prevKidFrame) { mFirstChild = kidFrame; SetFirstContentOffset(kidFrame); } else { prevKidFrame->SetNextSibling(kidFrame); } kidFrame->SetNextSibling(nsnull); mChildCount++; // Remember where we just were in case we end up pushing children prevKidFrame = kidFrame; prevLastContentIsComplete = mLastContentIsComplete; // Is the child we just pulled up complete? mLastContentIsComplete = NS_FRAME_IS_COMPLETE(status); if (NS_FRAME_IS_NOT_COMPLETE(status)) { // No the child isn't complete nsIFrame* kidNextInFlow; kidFrame->GetNextInFlow(kidNextInFlow); if (nsnull == kidNextInFlow) { // The child doesn't have a next-in-flow so create a // continuing frame. The creation appends it to the flow and // prepares it for reflow. nsIFrame* continuingFrame; nsIStyleContext* kidSC; kidFrame->GetStyleContext(aPresContext, kidSC); kidFrame->CreateContinuingFrame(aPresContext, this, kidSC, continuingFrame); NS_RELEASE(kidSC); NS_ASSERTION(nsnull != continuingFrame, "frame creation failed"); // Add the continuing frame to our sibling list and then push // it to the next-in-flow. This ensures the next-in-flow's // content offsets and child count are set properly. Note that // we can safely assume that the continuation is complete so // we pass PR_TRUE into PushChidren in case our next-in-flow // was just drained and now needs to know it's // mLastContentIsComplete state. kidFrame->SetNextSibling(continuingFrame); PushChildren(continuingFrame, kidFrame, PR_TRUE); // After we push the continuation frame we don't need to fuss // with mLastContentIsComplete beause the continuation frame // is no longer on *our* list. } // If the child isn't complete then it means that we've used up // all of our available space. result = PR_FALSE; break; } } // Update our last content offset if (nsnull != prevKidFrame) { NS_ASSERTION(IsLastChild(prevKidFrame), "bad last child"); SetLastContentOffset(prevKidFrame); } // We need to make sure the first content offset is correct for any empty // next-in-flow frames (frames where we pulled up all the child frames) nextInFlow = (nsTableRowGroupFrame*)mNextInFlow; if ((nsnull != nextInFlow) && (nsnull == nextInFlow->mFirstChild)) { // We have at least one empty frame. Did we succesfully pull up all the // child frames? if (PR_FALSE == result) { // No, so we need to adjust the first content offset of all the empty // frames AdjustOffsetOfEmptyNextInFlows(); #ifdef NS_DEBUG } else { // Yes, we successfully pulled up all the child frames which means all // the next-in-flows must be empty. Do a sanity check while (nsnull != nextInFlow) { NS_ASSERTION(nsnull == nextInFlow->mFirstChild, "non-empty next-in-flow"); nextInFlow->GetNextInFlow((nsIFrame*&)nextInFlow); } #endif } } #ifdef NS_DEBUG VerifyLastIsComplete(); #endif #ifdef NOISY ListTag(stdout); printf(": pullup %sok (childCount=%d) [%d,%d,%c]\n", (result ? "" : "NOT "), mChildCount, mFirstContentOffset, mLastContentOffset, (mLastContentIsComplete ? 'T' : 'F')); #ifdef NOISY_FLOW { nsTableRowGroupFrame* flow = (nsTableRowGroupFrame*) mNextInFlow; while (flow != 0) { printf(" %p: [%d,%d,%c]\n", flow, flow->mFirstContentOffset, flow->mLastContentOffset, (flow->mLastContentIsComplete ? 'T' : 'F')); flow = (nsTableRowGroupFrame*) flow->mNextInFlow; } } #endif #endif return result; } /** * Create new frames for content we haven't yet mapped * * @param aPresContext presentation context to use * @param aState current inline state * @return frComplete if all content has been mapped and frNotComplete * if we should be continued */ nsReflowStatus nsTableRowGroupFrame::ReflowUnmappedChildren(nsIPresContext* aPresContext, RowGroupReflowState& aState, nsSize* aMaxElementSize) { #ifdef NS_DEBUG VerifyLastIsComplete(); #endif nsIFrame* kidPrevInFlow = nsnull; nsReflowStatus result = NS_FRAME_NOT_COMPLETE; // If we have no children and we have a prev-in-flow then we need to pick // up where it left off. If we have children, e.g. we're being resized, then // our content offset should already be set correctly... if ((nsnull == mFirstChild) && (nsnull != mPrevInFlow)) { nsTableRowGroupFrame* prev = (nsTableRowGroupFrame*)mPrevInFlow; NS_ASSERTION(prev->mLastContentOffset >= prev->mFirstContentOffset, "bad prevInFlow"); mFirstContentOffset = prev->NextChildOffset(); if (!prev->mLastContentIsComplete) { // Our prev-in-flow's last child is not complete prev->LastChild(kidPrevInFlow); } } mLastContentIsComplete = PR_TRUE; // Place our children, one at a time, until we are out of children nsSize kidMaxElementSize; nsSize* pKidMaxElementSize = (nsnull != aMaxElementSize) ? &kidMaxElementSize : nsnull; PRInt32 kidIndex = NextChildOffset(); nsIFrame* prevKidFrame; LastChild(prevKidFrame); // XXX remember this... for (;;) { // Get the next content object nsIContentPtr kid = mContent->ChildAt(kidIndex); if (kid.IsNull()) { result = NS_FRAME_COMPLETE; break; } // Make sure we still have room left if (aState.availSize.height <= 0) { // Note: return status was set to frNotComplete above... break; } // Resolve style nsIStyleContextPtr kidSC = aPresContext->ResolveStyleContextFor(kid, this); nsStyleSpacing* kidSpacing = (nsStyleSpacing*) kidSC->GetData(eStyleStruct_Spacing); nsMargin kidMargin; kidSpacing->CalcMarginFor(this, kidMargin); nscoord topMargin = GetTopMarginFor(aPresContext, aState, kidMargin); nscoord bottomMargin = kidMargin.bottom; nsIFrame* kidFrame; // Create a child frame if (nsnull == kidPrevInFlow) { nsIContentDelegate* kidDel = nsnull; kidDel = kid->GetDelegate(aPresContext); nsresult rv = kidDel->CreateFrame(aPresContext, kid, this, kidSC, kidFrame); NS_RELEASE(kidDel); } else { kidPrevInFlow->CreateContinuingFrame(aPresContext, this, kidSC, kidFrame); } // Try to reflow the child into the available space. It might not // fit or might need continuing. nsReflowMetrics kidSize; nsReflowStatus status = ReflowChild(kidFrame,aPresContext, kidSize, aState.availSize, pKidMaxElementSize); // Did the child fit? if ((kidSize.height > aState.availSize.height) && (nsnull != mFirstChild)) { // The child is too wide to fit in the available space, and it's // not our first child. Add the frame to our overflow list NS_ASSERTION(nsnull == mOverflowList, "bad overflow list"); mOverflowList = kidFrame; prevKidFrame->SetNextSibling(nsnull); break; } // Place the child //aState.y += topMargin; nsRect kidRect (0, 0, kidSize.width, kidSize.height); //kidRect.x += kidMol->margin.left; kidRect.y += aState.y; PlaceChild(aPresContext, aState, kidFrame, kidRect, aMaxElementSize, *pKidMaxElementSize); // Link child frame into the list of children if (nsnull != prevKidFrame) { prevKidFrame->SetNextSibling(kidFrame); } else { mFirstChild = kidFrame; // our first child SetFirstContentOffset(kidFrame); } prevKidFrame = kidFrame; mChildCount++; kidIndex++; // Did the child complete? if (NS_FRAME_IS_NOT_COMPLETE(status)) { // If the child isn't complete then it means that we've used up // all of our available space mLastContentIsComplete = PR_FALSE; break; } kidPrevInFlow = nsnull; } // Update the content mapping NS_ASSERTION(IsLastChild(prevKidFrame), "bad last child"); SetLastContentOffset(prevKidFrame); #ifdef NS_DEBUG PRInt32 len = LengthOf(mFirstChild); NS_ASSERTION(len == mChildCount, "bad child count"); #endif #ifdef NS_DEBUG VerifyLastIsComplete(); #endif return result; } /** Layout the entire row group. * This method stacks rows vertically according to HTML 4.0 rules. * Rows are responsible for layout of their children. */ NS_METHOD nsTableRowGroupFrame::ResizeReflow( nsIPresContext* aPresContext, nsReflowMetrics& aDesiredSize, const nsSize& aMaxSize, nsSize* aMaxElementSize, nsReflowStatus& aStatus) { if (gsDebug1==PR_TRUE) printf("nsTableRowGroupFrame::ResizeReflow - aMaxSize = %d, %d\n", aMaxSize.width, aMaxSize.height); #ifdef NS_DEBUG PreReflowCheck(); #endif // Initialize out parameter if (nsnull != aMaxElementSize) { aMaxElementSize->width = 0; aMaxElementSize->height = 0; } PRBool reflowMappedOK = PR_TRUE; aStatus = NS_FRAME_COMPLETE; // Check for an overflow list MoveOverflowToChildList(); RowGroupReflowState state(aPresContext, aMaxSize); // Reflow the existing frames if (nsnull != mFirstChild) { reflowMappedOK = ReflowMappedChildren(aPresContext, state, aMaxElementSize); if (PR_FALSE == reflowMappedOK) { aStatus = NS_FRAME_NOT_COMPLETE; } } // Did we successfully reflow our mapped children? if (PR_TRUE == reflowMappedOK) { // Any space left? if (state.availSize.height <= 0) { // No space left. Don't try to pull-up children or reflow unmapped if (NextChildOffset() < mContent->ChildCount()) { aStatus = NS_FRAME_NOT_COMPLETE; } } else if (NextChildOffset() < mContent->ChildCount()) { // Try and pull-up some children from a next-in-flow if (PullUpChildren(aPresContext, state, aMaxElementSize)) { // If we still have unmapped children then create some new frames if (NextChildOffset() < mContent->ChildCount()) { aStatus = ReflowUnmappedChildren(aPresContext, state, aMaxElementSize); } } else { // We were unable to pull-up all the existing frames from the // next in flow aStatus = NS_FRAME_NOT_COMPLETE; } } } if (NS_FRAME_IS_COMPLETE(aStatus)) { // Don't forget to add in the bottom margin from our last child. // Only add it in if there's room for it. nscoord margin = state.prevMaxPosBottomMargin - state.prevMaxNegBottomMargin; if (state.availSize.height >= margin) { state.y += margin; } } // Return our desired rect //NS_ASSERTION(0width, aMaxElementSize->height); else printf("nsTableRowGroupFrame::RR returning: %s with aDesiredSize=%d,%d, aMES=NSNULL\n", NS_FRAME_IS_COMPLETE(aStatus)?"Complete":"Not Complete", aDesiredSize.width, aDesiredSize.height); } return NS_OK; } NS_METHOD nsTableRowGroupFrame::IncrementalReflow(nsIPresContext* aPresContext, nsReflowMetrics& aDesiredSize, const nsSize& aMaxSize, nsReflowCommand& aReflowCommand, nsReflowStatus& aStatus) { if (gsDebug1==PR_TRUE) printf("nsTableRowGroupFrame::IncrementalReflow\n"); // total hack for now, just some hard-coded values aDesiredSize.width = aMaxSize.width; aDesiredSize.height = aMaxSize.height; aStatus = NS_FRAME_COMPLETE; return NS_OK; } NS_METHOD nsTableRowGroupFrame::CreateContinuingFrame(nsIPresContext* aPresContext, nsIFrame* aParent, nsIStyleContext* aStyleContext, nsIFrame*& aContinuingFrame) { nsTableRowGroupFrame* cf = new nsTableRowGroupFrame(mContent, aParent); if (nsnull == cf) { return NS_ERROR_OUT_OF_MEMORY; } PrepareContinuingFrame(aPresContext, aParent, aStyleContext, cf); if (PR_TRUE==gsDebug1) printf("nsTableRowGroupFrame::CCF parent = %p, this=%p, cf=%p\n", aParent, this, cf); aContinuingFrame = cf; return NS_OK; } /* ----- static methods ----- */ nsresult nsTableRowGroupFrame::NewFrame(nsIFrame** aInstancePtrResult, nsIContent* aContent, nsIFrame* aParent) { NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr"); if (nsnull == aInstancePtrResult) { return NS_ERROR_NULL_POINTER; } nsIFrame* it = new nsTableRowGroupFrame(aContent, aParent); if (nsnull == it) { return NS_ERROR_OUT_OF_MEMORY; } *aInstancePtrResult = it; return NS_OK; } // For Debugging ONLY NS_METHOD nsTableRowGroupFrame::MoveTo(nscoord aX, nscoord aY) { if ((aX != mRect.x) || (aY != mRect.y)) { mRect.x = aX; mRect.y = aY; nsIView* view; GetView(view); // Let the view know if (nsnull != view) { // Position view relative to it's parent, not relative to our // parent frame (our parent frame may not have a view). nsIView* parentWithView; nsPoint origin; GetOffsetFromView(origin, parentWithView); view->SetPosition(origin.x, origin.y); NS_IF_RELEASE(parentWithView); } } return NS_OK; } NS_METHOD nsTableRowGroupFrame::SizeTo(nscoord aWidth, nscoord aHeight) { mRect.width = aWidth; mRect.height = aHeight; nsIView* view; GetView(view); // Let the view know if (nsnull != view) { view->SetDimensions(aWidth, aHeight); } return NS_OK; }