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bug 125543 - Prevent row groups from splitting in the reflow preceeding a special height reflow. Cells are only notified that they should observe a percent height element if the element is inside the table's cell. Percent height elements inside the body will have a height based on the page height when printing. sr=kin, r=alexsavulov.

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This commit is contained in:
karnaze@netscape.com
2002-04-10 21:32:41 +00:00
parent 6b41e30fe0
commit 335ac62023
18 changed files with 250 additions and 120 deletions
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33
layout/generic/nsHTMLReflowState.cpp
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@@ -50,6 +50,7 @@
#include "nsImageFrame.h"
#include "nsIPref.h"
#include "nsIServiceManager.h"
#include "nsIPercentHeightObserver.h"
#define IS_TABLE_CELL(frameType)\
((nsLayoutAtoms::tableCellFrame == frameType) || (nsLayoutAtoms::bcTableCellFrame == frameType))
@@ -163,7 +164,9 @@ nsHTMLReflowState::nsHTMLReflowState(nsIPresContext* aPresContext,
mSpaceManager = aParentReflowState.mSpaceManager;
mLineLayout = aParentReflowState.mLineLayout;
mFlags.mIsTopOfPage = aParentReflowState.mFlags.mIsTopOfPage;
mPercentHeightObserver = aParentReflowState.mPercentHeightObserver;
mPercentHeightObserver = (aParentReflowState.mPercentHeightObserver &&
aParentReflowState.mPercentHeightObserver->NeedsToObserve(*this))
? aParentReflowState.mPercentHeightObserver : nsnull;
mPercentHeightReflowInitiator = aParentReflowState.mPercentHeightReflowInitiator;
if (aInit) {
@@ -195,7 +198,9 @@ nsHTMLReflowState::nsHTMLReflowState(nsIPresContext* aPresContext,
mSpaceManager = aParentReflowState.mSpaceManager;
mLineLayout = aParentReflowState.mLineLayout;
mFlags.mIsTopOfPage = aParentReflowState.mFlags.mIsTopOfPage;
mPercentHeightObserver = aParentReflowState.mPercentHeightObserver;
mPercentHeightObserver = (aParentReflowState.mPercentHeightObserver &&
aParentReflowState.mPercentHeightObserver->NeedsToObserve(*this))
? aParentReflowState.mPercentHeightObserver : nsnull;
mPercentHeightReflowInitiator = aParentReflowState.mPercentHeightReflowInitiator;
Init(aPresContext);
@@ -226,7 +231,9 @@ nsHTMLReflowState::nsHTMLReflowState(nsIPresContext* aPresContext,
mSpaceManager = aParentReflowState.mSpaceManager;
mLineLayout = aParentReflowState.mLineLayout;
mFlags.mIsTopOfPage = aParentReflowState.mFlags.mIsTopOfPage;
mPercentHeightObserver = aParentReflowState.mPercentHeightObserver;
mPercentHeightObserver = (aParentReflowState.mPercentHeightObserver &&
aParentReflowState.mPercentHeightObserver->NeedsToObserve(*this))
? aParentReflowState.mPercentHeightObserver : nsnull;
mPercentHeightReflowInitiator = aParentReflowState.mPercentHeightReflowInitiator;
Init(aPresContext, aContainingBlockWidth, aContainingBlockHeight);
@@ -1367,7 +1374,7 @@ CalcQuirkContainingBlockHeight(const nsHTMLReflowState& aReflowState,
nscoord result = 0;
const nsHTMLReflowState* rs = &aReflowState;
for (; rs; rs = (nsHTMLReflowState *)(rs->parentReflowState)) {
for (; rs && rs->frame; rs = (nsHTMLReflowState *)(rs->parentReflowState)) {
nsCOMPtr<nsIAtom> frameType;
rs->frame->GetFrameType(getter_AddRefs(frameType));
// if the ancestor is auto height then skip it and continue up if it
@@ -1405,18 +1412,28 @@ CalcQuirkContainingBlockHeight(const nsHTMLReflowState& aReflowState,
rs = scrollState;
}
}
else if (nsLayoutAtoms::pageContentFrame == frameType.get()) {
nsIFrame* prevInFlow;
rs->frame->GetPrevInFlow(&prevInFlow);
// only use the page content frame for a height basis if it is the first in flow
if (prevInFlow)
break;
}
else {
break;
}
// if the ancestor has a computed height, it is the percent base
result = rs->mComputedHeight;
// if the ancestor is the page content frame then the percent base is
// the avail height, otherwise it is the computed height
result = (nsLayoutAtoms::pageContentFrame == frameType.get())
? rs->availableHeight : rs->mComputedHeight;
// if unconstrained - don't sutract borders - would result in huge height
if (NS_AUTOHEIGHT == result) return result;
// if we got to the canvas frame, then subtract out
// if we got to the canvas or page content frame, then subtract out
// margin/border/padding for the BODY and HTML elements
if (nsLayoutAtoms::canvasFrame == frameType.get()) {
if ((nsLayoutAtoms::canvasFrame == frameType.get()) ||
(nsLayoutAtoms::pageContentFrame == frameType.get())) {
result -= GetVerticalMarginBorderPadding(firstBlockRS);
result -= GetVerticalMarginBorderPadding(firstAreaRS);