1999-01-05 22:44:41 +03:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#include "nsFrameReflowState.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIFrame.h"
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#include "nsIHTMLReflow.h"
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#include "nsIContent.h"
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#include "nsHTMLAtoms.h"
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1999-01-13 09:37:31 +03:00
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#include "nsIPresContext.h"
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#include "nsIPresShell.h"
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1999-01-05 22:44:41 +03:00
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PRBool
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nsHTMLReflowState::HaveFixedContentWidth() const
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{
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const nsStylePosition* pos;
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frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)pos);
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// What about 'inherit'?
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return eStyleUnit_Auto != pos->mWidth.GetUnit();
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}
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PRBool
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nsHTMLReflowState::HaveFixedContentHeight() const
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{
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const nsStylePosition* pos;
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frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)pos);
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// What about 'inherit'?
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return eStyleUnit_Auto != pos->mHeight.GetUnit();
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}
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const nsHTMLReflowState*
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nsHTMLReflowState::GetContainingBlockReflowState(const nsReflowState* aParentRS)
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{
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while (nsnull != aParentRS) {
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if (nsnull != aParentRS->frame) {
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PRBool isContainingBlock;
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// XXX This needs to go and we need to start using the info in the
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// reflow state...
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nsresult rv = aParentRS->frame->IsPercentageBase(isContainingBlock);
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if (NS_SUCCEEDED(rv) && isContainingBlock) {
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return (const nsHTMLReflowState*) aParentRS;
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}
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}
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aParentRS = aParentRS->parentReflowState;
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}
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return nsnull;
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}
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const nsHTMLReflowState*
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nsHTMLReflowState::GetPageBoxReflowState(const nsReflowState* aParentRS)
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{
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// XXX write me as soon as we can ask a frame if it's a page frame...
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return nsnull;
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}
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nscoord
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nsHTMLReflowState::GetContainingBlockContentWidth(const nsReflowState* aParentRS)
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{
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nscoord width = 0;
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const nsHTMLReflowState* rs =
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GetContainingBlockReflowState(aParentRS);
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if (nsnull != rs) {
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return ((nsHTMLReflowState*)aParentRS)->computedWidth;/* XXX cast */
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}
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return width;
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}
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static inline PRBool
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IsReplaced(nsIAtom* aTag)
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{
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return (nsHTMLAtoms::img == aTag) ||
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(nsHTMLAtoms::applet == aTag) ||
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(nsHTMLAtoms::object == aTag) ||
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(nsHTMLAtoms::input == aTag) ||
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(nsHTMLAtoms::select == aTag) ||
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(nsHTMLAtoms::textarea == aTag) ||
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(nsHTMLAtoms::iframe == aTag);
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}
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// XXX there is no CLEAN way to detect the "replaced" attribute (yet)
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void
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nsHTMLReflowState::DetermineFrameType(nsIPresContext& aPresContext)
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{
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nsIAtom* tag = nsnull;
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nsIContent* content;
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if ((NS_OK == frame->GetContent(content)) && (nsnull != content)) {
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content->GetTag(tag);
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NS_RELEASE(content);
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}
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// Section 9.7 indicates that absolute position takes precedence
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// over float which takes precedence over display.
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const nsStyleDisplay* display;
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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const nsStylePosition* pos;
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frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)pos);
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if ((nsnull != pos) && (NS_STYLE_POSITION_ABSOLUTE == pos->mPosition)) {
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frameType = NS_CSS_FRAME_TYPE_ABSOLUTE;
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}
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else if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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frameType = NS_CSS_FRAME_TYPE_FLOATING;
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}
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else {
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switch (display->mDisplay) {
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case NS_STYLE_DISPLAY_BLOCK:
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case NS_STYLE_DISPLAY_LIST_ITEM:
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case NS_STYLE_DISPLAY_TABLE:
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frameType = NS_CSS_FRAME_TYPE_BLOCK;
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break;
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case NS_STYLE_DISPLAY_INLINE:
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case NS_STYLE_DISPLAY_MARKER:
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case NS_STYLE_DISPLAY_INLINE_TABLE:
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frameType = NS_CSS_FRAME_TYPE_INLINE;
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break;
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case NS_STYLE_DISPLAY_RUN_IN:
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case NS_STYLE_DISPLAY_COMPACT:
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// XXX need to look ahead at the frame's sibling
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frameType = NS_CSS_FRAME_TYPE_BLOCK;
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break;
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case NS_STYLE_DISPLAY_TABLE_CELL:
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case NS_STYLE_DISPLAY_TABLE_CAPTION:
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case NS_STYLE_DISPLAY_TABLE_ROW_GROUP:
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case NS_STYLE_DISPLAY_TABLE_COLUMN:
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case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
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case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
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case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
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case NS_STYLE_DISPLAY_TABLE_ROW:
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frameType = NS_CSS_FRAME_TYPE_INTERNAL_TABLE;
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break;
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case NS_STYLE_DISPLAY_NONE:
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default:
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frameType = NS_CSS_FRAME_TYPE_UNKNOWN;
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break;
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}
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}
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if (IsReplaced(tag)) {
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frameType = NS_FRAME_REPLACED(frameType);
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}
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NS_IF_RELEASE(tag);
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}
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// Helper function that re-calculates the left and right margin based on
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// the width of the containing block, the border/padding, and the computed
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// width.
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//
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// This function is called by InitConstraints() when the 'width' property
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// has a value other than 'auto'
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void
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nsHTMLReflowState::CalculateLeftRightMargin(const nsHTMLReflowState* aContainingBlockRS,
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const nsStyleSpacing* aSpacing,
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nscoord aComputedWidth,
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const nsMargin& aBorderPadding,
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nscoord& aComputedLeftMargin,
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nscoord& aComputedRightMargin)
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{
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PRBool isAutoLeftMargin = eStyleUnit_Auto == aSpacing->mMargin.GetLeftUnit();
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PRBool isAutoRightMargin = eStyleUnit_Auto == aSpacing->mMargin.GetRightUnit();
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// Calculate how much space is available for margins
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nscoord availMarginSpace = aContainingBlockRS->computedWidth - aComputedWidth -
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aBorderPadding.left - aBorderPadding.right;
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// See whether we're over constrained
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if (!isAutoLeftMargin && !isAutoRightMargin) {
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// Neither margin is 'auto' so we're over constrained. Use the
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// 'direction' property to tell which margin to ignore
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const nsStyleDisplay* display;
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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if (NS_STYLE_DIRECTION_LTR == display->mDirection) {
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isAutoRightMargin = PR_TRUE;
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} else {
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isAutoLeftMargin = PR_TRUE;
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}
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}
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if (isAutoLeftMargin) {
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if (isAutoRightMargin) {
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// Both margins are 'auto' so their computed values are equal
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if (availMarginSpace <= 0) {
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aComputedLeftMargin = aComputedRightMargin = 0;
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} else {
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1999-01-13 09:37:31 +03:00
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aComputedLeftMargin = availMarginSpace / 2;
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1999-01-05 22:44:41 +03:00
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aComputedRightMargin = availMarginSpace - aComputedLeftMargin;
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}
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} else {
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aComputedLeftMargin = PR_MAX(0, availMarginSpace - aComputedRightMargin);
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}
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} else if (isAutoRightMargin) {
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aComputedRightMargin = PR_MAX(0, availMarginSpace - aComputedLeftMargin);
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}
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}
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1999-01-16 23:58:17 +03:00
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void
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nsHTMLReflowState::ComputeRelativeOffsets(const nsHTMLReflowState* cbrs,
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const nsStylePosition* aPosition)
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{
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nsStyleCoord coord;
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const nsHTMLReflowState* pcbrs = nsnull;
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// If any of the offsets are 'inherit' we need to find the positioned
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// containing block
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if ((eStyleUnit_Inherit == aPosition->mOffset.GetLeftUnit()) ||
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(eStyleUnit_Inherit == aPosition->mOffset.GetTopUnit()) ||
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(eStyleUnit_Inherit == aPosition->mOffset.GetRightUnit()) ||
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(eStyleUnit_Inherit == aPosition->mOffset.GetBottomUnit())) {
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pcbrs = cbrs;
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while (nsnull != pcbrs) {
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const nsStylePosition* position;
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pcbrs->frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
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if ((NS_STYLE_POSITION_ABSOLUTE == position->mPosition) ||
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(NS_STYLE_POSITION_RELATIVE == position->mPosition)) {
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break;
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}
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pcbrs = (const nsHTMLReflowState*)pcbrs->parentReflowState; // XXX cast
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}
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}
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// For relatively positioned elements 'auto' becomes 0
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if (eStyleUnit_Inherit == aPosition->mOffset.GetLeftUnit()) {
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computedOffsets.left = pcbrs ? pcbrs->computedOffsets.left : 0;
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} else if (eStyleUnit_Auto == aPosition->mOffset.GetLeftUnit()) {
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computedOffsets.left = 0;
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} else {
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ComputeHorizontalValue(cbrs->computedWidth, aPosition->mOffset.GetLeftUnit(),
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aPosition->mOffset.GetLeft(coord),
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computedOffsets.left);
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}
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if (eStyleUnit_Inherit == aPosition->mOffset.GetTopUnit()) {
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computedOffsets.top = pcbrs ? pcbrs->computedOffsets.top : 0;
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} else if ((eStyleUnit_Auto == aPosition->mOffset.GetTopUnit()) ||
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((NS_AUTOHEIGHT == cbrs->computedHeight) &&
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(eStyleUnit_Percent == aPosition->mOffset.GetTopUnit()))) {
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computedOffsets.top = 0;
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} else {
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ComputeVerticalValue(cbrs->computedHeight, aPosition->mOffset.GetTopUnit(),
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aPosition->mOffset.GetTop(coord),
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computedOffsets.top);
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}
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if (eStyleUnit_Inherit == aPosition->mOffset.GetRightUnit()) {
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computedOffsets.right = pcbrs ? pcbrs->computedOffsets.right : 0;
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} else if (eStyleUnit_Auto == aPosition->mOffset.GetRightUnit()) {
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computedOffsets.right = 0;
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} else {
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ComputeHorizontalValue(cbrs->computedWidth, aPosition->mOffset.GetRightUnit(),
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aPosition->mOffset.GetRight(coord),
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computedOffsets.right);
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}
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if (eStyleUnit_Inherit == aPosition->mOffset.GetBottomUnit()) {
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computedOffsets.bottom = pcbrs ? pcbrs->computedOffsets.bottom : 0;
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} else if ((eStyleUnit_Auto == aPosition->mOffset.GetBottomUnit()) ||
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((NS_AUTOHEIGHT == cbrs->computedHeight) &&
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(eStyleUnit_Percent == aPosition->mOffset.GetBottomUnit()))) {
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computedOffsets.bottom = 0;
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} else {
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ComputeVerticalValue(cbrs->computedHeight, aPosition->mOffset.GetBottomUnit(),
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aPosition->mOffset.GetBottom(coord),
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computedOffsets.bottom);
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}
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}
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1999-01-13 09:37:31 +03:00
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void
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nsHTMLReflowState::InitAbsoluteConstraints(nsIPresContext& aPresContext,
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const nsHTMLReflowState* cbrs,
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const nsStylePosition* aPosition,
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nscoord containingBlockWidth,
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nscoord containingBlockHeight)
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{
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const nsStyleSpacing* spacing;
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frame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
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const nsStyleDisplay* display;
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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// If any of the offsets are 'auto', then get the placeholder frame and compute
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// its origin relative to the containing block
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nsPoint placeholderOffset(0, 0);
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if ((eStyleUnit_Auto == aPosition->mOffset.GetLeftUnit()) ||
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|
|
|
(eStyleUnit_Auto == aPosition->mOffset.GetTopUnit()) ||
|
|
|
|
|
(eStyleUnit_Auto == aPosition->mOffset.GetRightUnit()) ||
|
|
|
|
|
(eStyleUnit_Auto == aPosition->mOffset.GetBottomUnit())) {
|
|
|
|
|
|
|
|
|
|
// Get the placeholder frame
|
|
|
|
|
nsIFrame* placeholderFrame;
|
|
|
|
|
nsIPresShell* presShell = aPresContext.GetShell();
|
|
|
|
|
|
|
|
|
|
presShell->GetPlaceholderFrameFor(frame, placeholderFrame);
|
|
|
|
|
NS_RELEASE(presShell);
|
|
|
|
|
NS_ASSERTION(nsnull != placeholderFrame, "no placeholder frame");
|
|
|
|
|
if (nsnull != placeholderFrame) {
|
|
|
|
|
placeholderFrame->GetOrigin(placeholderOffset);
|
|
|
|
|
|
|
|
|
|
nsIFrame* parent;
|
1999-01-14 08:16:23 +03:00
|
|
|
placeholderFrame->GetParent(parent);
|
1999-01-13 09:37:31 +03:00
|
|
|
while ((nsnull != parent) && (parent != cbrs->frame)) {
|
|
|
|
|
nsPoint origin;
|
|
|
|
|
|
|
|
|
|
parent->GetOrigin(origin);
|
|
|
|
|
placeholderOffset += origin;
|
1999-01-14 08:16:23 +03:00
|
|
|
parent->GetParent(parent);
|
1999-01-13 09:37:31 +03:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Compute border and padding
|
|
|
|
|
nsMargin borderPadding;
|
|
|
|
|
ComputeBorderPaddingFor(frame, parentReflowState, borderPadding);
|
|
|
|
|
|
|
|
|
|
nsStyleUnit widthUnit = aPosition->mWidth.GetUnit();
|
|
|
|
|
nsStyleUnit heightUnit = aPosition->mHeight.GetUnit();
|
|
|
|
|
|
|
|
|
|
// Initialize the 'left' and 'right' computed offsets
|
|
|
|
|
PRBool leftIsAuto = PR_FALSE, rightIsAuto = PR_FALSE;
|
|
|
|
|
nsStyleCoord coord;
|
1999-01-16 23:58:17 +03:00
|
|
|
if (eStyleUnit_Inherit == aPosition->mOffset.GetLeftUnit()) {
|
|
|
|
|
computedOffsets.left = cbrs->computedOffsets.left;
|
|
|
|
|
} else if (eStyleUnit_Auto == aPosition->mOffset.GetLeftUnit()) {
|
1999-01-13 09:37:31 +03:00
|
|
|
if (NS_STYLE_DIRECTION_LTR == display->mDirection) {
|
|
|
|
|
computedOffsets.left = placeholderOffset.x;
|
|
|
|
|
} else {
|
|
|
|
|
computedOffsets.left = 0;
|
|
|
|
|
leftIsAuto = PR_TRUE;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, aPosition->mOffset.GetLeftUnit(),
|
|
|
|
|
aPosition->mOffset.GetLeft(coord),
|
|
|
|
|
computedOffsets.left);
|
|
|
|
|
}
|
1999-01-16 23:58:17 +03:00
|
|
|
if (eStyleUnit_Inherit == aPosition->mOffset.GetRightUnit()) {
|
|
|
|
|
computedOffsets.right = cbrs->computedOffsets.right;
|
|
|
|
|
} else if (eStyleUnit_Auto == aPosition->mOffset.GetRightUnit()) {
|
1999-01-13 09:37:31 +03:00
|
|
|
if (NS_STYLE_DIRECTION_RTL == display->mDirection) {
|
|
|
|
|
computedOffsets.right = placeholderOffset.x;
|
|
|
|
|
} else {
|
|
|
|
|
computedOffsets.right = 0;
|
|
|
|
|
rightIsAuto = PR_TRUE;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, aPosition->mOffset.GetRightUnit(),
|
|
|
|
|
aPosition->mOffset.GetRight(coord),
|
|
|
|
|
computedOffsets.right);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Calculate the computed width
|
|
|
|
|
if (eStyleUnit_Auto == widthUnit) {
|
|
|
|
|
// Any remaining 'auto' values for 'left', 'right', 'margin-left', or
|
|
|
|
|
// 'margin-right' are replaced with 0 (their default value)
|
|
|
|
|
computedWidth = containingBlockWidth - computedOffsets.left -
|
|
|
|
|
computedLeftMargin - borderPadding.left - borderPadding.right -
|
|
|
|
|
computedRightMargin - computedOffsets.right;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
// Use the specified value for the computed width
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, widthUnit, aPosition->mWidth,
|
|
|
|
|
computedWidth);
|
|
|
|
|
|
|
|
|
|
if (leftIsAuto) {
|
|
|
|
|
// Any 'auto' on 'margin-left' or 'margin-right' are replaced with 0
|
|
|
|
|
// (their default value)
|
|
|
|
|
computedOffsets.left = containingBlockWidth - computedLeftMargin -
|
|
|
|
|
borderPadding.left - computedWidth - borderPadding.right -
|
|
|
|
|
computedRightMargin - computedOffsets.right;
|
|
|
|
|
|
|
|
|
|
} else if (rightIsAuto) {
|
|
|
|
|
// Any 'auto' on 'margin-left' or 'margin-right' are replaced with 0
|
|
|
|
|
// (their default value)
|
|
|
|
|
computedOffsets.right = containingBlockWidth - computedOffsets.left -
|
|
|
|
|
computedLeftMargin - borderPadding.left - computedWidth -
|
|
|
|
|
borderPadding.right - computedRightMargin;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
// All that's left to solve for are 'auto' values for 'margin-left' and
|
|
|
|
|
// 'margin-right'
|
|
|
|
|
if ((eStyleUnit_Auto == spacing->mMargin.GetLeftUnit()) ||
|
|
|
|
|
(eStyleUnit_Auto == spacing->mMargin.GetRightUnit())) {
|
|
|
|
|
|
|
|
|
|
nscoord availMarginSpace = containingBlockWidth - computedOffsets.left -
|
|
|
|
|
borderPadding.left - computedWidth - borderPadding.right -
|
|
|
|
|
computedOffsets.right;
|
|
|
|
|
|
|
|
|
|
if (availMarginSpace > 0) {
|
|
|
|
|
if (eStyleUnit_Auto == spacing->mMargin.GetLeftUnit()) {
|
|
|
|
|
if (eStyleUnit_Auto == spacing->mMargin.GetRightUnit()) {
|
|
|
|
|
// Both 'margin-left' and 'margin-right' are 'auto', so they get
|
|
|
|
|
// equal values
|
|
|
|
|
computedLeftMargin = availMarginSpace / 2;
|
|
|
|
|
computedRightMargin = availMarginSpace - computedLeftMargin;
|
|
|
|
|
} else {
|
|
|
|
|
computedLeftMargin = availMarginSpace;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
computedRightMargin = availMarginSpace;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Initialize the 'top' and 'bottom' computed offsets
|
|
|
|
|
PRBool bottomIsAuto = PR_FALSE;
|
1999-01-16 23:58:17 +03:00
|
|
|
if (eStyleUnit_Inherit == aPosition->mOffset.GetTopUnit()) {
|
|
|
|
|
computedOffsets.top = cbrs->computedOffsets.top;
|
|
|
|
|
} else if ((eStyleUnit_Auto == aPosition->mOffset.GetTopUnit()) ||
|
1999-01-15 07:28:17 +03:00
|
|
|
((NS_AUTOHEIGHT == containingBlockHeight) &&
|
|
|
|
|
(eStyleUnit_Percent == aPosition->mOffset.GetTopUnit()))) {
|
1999-01-13 09:37:31 +03:00
|
|
|
// Use the placeholder position
|
|
|
|
|
computedOffsets.top = placeholderOffset.y;
|
|
|
|
|
} else {
|
|
|
|
|
nsStyleCoord coord;
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, aPosition->mOffset.GetTopUnit(),
|
|
|
|
|
aPosition->mOffset.GetTop(coord), computedOffsets.top);
|
|
|
|
|
}
|
1999-01-16 23:58:17 +03:00
|
|
|
if (eStyleUnit_Inherit == aPosition->mOffset.GetBottomUnit()) {
|
|
|
|
|
computedOffsets.bottom = cbrs->computedOffsets.bottom;
|
|
|
|
|
} else if ((eStyleUnit_Auto == aPosition->mOffset.GetBottomUnit()) ||
|
1999-01-15 07:28:17 +03:00
|
|
|
((NS_AUTOHEIGHT == containingBlockHeight) &&
|
|
|
|
|
(eStyleUnit_Percent == aPosition->mOffset.GetBottomUnit()))) {
|
1999-01-13 09:37:31 +03:00
|
|
|
if (eStyleUnit_Auto == heightUnit) {
|
|
|
|
|
computedOffsets.bottom = 0;
|
|
|
|
|
} else {
|
|
|
|
|
bottomIsAuto = PR_TRUE;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
nsStyleCoord coord;
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, aPosition->mOffset.GetBottomUnit(),
|
|
|
|
|
aPosition->mOffset.GetBottom(coord), computedOffsets.bottom);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Check for a percentage based height and a containing block height
|
|
|
|
|
// that depends on its content height, i.e., not explicitly specified
|
|
|
|
|
if (eStyleUnit_Percent == heightUnit) {
|
|
|
|
|
if (NS_AUTOHEIGHT == containingBlockHeight) {
|
|
|
|
|
// Interpret the height like 'auto'
|
|
|
|
|
heightUnit = eStyleUnit_Auto;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Calculate the computed height
|
|
|
|
|
if (eStyleUnit_Auto == heightUnit) {
|
|
|
|
|
// Any 'auto' on 'margin-top' or 'margin-bottom' are replaced with 0
|
|
|
|
|
// (their default value)
|
|
|
|
|
if (NS_FRAME_IS_REPLACED(frameType)) {
|
|
|
|
|
computedHeight = NS_INTRINSICSIZE;
|
|
|
|
|
} else {
|
|
|
|
|
// If the containing block's height was not explicitly specified (i.e.,
|
|
|
|
|
// it depends on its content height), then so does our height
|
|
|
|
|
if (NS_AUTOHEIGHT == containingBlockHeight) {
|
|
|
|
|
computedHeight = NS_AUTOHEIGHT;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
computedHeight = containingBlockHeight - computedOffsets.top -
|
|
|
|
|
computedTopMargin - borderPadding.top - borderPadding.bottom -
|
|
|
|
|
computedBottomMargin - computedOffsets.bottom;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
// Use the specified value for the computed height
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, heightUnit, aPosition->mHeight,
|
|
|
|
|
computedHeight);
|
|
|
|
|
|
|
|
|
|
if (NS_AUTOHEIGHT != containingBlockHeight) {
|
|
|
|
|
if (bottomIsAuto) {
|
|
|
|
|
// Any 'auto' on 'margin-top' or 'margin-bottom' are replaced with 0
|
|
|
|
|
computedOffsets.bottom = containingBlockHeight - computedOffsets.top -
|
|
|
|
|
computedTopMargin - borderPadding.top - computedHeight -
|
|
|
|
|
borderPadding.bottom - computedBottomMargin;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
// All that's left to solve for are 'auto' values for 'margin-top' and
|
|
|
|
|
// 'margin-bottom'
|
|
|
|
|
if ((eStyleUnit_Auto == spacing->mMargin.GetTopUnit()) ||
|
|
|
|
|
(eStyleUnit_Auto == spacing->mMargin.GetBottomUnit())) {
|
|
|
|
|
|
|
|
|
|
nscoord availMarginSpace = containingBlockHeight - computedOffsets.top -
|
|
|
|
|
borderPadding.top - computedHeight - borderPadding.bottom -
|
|
|
|
|
computedOffsets.bottom;
|
|
|
|
|
|
|
|
|
|
if (availMarginSpace > 0) {
|
|
|
|
|
if (eStyleUnit_Auto == spacing->mMargin.GetTopUnit()) {
|
|
|
|
|
if (eStyleUnit_Auto == spacing->mMargin.GetBottomUnit()) {
|
|
|
|
|
// Both 'margin-top' and 'margin-bottom' are 'auto', so they get
|
|
|
|
|
// equal values
|
|
|
|
|
computedTopMargin = availMarginSpace / 2;
|
|
|
|
|
computedBottomMargin = availMarginSpace - computedTopMargin;
|
|
|
|
|
} else {
|
|
|
|
|
computedTopMargin = availMarginSpace;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
computedBottomMargin = availMarginSpace;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
1999-01-05 22:44:41 +03:00
|
|
|
void
|
|
|
|
|
nsHTMLReflowState::InitConstraints(nsIPresContext& aPresContext)
|
|
|
|
|
{
|
|
|
|
|
const nsStylePosition* pos;
|
|
|
|
|
nsresult result = frame->GetStyleData(eStyleStruct_Position,
|
|
|
|
|
(const nsStyleStruct*&)pos);
|
|
|
|
|
|
|
|
|
|
// If this is the root frame then set the computed width and
|
|
|
|
|
// height equal to the available space
|
|
|
|
|
if (nsnull == parentReflowState) {
|
1999-01-06 02:31:18 +03:00
|
|
|
computedWidth = availableWidth;
|
|
|
|
|
computedHeight = availableHeight;
|
1999-01-16 23:58:17 +03:00
|
|
|
computedLeftMargin = computedRightMargin = computedTopMargin = computedBottomMargin = 0;
|
1999-01-05 22:44:41 +03:00
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
// Get the containing block reflow state
|
|
|
|
|
const nsHTMLReflowState* cbrs =
|
|
|
|
|
GetContainingBlockReflowState(parentReflowState);
|
|
|
|
|
NS_ASSERTION(nsnull != cbrs, "no containing block");
|
|
|
|
|
|
1999-01-16 23:58:17 +03:00
|
|
|
// See if the element is relatively positioned
|
|
|
|
|
if (NS_STYLE_POSITION_RELATIVE == pos->mPosition) {
|
|
|
|
|
ComputeRelativeOffsets(cbrs, pos);
|
|
|
|
|
} else {
|
|
|
|
|
// Initialize offsets to 0
|
|
|
|
|
computedOffsets.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Compute margins from the specified margin style information
|
|
|
|
|
nsMargin margin;
|
|
|
|
|
ComputeMarginFor(frame, parentReflowState, margin);
|
|
|
|
|
|
|
|
|
|
// These become the default computed values, and may be adjusted below
|
|
|
|
|
computedLeftMargin = margin.left;
|
|
|
|
|
computedRightMargin = margin.right;
|
|
|
|
|
computedTopMargin = margin.top;
|
|
|
|
|
computedBottomMargin = margin.bottom;
|
|
|
|
|
|
|
|
|
|
// Calculate the line height.
|
|
|
|
|
// XXX Do we need to do this for all elements or just inline non-replaced
|
|
|
|
|
// elements?
|
|
|
|
|
mLineHeight = CalcLineHeight(aPresContext, frame);
|
|
|
|
|
|
|
|
|
|
// See if it's an inline non-replaced element
|
|
|
|
|
if (NS_CSS_FRAME_TYPE_INLINE == frameType) {
|
|
|
|
|
// 'width' property doesn't apply to inline non-replaced elements. The
|
|
|
|
|
// 'height' is given by the element's 'line-height' value
|
|
|
|
|
if (mLineHeight >= 0) {
|
|
|
|
|
computedHeight = mLineHeight;
|
|
|
|
|
}
|
|
|
|
|
return; // nothing else to compute
|
|
|
|
|
}
|
|
|
|
|
|
1999-01-05 22:44:41 +03:00
|
|
|
// Get the containing block width and height. We'll need them when
|
|
|
|
|
// calculating the computed width and height. For all elements other
|
|
|
|
|
// than absolutely positioned elements, the containing block is formed
|
|
|
|
|
// by the content edge
|
|
|
|
|
nscoord containingBlockWidth = cbrs->computedWidth;
|
|
|
|
|
nscoord containingBlockHeight = cbrs->computedHeight;
|
1999-01-09 04:43:02 +03:00
|
|
|
//NS_ASSERTION(0 != containingBlockWidth, "containing block width of 0");
|
1999-01-05 22:44:41 +03:00
|
|
|
nsStyleUnit widthUnit = pos->mWidth.GetUnit();
|
|
|
|
|
nsStyleUnit heightUnit = pos->mHeight.GetUnit();
|
|
|
|
|
|
|
|
|
|
// It's possible the child's max width is less than the width of the
|
|
|
|
|
// containing block (e.g., for scrolled elements because we subtract for
|
|
|
|
|
// the scrollbar width).
|
|
|
|
|
// XXX Don't do this if the max width is 0, which is the case for floaters...
|
1999-01-06 02:31:18 +03:00
|
|
|
if ((availableWidth < containingBlockWidth) && (availableWidth > 0)) {
|
|
|
|
|
containingBlockWidth = availableWidth;
|
1999-01-05 22:44:41 +03:00
|
|
|
}
|
|
|
|
|
|
1999-01-13 09:37:31 +03:00
|
|
|
// Check for a percentage based width and an unconstrained containing
|
|
|
|
|
// block width
|
|
|
|
|
if (eStyleUnit_Percent == widthUnit) {
|
|
|
|
|
if (NS_UNCONSTRAINEDSIZE == cbrs->computedWidth) {
|
|
|
|
|
// Interpret the width like 'auto'
|
|
|
|
|
widthUnit = eStyleUnit_Auto;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
// Check for a percentage based height and a containing block height
|
|
|
|
|
// that depends on the content height
|
1999-01-05 22:44:41 +03:00
|
|
|
if (eStyleUnit_Percent == heightUnit) {
|
|
|
|
|
if (NS_AUTOHEIGHT == cbrs->computedHeight) {
|
1999-01-13 09:37:31 +03:00
|
|
|
// Interpret the height like 'auto'
|
1999-01-05 22:44:41 +03:00
|
|
|
heightUnit = eStyleUnit_Auto;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Calculate the computed width and height. This varies by frame type
|
|
|
|
|
if ((NS_FRAME_REPLACED(NS_CSS_FRAME_TYPE_INLINE) == frameType) ||
|
|
|
|
|
(NS_FRAME_REPLACED(NS_CSS_FRAME_TYPE_FLOATING) == frameType)) {
|
|
|
|
|
// Inline replaced element and floating replaced element are basically
|
|
|
|
|
// treated the same
|
|
|
|
|
if (eStyleUnit_Auto == widthUnit) {
|
|
|
|
|
// A specified value of 'auto' uses the element's intrinsic width
|
|
|
|
|
computedWidth = NS_INTRINSICSIZE;
|
|
|
|
|
} else {
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, widthUnit, pos->mWidth,
|
|
|
|
|
computedWidth);
|
|
|
|
|
}
|
|
|
|
|
if (eStyleUnit_Auto == heightUnit) {
|
|
|
|
|
// A specified value of 'auto' uses the element's intrinsic height
|
|
|
|
|
computedHeight = NS_INTRINSICSIZE;
|
|
|
|
|
} else {
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, heightUnit, pos->mHeight,
|
|
|
|
|
computedHeight);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} else if (NS_CSS_FRAME_TYPE_FLOATING == frameType) {
|
|
|
|
|
// Floating non-replaced element
|
|
|
|
|
if (eStyleUnit_Auto == widthUnit) {
|
|
|
|
|
// A specified value of 'auto' becomes a computed width of 0
|
|
|
|
|
computedWidth = 0;
|
|
|
|
|
} else {
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, widthUnit, pos->mWidth,
|
|
|
|
|
computedWidth);
|
|
|
|
|
}
|
|
|
|
|
if (eStyleUnit_Auto == heightUnit) {
|
|
|
|
|
computedHeight = NS_AUTOHEIGHT; // let it choose its height
|
|
|
|
|
} else {
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, heightUnit, pos->mHeight,
|
|
|
|
|
computedHeight);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} else if (NS_CSS_FRAME_TYPE_INTERNAL_TABLE == frameType) {
|
|
|
|
|
// Internal table elements. The rules vary depending on the type
|
|
|
|
|
const nsStyleDisplay* display;
|
|
|
|
|
frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
|
|
|
|
|
|
|
|
|
|
// Calculate the computed width
|
|
|
|
|
if ((NS_STYLE_DISPLAY_TABLE_ROW == display->mDisplay) ||
|
|
|
|
|
(NS_STYLE_DISPLAY_TABLE_ROW_GROUP == display->mDisplay)) {
|
|
|
|
|
// 'width' property doesn't apply to table rows and row groups
|
|
|
|
|
widthUnit = eStyleUnit_Auto;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (eStyleUnit_Auto == widthUnit) {
|
1999-01-13 09:37:31 +03:00
|
|
|
computedWidth = availableWidth;
|
|
|
|
|
|
|
|
|
|
if (computedWidth != NS_UNCONSTRAINEDSIZE) {
|
|
|
|
|
// Internal table elements don't have margins, but they have border
|
|
|
|
|
// and padding
|
|
|
|
|
nsMargin borderPadding;
|
|
|
|
|
ComputeBorderPaddingFor(frame, parentReflowState, borderPadding);
|
|
|
|
|
computedWidth -= borderPadding.left + borderPadding.right;
|
|
|
|
|
}
|
|
|
|
|
|
1999-01-05 22:44:41 +03:00
|
|
|
} else {
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, widthUnit, pos->mWidth,
|
|
|
|
|
computedWidth);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Calculate the computed height
|
|
|
|
|
if ((NS_STYLE_DISPLAY_TABLE_COLUMN == display->mDisplay) ||
|
|
|
|
|
(NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == display->mDisplay)) {
|
|
|
|
|
// 'height' property doesn't apply to table columns and column groups
|
|
|
|
|
heightUnit = eStyleUnit_Auto;
|
|
|
|
|
}
|
|
|
|
|
if (eStyleUnit_Auto == heightUnit) {
|
|
|
|
|
computedHeight = NS_AUTOHEIGHT;
|
|
|
|
|
} else {
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, heightUnit, pos->mHeight,
|
|
|
|
|
computedHeight);
|
|
|
|
|
}
|
|
|
|
|
|
1999-01-13 09:37:31 +03:00
|
|
|
} else if (NS_FRAME_GET_TYPE(frameType) == NS_CSS_FRAME_TYPE_ABSOLUTE) {
|
|
|
|
|
InitAbsoluteConstraints(aPresContext, cbrs, pos, containingBlockWidth,
|
|
|
|
|
containingBlockHeight);
|
|
|
|
|
|
1999-01-05 22:44:41 +03:00
|
|
|
} else {
|
1999-01-13 09:37:31 +03:00
|
|
|
// Block-level elements
|
1999-01-05 22:44:41 +03:00
|
|
|
const nsStyleSpacing* spacing;
|
|
|
|
|
frame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
|
|
|
|
|
|
|
|
|
|
// Compute border and padding
|
|
|
|
|
nsMargin borderPadding;
|
|
|
|
|
ComputeBorderPaddingFor(frame, parentReflowState, borderPadding);
|
|
|
|
|
|
|
|
|
|
// Compute the content width
|
|
|
|
|
if (eStyleUnit_Auto == widthUnit) {
|
|
|
|
|
if (NS_FRAME_IS_REPLACED(frameType)) {
|
|
|
|
|
// Block-level replaced element in the flow. A specified value of
|
|
|
|
|
// 'auto' uses the element's intrinsic width
|
|
|
|
|
computedWidth = NS_INTRINSICSIZE;
|
|
|
|
|
|
|
|
|
|
} else {
|
1999-01-13 09:37:31 +03:00
|
|
|
// Block-level non-replaced element in the flow
|
|
|
|
|
if (NS_UNCONSTRAINEDSIZE == containingBlockWidth) {
|
|
|
|
|
computedWidth = NS_UNCONSTRAINEDSIZE;
|
|
|
|
|
} else {
|
|
|
|
|
// Block-level non-replaced element in the flow. 'auto' values for
|
|
|
|
|
// margin-left and margin-right become 0 and the sum of the areas must
|
|
|
|
|
// equal the width of the containing block
|
|
|
|
|
computedWidth = containingBlockWidth - computedLeftMargin - computedRightMargin -
|
|
|
|
|
borderPadding.left - borderPadding.right;
|
|
|
|
|
}
|
1999-01-05 22:44:41 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, widthUnit, pos->mWidth,
|
|
|
|
|
computedWidth);
|
|
|
|
|
|
|
|
|
|
// Calculate the computed left and right margin again taking into
|
|
|
|
|
// account the computed width, border/padding, and width of the
|
|
|
|
|
// containing block
|
|
|
|
|
CalculateLeftRightMargin(cbrs, spacing, computedWidth, borderPadding,
|
|
|
|
|
computedLeftMargin, computedRightMargin);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Compute the content height
|
|
|
|
|
if (eStyleUnit_Auto == heightUnit) {
|
|
|
|
|
if (NS_FRAME_IS_REPLACED(frameType)) {
|
|
|
|
|
computedHeight = NS_INTRINSICSIZE;
|
|
|
|
|
} else {
|
|
|
|
|
computedHeight = NS_AUTOHEIGHT;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
ComputeVerticalValue(containingBlockHeight, heightUnit, pos->mHeight,
|
|
|
|
|
computedHeight);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
nscoord
|
|
|
|
|
nsHTMLReflowState::CalcLineHeight(nsIPresContext& aPresContext,
|
|
|
|
|
nsIFrame* aFrame)
|
|
|
|
|
{
|
|
|
|
|
nscoord lineHeight = -1;
|
|
|
|
|
nsIStyleContext* sc;
|
|
|
|
|
aFrame->GetStyleContext(sc);
|
|
|
|
|
const nsStyleFont* elementFont = nsnull;
|
|
|
|
|
if (nsnull != sc) {
|
|
|
|
|
elementFont = (const nsStyleFont*)sc->GetStyleData(eStyleStruct_Font);
|
|
|
|
|
for (;;) {
|
|
|
|
|
const nsStyleText* text = (const nsStyleText*)
|
|
|
|
|
sc->GetStyleData(eStyleStruct_Text);
|
|
|
|
|
if (nsnull != text) {
|
|
|
|
|
nsStyleUnit unit = text->mLineHeight.GetUnit();
|
|
|
|
|
#ifdef NOISY_VERTICAL_ALIGN
|
|
|
|
|
printf(" styleUnit=%d\n", unit);
|
|
|
|
|
#endif
|
|
|
|
|
if (eStyleUnit_Enumerated == unit) {
|
|
|
|
|
// Normal value; we use 1.0 for normal
|
|
|
|
|
// XXX could come from somewhere else
|
|
|
|
|
break;
|
|
|
|
|
} else if (eStyleUnit_Factor == unit) {
|
|
|
|
|
if (nsnull != elementFont) {
|
|
|
|
|
// CSS2 spec says that the number is inherited, not the
|
|
|
|
|
// computed value. Therefore use the font size of the
|
|
|
|
|
// element times the inherited number.
|
|
|
|
|
nscoord size = elementFont->mFont.size;
|
|
|
|
|
lineHeight = nscoord(size * text->mLineHeight.GetFactorValue());
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
else if (eStyleUnit_Coord == unit) {
|
|
|
|
|
lineHeight = text->mLineHeight.GetCoordValue();
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
else if (eStyleUnit_Percent == unit) {
|
|
|
|
|
// XXX This could arguably be the font-metrics actual height
|
|
|
|
|
// instead since the spec says use the computed height.
|
|
|
|
|
const nsStyleFont* font = (const nsStyleFont*)
|
|
|
|
|
sc->GetStyleData(eStyleStruct_Font);
|
|
|
|
|
nscoord size = font->mFont.size;
|
|
|
|
|
lineHeight = nscoord(size * text->mLineHeight.GetPercentValue());
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
else if (eStyleUnit_Inherit == unit) {
|
|
|
|
|
nsIStyleContext* parentSC;
|
|
|
|
|
parentSC = sc->GetParent();
|
|
|
|
|
if (nsnull == parentSC) {
|
|
|
|
|
// Note: Break before releasing to avoid double-releasing sc
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
NS_RELEASE(sc);
|
|
|
|
|
sc = parentSC;
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
// other units are not part of the spec so don't bother
|
|
|
|
|
// looping
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
NS_RELEASE(sc);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return lineHeight;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
nsHTMLReflowState::ComputeHorizontalValue(nscoord aContainingBlockWidth,
|
|
|
|
|
nsStyleUnit aUnit,
|
|
|
|
|
const nsStyleCoord& aCoord,
|
|
|
|
|
nscoord& aResult)
|
|
|
|
|
{
|
1999-01-16 23:58:17 +03:00
|
|
|
NS_PRECONDITION(eStyleUnit_Inherit != aUnit, "unexpected unit");
|
1999-01-05 22:44:41 +03:00
|
|
|
aResult = 0;
|
|
|
|
|
if (eStyleUnit_Percent == aUnit) {
|
|
|
|
|
float pct = aCoord.GetPercentValue();
|
|
|
|
|
aResult = NSToCoordFloor(aContainingBlockWidth * pct);
|
|
|
|
|
|
|
|
|
|
} else if (eStyleUnit_Coord == aUnit) {
|
|
|
|
|
aResult = aCoord.GetCoordValue();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
nsHTMLReflowState::ComputeVerticalValue(nscoord aContainingBlockHeight,
|
|
|
|
|
nsStyleUnit aUnit,
|
|
|
|
|
const nsStyleCoord& aCoord,
|
|
|
|
|
nscoord& aResult)
|
|
|
|
|
{
|
1999-01-16 23:58:17 +03:00
|
|
|
NS_PRECONDITION(eStyleUnit_Inherit != aUnit, "unexpected unit");
|
1999-01-05 22:44:41 +03:00
|
|
|
aResult = 0;
|
|
|
|
|
if (eStyleUnit_Percent == aUnit) {
|
|
|
|
|
// Verify no one is trying to calculate a percentage based height against
|
|
|
|
|
// a height that's shrink wrapping to its content. In that case they should
|
|
|
|
|
// treat the specified value like 'auto'
|
|
|
|
|
NS_ASSERTION(NS_AUTOHEIGHT != aContainingBlockHeight, "unexpected containing block height");
|
|
|
|
|
float pct = aCoord.GetPercentValue();
|
|
|
|
|
aResult = NSToCoordFloor(aContainingBlockHeight * pct);
|
|
|
|
|
|
|
|
|
|
} else if (eStyleUnit_Coord == aUnit) {
|
|
|
|
|
aResult = aCoord.GetCoordValue();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
nsHTMLReflowState::ComputeMarginFor(nsIFrame* aFrame,
|
|
|
|
|
const nsReflowState* aParentRS,
|
|
|
|
|
nsMargin& aResult)
|
|
|
|
|
{
|
|
|
|
|
const nsStyleSpacing* spacing;
|
|
|
|
|
nsresult rv;
|
|
|
|
|
rv = aFrame->GetStyleData(eStyleStruct_Spacing,
|
|
|
|
|
(const nsStyleStruct*&) spacing);
|
|
|
|
|
if (NS_SUCCEEDED(rv) && (nsnull != spacing)) {
|
|
|
|
|
// If style style can provide us the margin directly, then use it.
|
|
|
|
|
#if 0
|
|
|
|
|
if (!spacing->GetMargin(aResult) && (nsnull != aParentRS))
|
|
|
|
|
#else
|
|
|
|
|
spacing->CalcMarginFor(aFrame, aResult);
|
|
|
|
|
if ((eStyleUnit_Percent == spacing->mMargin.GetTopUnit()) ||
|
|
|
|
|
(eStyleUnit_Percent == spacing->mMargin.GetRightUnit()) ||
|
|
|
|
|
(eStyleUnit_Percent == spacing->mMargin.GetBottomUnit()) ||
|
|
|
|
|
(eStyleUnit_Percent == spacing->mMargin.GetLeftUnit()))
|
|
|
|
|
#endif
|
|
|
|
|
{
|
|
|
|
|
// We have to compute the value (because it's uncomputable by
|
|
|
|
|
// the style code).
|
|
|
|
|
const nsHTMLReflowState* rs = GetContainingBlockReflowState(aParentRS);
|
|
|
|
|
if (nsnull != rs) {
|
|
|
|
|
nsStyleCoord left, right;
|
|
|
|
|
nscoord containingBlockWidth = rs->computedWidth;
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mMargin.GetLeftUnit(),
|
|
|
|
|
spacing->mMargin.GetLeft(left), aResult.left);
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mMargin.GetRightUnit(),
|
|
|
|
|
spacing->mMargin.GetRight(right),
|
|
|
|
|
aResult.right);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
aResult.left = 0;
|
|
|
|
|
aResult.right = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const nsHTMLReflowState* rs2 = GetPageBoxReflowState(aParentRS);
|
|
|
|
|
nsStyleCoord top, bottom;
|
|
|
|
|
if (nsnull != rs2) {
|
|
|
|
|
// According to the CSS2 spec, margin percentages are
|
|
|
|
|
// calculated with respect to the *height* of the containing
|
|
|
|
|
// block when in a paginated context.
|
|
|
|
|
ComputeVerticalValue(rs2->computedHeight, spacing->mMargin.GetTopUnit(),
|
|
|
|
|
spacing->mMargin.GetTop(top), aResult.top);
|
|
|
|
|
ComputeVerticalValue(rs2->computedHeight, spacing->mMargin.GetBottomUnit(),
|
|
|
|
|
spacing->mMargin.GetBottom(bottom),
|
|
|
|
|
aResult.bottom);
|
|
|
|
|
}
|
|
|
|
|
else if (nsnull != rs) {
|
|
|
|
|
// According to the CSS2 spec, margin percentages are
|
|
|
|
|
// calculated with respect to the *width* of the containing
|
|
|
|
|
// block, even for margin-top and margin-bottom.
|
|
|
|
|
nscoord containingBlockWidth = rs->computedWidth;
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mMargin.GetTopUnit(),
|
|
|
|
|
spacing->mMargin.GetTop(top), aResult.top);
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mMargin.GetBottomUnit(),
|
|
|
|
|
spacing->mMargin.GetBottom(bottom),
|
|
|
|
|
aResult.bottom);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
aResult.top = 0;
|
|
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|
aResult.bottom = 0;
|
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|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
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|
void
|
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|
|
|
nsHTMLReflowState::ComputePaddingFor(nsIFrame* aFrame,
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|
|
|
const nsReflowState* aParentRS,
|
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|
|
|
nsMargin& aResult)
|
|
|
|
|
{
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|
|
const nsStyleSpacing* spacing;
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|
|
nsresult rv;
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|
rv = aFrame->GetStyleData(eStyleStruct_Spacing,
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|
|
|
(const nsStyleStruct*&) spacing);
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|
if (NS_SUCCEEDED(rv) && (nsnull != spacing)) {
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|
|
// If style can provide us the padding directly, then use it.
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|
|
spacing->CalcPaddingFor(aFrame, aResult);
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#if 0
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|
|
if (!spacing->GetPadding(aResult) && (nsnull != aParentRS))
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|
#else
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|
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spacing->CalcPaddingFor(aFrame, aResult);
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if ((eStyleUnit_Percent == spacing->mPadding.GetTopUnit()) ||
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|
(eStyleUnit_Percent == spacing->mPadding.GetRightUnit()) ||
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(eStyleUnit_Percent == spacing->mPadding.GetBottomUnit()) ||
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|
|
(eStyleUnit_Percent == spacing->mPadding.GetLeftUnit()))
|
|
|
|
|
#endif
|
|
|
|
|
{
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|
|
|
|
// We have to compute the value (because it's uncomputable by
|
|
|
|
|
// the style code).
|
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|
|
|
const nsHTMLReflowState* rs = GetContainingBlockReflowState(aParentRS);
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|
|
|
if (nsnull != rs) {
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|
|
nsStyleCoord left, right, top, bottom;
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|
|
nscoord containingBlockWidth = rs->computedWidth;
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|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetLeftUnit(),
|
|
|
|
|
spacing->mPadding.GetLeft(left), aResult.left);
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|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetRightUnit(),
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|
|
|
spacing->mPadding.GetRight(right),
|
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|
|
|
aResult.right);
|
|
|
|
|
|
|
|
|
|
// According to the CSS2 spec, padding percentages are
|
|
|
|
|
// calculated with respect to the *width* of the containing
|
|
|
|
|
// block, even for padding-top and padding-bottom.
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetTopUnit(),
|
|
|
|
|
spacing->mPadding.GetTop(top), aResult.top);
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetBottomUnit(),
|
|
|
|
|
spacing->mPadding.GetBottom(bottom),
|
|
|
|
|
aResult.bottom);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
aResult.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
aResult.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
nsHTMLReflowState::ComputeBorderFor(nsIFrame* aFrame,
|
|
|
|
|
nsMargin& aResult)
|
|
|
|
|
{
|
|
|
|
|
const nsStyleSpacing* spacing;
|
|
|
|
|
nsresult rv;
|
|
|
|
|
rv = aFrame->GetStyleData(eStyleStruct_Spacing,
|
|
|
|
|
(const nsStyleStruct*&) spacing);
|
|
|
|
|
if (NS_SUCCEEDED(rv) && (nsnull != spacing)) {
|
|
|
|
|
// If style can provide us the border directly, then use it.
|
|
|
|
|
if (!spacing->GetBorder(aResult)) {
|
|
|
|
|
// CSS2 has no percentage borders
|
|
|
|
|
aResult.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
aResult.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
nsHTMLReflowState::ComputeBorderPaddingFor(nsIFrame* aFrame,
|
|
|
|
|
const nsReflowState* aParentRS,
|
|
|
|
|
nsMargin& aResult)
|
|
|
|
|
{
|
|
|
|
|
const nsStyleSpacing* spacing;
|
|
|
|
|
nsresult rv;
|
|
|
|
|
rv = aFrame->GetStyleData(eStyleStruct_Spacing,
|
|
|
|
|
(const nsStyleStruct*&) spacing);
|
|
|
|
|
if (NS_SUCCEEDED(rv) && (nsnull != spacing)) {
|
|
|
|
|
nsMargin b, p;
|
|
|
|
|
|
|
|
|
|
// If style style can provide us the margin directly, then use it.
|
|
|
|
|
if (!spacing->GetBorder(b)) {
|
|
|
|
|
b.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
#if 0
|
|
|
|
|
if (!spacing->GetPadding(p) && (nsnull != aParentRS))
|
|
|
|
|
#else
|
|
|
|
|
spacing->CalcPaddingFor(aFrame, p);
|
|
|
|
|
if ((eStyleUnit_Percent == spacing->mPadding.GetTopUnit()) ||
|
|
|
|
|
(eStyleUnit_Percent == spacing->mPadding.GetRightUnit()) ||
|
|
|
|
|
(eStyleUnit_Percent == spacing->mPadding.GetBottomUnit()) ||
|
|
|
|
|
(eStyleUnit_Percent == spacing->mPadding.GetLeftUnit()))
|
|
|
|
|
#endif
|
|
|
|
|
{
|
|
|
|
|
// We have to compute the value (because it's uncomputable by
|
|
|
|
|
// the style code).
|
|
|
|
|
const nsHTMLReflowState* rs = GetContainingBlockReflowState(aParentRS);
|
|
|
|
|
if (nsnull != rs) {
|
|
|
|
|
nsStyleCoord left, right, top, bottom;
|
|
|
|
|
nscoord containingBlockWidth = rs->computedWidth;
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetLeftUnit(),
|
|
|
|
|
spacing->mPadding.GetLeft(left), p.left);
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetRightUnit(),
|
|
|
|
|
spacing->mPadding.GetRight(right), p.right);
|
|
|
|
|
|
|
|
|
|
// According to the CSS2 spec, padding percentages are
|
|
|
|
|
// calculated with respect to the *width* of the containing
|
|
|
|
|
// block, even for padding-top and padding-bottom.
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetTopUnit(),
|
|
|
|
|
spacing->mPadding.GetTop(top), p.top);
|
|
|
|
|
ComputeHorizontalValue(containingBlockWidth, spacing->mPadding.GetBottomUnit(),
|
|
|
|
|
spacing->mPadding.GetBottom(bottom), p.bottom);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
p.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
aResult.top = b.top + p.top;
|
|
|
|
|
aResult.right = b.right + p.right;
|
|
|
|
|
aResult.bottom = b.bottom + p.bottom;
|
|
|
|
|
aResult.left = b.left + p.left;
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
aResult.SizeTo(0, 0, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
nsFrameReflowState::nsFrameReflowState(nsIPresContext& aPresContext,
|
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
|
const nsHTMLReflowMetrics& aMetrics)
|
|
|
|
|
: nsHTMLReflowState(aReflowState),
|
|
|
|
|
mPresContext(aPresContext)
|
|
|
|
|
{
|
|
|
|
|
// While we skip around the reflow state that our parent gave us so
|
|
|
|
|
// that the parentReflowState is linked properly, we don't want to
|
|
|
|
|
// skip over it's reason.
|
|
|
|
|
reason = aReflowState.reason;
|
|
|
|
|
mNextRCFrame = nsnull;
|
|
|
|
|
|
|
|
|
|
// Initialize max-element-size
|
|
|
|
|
mComputeMaxElementSize = nsnull != aMetrics.maxElementSize;
|
|
|
|
|
mMaxElementSize.width = 0;
|
|
|
|
|
mMaxElementSize.height = 0;
|
|
|
|
|
|
|
|
|
|
// Get style data that we need
|
|
|
|
|
frame->GetStyleData(eStyleStruct_Text,
|
|
|
|
|
(const nsStyleStruct*&) mStyleText);
|
|
|
|
|
frame->GetStyleData(eStyleStruct_Display,
|
|
|
|
|
(const nsStyleStruct*&) mStyleDisplay);
|
|
|
|
|
frame->GetStyleData(eStyleStruct_Spacing,
|
|
|
|
|
(const nsStyleStruct*&) mStyleSpacing);
|
|
|
|
|
|
|
|
|
|
// Calculate our border and padding value
|
|
|
|
|
ComputeBorderPaddingFor(frame, parentReflowState, mBorderPadding);
|
|
|
|
|
|
|
|
|
|
// Set mNoWrap flag
|
|
|
|
|
switch (mStyleText->mWhiteSpace) {
|
|
|
|
|
case NS_STYLE_WHITESPACE_PRE:
|
|
|
|
|
case NS_STYLE_WHITESPACE_NOWRAP:
|
|
|
|
|
mNoWrap = PR_TRUE;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
mNoWrap = PR_FALSE;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Set mDirection value
|
|
|
|
|
mDirection = mStyleDisplay->mDirection;
|
|
|
|
|
|
|
|
|
|
// See if this container frame will act as a root for margin
|
|
|
|
|
// collapsing behavior.
|
|
|
|
|
mIsMarginRoot = PR_FALSE;
|
|
|
|
|
if ((0 != mBorderPadding.top) || (0 != mBorderPadding.bottom)) {
|
|
|
|
|
mIsMarginRoot = PR_TRUE;
|
|
|
|
|
}
|
|
|
|
|
mCarriedOutTopMargin = 0;
|
|
|
|
|
mPrevBottomMargin = 0;
|
|
|
|
|
mCarriedOutMarginFlags = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
nsFrameReflowState::~nsFrameReflowState()
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
nsFrameReflowState::SetupChildReflowState(nsHTMLReflowState& aChildRS)
|
|
|
|
|
{
|
|
|
|
|
// Get reflow reason set correctly. It's possible that a child was
|
|
|
|
|
// created and then it was decided that it could not be reflowed
|
|
|
|
|
// (for example, a block frame that isn't at the start of a
|
|
|
|
|
// line). In this case the reason will be wrong so we need to check
|
|
|
|
|
// the frame state.
|
|
|
|
|
nsReflowReason reason = eReflowReason_Resize;
|
|
|
|
|
nsIFrame* frame = aChildRS.frame;
|
|
|
|
|
nsFrameState state;
|
|
|
|
|
frame->GetFrameState(state);
|
|
|
|
|
if (NS_FRAME_FIRST_REFLOW & state) {
|
|
|
|
|
reason = eReflowReason_Initial;
|
|
|
|
|
}
|
|
|
|
|
else if (mNextRCFrame == frame) {
|
|
|
|
|
reason = eReflowReason_Incremental;
|
|
|
|
|
// Make sure we only incrementally reflow once
|
|
|
|
|
mNextRCFrame = nsnull;/* XXX bad coupling */
|
|
|
|
|
}
|
|
|
|
|
aChildRS.reason = reason;
|
|
|
|
|
}
|
|
|
|
|
|
