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gecko/layout/xul/base/src/nsBox.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Author: Eric D Vaughan <evaughan@netscape.com>
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsBoxLayoutState.h"
#include "nsBox.h"
#include "nsBoxFrame.h"
#include "nsPresContext.h"
#include "nsCOMPtr.h"
#include "nsIContent.h"
#include "nsIPresShell.h"
#include "nsHTMLContainerFrame.h"
#include "nsINameSpaceManager.h"
#include "nsGkAtoms.h"
#include "nsFrameManager.h"
#include "nsIDOMNode.h"
#include "nsIDOMNamedNodeMap.h"
#include "nsIDOMAttr.h"
#include "nsIRenderingContext.h"
#include "nsIDocument.h"
#include "nsIDeviceContext.h"
#include "nsITheme.h"
#include "nsIServiceManager.h"
#include "nsIBoxLayout.h"
#ifdef DEBUG_LAYOUT
PRInt32 gIndent = 0;
#endif
#ifdef DEBUG_LAYOUT
void
nsBoxAddIndents()
{
for(PRInt32 i=0; i < gIndent; i++)
{
printf(" ");
}
}
#endif
#ifdef DEBUG_LAYOUT
void
nsBox::AppendAttribute(const nsAutoString& aAttribute, const nsAutoString& aValue, nsAutoString& aResult)
{
aResult.Append(aAttribute);
aResult.AppendLiteral("='");
aResult.Append(aValue);
aResult.AppendLiteral("' ");
}
void
nsBox::ListBox(nsAutoString& aResult)
{
nsAutoString name;
GetBoxName(name);
char addr[100];
sprintf(addr, "[@%p] ", static_cast<void*>(this));
aResult.AppendASCII(addr);
aResult.Append(name);
aResult.AppendLiteral(" ");
nsIContent* content = GetContent();
// add on all the set attributes
if (content) {
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(content));
nsCOMPtr<nsIDOMNamedNodeMap> namedMap;
node->GetAttributes(getter_AddRefs(namedMap));
PRUint32 length;
namedMap->GetLength(&length);
nsCOMPtr<nsIDOMNode> attribute;
for (PRUint32 i = 0; i < length; ++i)
{
namedMap->Item(i, getter_AddRefs(attribute));
nsCOMPtr<nsIDOMAttr> attr(do_QueryInterface(attribute));
attr->GetName(name);
nsAutoString value;
attr->GetValue(value);
AppendAttribute(name, value, aResult);
}
}
}
NS_IMETHODIMP
nsBox::DumpBox(FILE* aFile)
{
nsAutoString s;
ListBox(s);
fprintf(aFile, "%s", NS_LossyConvertUTF16toASCII(s).get());
return NS_OK;
}
void
nsBox::PropagateDebug(nsBoxLayoutState& aState)
{
// propagate debug information
if (mState & NS_STATE_DEBUG_WAS_SET) {
if (mState & NS_STATE_SET_TO_DEBUG)
SetDebug(aState, PR_TRUE);
else
SetDebug(aState, PR_FALSE);
} else if (mState & NS_STATE_IS_ROOT) {
SetDebug(aState, gDebug);
}
}
#endif
#ifdef DEBUG_LAYOUT
void
nsBox::GetBoxName(nsAutoString& aName)
{
aName.AssignLiteral("Box");
}
#endif
nsresult
nsBox::BeginLayout(nsBoxLayoutState& aState)
{
#ifdef DEBUG_LAYOUT
nsBoxAddIndents();
printf("Layout: ");
DumpBox(stdout);
printf("\n");
gIndent++;
#endif
// mark ourselves as dirty so no child under us
// can post an incremental layout.
// XXXldb Is this still needed?
mState |= NS_FRAME_HAS_DIRTY_CHILDREN;
if (GetStateBits() & NS_FRAME_IS_DIRTY)
{
// If the parent is dirty, all the children are dirty (nsHTMLReflowState
// does this too).
nsIFrame* box;
for (box = GetChildBox(); box; box = box->GetNextBox())
box->AddStateBits(NS_FRAME_IS_DIRTY);
}
#ifdef DEBUG_LAYOUT
PropagateDebug(aState);
#endif
return NS_OK;
}
NS_IMETHODIMP
nsBox::DoLayout(nsBoxLayoutState& aState)
{
return NS_OK;
}
nsresult
nsBox::EndLayout(nsBoxLayoutState& aState)
{
#ifdef DEBUG_LAYOUT
--gIndent;
#endif
return SyncLayout(aState);
}
PRBool nsBox::gGotTheme = PR_FALSE;
nsITheme* nsBox::gTheme = nsnull;
nsBox::nsBox()
{
MOZ_COUNT_CTOR(nsBox);
//mX = 0;
//mY = 0;
if (!gGotTheme) {
gGotTheme = PR_TRUE;
CallGetService("@mozilla.org/chrome/chrome-native-theme;1", &gTheme);
}
}
nsBox::~nsBox()
{
// NOTE: This currently doesn't get called for |nsBoxToBlockAdaptor|
// objects, so don't rely on putting anything here.
MOZ_COUNT_DTOR(nsBox);
}
/* static */ void
nsBox::Shutdown()
{
gGotTheme = PR_FALSE;
NS_IF_RELEASE(gTheme);
}
NS_IMETHODIMP
nsBox::RelayoutChildAtOrdinal(nsBoxLayoutState& aState, nsIBox* aChild)
{
return NS_OK;
}
nsresult
nsIFrame::GetClientRect(nsRect& aClientRect)
{
aClientRect = mRect;
aClientRect.MoveTo(0,0);
nsMargin borderPadding;
GetBorderAndPadding(borderPadding);
aClientRect.Deflate(borderPadding);
if (aClientRect.width < 0)
aClientRect.width = 0;
if (aClientRect.height < 0)
aClientRect.height = 0;
// NS_ASSERTION(aClientRect.width >=0 && aClientRect.height >= 0, "Content Size < 0");
return NS_OK;
}
void
nsBox::SetBounds(nsBoxLayoutState& aState, const nsRect& aRect, PRBool aRemoveOverflowArea)
{
NS_BOX_ASSERTION(this, aRect.width >=0 && aRect.height >= 0, "SetBounds Size < 0");
nsRect rect(mRect);
PRUint32 flags = 0;
GetLayoutFlags(flags);
PRUint32 stateFlags = aState.LayoutFlags();
flags |= stateFlags;
if ((flags & NS_FRAME_NO_MOVE_FRAME) == NS_FRAME_NO_MOVE_FRAME)
SetSize(nsSize(aRect.width, aRect.height));
else
SetRect(aRect);
// Nuke the overflow area. The caller is responsible for restoring
// it if necessary.
if (aRemoveOverflowArea && (GetStateBits() & NS_FRAME_OUTSIDE_CHILDREN)) {
// remove the previously stored overflow area
PresContext()->PropertyTable()->
DeleteProperty(this, nsGkAtoms::overflowAreaProperty);
RemoveStateBits(NS_FRAME_OUTSIDE_CHILDREN);
}
if (!(flags & NS_FRAME_NO_MOVE_VIEW))
{
nsContainerFrame::PositionFrameView(this);
if ((rect.x != aRect.x) || (rect.y != aRect.y))
nsContainerFrame::PositionChildViews(this);
}
/*
// only if the origin changed
if ((rect.x != aRect.x) || (rect.y != aRect.y)) {
if (frame->HasView()) {
nsContainerFrame::PositionFrameView(presContext, frame,
frame->GetView());
} else {
nsContainerFrame::PositionChildViews(presContext, frame);
}
}
*/
}
void
nsBox::GetLayoutFlags(PRUint32& aFlags)
{
aFlags = 0;
}
NS_IMETHODIMP
nsIFrame::GetBorderAndPadding(nsMargin& aBorderAndPadding)
{
aBorderAndPadding.SizeTo(0, 0, 0, 0);
nsresult rv = GetBorder(aBorderAndPadding);
if (NS_FAILED(rv))
return rv;
nsMargin padding;
rv = GetPadding(padding);
if (NS_FAILED(rv))
return rv;
aBorderAndPadding += padding;
return rv;
}
NS_IMETHODIMP
nsBox::GetBorder(nsMargin& aMargin)
{
aMargin.SizeTo(0,0,0,0);
const nsStyleDisplay* disp = GetStyleDisplay();
if (disp->mAppearance && gTheme) {
// Go to the theme for the border.
nsPresContext *context = PresContext();
if (gTheme->ThemeSupportsWidget(context, this, disp->mAppearance)) {
nsIntMargin margin(0, 0, 0, 0);
gTheme->GetWidgetBorder(context->DeviceContext(), this,
disp->mAppearance, &margin);
aMargin.top = context->DevPixelsToAppUnits(margin.top);
aMargin.right = context->DevPixelsToAppUnits(margin.right);
aMargin.bottom = context->DevPixelsToAppUnits(margin.bottom);
aMargin.left = context->DevPixelsToAppUnits(margin.left);
return NS_OK;
}
}
aMargin = GetStyleBorder()->GetActualBorder();
return NS_OK;
}
NS_IMETHODIMP
nsBox::GetPadding(nsMargin& aMargin)
{
const nsStyleDisplay *disp = GetStyleDisplay();
if (disp->mAppearance && gTheme) {
// Go to the theme for the padding.
nsPresContext *context = PresContext();
if (gTheme->ThemeSupportsWidget(context, this, disp->mAppearance)) {
nsIntMargin margin(0, 0, 0, 0);
PRBool useThemePadding;
useThemePadding = gTheme->GetWidgetPadding(context->DeviceContext(),
this, disp->mAppearance,
&margin);
if (useThemePadding) {
aMargin.top = context->DevPixelsToAppUnits(margin.top);
aMargin.right = context->DevPixelsToAppUnits(margin.right);
aMargin.bottom = context->DevPixelsToAppUnits(margin.bottom);
aMargin.left = context->DevPixelsToAppUnits(margin.left);
return NS_OK;
}
}
}
aMargin.SizeTo(0,0,0,0);
GetStylePadding()->GetPadding(aMargin);
return NS_OK;
}
NS_IMETHODIMP
nsBox::GetMargin(nsMargin& aMargin)
{
aMargin.SizeTo(0,0,0,0);
GetStyleMargin()->GetMargin(aMargin);
return NS_OK;
}
void
nsBox::SizeNeedsRecalc(nsSize& aSize)
{
aSize.width = -1;
aSize.height = -1;
}
void
nsBox::CoordNeedsRecalc(PRInt32& aFlex)
{
aFlex = -1;
}
PRBool
nsBox::DoesNeedRecalc(const nsSize& aSize)
{
return (aSize.width == -1 || aSize.height == -1);
}
PRBool
nsBox::DoesNeedRecalc(nscoord aCoord)
{
return (aCoord == -1);
}
PRBool
nsBox::GetWasCollapsed(nsBoxLayoutState& aState)
{
return (GetStateBits() & NS_STATE_IS_COLLAPSED) != 0;
}
void
nsBox::SetWasCollapsed(nsBoxLayoutState& aState, PRBool aCollapsed)
{
if (aCollapsed)
AddStateBits(NS_STATE_IS_COLLAPSED);
else
RemoveStateBits(NS_STATE_IS_COLLAPSED);
}
NS_IMETHODIMP
nsBox::SetLayoutManager(nsIBoxLayout* aLayout)
{
return NS_OK;
}
NS_IMETHODIMP
nsBox::GetLayoutManager(nsIBoxLayout** aLayout)
{
*aLayout = nsnull;
return NS_OK;
}
nsSize
nsBox::GetPrefSize(nsBoxLayoutState& aState)
{
NS_ASSERTION(aState.GetRenderingContext(), "must have rendering context");
nsSize pref(0,0);
DISPLAY_PREF_SIZE(this, pref);
if (IsCollapsed(aState))
return pref;
AddBorderAndPadding(pref);
nsIBox::AddCSSPrefSize(aState, this, pref);
nsSize minSize = GetMinSize(aState);
nsSize maxSize = GetMaxSize(aState);
return BoundsCheck(minSize, pref, maxSize);
}
nsSize
nsBox::GetMinSize(nsBoxLayoutState& aState)
{
NS_ASSERTION(aState.GetRenderingContext(), "must have rendering context");
nsSize min(0,0);
DISPLAY_MIN_SIZE(this, min);
if (IsCollapsed(aState))
return min;
AddBorderAndPadding(min);
nsIBox::AddCSSMinSize(aState, this, min);
return min;
}
nsSize
nsBox::GetMinSizeForScrollArea(nsBoxLayoutState& aBoxLayoutState)
{
return nsSize(0, 0);
}
nsSize
nsBox::GetMaxSize(nsBoxLayoutState& aState)
{
NS_ASSERTION(aState.GetRenderingContext(), "must have rendering context");
nsSize maxSize(NS_INTRINSICSIZE, NS_INTRINSICSIZE);
DISPLAY_MAX_SIZE(this, maxSize);
if (IsCollapsed(aState))
return maxSize;
AddBorderAndPadding(maxSize);
nsIBox::AddCSSMaxSize(aState, this, maxSize);
return maxSize;
}
nscoord
nsBox::GetFlex(nsBoxLayoutState& aState)
{
nscoord flex = 0;
GetDefaultFlex(flex);
nsIBox::AddCSSFlex(aState, this, flex);
return flex;
}
PRUint32
nsIFrame::GetOrdinal(nsBoxLayoutState& aState)
{
PRUint32 ordinal = DEFAULT_ORDINAL_GROUP;
nsIBox::AddCSSOrdinal(aState, this, ordinal);
return ordinal;
}
nscoord
nsBox::GetBoxAscent(nsBoxLayoutState& aState)
{
if (IsCollapsed(aState))
return 0;
return GetPrefSize(aState).height;
}
PRBool
nsBox::IsCollapsed(nsBoxLayoutState& aState)
{
PRBool collapsed = PR_FALSE;
nsIBox::AddCSSCollapsed(aState, this, collapsed);
return collapsed;
}
nsresult
nsIFrame::Layout(nsBoxLayoutState& aState)
{
NS_ASSERTION(aState.GetRenderingContext(), "must have rendering context");
nsBox *box = static_cast<nsBox*>(this);
DISPLAY_LAYOUT(box);
box->BeginLayout(aState);
box->DoLayout(aState);
box->EndLayout(aState);
return NS_OK;
}
PRBool
nsBox::DoesClipChildren()
{
const nsStyleDisplay* display = GetStyleDisplay();
NS_ASSERTION((display->mOverflowY == NS_STYLE_OVERFLOW_CLIP) ==
(display->mOverflowX == NS_STYLE_OVERFLOW_CLIP),
"If one overflow is clip, the other should be too");
return display->mOverflowX == NS_STYLE_OVERFLOW_CLIP;
}
nsresult
nsBox::SyncLayout(nsBoxLayoutState& aState)
{
/*
PRBool collapsed = PR_FALSE;
IsCollapsed(aState, collapsed);
if (collapsed) {
CollapseChild(aState, this, PR_TRUE);
return NS_OK;
}
*/
if (GetStateBits() & NS_FRAME_IS_DIRTY)
Redraw(aState);
RemoveStateBits(NS_FRAME_HAS_DIRTY_CHILDREN | NS_FRAME_IS_DIRTY
| NS_FRAME_FIRST_REFLOW | NS_FRAME_IN_REFLOW);
nsPresContext* presContext = aState.PresContext();
PRUint32 flags = 0;
GetLayoutFlags(flags);
PRUint32 stateFlags = aState.LayoutFlags();
flags |= stateFlags;
nsRect rect(nsPoint(0, 0), GetSize());
if (ComputesOwnOverflowArea()) {
rect = GetOverflowRect();
}
else {
if (!DoesClipChildren()) {
// See if our child frames caused us to overflow after being laid
// out. If so, store the overflow area. This normally can't happen
// in XUL, but it can happen with the CSS 'outline' property and
// possibly with other exotic stuff (e.g. relatively positioned
// frames in HTML inside XUL).
nsIFrame* box = GetChildBox();
while (box) {
nsRect bounds = box->GetOverflowRect() + box->GetPosition();
rect.UnionRect(rect, bounds);
box = box->GetNextBox();
}
}
FinishAndStoreOverflow(&rect, GetSize());
}
nsIView* view = GetView();
if (view) {
// Make sure the frame's view is properly sized and positioned and has
// things like opacity correct
nsHTMLContainerFrame::SyncFrameViewAfterReflow(
presContext,
this,
view,
&rect,
flags);
}
return NS_OK;
}
nsresult
nsIFrame::Redraw(nsBoxLayoutState& aState,
const nsRect* aDamageRect,
PRBool aImmediate)
{
if (aState.PaintingDisabled())
return NS_OK;
nsRect damageRect(0,0,0,0);
if (aDamageRect)
damageRect = *aDamageRect;
else
damageRect = GetOverflowRect();
InvalidateWithFlags(damageRect, aImmediate ? INVALIDATE_IMMEDIATE : 0);
return NS_OK;
}
PRBool
nsIBox::AddCSSPrefSize(nsBoxLayoutState& aState, nsIBox* aBox, nsSize& aSize)
{
PRBool widthSet = PR_FALSE, heightSet = PR_FALSE;
// add in the css min, max, pref
const nsStylePosition* position = aBox->GetStylePosition();
// see if the width or height was specifically set
// XXX Handle eStyleUnit_Enumerated?
// (Handling the eStyleUnit_Enumerated types requires
// GetPrefSize/GetMinSize methods that don't consider
// (min-/max-/)(width/height) properties.)
if (position->mWidth.GetUnit() == eStyleUnit_Coord) {
aSize.width = position->mWidth.GetCoordValue();
widthSet = PR_TRUE;
}
if (position->mHeight.GetUnit() == eStyleUnit_Coord) {
aSize.height = position->mHeight.GetCoordValue();
heightSet = PR_TRUE;
}
nsIContent* content = aBox->GetContent();
// ignore 'height' and 'width' attributes if the actual element is not XUL
// For example, we might be magic XUL frames whose primary content is an HTML
// <select>
if (content && content->IsNodeOfType(nsINode::eXUL)) {
nsAutoString value;
PRInt32 error;
content->GetAttr(kNameSpaceID_None, nsGkAtoms::width, value);
if (!value.IsEmpty()) {
value.Trim("%");
aSize.width =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
widthSet = PR_TRUE;
}
content->GetAttr(kNameSpaceID_None, nsGkAtoms::height, value);
if (!value.IsEmpty()) {
value.Trim("%");
aSize.height =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
heightSet = PR_TRUE;
}
}
return (widthSet && heightSet);
}
PRBool
nsIBox::AddCSSMinSize(nsBoxLayoutState& aState, nsIBox* aBox, nsSize& aSize)
{
PRBool widthSet = PR_FALSE;
PRBool heightSet = PR_FALSE;
PRBool canOverride = PR_TRUE;
// See if a native theme wants to supply a minimum size.
const nsStyleDisplay* display = aBox->GetStyleDisplay();
if (display->mAppearance) {
nsITheme *theme = aState.PresContext()->GetTheme();
if (theme && theme->ThemeSupportsWidget(aState.PresContext(), aBox, display->mAppearance)) {
nsIntSize size;
nsIRenderingContext* rendContext = aState.GetRenderingContext();
if (rendContext) {
theme->GetMinimumWidgetSize(rendContext, aBox,
display->mAppearance, &size, &canOverride);
if (size.width) {
aSize.width = aState.PresContext()->DevPixelsToAppUnits(size.width);
widthSet = PR_TRUE;
}
if (size.height) {
aSize.height = aState.PresContext()->DevPixelsToAppUnits(size.height);
heightSet = PR_TRUE;
}
}
}
}
// add in the css min, max, pref
const nsStylePosition* position = aBox->GetStylePosition();
// same for min size. Unfortunately min size is always set to 0. So for now
// we will assume 0 means not set.
if (position->mMinWidth.GetUnit() == eStyleUnit_Coord) {
nscoord min = position->mMinWidth.GetCoordValue();
if (min && (!widthSet || (min > aSize.width && canOverride))) {
aSize.width = min;
widthSet = PR_TRUE;
}
} else if (position->mMinWidth.GetUnit() == eStyleUnit_Percent) {
NS_ASSERTION(position->mMinWidth.GetPercentValue() == 0.0f,
"Non-zero percentage values not currently supported");
aSize.width = 0;
widthSet = PR_TRUE;
}
// XXX Handle eStyleUnit_Enumerated?
// (Handling the eStyleUnit_Enumerated types requires
// GetPrefSize/GetMinSize methods that don't consider
// (min-/max-/)(width/height) properties.
if (position->mMinHeight.GetUnit() == eStyleUnit_Coord) {
nscoord min = position->mMinHeight.GetCoordValue();
if (min && (!heightSet || (min > aSize.height && canOverride))) {
aSize.height = min;
heightSet = PR_TRUE;
}
} else if (position->mMinHeight.GetUnit() == eStyleUnit_Percent) {
NS_ASSERTION(position->mMinHeight.GetPercentValue() == 0.0f,
"Non-zero percentage values not currently supported");
aSize.height = 0;
heightSet = PR_TRUE;
}
nsIContent* content = aBox->GetContent();
if (content) {
nsAutoString value;
PRInt32 error;
content->GetAttr(kNameSpaceID_None, nsGkAtoms::minwidth, value);
if (!value.IsEmpty())
{
value.Trim("%");
nscoord val =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
if (val > aSize.width)
aSize.width = val;
widthSet = PR_TRUE;
}
content->GetAttr(kNameSpaceID_None, nsGkAtoms::minheight, value);
if (!value.IsEmpty())
{
value.Trim("%");
nscoord val =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
if (val > aSize.height)
aSize.height = val;
heightSet = PR_TRUE;
}
}
return (widthSet && heightSet);
}
PRBool
nsIBox::AddCSSMaxSize(nsBoxLayoutState& aState, nsIBox* aBox, nsSize& aSize)
{
PRBool widthSet = PR_FALSE, heightSet = PR_FALSE;
// add in the css min, max, pref
const nsStylePosition* position = aBox->GetStylePosition();
// and max
// see if the width or height was specifically set
// XXX Handle eStyleUnit_Enumerated?
// (Handling the eStyleUnit_Enumerated types requires
// GetPrefSize/GetMinSize methods that don't consider
// (min-/max-/)(width/height) properties.)
if (position->mMaxWidth.GetUnit() == eStyleUnit_Coord) {
aSize.width = position->mMaxWidth.GetCoordValue();
widthSet = PR_TRUE;
}
if (position->mMaxHeight.GetUnit() == eStyleUnit_Coord) {
aSize.height = position->mMaxHeight.GetCoordValue();
heightSet = PR_TRUE;
}
nsIContent* content = aBox->GetContent();
if (content) {
nsAutoString value;
PRInt32 error;
content->GetAttr(kNameSpaceID_None, nsGkAtoms::maxwidth, value);
if (!value.IsEmpty()) {
value.Trim("%");
nscoord val =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
aSize.width = val;
widthSet = PR_TRUE;
}
content->GetAttr(kNameSpaceID_None, nsGkAtoms::maxheight, value);
if (!value.IsEmpty()) {
value.Trim("%");
nscoord val =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
aSize.height = val;
heightSet = PR_TRUE;
}
}
return (widthSet || heightSet);
}
PRBool
nsIBox::AddCSSFlex(nsBoxLayoutState& aState, nsIBox* aBox, nscoord& aFlex)
{
PRBool flexSet = PR_FALSE;
// get the flexibility
nsIContent* content = aBox->GetContent();
if (content) {
PRInt32 error;
nsAutoString value;
content->GetAttr(kNameSpaceID_None, nsGkAtoms::flex, value);
if (!value.IsEmpty()) {
value.Trim("%");
aFlex = value.ToInteger(&error);
flexSet = PR_TRUE;
}
else {
// No attribute value. Check CSS.
const nsStyleXUL* boxInfo = aBox->GetStyleXUL();
if (boxInfo->mBoxFlex > 0.0f) {
// The flex was defined in CSS.
aFlex = (nscoord)boxInfo->mBoxFlex;
flexSet = PR_TRUE;
}
}
}
if (aFlex < 0)
aFlex = 0;
if (aFlex >= nscoord_MAX)
aFlex = nscoord_MAX - 1;
return flexSet;
}
PRBool
nsIBox::AddCSSCollapsed(nsBoxLayoutState& aState, nsIBox* aBox, PRBool& aCollapsed)
{
aCollapsed = aBox->GetStyleVisibility()->mVisible ==
NS_STYLE_VISIBILITY_COLLAPSE;
return PR_TRUE;
}
PRBool
nsIBox::AddCSSOrdinal(nsBoxLayoutState& aState, nsIBox* aBox, PRUint32& aOrdinal)
{
PRBool ordinalSet = PR_FALSE;
// get the flexibility
nsIContent* content = aBox->GetContent();
if (content) {
PRInt32 error;
nsAutoString value;
content->GetAttr(kNameSpaceID_None, nsGkAtoms::ordinal, value);
if (!value.IsEmpty()) {
aOrdinal = value.ToInteger(&error);
ordinalSet = PR_TRUE;
}
else {
// No attribute value. Check CSS.
const nsStyleXUL* boxInfo = aBox->GetStyleXUL();
if (boxInfo->mBoxOrdinal > 1) {
// The ordinal group was defined in CSS.
aOrdinal = (nscoord)boxInfo->mBoxOrdinal;
ordinalSet = PR_TRUE;
}
}
}
return ordinalSet;
}
void
nsBox::AddBorderAndPadding(nsSize& aSize)
{
AddBorderAndPadding(this, aSize);
}
void
nsBox::AddMargin(nsSize& aSize)
{
AddMargin(this, aSize);
}
void
nsBox::AddBorderAndPadding(nsIBox* aBox, nsSize& aSize)
{
nsMargin borderPadding(0,0,0,0);
aBox->GetBorderAndPadding(borderPadding);
AddMargin(aSize, borderPadding);
}
void
nsBox::AddMargin(nsIBox* aChild, nsSize& aSize)
{
nsMargin margin(0,0,0,0);
aChild->GetMargin(margin);
AddMargin(aSize, margin);
}
void
nsBox::AddMargin(nsSize& aSize, const nsMargin& aMargin)
{
if (aSize.width != NS_INTRINSICSIZE)
aSize.width += aMargin.left + aMargin.right;
if (aSize.height != NS_INTRINSICSIZE)
aSize.height += aMargin.top + aMargin.bottom;
}
nscoord
nsBox::BoundsCheck(nscoord aMin, nscoord aPref, nscoord aMax)
{
if (aPref > aMax)
aPref = aMax;
if (aPref < aMin)
aPref = aMin;
return aPref;
}
nsSize
nsBox::BoundsCheckMinMax(const nsSize& aMinSize, const nsSize& aMaxSize)
{
return nsSize(PR_MAX(aMaxSize.width, aMinSize.width),
PR_MAX(aMaxSize.height, aMinSize.height));
}
nsSize
nsBox::BoundsCheck(const nsSize& aMinSize, const nsSize& aPrefSize, const nsSize& aMaxSize)
{
return nsSize(BoundsCheck(aMinSize.width, aPrefSize.width, aMaxSize.width),
BoundsCheck(aMinSize.height, aPrefSize.height, aMaxSize.height));
}
#ifdef DEBUG_LAYOUT
nsresult
nsBox::SetDebug(nsBoxLayoutState& aState, PRBool aDebug)
{
return NS_OK;
}
NS_IMETHODIMP
nsBox::GetDebugBoxAt( const nsPoint& aPoint,
nsIBox** aBox)
{
nsRect thisRect(nsPoint(0,0), GetSize());
if (!thisRect.Contains(aPoint))
return NS_ERROR_FAILURE;
nsIBox* child = GetChildBox();
nsIBox* hit = nsnull;
*aBox = nsnull;
while (nsnull != child) {
nsresult rv = child->GetDebugBoxAt(aPoint - child->GetOffsetTo(this), &hit);
if (NS_SUCCEEDED(rv) && hit) {
*aBox = hit;
}
child = child->GetNextBox();
}
// found a child
if (*aBox) {
return NS_OK;
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsBox::GetDebug(PRBool& aDebug)
{
aDebug = PR_FALSE;
return NS_OK;
}
#endif
PRBool
nsBox::GetMouseThrough() const
{
if (mParent && mParent->IsBoxFrame())
return mParent->GetMouseThrough();
return PR_FALSE;
}
PRBool
nsBox::GetDefaultFlex(PRInt32& aFlex)
{
aFlex = 0;
return PR_TRUE;
}
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