wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity
d613ab3419
gecko/layout/style/nsStyleStruct.h
Robert O'Callahan 13041e1a84 Bug 772726. Part 13: Fix handling of transforms in gfxTextObjectPaint. r=eflores,jwatt 
gfxTextObjectPaint::GetFillPattern/GetStrokePattern should take the destination's CTM
as a parameter in order to set up the pattern matrix correctly, since the pattern matrix
is combined with the CTM by cairo/Thebes --- but we want the pattern rendering to be
independendt of the CTM, instead depending only on the TM set up when we initialized
the gfxTextObjectPaint.
We make SVGTextObjectPaint store matrices that map device space to pattern space.
2012-09-12 17:13:12 +12:00

2288 lines
75 KiB
C++
Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* structs that contain the data provided by nsStyleContext, the
* internal API for computed style data for an element
*/
#ifndef nsStyleStruct_h___
#define nsStyleStruct_h___
#include "mozilla/Attributes.h"
#include "nsColor.h"
#include "nsCoord.h"
#include "nsMargin.h"
#include "nsRect.h"
#include "nsFont.h"
#include "nsStyleCoord.h"
#include "nsStyleConsts.h"
#include "nsChangeHint.h"
#include "nsPresContext.h"
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsTArray.h"
#include "nsIAtom.h"
#include "nsIURI.h"
#include "nsCSSValue.h"
#include "nsStyleTransformMatrix.h"
#include "nsAlgorithm.h"
#include "imgIRequest.h"
#include "gfxRect.h"
class nsIFrame;
class imgIRequest;
class imgIContainer;
struct nsCSSValueList;
// Includes nsStyleStructID.
#include "nsStyleStructFwd.h"
// Bits for each struct.
// NS_STYLE_INHERIT_BIT defined in nsStyleStructFwd.h
#define NS_STYLE_INHERIT_MASK 0x007fffff
// Additional bits for nsStyleContext's mBits:
// See nsStyleContext::HasTextDecorationLines
#define NS_STYLE_HAS_TEXT_DECORATION_LINES 0x00800000
// See nsStyleContext::HasPseudoElementData.
#define NS_STYLE_HAS_PSEUDO_ELEMENT_DATA 0x01000000
// See nsStyleContext::RelevantLinkIsVisited
#define NS_STYLE_RELEVANT_LINK_VISITED 0x02000000
// See nsStyleContext::IsStyleIfVisited
#define NS_STYLE_IS_STYLE_IF_VISITED 0x04000000
// See nsStyleContext::GetPseudoEnum
#define NS_STYLE_CONTEXT_TYPE_MASK 0xf8000000
#define NS_STYLE_CONTEXT_TYPE_SHIFT 27
// Additional bits for nsRuleNode's mDependentBits:
#define NS_RULE_NODE_GC_MARK 0x02000000
#define NS_RULE_NODE_IS_IMPORTANT 0x08000000
#define NS_RULE_NODE_LEVEL_MASK 0xf0000000
#define NS_RULE_NODE_LEVEL_SHIFT 28
// The lifetime of these objects is managed by the presshell's arena.
struct nsStyleFont {
nsStyleFont(const nsFont& aFont, nsPresContext *aPresContext);
nsStyleFont(const nsStyleFont& aStyleFont);
nsStyleFont(nsPresContext *aPresContext);
private:
void Init(nsPresContext *aPresContext);
public:
~nsStyleFont(void) {
MOZ_COUNT_DTOR(nsStyleFont);
}
nsChangeHint CalcDifference(const nsStyleFont& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_REFLOW;
}
static nsChangeHint CalcFontDifference(const nsFont& aFont1, const nsFont& aFont2);
static nscoord ZoomText(nsPresContext* aPresContext, nscoord aSize);
static nscoord UnZoomText(nsPresContext* aPresContext, nscoord aSize);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW;
void Destroy(nsPresContext* aContext);
nsFont mFont; // [inherited]
nscoord mSize; // [inherited] Our "computed size". Can be different
// from mFont.size which is our "actual size" and is
// enforced to be >= the user's preferred min-size.
// mFont.size should be used for display purposes
// while mSize is the value to return in
// getComputedStyle() for example.
uint8_t mGenericID; // [inherited] generic CSS font family, if any;
// value is a kGenericFont_* constant, see nsFont.h.
// MathML scriptlevel support
int8_t mScriptLevel; // [inherited]
// was mLanguage set based on a lang attribute in the document?
bool mExplicitLanguage; // [inherited]
// The value mSize would have had if scriptminsize had never been applied
nscoord mScriptUnconstrainedSize;
nscoord mScriptMinSize; // [inherited] length
float mScriptSizeMultiplier; // [inherited]
nsCOMPtr<nsIAtom> mLanguage; // [inherited]
};
struct nsStyleGradientStop {
nsStyleCoord mLocation; // percent, coord, none
nscolor mColor;
};
class nsStyleGradient {
public:
nsStyleGradient();
uint8_t mShape; // NS_STYLE_GRADIENT_SHAPE_*
uint8_t mSize; // NS_STYLE_GRADIENT_SIZE_*;
// not used (must be FARTHEST_CORNER) for linear shape
bool mRepeating;
bool mLegacySyntax;
nsStyleCoord mBgPosX; // percent, coord, calc, none
nsStyleCoord mBgPosY; // percent, coord, calc, none
nsStyleCoord mAngle; // none, angle
nsStyleCoord mRadiusX; // percent, coord, calc, none
nsStyleCoord mRadiusY; // percent, coord, calc, none
// stops are in the order specified in the stylesheet
nsTArray<nsStyleGradientStop> mStops;
bool operator==(const nsStyleGradient& aOther) const;
bool operator!=(const nsStyleGradient& aOther) const {
return !(*this == aOther);
}
bool IsOpaque();
bool HasCalc();
uint32_t Hash(PLDHashNumber aHash);
NS_INLINE_DECL_REFCOUNTING(nsStyleGradient)
private:
~nsStyleGradient() {}
nsStyleGradient(const nsStyleGradient& aOther) MOZ_DELETE;
nsStyleGradient& operator=(const nsStyleGradient& aOther) MOZ_DELETE;
};
enum nsStyleImageType {
eStyleImageType_Null,
eStyleImageType_Image,
eStyleImageType_Gradient,
eStyleImageType_Element
};
/**
* Represents a paintable image of one of the following types.
* (1) A real image loaded from an external source.
* (2) A CSS linear or radial gradient.
* (3) An element within a document, or an <img>, <video>, or <canvas> element
* not in a document.
* (*) Optionally a crop rect can be set to paint a partial (rectangular)
* region of an image. (Currently, this feature is only supported with an
* image of type (1)).
*
* This struct is currently used only for 'background-image', but it may be
* used by other CSS properties such as 'border-image', 'list-style-image', and
* 'content' in the future (bug 507052).
*/
struct nsStyleImage {
nsStyleImage();
~nsStyleImage();
nsStyleImage(const nsStyleImage& aOther);
nsStyleImage& operator=(const nsStyleImage& aOther);
void SetNull();
void SetImageData(imgIRequest* aImage);
void TrackImage(nsPresContext* aContext);
void UntrackImage(nsPresContext* aContext);
void SetGradientData(nsStyleGradient* aGradient);
void SetElementId(const PRUnichar* aElementId);
void SetCropRect(nsStyleSides* aCropRect);
nsStyleImageType GetType() const {
return mType;
}
imgIRequest* GetImageData() const {
NS_ABORT_IF_FALSE(mType == eStyleImageType_Image, "Data is not an image!");
NS_ABORT_IF_FALSE(mImageTracked,
"Should be tracking any image we're going to use!");
return mImage;
}
nsStyleGradient* GetGradientData() const {
NS_ASSERTION(mType == eStyleImageType_Gradient, "Data is not a gradient!");
return mGradient;
}
const PRUnichar* GetElementId() const {
NS_ASSERTION(mType == eStyleImageType_Element, "Data is not an element!");
return mElementId;
}
nsStyleSides* GetCropRect() const {
NS_ASSERTION(mType == eStyleImageType_Image,
"Only image data can have a crop rect");
return mCropRect;
}
/**
* Compute the actual crop rect in pixels, using the source image bounds.
* The computation involves converting percentage unit to pixel unit and
* clamping each side value to fit in the source image bounds.
* @param aActualCropRect the computed actual crop rect.
* @param aIsEntireImage true iff |aActualCropRect| is identical to the
* source image bounds.
* @return true iff |aActualCropRect| holds a meaningful value.
*/
bool ComputeActualCropRect(nsIntRect& aActualCropRect,
bool* aIsEntireImage = nullptr) const;
/**
* Requests a decode on the image.
*/
nsresult RequestDecode() const;
/**
* @return true if the item is definitely opaque --- i.e., paints every
* pixel within its bounds opaquely, and the bounds contains at least a pixel.
*/
bool IsOpaque() const;
/**
* @return true if this image is fully loaded, and its size is calculated;
* always returns true if |mType| is |eStyleImageType_Gradient| or
* |eStyleImageType_Element|.
*/
bool IsComplete() const;
/**
* @return true if it is 100% confident that this image contains no pixel
* to draw.
*/
bool IsEmpty() const {
// There are some other cases when the image will be empty, for example
// when the crop rect is empty. However, checking the emptiness of crop
// rect is non-trivial since each side value can be specified with
// percentage unit, which can not be evaluated until the source image size
// is available. Therefore, we currently postpone the evaluation of crop
// rect until the actual rendering time --- alternatively until GetOpaqueRegion()
// is called.
return mType == eStyleImageType_Null;
}
bool operator==(const nsStyleImage& aOther) const;
bool operator!=(const nsStyleImage& aOther) const {
return !(*this == aOther);
}
private:
void DoCopy(const nsStyleImage& aOther);
nsStyleImageType mType;
union {
imgIRequest* mImage;
nsStyleGradient* mGradient;
PRUnichar* mElementId;
};
// This is _currently_ used only in conjunction with eStyleImageType_Image.
nsAutoPtr<nsStyleSides> mCropRect;
#ifdef DEBUG
bool mImageTracked;
#endif
};
struct nsStyleColor {
nsStyleColor(nsPresContext* aPresContext);
nsStyleColor(const nsStyleColor& aOther);
~nsStyleColor(void) {
MOZ_COUNT_DTOR(nsStyleColor);
}
nsChangeHint CalcDifference(const nsStyleColor& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_VISUAL;
}
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleColor();
aContext->FreeToShell(sizeof(nsStyleColor), this);
}
// Don't add ANY members to this struct! We can achieve caching in the rule
// tree (rather than the style tree) by letting color stay by itself! -dwh
nscolor mColor; // [inherited]
};
struct nsStyleBackground {
nsStyleBackground();
nsStyleBackground(const nsStyleBackground& aOther);
~nsStyleBackground();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext);
nsChangeHint CalcDifference(const nsStyleBackground& aOther) const;
static nsChangeHint MaxDifference() {
return NS_CombineHint(nsChangeHint_UpdateEffects, NS_STYLE_HINT_VISUAL);
}
struct Position;
friend struct Position;
struct Position {
typedef nsStyleCoord::Calc PositionCoord;
PositionCoord mXPosition, mYPosition;
// Initialize nothing
Position() {}
// Initialize to initial values
void SetInitialValues();
// True if the effective background image position described by this depends
// on the size of the corresponding frame.
bool DependsOnFrameSize() const {
return mXPosition.mPercent != 0.0f || mYPosition.mPercent != 0.0f;
}
bool operator==(const Position& aOther) const {
return mXPosition == aOther.mXPosition &&
mYPosition == aOther.mYPosition;
}
bool operator!=(const Position& aOther) const {
return !(*this == aOther);
}
};
struct Size;
friend struct Size;
struct Size {
struct Dimension : public nsStyleCoord::Calc {
nscoord ResolveLengthPercentage(nscoord aAvailable) const {
double d = double(mPercent) * double(aAvailable) + double(mLength);
if (d < 0.0)
return 0;
return NSToCoordRoundWithClamp(float(d));
}
};
Dimension mWidth, mHeight;
nscoord ResolveWidthLengthPercentage(const nsSize& aBgPositioningArea) const {
NS_ABORT_IF_FALSE(mWidthType == eLengthPercentage,
"resolving non-length/percent dimension!");
return mWidth.ResolveLengthPercentage(aBgPositioningArea.width);
}
nscoord ResolveHeightLengthPercentage(const nsSize& aBgPositioningArea) const {
NS_ABORT_IF_FALSE(mHeightType == eLengthPercentage,
"resolving non-length/percent dimension!");
return mHeight.ResolveLengthPercentage(aBgPositioningArea.height);
}
// Except for eLengthPercentage, Dimension types which might change
// how a layer is painted when the corresponding frame's dimensions
// change *must* precede all dimension types which are agnostic to
// frame size; see DependsOnFrameSize.
enum DimensionType {
// If one of mWidth and mHeight is eContain or eCover, then both are.
// Also, these two values must equal the corresponding values in
// kBackgroundSizeKTable.
eContain, eCover,
eAuto,
eLengthPercentage,
eDimensionType_COUNT
};
uint8_t mWidthType, mHeightType;
// True if the effective image size described by this depends on the size of
// the corresponding frame, when aImage (which must not have null type) is
// the background image.
bool DependsOnFrameSize(const nsStyleImage& aImage) const;
// Initialize nothing
Size() {}
// Initialize to initial values
void SetInitialValues();
bool operator==(const Size& aOther) const;
bool operator!=(const Size& aOther) const {
return !(*this == aOther);
}
};
struct Repeat;
friend struct Repeat;
struct Repeat {
uint8_t mXRepeat, mYRepeat;
// Initialize nothing
Repeat() {}
// Initialize to initial values
void SetInitialValues();
bool operator==(const Repeat& aOther) const {
return mXRepeat == aOther.mXRepeat &&
mYRepeat == aOther.mYRepeat;
}
bool operator!=(const Repeat& aOther) const {
return !(*this == aOther);
}
};
struct Layer;
friend struct Layer;
struct Layer {
uint8_t mAttachment; // [reset] See nsStyleConsts.h
uint8_t mClip; // [reset] See nsStyleConsts.h
uint8_t mOrigin; // [reset] See nsStyleConsts.h
Repeat mRepeat; // [reset] See nsStyleConsts.h
Position mPosition; // [reset]
nsStyleImage mImage; // [reset]
Size mSize; // [reset]
// Initializes only mImage
Layer();
~Layer();
// Register/unregister images with the document. We do this only
// after the dust has settled in ComputeBackgroundData.
void TrackImages(nsPresContext* aContext) {
if (mImage.GetType() == eStyleImageType_Image)
mImage.TrackImage(aContext);
}
void UntrackImages(nsPresContext* aContext) {
if (mImage.GetType() == eStyleImageType_Image)
mImage.UntrackImage(aContext);
}
void SetInitialValues();
// True if the rendering of this layer might change when the size
// of the corresponding frame changes. This is true for any
// non-solid-color background whose position or size depends on
// the frame size. It's also true for SVG images whose root <svg>
// node has a viewBox.
bool RenderingMightDependOnFrameSize() const;
// An equality operator that compares the images using URL-equality
// rather than pointer-equality.
bool operator==(const Layer& aOther) const;
bool operator!=(const Layer& aOther) const {
return !(*this == aOther);
}
};
// The (positive) number of computed values of each property, since
// the lengths of the lists are independent.
uint32_t mAttachmentCount,
mClipCount,
mOriginCount,
mRepeatCount,
mPositionCount,
mImageCount,
mSizeCount;
// Layers are stored in an array, matching the top-to-bottom order in
// which they are specified in CSS. The number of layers to be used
// should come from the background-image property. We create
// additional |Layer| objects for *any* property, not just
// background-image. This means that the bottommost layer that
// callers in layout care about (which is also the one whose
// background-clip applies to the background-color) may not be last
// layer. In layers below the bottom layer, properties will be
// uninitialized unless their count, above, indicates that they are
// present.
nsAutoTArray<Layer, 1> mLayers;
const Layer& BottomLayer() const { return mLayers[mImageCount - 1]; }
#define NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT(var_, stylebg_) \
for (uint32_t var_ = (stylebg_) ? (stylebg_)->mImageCount : 1; var_-- != 0; )
#define NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT_WITH_RANGE(var_, stylebg_, start_, count_) \
NS_ASSERTION((start_) >= 0 && (uint32_t)(start_) < ((stylebg_) ? (stylebg_)->mImageCount : 1), "Invalid layer start!"); \
NS_ASSERTION((count_) > 0 && (count_) <= (start_) + 1, "Invalid layer range!"); \
for (uint32_t var_ = (start_) + 1; var_-- != (uint32_t)((start_) + 1 - (count_)); )
nscolor mBackgroundColor; // [reset]
// FIXME: This (now background-break in css3-background) should
// probably move into a different struct so that everything in
// nsStyleBackground is set by the background shorthand.
uint8_t mBackgroundInlinePolicy; // [reset] See nsStyleConsts.h
// True if this background is completely transparent.
bool IsTransparent() const;
// We have to take slower codepaths for fixed background attachment,
// but we don't want to do that when there's no image.
// Not inline because it uses an nsCOMPtr<imgIRequest>
// FIXME: Should be in nsStyleStructInlines.h.
bool HasFixedBackground() const;
};
// See https://bugzilla.mozilla.org/show_bug.cgi?id=271586#c43 for why
// this is hard to replace with 'currentColor'.
#define BORDER_COLOR_FOREGROUND 0x20
#define OUTLINE_COLOR_INITIAL 0x80
// FOREGROUND | INITIAL(OUTLINE)
#define BORDER_COLOR_SPECIAL 0xA0
#define BORDER_STYLE_MASK 0x1F
#define NS_SPACING_MARGIN 0
#define NS_SPACING_PADDING 1
#define NS_SPACING_BORDER 2
struct nsStyleMargin {
nsStyleMargin(void);
nsStyleMargin(const nsStyleMargin& aMargin);
~nsStyleMargin(void) {
MOZ_COUNT_DTOR(nsStyleMargin);
}
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW;
void Destroy(nsPresContext* aContext);
void RecalcData();
nsChangeHint CalcDifference(const nsStyleMargin& aOther) const;
static nsChangeHint MaxDifference() {
return NS_SubtractHint(NS_STYLE_HINT_REFLOW,
NS_CombineHint(nsChangeHint_ClearDescendantIntrinsics,
nsChangeHint_NeedDirtyReflow));
}
nsStyleSides mMargin; // [reset] coord, percent, calc, auto
bool IsWidthDependent() const { return !mHasCachedMargin; }
bool GetMargin(nsMargin& aMargin) const
{
if (mHasCachedMargin) {
aMargin = mCachedMargin;
return true;
}
return false;
}
protected:
bool mHasCachedMargin;
nsMargin mCachedMargin;
};
struct nsStylePadding {
nsStylePadding(void);
nsStylePadding(const nsStylePadding& aPadding);
~nsStylePadding(void) {
MOZ_COUNT_DTOR(nsStylePadding);
}
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW;
void Destroy(nsPresContext* aContext);
void RecalcData();
nsChangeHint CalcDifference(const nsStylePadding& aOther) const;
static nsChangeHint MaxDifference() {
return NS_SubtractHint(NS_STYLE_HINT_REFLOW,
nsChangeHint_ClearDescendantIntrinsics);
}
nsStyleSides mPadding; // [reset] coord, percent, calc
bool IsWidthDependent() const { return !mHasCachedPadding; }
bool GetPadding(nsMargin& aPadding) const
{
if (mHasCachedPadding) {
aPadding = mCachedPadding;
return true;
}
return false;
}
protected:
bool mHasCachedPadding;
nsMargin mCachedPadding;
};
struct nsBorderColors {
nsBorderColors* mNext;
nscolor mColor;
nsBorderColors() : mNext(nullptr), mColor(NS_RGB(0,0,0)) {}
nsBorderColors(const nscolor& aColor) : mNext(nullptr), mColor(aColor) {}
~nsBorderColors();
nsBorderColors* Clone() const { return Clone(true); }
static bool Equal(const nsBorderColors* c1,
const nsBorderColors* c2) {
if (c1 == c2)
return true;
while (c1 && c2) {
if (c1->mColor != c2->mColor)
return false;
c1 = c1->mNext;
c2 = c2->mNext;
}
// both should be NULL if these are equal, otherwise one
// has more colors than another
return !c1 && !c2;
}
private:
nsBorderColors* Clone(bool aDeep) const;
};
struct nsCSSShadowItem {
nscoord mXOffset;
nscoord mYOffset;
nscoord mRadius;
nscoord mSpread;
nscolor mColor;
bool mHasColor; // Whether mColor should be used
bool mInset;
nsCSSShadowItem() : mHasColor(false) {
MOZ_COUNT_CTOR(nsCSSShadowItem);
}
~nsCSSShadowItem() {
MOZ_COUNT_DTOR(nsCSSShadowItem);
}
bool operator==(const nsCSSShadowItem& aOther) {
return (mXOffset == aOther.mXOffset &&
mYOffset == aOther.mYOffset &&
mRadius == aOther.mRadius &&
mHasColor == aOther.mHasColor &&
mSpread == aOther.mSpread &&
mInset == aOther.mInset &&
(!mHasColor || mColor == aOther.mColor));
}
bool operator!=(const nsCSSShadowItem& aOther) {
return !(*this == aOther);
}
};
class nsCSSShadowArray {
public:
void* operator new(size_t aBaseSize, uint32_t aArrayLen) {
// We can allocate both this nsCSSShadowArray and the
// actual array in one allocation. The amount of memory to
// allocate is equal to the class's size + the number of bytes for all
// but the first array item (because aBaseSize includes one
// item, see the private declarations)
return ::operator new(aBaseSize +
(aArrayLen - 1) * sizeof(nsCSSShadowItem));
}
nsCSSShadowArray(uint32_t aArrayLen) :
mLength(aArrayLen)
{
MOZ_COUNT_CTOR(nsCSSShadowArray);
for (uint32_t i = 1; i < mLength; ++i) {
// Make sure we call the constructors of each nsCSSShadowItem
// (the first one is called for us because we declared it under private)
new (&mArray[i]) nsCSSShadowItem();
}
}
~nsCSSShadowArray() {
MOZ_COUNT_DTOR(nsCSSShadowArray);
for (uint32_t i = 1; i < mLength; ++i) {
mArray[i].~nsCSSShadowItem();
}
}
uint32_t Length() const { return mLength; }
nsCSSShadowItem* ShadowAt(uint32_t i) {
NS_ABORT_IF_FALSE(i < mLength, "Accessing too high an index in the text shadow array!");
return &mArray[i];
}
const nsCSSShadowItem* ShadowAt(uint32_t i) const {
NS_ABORT_IF_FALSE(i < mLength, "Accessing too high an index in the text shadow array!");
return &mArray[i];
}
bool HasShadowWithInset(bool aInset) {
for (uint32_t i = 0; i < mLength; ++i) {
if (mArray[i].mInset == aInset)
return true;
}
return false;
}
NS_INLINE_DECL_REFCOUNTING(nsCSSShadowArray)
private:
uint32_t mLength;
nsCSSShadowItem mArray[1]; // This MUST be the last item
};
// Border widths are rounded to the nearest-below integer number of pixels,
// but values between zero and one device pixels are always rounded up to
// one device pixel.
#define NS_ROUND_BORDER_TO_PIXELS(l,tpp) \
((l) == 0) ? 0 : NS_MAX((tpp), (l) / (tpp) * (tpp))
// Outline offset is rounded to the nearest integer number of pixels, but values
// between zero and one device pixels are always rounded up to one device pixel.
// Note that the offset can be negative.
#define NS_ROUND_OFFSET_TO_PIXELS(l,tpp) \
(((l) == 0) ? 0 : \
((l) > 0) ? NS_MAX( (tpp), ((l) + ((tpp) / 2)) / (tpp) * (tpp)) : \
NS_MIN(-(tpp), ((l) - ((tpp) / 2)) / (tpp) * (tpp)))
// Returns if the given border style type is visible or not
static bool IsVisibleBorderStyle(uint8_t aStyle)
{
return (aStyle != NS_STYLE_BORDER_STYLE_NONE &&
aStyle != NS_STYLE_BORDER_STYLE_HIDDEN);
}
struct nsStyleBorder {
nsStyleBorder(nsPresContext* aContext);
nsStyleBorder(const nsStyleBorder& aBorder);
~nsStyleBorder();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW;
void Destroy(nsPresContext* aContext);
nsChangeHint CalcDifference(const nsStyleBorder& aOther) const;
static nsChangeHint MaxDifference() {
return NS_CombineHint(NS_STYLE_HINT_REFLOW,
nsChangeHint_BorderStyleNoneChange);
}
void EnsureBorderColors() {
if (!mBorderColors) {
mBorderColors = new nsBorderColors*[4];
if (mBorderColors)
for (int32_t i = 0; i < 4; i++)
mBorderColors[i] = nullptr;
}
}
void ClearBorderColors(mozilla::css::Side aSide) {
if (mBorderColors && mBorderColors[aSide]) {
delete mBorderColors[aSide];
mBorderColors[aSide] = nullptr;
}
}
// Return whether aStyle is a visible style. Invisible styles cause
// the relevant computed border width to be 0.
// Note that this does *not* consider the effects of 'border-image':
// if border-style is none, but there is a loaded border image,
// HasVisibleStyle will be false even though there *is* a border.
bool HasVisibleStyle(mozilla::css::Side aSide) const
{
return IsVisibleBorderStyle(GetBorderStyle(aSide));
}
// aBorderWidth is in twips
void SetBorderWidth(mozilla::css::Side aSide, nscoord aBorderWidth)
{
nscoord roundedWidth =
NS_ROUND_BORDER_TO_PIXELS(aBorderWidth, mTwipsPerPixel);
mBorder.Side(aSide) = roundedWidth;
if (HasVisibleStyle(aSide))
mComputedBorder.Side(aSide) = roundedWidth;
}
// Get the computed border (plus rounding). This does consider the
// effects of 'border-style: none', but does not consider
// 'border-image'.
const nsMargin& GetComputedBorder() const
{
return mComputedBorder;
}
bool HasBorder() const
{
return mComputedBorder != nsMargin(0,0,0,0) || mBorderImageSource;
}
// Get the actual border width for a particular side, in appunits. Note that
// this is zero if and only if there is no border to be painted for this
// side. That is, this value takes into account the border style and the
// value is rounded to the nearest device pixel by NS_ROUND_BORDER_TO_PIXELS.
nscoord GetComputedBorderWidth(mozilla::css::Side aSide) const
{
return GetComputedBorder().Side(aSide);
}
uint8_t GetBorderStyle(mozilla::css::Side aSide) const
{
NS_ASSERTION(aSide <= NS_SIDE_LEFT, "bad side");
return (mBorderStyle[aSide] & BORDER_STYLE_MASK);
}
void SetBorderStyle(mozilla::css::Side aSide, uint8_t aStyle)
{
NS_ASSERTION(aSide <= NS_SIDE_LEFT, "bad side");
mBorderStyle[aSide] &= ~BORDER_STYLE_MASK;
mBorderStyle[aSide] |= (aStyle & BORDER_STYLE_MASK);
mComputedBorder.Side(aSide) =
(HasVisibleStyle(aSide) ? mBorder.Side(aSide) : 0);
}
// Defined in nsStyleStructInlines.h
inline bool IsBorderImageLoaded() const;
inline nsresult RequestDecode();
void GetBorderColor(mozilla::css::Side aSide, nscolor& aColor,
bool& aForeground) const
{
aForeground = false;
NS_ASSERTION(aSide <= NS_SIDE_LEFT, "bad side");
if ((mBorderStyle[aSide] & BORDER_COLOR_SPECIAL) == 0)
aColor = mBorderColor[aSide];
else if (mBorderStyle[aSide] & BORDER_COLOR_FOREGROUND)
aForeground = true;
else
NS_NOTREACHED("OUTLINE_COLOR_INITIAL should not be set here");
}
void SetBorderColor(mozilla::css::Side aSide, nscolor aColor)
{
NS_ASSERTION(aSide <= NS_SIDE_LEFT, "bad side");
mBorderColor[aSide] = aColor;
mBorderStyle[aSide] &= ~BORDER_COLOR_SPECIAL;
}
// These are defined in nsStyleStructInlines.h
inline void SetBorderImage(imgIRequest* aImage);
inline imgIRequest* GetBorderImage() const;
bool HasBorderImage() {return !!mBorderImageSource;}
void TrackImage(nsPresContext* aContext);
void UntrackImage(nsPresContext* aContext);
nsMargin GetImageOutset() const;
// These methods are used for the caller to caches the sub images created during
// a border-image paint operation
inline void SetSubImage(uint8_t aIndex, imgIContainer* aSubImage) const;
inline imgIContainer* GetSubImage(uint8_t aIndex) const;
void GetCompositeColors(int32_t aIndex, nsBorderColors** aColors) const
{
if (!mBorderColors)
*aColors = nullptr;
else
*aColors = mBorderColors[aIndex];
}
void AppendBorderColor(int32_t aIndex, nscolor aColor)
{
NS_ASSERTION(aIndex >= 0 && aIndex <= 3, "bad side for composite border color");
nsBorderColors* colorEntry = new nsBorderColors(aColor);
if (!mBorderColors[aIndex])
mBorderColors[aIndex] = colorEntry;
else {
nsBorderColors* last = mBorderColors[aIndex];
while (last->mNext)
last = last->mNext;
last->mNext = colorEntry;
}
mBorderStyle[aIndex] &= ~BORDER_COLOR_SPECIAL;
}
void SetBorderToForeground(mozilla::css::Side aSide)
{
NS_ASSERTION(aSide <= NS_SIDE_LEFT, "bad side");
mBorderStyle[aSide] &= ~BORDER_COLOR_SPECIAL;
mBorderStyle[aSide] |= BORDER_COLOR_FOREGROUND;
}
public:
nsBorderColors** mBorderColors; // [reset] composite (stripe) colors
nsRefPtr<nsCSSShadowArray> mBoxShadow; // [reset] NULL for 'none'
#ifdef DEBUG
bool mImageTracked;
#endif
protected:
nsCOMPtr<imgIRequest> mBorderImageSource; // [reset]
public:
nsStyleCorners mBorderRadius; // [reset] coord, percent
nsStyleSides mBorderImageSlice; // [reset] factor, percent
nsStyleSides mBorderImageWidth; // [reset] length, factor, percent, auto
nsStyleSides mBorderImageOutset; // [reset] length, factor
uint8_t mBorderImageFill; // [reset]
uint8_t mBorderImageRepeatH; // [reset] see nsStyleConsts.h
uint8_t mBorderImageRepeatV; // [reset]
uint8_t mFloatEdge; // [reset]
protected:
// mComputedBorder holds the CSS2.1 computed border-width values.
// In particular, these widths take into account the border-style
// for the relevant side, and the values are rounded to the nearest
// device pixel (which is not part of the definition of computed
// values). The presence or absence of a border-image does not
// affect border-width values.
nsMargin mComputedBorder;
// mBorder holds the nscoord values for the border widths as they
// would be if all the border-style values were visible (not hidden
// or none). This member exists so that when we create structs
// using the copy constructor during style resolution the new
// structs will know what the specified values of the border were in
// case they have more specific rules setting the border style.
//
// Note that this isn't quite the CSS specified value, since this
// has had the enumerated border widths converted to lengths, and
// all lengths converted to twips. But it's not quite the computed
// value either. The values are rounded to the nearest device pixel.
nsMargin mBorder;
uint8_t mBorderStyle[4]; // [reset] See nsStyleConsts.h
nscolor mBorderColor[4]; // [reset] the colors to use for a simple
// border. not used for -moz-border-colors
private:
// Cache used by callers for border-image painting
nsCOMArray<imgIContainer> mSubImages;
nscoord mTwipsPerPixel;
nsStyleBorder& operator=(const nsStyleBorder& aOther) MOZ_DELETE;
};
struct nsStyleOutline {
nsStyleOutline(nsPresContext* aPresContext);
nsStyleOutline(const nsStyleOutline& aOutline);
~nsStyleOutline(void) {
MOZ_COUNT_DTOR(nsStyleOutline);
}
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleOutline();
aContext->FreeToShell(sizeof(nsStyleOutline), this);
}
void RecalcData(nsPresContext* aContext);
nsChangeHint CalcDifference(const nsStyleOutline& aOther) const;
static nsChangeHint MaxDifference() {
return NS_CombineHint(nsChangeHint_AllReflowHints,
nsChangeHint_RepaintFrame);
}
nsStyleCorners mOutlineRadius; // [reset] coord, percent, calc
// Note that this is a specified value. You can get the actual values
// with GetOutlineWidth. You cannot get the computed value directly.
nsStyleCoord mOutlineWidth; // [reset] coord, enum (see nsStyleConsts.h)
nscoord mOutlineOffset; // [reset]
bool GetOutlineWidth(nscoord& aWidth) const
{
if (mHasCachedOutline) {
aWidth = mCachedOutlineWidth;
return true;
}
return false;
}
uint8_t GetOutlineStyle(void) const
{
return (mOutlineStyle & BORDER_STYLE_MASK);
}
void SetOutlineStyle(uint8_t aStyle)
{
mOutlineStyle &= ~BORDER_STYLE_MASK;
mOutlineStyle |= (aStyle & BORDER_STYLE_MASK);
}
// false means initial value
bool GetOutlineColor(nscolor& aColor) const
{
if ((mOutlineStyle & BORDER_COLOR_SPECIAL) == 0) {
aColor = mOutlineColor;
return true;
}
return false;
}
void SetOutlineColor(nscolor aColor)
{
mOutlineColor = aColor;
mOutlineStyle &= ~BORDER_COLOR_SPECIAL;
}
void SetOutlineInitialColor()
{
mOutlineStyle |= OUTLINE_COLOR_INITIAL;
}
bool GetOutlineInitialColor() const
{
return !!(mOutlineStyle & OUTLINE_COLOR_INITIAL);
}
protected:
// This value is the actual value, so it's rounded to the nearest device
// pixel.
nscoord mCachedOutlineWidth;
nscolor mOutlineColor; // [reset]
bool mHasCachedOutline;
uint8_t mOutlineStyle; // [reset] See nsStyleConsts.h
nscoord mTwipsPerPixel;
};
struct nsStyleList {
nsStyleList(void);
nsStyleList(const nsStyleList& aStyleList);
~nsStyleList(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleList();
aContext->FreeToShell(sizeof(nsStyleList), this);
}
nsChangeHint CalcDifference(const nsStyleList& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
imgIRequest* GetListStyleImage() const { return mListStyleImage; }
void SetListStyleImage(imgIRequest* aReq)
{
if (mListStyleImage)
mListStyleImage->UnlockImage();
mListStyleImage = aReq;
if (mListStyleImage)
mListStyleImage->LockImage();
}
uint8_t mListStyleType; // [inherited] See nsStyleConsts.h
uint8_t mListStylePosition; // [inherited]
private:
nsCOMPtr<imgIRequest> mListStyleImage; // [inherited]
nsStyleList& operator=(const nsStyleList& aOther) MOZ_DELETE;
public:
nsRect mImageRegion; // [inherited] the rect to use within an image
};
struct nsStylePosition {
nsStylePosition(void);
nsStylePosition(const nsStylePosition& aOther);
~nsStylePosition(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStylePosition();
aContext->FreeToShell(sizeof(nsStylePosition), this);
}
nsChangeHint CalcDifference(const nsStylePosition& aOther) const;
static nsChangeHint MaxDifference() {
return NS_CombineHint(NS_STYLE_HINT_REFLOW,
nsChangeHint(nsChangeHint_RecomputePosition |
nsChangeHint_UpdateOverflow));
}
nsStyleSides mOffset; // [reset] coord, percent, calc, auto
nsStyleCoord mWidth; // [reset] coord, percent, enum, calc, auto
nsStyleCoord mMinWidth; // [reset] coord, percent, enum, calc
nsStyleCoord mMaxWidth; // [reset] coord, percent, enum, calc, none
nsStyleCoord mHeight; // [reset] coord, percent, calc, auto
nsStyleCoord mMinHeight; // [reset] coord, percent, calc
nsStyleCoord mMaxHeight; // [reset] coord, percent, calc, none
#ifdef MOZ_FLEXBOX
nsStyleCoord mFlexBasis; // [reset] coord, percent, enum, calc, auto
#endif // MOZ_FLEXBOX
uint8_t mBoxSizing; // [reset] see nsStyleConsts.h
#ifdef MOZ_FLEXBOX
uint8_t mAlignItems; // [reset] see nsStyleConsts.h
uint8_t mAlignSelf; // [reset] see nsStyleConsts.h
uint8_t mFlexDirection; // [reset] see nsStyleConsts.h
uint8_t mJustifyContent; // [reset] see nsStyleConsts.h
int32_t mOrder; // [reset] integer
float mFlexGrow; // [reset] float
float mFlexShrink; // [reset] float
#endif // MOZ_FLEXBOX
nsStyleCoord mZIndex; // [reset] integer, auto
bool WidthDependsOnContainer() const
{
return mWidth.GetUnit() == eStyleUnit_Auto ||
WidthCoordDependsOnContainer(mWidth);
}
// NOTE: For a flex item, "min-width:auto" is supposed to behave like
// "min-content", which does depend on the container, so you might think we'd
// need a special case for "flex item && min-width:auto" here. However,
// we don't actually need that special-case code, because flex items are
// explicitly supposed to *ignore* their min-width (i.e. behave like it's 0)
// until the flex container explicitly considers it. So -- since the flex
// container doesn't rely on this method, we don't need to worry about
// special behavior for flex items' "min-width:auto" values here.
bool MinWidthDependsOnContainer() const
{ return WidthCoordDependsOnContainer(mMinWidth); }
bool MaxWidthDependsOnContainer() const
{ return WidthCoordDependsOnContainer(mMaxWidth); }
// Note that these functions count 'auto' as depending on the
// container since that's the case for absolutely positioned elements.
// However, some callers do not care about this case and should check
// for it, since it is the most common case.
// FIXME: We should probably change the assumption to be the other way
// around.
bool HeightDependsOnContainer() const
{
return mHeight.GetUnit() == eStyleUnit_Auto || // CSS 2.1, 10.6.4, item (5)
HeightCoordDependsOnContainer(mHeight);
}
// NOTE: The comment above MinWidthDependsOnContainer about flex items
// applies here, too.
bool MinHeightDependsOnContainer() const
{ return HeightCoordDependsOnContainer(mMinHeight); }
bool MaxHeightDependsOnContainer() const
{ return HeightCoordDependsOnContainer(mMaxHeight); }
bool OffsetHasPercent(mozilla::css::Side aSide) const
{
return mOffset.Get(aSide).HasPercent();
}
private:
static bool WidthCoordDependsOnContainer(const nsStyleCoord &aCoord);
static bool HeightCoordDependsOnContainer(const nsStyleCoord &aCoord)
{ return aCoord.HasPercent(); }
};
struct nsStyleTextOverflowSide {
nsStyleTextOverflowSide() : mType(NS_STYLE_TEXT_OVERFLOW_CLIP) {}
bool operator==(const nsStyleTextOverflowSide& aOther) const {
return mType == aOther.mType &&
(mType != NS_STYLE_TEXT_OVERFLOW_STRING ||
mString == aOther.mString);
}
bool operator!=(const nsStyleTextOverflowSide& aOther) const {
return !(*this == aOther);
}
nsString mString;
uint8_t mType;
};
struct nsStyleTextOverflow {
nsStyleTextOverflow() : mLogicalDirections(true) {}
bool operator==(const nsStyleTextOverflow& aOther) const {
return mLeft == aOther.mLeft && mRight == aOther.mRight;
}
bool operator!=(const nsStyleTextOverflow& aOther) const {
return !(*this == aOther);
}
// Returns the value to apply on the left side.
const nsStyleTextOverflowSide& GetLeft(uint8_t aDirection) const {
NS_ASSERTION(aDirection == NS_STYLE_DIRECTION_LTR ||
aDirection == NS_STYLE_DIRECTION_RTL, "bad direction");
return !mLogicalDirections || aDirection == NS_STYLE_DIRECTION_LTR ?
mLeft : mRight;
}
// Returns the value to apply on the right side.
const nsStyleTextOverflowSide& GetRight(uint8_t aDirection) const {
NS_ASSERTION(aDirection == NS_STYLE_DIRECTION_LTR ||
aDirection == NS_STYLE_DIRECTION_RTL, "bad direction");
return !mLogicalDirections || aDirection == NS_STYLE_DIRECTION_LTR ?
mRight : mLeft;
}
// Returns the first value that was specified.
const nsStyleTextOverflowSide* GetFirstValue() const {
return mLogicalDirections ? &mRight : &mLeft;
}
// Returns the second value, or null if there was only one value specified.
const nsStyleTextOverflowSide* GetSecondValue() const {
return mLogicalDirections ? nullptr : &mRight;
}
nsStyleTextOverflowSide mLeft; // start side when mLogicalDirections is true
nsStyleTextOverflowSide mRight; // end side when mLogicalDirections is true
bool mLogicalDirections; // true when only one value was specified
};
struct nsStyleTextReset {
nsStyleTextReset(void);
nsStyleTextReset(const nsStyleTextReset& aOther);
~nsStyleTextReset(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleTextReset();
aContext->FreeToShell(sizeof(nsStyleTextReset), this);
}
uint8_t GetDecorationStyle() const
{
return (mTextDecorationStyle & BORDER_STYLE_MASK);
}
void SetDecorationStyle(uint8_t aStyle)
{
NS_ABORT_IF_FALSE((aStyle & BORDER_STYLE_MASK) == aStyle,
"style doesn't fit");
mTextDecorationStyle &= ~BORDER_STYLE_MASK;
mTextDecorationStyle |= (aStyle & BORDER_STYLE_MASK);
}
void GetDecorationColor(nscolor& aColor, bool& aForeground) const
{
aForeground = false;
if ((mTextDecorationStyle & BORDER_COLOR_SPECIAL) == 0) {
aColor = mTextDecorationColor;
} else if (mTextDecorationStyle & BORDER_COLOR_FOREGROUND) {
aForeground = true;
} else {
NS_NOTREACHED("OUTLINE_COLOR_INITIAL should not be set here");
}
}
void SetDecorationColor(nscolor aColor)
{
mTextDecorationColor = aColor;
mTextDecorationStyle &= ~BORDER_COLOR_SPECIAL;
}
void SetDecorationColorToForeground()
{
mTextDecorationStyle &= ~BORDER_COLOR_SPECIAL;
mTextDecorationStyle |= BORDER_COLOR_FOREGROUND;
}
nsChangeHint CalcDifference(const nsStyleTextReset& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_REFLOW;
}
nsStyleCoord mVerticalAlign; // [reset] coord, percent, calc, enum (see nsStyleConsts.h)
nsStyleTextOverflow mTextOverflow; // [reset] enum, string
uint8_t mTextBlink; // [reset] see nsStyleConsts.h
uint8_t mTextDecorationLine; // [reset] see nsStyleConsts.h
uint8_t mUnicodeBidi; // [reset] see nsStyleConsts.h
protected:
uint8_t mTextDecorationStyle; // [reset] see nsStyleConsts.h
nscolor mTextDecorationColor; // [reset] the colors to use for a decoration lines, not used at currentColor
};
struct nsStyleText {
nsStyleText(void);
nsStyleText(const nsStyleText& aOther);
~nsStyleText(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleText();
aContext->FreeToShell(sizeof(nsStyleText), this);
}
nsChangeHint CalcDifference(const nsStyleText& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint8_t mTextAlign; // [inherited] see nsStyleConsts.h
uint8_t mTextAlignLast; // [inherited] see nsStyleConsts.h
uint8_t mTextTransform; // [inherited] see nsStyleConsts.h
uint8_t mWhiteSpace; // [inherited] see nsStyleConsts.h
uint8_t mWordBreak; // [inherited] see nsStyleConsts.h
uint8_t mWordWrap; // [inherited] see nsStyleConsts.h
uint8_t mHyphens; // [inherited] see nsStyleConsts.h
uint8_t mTextSizeAdjust; // [inherited] see nsStyleConsts.h
int32_t mTabSize; // [inherited] see nsStyleConsts.h
nscoord mWordSpacing; // [inherited]
nsStyleCoord mLetterSpacing; // [inherited] coord, normal
nsStyleCoord mLineHeight; // [inherited] coord, factor, normal
nsStyleCoord mTextIndent; // [inherited] coord, percent, calc
nsRefPtr<nsCSSShadowArray> mTextShadow; // [inherited] NULL in case of a zero-length
bool WhiteSpaceIsSignificant() const {
return mWhiteSpace == NS_STYLE_WHITESPACE_PRE ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_WRAP ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_DISCARD_NEWLINES;
}
bool NewlineIsSignificant() const {
return mWhiteSpace == NS_STYLE_WHITESPACE_PRE ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_WRAP ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_LINE;
}
bool NewlineIsDiscarded() const {
return mWhiteSpace == NS_STYLE_WHITESPACE_PRE_DISCARD_NEWLINES;
}
bool WhiteSpaceOrNewlineIsSignificant() const {
return mWhiteSpace == NS_STYLE_WHITESPACE_PRE ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_WRAP ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_LINE ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_DISCARD_NEWLINES;
}
bool WhiteSpaceCanWrap() const {
return mWhiteSpace == NS_STYLE_WHITESPACE_NORMAL ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_WRAP ||
mWhiteSpace == NS_STYLE_WHITESPACE_PRE_LINE;
}
bool WordCanWrap() const {
return WhiteSpaceCanWrap() && mWordWrap == NS_STYLE_WORDWRAP_BREAK_WORD;
}
// These are defined in nsStyleStructInlines.h.
inline bool HasTextShadow(const nsIFrame* aFrame) const;
inline nsCSSShadowArray* GetTextShadow(const nsIFrame* aFrame) const;
};
struct nsStyleVisibility {
nsStyleVisibility(nsPresContext* aPresContext);
nsStyleVisibility(const nsStyleVisibility& aVisibility);
~nsStyleVisibility() {
MOZ_COUNT_DTOR(nsStyleVisibility);
}
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleVisibility();
aContext->FreeToShell(sizeof(nsStyleVisibility), this);
}
nsChangeHint CalcDifference(const nsStyleVisibility& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint8_t mDirection; // [inherited] see nsStyleConsts.h NS_STYLE_DIRECTION_*
uint8_t mVisible; // [inherited]
uint8_t mPointerEvents; // [inherited] see nsStyleConsts.h
bool IsVisible() const {
return (mVisible == NS_STYLE_VISIBILITY_VISIBLE);
}
bool IsVisibleOrCollapsed() const {
return ((mVisible == NS_STYLE_VISIBILITY_VISIBLE) ||
(mVisible == NS_STYLE_VISIBILITY_COLLAPSE));
}
};
struct nsTimingFunction {
enum Type { Function, StepStart, StepEnd };
explicit nsTimingFunction(int32_t aTimingFunctionType
= NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE)
{
AssignFromKeyword(aTimingFunctionType);
}
nsTimingFunction(float x1, float y1, float x2, float y2)
: mType(Function)
{
mFunc.mX1 = x1;
mFunc.mY1 = y1;
mFunc.mX2 = x2;
mFunc.mY2 = y2;
}
nsTimingFunction(Type aType, uint32_t aSteps)
: mType(aType)
{
NS_ABORT_IF_FALSE(mType == StepStart || mType == StepEnd, "wrong type");
mSteps = aSteps;
}
nsTimingFunction(const nsTimingFunction& aOther)
{
*this = aOther;
}
Type mType;
union {
struct {
float mX1;
float mY1;
float mX2;
float mY2;
} mFunc;
uint32_t mSteps;
};
nsTimingFunction&
operator=(const nsTimingFunction& aOther)
{
if (&aOther == this)
return *this;
mType = aOther.mType;
if (mType == Function) {
mFunc.mX1 = aOther.mFunc.mX1;
mFunc.mY1 = aOther.mFunc.mY1;
mFunc.mX2 = aOther.mFunc.mX2;
mFunc.mY2 = aOther.mFunc.mY2;
} else {
mSteps = aOther.mSteps;
}
return *this;
}
bool operator==(const nsTimingFunction& aOther) const
{
if (mType != aOther.mType) {
return false;
}
if (mType == Function) {
return mFunc.mX1 == aOther.mFunc.mX1 && mFunc.mY1 == aOther.mFunc.mY1 &&
mFunc.mX2 == aOther.mFunc.mX2 && mFunc.mY2 == aOther.mFunc.mY2;
}
return mSteps == aOther.mSteps;
}
bool operator!=(const nsTimingFunction& aOther) const
{
return !(*this == aOther);
}
private:
void AssignFromKeyword(int32_t aTimingFunctionType);
};
struct nsTransition {
nsTransition() { /* leaves uninitialized; see also SetInitialValues */ }
explicit nsTransition(const nsTransition& aCopy);
void SetInitialValues();
// Delay and Duration are in milliseconds
const nsTimingFunction& GetTimingFunction() const { return mTimingFunction; }
float GetDelay() const { return mDelay; }
float GetDuration() const { return mDuration; }
nsCSSProperty GetProperty() const { return mProperty; }
nsIAtom* GetUnknownProperty() const { return mUnknownProperty; }
void SetTimingFunction(const nsTimingFunction& aTimingFunction)
{ mTimingFunction = aTimingFunction; }
void SetDelay(float aDelay) { mDelay = aDelay; }
void SetDuration(float aDuration) { mDuration = aDuration; }
void SetProperty(nsCSSProperty aProperty)
{
NS_ASSERTION(aProperty != eCSSProperty_UNKNOWN, "invalid property");
mProperty = aProperty;
}
void SetUnknownProperty(const nsAString& aUnknownProperty);
void CopyPropertyFrom(const nsTransition& aOther)
{
mProperty = aOther.mProperty;
mUnknownProperty = aOther.mUnknownProperty;
}
nsTimingFunction& TimingFunctionSlot() { return mTimingFunction; }
private:
nsTimingFunction mTimingFunction;
float mDuration;
float mDelay;
nsCSSProperty mProperty;
nsCOMPtr<nsIAtom> mUnknownProperty; // used when mProperty is
// eCSSProperty_UNKNOWN
};
struct nsAnimation {
nsAnimation() { /* leaves uninitialized; see also SetInitialValues */ }
explicit nsAnimation(const nsAnimation& aCopy);
void SetInitialValues();
// Delay and Duration are in milliseconds
const nsTimingFunction& GetTimingFunction() const { return mTimingFunction; }
float GetDelay() const { return mDelay; }
float GetDuration() const { return mDuration; }
const nsString& GetName() const { return mName; }
uint8_t GetDirection() const { return mDirection; }
uint8_t GetFillMode() const { return mFillMode; }
uint8_t GetPlayState() const { return mPlayState; }
float GetIterationCount() const { return mIterationCount; }
void SetTimingFunction(const nsTimingFunction& aTimingFunction)
{ mTimingFunction = aTimingFunction; }
void SetDelay(float aDelay) { mDelay = aDelay; }
void SetDuration(float aDuration) { mDuration = aDuration; }
void SetName(const nsSubstring& aName) { mName = aName; }
void SetDirection(uint8_t aDirection) { mDirection = aDirection; }
void SetFillMode(uint8_t aFillMode) { mFillMode = aFillMode; }
void SetPlayState(uint8_t aPlayState) { mPlayState = aPlayState; }
void SetIterationCount(float aIterationCount)
{ mIterationCount = aIterationCount; }
nsTimingFunction& TimingFunctionSlot() { return mTimingFunction; }
private:
nsTimingFunction mTimingFunction;
float mDuration;
float mDelay;
nsString mName; // empty string for 'none'
uint8_t mDirection;
uint8_t mFillMode;
uint8_t mPlayState;
float mIterationCount; // NS_IEEEPositiveInfinity() means infinite
};
struct nsStyleDisplay {
nsStyleDisplay();
nsStyleDisplay(const nsStyleDisplay& aOther);
~nsStyleDisplay() {
MOZ_COUNT_DTOR(nsStyleDisplay);
}
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleDisplay();
aContext->FreeToShell(sizeof(nsStyleDisplay), this);
}
nsChangeHint CalcDifference(const nsStyleDisplay& aOther) const;
static nsChangeHint MaxDifference() {
// All the parts of FRAMECHANGE are present in CalcDifference.
return nsChangeHint(NS_STYLE_HINT_FRAMECHANGE |
nsChangeHint_UpdateOpacityLayer |
nsChangeHint_UpdateTransformLayer |
nsChangeHint_UpdateOverflow |
nsChangeHint_AddOrRemoveTransform);
}
// We guarantee that if mBinding is non-null, so are mBinding->GetURI() and
// mBinding->mOriginPrincipal.
nsRefPtr<mozilla::css::URLValue> mBinding; // [reset]
nsRect mClip; // [reset] offsets from upper-left border edge
float mOpacity; // [reset]
uint8_t mDisplay; // [reset] see nsStyleConsts.h NS_STYLE_DISPLAY_*
uint8_t mOriginalDisplay; // [reset] saved mDisplay for position:absolute/fixed
// and float:left/right; otherwise equal
// to mDisplay
uint8_t mAppearance; // [reset]
uint8_t mPosition; // [reset] see nsStyleConsts.h
uint8_t mFloats; // [reset] see nsStyleConsts.h NS_STYLE_FLOAT_*
uint8_t mOriginalFloats; // [reset] saved mFloats for position:absolute/fixed;
// otherwise equal to mFloats
uint8_t mBreakType; // [reset] see nsStyleConsts.h NS_STYLE_CLEAR_*
bool mBreakBefore; // [reset]
bool mBreakAfter; // [reset]
uint8_t mOverflowX; // [reset] see nsStyleConsts.h
uint8_t mOverflowY; // [reset] see nsStyleConsts.h
uint8_t mResize; // [reset] see nsStyleConsts.h
uint8_t mClipFlags; // [reset] see nsStyleConsts.h
uint8_t mOrient; // [reset] see nsStyleConsts.h
// mSpecifiedTransform is the list of transform functions as
// specified, or null to indicate there is no transform. (inherit or
// initial are replaced by an actual list of transform functions, or
// null, as appropriate.) (owned by the style rule)
uint8_t mBackfaceVisibility;
uint8_t mTransformStyle;
const nsCSSValueList *mSpecifiedTransform; // [reset]
nsStyleCoord mTransformOrigin[3]; // [reset] percent, coord, calc, 3rd param is coord, calc only
nsStyleCoord mChildPerspective; // [reset] coord
nsStyleCoord mPerspectiveOrigin[2]; // [reset] percent, coord, calc
nsAutoTArray<nsTransition, 1> mTransitions; // [reset]
// The number of elements in mTransitions that are not from repeating
// a list due to another property being longer.
uint32_t mTransitionTimingFunctionCount,
mTransitionDurationCount,
mTransitionDelayCount,
mTransitionPropertyCount;
nsAutoTArray<nsAnimation, 1> mAnimations; // [reset]
// The number of elements in mAnimations that are not from repeating
// a list due to another property being longer.
uint32_t mAnimationTimingFunctionCount,
mAnimationDurationCount,
mAnimationDelayCount,
mAnimationNameCount,
mAnimationDirectionCount,
mAnimationFillModeCount,
mAnimationPlayStateCount,
mAnimationIterationCountCount;
bool IsBlockInsideStyle() const {
return NS_STYLE_DISPLAY_BLOCK == mDisplay ||
NS_STYLE_DISPLAY_LIST_ITEM == mDisplay ||
NS_STYLE_DISPLAY_INLINE_BLOCK == mDisplay;
// Should TABLE_CELL and TABLE_CAPTION go here? They have
// block frames nested inside of them.
// (But please audit all callers before changing.)
}
bool IsBlockOutsideStyle() const {
return NS_STYLE_DISPLAY_BLOCK == mDisplay ||
#ifdef MOZ_FLEXBOX
NS_STYLE_DISPLAY_FLEX == mDisplay ||
#endif // MOZ_FLEXBOX
NS_STYLE_DISPLAY_LIST_ITEM == mDisplay ||
NS_STYLE_DISPLAY_TABLE == mDisplay;
}
static bool IsDisplayTypeInlineOutside(uint8_t aDisplay) {
return NS_STYLE_DISPLAY_INLINE == aDisplay ||
NS_STYLE_DISPLAY_INLINE_BLOCK == aDisplay ||
NS_STYLE_DISPLAY_INLINE_TABLE == aDisplay ||
NS_STYLE_DISPLAY_INLINE_BOX == aDisplay ||
#ifdef MOZ_FLEXBOX
NS_STYLE_DISPLAY_INLINE_FLEX == aDisplay ||
#endif // MOZ_FLEXBOX
NS_STYLE_DISPLAY_INLINE_GRID == aDisplay ||
NS_STYLE_DISPLAY_INLINE_STACK == aDisplay;
}
bool IsInlineOutsideStyle() const {
return IsDisplayTypeInlineOutside(mDisplay);
}
bool IsOriginalDisplayInlineOutsideStyle() const {
return IsDisplayTypeInlineOutside(mOriginalDisplay);
}
bool IsFloatingStyle() const {
return NS_STYLE_FLOAT_NONE != mFloats;
}
bool IsAbsolutelyPositionedStyle() const {
return NS_STYLE_POSITION_ABSOLUTE == mPosition ||
NS_STYLE_POSITION_FIXED == mPosition;
}
/* Returns true if we're positioned or there's a transform in effect. */
bool IsPositionedStyle() const {
return IsAbsolutelyPositionedStyle() ||
IsRelativelyPositionedStyle() ||
HasTransform();
}
bool IsRelativelyPositionedStyle() const {
return mPosition == NS_STYLE_POSITION_RELATIVE;
}
bool IsScrollableOverflow() const {
// mOverflowX and mOverflowY always match when one of them is
// NS_STYLE_OVERFLOW_VISIBLE or NS_STYLE_OVERFLOW_CLIP.
return mOverflowX != NS_STYLE_OVERFLOW_VISIBLE &&
mOverflowX != NS_STYLE_OVERFLOW_CLIP;
}
/* Returns whether the element has the -moz-transform property. */
bool HasTransform() const {
return mSpecifiedTransform != nullptr ||
mTransformStyle == NS_STYLE_TRANSFORM_STYLE_PRESERVE_3D ||
mBackfaceVisibility == NS_STYLE_BACKFACE_VISIBILITY_HIDDEN;
}
// These are defined in nsStyleStructInlines.h.
inline bool IsBlockInside(const nsIFrame* aFrame) const;
inline bool IsBlockOutside(const nsIFrame* aFrame) const;
inline bool IsInlineOutside(const nsIFrame* aFrame) const;
inline bool IsOriginalDisplayInlineOutside(const nsIFrame* aFrame) const;
inline uint8_t GetDisplay(const nsIFrame* aFrame) const;
inline bool IsFloating(const nsIFrame* aFrame) const;
inline bool IsPositioned(const nsIFrame* aFrame) const;
inline bool IsRelativelyPositioned(const nsIFrame* aFrame) const;
inline bool IsAbsolutelyPositioned(const nsIFrame* aFrame) const;
};
struct nsStyleTable {
nsStyleTable(void);
nsStyleTable(const nsStyleTable& aOther);
~nsStyleTable(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleTable();
aContext->FreeToShell(sizeof(nsStyleTable), this);
}
nsChangeHint CalcDifference(const nsStyleTable& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint8_t mLayoutStrategy;// [reset] see nsStyleConsts.h NS_STYLE_TABLE_LAYOUT_*
uint8_t mFrame; // [reset] see nsStyleConsts.h NS_STYLE_TABLE_FRAME_*
uint8_t mRules; // [reset] see nsStyleConsts.h NS_STYLE_TABLE_RULES_*
int32_t mCols; // [reset] an integer if set, or see nsStyleConsts.h NS_STYLE_TABLE_COLS_*
int32_t mSpan; // [reset] the number of columns spanned by a colgroup or col
};
struct nsStyleTableBorder {
nsStyleTableBorder(nsPresContext* aContext);
nsStyleTableBorder(const nsStyleTableBorder& aOther);
~nsStyleTableBorder(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleTableBorder();
aContext->FreeToShell(sizeof(nsStyleTableBorder), this);
}
nsChangeHint CalcDifference(const nsStyleTableBorder& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
nscoord mBorderSpacingX;// [inherited]
nscoord mBorderSpacingY;// [inherited]
uint8_t mBorderCollapse;// [inherited]
uint8_t mCaptionSide; // [inherited]
uint8_t mEmptyCells; // [inherited]
};
enum nsStyleContentType {
eStyleContentType_String = 1,
eStyleContentType_Image = 10,
eStyleContentType_Attr = 20,
eStyleContentType_Counter = 30,
eStyleContentType_Counters = 31,
eStyleContentType_OpenQuote = 40,
eStyleContentType_CloseQuote = 41,
eStyleContentType_NoOpenQuote = 42,
eStyleContentType_NoCloseQuote = 43,
eStyleContentType_AltContent = 50
};
struct nsStyleContentData {
nsStyleContentType mType;
union {
PRUnichar *mString;
imgIRequest *mImage;
nsCSSValue::Array* mCounters;
} mContent;
#ifdef DEBUG
bool mImageTracked;
#endif
nsStyleContentData()
: mType(nsStyleContentType(0))
#ifdef DEBUG
, mImageTracked(false)
#endif
{ mContent.mString = nullptr; }
~nsStyleContentData();
nsStyleContentData& operator=(const nsStyleContentData& aOther);
bool operator==(const nsStyleContentData& aOther) const;
bool operator!=(const nsStyleContentData& aOther) const {
return !(*this == aOther);
}
void TrackImage(nsPresContext* aContext);
void UntrackImage(nsPresContext* aContext);
void SetImage(imgIRequest* aRequest)
{
NS_ABORT_IF_FALSE(!mImageTracked,
"Setting a new image without untracking the old one!");
NS_ABORT_IF_FALSE(mType == eStyleContentType_Image, "Wrong type!");
NS_IF_ADDREF(mContent.mImage = aRequest);
}
private:
nsStyleContentData(const nsStyleContentData&); // not to be implemented
};
struct nsStyleCounterData {
nsString mCounter;
int32_t mValue;
};
#define DELETE_ARRAY_IF(array) if (array) { delete[] array; array = nullptr; }
struct nsStyleQuotes {
nsStyleQuotes();
nsStyleQuotes(const nsStyleQuotes& aQuotes);
~nsStyleQuotes();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleQuotes();
aContext->FreeToShell(sizeof(nsStyleQuotes), this);
}
void SetInitial();
void CopyFrom(const nsStyleQuotes& aSource);
nsChangeHint CalcDifference(const nsStyleQuotes& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint32_t QuotesCount(void) const { return mQuotesCount; } // [inherited]
const nsString* OpenQuoteAt(uint32_t aIndex) const
{
NS_ASSERTION(aIndex < mQuotesCount, "out of range");
return mQuotes + (aIndex * 2);
}
const nsString* CloseQuoteAt(uint32_t aIndex) const
{
NS_ASSERTION(aIndex < mQuotesCount, "out of range");
return mQuotes + (aIndex * 2 + 1);
}
nsresult GetQuotesAt(uint32_t aIndex, nsString& aOpen, nsString& aClose) const {
if (aIndex < mQuotesCount) {
aIndex *= 2;
aOpen = mQuotes[aIndex];
aClose = mQuotes[++aIndex];
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
nsresult AllocateQuotes(uint32_t aCount) {
if (aCount != mQuotesCount) {
DELETE_ARRAY_IF(mQuotes);
if (aCount) {
mQuotes = new nsString[aCount * 2];
if (! mQuotes) {
mQuotesCount = 0;
return NS_ERROR_OUT_OF_MEMORY;
}
}
mQuotesCount = aCount;
}
return NS_OK;
}
nsresult SetQuotesAt(uint32_t aIndex, const nsString& aOpen, const nsString& aClose) {
if (aIndex < mQuotesCount) {
aIndex *= 2;
mQuotes[aIndex] = aOpen;
mQuotes[++aIndex] = aClose;
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
protected:
uint32_t mQuotesCount;
nsString* mQuotes;
};
struct nsStyleContent {
nsStyleContent(void);
nsStyleContent(const nsStyleContent& aContent);
~nsStyleContent(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext);
nsChangeHint CalcDifference(const nsStyleContent& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint32_t ContentCount(void) const { return mContentCount; } // [reset]
const nsStyleContentData& ContentAt(uint32_t aIndex) const {
NS_ASSERTION(aIndex < mContentCount, "out of range");
return mContents[aIndex];
}
nsStyleContentData& ContentAt(uint32_t aIndex) {
NS_ASSERTION(aIndex < mContentCount, "out of range");
return mContents[aIndex];
}
nsresult AllocateContents(uint32_t aCount);
uint32_t CounterIncrementCount(void) const { return mIncrementCount; } // [reset]
const nsStyleCounterData* GetCounterIncrementAt(uint32_t aIndex) const {
NS_ASSERTION(aIndex < mIncrementCount, "out of range");
return &mIncrements[aIndex];
}
nsresult AllocateCounterIncrements(uint32_t aCount) {
if (aCount != mIncrementCount) {
DELETE_ARRAY_IF(mIncrements);
if (aCount) {
mIncrements = new nsStyleCounterData[aCount];
if (! mIncrements) {
mIncrementCount = 0;
return NS_ERROR_OUT_OF_MEMORY;
}
}
mIncrementCount = aCount;
}
return NS_OK;
}
nsresult SetCounterIncrementAt(uint32_t aIndex, const nsString& aCounter, int32_t aIncrement) {
if (aIndex < mIncrementCount) {
mIncrements[aIndex].mCounter = aCounter;
mIncrements[aIndex].mValue = aIncrement;
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
uint32_t CounterResetCount(void) const { return mResetCount; } // [reset]
const nsStyleCounterData* GetCounterResetAt(uint32_t aIndex) const {
NS_ASSERTION(aIndex < mResetCount, "out of range");
return &mResets[aIndex];
}
nsresult AllocateCounterResets(uint32_t aCount) {
if (aCount != mResetCount) {
DELETE_ARRAY_IF(mResets);
if (aCount) {
mResets = new nsStyleCounterData[aCount];
if (! mResets) {
mResetCount = 0;
return NS_ERROR_OUT_OF_MEMORY;
}
}
mResetCount = aCount;
}
return NS_OK;
}
nsresult SetCounterResetAt(uint32_t aIndex, const nsString& aCounter, int32_t aValue) {
if (aIndex < mResetCount) {
mResets[aIndex].mCounter = aCounter;
mResets[aIndex].mValue = aValue;
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
nsStyleCoord mMarkerOffset; // [reset] coord, auto
protected:
nsStyleContentData* mContents;
nsStyleCounterData* mIncrements;
nsStyleCounterData* mResets;
uint32_t mContentCount;
uint32_t mIncrementCount;
uint32_t mResetCount;
};
struct nsStyleUIReset {
nsStyleUIReset(void);
nsStyleUIReset(const nsStyleUIReset& aOther);
~nsStyleUIReset(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleUIReset();
aContext->FreeToShell(sizeof(nsStyleUIReset), this);
}
nsChangeHint CalcDifference(const nsStyleUIReset& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint8_t mUserSelect; // [reset] (selection-style)
uint8_t mForceBrokenImageIcon; // [reset] (0 if not forcing, otherwise forcing)
uint8_t mIMEMode; // [reset]
uint8_t mWindowShadow; // [reset]
};
struct nsCursorImage {
bool mHaveHotspot;
float mHotspotX, mHotspotY;
nsCursorImage();
nsCursorImage(const nsCursorImage& aOther);
~nsCursorImage();
nsCursorImage& operator=(const nsCursorImage& aOther);
/*
* We hide mImage and force access through the getter and setter so that we
* can lock the images we use. Cursor images are likely to be small, so we
* don't care about discarding them. See bug 512260.
* */
void SetImage(imgIRequest *aImage) {
if (mImage)
mImage->UnlockImage();
mImage = aImage;
if (mImage)
mImage->LockImage();
}
imgIRequest* GetImage() const {
return mImage;
}
private:
nsCOMPtr<imgIRequest> mImage;
};
struct nsStyleUserInterface {
nsStyleUserInterface(void);
nsStyleUserInterface(const nsStyleUserInterface& aOther);
~nsStyleUserInterface(void);
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleUserInterface();
aContext->FreeToShell(sizeof(nsStyleUserInterface), this);
}
nsChangeHint CalcDifference(const nsStyleUserInterface& aOther) const;
static nsChangeHint MaxDifference() {
return nsChangeHint(nsChangeHint_UpdateCursor | NS_STYLE_HINT_FRAMECHANGE);
}
uint8_t mUserInput; // [inherited]
uint8_t mUserModify; // [inherited] (modify-content)
uint8_t mUserFocus; // [inherited] (auto-select)
uint8_t mCursor; // [inherited] See nsStyleConsts.h
uint32_t mCursorArrayLength;
nsCursorImage *mCursorArray;// [inherited] The specified URL values
// and coordinates. Takes precedence over
// mCursor. Zero-length array is represented
// by null pointer.
// Does not free mCursorArray; the caller is responsible for calling
// |delete [] mCursorArray| first if it is needed.
void CopyCursorArrayFrom(const nsStyleUserInterface& aSource);
};
struct nsStyleXUL {
nsStyleXUL();
nsStyleXUL(const nsStyleXUL& aSource);
~nsStyleXUL();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleXUL();
aContext->FreeToShell(sizeof(nsStyleXUL), this);
}
nsChangeHint CalcDifference(const nsStyleXUL& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
float mBoxFlex; // [reset] see nsStyleConsts.h
uint32_t mBoxOrdinal; // [reset] see nsStyleConsts.h
uint8_t mBoxAlign; // [reset] see nsStyleConsts.h
uint8_t mBoxDirection; // [reset] see nsStyleConsts.h
uint8_t mBoxOrient; // [reset] see nsStyleConsts.h
uint8_t mBoxPack; // [reset] see nsStyleConsts.h
bool mStretchStack; // [reset] see nsStyleConsts.h
};
struct nsStyleColumn {
nsStyleColumn(nsPresContext* aPresContext);
nsStyleColumn(const nsStyleColumn& aSource);
~nsStyleColumn();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleColumn();
aContext->FreeToShell(sizeof(nsStyleColumn), this);
}
nsChangeHint CalcDifference(const nsStyleColumn& aOther) const;
static nsChangeHint MaxDifference() {
return NS_STYLE_HINT_FRAMECHANGE;
}
uint32_t mColumnCount; // [reset] see nsStyleConsts.h
nsStyleCoord mColumnWidth; // [reset] coord, auto
nsStyleCoord mColumnGap; // [reset] coord, normal
nscolor mColumnRuleColor; // [reset]
uint8_t mColumnRuleStyle; // [reset]
uint8_t mColumnFill; // [reset] see nsStyleConsts.h
// See https://bugzilla.mozilla.org/show_bug.cgi?id=271586#c43 for why
// this is hard to replace with 'currentColor'.
bool mColumnRuleColorIsForeground;
void SetColumnRuleWidth(nscoord aWidth) {
mColumnRuleWidth = NS_ROUND_BORDER_TO_PIXELS(aWidth, mTwipsPerPixel);
}
nscoord GetComputedColumnRuleWidth() const {
return (IsVisibleBorderStyle(mColumnRuleStyle) ? mColumnRuleWidth : 0);
}
protected:
nscoord mColumnRuleWidth; // [reset] coord
nscoord mTwipsPerPixel;
};
enum nsStyleSVGPaintType {
eStyleSVGPaintType_None = 1,
eStyleSVGPaintType_Color,
eStyleSVGPaintType_Server,
eStyleSVGPaintType_ObjectFill,
eStyleSVGPaintType_ObjectStroke
};
enum nsStyleSVGOpacitySource {
eStyleSVGOpacitySource_Normal,
eStyleSVGOpacitySource_ObjectFillOpacity,
eStyleSVGOpacitySource_ObjectStrokeOpacity
};
struct nsStyleSVGPaint
{
union {
nscolor mColor;
nsIURI *mPaintServer;
} mPaint;
nsStyleSVGPaintType mType;
nscolor mFallbackColor;
nsStyleSVGPaint() : mType(nsStyleSVGPaintType(0)) { mPaint.mPaintServer = nullptr; }
~nsStyleSVGPaint();
void SetType(nsStyleSVGPaintType aType);
nsStyleSVGPaint& operator=(const nsStyleSVGPaint& aOther);
bool operator==(const nsStyleSVGPaint& aOther) const;
bool operator!=(const nsStyleSVGPaint& aOther) const {
return !(*this == aOther);
}
};
struct nsStyleSVG {
nsStyleSVG();
nsStyleSVG(const nsStyleSVG& aSource);
~nsStyleSVG();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleSVG();
aContext->FreeToShell(sizeof(nsStyleSVG), this);
}
nsChangeHint CalcDifference(const nsStyleSVG& aOther) const;
static nsChangeHint MaxDifference() {
return NS_CombineHint(NS_CombineHint(nsChangeHint_UpdateEffects,
nsChangeHint_AllReflowHints),
nsChangeHint_RepaintFrame);
}
nsStyleSVGPaint mFill; // [inherited]
nsStyleSVGPaint mStroke; // [inherited]
nsCOMPtr<nsIURI> mMarkerEnd; // [inherited]
nsCOMPtr<nsIURI> mMarkerMid; // [inherited]
nsCOMPtr<nsIURI> mMarkerStart; // [inherited]
nsStyleCoord *mStrokeDasharray; // [inherited] coord, percent, factor
nsStyleCoord mStrokeDashoffset; // [inherited] coord, percent, factor
nsStyleCoord mStrokeWidth; // [inherited] coord, percent, factor
float mFillOpacity; // [inherited]
float mStrokeMiterlimit; // [inherited]
float mStrokeOpacity; // [inherited]
uint32_t mStrokeDasharrayLength;
uint8_t mClipRule; // [inherited]
uint8_t mColorInterpolation; // [inherited] see nsStyleConsts.h
uint8_t mColorInterpolationFilters; // [inherited] see nsStyleConsts.h
uint8_t mFillRule; // [inherited] see nsStyleConsts.h
uint8_t mImageRendering; // [inherited] see nsStyleConsts.h
uint8_t mShapeRendering; // [inherited] see nsStyleConsts.h
uint8_t mStrokeLinecap; // [inherited] see nsStyleConsts.h
uint8_t mStrokeLinejoin; // [inherited] see nsStyleConsts.h
uint8_t mTextAnchor; // [inherited] see nsStyleConsts.h
uint8_t mTextRendering; // [inherited] see nsStyleConsts.h
// In SVG glyphs, whether we inherit fill or stroke opacity from the outer
// text object.
// Use 3 bits to avoid signedness problems in MSVC.
nsStyleSVGOpacitySource mFillOpacitySource : 3;
nsStyleSVGOpacitySource mStrokeOpacitySource : 3;
// SVG glyph outer object inheritance for other properties
bool mStrokeDasharrayFromObject : 1;
bool mStrokeDashoffsetFromObject : 1;
bool mStrokeWidthFromObject : 1;
};
struct nsStyleSVGReset {
nsStyleSVGReset();
nsStyleSVGReset(const nsStyleSVGReset& aSource);
~nsStyleSVGReset();
void* operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
return aContext->AllocateFromShell(sz);
}
void Destroy(nsPresContext* aContext) {
this->~nsStyleSVGReset();
aContext->FreeToShell(sizeof(nsStyleSVGReset), this);
}
nsChangeHint CalcDifference(const nsStyleSVGReset& aOther) const;
static nsChangeHint MaxDifference() {
return NS_CombineHint(NS_CombineHint(nsChangeHint_UpdateEffects,
nsChangeHint_AllReflowHints),
nsChangeHint_RepaintFrame);
}
nsCOMPtr<nsIURI> mClipPath; // [reset]
nsCOMPtr<nsIURI> mFilter; // [reset]
nsCOMPtr<nsIURI> mMask; // [reset]
nscolor mStopColor; // [reset]
nscolor mFloodColor; // [reset]
nscolor mLightingColor; // [reset]
float mStopOpacity; // [reset]
float mFloodOpacity; // [reset]
uint8_t mDominantBaseline; // [reset] see nsStyleConsts.h
uint8_t mVectorEffect; // [reset] see nsStyleConsts.h
};
#endif /* nsStyleStruct_h___ */
Reference in New Issue View Git Blame Copy Permalink