зеркало из https://github.com/mozilla/pjs.git
1466 строки
48 KiB
C++
1466 строки
48 KiB
C++
/* -*- 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.org 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):
|
|
* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
|
|
*
|
|
* 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 ***** */
|
|
|
|
/* a presentation of a document, part 1 */
|
|
|
|
#ifndef nsPresContext_h___
|
|
#define nsPresContext_h___
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsColor.h"
|
|
#include "nsCoord.h"
|
|
#include "nsAString.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsRect.h"
|
|
#include "nsDeviceContext.h"
|
|
#include "nsFont.h"
|
|
#include "nsIWeakReference.h"
|
|
#include "nsITheme.h"
|
|
#include "nsILanguageAtomService.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsITimer.h"
|
|
#include "nsCRT.h"
|
|
#include "nsIPrintSettings.h"
|
|
#include "FramePropertyTable.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsRefPtrHashtable.h"
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsChangeHint.h"
|
|
// This also pulls in gfxTypes.h, which we cannot include directly.
|
|
#include "gfxRect.h"
|
|
#include "nsRegion.h"
|
|
#include "nsTArray.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "nsThreadUtils.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsIWidget.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
#include "nsIContent.h"
|
|
#include "prclist.h"
|
|
|
|
class nsImageLoader;
|
|
#ifdef IBMBIDI
|
|
class nsBidiPresUtils;
|
|
#endif // IBMBIDI
|
|
|
|
struct nsRect;
|
|
|
|
class imgIRequest;
|
|
|
|
class nsFontMetrics;
|
|
class nsIFrame;
|
|
class nsFrameManager;
|
|
class nsILinkHandler;
|
|
class nsStyleContext;
|
|
class nsIAtom;
|
|
class nsEventStateManager;
|
|
class nsIURI;
|
|
class nsILookAndFeel;
|
|
class nsICSSPseudoComparator;
|
|
class nsIAtom;
|
|
struct nsStyleBackground;
|
|
struct nsStyleBorder;
|
|
class nsIRunnable;
|
|
class gfxUserFontSet;
|
|
class nsUserFontSet;
|
|
struct nsFontFaceRuleContainer;
|
|
class nsObjectFrame;
|
|
class nsTransitionManager;
|
|
class nsAnimationManager;
|
|
class nsRefreshDriver;
|
|
class imgIContainer;
|
|
class nsIDOMMediaQueryList;
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
class nsRenderingContext;
|
|
#endif
|
|
|
|
enum nsWidgetType {
|
|
eWidgetType_Button = 1,
|
|
eWidgetType_Checkbox = 2,
|
|
eWidgetType_Radio = 3,
|
|
eWidgetType_Text = 4
|
|
};
|
|
|
|
enum nsLanguageSpecificTransformType {
|
|
eLanguageSpecificTransformType_Unknown = -1,
|
|
eLanguageSpecificTransformType_None = 0,
|
|
eLanguageSpecificTransformType_Japanese
|
|
};
|
|
|
|
// supported values for cached bool types
|
|
enum nsPresContext_CachedBoolPrefType {
|
|
kPresContext_UseDocumentColors = 1,
|
|
kPresContext_UseDocumentFonts,
|
|
kPresContext_UnderlineLinks
|
|
};
|
|
|
|
// supported values for cached integer pref types
|
|
enum nsPresContext_CachedIntPrefType {
|
|
kPresContext_MinimumFontSize = 1,
|
|
kPresContext_ScrollbarSide,
|
|
kPresContext_BidiDirection
|
|
};
|
|
|
|
// IDs for the default variable and fixed fonts (not to be changed, see nsFont.h)
|
|
// To be used for Get/SetDefaultFont(). The other IDs in nsFont.h are also supported.
|
|
const PRUint8 kPresContext_DefaultVariableFont_ID = 0x00; // kGenericFont_moz_variable
|
|
const PRUint8 kPresContext_DefaultFixedFont_ID = 0x01; // kGenericFont_moz_fixed
|
|
|
|
#ifdef DEBUG
|
|
struct nsAutoLayoutPhase;
|
|
|
|
enum nsLayoutPhase {
|
|
eLayoutPhase_Paint,
|
|
eLayoutPhase_Reflow,
|
|
eLayoutPhase_FrameC,
|
|
eLayoutPhase_COUNT
|
|
};
|
|
#endif
|
|
|
|
class nsInvalidateRequestList {
|
|
public:
|
|
struct Request {
|
|
nsRect mRect;
|
|
PRUint32 mFlags;
|
|
};
|
|
|
|
nsTArray<Request> mRequests;
|
|
};
|
|
|
|
/* Used by nsPresContext::HasAuthorSpecifiedRules */
|
|
#define NS_AUTHOR_SPECIFIED_BACKGROUND (1 << 0)
|
|
#define NS_AUTHOR_SPECIFIED_BORDER (1 << 1)
|
|
#define NS_AUTHOR_SPECIFIED_PADDING (1 << 2)
|
|
|
|
class nsRootPresContext;
|
|
|
|
// An interface for presentation contexts. Presentation contexts are
|
|
// objects that provide an outer context for a presentation shell.
|
|
|
|
class nsPresContext : public nsIObserver {
|
|
public:
|
|
typedef mozilla::FramePropertyTable FramePropertyTable;
|
|
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
NS_DECL_NSIOBSERVER
|
|
NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
|
|
NS_DECL_CYCLE_COLLECTION_CLASS(nsPresContext)
|
|
|
|
enum nsPresContextType {
|
|
eContext_Galley, // unpaginated screen presentation
|
|
eContext_PrintPreview, // paginated screen presentation
|
|
eContext_Print, // paginated printer presentation
|
|
eContext_PageLayout // paginated & editable.
|
|
};
|
|
|
|
nsPresContext(nsIDocument* aDocument, nsPresContextType aType) NS_HIDDEN;
|
|
|
|
/**
|
|
* Initialize the presentation context from a particular device.
|
|
*/
|
|
NS_HIDDEN_(nsresult) Init(nsDeviceContext* aDeviceContext);
|
|
|
|
/**
|
|
* Set the presentation shell that this context is bound to.
|
|
* A presentation context may only be bound to a single shell.
|
|
*/
|
|
NS_HIDDEN_(void) SetShell(nsIPresShell* aShell);
|
|
|
|
|
|
NS_HIDDEN_(nsPresContextType) Type() const { return mType; }
|
|
|
|
/**
|
|
* Get the PresentationShell that this context is bound to.
|
|
*/
|
|
nsIPresShell* PresShell() const
|
|
{
|
|
NS_ASSERTION(mShell, "Null pres shell");
|
|
return mShell;
|
|
}
|
|
|
|
nsIPresShell* GetPresShell() const { return mShell; }
|
|
|
|
/**
|
|
* Return the presentation context for the root of the view manager
|
|
* hierarchy that contains this presentation context, or nsnull if it can't
|
|
* be found (e.g. it's detached).
|
|
*/
|
|
nsRootPresContext* GetRootPresContext();
|
|
virtual PRBool IsRoot() { return PR_FALSE; }
|
|
|
|
nsIDocument* Document() const
|
|
{
|
|
NS_ASSERTION(!mShell || !mShell->GetDocument() ||
|
|
mShell->GetDocument() == mDocument,
|
|
"nsPresContext doesn't have the same document as nsPresShell!");
|
|
return mDocument;
|
|
}
|
|
|
|
#ifdef _IMPL_NS_LAYOUT
|
|
nsStyleSet* StyleSet() { return GetPresShell()->StyleSet(); }
|
|
|
|
nsFrameManager* FrameManager()
|
|
{ return GetPresShell()->FrameManager(); }
|
|
|
|
nsTransitionManager* TransitionManager() { return mTransitionManager; }
|
|
nsAnimationManager* AnimationManager() { return mAnimationManager; }
|
|
|
|
nsRefreshDriver* RefreshDriver() { return mRefreshDriver; }
|
|
#endif
|
|
|
|
/**
|
|
* Rebuilds all style data by throwing out the old rule tree and
|
|
* building a new one, and additionally applying aExtraHint (which
|
|
* must not contain nsChangeHint_ReconstructFrame) to the root frame.
|
|
* Also rebuild the user font set.
|
|
*/
|
|
void RebuildAllStyleData(nsChangeHint aExtraHint);
|
|
/**
|
|
* Just like RebuildAllStyleData, except (1) asynchronous and (2) it
|
|
* doesn't rebuild the user font set.
|
|
*/
|
|
void PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint);
|
|
|
|
void MediaFeatureValuesChanged(PRBool aCallerWillRebuildStyleData);
|
|
void PostMediaFeatureValuesChangedEvent();
|
|
NS_HIDDEN_(void) HandleMediaFeatureValuesChangedEvent();
|
|
void FlushPendingMediaFeatureValuesChanged() {
|
|
if (mPendingMediaFeatureValuesChanged)
|
|
MediaFeatureValuesChanged(PR_FALSE);
|
|
}
|
|
|
|
/**
|
|
* Support for window.matchMedia()
|
|
*/
|
|
void MatchMedia(const nsAString& aMediaQueryList,
|
|
nsIDOMMediaQueryList** aResult);
|
|
|
|
/**
|
|
* Access compatibility mode for this context. This is the same as
|
|
* our document's compatibility mode.
|
|
*/
|
|
nsCompatibility CompatibilityMode() const {
|
|
return Document()->GetCompatibilityMode();
|
|
}
|
|
/**
|
|
* Notify the context that the document's compatibility mode has changed
|
|
*/
|
|
NS_HIDDEN_(void) CompatibilityModeChanged();
|
|
|
|
/**
|
|
* Access the image animation mode for this context
|
|
*/
|
|
PRUint16 ImageAnimationMode() const { return mImageAnimationMode; }
|
|
virtual NS_HIDDEN_(void) SetImageAnimationModeExternal(PRUint16 aMode);
|
|
NS_HIDDEN_(void) SetImageAnimationModeInternal(PRUint16 aMode);
|
|
#ifdef _IMPL_NS_LAYOUT
|
|
void SetImageAnimationMode(PRUint16 aMode)
|
|
{ SetImageAnimationModeInternal(aMode); }
|
|
#else
|
|
void SetImageAnimationMode(PRUint16 aMode)
|
|
{ SetImageAnimationModeExternal(aMode); }
|
|
#endif
|
|
|
|
/**
|
|
* Get cached look and feel service. This is faster than obtaining it
|
|
* through the service manager.
|
|
*/
|
|
nsILookAndFeel* LookAndFeel() { return mLookAndFeel; }
|
|
|
|
/**
|
|
* Get medium of presentation
|
|
*/
|
|
nsIAtom* Medium() { return mMedium; }
|
|
|
|
void* AllocateFromShell(size_t aSize)
|
|
{
|
|
if (mShell)
|
|
return mShell->AllocateMisc(aSize);
|
|
return nsnull;
|
|
}
|
|
|
|
void FreeToShell(size_t aSize, void* aFreeChunk)
|
|
{
|
|
NS_ASSERTION(mShell, "freeing after shutdown");
|
|
if (mShell)
|
|
mShell->FreeMisc(aSize, aFreeChunk);
|
|
}
|
|
|
|
/**
|
|
* Get the font metrics for a given font.
|
|
*
|
|
* If aUseUserFontSet is false, don't build or use the user font set.
|
|
* This is intended only for nsRuleNode::CalcLengthWithInitialFont
|
|
* (which is used from media query matching, which is in turn called
|
|
* when building the user font set).
|
|
*/
|
|
NS_HIDDEN_(already_AddRefed<nsFontMetrics>)
|
|
GetMetricsFor(const nsFont& aFont, PRBool aUseUserFontSet = PR_TRUE);
|
|
|
|
/**
|
|
* Get the default font corresponding to the given ID. This object is
|
|
* read-only, you must copy the font to modify it.
|
|
*
|
|
* When aFontID is kPresContext_DefaultVariableFontID or
|
|
* kPresContext_DefaultFixedFontID (which equals
|
|
* kGenericFont_moz_fixed, which is used for the -moz-fixed generic),
|
|
* the nsFont returned has its name as a CSS generic family (serif or
|
|
* sans-serif for the former, monospace for the latter), and its size
|
|
* as the default font size for variable or fixed fonts for the pres
|
|
* context's language group.
|
|
*
|
|
* For aFontID corresponds to a CSS Generic, the nsFont returned has
|
|
* its name as the name or names of the fonts in the user's
|
|
* preferences for the given generic and the pres context's language
|
|
* group, and its size set to the default variable font size.
|
|
*/
|
|
NS_HIDDEN_(const nsFont*) GetDefaultFont(PRUint8 aFontID) const;
|
|
|
|
/** Get a cached boolean pref, by its type */
|
|
// * - initially created for bugs 31816, 20760, 22963
|
|
PRBool GetCachedBoolPref(nsPresContext_CachedBoolPrefType aPrefType) const
|
|
{
|
|
// If called with a constant parameter, the compiler should optimize
|
|
// this switch statement away.
|
|
switch (aPrefType) {
|
|
case kPresContext_UseDocumentFonts:
|
|
return mUseDocumentFonts;
|
|
case kPresContext_UseDocumentColors:
|
|
return mUseDocumentColors;
|
|
case kPresContext_UnderlineLinks:
|
|
return mUnderlineLinks;
|
|
default:
|
|
NS_ERROR("Invalid arg passed to GetCachedBoolPref");
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/** Get a cached integer pref, by its type */
|
|
// * - initially created for bugs 30910, 61883, 74186, 84398
|
|
PRInt32 GetCachedIntPref(nsPresContext_CachedIntPrefType aPrefType) const
|
|
{
|
|
// If called with a constant parameter, the compiler should optimize
|
|
// this switch statement away.
|
|
switch (aPrefType) {
|
|
case kPresContext_MinimumFontSize:
|
|
return mMinimumFontSizePref;
|
|
case kPresContext_ScrollbarSide:
|
|
return mPrefScrollbarSide;
|
|
case kPresContext_BidiDirection:
|
|
return mPrefBidiDirection;
|
|
default:
|
|
NS_ERROR("invalid arg passed to GetCachedIntPref");
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Access Nav's magic font scaler value
|
|
*/
|
|
PRInt32 FontScaler() const { return mFontScaler; }
|
|
|
|
/**
|
|
* Get the default colors
|
|
*/
|
|
const nscolor DefaultColor() const { return mDefaultColor; }
|
|
const nscolor DefaultBackgroundColor() const { return mBackgroundColor; }
|
|
const nscolor DefaultLinkColor() const { return mLinkColor; }
|
|
const nscolor DefaultActiveLinkColor() const { return mActiveLinkColor; }
|
|
const nscolor DefaultVisitedLinkColor() const { return mVisitedLinkColor; }
|
|
const nscolor FocusBackgroundColor() const { return mFocusBackgroundColor; }
|
|
const nscolor FocusTextColor() const { return mFocusTextColor; }
|
|
|
|
/**
|
|
* Body text color, for use in quirks mode only.
|
|
*/
|
|
const nscolor BodyTextColor() const { return mBodyTextColor; }
|
|
void SetBodyTextColor(nscolor aColor) { mBodyTextColor = aColor; }
|
|
|
|
PRBool GetUseFocusColors() const { return mUseFocusColors; }
|
|
PRUint8 FocusRingWidth() const { return mFocusRingWidth; }
|
|
PRBool GetFocusRingOnAnything() const { return mFocusRingOnAnything; }
|
|
PRUint8 GetFocusRingStyle() const { return mFocusRingStyle; }
|
|
|
|
/**
|
|
* The types of image load types that the pres context needs image
|
|
* loaders to track invalidation for.
|
|
*/
|
|
enum ImageLoadType {
|
|
BACKGROUND_IMAGE,
|
|
BORDER_IMAGE,
|
|
IMAGE_LOAD_TYPE_COUNT
|
|
};
|
|
|
|
/**
|
|
* Set the list of image loaders that track invalidation for a
|
|
* specific frame and type of image. This list will replace any
|
|
* previous list for that frame and image type (and null will remove
|
|
* any previous list).
|
|
*/
|
|
NS_HIDDEN_(void) SetImageLoaders(nsIFrame* aTargetFrame,
|
|
ImageLoadType aType,
|
|
nsImageLoader* aImageLoaders);
|
|
|
|
/**
|
|
* Make an appropriate SetImageLoaders call (including potentially
|
|
* with null aImageLoaders) given that aFrame draws its background
|
|
* based on aStyleBackground.
|
|
*/
|
|
NS_HIDDEN_(void) SetupBackgroundImageLoaders(nsIFrame* aFrame,
|
|
const nsStyleBackground*
|
|
aStyleBackground);
|
|
|
|
/**
|
|
* Make an appropriate SetImageLoaders call (including potentially
|
|
* with null aImageLoaders) given that aFrame draws its border
|
|
* based on aStyleBorder.
|
|
*/
|
|
NS_HIDDEN_(void) SetupBorderImageLoaders(nsIFrame* aFrame,
|
|
const nsStyleBorder* aStyleBorder);
|
|
|
|
/**
|
|
* This method is called when a frame is being destroyed to
|
|
* ensure that the image loads get disassociated from the prescontext
|
|
*/
|
|
NS_HIDDEN_(void) StopImagesFor(nsIFrame* aTargetFrame);
|
|
|
|
NS_HIDDEN_(void) SetContainer(nsISupports* aContainer);
|
|
|
|
virtual NS_HIDDEN_(already_AddRefed<nsISupports>) GetContainerExternal() const;
|
|
NS_HIDDEN_(already_AddRefed<nsISupports>) GetContainerInternal() const;
|
|
#ifdef _IMPL_NS_LAYOUT
|
|
already_AddRefed<nsISupports> GetContainer() const
|
|
{ return GetContainerInternal(); }
|
|
#else
|
|
already_AddRefed<nsISupports> GetContainer() const
|
|
{ return GetContainerExternal(); }
|
|
#endif
|
|
|
|
// XXX this are going to be replaced with set/get container
|
|
void SetLinkHandler(nsILinkHandler* aHandler) { mLinkHandler = aHandler; }
|
|
nsILinkHandler* GetLinkHandler() { return mLinkHandler; }
|
|
|
|
/**
|
|
* Get the visible area associated with this presentation context.
|
|
* This is the size of the visible area that is used for
|
|
* presenting the document. The returned value is in the standard
|
|
* nscoord units (as scaled by the device context).
|
|
*/
|
|
nsRect GetVisibleArea() { return mVisibleArea; }
|
|
|
|
/**
|
|
* Set the currently visible area. The units for r are standard
|
|
* nscoord units (as scaled by the device context).
|
|
*/
|
|
void SetVisibleArea(const nsRect& r) {
|
|
if (!r.IsEqualEdges(mVisibleArea)) {
|
|
mVisibleArea = r;
|
|
// Visible area does not affect media queries when paginated.
|
|
if (!IsPaginated() && HasCachedStyleData())
|
|
PostMediaFeatureValuesChangedEvent();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return true if this presentation context is a paginated
|
|
* context.
|
|
*/
|
|
PRBool IsPaginated() const { return mPaginated; }
|
|
|
|
/**
|
|
* Sets whether the presentation context can scroll for a paginated
|
|
* context.
|
|
*/
|
|
NS_HIDDEN_(void) SetPaginatedScrolling(PRBool aResult);
|
|
|
|
/**
|
|
* Return true if this presentation context can scroll for paginated
|
|
* context.
|
|
*/
|
|
PRBool HasPaginatedScrolling() const { return mCanPaginatedScroll; }
|
|
|
|
/**
|
|
* Get/set the size of a page
|
|
*/
|
|
nsSize GetPageSize() { return mPageSize; }
|
|
void SetPageSize(nsSize aSize) { mPageSize = aSize; }
|
|
|
|
/**
|
|
* Get/set whether this document should be treated as having real pages
|
|
* XXX This raises the obvious question of why a document that isn't a page
|
|
* is paginated; there isn't a good reason except history
|
|
*/
|
|
PRBool IsRootPaginatedDocument() { return mIsRootPaginatedDocument; }
|
|
void SetIsRootPaginatedDocument(PRBool aIsRootPaginatedDocument)
|
|
{ mIsRootPaginatedDocument = aIsRootPaginatedDocument; }
|
|
|
|
/**
|
|
* Get/set the print scaling level; used by nsPageFrame to scale up
|
|
* pages. Set safe to call before reflow, get guaranteed to be set
|
|
* properly after reflow.
|
|
*/
|
|
|
|
float GetPageScale() { return mPageScale; }
|
|
void SetPageScale(float aScale) { mPageScale = aScale; }
|
|
|
|
/**
|
|
* Get/set the scaling facor to use when rendering the pages for print preview.
|
|
* Only safe to get after print preview set up; safe to set anytime.
|
|
* This is a scaling factor for the display of the print preview. It
|
|
* does not affect layout. It only affects the size of the onscreen pages
|
|
* in print preview.
|
|
* XXX Temporary: see http://wiki.mozilla.org/Gecko:PrintPreview
|
|
*/
|
|
float GetPrintPreviewScale() { return mPPScale; }
|
|
void SetPrintPreviewScale(float aScale) { mPPScale = aScale; }
|
|
|
|
nsDeviceContext* DeviceContext() { return mDeviceContext; }
|
|
nsEventStateManager* EventStateManager() { return mEventManager; }
|
|
nsIAtom* GetLanguageFromCharset() { return mLanguage; }
|
|
|
|
float TextZoom() { return mTextZoom; }
|
|
void SetTextZoom(float aZoom) {
|
|
if (aZoom == mTextZoom)
|
|
return;
|
|
|
|
mTextZoom = aZoom;
|
|
if (HasCachedStyleData()) {
|
|
// Media queries could have changed since we changed the meaning
|
|
// of 'em' units in them.
|
|
MediaFeatureValuesChanged(PR_TRUE);
|
|
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
|
|
PRInt32 MinFontSize() const {
|
|
return NS_MAX(mMinFontSize, mMinimumFontSizePref);
|
|
}
|
|
|
|
void SetMinFontSize(PRInt32 aMinFontSize) {
|
|
if (aMinFontSize == mMinFontSize)
|
|
return;
|
|
|
|
mMinFontSize = aMinFontSize;
|
|
if (HasCachedStyleData()) {
|
|
// Media queries could have changed since we changed the meaning
|
|
// of 'em' units in them.
|
|
MediaFeatureValuesChanged(PR_TRUE);
|
|
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
|
|
float GetFullZoom() { return mFullZoom; }
|
|
void SetFullZoom(float aZoom);
|
|
|
|
nscoord GetAutoQualityMinFontSize() {
|
|
return DevPixelsToAppUnits(mAutoQualityMinFontSizePixelsPref);
|
|
}
|
|
|
|
static PRInt32 AppUnitsPerCSSPixel() { return nsDeviceContext::AppUnitsPerCSSPixel(); }
|
|
PRInt32 AppUnitsPerDevPixel() const { return mDeviceContext->AppUnitsPerDevPixel(); }
|
|
static PRInt32 AppUnitsPerCSSInch() { return nsDeviceContext::AppUnitsPerCSSInch(); }
|
|
|
|
static nscoord CSSPixelsToAppUnits(PRInt32 aPixels)
|
|
{ return NSIntPixelsToAppUnits(aPixels,
|
|
nsDeviceContext::AppUnitsPerCSSPixel()); }
|
|
|
|
static nscoord CSSPixelsToAppUnits(float aPixels)
|
|
{ return NSFloatPixelsToAppUnits(aPixels,
|
|
float(nsDeviceContext::AppUnitsPerCSSPixel())); }
|
|
|
|
static PRInt32 AppUnitsToIntCSSPixels(nscoord aAppUnits)
|
|
{ return NSAppUnitsToIntPixels(aAppUnits,
|
|
float(nsDeviceContext::AppUnitsPerCSSPixel())); }
|
|
|
|
static float AppUnitsToFloatCSSPixels(nscoord aAppUnits)
|
|
{ return NSAppUnitsToFloatPixels(aAppUnits,
|
|
float(nsDeviceContext::AppUnitsPerCSSPixel())); }
|
|
|
|
nscoord DevPixelsToAppUnits(PRInt32 aPixels) const
|
|
{ return NSIntPixelsToAppUnits(aPixels,
|
|
mDeviceContext->AppUnitsPerDevPixel()); }
|
|
|
|
PRInt32 AppUnitsToDevPixels(nscoord aAppUnits) const
|
|
{ return NSAppUnitsToIntPixels(aAppUnits,
|
|
float(mDeviceContext->AppUnitsPerDevPixel())); }
|
|
|
|
PRInt32 CSSPixelsToDevPixels(PRInt32 aPixels)
|
|
{ return AppUnitsToDevPixels(CSSPixelsToAppUnits(aPixels)); }
|
|
|
|
float CSSPixelsToDevPixels(float aPixels)
|
|
{
|
|
return NSAppUnitsToFloatPixels(CSSPixelsToAppUnits(aPixels),
|
|
float(mDeviceContext->AppUnitsPerDevPixel()));
|
|
}
|
|
|
|
PRInt32 DevPixelsToIntCSSPixels(PRInt32 aPixels)
|
|
{ return AppUnitsToIntCSSPixels(DevPixelsToAppUnits(aPixels)); }
|
|
|
|
float DevPixelsToFloatCSSPixels(PRInt32 aPixels)
|
|
{ return AppUnitsToFloatCSSPixels(DevPixelsToAppUnits(aPixels)); }
|
|
|
|
// If there is a remainder, it is rounded to nearest app units.
|
|
nscoord GfxUnitsToAppUnits(gfxFloat aGfxUnits) const
|
|
{ return mDeviceContext->GfxUnitsToAppUnits(aGfxUnits); }
|
|
|
|
gfxFloat AppUnitsToGfxUnits(nscoord aAppUnits) const
|
|
{ return mDeviceContext->AppUnitsToGfxUnits(aAppUnits); }
|
|
|
|
gfxRect AppUnitsToGfxUnits(const nsRect& aAppRect) const
|
|
{ return gfxRect(AppUnitsToGfxUnits(aAppRect.x),
|
|
AppUnitsToGfxUnits(aAppRect.y),
|
|
AppUnitsToGfxUnits(aAppRect.width),
|
|
AppUnitsToGfxUnits(aAppRect.height)); }
|
|
|
|
static nscoord CSSTwipsToAppUnits(float aTwips)
|
|
{ return NSToCoordRoundWithClamp(
|
|
nsDeviceContext::AppUnitsPerCSSInch() * NS_TWIPS_TO_INCHES(aTwips)); }
|
|
|
|
// Margin-specific version, since they often need TwipsToAppUnits
|
|
static nsMargin CSSTwipsToAppUnits(const nsIntMargin &marginInTwips)
|
|
{ return nsMargin(CSSTwipsToAppUnits(float(marginInTwips.left)),
|
|
CSSTwipsToAppUnits(float(marginInTwips.top)),
|
|
CSSTwipsToAppUnits(float(marginInTwips.right)),
|
|
CSSTwipsToAppUnits(float(marginInTwips.bottom))); }
|
|
|
|
static nscoord CSSPointsToAppUnits(float aPoints)
|
|
{ return NSToCoordRound(aPoints * nsDeviceContext::AppUnitsPerCSSInch() /
|
|
POINTS_PER_INCH_FLOAT); }
|
|
|
|
nscoord RoundAppUnitsToNearestDevPixels(nscoord aAppUnits) const
|
|
{ return DevPixelsToAppUnits(AppUnitsToDevPixels(aAppUnits)); }
|
|
|
|
struct ScrollbarStyles {
|
|
// Always one of NS_STYLE_OVERFLOW_SCROLL, NS_STYLE_OVERFLOW_HIDDEN,
|
|
// or NS_STYLE_OVERFLOW_AUTO.
|
|
PRUint8 mHorizontal, mVertical;
|
|
ScrollbarStyles(PRUint8 h, PRUint8 v) : mHorizontal(h), mVertical(v) {}
|
|
ScrollbarStyles() {}
|
|
PRBool operator==(const ScrollbarStyles& aStyles) const {
|
|
return aStyles.mHorizontal == mHorizontal && aStyles.mVertical == mVertical;
|
|
}
|
|
PRBool operator!=(const ScrollbarStyles& aStyles) const {
|
|
return aStyles.mHorizontal != mHorizontal || aStyles.mVertical != mVertical;
|
|
}
|
|
};
|
|
void SetViewportOverflowOverride(PRUint8 aX, PRUint8 aY)
|
|
{
|
|
mViewportStyleOverflow.mHorizontal = aX;
|
|
mViewportStyleOverflow.mVertical = aY;
|
|
}
|
|
ScrollbarStyles GetViewportOverflowOverride()
|
|
{
|
|
return mViewportStyleOverflow;
|
|
}
|
|
|
|
/**
|
|
* Set and get methods for controlling the background drawing
|
|
*/
|
|
PRBool GetBackgroundImageDraw() const { return mDrawImageBackground; }
|
|
void SetBackgroundImageDraw(PRBool aCanDraw)
|
|
{
|
|
NS_ASSERTION(!(aCanDraw & ~1), "Value must be true or false");
|
|
mDrawImageBackground = aCanDraw;
|
|
}
|
|
|
|
PRBool GetBackgroundColorDraw() const { return mDrawColorBackground; }
|
|
void SetBackgroundColorDraw(PRBool aCanDraw)
|
|
{
|
|
NS_ASSERTION(!(aCanDraw & ~1), "Value must be true or false");
|
|
mDrawColorBackground = aCanDraw;
|
|
}
|
|
|
|
#ifdef IBMBIDI
|
|
/**
|
|
* Check if bidi enabled (set depending on the presence of RTL
|
|
* characters or when default directionality is RTL).
|
|
* If enabled, we should apply the Unicode Bidi Algorithm
|
|
*
|
|
* @lina 07/12/2000
|
|
*/
|
|
virtual PRBool BidiEnabledExternal() const { return BidiEnabledInternal(); }
|
|
PRBool BidiEnabledInternal() const { return Document()->GetBidiEnabled(); }
|
|
#ifdef _IMPL_NS_LAYOUT
|
|
PRBool BidiEnabled() const { return BidiEnabledInternal(); }
|
|
#else
|
|
PRBool BidiEnabled() const { return BidiEnabledExternal(); }
|
|
#endif
|
|
|
|
/**
|
|
* Set bidi enabled. This means we should apply the Unicode Bidi Algorithm
|
|
*
|
|
* @lina 07/12/2000
|
|
*/
|
|
NS_HIDDEN_(void) SetBidiEnabled() const;
|
|
|
|
/**
|
|
* Set visual or implicit mode into the pres context.
|
|
*
|
|
* Visual directionality is a presentation method that displays text
|
|
* as if it were a uni-directional, according to the primary display
|
|
* direction only.
|
|
*
|
|
* Implicit directionality is a presentation method in which the
|
|
* direction is determined by the Bidi algorithm according to the
|
|
* category of the characters and the category of the adjacent
|
|
* characters, and according to their primary direction.
|
|
*
|
|
* @lina 05/02/2000
|
|
*/
|
|
void SetVisualMode(PRBool aIsVisual)
|
|
{
|
|
NS_ASSERTION(!(aIsVisual & ~1), "Value must be true or false");
|
|
mIsVisual = aIsVisual;
|
|
}
|
|
|
|
/**
|
|
* Check whether the content should be treated as visual.
|
|
*
|
|
* @lina 05/02/2000
|
|
*/
|
|
PRBool IsVisualMode() const { return mIsVisual; }
|
|
|
|
//Mohamed
|
|
|
|
/**
|
|
* Get a Bidi presentation utilities object
|
|
*/
|
|
NS_HIDDEN_(nsBidiPresUtils*) GetBidiUtils();
|
|
|
|
/**
|
|
* Set the Bidi options for the presentation context
|
|
*/
|
|
NS_HIDDEN_(void) SetBidi(PRUint32 aBidiOptions,
|
|
PRBool aForceRestyle = PR_FALSE);
|
|
|
|
/**
|
|
* Get the Bidi options for the presentation context
|
|
* Not inline so consumers of nsPresContext are not forced to
|
|
* include nsIDocument.
|
|
*/
|
|
NS_HIDDEN_(PRUint32) GetBidi() const;
|
|
|
|
PRUint32 GetBidiMemoryUsed();
|
|
#else
|
|
PRUint32 GetBidiMemoryUsed() { return 0; }
|
|
#endif // IBMBIDI
|
|
|
|
/**
|
|
* Render only Selection
|
|
*/
|
|
void SetIsRenderingOnlySelection(PRBool aResult)
|
|
{
|
|
NS_ASSERTION(!(aResult & ~1), "Value must be true or false");
|
|
mIsRenderingOnlySelection = aResult;
|
|
}
|
|
|
|
PRBool IsRenderingOnlySelection() const { return mIsRenderingOnlySelection; }
|
|
|
|
NS_HIDDEN_(PRBool) IsTopLevelWindowInactive();
|
|
|
|
/*
|
|
* Obtain a native them for rendering our widgets (both form controls and html)
|
|
*/
|
|
NS_HIDDEN_(nsITheme*) GetTheme();
|
|
|
|
/*
|
|
* Notify the pres context that the theme has changed. An internal switch
|
|
* means it's one of our Mozilla themes that changed (e.g., Modern to Classic).
|
|
* Otherwise, the OS is telling us that the native theme for the platform
|
|
* has changed.
|
|
*/
|
|
NS_HIDDEN_(void) ThemeChanged();
|
|
|
|
/*
|
|
* Notify the pres context that a system color has changed
|
|
*/
|
|
NS_HIDDEN_(void) SysColorChanged();
|
|
|
|
/** Printing methods below should only be used for Medium() == print **/
|
|
NS_HIDDEN_(void) SetPrintSettings(nsIPrintSettings *aPrintSettings);
|
|
|
|
nsIPrintSettings* GetPrintSettings() { return mPrintSettings; }
|
|
|
|
/* Accessor for table of frame properties */
|
|
FramePropertyTable* PropertyTable() { return &mPropertyTable; }
|
|
|
|
/* Helper function that ensures that this prescontext is shown in its
|
|
docshell if it's the most recent prescontext for the docshell. Returns
|
|
whether the prescontext is now being shown.
|
|
*/
|
|
NS_HIDDEN_(PRBool) EnsureVisible();
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
NS_HIDDEN_(void) CountReflows(const char * aName,
|
|
nsIFrame * aFrame);
|
|
#endif
|
|
|
|
/**
|
|
* This table maps border-width enums 'thin', 'medium', 'thick'
|
|
* to actual nscoord values.
|
|
*/
|
|
const nscoord* GetBorderWidthTable() { return mBorderWidthTable; }
|
|
|
|
PRBool IsDynamic() { return (mType == eContext_PageLayout || mType == eContext_Galley); }
|
|
PRBool IsScreen() { return (mMedium == nsGkAtoms::screen ||
|
|
mType == eContext_PageLayout ||
|
|
mType == eContext_PrintPreview); }
|
|
|
|
// Is this presentation in a chrome docshell?
|
|
PRBool IsChrome() const
|
|
{
|
|
return mIsChromeIsCached ? mIsChrome : IsChromeSlow();
|
|
}
|
|
|
|
virtual void InvalidateIsChromeCacheExternal();
|
|
void InvalidateIsChromeCacheInternal() { mIsChromeIsCached = PR_FALSE; }
|
|
#ifdef _IMPL_NS_LAYOUT
|
|
void InvalidateIsChromeCache()
|
|
{ InvalidateIsChromeCacheInternal(); }
|
|
#else
|
|
void InvalidateIsChromeCache()
|
|
{ InvalidateIsChromeCacheExternal(); }
|
|
#endif
|
|
|
|
// Public API for native theme code to get style internals.
|
|
virtual PRBool HasAuthorSpecifiedRules(nsIFrame *aFrame, PRUint32 ruleTypeMask) const;
|
|
|
|
// Is it OK to let the page specify colors and backgrounds?
|
|
PRBool UseDocumentColors() const {
|
|
return GetCachedBoolPref(kPresContext_UseDocumentColors) || IsChrome();
|
|
}
|
|
|
|
PRBool SupressingResizeReflow() const { return mSupressResizeReflow; }
|
|
|
|
virtual NS_HIDDEN_(gfxUserFontSet*) GetUserFontSetExternal();
|
|
NS_HIDDEN_(gfxUserFontSet*) GetUserFontSetInternal();
|
|
#ifdef _IMPL_NS_LAYOUT
|
|
gfxUserFontSet* GetUserFontSet() { return GetUserFontSetInternal(); }
|
|
#else
|
|
gfxUserFontSet* GetUserFontSet() { return GetUserFontSetExternal(); }
|
|
#endif
|
|
|
|
void FlushUserFontSet();
|
|
void RebuildUserFontSet(); // asynchronously
|
|
|
|
// Should be called whenever the set of fonts available in the user
|
|
// font set changes (e.g., because a new font loads, or because the
|
|
// user font set is changed and fonts become unavailable).
|
|
void UserFontSetUpdated();
|
|
|
|
// Ensure that it is safe to hand out CSS rules outside the layout
|
|
// engine by ensuring that all CSS style sheets have unique inners
|
|
// and, if necessary, synchronously rebuilding all style data.
|
|
// Returns true on success and false on failure (not safe).
|
|
PRBool EnsureSafeToHandOutCSSRules();
|
|
|
|
void NotifyInvalidation(const nsRect& aRect, PRUint32 aFlags);
|
|
void NotifyDidPaintForSubtree();
|
|
void FireDOMPaintEvent();
|
|
|
|
PRBool IsDOMPaintEventPending() {
|
|
return !mInvalidateRequests.mRequests.IsEmpty();
|
|
}
|
|
void ClearMozAfterPaintEvents() {
|
|
mInvalidateRequests.mRequests.Clear();
|
|
}
|
|
|
|
PRBool IsProcessingRestyles() const {
|
|
return mProcessingRestyles;
|
|
}
|
|
|
|
void SetProcessingRestyles(PRBool aProcessing) {
|
|
NS_ASSERTION(aProcessing != PRBool(mProcessingRestyles),
|
|
"should never nest");
|
|
mProcessingRestyles = aProcessing;
|
|
}
|
|
|
|
PRBool IsProcessingAnimationStyleChange() const {
|
|
return mProcessingAnimationStyleChange;
|
|
}
|
|
|
|
void SetProcessingAnimationStyleChange(PRBool aProcessing) {
|
|
NS_ASSERTION(aProcessing != PRBool(mProcessingAnimationStyleChange),
|
|
"should never nest");
|
|
mProcessingAnimationStyleChange = aProcessing;
|
|
}
|
|
|
|
/**
|
|
* Notify the prescontext that the presshell is about to reflow a reflow root.
|
|
* The single argument indicates whether this reflow should be interruptible.
|
|
* If aInterruptible is false then CheckForInterrupt and HasPendingInterrupt
|
|
* will always return false. If aInterruptible is true then CheckForInterrupt
|
|
* will return true when a pending event is detected. This is for use by the
|
|
* presshell only. Reflow code wanting to prevent interrupts should use
|
|
* InterruptPreventer.
|
|
*/
|
|
void ReflowStarted(PRBool aInterruptible);
|
|
|
|
/**
|
|
* A class that can be used to temporarily disable reflow interruption.
|
|
*/
|
|
class InterruptPreventer;
|
|
friend class InterruptPreventer;
|
|
class NS_STACK_CLASS InterruptPreventer {
|
|
public:
|
|
InterruptPreventer(nsPresContext* aCtx) :
|
|
mCtx(aCtx),
|
|
mInterruptsEnabled(aCtx->mInterruptsEnabled),
|
|
mHasPendingInterrupt(aCtx->mHasPendingInterrupt)
|
|
{
|
|
mCtx->mInterruptsEnabled = PR_FALSE;
|
|
mCtx->mHasPendingInterrupt = PR_FALSE;
|
|
}
|
|
~InterruptPreventer() {
|
|
mCtx->mInterruptsEnabled = mInterruptsEnabled;
|
|
mCtx->mHasPendingInterrupt = mHasPendingInterrupt;
|
|
}
|
|
|
|
private:
|
|
nsPresContext* mCtx;
|
|
PRBool mInterruptsEnabled;
|
|
PRBool mHasPendingInterrupt;
|
|
};
|
|
|
|
/**
|
|
* Check for interrupts. This may return true if a pending event is
|
|
* detected. Once it has returned true, it will keep returning true
|
|
* until ReflowStarted is called. In all cases where this returns true,
|
|
* the passed-in frame (which should be the frame whose reflow will be
|
|
* interrupted if true is returned) will be passed to
|
|
* nsIPresShell::FrameNeedsToContinueReflow.
|
|
*/
|
|
PRBool CheckForInterrupt(nsIFrame* aFrame);
|
|
/**
|
|
* Returns true if CheckForInterrupt has returned true since the last
|
|
* ReflowStarted call. Cannot itself trigger an interrupt check.
|
|
*/
|
|
PRBool HasPendingInterrupt() { return mHasPendingInterrupt; }
|
|
|
|
/**
|
|
* If we have a presshell, and if the given content's current
|
|
* document is the same as our presshell's document, return the
|
|
* content's primary frame. Otherwise, return null. Only use this
|
|
* if you care about which presshell the primary frame is in.
|
|
*/
|
|
nsIFrame* GetPrimaryFrameFor(nsIContent* aContent) {
|
|
NS_PRECONDITION(aContent, "Don't do that");
|
|
if (GetPresShell() &&
|
|
GetPresShell()->GetDocument() == aContent->GetCurrentDoc()) {
|
|
return aContent->GetPrimaryFrame();
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
void NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
PropertyTable()->DeleteAllFor(aFrame);
|
|
}
|
|
inline void ForgetUpdatePluginGeometryFrame(nsIFrame* aFrame);
|
|
|
|
PRBool GetContainsUpdatePluginGeometryFrame()
|
|
{
|
|
return mContainsUpdatePluginGeometryFrame;
|
|
}
|
|
|
|
void SetContainsUpdatePluginGeometryFrame(PRBool aValue)
|
|
{
|
|
mContainsUpdatePluginGeometryFrame = aValue;
|
|
}
|
|
|
|
PRBool MayHaveFixedBackgroundFrames() { return mMayHaveFixedBackgroundFrames; }
|
|
void SetHasFixedBackgroundFrame() { mMayHaveFixedBackgroundFrames = PR_TRUE; }
|
|
|
|
PRUint32 EstimateMemoryUsed() {
|
|
PRUint32 result = 0;
|
|
|
|
result += sizeof(nsPresContext);
|
|
result += GetBidiMemoryUsed();
|
|
|
|
return result;
|
|
}
|
|
|
|
PRBool IsRootContentDocument();
|
|
|
|
protected:
|
|
friend class nsRunnableMethod<nsPresContext>;
|
|
NS_HIDDEN_(void) ThemeChangedInternal();
|
|
NS_HIDDEN_(void) SysColorChangedInternal();
|
|
|
|
NS_HIDDEN_(void) SetImgAnimations(nsIContent *aParent, PRUint16 aMode);
|
|
#ifdef MOZ_SMIL
|
|
NS_HIDDEN_(void) SetSMILAnimations(nsIDocument *aDoc, PRUint16 aNewMode,
|
|
PRUint16 aOldMode);
|
|
#endif // MOZ_SMIL
|
|
NS_HIDDEN_(void) GetDocumentColorPreferences();
|
|
|
|
NS_HIDDEN_(void) PreferenceChanged(const char* aPrefName);
|
|
static NS_HIDDEN_(int) PrefChangedCallback(const char*, void*);
|
|
|
|
NS_HIDDEN_(void) UpdateAfterPreferencesChanged();
|
|
static NS_HIDDEN_(void) PrefChangedUpdateTimerCallback(nsITimer *aTimer, void *aClosure);
|
|
|
|
NS_HIDDEN_(void) GetUserPreferences();
|
|
NS_HIDDEN_(void) GetFontPreferences();
|
|
|
|
NS_HIDDEN_(void) UpdateCharSet(const nsAFlatCString& aCharSet);
|
|
|
|
void InvalidateThebesLayers();
|
|
void AppUnitsPerDevPixelChanged();
|
|
|
|
PRBool MayHavePaintEventListener();
|
|
|
|
void HandleRebuildUserFontSet() {
|
|
mPostedFlushUserFontSet = PR_FALSE;
|
|
FlushUserFontSet();
|
|
}
|
|
|
|
PRBool HavePendingInputEvent();
|
|
|
|
// Can't be inline because we can't include nsStyleSet.h.
|
|
PRBool HasCachedStyleData();
|
|
|
|
PRBool IsChromeSlow() const;
|
|
|
|
// IMPORTANT: The ownership implicit in the following member variables
|
|
// has been explicitly checked. If you add any members to this class,
|
|
// please make the ownership explicit (pinkerton, scc).
|
|
|
|
nsPresContextType mType;
|
|
nsIPresShell* mShell; // [WEAK]
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
nsDeviceContext* mDeviceContext; // [STRONG] could be weak, but
|
|
// better safe than sorry.
|
|
// Cannot reintroduce cycles
|
|
// since there is no dependency
|
|
// from gfx back to layout.
|
|
nsEventStateManager* mEventManager; // [STRONG]
|
|
nsILookAndFeel* mLookAndFeel; // [STRONG]
|
|
nsRefPtr<nsRefreshDriver> mRefreshDriver;
|
|
nsRefPtr<nsTransitionManager> mTransitionManager;
|
|
nsRefPtr<nsAnimationManager> mAnimationManager;
|
|
nsIAtom* mMedium; // initialized by subclass ctors;
|
|
// weak pointer to static atom
|
|
|
|
nsILinkHandler* mLinkHandler; // [WEAK]
|
|
|
|
// Formerly mLangGroup; moving from charset-oriented langGroup to
|
|
// maintaining actual language settings everywhere (see bug 524107).
|
|
// This may in fact hold a langGroup such as x-western rather than
|
|
// a specific language, however (e.g, if it is inferred from the
|
|
// charset rather than explicitly specified as a lang attribute).
|
|
nsIAtom* mLanguage; // [STRONG]
|
|
|
|
nsRefPtrHashtable<nsVoidPtrHashKey, nsImageLoader>
|
|
mImageLoaders[IMAGE_LOAD_TYPE_COUNT];
|
|
|
|
nsWeakPtr mContainer;
|
|
|
|
PRCList mDOMMediaQueryLists;
|
|
|
|
PRInt32 mMinFontSize; // Min font size, defaults to 0
|
|
float mTextZoom; // Text zoom, defaults to 1.0
|
|
float mFullZoom; // Page zoom, defaults to 1.0
|
|
|
|
PRInt32 mCurAppUnitsPerDevPixel;
|
|
PRInt32 mAutoQualityMinFontSizePixelsPref;
|
|
|
|
#ifdef IBMBIDI
|
|
nsAutoPtr<nsBidiPresUtils> mBidiUtils;
|
|
#endif
|
|
|
|
nsCOMPtr<nsITheme> mTheme;
|
|
nsCOMPtr<nsILanguageAtomService> mLangService;
|
|
nsCOMPtr<nsIPrintSettings> mPrintSettings;
|
|
nsCOMPtr<nsITimer> mPrefChangedTimer;
|
|
|
|
FramePropertyTable mPropertyTable;
|
|
|
|
nsInvalidateRequestList mInvalidateRequests;
|
|
|
|
// container for per-context fonts (downloadable, SVG, etc.)
|
|
nsUserFontSet* mUserFontSet;
|
|
|
|
PRInt32 mFontScaler;
|
|
nscoord mMinimumFontSizePref;
|
|
|
|
nsRect mVisibleArea;
|
|
nsSize mPageSize;
|
|
float mPageScale;
|
|
float mPPScale;
|
|
|
|
nscolor mDefaultColor;
|
|
nscolor mBackgroundColor;
|
|
|
|
nscolor mLinkColor;
|
|
nscolor mActiveLinkColor;
|
|
nscolor mVisitedLinkColor;
|
|
|
|
nscolor mFocusBackgroundColor;
|
|
nscolor mFocusTextColor;
|
|
|
|
nscolor mBodyTextColor;
|
|
|
|
ScrollbarStyles mViewportStyleOverflow;
|
|
PRUint8 mFocusRingWidth;
|
|
|
|
PRUint16 mImageAnimationMode;
|
|
PRUint16 mImageAnimationModePref;
|
|
|
|
nsFont mDefaultVariableFont;
|
|
nsFont mDefaultFixedFont;
|
|
nsFont mDefaultSerifFont;
|
|
nsFont mDefaultSansSerifFont;
|
|
nsFont mDefaultMonospaceFont;
|
|
nsFont mDefaultCursiveFont;
|
|
nsFont mDefaultFantasyFont;
|
|
|
|
nscoord mBorderWidthTable[3];
|
|
|
|
PRUint32 mInterruptChecksToSkip;
|
|
|
|
mozilla::TimeStamp mReflowStartTime;
|
|
|
|
unsigned mHasPendingInterrupt : 1;
|
|
unsigned mInterruptsEnabled : 1;
|
|
unsigned mUseDocumentFonts : 1;
|
|
unsigned mUseDocumentColors : 1;
|
|
unsigned mUnderlineLinks : 1;
|
|
unsigned mSendAfterPaintToContent : 1;
|
|
unsigned mUseFocusColors : 1;
|
|
unsigned mFocusRingOnAnything : 1;
|
|
unsigned mFocusRingStyle : 1;
|
|
unsigned mDrawImageBackground : 1;
|
|
unsigned mDrawColorBackground : 1;
|
|
unsigned mNeverAnimate : 1;
|
|
unsigned mIsRenderingOnlySelection : 1;
|
|
unsigned mPaginated : 1;
|
|
unsigned mCanPaginatedScroll : 1;
|
|
unsigned mDoScaledTwips : 1;
|
|
unsigned mEnableJapaneseTransform : 1;
|
|
unsigned mIsRootPaginatedDocument : 1;
|
|
unsigned mPrefBidiDirection : 1;
|
|
unsigned mPrefScrollbarSide : 2;
|
|
unsigned mPendingSysColorChanged : 1;
|
|
unsigned mPendingThemeChanged : 1;
|
|
unsigned mPendingMediaFeatureValuesChanged : 1;
|
|
unsigned mPrefChangePendingNeedsReflow : 1;
|
|
unsigned mMayHaveFixedBackgroundFrames : 1;
|
|
|
|
// Is the current mUserFontSet valid?
|
|
unsigned mUserFontSetDirty : 1;
|
|
// Has GetUserFontSet() been called?
|
|
unsigned mGetUserFontSetCalled : 1;
|
|
// Do we currently have an event posted to call FlushUserFontSet?
|
|
unsigned mPostedFlushUserFontSet : 1;
|
|
|
|
// resize reflow is suppressed when the only change has been to zoom
|
|
// the document rather than to change the document's dimensions
|
|
unsigned mSupressResizeReflow : 1;
|
|
|
|
unsigned mIsVisual : 1;
|
|
|
|
unsigned mProcessingRestyles : 1;
|
|
unsigned mProcessingAnimationStyleChange : 1;
|
|
|
|
unsigned mContainsUpdatePluginGeometryFrame : 1;
|
|
unsigned mFireAfterPaintEvents : 1;
|
|
|
|
// Cache whether we are chrome or not because it is expensive.
|
|
// mIsChromeIsCached tells us if mIsChrome is valid or we need to get the
|
|
// value the slow way.
|
|
mutable unsigned mIsChromeIsCached : 1;
|
|
mutable unsigned mIsChrome : 1;
|
|
|
|
#ifdef DEBUG
|
|
PRBool mInitialized;
|
|
#endif
|
|
|
|
|
|
protected:
|
|
|
|
virtual ~nsPresContext() NS_HIDDEN;
|
|
|
|
// these are private, use the list in nsFont.h if you want a public list
|
|
enum {
|
|
eDefaultFont_Variable,
|
|
eDefaultFont_Fixed,
|
|
eDefaultFont_Serif,
|
|
eDefaultFont_SansSerif,
|
|
eDefaultFont_Monospace,
|
|
eDefaultFont_Cursive,
|
|
eDefaultFont_Fantasy,
|
|
eDefaultFont_COUNT
|
|
};
|
|
|
|
#ifdef DEBUG
|
|
private:
|
|
friend struct nsAutoLayoutPhase;
|
|
PRUint32 mLayoutPhaseCount[eLayoutPhase_COUNT];
|
|
public:
|
|
PRUint32 LayoutPhaseCount(nsLayoutPhase aPhase) {
|
|
return mLayoutPhaseCount[aPhase];
|
|
}
|
|
#endif
|
|
|
|
};
|
|
|
|
class nsRootPresContext : public nsPresContext {
|
|
public:
|
|
nsRootPresContext(nsIDocument* aDocument, nsPresContextType aType) NS_HIDDEN;
|
|
virtual ~nsRootPresContext();
|
|
|
|
/**
|
|
* Ensure that NotifyDidPaintForSubtree is eventually called on this
|
|
* object after a timeout.
|
|
*/
|
|
void EnsureEventualDidPaintEvent();
|
|
|
|
void CancelDidPaintTimer()
|
|
{
|
|
if (mNotifyDidPaintTimer) {
|
|
mNotifyDidPaintTimer->Cancel();
|
|
mNotifyDidPaintTimer = nsnull;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Registers a plugin to receive geometry updates (position and clip
|
|
* region) so it can update its widget.
|
|
* Callers must call UnregisterPluginForGeometryUpdates before
|
|
* the aPlugin frame is destroyed.
|
|
*/
|
|
void RegisterPluginForGeometryUpdates(nsObjectFrame* aPlugin);
|
|
/**
|
|
* Stops a plugin receiving geometry updates (position and clip
|
|
* region). If the plugin was not already registered, this does
|
|
* nothing.
|
|
*/
|
|
void UnregisterPluginForGeometryUpdates(nsObjectFrame* aPlugin);
|
|
|
|
/**
|
|
* Iterate through all plugins that are registered for geometry updates
|
|
* and update their position and clip region to match the current frame
|
|
* tree.
|
|
*/
|
|
void UpdatePluginGeometry();
|
|
|
|
/**
|
|
* Iterate through all plugins that are registered for geometry updates
|
|
* and compute their position and clip region according to the
|
|
* current frame tree. Only frames at or under aChangedRoot can have
|
|
* changed their geometry. The computed positions and clip regions are
|
|
* appended to aConfigurations.
|
|
*/
|
|
void GetPluginGeometryUpdates(nsIFrame* aChangedRoot,
|
|
nsTArray<nsIWidget::Configuration>* aConfigurations);
|
|
|
|
/**
|
|
* When all geometry updates have been applied, call this function
|
|
* in case the nsObjectFrames have work to do after the widgets
|
|
* have been updated.
|
|
*/
|
|
void DidApplyPluginGeometryUpdates();
|
|
|
|
virtual PRBool IsRoot() { return PR_TRUE; }
|
|
|
|
/**
|
|
* This method is called off an event to force the plugin geometry to
|
|
* be updated. First we try to paint, since updating plugin geometry
|
|
* during paint is best for keeping plugins in sync with content.
|
|
* But we also force geometry updates in case painting doesn't work.
|
|
*/
|
|
void SynchronousPluginGeometryUpdate();
|
|
|
|
/**
|
|
* Call this after reflow and scrolling to ensure that the geometry
|
|
* of any windowed plugins is updated. aFrame is the root of the
|
|
* frame subtree whose geometry has changed.
|
|
*/
|
|
void RequestUpdatePluginGeometry(nsIFrame* aFrame);
|
|
|
|
/**
|
|
* Call this when a frame is being destroyed and
|
|
* mContainsUpdatePluginGeometryFrame is set in the frame's prescontext.
|
|
*/
|
|
void RootForgetUpdatePluginGeometryFrame(nsIFrame* aFrame);
|
|
|
|
/**
|
|
* Call this when a document is going to no longer be valid for plugin updates
|
|
* (say by going into the bfcache). If mContainsUpdatePluginGeometryFrame is
|
|
* set in the prescontext then it will be cleared along with
|
|
* mUpdatePluginGeometryForFrame.
|
|
*/
|
|
void RootForgetUpdatePluginGeometryFrameForPresContext(nsPresContext* aPresContext);
|
|
|
|
/**
|
|
* Increment DOM-modification generation counter to indicate that
|
|
* the DOM has changed in a way that might lead to style changes/
|
|
* reflows/frame creation and destruction.
|
|
*/
|
|
void IncrementDOMGeneration() { mDOMGeneration++; }
|
|
|
|
/**
|
|
* Get the current DOM generation counter.
|
|
*/
|
|
PRUint32 GetDOMGeneration() { return mDOMGeneration; }
|
|
|
|
private:
|
|
nsCOMPtr<nsITimer> mNotifyDidPaintTimer;
|
|
nsTHashtable<nsPtrHashKey<nsObjectFrame> > mRegisteredPlugins;
|
|
// if mNeedsToUpdatePluginGeometry is set, then this is the frame to
|
|
// use as the root of the subtree to search for plugin updates, or
|
|
// null to use the root frame of this prescontext
|
|
nsIFrame* mUpdatePluginGeometryForFrame;
|
|
PRUint32 mDOMGeneration;
|
|
PRPackedBool mNeedsToUpdatePluginGeometry;
|
|
};
|
|
|
|
inline void
|
|
nsPresContext::ForgetUpdatePluginGeometryFrame(nsIFrame* aFrame)
|
|
{
|
|
if (mContainsUpdatePluginGeometryFrame) {
|
|
nsRootPresContext* rootPC = GetRootPresContext();
|
|
if (rootPC) {
|
|
rootPC->RootForgetUpdatePluginGeometryFrame(aFrame);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
struct nsAutoLayoutPhase {
|
|
nsAutoLayoutPhase(nsPresContext* aPresContext, nsLayoutPhase aPhase)
|
|
: mPresContext(aPresContext), mPhase(aPhase), mCount(0)
|
|
{
|
|
Enter();
|
|
}
|
|
|
|
~nsAutoLayoutPhase()
|
|
{
|
|
Exit();
|
|
NS_ASSERTION(mCount == 0, "imbalanced");
|
|
}
|
|
|
|
void Enter()
|
|
{
|
|
switch (mPhase) {
|
|
case eLayoutPhase_Paint:
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0,
|
|
"recurring into paint");
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0,
|
|
"painting in the middle of reflow");
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0,
|
|
"painting in the middle of frame construction");
|
|
break;
|
|
case eLayoutPhase_Reflow:
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0,
|
|
"reflowing in the middle of a paint");
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0,
|
|
"recurring into reflow");
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0,
|
|
"reflowing in the middle of frame construction");
|
|
break;
|
|
case eLayoutPhase_FrameC:
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0,
|
|
"constructing frames in the middle of a paint");
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0,
|
|
"constructing frames in the middle of reflow");
|
|
NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0,
|
|
"recurring into frame construction");
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"constructing frames and scripts are not blocked");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
++(mPresContext->mLayoutPhaseCount[mPhase]);
|
|
++mCount;
|
|
}
|
|
|
|
void Exit()
|
|
{
|
|
NS_ASSERTION(mCount > 0 && mPresContext->mLayoutPhaseCount[mPhase] > 0,
|
|
"imbalanced");
|
|
--(mPresContext->mLayoutPhaseCount[mPhase]);
|
|
--mCount;
|
|
}
|
|
|
|
private:
|
|
nsPresContext *mPresContext;
|
|
nsLayoutPhase mPhase;
|
|
PRUint32 mCount;
|
|
};
|
|
|
|
#define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
|
|
nsAutoLayoutPhase autoLayoutPhase((pc_), (eLayoutPhase_##phase_))
|
|
#define LAYOUT_PHASE_TEMP_EXIT() \
|
|
PR_BEGIN_MACRO \
|
|
autoLayoutPhase.Exit(); \
|
|
PR_END_MACRO
|
|
#define LAYOUT_PHASE_TEMP_REENTER() \
|
|
PR_BEGIN_MACRO \
|
|
autoLayoutPhase.Enter(); \
|
|
PR_END_MACRO
|
|
|
|
#else
|
|
|
|
#define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
|
|
PR_BEGIN_MACRO PR_END_MACRO
|
|
#define LAYOUT_PHASE_TEMP_EXIT() \
|
|
PR_BEGIN_MACRO PR_END_MACRO
|
|
#define LAYOUT_PHASE_TEMP_REENTER() \
|
|
PR_BEGIN_MACRO PR_END_MACRO
|
|
|
|
#endif
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
|
|
#define DO_GLOBAL_REFLOW_COUNT(_name) \
|
|
aPresContext->CountReflows((_name), (nsIFrame*)this);
|
|
#else
|
|
#define DO_GLOBAL_REFLOW_COUNT(_name)
|
|
#endif // MOZ_REFLOW_PERF
|
|
|
|
#endif /* nsPresContext_h___ */
|