mirror of
https://github.com/classilla/tenfourfox.git
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1562 lines
50 KiB
C++
1562 lines
50 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* a presentation of a document, part 1 */
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#ifndef nsPresContext_h___
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#define nsPresContext_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/WeakPtr.h"
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#include "nsColor.h"
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#include "nsCoord.h"
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#include "nsCOMPtr.h"
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#include "nsIPresShell.h"
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#include "nsRect.h"
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#include "nsFont.h"
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#include "gfxFontConstants.h"
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#include "nsIAtom.h"
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#include "nsIObserver.h"
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#include "nsITimer.h"
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#include "nsCRT.h"
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#include "FramePropertyTable.h"
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#include "nsGkAtoms.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsChangeHint.h"
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#include <algorithm>
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// This also pulls in gfxTypes.h, which we cannot include directly.
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#include "gfxRect.h"
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#include "nsTArray.h"
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#include "nsAutoPtr.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/AppUnits.h"
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#include "prclist.h"
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#include "nsThreadUtils.h"
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#include "ScrollbarStyles.h"
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#include "nsIMessageManager.h"
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#include "mozilla/RestyleLogging.h"
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#include "Units.h"
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class nsAString;
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class nsIPrintSettings;
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class nsDocShell;
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class nsIDocShell;
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class nsIDocument;
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class nsILanguageAtomService;
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class nsITheme;
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class nsIContent;
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class nsIFrame;
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class nsFrameManager;
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class nsIAtom;
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class nsIRunnable;
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class gfxUserFontEntry;
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class gfxUserFontSet;
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class gfxTextPerfMetrics;
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class nsPluginFrame;
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class nsTransitionManager;
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class nsAnimationManager;
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class nsRefreshDriver;
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class nsIWidget;
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class nsDeviceContext;
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class gfxMissingFontRecorder;
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namespace mozilla {
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class EventStateManager;
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class RestyleManager;
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class CounterStyleManager;
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namespace layers {
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class ContainerLayer;
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class LayerManager;
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} // namespace layers
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} // namespace mozilla
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// supported values for cached bool types
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enum nsPresContext_CachedBoolPrefType {
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kPresContext_UseDocumentFonts = 1,
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kPresContext_UnderlineLinks
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};
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// supported values for cached integer pref types
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enum nsPresContext_CachedIntPrefType {
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kPresContext_ScrollbarSide = 1,
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kPresContext_BidiDirection
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};
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// IDs for the default variable and fixed fonts (not to be changed, see nsFont.h)
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// To be used for Get/SetDefaultFont(). The other IDs in nsFont.h are also supported.
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const uint8_t kPresContext_DefaultVariableFont_ID = 0x00; // kGenericFont_moz_variable
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const uint8_t kPresContext_DefaultFixedFont_ID = 0x01; // kGenericFont_moz_fixed
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#ifdef DEBUG
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struct nsAutoLayoutPhase;
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enum nsLayoutPhase {
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eLayoutPhase_Paint,
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eLayoutPhase_Reflow,
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eLayoutPhase_FrameC,
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eLayoutPhase_COUNT
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};
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#endif
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class nsInvalidateRequestList {
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public:
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struct Request {
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nsRect mRect;
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uint32_t mFlags;
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};
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void TakeFrom(nsInvalidateRequestList* aList)
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{
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mRequests.AppendElements(mozilla::Move(aList->mRequests));
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}
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bool IsEmpty() { return mRequests.IsEmpty(); }
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nsTArray<Request> mRequests;
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};
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/* Used by nsPresContext::HasAuthorSpecifiedRules */
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#define NS_AUTHOR_SPECIFIED_BACKGROUND (1 << 0)
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#define NS_AUTHOR_SPECIFIED_BORDER (1 << 1)
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#define NS_AUTHOR_SPECIFIED_PADDING (1 << 2)
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#define NS_AUTHOR_SPECIFIED_TEXT_SHADOW (1 << 3)
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class nsRootPresContext;
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// An interface for presentation contexts. Presentation contexts are
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// objects that provide an outer context for a presentation shell.
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class nsPresContext : public nsIObserver {
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public:
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typedef mozilla::FramePropertyTable FramePropertyTable;
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typedef mozilla::ScrollbarStyles ScrollbarStyles;
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_NSIOBSERVER
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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NS_DECL_CYCLE_COLLECTION_CLASS(nsPresContext)
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enum nsPresContextType {
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eContext_Galley, // unpaginated screen presentation
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eContext_PrintPreview, // paginated screen presentation
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eContext_Print, // paginated printer presentation
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eContext_PageLayout // paginated & editable.
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};
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nsPresContext(nsIDocument* aDocument, nsPresContextType aType);
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/**
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* Initialize the presentation context from a particular device.
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*/
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nsresult Init(nsDeviceContext* aDeviceContext);
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/**
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* Set the presentation shell that this context is bound to.
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* A presentation context may only be bound to a single shell.
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*/
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void SetShell(nsIPresShell* aShell);
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nsPresContextType Type() const { return mType; }
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/**
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* Get the PresentationShell that this context is bound to.
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*/
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nsIPresShell* PresShell() const
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{
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NS_ASSERTION(mShell, "Null pres shell");
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return mShell;
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}
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nsIPresShell* GetPresShell() const { return mShell; }
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/**
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* Returns the parent prescontext for this one. Returns null if this is a
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* root.
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*/
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nsPresContext* GetParentPresContext();
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/**
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* Returns the prescontext of the toplevel content document that contains
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* this presentation, or null if there isn't one.
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*/
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nsPresContext* GetToplevelContentDocumentPresContext();
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/**
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* Returns the nearest widget for the root frame of this.
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*
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* @param aOffset If non-null the offset from the origin of the root
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* frame's view to the widget's origin (usually positive)
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* expressed in appunits of this will be returned in
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* aOffset.
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*/
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nsIWidget* GetNearestWidget(nsPoint* aOffset = nullptr);
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/**
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* Returns the root widget for this.
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* Note that the widget is a mediater with IME.
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*/
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nsIWidget* GetRootWidget();
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/**
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* Return the presentation context for the root of the view manager
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* hierarchy that contains this presentation context, or nullptr if it can't
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* be found (e.g. it's detached).
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*/
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nsRootPresContext* GetRootPresContext();
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virtual bool IsRoot() { return false; }
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nsIDocument* Document() const
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{
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NS_ASSERTION(!mShell || !mShell->GetDocument() ||
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mShell->GetDocument() == mDocument,
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"nsPresContext doesn't have the same document as nsPresShell!");
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return mDocument;
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}
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#ifdef MOZILLA_INTERNAL_API
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nsStyleSet* StyleSet() { return GetPresShell()->StyleSet(); }
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nsFrameManager* FrameManager()
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{ return PresShell()->FrameManager(); }
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nsCSSFrameConstructor* FrameConstructor()
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{ return PresShell()->FrameConstructor(); }
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nsTransitionManager* TransitionManager() { return mTransitionManager; }
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nsAnimationManager* AnimationManager() { return mAnimationManager; }
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nsRefreshDriver* RefreshDriver() { return mRefreshDriver; }
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mozilla::RestyleManager* RestyleManager() { return mRestyleManager; }
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mozilla::CounterStyleManager* CounterStyleManager() {
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return mCounterStyleManager;
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}
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#endif
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/**
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* Rebuilds all style data by throwing out the old rule tree and
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* building a new one, and additionally applying aExtraHint (which
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* must not contain nsChangeHint_ReconstructFrame) to the root frame.
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* For aRestyleHint, see RestyleManager::RebuildAllStyleData.
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* Also rebuild the user font set and counter style manager.
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*/
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void RebuildAllStyleData(nsChangeHint aExtraHint, nsRestyleHint aRestyleHint);
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/**
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* Just like RebuildAllStyleData, except (1) asynchronous and (2) it
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* doesn't rebuild the user font set.
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*/
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void PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint,
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nsRestyleHint aRestyleHint);
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/**
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* Handle changes in the values of media features (used in media
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* queries).
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*
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* There are three sensible values to use for aRestyleHint:
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* * nsRestyleHint(0) to rebuild style data, with rerunning of
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* selector matching, only if media features have changed
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* * eRestyle_ForceDescendants to force rebuilding of style data (but
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* still only rerun selector matching if media query results have
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* changed). (RebuildAllStyleData always adds
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* eRestyle_ForceDescendants internally, so here we're only using
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* it to distinguish from nsRestyleHint(0) whether we need to call
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* RebuildAllStyleData at all.)
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* * eRestyle_Subtree to force rebuilding of style data with
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* rerunning of selector matching
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*
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* For aChangeHint, see RestyleManager::RebuildAllStyleData. (Passing
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* a nonzero aChangeHint forces rebuilding style data even if
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* nsRestyleHint(0) is passed.)
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*/
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void MediaFeatureValuesChanged(nsRestyleHint aRestyleHint,
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nsChangeHint aChangeHint = nsChangeHint(0));
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void PostMediaFeatureValuesChangedEvent();
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void HandleMediaFeatureValuesChangedEvent();
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void FlushPendingMediaFeatureValuesChanged() {
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if (mPendingMediaFeatureValuesChanged)
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MediaFeatureValuesChanged(nsRestyleHint(0));
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}
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/**
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* Access compatibility mode for this context. This is the same as
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* our document's compatibility mode.
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*/
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nsCompatibility CompatibilityMode() const;
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/**
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* Notify the context that the document's compatibility mode has changed
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*/
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void CompatibilityModeChanged();
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/**
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* Access the image animation mode for this context
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*/
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uint16_t ImageAnimationMode() const { return mImageAnimationMode; }
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virtual void SetImageAnimationModeExternal(uint16_t aMode);
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void SetImageAnimationModeInternal(uint16_t aMode);
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#ifdef MOZILLA_INTERNAL_API
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void SetImageAnimationMode(uint16_t aMode)
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{ SetImageAnimationModeInternal(aMode); }
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#else
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void SetImageAnimationMode(uint16_t aMode)
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{ SetImageAnimationModeExternal(aMode); }
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#endif
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/**
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* Get medium of presentation
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*/
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nsIAtom* Medium() {
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if (!mIsEmulatingMedia)
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return mMedium;
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return mMediaEmulated;
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}
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/*
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* Render the document as if being viewed on a device with the specified
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* media type.
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*/
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void EmulateMedium(const nsAString& aMediaType);
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/*
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* Restore the viewer's natural medium
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*/
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void StopEmulatingMedium();
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void* AllocateFromShell(size_t aSize)
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{
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if (mShell)
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return mShell->AllocateMisc(aSize);
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return nullptr;
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}
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void FreeToShell(size_t aSize, void* aFreeChunk)
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{
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NS_ASSERTION(mShell, "freeing after shutdown");
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if (mShell)
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mShell->FreeMisc(aSize, aFreeChunk);
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}
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/**
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* Get the default font for the given language and generic font ID.
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* If aLanguage is nullptr, the document's language is used.
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*
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* This object is read-only, you must copy the font to modify it.
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*
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* When aFontID is kPresContext_DefaultVariableFontID or
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* kPresContext_DefaultFixedFontID (which equals
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* kGenericFont_moz_fixed, which is used for the -moz-fixed generic),
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* the nsFont returned has its name as a CSS generic family (serif or
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* sans-serif for the former, monospace for the latter), and its size
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* as the default font size for variable or fixed fonts for the
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* language group.
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*
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* For aFontID corresponding to a CSS Generic, the nsFont returned has
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* its name set to that generic font's name, and its size set to
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* the user's preference for font size for that generic and the
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* given language.
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*/
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const nsFont* GetDefaultFont(uint8_t aFontID,
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nsIAtom *aLanguage) const;
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/** Get a cached boolean pref, by its type */
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// * - initially created for bugs 31816, 20760, 22963
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bool GetCachedBoolPref(nsPresContext_CachedBoolPrefType aPrefType) const
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{
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// If called with a constant parameter, the compiler should optimize
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// this switch statement away.
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switch (aPrefType) {
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case kPresContext_UseDocumentFonts:
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return mUseDocumentFonts;
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case kPresContext_UnderlineLinks:
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return mUnderlineLinks;
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default:
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NS_ERROR("Invalid arg passed to GetCachedBoolPref");
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}
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return false;
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}
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/** Get a cached integer pref, by its type */
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// * - initially created for bugs 30910, 61883, 74186, 84398
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int32_t GetCachedIntPref(nsPresContext_CachedIntPrefType aPrefType) const
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{
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// If called with a constant parameter, the compiler should optimize
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// this switch statement away.
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switch (aPrefType) {
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case kPresContext_ScrollbarSide:
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return mPrefScrollbarSide;
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case kPresContext_BidiDirection:
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return mPrefBidiDirection;
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default:
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NS_ERROR("invalid arg passed to GetCachedIntPref");
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}
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return false;
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}
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/**
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* Get the default colors
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*/
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const nscolor DefaultColor() const { return mDefaultColor; }
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const nscolor DefaultBackgroundColor() const { return mBackgroundColor; }
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const nscolor DefaultLinkColor() const { return mLinkColor; }
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const nscolor DefaultActiveLinkColor() const { return mActiveLinkColor; }
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const nscolor DefaultVisitedLinkColor() const { return mVisitedLinkColor; }
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const nscolor FocusBackgroundColor() const { return mFocusBackgroundColor; }
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const nscolor FocusTextColor() const { return mFocusTextColor; }
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/**
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* Body text color, for use in quirks mode only.
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*/
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const nscolor BodyTextColor() const { return mBodyTextColor; }
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void SetBodyTextColor(nscolor aColor) { mBodyTextColor = aColor; }
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bool GetUseFocusColors() const { return mUseFocusColors; }
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uint8_t FocusRingWidth() const { return mFocusRingWidth; }
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bool GetFocusRingOnAnything() const { return mFocusRingOnAnything; }
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uint8_t GetFocusRingStyle() const { return mFocusRingStyle; }
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void SetContainer(nsIDocShell* aContainer);
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virtual nsISupports* GetContainerWeakExternal() const;
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nsISupports* GetContainerWeakInternal() const;
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#ifdef MOZILLA_INTERNAL_API
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nsISupports* GetContainerWeak() const
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{ return GetContainerWeakInternal(); }
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#else
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nsISupports* GetContainerWeak() const
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{ return GetContainerWeakExternal(); }
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#endif
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nsIDocShell* GetDocShell() const;
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/**
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* Detach this pres context - i.e. cancel relevant timers, etc.
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* Only to be used by the DocumentViewer.
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*/
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virtual void Detach();
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/**
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* Get the visible area associated with this presentation context.
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* This is the size of the visible area that is used for
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* presenting the document. The returned value is in the standard
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* nscoord units (as scaled by the device context).
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*/
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nsRect GetVisibleArea() { return mVisibleArea; }
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/**
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* Set the currently visible area. The units for r are standard
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* nscoord units (as scaled by the device context).
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*/
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void SetVisibleArea(const nsRect& r) {
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if (!r.IsEqualEdges(mVisibleArea)) {
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mVisibleArea = r;
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// Visible area does not affect media queries when paginated.
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if (!IsPaginated() && HasCachedStyleData()) {
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mPendingViewportChange = true;
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PostMediaFeatureValuesChangedEvent();
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}
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}
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}
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/**
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* Return true if this presentation context is a paginated
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* context.
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*/
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bool IsPaginated() const { return mPaginated; }
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/**
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* Sets whether the presentation context can scroll for a paginated
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* context.
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*/
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void SetPaginatedScrolling(bool aResult);
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/**
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* Return true if this presentation context can scroll for paginated
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* context.
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*/
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bool HasPaginatedScrolling() const { return mCanPaginatedScroll; }
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/**
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* Get/set the size of a page
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*/
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nsSize GetPageSize() { return mPageSize; }
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void SetPageSize(nsSize aSize) { mPageSize = aSize; }
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/**
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* Get/set whether this document should be treated as having real pages
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* XXX This raises the obvious question of why a document that isn't a page
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* is paginated; there isn't a good reason except history
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*/
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bool IsRootPaginatedDocument() { return mIsRootPaginatedDocument; }
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void SetIsRootPaginatedDocument(bool aIsRootPaginatedDocument)
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{ mIsRootPaginatedDocument = aIsRootPaginatedDocument; }
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/**
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* Get/set the print scaling level; used by nsPageFrame to scale up
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* pages. Set safe to call before reflow, get guaranteed to be set
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* properly after reflow.
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*/
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float GetPageScale() { return mPageScale; }
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void SetPageScale(float aScale) { mPageScale = aScale; }
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/**
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* Get/set the scaling facor to use when rendering the pages for print preview.
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* Only safe to get after print preview set up; safe to set anytime.
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* This is a scaling factor for the display of the print preview. It
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* does not affect layout. It only affects the size of the onscreen pages
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* in print preview.
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* XXX Temporary: see http://wiki.mozilla.org/Gecko:PrintPreview
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*/
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float GetPrintPreviewScale() { return mPPScale; }
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void SetPrintPreviewScale(float aScale) { mPPScale = aScale; }
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nsDeviceContext* DeviceContext() { return mDeviceContext; }
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mozilla::EventStateManager* EventStateManager() { return mEventManager; }
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nsIAtom* GetLanguageFromCharset() const { return mLanguage; }
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already_AddRefed<nsIAtom> GetContentLanguage() const;
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float TextZoom() { return mTextZoom; }
|
|
void SetTextZoom(float aZoom) {
|
|
MOZ_ASSERT(aZoom > 0.0f, "invalid zoom factor");
|
|
if (aZoom == mTextZoom)
|
|
return;
|
|
|
|
mTextZoom = aZoom;
|
|
if (HasCachedStyleData()) {
|
|
// Media queries could have changed, since we changed the meaning
|
|
// of 'em' units in them.
|
|
MediaFeatureValuesChanged(eRestyle_ForceDescendants,
|
|
NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the minimum font size for the specified language. If aLanguage
|
|
* is nullptr, then the document's language is used. This combines
|
|
* the language-specific global preference with the per-presentation
|
|
* base minimum font size.
|
|
*/
|
|
int32_t MinFontSize(nsIAtom *aLanguage) const {
|
|
const LangGroupFontPrefs *prefs = GetFontPrefsForLang(aLanguage);
|
|
return std::max(mBaseMinFontSize, prefs->mMinimumFontSize);
|
|
}
|
|
|
|
/**
|
|
* Get the per-presentation base minimum font size. This size is
|
|
* independent of the language-specific global preference.
|
|
*/
|
|
int32_t BaseMinFontSize() const {
|
|
return mBaseMinFontSize;
|
|
}
|
|
|
|
/**
|
|
* Set the per-presentation base minimum font size. This size is
|
|
* independent of the language-specific global preference.
|
|
*/
|
|
void SetBaseMinFontSize(int32_t aMinFontSize) {
|
|
if (aMinFontSize == mBaseMinFontSize)
|
|
return;
|
|
|
|
mBaseMinFontSize = aMinFontSize;
|
|
if (HasCachedStyleData()) {
|
|
// Media queries could have changed, since we changed the meaning
|
|
// of 'em' units in them.
|
|
MediaFeatureValuesChanged(eRestyle_ForceDescendants,
|
|
NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
|
|
float GetFullZoom() { return mFullZoom; }
|
|
void SetFullZoom(float aZoom);
|
|
|
|
nscoord GetAutoQualityMinFontSize() {
|
|
return DevPixelsToAppUnits(mAutoQualityMinFontSizePixelsPref);
|
|
}
|
|
|
|
/**
|
|
* Return the device's screen size in inches, for font size
|
|
* inflation.
|
|
*
|
|
* If |aChanged| is non-null, then aChanged is filled in with whether
|
|
* the screen size value has changed since either:
|
|
* a. the last time the function was called with non-null aChanged, or
|
|
* b. the first time the function was called.
|
|
*/
|
|
gfxSize ScreenSizeInchesForFontInflation(bool* aChanged = nullptr);
|
|
|
|
static int32_t AppUnitsPerCSSPixel() { return mozilla::AppUnitsPerCSSPixel(); }
|
|
int32_t AppUnitsPerDevPixel() const;
|
|
static int32_t AppUnitsPerCSSInch() { return mozilla::AppUnitsPerCSSInch(); }
|
|
|
|
static nscoord CSSPixelsToAppUnits(int32_t aPixels)
|
|
{ return NSToCoordRoundWithClamp(float(aPixels) *
|
|
float(AppUnitsPerCSSPixel())); }
|
|
|
|
static nscoord CSSPixelsToAppUnits(float aPixels)
|
|
{ return NSToCoordRoundWithClamp(aPixels *
|
|
float(AppUnitsPerCSSPixel())); }
|
|
|
|
static int32_t AppUnitsToIntCSSPixels(nscoord aAppUnits)
|
|
{ return NSAppUnitsToIntPixels(aAppUnits,
|
|
float(AppUnitsPerCSSPixel())); }
|
|
|
|
static float AppUnitsToFloatCSSPixels(nscoord aAppUnits)
|
|
{ return NSAppUnitsToFloatPixels(aAppUnits,
|
|
float(AppUnitsPerCSSPixel())); }
|
|
|
|
nscoord DevPixelsToAppUnits(int32_t aPixels) const
|
|
{ return NSIntPixelsToAppUnits(aPixels, AppUnitsPerDevPixel()); }
|
|
|
|
int32_t AppUnitsToDevPixels(nscoord aAppUnits) const
|
|
{ return NSAppUnitsToIntPixels(aAppUnits,
|
|
float(AppUnitsPerDevPixel())); }
|
|
|
|
int32_t CSSPixelsToDevPixels(int32_t aPixels)
|
|
{ return AppUnitsToDevPixels(CSSPixelsToAppUnits(aPixels)); }
|
|
|
|
float CSSPixelsToDevPixels(float aPixels)
|
|
{
|
|
return NSAppUnitsToFloatPixels(CSSPixelsToAppUnits(aPixels),
|
|
float(AppUnitsPerDevPixel()));
|
|
}
|
|
|
|
int32_t DevPixelsToIntCSSPixels(int32_t aPixels)
|
|
{ return AppUnitsToIntCSSPixels(DevPixelsToAppUnits(aPixels)); }
|
|
|
|
float DevPixelsToFloatCSSPixels(int32_t aPixels)
|
|
{ return AppUnitsToFloatCSSPixels(DevPixelsToAppUnits(aPixels)); }
|
|
|
|
mozilla::CSSToLayoutDeviceScale CSSToDevPixelScale() const
|
|
{
|
|
return mozilla::CSSToLayoutDeviceScale(
|
|
float(AppUnitsPerCSSPixel()) / float(AppUnitsPerDevPixel()));
|
|
}
|
|
|
|
// If there is a remainder, it is rounded to nearest app units.
|
|
nscoord GfxUnitsToAppUnits(gfxFloat aGfxUnits) const;
|
|
|
|
gfxFloat AppUnitsToGfxUnits(nscoord aAppUnits) const;
|
|
|
|
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(
|
|
mozilla::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.top)),
|
|
CSSTwipsToAppUnits(float(marginInTwips.right)),
|
|
CSSTwipsToAppUnits(float(marginInTwips.bottom)),
|
|
CSSTwipsToAppUnits(float(marginInTwips.left))); }
|
|
|
|
static nscoord CSSPointsToAppUnits(float aPoints)
|
|
{ return NSToCoordRound(aPoints * mozilla::AppUnitsPerCSSInch() /
|
|
POINTS_PER_INCH_FLOAT); }
|
|
|
|
nscoord RoundAppUnitsToNearestDevPixels(nscoord aAppUnits) const
|
|
{ return DevPixelsToAppUnits(AppUnitsToDevPixels(aAppUnits)); }
|
|
|
|
/**
|
|
* This checks the root element and the HTML BODY, if any, for an "overflow"
|
|
* property that should be applied to the viewport. If one is found then we
|
|
* return the element that we took the overflow from (which should then be
|
|
* treated as "overflow: visible"), and we store the overflow style here.
|
|
* If the document is in fullscreen, and the fullscreen element is not the
|
|
* root, the scrollbar of viewport will be suppressed.
|
|
* @return if scroll was propagated from some content node, the content node
|
|
* it was propagated from.
|
|
*/
|
|
nsIContent* UpdateViewportScrollbarStylesOverride();
|
|
ScrollbarStyles GetViewportScrollbarStylesOverride()
|
|
{
|
|
return mViewportStyleScrollbar;
|
|
}
|
|
|
|
/**
|
|
* Set and get methods for controlling the background drawing
|
|
*/
|
|
bool GetBackgroundImageDraw() const { return mDrawImageBackground; }
|
|
void SetBackgroundImageDraw(bool aCanDraw)
|
|
{
|
|
mDrawImageBackground = aCanDraw;
|
|
}
|
|
|
|
bool GetBackgroundColorDraw() const { return mDrawColorBackground; }
|
|
void SetBackgroundColorDraw(bool aCanDraw)
|
|
{
|
|
mDrawColorBackground = aCanDraw;
|
|
}
|
|
|
|
/**
|
|
* Getter and setters for OMTA time counters
|
|
*/
|
|
bool StyleUpdateForAllAnimationsIsUpToDate() const;
|
|
void TickLastStyleUpdateForAllAnimations();
|
|
void ClearLastStyleUpdateForAllAnimations();
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
bool BidiEnabled() const { return BidiEnabledInternal(); }
|
|
#else
|
|
bool BidiEnabled() const { return BidiEnabledExternal(); }
|
|
#endif
|
|
virtual bool BidiEnabledExternal() const;
|
|
bool BidiEnabledInternal() const;
|
|
|
|
/**
|
|
* Set bidi enabled. This means we should apply the Unicode Bidi Algorithm
|
|
*
|
|
* @lina 07/12/2000
|
|
*/
|
|
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(bool aIsVisual)
|
|
{
|
|
mIsVisual = aIsVisual;
|
|
}
|
|
|
|
/**
|
|
* Check whether the content should be treated as visual.
|
|
*
|
|
* @lina 05/02/2000
|
|
*/
|
|
bool IsVisualMode() const { return mIsVisual; }
|
|
|
|
//Mohamed
|
|
|
|
/**
|
|
* Set the Bidi options for the presentation context
|
|
*/
|
|
void SetBidi(uint32_t aBidiOptions,
|
|
bool aForceRestyle = false);
|
|
|
|
/**
|
|
* Get the Bidi options for the presentation context
|
|
* Not inline so consumers of nsPresContext are not forced to
|
|
* include nsIDocument.
|
|
*/
|
|
uint32_t GetBidi() const;
|
|
|
|
/**
|
|
* Render only Selection
|
|
*/
|
|
void SetIsRenderingOnlySelection(bool aResult)
|
|
{
|
|
mIsRenderingOnlySelection = aResult;
|
|
}
|
|
|
|
bool IsRenderingOnlySelection() const { return mIsRenderingOnlySelection; }
|
|
|
|
bool IsTopLevelWindowInactive();
|
|
|
|
/*
|
|
* Obtain a native them for rendering our widgets (both form controls and html)
|
|
*/
|
|
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.
|
|
*/
|
|
void ThemeChanged();
|
|
|
|
/*
|
|
* Notify the pres context that the resolution of the user interface has
|
|
* changed. This happens if a window is moved between HiDPI and non-HiDPI
|
|
* displays, so that the ratio of points to device pixels changes.
|
|
* The notification happens asynchronously.
|
|
*/
|
|
void UIResolutionChanged();
|
|
|
|
/*
|
|
* Like UIResolutionChanged() but invalidates values immediately.
|
|
*/
|
|
void UIResolutionChangedSync();
|
|
|
|
/*
|
|
* Notify the pres context that a system color has changed
|
|
*/
|
|
void SysColorChanged();
|
|
|
|
/** Printing methods below should only be used for Medium() == print **/
|
|
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.
|
|
*/
|
|
bool EnsureVisible();
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
void CountReflows(const char * aName,
|
|
nsIFrame * aFrame);
|
|
#endif
|
|
|
|
void ConstructedFrame() {
|
|
++mFramesConstructed;
|
|
}
|
|
void ReflowedFrame() {
|
|
++mFramesReflowed;
|
|
}
|
|
|
|
uint64_t FramesConstructedCount() {
|
|
return mFramesConstructed;
|
|
}
|
|
uint64_t FramesReflowedCount() {
|
|
return mFramesReflowed;
|
|
}
|
|
|
|
/**
|
|
* This table maps border-width enums 'thin', 'medium', 'thick'
|
|
* to actual nscoord values.
|
|
*/
|
|
const nscoord* GetBorderWidthTable() { return mBorderWidthTable; }
|
|
|
|
gfxTextPerfMetrics *GetTextPerfMetrics() { return mTextPerf; }
|
|
|
|
bool IsDynamic() { return (mType == eContext_PageLayout || mType == eContext_Galley); }
|
|
bool IsScreen() { return (mMedium == nsGkAtoms::screen ||
|
|
mType == eContext_PageLayout ||
|
|
mType == eContext_PrintPreview); }
|
|
|
|
// Is this presentation in a chrome docshell?
|
|
bool IsChrome() const { return mIsChrome; }
|
|
bool IsChromeOriginImage() const { return mIsChromeOriginImage; }
|
|
void UpdateIsChrome();
|
|
|
|
// Public API for native theme code to get style internals.
|
|
virtual bool HasAuthorSpecifiedRules(const nsIFrame *aFrame,
|
|
uint32_t ruleTypeMask) const;
|
|
|
|
// Is it OK to let the page specify colors and backgrounds?
|
|
bool UseDocumentColors() const {
|
|
MOZ_ASSERT(mUseDocumentColors || !(IsChrome() || IsChromeOriginImage()),
|
|
"We should never have a chrome doc or image that can't use its colors.");
|
|
return mUseDocumentColors;
|
|
}
|
|
|
|
// Explicitly enable and disable paint flashing.
|
|
void SetPaintFlashing(bool aPaintFlashing) {
|
|
mPaintFlashing = aPaintFlashing;
|
|
mPaintFlashingInitialized = true;
|
|
}
|
|
|
|
// This method should be used instead of directly accessing mPaintFlashing,
|
|
// as that value may be out of date when mPaintFlashingInitialized is false.
|
|
bool GetPaintFlashing() const;
|
|
|
|
bool SuppressingResizeReflow() const { return mSuppressResizeReflow; }
|
|
|
|
gfxUserFontSet* GetUserFontSet();
|
|
|
|
// 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(gfxUserFontEntry* aUpdatedFont = nullptr);
|
|
|
|
gfxMissingFontRecorder *MissingFontRecorder() { return mMissingFonts; }
|
|
void NotifyMissingFonts();
|
|
|
|
void FlushCounterStyles();
|
|
void RebuildCounterStyles(); // asynchronously
|
|
|
|
// 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.
|
|
void EnsureSafeToHandOutCSSRules();
|
|
|
|
void NotifyInvalidation(uint32_t aFlags);
|
|
void NotifyInvalidation(const nsRect& aRect, uint32_t aFlags);
|
|
// aRect is in device pixels
|
|
void NotifyInvalidation(const nsIntRect& aRect, uint32_t aFlags);
|
|
// aFlags are nsIPresShell::PAINT_ flags
|
|
void NotifyDidPaintForSubtree(uint32_t aFlags);
|
|
void FireDOMPaintEvent(nsInvalidateRequestList* aList);
|
|
|
|
// Callback for catching invalidations in ContainerLayers
|
|
// Passed to LayerProperties::ComputeDifference
|
|
static void NotifySubDocInvalidation(mozilla::layers::ContainerLayer* aContainer,
|
|
const nsIntRegion& aRegion);
|
|
void SetNotifySubDocInvalidationData(mozilla::layers::ContainerLayer* aContainer);
|
|
static void ClearNotifySubDocInvalidationData(mozilla::layers::ContainerLayer* aContainer);
|
|
bool IsDOMPaintEventPending();
|
|
void ClearMozAfterPaintEvents() {
|
|
mInvalidateRequestsSinceLastPaint.mRequests.Clear();
|
|
mUndeliveredInvalidateRequestsBeforeLastPaint.mRequests.Clear();
|
|
mAllInvalidated = false;
|
|
}
|
|
|
|
/**
|
|
* Returns the RestyleManager's restyle generation counter.
|
|
*/
|
|
uint64_t GetRestyleGeneration() const;
|
|
|
|
/**
|
|
* Returns whether there are any pending restyles or reflows.
|
|
*/
|
|
bool HasPendingRestyleOrReflow();
|
|
|
|
/**
|
|
* Informs the document's FontFaceSet that the refresh driver ticked,
|
|
* flushing style and layout.
|
|
*/
|
|
void NotifyFontFaceSetOnRefresh();
|
|
|
|
/**
|
|
* 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(bool aInterruptible);
|
|
|
|
/**
|
|
* A class that can be used to temporarily disable reflow interruption.
|
|
*/
|
|
class InterruptPreventer;
|
|
friend class InterruptPreventer;
|
|
class MOZ_STACK_CLASS InterruptPreventer {
|
|
public:
|
|
explicit InterruptPreventer(nsPresContext* aCtx) :
|
|
mCtx(aCtx),
|
|
mInterruptsEnabled(aCtx->mInterruptsEnabled),
|
|
mHasPendingInterrupt(aCtx->mHasPendingInterrupt)
|
|
{
|
|
mCtx->mInterruptsEnabled = false;
|
|
mCtx->mHasPendingInterrupt = false;
|
|
}
|
|
~InterruptPreventer() {
|
|
mCtx->mInterruptsEnabled = mInterruptsEnabled;
|
|
mCtx->mHasPendingInterrupt = mHasPendingInterrupt;
|
|
}
|
|
|
|
private:
|
|
nsPresContext* mCtx;
|
|
bool mInterruptsEnabled;
|
|
bool 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.
|
|
*/
|
|
bool CheckForInterrupt(nsIFrame* aFrame);
|
|
/**
|
|
* Returns true if CheckForInterrupt has returned true since the last
|
|
* ReflowStarted call. Cannot itself trigger an interrupt check.
|
|
*/
|
|
bool 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);
|
|
|
|
void NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
PropertyTable()->DeleteAllFor(aFrame);
|
|
}
|
|
|
|
virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
|
|
virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const {
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
bool IsRootContentDocument();
|
|
bool IsCrossProcessRootContentDocument();
|
|
|
|
bool IsGlyph() const {
|
|
return mIsGlyph;
|
|
}
|
|
|
|
void SetIsGlyph(bool aValue) {
|
|
mIsGlyph = aValue;
|
|
}
|
|
|
|
bool UsesRootEMUnits() const {
|
|
return mUsesRootEMUnits;
|
|
}
|
|
|
|
void SetUsesRootEMUnits(bool aValue) {
|
|
mUsesRootEMUnits = aValue;
|
|
}
|
|
|
|
bool UsesExChUnits() const {
|
|
return mUsesExChUnits;
|
|
}
|
|
|
|
void SetUsesExChUnits(bool aValue) {
|
|
mUsesExChUnits = aValue;
|
|
}
|
|
|
|
bool UsesViewportUnits() const {
|
|
return mUsesViewportUnits;
|
|
}
|
|
|
|
void SetUsesViewportUnits(bool aValue) {
|
|
mUsesViewportUnits = aValue;
|
|
}
|
|
|
|
// true if there are OMTA transition updates for the current document which
|
|
// have been throttled, and therefore some style information may not be up
|
|
// to date
|
|
bool ExistThrottledUpdates() const {
|
|
return mExistThrottledUpdates;
|
|
}
|
|
|
|
void SetExistThrottledUpdates(bool aExistThrottledUpdates) {
|
|
mExistThrottledUpdates = aExistThrottledUpdates;
|
|
}
|
|
|
|
bool IsDeviceSizePageSize();
|
|
|
|
bool HasWarnedAboutPositionedTableParts() const {
|
|
return mHasWarnedAboutPositionedTableParts;
|
|
}
|
|
|
|
void SetHasWarnedAboutPositionedTableParts() {
|
|
mHasWarnedAboutPositionedTableParts = true;
|
|
}
|
|
|
|
protected:
|
|
friend class nsRunnableMethod<nsPresContext>;
|
|
void ThemeChangedInternal();
|
|
void SysColorChangedInternal();
|
|
void UIResolutionChangedInternal();
|
|
|
|
static bool
|
|
UIResolutionChangedSubdocumentCallback(nsIDocument* aDocument, void* aData);
|
|
|
|
void SetImgAnimations(nsIContent *aParent, uint16_t aMode);
|
|
void SetSMILAnimations(nsIDocument *aDoc, uint16_t aNewMode,
|
|
uint16_t aOldMode);
|
|
void GetDocumentColorPreferences();
|
|
|
|
void PreferenceChanged(const char* aPrefName);
|
|
static void PrefChangedCallback(const char*, void*);
|
|
|
|
void UpdateAfterPreferencesChanged();
|
|
static void PrefChangedUpdateTimerCallback(nsITimer *aTimer, void *aClosure);
|
|
|
|
void GetUserPreferences();
|
|
|
|
// Allow nsAutoPtr<LangGroupFontPrefs> dtor to access this protected struct's
|
|
// dtor:
|
|
struct LangGroupFontPrefs;
|
|
friend class nsAutoPtr<LangGroupFontPrefs>;
|
|
struct LangGroupFontPrefs {
|
|
// Font sizes default to zero; they will be set in GetFontPreferences
|
|
LangGroupFontPrefs()
|
|
: mLangGroup(nullptr)
|
|
, mMinimumFontSize(0)
|
|
, mDefaultVariableFont(mozilla::eFamily_serif, 0)
|
|
, mDefaultFixedFont(mozilla::eFamily_monospace, 0)
|
|
, mDefaultSerifFont(mozilla::eFamily_serif, 0)
|
|
, mDefaultSansSerifFont(mozilla::eFamily_sans_serif, 0)
|
|
, mDefaultMonospaceFont(mozilla::eFamily_monospace, 0)
|
|
, mDefaultCursiveFont(mozilla::eFamily_cursive, 0)
|
|
, mDefaultFantasyFont(mozilla::eFamily_fantasy, 0)
|
|
{}
|
|
|
|
size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const {
|
|
size_t n = 0;
|
|
LangGroupFontPrefs *curr = mNext;
|
|
while (curr) {
|
|
n += aMallocSizeOf(curr);
|
|
|
|
// Measurement of the following members may be added later if DMD finds
|
|
// it is worthwhile:
|
|
// - mLangGroup
|
|
// - mDefault*Font
|
|
|
|
curr = curr->mNext;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
nsCOMPtr<nsIAtom> mLangGroup;
|
|
nscoord mMinimumFontSize;
|
|
nsFont mDefaultVariableFont;
|
|
nsFont mDefaultFixedFont;
|
|
nsFont mDefaultSerifFont;
|
|
nsFont mDefaultSansSerifFont;
|
|
nsFont mDefaultMonospaceFont;
|
|
nsFont mDefaultCursiveFont;
|
|
nsFont mDefaultFantasyFont;
|
|
nsAutoPtr<LangGroupFontPrefs> mNext;
|
|
};
|
|
|
|
/**
|
|
* Fetch the user's font preferences for the given aLanguage's
|
|
* langugage group.
|
|
*/
|
|
const LangGroupFontPrefs* GetFontPrefsForLang(nsIAtom *aLanguage) const;
|
|
|
|
void ResetCachedFontPrefs() {
|
|
// Throw away any other LangGroupFontPrefs objects:
|
|
mLangGroupFontPrefs.mNext = nullptr;
|
|
|
|
// Make GetFontPreferences reinitialize mLangGroupFontPrefs:
|
|
mLangGroupFontPrefs.mLangGroup = nullptr;
|
|
}
|
|
|
|
void UpdateCharSet(const nsCString& aCharSet);
|
|
|
|
public:
|
|
void DoChangeCharSet(const nsCString& aCharSet);
|
|
|
|
/**
|
|
* Checks for MozAfterPaint listeners on the document
|
|
*/
|
|
bool MayHavePaintEventListener();
|
|
|
|
/**
|
|
* Checks for MozAfterPaint listeners on the document and
|
|
* any subdocuments, except for subdocuments that are non-top-level
|
|
* content documents.
|
|
*/
|
|
bool MayHavePaintEventListenerInSubDocument();
|
|
|
|
#ifdef RESTYLE_LOGGING
|
|
// Controls for whether debug information about restyling in this
|
|
// document should be output.
|
|
bool RestyleLoggingEnabled() const { return mRestyleLoggingEnabled; }
|
|
void StartRestyleLogging() { mRestyleLoggingEnabled = true; }
|
|
void StopRestyleLogging() { mRestyleLoggingEnabled = false; }
|
|
#endif
|
|
|
|
void InvalidatePaintedLayers();
|
|
|
|
protected:
|
|
// May be called multiple times (unlink, destructor)
|
|
void Destroy();
|
|
|
|
void AppUnitsPerDevPixelChanged();
|
|
|
|
void HandleRebuildCounterStyles() {
|
|
mPostedFlushCounterStyles = false;
|
|
FlushCounterStyles();
|
|
}
|
|
|
|
bool HavePendingInputEvent();
|
|
|
|
// Can't be inline because we can't include nsStyleSet.h.
|
|
bool HasCachedStyleData();
|
|
|
|
bool IsChromeSlow() const;
|
|
|
|
// Creates a one-shot timer with the given aCallback & aDelay.
|
|
// Returns a refcounted pointer to the timer (or nullptr on failure).
|
|
already_AddRefed<nsITimer> CreateTimer(nsTimerCallbackFunc aCallback,
|
|
uint32_t aDelay);
|
|
|
|
// 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;
|
|
// the nsPresShell owns a strong reference to the nsPresContext, and is responsible
|
|
// for nulling this pointer before it is destroyed
|
|
nsIPresShell* MOZ_NON_OWNING_REF mShell; // [WEAK]
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
RefPtr<nsDeviceContext> mDeviceContext; // [STRONG] could be weak, but
|
|
// better safe than sorry.
|
|
// Cannot reintroduce cycles
|
|
// since there is no dependency
|
|
// from gfx back to layout.
|
|
RefPtr<mozilla::EventStateManager> mEventManager;
|
|
RefPtr<nsRefreshDriver> mRefreshDriver;
|
|
RefPtr<nsTransitionManager> mTransitionManager;
|
|
RefPtr<nsAnimationManager> mAnimationManager;
|
|
RefPtr<mozilla::RestyleManager> mRestyleManager;
|
|
RefPtr<mozilla::CounterStyleManager> mCounterStyleManager;
|
|
nsIAtom* MOZ_UNSAFE_REF("always a static atom") mMedium; // initialized by subclass ctors
|
|
nsCOMPtr<nsIAtom> mMediaEmulated;
|
|
|
|
// 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).
|
|
nsCOMPtr<nsIAtom> mLanguage;
|
|
|
|
public:
|
|
// The following are public member variables so that we can use them
|
|
// with mozilla::AutoToggle or mozilla::AutoRestore.
|
|
|
|
// Should we disable font size inflation because we're inside of
|
|
// shrink-wrapping calculations on an inflation container?
|
|
bool mInflationDisabledForShrinkWrap;
|
|
|
|
protected:
|
|
|
|
mozilla::WeakPtr<nsDocShell> mContainer;
|
|
|
|
// Base minimum font size, independent of the language-specific global preference. Defaults to 0
|
|
int32_t mBaseMinFontSize;
|
|
float mTextZoom; // Text zoom, defaults to 1.0
|
|
float mFullZoom; // Page zoom, defaults to 1.0
|
|
|
|
gfxSize mLastFontInflationScreenSize;
|
|
|
|
int32_t mCurAppUnitsPerDevPixel;
|
|
int32_t mAutoQualityMinFontSizePixelsPref;
|
|
|
|
nsCOMPtr<nsITheme> mTheme;
|
|
nsCOMPtr<nsILanguageAtomService> mLangService;
|
|
nsCOMPtr<nsIPrintSettings> mPrintSettings;
|
|
nsCOMPtr<nsITimer> mPrefChangedTimer;
|
|
|
|
FramePropertyTable mPropertyTable;
|
|
|
|
nsInvalidateRequestList mInvalidateRequestsSinceLastPaint;
|
|
nsInvalidateRequestList mUndeliveredInvalidateRequestsBeforeLastPaint;
|
|
|
|
// text performance metrics
|
|
nsAutoPtr<gfxTextPerfMetrics> mTextPerf;
|
|
|
|
nsAutoPtr<gfxMissingFontRecorder> mMissingFonts;
|
|
|
|
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 mViewportStyleScrollbar;
|
|
uint8_t mFocusRingWidth;
|
|
|
|
bool mExistThrottledUpdates;
|
|
|
|
uint16_t mImageAnimationMode;
|
|
uint16_t mImageAnimationModePref;
|
|
|
|
LangGroupFontPrefs mLangGroupFontPrefs;
|
|
|
|
nscoord mBorderWidthTable[3];
|
|
|
|
uint32_t mInterruptChecksToSkip;
|
|
|
|
// Counters for tests and tools that want to detect frame construction
|
|
// or reflow.
|
|
uint64_t mFramesConstructed;
|
|
uint64_t mFramesReflowed;
|
|
|
|
mozilla::TimeStamp mReflowStartTime;
|
|
|
|
// last time we did a full style flush
|
|
mozilla::TimeStamp mLastStyleUpdateForAllAnimations;
|
|
|
|
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 mIsRootPaginatedDocument : 1;
|
|
unsigned mPrefBidiDirection : 1;
|
|
unsigned mPrefScrollbarSide : 2;
|
|
unsigned mPendingSysColorChanged : 1;
|
|
unsigned mPendingThemeChanged : 1;
|
|
unsigned mPendingUIResolutionChanged : 1;
|
|
unsigned mPendingMediaFeatureValuesChanged : 1;
|
|
unsigned mPrefChangePendingNeedsReflow : 1;
|
|
unsigned mIsEmulatingMedia : 1;
|
|
// True if the requests in mInvalidateRequestsSinceLastPaint cover the
|
|
// entire viewport
|
|
unsigned mAllInvalidated : 1;
|
|
|
|
// Are we currently drawing an SVG glyph?
|
|
unsigned mIsGlyph : 1;
|
|
|
|
// Does the associated document use root-em (rem) units?
|
|
unsigned mUsesRootEMUnits : 1;
|
|
// Does the associated document use ex or ch units?
|
|
unsigned mUsesExChUnits : 1;
|
|
// Does the associated document use viewport units (vw/vh/vmin/vmax)?
|
|
unsigned mUsesViewportUnits : 1;
|
|
|
|
// Has there been a change to the viewport's dimensions?
|
|
unsigned mPendingViewportChange : 1;
|
|
|
|
// Is the current mCounterStyleManager valid?
|
|
unsigned mCounterStylesDirty : 1;
|
|
// Do we currently have an event posted to call FlushCounterStyles?
|
|
unsigned mPostedFlushCounterStyles: 1;
|
|
|
|
// resize reflow is suppressed when the only change has been to zoom
|
|
// the document rather than to change the document's dimensions
|
|
unsigned mSuppressResizeReflow : 1;
|
|
|
|
unsigned mIsVisual : 1;
|
|
|
|
unsigned mFireAfterPaintEvents : 1;
|
|
|
|
unsigned mIsChrome : 1;
|
|
unsigned mIsChromeOriginImage : 1;
|
|
|
|
// Should we paint flash in this context? Do not use this variable directly.
|
|
// Use GetPaintFlashing() method instead.
|
|
mutable unsigned mPaintFlashing : 1;
|
|
mutable unsigned mPaintFlashingInitialized : 1;
|
|
|
|
unsigned mHasWarnedAboutPositionedTableParts : 1;
|
|
|
|
// Have we added quirk.css to the style set?
|
|
unsigned mQuirkSheetAdded : 1;
|
|
|
|
// Is there a pref update to process once we have a container?
|
|
unsigned mNeedsPrefUpdate : 1;
|
|
|
|
#ifdef RESTYLE_LOGGING
|
|
// Should we output debug information about restyling for this document?
|
|
bool mRestyleLoggingEnabled;
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
bool mInitialized;
|
|
#endif
|
|
|
|
|
|
protected:
|
|
|
|
virtual ~nsPresContext();
|
|
|
|
// 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
|
|
};
|
|
|
|
nscolor MakeColorPref(const nsString& aColor);
|
|
|
|
void LastRelease();
|
|
|
|
#ifdef DEBUG
|
|
private:
|
|
friend struct nsAutoLayoutPhase;
|
|
uint32_t mLayoutPhaseCount[eLayoutPhase_COUNT];
|
|
public:
|
|
uint32_t LayoutPhaseCount(nsLayoutPhase aPhase) {
|
|
return mLayoutPhaseCount[aPhase];
|
|
}
|
|
#endif
|
|
|
|
};
|
|
|
|
class nsRootPresContext final : public nsPresContext {
|
|
public:
|
|
nsRootPresContext(nsIDocument* aDocument, nsPresContextType aType);
|
|
virtual ~nsRootPresContext();
|
|
virtual void Detach() override;
|
|
|
|
/**
|
|
* Ensure that NotifyDidPaintForSubtree is eventually called on this
|
|
* object after a timeout.
|
|
*/
|
|
void EnsureEventualDidPaintEvent();
|
|
|
|
void CancelDidPaintTimer()
|
|
{
|
|
if (mNotifyDidPaintTimer) {
|
|
mNotifyDidPaintTimer->Cancel();
|
|
mNotifyDidPaintTimer = nullptr;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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(nsIContent* aPlugin);
|
|
/**
|
|
* Stops a plugin receiving geometry updates (position and clip
|
|
* region). If the plugin was not already registered, this does
|
|
* nothing.
|
|
*/
|
|
void UnregisterPluginForGeometryUpdates(nsIContent* aPlugin);
|
|
|
|
bool NeedToComputePluginGeometryUpdates()
|
|
{
|
|
return mRegisteredPlugins.Count() > 0;
|
|
}
|
|
/**
|
|
* Compute geometry updates for each plugin given that aList is the display
|
|
* list for aFrame. The updates are not yet applied;
|
|
* ApplyPluginGeometryUpdates is responsible for that. In the meantime they
|
|
* are stored on each nsPluginFrame.
|
|
* This needs to be called even when aFrame is a popup, since although
|
|
* windowed plugins aren't allowed in popups, windowless plugins are
|
|
* and ComputePluginGeometryUpdates needs to be called for them.
|
|
*/
|
|
void ComputePluginGeometryUpdates(nsIFrame* aFrame,
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList);
|
|
|
|
/**
|
|
* Apply the stored plugin geometry updates. This should normally be called
|
|
* in DidPaint so the plugins are moved/clipped immediately after we've
|
|
* updated our window, so they look in sync with our window.
|
|
*/
|
|
void ApplyPluginGeometryUpdates();
|
|
|
|
/**
|
|
* Transfer stored plugin geometry updates to the compositor. Called during
|
|
* reflow, data is shipped over with layer updates. e10s specific.
|
|
*/
|
|
void CollectPluginGeometryUpdates(mozilla::layers::LayerManager* aLayerManager);
|
|
|
|
virtual bool IsRoot() override { return true; }
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* See nsFrameManagerBase::GetGlobalGenerationNumber() for a
|
|
* global generation number.
|
|
*/
|
|
uint32_t GetDOMGeneration() { return mDOMGeneration; }
|
|
|
|
/**
|
|
* Add a runnable that will get called before the next paint. They will get
|
|
* run eventually even if painting doesn't happen. They might run well before
|
|
* painting happens.
|
|
*/
|
|
void AddWillPaintObserver(nsIRunnable* aRunnable);
|
|
|
|
/**
|
|
* Run all runnables that need to get called before the next paint.
|
|
*/
|
|
void FlushWillPaintObservers();
|
|
|
|
virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override;
|
|
|
|
protected:
|
|
/**
|
|
* Start a timer to ensure we eventually run ApplyPluginGeometryUpdates.
|
|
*/
|
|
void InitApplyPluginGeometryTimer();
|
|
/**
|
|
* Cancel the timer that ensures we eventually run ApplyPluginGeometryUpdates.
|
|
*/
|
|
void CancelApplyPluginGeometryTimer();
|
|
|
|
class RunWillPaintObservers : public nsRunnable {
|
|
public:
|
|
explicit RunWillPaintObservers(nsRootPresContext* aPresContext) : mPresContext(aPresContext) {}
|
|
void Revoke() { mPresContext = nullptr; }
|
|
NS_IMETHOD Run() override
|
|
{
|
|
if (mPresContext) {
|
|
mPresContext->FlushWillPaintObservers();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
// The lifetime of this reference is handled by an nsRevocableEventPtr
|
|
nsRootPresContext* MOZ_NON_OWNING_REF mPresContext;
|
|
};
|
|
|
|
friend class nsPresContext;
|
|
|
|
nsCOMPtr<nsITimer> mNotifyDidPaintTimer;
|
|
nsCOMPtr<nsITimer> mApplyPluginGeometryTimer;
|
|
nsTHashtable<nsRefPtrHashKey<nsIContent> > mRegisteredPlugins;
|
|
nsTArray<nsCOMPtr<nsIRunnable> > mWillPaintObservers;
|
|
nsRevocableEventPtr<RunWillPaintObservers> mWillPaintFallbackEvent;
|
|
uint32_t mDOMGeneration;
|
|
};
|
|
|
|
#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___ */
|