зеркало из https://github.com/mozilla/gecko-dev.git
1459 строки
48 KiB
C++
1459 строки
48 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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/AppUnits.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/EnumeratedArray.h"
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#include "mozilla/MediaEmulationData.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/NotNull.h"
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#include "mozilla/PreferenceSheet.h"
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#include "mozilla/PresShellForwards.h"
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#include "mozilla/ScrollStyles.h"
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#include "mozilla/ServoStyleSet.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/WeakPtr.h"
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#include "nsColor.h"
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#include "nsCompatibility.h"
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#include "nsCoord.h"
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#include "nsCOMPtr.h"
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#include "nsRect.h"
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#include "nsStringFwd.h"
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#include "gfxFontConstants.h"
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#include "nsAtom.h"
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#include "nsCRT.h"
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#include "nsIWidgetListener.h" // for nsSizeMode
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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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#include "gfxTypes.h"
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#include "gfxRect.h"
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#include "nsTArray.h"
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#include "prclist.h"
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#include "nsThreadUtils.h"
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#include "Units.h"
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#include "prenv.h"
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class nsBidi;
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class nsIPrintSettings;
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class nsDocShell;
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class nsIDocShell;
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class nsITheme;
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class nsITimer;
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class nsIContent;
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class nsIFrame;
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class nsFrameManager;
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class nsAtom;
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class nsIRunnable;
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class gfxFontFeatureValueSet;
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class gfxUserFontEntry;
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class gfxUserFontSet;
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class gfxTextPerfMetrics;
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class nsCSSFontFeatureValuesRule;
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class nsCSSFrameConstructor;
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class nsDisplayList;
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class nsDisplayListBuilder;
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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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struct FontMatchingStats;
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namespace mozilla {
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class AnimationEventDispatcher;
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class EffectCompositor;
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class Encoding;
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class EventStateManager;
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class CounterStyleManager;
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class PresShell;
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class RestyleManager;
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class StaticPresData;
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struct MediaFeatureChange;
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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 dom {
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class Document;
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class Element;
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} // namespace dom
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} // namespace mozilla
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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
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// nsFont.h) To be used for Get/SetDefaultFont(). The other IDs in nsFont.h are
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// also supported.
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//
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// kGenericFont_moz_variable
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const uint8_t kPresContext_DefaultVariableFont_ID = 0x00;
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// kGenericFont_moz_fixed
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const uint8_t kPresContext_DefaultFixedFont_ID = 0x01;
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#ifdef DEBUG
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struct nsAutoLayoutPhase;
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enum class nsLayoutPhase : uint8_t {
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Paint,
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DisplayListBuilding, // sometimes a subset of the paint phase
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Reflow,
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FrameC,
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COUNT
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};
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#endif
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/* Used by nsPresContext::HasAuthorSpecifiedRules */
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#define NS_AUTHOR_SPECIFIED_BORDER_OR_BACKGROUND (1 << 0)
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#define NS_AUTHOR_SPECIFIED_PADDING (1 << 1)
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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 nsISupports, public mozilla::SupportsWeakPtr {
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public:
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using Encoding = mozilla::Encoding;
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template <typename T>
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using NotNull = mozilla::NotNull<T>;
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template <typename T>
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using Maybe = mozilla::Maybe<T>;
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using MediaEmulationData = mozilla::MediaEmulationData;
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using StylePrefersColorScheme = mozilla::StylePrefersColorScheme;
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typedef mozilla::ScrollStyles ScrollStyles;
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using TransactionId = mozilla::layers::TransactionId;
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS_FINAL
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NS_DECL_CYCLE_COLLECTION_CLASS(nsPresContext)
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enum nsPresContextType : uint8_t {
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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(mozilla::dom::Document* 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 and detach 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 AttachPresShell(mozilla::PresShell* aPresShell);
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void DetachPresShell();
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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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mozilla::PresShell* PresShell() const {
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NS_ASSERTION(mPresShell, "Null pres shell");
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return mPresShell;
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}
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mozilla::PresShell* GetPresShell() const { return mPresShell; }
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void DocumentCharSetChanged(NotNull<const Encoding*> aCharSet);
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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() const;
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/**
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* Returns the prescontext of the root content document in the same process
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* that contains this presentation, or null if there isn't one.
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*/
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nsPresContext* GetInProcessRootContentDocumentPresContext();
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/**
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* Returns the nearest widget for the root frame or view 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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*/
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nsIWidget* GetRootWidget() const;
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/**
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* Returns the widget which may have native focus and handles text input
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* like keyboard input, IME, etc.
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*/
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nsIWidget* GetTextInputHandlingWidget() const {
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// Currently, root widget for each PresContext handles text input.
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return GetRootWidget();
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}
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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() const;
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virtual bool IsRoot() { return false; }
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mozilla::dom::Document* Document() const {
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#ifdef DEBUG
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ValidatePresShellAndDocumentReleation();
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#endif // #ifdef DEBUG
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return mDocument;
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}
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inline mozilla::ServoStyleSet* StyleSet() const;
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bool HasPendingMediaQueryUpdates() const {
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return !!mPendingMediaFeatureValuesChange;
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}
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inline nsCSSFrameConstructor* FrameConstructor();
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mozilla::AnimationEventDispatcher* AnimationEventDispatcher() {
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return mAnimationEventDispatcher;
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}
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mozilla::EffectCompositor* EffectCompositor() { return mEffectCompositor; }
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nsTransitionManager* TransitionManager() { return mTransitionManager.get(); }
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nsAnimationManager* AnimationManager() { return mAnimationManager.get(); }
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const nsAnimationManager* AnimationManager() const {
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return mAnimationManager.get();
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}
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nsRefreshDriver* RefreshDriver() { return mRefreshDriver; }
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mozilla::RestyleManager* RestyleManager() {
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MOZ_ASSERT(mRestyleManager);
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return mRestyleManager.get();
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}
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mozilla::CounterStyleManager* CounterStyleManager() const {
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return mCounterStyleManager;
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}
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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 a change hint (which must not
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* contain nsChangeHint_ReconstructFrame) to the root frame.
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*
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* For the restyle hint argument, 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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* FIXME(emilio): The name of this is an utter lie. We should probably call
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* this PostGlobalStyleChange or something, as it doesn't really rebuild
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* anything unless you tell it to via the change hint / restyle hint
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* machinery.
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*/
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void RebuildAllStyleData(nsChangeHint, const mozilla::RestyleHint&);
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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 / counter-style manager / etc.
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*/
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void PostRebuildAllStyleDataEvent(nsChangeHint, const mozilla::RestyleHint&);
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void ContentLanguageChanged();
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/**
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* Handle changes in the values of media features (used in media queries).
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*/
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void MediaFeatureValuesChanged(const mozilla::MediaFeatureChange& aChange);
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void FlushPendingMediaFeatureValuesChanged();
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/**
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* Calls MediaFeatureValuesChanged for this pres context and all descendant
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* subdocuments that have a pres context. This should be used for media
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* features that must be updated in all subdocuments e.g. display-mode.
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*/
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void MediaFeatureValuesChangedAllDocuments(
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const mozilla::MediaFeatureChange&);
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/**
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* Updates the size mode on all remote children and recursively notifies this
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* document and all subdocuments (including remote children) that a media
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* feature value has changed.
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*/
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void SizeModeChanged(nsSizeMode aSizeMode);
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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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* 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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void SetImageAnimationMode(uint16_t aMode);
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/**
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* Get medium of presentation
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*/
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const nsAtom* Medium() {
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MOZ_ASSERT(mMedium);
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return mMediaEmulationData.mMedium ? mMediaEmulationData.mMedium.get()
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: mMedium;
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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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* If passed null, it stops emulating.
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*/
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void EmulateMedium(nsAtom* aMediaType);
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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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// 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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const mozilla::PreferenceSheet::Prefs& PrefSheetPrefs() const {
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return mozilla::PreferenceSheet::PrefsFor(*mDocument);
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}
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nscolor DefaultBackgroundColor() const {
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return PrefSheetPrefs().mDefaultBackgroundColor;
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}
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nsISupports* GetContainerWeak() const;
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nsDocShell* GetDocShell() const;
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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() const { 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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nsSize GetSizeForViewportUnits() const { return mSizeForViewportUnits; }
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/**
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* Set the maximum height of the dynamic toolbar in nscoord units.
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*/
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MOZ_CAN_RUN_SCRIPT
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void SetDynamicToolbarMaxHeight(mozilla::ScreenIntCoord aHeight);
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mozilla::ScreenIntCoord GetDynamicToolbarMaxHeight() const {
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MOZ_ASSERT(IsRootContentDocumentCrossProcess());
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return mDynamicToolbarMaxHeight;
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}
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/**
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* Returns true if we are using the dynamic toolbar.
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*/
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bool HasDynamicToolbar() const {
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MOZ_ASSERT(IsRootContentDocumentCrossProcess());
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return mDynamicToolbarMaxHeight > 0;
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}
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/*
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* |aOffset| must be offset from the bottom edge of the ICB and it's negative.
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*/
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void UpdateDynamicToolbarOffset(mozilla::ScreenIntCoord aOffset);
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mozilla::ScreenIntCoord GetDynamicToolbarHeight() const {
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MOZ_ASSERT(IsRootContentDocumentCrossProcess());
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return mDynamicToolbarHeight;
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}
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/**
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* Returns the state of the dynamic toolbar.
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*/
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mozilla::DynamicToolbarState GetDynamicToolbarState() const;
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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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/**
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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 factor to use when rendering the pages for print
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* preview. 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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*
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* The getter should only be used by the page sequence frame, which is the
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* frame responsible for applying the scaling. Other callers should use
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* nsPageSequenceFrame::GetPrintPreviewScale() if needed, instead of this API.
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*
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* XXX Temporary: see http://wiki.mozilla.org/Gecko:PrintPreview
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*/
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float GetPrintPreviewScaleForSequenceFrame() { return mPPScale; }
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void SetPrintPreviewScale(float aScale) { mPPScale = aScale; }
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nsDeviceContext* DeviceContext() const { return mDeviceContext; }
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mozilla::EventStateManager* EventStateManager() { return mEventManager; }
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/**
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* Get/set a text zoom factor that is applied on top of the normal text zoom
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* set by the front-end/user.
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*/
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float GetSystemFontScale() const { return mSystemFontScale; }
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void SetSystemFontScale(float aFontScale) {
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MOZ_ASSERT(aFontScale > 0.0f, "invalid font scale");
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if (aFontScale == mSystemFontScale || IsPrintingOrPrintPreview()) {
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return;
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}
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mSystemFontScale = aFontScale;
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UpdateEffectiveTextZoom();
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}
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/**
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* Get/set the text zoom factor in use.
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* This value should be used if you're interested in the pure text zoom value
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* controlled by the front-end, e.g. when transferring zoom levels to a new
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* document.
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* Code that wants to use this value for layouting and rendering purposes
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* should consider using EffectiveTextZoom() instead, so as to take the system
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* font scale into account as well.
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*/
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float TextZoom() const { return mTextZoom; }
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/**
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* Corresponds to the product of text zoom and system font scale, limited
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* by zoom.maxPercent and minPercent.
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* As the system font scale is automatically set by the PresShell, code that
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* e.g. wants to transfer zoom levels to a new document should use TextZoom()
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* instead, which corresponds to the text zoom level that was actually set by
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* the front-end/user.
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*/
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float EffectiveTextZoom() const { return mEffectiveTextZoom; }
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/**
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* Notify the pres context that the safe area insets have changed.
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*/
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void SetSafeAreaInsets(const mozilla::ScreenIntMargin& aInsets);
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mozilla::ScreenIntMargin GetSafeAreaInsets() const { return mSafeAreaInsets; }
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protected:
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void UpdateEffectiveTextZoom();
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#ifdef DEBUG
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void ValidatePresShellAndDocumentReleation() const;
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#endif // #ifdef DEBUG
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void SetTextZoom(float aZoom) {
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MOZ_ASSERT(aZoom > 0.0f, "invalid zoom factor");
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if (aZoom == mTextZoom) return;
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mTextZoom = aZoom;
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UpdateEffectiveTextZoom();
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}
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void SetFullZoom(float aZoom);
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public:
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float GetFullZoom() { return mFullZoom; }
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/**
|
|
* Device full zoom differs from full zoom because it gets the zoom from
|
|
* the device context, which may be using a different zoom due to rounding
|
|
* of app units to device pixels.
|
|
*/
|
|
float GetDeviceFullZoom();
|
|
|
|
float GetOverrideDPPX() const { return mMediaEmulationData.mDPPX; }
|
|
void SetOverrideDPPX(float);
|
|
|
|
/**
|
|
* Recomputes the data dependent on the browsing context, like zoom and text
|
|
* zoom.
|
|
*
|
|
* TODO(emilio): Eventually stuff like the media emulation data, overrideDPPX
|
|
* and such should also move here.
|
|
*/
|
|
void RecomputeBrowsingContextDependentData();
|
|
|
|
Maybe<StylePrefersColorScheme> GetOverridePrefersColorScheme() const {
|
|
return mMediaEmulationData.mPrefersColorScheme;
|
|
}
|
|
void SetOverridePrefersColorScheme(const Maybe<StylePrefersColorScheme>&);
|
|
|
|
mozilla::CSSCoord GetAutoQualityMinFontSize() const {
|
|
return DevPixelsToFloatCSSPixels(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);
|
|
|
|
int32_t AppUnitsPerDevPixel() const { return mCurAppUnitsPerDevPixel; }
|
|
|
|
static nscoord CSSPixelsToAppUnits(int32_t aPixels) {
|
|
return NSToCoordRoundWithClamp(float(aPixels) *
|
|
float(mozilla::AppUnitsPerCSSPixel()));
|
|
}
|
|
|
|
static nscoord CSSPixelsToAppUnits(float aPixels) {
|
|
return NSToCoordRoundWithClamp(aPixels *
|
|
float(mozilla::AppUnitsPerCSSPixel()));
|
|
}
|
|
|
|
static int32_t AppUnitsToIntCSSPixels(nscoord aAppUnits) {
|
|
return NSAppUnitsToIntPixels(aAppUnits,
|
|
float(mozilla::AppUnitsPerCSSPixel()));
|
|
}
|
|
|
|
static float AppUnitsToFloatCSSPixels(nscoord aAppUnits) {
|
|
return NSAppUnitsToFloatPixels(aAppUnits,
|
|
float(mozilla::AppUnitsPerCSSPixel()));
|
|
}
|
|
|
|
static double AppUnitsToDoubleCSSPixels(nscoord aAppUnits) {
|
|
return NSAppUnitsToDoublePixels(aAppUnits,
|
|
double(mozilla::AppUnitsPerCSSPixel()));
|
|
}
|
|
|
|
nscoord DevPixelsToAppUnits(int32_t aPixels) const {
|
|
return NSIntPixelsToAppUnits(aPixels, AppUnitsPerDevPixel());
|
|
}
|
|
|
|
int32_t AppUnitsToDevPixels(nscoord aAppUnits) const {
|
|
return NSAppUnitsToIntPixels(aAppUnits, float(AppUnitsPerDevPixel()));
|
|
}
|
|
|
|
float AppUnitsToFloatDevPixels(nscoord aAppUnits) {
|
|
return 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) const {
|
|
return AppUnitsToFloatCSSPixels(DevPixelsToAppUnits(aPixels));
|
|
}
|
|
|
|
mozilla::CSSToLayoutDeviceScale CSSToDevPixelScale() const {
|
|
return mozilla::CSSToLayoutDeviceScale(
|
|
float(mozilla::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 PhysicalMillimetersToAppUnits(float aMM) const;
|
|
|
|
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.
|
|
*/
|
|
mozilla::dom::Element* UpdateViewportScrollStylesOverride();
|
|
|
|
/**
|
|
* Returns the cached result from the last call to
|
|
* UpdateViewportScrollStylesOverride() -- i.e. return the node
|
|
* whose scrollbar styles we have propagated to the viewport (or nullptr if
|
|
* there is no such node).
|
|
*/
|
|
mozilla::dom::Element* GetViewportScrollStylesOverrideElement() const {
|
|
return mViewportScrollOverrideElement;
|
|
}
|
|
|
|
const ScrollStyles& GetViewportScrollStylesOverride() const {
|
|
return mViewportScrollStyles;
|
|
}
|
|
|
|
/**
|
|
* Check whether the given element would propagate its scrollbar styles to the
|
|
* viewport in non-paginated mode.
|
|
*/
|
|
bool ElementWouldPropagateScrollStyles(const mozilla::dom::Element&);
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
bool BidiEnabled() 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; }
|
|
|
|
enum class InteractionType : uint32_t {
|
|
ClickInteraction,
|
|
KeyInteraction,
|
|
MouseMoveInteraction,
|
|
ScrollInteraction
|
|
};
|
|
|
|
void RecordInteractionTime(InteractionType aType,
|
|
const mozilla::TimeStamp& aTimeStamp);
|
|
|
|
void DisableInteractionTimeRecording() { mInteractionTimeEnabled = false; }
|
|
|
|
// Mohamed
|
|
|
|
/**
|
|
* Set the Bidi options for the presentation context
|
|
*/
|
|
void SetBidi(uint32_t aBidiOptions);
|
|
|
|
/**
|
|
* Get the Bidi options for the presentation context
|
|
* Not inline so consumers of nsPresContext are not forced to
|
|
* include Document.
|
|
*/
|
|
uint32_t GetBidi() const;
|
|
|
|
/*
|
|
* Obtain a native theme for rendering our widgets (both form controls and
|
|
* html)
|
|
*
|
|
* Guaranteed to return non-null.
|
|
*/
|
|
nsITheme* Theme() MOZ_NONNULL_RETURN {
|
|
if (MOZ_LIKELY(mTheme)) {
|
|
return mTheme;
|
|
}
|
|
return EnsureTheme();
|
|
}
|
|
|
|
/*
|
|
* 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();
|
|
|
|
/** Printing methods below should only be used for Medium() == print **/
|
|
void SetPrintSettings(nsIPrintSettings* aPrintSettings);
|
|
|
|
nsIPrintSettings* GetPrintSettings() { return mPrintSettings; }
|
|
|
|
/* 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; }
|
|
|
|
static nscoord GetBorderWidthForKeyword(unsigned int aBorderWidthKeyword) {
|
|
// This table maps border-width enums 'thin', 'medium', 'thick'
|
|
// to actual nscoord values.
|
|
static const nscoord kBorderWidths[] = {
|
|
CSSPixelsToAppUnits(1), CSSPixelsToAppUnits(3), CSSPixelsToAppUnits(5)};
|
|
MOZ_ASSERT(size_t(aBorderWidthKeyword) <
|
|
mozilla::ArrayLength(kBorderWidths));
|
|
|
|
return kBorderWidths[aBorderWidthKeyword];
|
|
}
|
|
|
|
gfxTextPerfMetrics* GetTextPerfMetrics() { return mTextPerf.get(); }
|
|
FontMatchingStats* GetFontMatchingStats() { return mFontStats.get(); }
|
|
|
|
bool IsDynamic() {
|
|
return (mType == eContext_PageLayout || mType == eContext_Galley);
|
|
}
|
|
bool IsScreen() {
|
|
return (mMedium == nsGkAtoms::screen || mType == eContext_PageLayout ||
|
|
mType == eContext_PrintPreview);
|
|
}
|
|
bool IsPrintingOrPrintPreview() {
|
|
return (mType == eContext_Print || mType == eContext_PrintPreview);
|
|
}
|
|
|
|
// Is this presentation in a chrome docshell?
|
|
bool IsChrome() const;
|
|
|
|
// Public API for native theme code to get style internals.
|
|
bool HasAuthorSpecifiedRules(const nsIFrame* aFrame,
|
|
uint32_t ruleTypeMask) const;
|
|
|
|
// 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.get(); }
|
|
|
|
void NotifyMissingFonts();
|
|
|
|
void FlushCounterStyles();
|
|
void MarkCounterStylesDirty();
|
|
|
|
void FlushFontFeatureValues();
|
|
void MarkFontFeatureValuesDirty() { mFontFeatureValuesDirty = true; }
|
|
|
|
// 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();
|
|
|
|
// Mark an area as invalidated, associated with a given transaction id
|
|
// (allocated by nsRefreshDriver::GetTransactionId). Invalidated regions will
|
|
// be dispatched to MozAfterPaint events when NotifyDidPaintForSubtree is
|
|
// called for the transaction id (or any higher id).
|
|
void NotifyInvalidation(TransactionId aTransactionId, const nsRect& aRect);
|
|
// aRect is in device pixels
|
|
void NotifyInvalidation(TransactionId aTransactionId, const nsIntRect& aRect);
|
|
void NotifyDidPaintForSubtree(
|
|
TransactionId aTransactionId = TransactionId{0},
|
|
const mozilla::TimeStamp& aTimeStamp = mozilla::TimeStamp());
|
|
void NotifyRevokingDidPaint(TransactionId aTransactionId);
|
|
void FireDOMPaintEvent(nsTArray<nsRect>* aList, TransactionId aTransactionId,
|
|
mozilla::TimeStamp aTimeStamp = mozilla::TimeStamp());
|
|
|
|
// 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();
|
|
|
|
/**
|
|
* Returns the RestyleManager's restyle generation counter.
|
|
*/
|
|
uint64_t GetRestyleGeneration() const;
|
|
uint64_t GetUndisplayedRestyleGeneration() const;
|
|
|
|
/**
|
|
* Returns whether there are any pending restyles or reflows.
|
|
*/
|
|
bool HasPendingRestyleOrReflow();
|
|
|
|
/**
|
|
* 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
|
|
* PresShell::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; }
|
|
/**
|
|
* Sets a flag that will trip a reflow interrupt. This only bypasses the
|
|
* interrupt timeout and the pending event check; other checks such as whether
|
|
* interrupts are enabled and the interrupt check skipping still take effect.
|
|
*/
|
|
void SetPendingInterruptFromTest() { mPendingInterruptFromTest = true; }
|
|
|
|
/**
|
|
* 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);
|
|
|
|
virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
|
|
virtual size_t SizeOfIncludingThis(
|
|
mozilla::MallocSizeOf aMallocSizeOf) const {
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
/**
|
|
* Deprecated. Please use the InProcess or CrossProcess variants
|
|
* to specify which behaviour you want.
|
|
*/
|
|
bool IsRootContentDocument() const;
|
|
|
|
/**
|
|
* We are a root content document in process if: we are not a resource doc, we
|
|
* are not chrome, and we either have no parent in the current process or our
|
|
* parent is chrome.
|
|
*/
|
|
bool IsRootContentDocumentInProcess() const;
|
|
|
|
/**
|
|
* We are a root content document cross process if: we are not a resource doc,
|
|
* we are not chrome, and we either have no parent in any process or our
|
|
* parent is chrome.
|
|
*/
|
|
bool IsRootContentDocumentCrossProcess() const;
|
|
|
|
bool HadNonBlankPaint() const { return mHadNonBlankPaint; }
|
|
bool HadContentfulPaint() const { return mHadContentfulPaint; }
|
|
void NotifyNonBlankPaint();
|
|
void NotifyContentfulPaint();
|
|
void NotifyDOMContentFlushed();
|
|
|
|
bool UsesExChUnits() const { return mUsesExChUnits; }
|
|
|
|
void SetUsesExChUnits(bool aValue) { mUsesExChUnits = aValue; }
|
|
|
|
bool IsDeviceSizePageSize();
|
|
|
|
bool HasWarnedAboutPositionedTableParts() const {
|
|
return mHasWarnedAboutPositionedTableParts;
|
|
}
|
|
|
|
void SetHasWarnedAboutPositionedTableParts() {
|
|
mHasWarnedAboutPositionedTableParts = true;
|
|
}
|
|
|
|
bool HasWarnedAboutTooLargeDashedOrDottedRadius() const {
|
|
return mHasWarnedAboutTooLargeDashedOrDottedRadius;
|
|
}
|
|
|
|
void SetHasWarnedAboutTooLargeDashedOrDottedRadius() {
|
|
mHasWarnedAboutTooLargeDashedOrDottedRadius = true;
|
|
}
|
|
|
|
nsBidi& GetBidiEngine();
|
|
|
|
gfxFontFeatureValueSet* GetFontFeatureValuesLookup() const {
|
|
return mFontFeatureValuesLookup;
|
|
}
|
|
|
|
protected:
|
|
friend class nsRunnableMethod<nsPresContext>;
|
|
void ThemeChangedInternal();
|
|
void RefreshSystemMetrics();
|
|
|
|
// update device context's resolution from the widget
|
|
void UIResolutionChangedInternal();
|
|
|
|
// if aScale > 0.0, use it as resolution scale factor to the device context
|
|
// (otherwise get it from the widget)
|
|
void UIResolutionChangedInternalScale(double aScale);
|
|
|
|
void SetImgAnimations(nsIContent* aParent, uint16_t aMode);
|
|
void SetSMILAnimations(mozilla::dom::Document* aDoc, uint16_t aNewMode,
|
|
uint16_t aOldMode);
|
|
|
|
static void PreferenceChanged(const char* aPrefName, void* aSelf);
|
|
void PreferenceChanged(const char* aPrefName);
|
|
|
|
void UpdateAfterPreferencesChanged();
|
|
void DispatchPrefChangedRunnableIfNeeded();
|
|
|
|
void GetUserPreferences();
|
|
|
|
void UpdateCharSet(NotNull<const Encoding*> aCharSet);
|
|
|
|
public:
|
|
// Used by the PresShell to force a reflow when some aspect of font info
|
|
// has been updated, potentially affecting font selection and layout.
|
|
void ForceReflowForFontInfoUpdate();
|
|
|
|
/**
|
|
* 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();
|
|
|
|
void InvalidatePaintedLayers();
|
|
|
|
uint32_t GetNextFrameRateMultiplier() const {
|
|
return mNextFrameRateMultiplier;
|
|
}
|
|
|
|
void DidUseFrameRateMultiplier() {
|
|
if (!mNextFrameRateMultiplier) {
|
|
mNextFrameRateMultiplier = 1;
|
|
} else if (mNextFrameRateMultiplier < 8) {
|
|
mNextFrameRateMultiplier = mNextFrameRateMultiplier * 2;
|
|
}
|
|
}
|
|
|
|
protected:
|
|
// May be called multiple times (unlink, destructor)
|
|
void Destroy();
|
|
|
|
void AppUnitsPerDevPixelChanged();
|
|
|
|
bool HavePendingInputEvent();
|
|
|
|
// 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,
|
|
const char* aName, uint32_t aDelay);
|
|
|
|
struct TransactionInvalidations {
|
|
TransactionId mTransactionId;
|
|
nsTArray<nsRect> mInvalidations;
|
|
bool mIsWaitingForPreviousTransaction = false;
|
|
};
|
|
TransactionInvalidations* GetInvalidations(TransactionId aTransactionId);
|
|
|
|
// This should be called only when we update mVisibleArea or
|
|
// mDynamicToolbarMaxHeight or `app units per device pixels` changes.
|
|
void AdjustSizeForViewportUnits();
|
|
|
|
// 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).
|
|
|
|
// the PresShell owns a strong reference to the nsPresContext, and is
|
|
// responsible for nulling this pointer before it is destroyed
|
|
mozilla::PresShell* MOZ_NON_OWNING_REF mPresShell; // [WEAK]
|
|
RefPtr<mozilla::dom::Document> 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<mozilla::AnimationEventDispatcher> mAnimationEventDispatcher;
|
|
RefPtr<mozilla::EffectCompositor> mEffectCompositor;
|
|
mozilla::UniquePtr<nsTransitionManager> mTransitionManager;
|
|
mozilla::UniquePtr<nsAnimationManager> mAnimationManager;
|
|
mozilla::UniquePtr<mozilla::RestyleManager> mRestyleManager;
|
|
RefPtr<mozilla::CounterStyleManager> mCounterStyleManager;
|
|
const nsStaticAtom* mMedium;
|
|
RefPtr<gfxFontFeatureValueSet> mFontFeatureValuesLookup;
|
|
|
|
// TODO(emilio): Maybe lazily create and put under a UniquePtr if this grows a
|
|
// lot?
|
|
MediaEmulationData mMediaEmulationData;
|
|
|
|
float mSystemFontScale; // Internal text zoom factor, defaults to 1.0
|
|
float mTextZoom; // Text zoom, defaults to 1.0
|
|
float mEffectiveTextZoom; // Text zoom * system font scale
|
|
float mFullZoom; // Page zoom, defaults to 1.0
|
|
gfxSize mLastFontInflationScreenSize;
|
|
|
|
int32_t mCurAppUnitsPerDevPixel;
|
|
int32_t mAutoQualityMinFontSizePixelsPref;
|
|
|
|
nsCOMPtr<nsITheme> mTheme;
|
|
nsCOMPtr<nsIPrintSettings> mPrintSettings;
|
|
|
|
mozilla::UniquePtr<nsBidi> mBidiEngine;
|
|
|
|
AutoTArray<TransactionInvalidations, 4> mTransactions;
|
|
|
|
// text performance metrics
|
|
mozilla::UniquePtr<gfxTextPerfMetrics> mTextPerf;
|
|
|
|
mozilla::UniquePtr<FontMatchingStats> mFontStats;
|
|
|
|
mozilla::UniquePtr<gfxMissingFontRecorder> mMissingFonts;
|
|
|
|
nsRect mVisibleArea;
|
|
// This value is used to resolve viewport units.
|
|
// On mobile this size is including the dynamic toolbar maximum height below.
|
|
// On desktops this size is pretty much the same as |mVisibleArea|.
|
|
nsSize mSizeForViewportUnits;
|
|
// The maximum height of the dynamic toolbar on mobile.
|
|
mozilla::ScreenIntCoord mDynamicToolbarMaxHeight;
|
|
mozilla::ScreenIntCoord mDynamicToolbarHeight;
|
|
// Safe area insets support
|
|
mozilla::ScreenIntMargin mSafeAreaInsets;
|
|
nsSize mPageSize;
|
|
float mPageScale;
|
|
float mPPScale;
|
|
|
|
// This is a non-owning pointer. May be null. If non-null, it's guaranteed to
|
|
// be pointing to an element that's still alive, because we'll reset it in
|
|
// UpdateViewportScrollStylesOverride() as part of the cleanup code when
|
|
// this element is removed from the document. (For <body> and the root
|
|
// element, this call happens in nsCSSFrameConstructor::ContentRemoved(). For
|
|
// fullscreen elements, it happens in the fullscreen-specific cleanup invoked
|
|
// by Element::UnbindFromTree().)
|
|
mozilla::dom::Element* MOZ_NON_OWNING_REF mViewportScrollOverrideElement;
|
|
|
|
// Counters for tests and tools that want to detect frame construction
|
|
// or reflow.
|
|
uint64_t mElementsRestyled;
|
|
uint64_t mFramesConstructed;
|
|
uint64_t mFramesReflowed;
|
|
|
|
mozilla::TimeStamp mReflowStartTime;
|
|
|
|
Maybe<TransactionId> mFirstContentfulPaintTransactionId;
|
|
|
|
mozilla::UniquePtr<mozilla::MediaFeatureChange>
|
|
mPendingMediaFeatureValuesChange;
|
|
|
|
// Time of various first interaction types, used to report time from
|
|
// first paint of the top level content pres shell to first interaction.
|
|
mozilla::TimeStamp mFirstNonBlankPaintTime;
|
|
mozilla::TimeStamp mFirstClickTime;
|
|
mozilla::TimeStamp mFirstKeyTime;
|
|
mozilla::TimeStamp mFirstMouseMoveTime;
|
|
mozilla::TimeStamp mFirstScrollTime;
|
|
|
|
// last time we did a full style flush
|
|
mozilla::TimeStamp mLastStyleUpdateForAllAnimations;
|
|
|
|
nsChangeHint mChangeHintForPrefChange;
|
|
|
|
uint32_t mInterruptChecksToSkip;
|
|
|
|
// During page load we use slower frame rate.
|
|
uint32_t mNextFrameRateMultiplier;
|
|
|
|
ScrollStyles mViewportScrollStyles;
|
|
|
|
uint16_t mImageAnimationMode;
|
|
uint16_t mImageAnimationModePref;
|
|
|
|
nsPresContextType mType;
|
|
|
|
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:
|
|
unsigned mInteractionTimeEnabled : 1;
|
|
unsigned mHasPendingInterrupt : 1;
|
|
unsigned mPendingInterruptFromTest : 1;
|
|
unsigned mInterruptsEnabled : 1;
|
|
unsigned mSendAfterPaintToContent : 1;
|
|
unsigned mDrawImageBackground : 1;
|
|
unsigned mDrawColorBackground : 1;
|
|
unsigned mNeverAnimate : 1;
|
|
unsigned mPaginated : 1;
|
|
unsigned mCanPaginatedScroll : 1;
|
|
unsigned mDoScaledTwips : 1;
|
|
unsigned mIsRootPaginatedDocument : 1;
|
|
unsigned mPrefBidiDirection : 1;
|
|
unsigned mPrefScrollbarSide : 2;
|
|
unsigned mPendingThemeChanged : 1;
|
|
unsigned mPendingUIResolutionChanged : 1;
|
|
unsigned mPostedPrefChangedRunnable : 1;
|
|
|
|
// Are we currently drawing an SVG glyph?
|
|
unsigned mIsGlyph : 1;
|
|
|
|
// Does the associated document use ex or ch units?
|
|
//
|
|
// TODO(emilio): It's a bit weird that this lives here but all the other
|
|
// relevant bits live in Device on the rust side.
|
|
unsigned mUsesExChUnits : 1;
|
|
|
|
// Is the current mCounterStyleManager valid?
|
|
unsigned mCounterStylesDirty : 1;
|
|
|
|
// Is the current mFontFeatureValuesLookup valid?
|
|
unsigned mFontFeatureValuesDirty : 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;
|
|
|
|
// 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;
|
|
|
|
unsigned mHasWarnedAboutTooLargeDashedOrDottedRadius : 1;
|
|
|
|
// Have we added quirk.css to the style set?
|
|
unsigned mQuirkSheetAdded : 1;
|
|
|
|
// Has NotifyNonBlankPaint been called on this PresContext?
|
|
unsigned mHadNonBlankPaint : 1;
|
|
// Has NotifyContentfulPaint been called on this PresContext?
|
|
unsigned mHadContentfulPaint : 1;
|
|
// Has NotifyDidPaintForSubtree been called for a contentful paint?
|
|
unsigned mHadContentfulPaintComposite : 1;
|
|
|
|
#ifdef DEBUG
|
|
unsigned mInitialized : 1;
|
|
#endif
|
|
|
|
protected:
|
|
virtual ~nsPresContext();
|
|
|
|
void LastRelease();
|
|
|
|
nsITheme* EnsureTheme();
|
|
|
|
#ifdef DEBUG
|
|
private:
|
|
friend struct nsAutoLayoutPhase;
|
|
mozilla::EnumeratedArray<nsLayoutPhase, nsLayoutPhase::COUNT, uint32_t>
|
|
mLayoutPhaseCount;
|
|
|
|
public:
|
|
uint32_t LayoutPhaseCount(nsLayoutPhase aPhase) {
|
|
return mLayoutPhaseCount[aPhase];
|
|
}
|
|
#endif
|
|
};
|
|
|
|
class nsRootPresContext final : public nsPresContext {
|
|
public:
|
|
nsRootPresContext(mozilla::dom::Document* aDocument, nsPresContextType aType);
|
|
virtual ~nsRootPresContext();
|
|
|
|
/**
|
|
* 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.
|
|
* aBuilder and aList can be null. This indicates that all plugins are
|
|
* hidden because we're in a background tab.
|
|
*/
|
|
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; }
|
|
|
|
/**
|
|
* 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 mozilla::Runnable {
|
|
public:
|
|
explicit RunWillPaintObservers(nsRootPresContext* aPresContext)
|
|
: Runnable("nsPresContextType::RunWillPaintObservers"),
|
|
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> mApplyPluginGeometryTimer;
|
|
nsTHashtable<nsRefPtrHashKey<nsIContent>> mRegisteredPlugins;
|
|
nsTArray<nsCOMPtr<nsIRunnable>> mWillPaintObservers;
|
|
nsRevocableEventPtr<RunWillPaintObservers> mWillPaintFallbackEvent;
|
|
};
|
|
|
|
#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___ */
|