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On Chrome, visual viewport resize event is fired repeatedly during dynamic toolbar transitions and visual viewport height obtained by the VisualViewport API is also changed, but in terms of layout the height value is never used until the dynamic toolbar height reaches to zero or is changed from zero. The height used at the time is the height for vh units when the toolbar height reaches to zero and the ICB height when the toolbar height is changed from zero. To do so, we need to have another visual viewport size in parallel to the original one and use them depending on situations. Differential Revision: https://phabricator.services.mozilla.com/D52338 --HG-- extra : moz-landing-system : lando
68 lines
2.5 KiB
C++
68 lines
2.5 KiB
C++
/* 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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#ifndef MVMContext_h_
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#define MVMContext_h_
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#include "Units.h"
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#include "mozilla/Maybe.h"
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#include "nsISupportsImpl.h"
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#include "nsStringFwd.h"
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#include "nsViewportInfo.h"
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#include "PresShell.h"
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class nsIDOMEventListener;
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class nsIObserver;
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class nsISupports;
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namespace mozilla {
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/**
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* The interface MobileViewportManager uses to interface with its surroundings.
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* This mainly exists to facilitate testing MobileViewportManager in isolation
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* from the rest of Gecko.
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*/
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class MVMContext {
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MVMContext)
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protected:
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virtual ~MVMContext() {}
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public:
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virtual void AddEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture) = 0;
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virtual void RemoveEventListener(const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture) = 0;
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virtual void AddObserver(nsIObserver* aObserver, const char* aTopic,
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bool aOwnsWeak) = 0;
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virtual void RemoveObserver(nsIObserver* aObserver, const char* aTopic) = 0;
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virtual void Destroy() = 0;
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virtual nsViewportInfo GetViewportInfo(
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const ScreenIntSize& aDisplaySize) const = 0;
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virtual CSSToLayoutDeviceScale CSSToDevPixelScale() const = 0;
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virtual float GetResolution() const = 0;
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virtual bool SubjectMatchesDocument(nsISupports* aSubject) const = 0;
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virtual Maybe<CSSRect> CalculateScrollableRectForRSF() const = 0;
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virtual bool IsResolutionUpdatedByApz() const = 0;
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virtual LayoutDeviceMargin ScrollbarAreaToExcludeFromCompositionBounds()
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const = 0;
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virtual Maybe<LayoutDeviceIntSize> GetContentViewerSize() const = 0;
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virtual bool AllowZoomingForDocument() const = 0;
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virtual bool IsInReaderMode() const = 0;
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virtual bool IsDocumentLoading() const = 0;
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virtual void SetResolutionAndScaleTo(float aResolution,
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ResolutionChangeOrigin aOrigin) = 0;
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virtual void SetVisualViewportSize(const CSSSize& aSize) = 0;
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virtual void PostVisualViewportResizeEventByDynamicToolbar() = 0;
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virtual void UpdateDisplayPortMargins() = 0;
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virtual void Reflow(const CSSSize& aNewSize) = 0;
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};
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} // namespace mozilla
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#endif // MVMContext_h_
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