71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef MobileViewportManager_h_
|
|
#define MobileViewportManager_h_
|
|
|
|
#include "mozilla/Maybe.h"
|
|
#include "nsIDOMEventListener.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIObserver.h"
|
|
#include "Units.h"
|
|
|
|
class nsIDOMEventTarget;
|
|
class nsIDocument;
|
|
class nsIPresShell;
|
|
|
|
class MobileViewportManager final : public nsIDOMEventListener
|
|
, public nsIObserver
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIDOMEVENTLISTENER
|
|
NS_DECL_NSIOBSERVER
|
|
|
|
MobileViewportManager(nsIPresShell* aPresShell,
|
|
nsIDocument* aDocument);
|
|
void Destroy();
|
|
|
|
/* Notify the MobileViewportManager that a reflow was requested in the
|
|
* presShell.*/
|
|
void RequestReflow();
|
|
|
|
/* Notify the MobileViewportManager that the resolution on the presShell was
|
|
* updated, and the SPCSPS needs to be updated. */
|
|
void ResolutionUpdated();
|
|
|
|
private:
|
|
~MobileViewportManager();
|
|
|
|
/* Main helper method to update the CSS viewport and any other properties that
|
|
* need updating. */
|
|
void RefreshViewportSize(bool aForceAdjustResolution);
|
|
|
|
/* Secondary main helper method to update just the SPCSPS. */
|
|
void RefreshSPCSPS();
|
|
|
|
/* Updates the presShell resolution and returns the new zoom. */
|
|
mozilla::CSSToScreenScale UpdateResolution(const nsViewportInfo& aViewportInfo,
|
|
const mozilla::ScreenIntSize& aDisplaySize,
|
|
const mozilla::CSSSize& aViewport,
|
|
const mozilla::Maybe<float>& aDisplayWidthChangeRatio);
|
|
/* Updates the scroll-position-clamping scrollport size */
|
|
void UpdateSPCSPS(const mozilla::ScreenIntSize& aDisplaySize,
|
|
const mozilla::CSSToScreenScale& aZoom);
|
|
/* Updates the displayport margins for the presShell's root scrollable frame */
|
|
void UpdateDisplayPortMargins();
|
|
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
nsIPresShell* MOZ_NON_OWNING_REF mPresShell; // raw ref since the presShell owns this
|
|
nsCOMPtr<nsIDOMEventTarget> mEventTarget;
|
|
bool mIsFirstPaint;
|
|
bool mPainted;
|
|
mozilla::LayoutDeviceIntSize mDisplaySize;
|
|
mozilla::CSSSize mMobileViewportSize;
|
|
};
|
|
|
|
#endif
|
|
|