mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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9ca4b64c4b
Change AppUnitsPerDevPixel to return a PRUint32. It should never return negative values and it is used in initializer lists that expect unsigned values, which is not valid c++0x. I have also change the member variables to be unsigned and converted a sentinel value to use 0 instead of -1. UINT32_MAX should work fine too if you like it better.
320 lines
11 KiB
C++
320 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsViewManager_h___
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#define nsViewManager_h___
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#include "nsCOMPtr.h"
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#include "nsIViewManager.h"
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#include "nsCRT.h"
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#include "nsITimer.h"
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#include "prtime.h"
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#include "prinrval.h"
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#include "nsVoidArray.h"
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#include "nsThreadUtils.h"
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#include "nsView.h"
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#include "nsIViewObserver.h"
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#include "nsDeviceContext.h"
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/**
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Invalidation model:
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1) Callers call into the view manager and ask it to update a view.
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2) The view manager finds the "right" widget for the view, henceforth called
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the root widget.
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3) The view manager traverses descendants of the root widget and for each
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one that needs invalidation either
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a) Calls Invalidate() on the widget (no batching)
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or
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b) Stores the rect to invalidate on the widget's view (batching)
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// XXXbz we want to change this a bit. See bug 243726
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4) When batching, the call to end the batch either processes the pending
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Invalidate() calls on the widgets or posts an event to do so.
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It's important to note that widgets associated to views outside this view
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manager can end up being invalidated during step 3. Therefore, the end of a
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view update batch really needs to traverse the entire view tree, to ensure
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that those invalidates happen.
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To cope with this, invalidate event processing and view update batch
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handling should only happen on the root viewmanager. This means the root
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view manager is the only thing keeping track of mUpdateCnt. As a result,
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Composite() calls should also be forwarded to the root view manager.
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*/
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class nsInvalidateEvent;
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class nsViewManager : public nsIViewManager {
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public:
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nsViewManager();
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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NS_DECL_ISUPPORTS
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NS_IMETHOD Init(nsDeviceContext* aContext);
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NS_IMETHOD_(nsIView*) CreateView(const nsRect& aBounds,
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const nsIView* aParent,
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nsViewVisibility aVisibilityFlag = nsViewVisibility_kShow);
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NS_IMETHOD_(nsIView*) GetRootView();
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NS_IMETHOD SetRootView(nsIView *aView);
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NS_IMETHOD GetWindowDimensions(nscoord *width, nscoord *height);
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NS_IMETHOD SetWindowDimensions(nscoord width, nscoord height);
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NS_IMETHOD FlushDelayedResize(PRBool aDoReflow);
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NS_IMETHOD Composite(void);
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NS_IMETHOD UpdateView(nsIView *aView, PRUint32 aUpdateFlags);
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NS_IMETHOD UpdateViewNoSuppression(nsIView *aView, const nsRect &aRect,
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PRUint32 aUpdateFlags);
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NS_IMETHOD UpdateAllViews(PRUint32 aUpdateFlags);
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NS_IMETHOD DispatchEvent(nsGUIEvent *aEvent,
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nsIView* aTargetView, nsEventStatus* aStatus);
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NS_IMETHOD InsertChild(nsIView *parent, nsIView *child, nsIView *sibling,
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PRBool above);
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NS_IMETHOD InsertChild(nsIView *parent, nsIView *child,
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PRInt32 zindex);
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NS_IMETHOD RemoveChild(nsIView *parent);
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NS_IMETHOD MoveViewTo(nsIView *aView, nscoord aX, nscoord aY);
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NS_IMETHOD ResizeView(nsIView *aView, const nsRect &aRect, PRBool aRepaintExposedAreaOnly = PR_FALSE);
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NS_IMETHOD SetViewFloating(nsIView *aView, PRBool aFloating);
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NS_IMETHOD SetViewVisibility(nsIView *aView, nsViewVisibility aVisible);
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NS_IMETHOD SetViewZIndex(nsIView *aView, PRBool aAuto, PRInt32 aZIndex, PRBool aTopMost=PR_FALSE);
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virtual void SetViewObserver(nsIViewObserver *aObserver) { mObserver = aObserver; }
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virtual nsIViewObserver* GetViewObserver() { return mObserver; }
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NS_IMETHOD GetDeviceContext(nsDeviceContext *&aContext);
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virtual nsIViewManager* BeginUpdateViewBatch(void);
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NS_IMETHOD EndUpdateViewBatch(PRUint32 aUpdateFlags);
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NS_IMETHOD GetRootWidget(nsIWidget **aWidget);
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NS_IMETHOD ForceUpdate();
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NS_IMETHOD IsPainting(PRBool& aIsPainting);
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NS_IMETHOD GetLastUserEventTime(PRUint32& aTime);
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void ProcessInvalidateEvent();
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static PRUint32 gLastUserEventTime;
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/* Update the cached RootViewManager pointer on this view manager. */
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void InvalidateHierarchy();
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protected:
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virtual ~nsViewManager();
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private:
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void FlushPendingInvalidates();
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void ProcessPendingUpdates(nsView *aView, PRBool aDoInvalidate);
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/**
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* Call WillPaint() on all view observers under this vm root.
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*/
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void CallWillPaintOnObservers(PRBool aWillSendDidPaint);
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void CallDidPaintOnObservers();
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void ReparentChildWidgets(nsIView* aView, nsIWidget *aNewWidget);
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void ReparentWidgets(nsIView* aView, nsIView *aParent);
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void UpdateWidgetArea(nsView *aWidgetView, nsIWidget* aWidget,
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const nsRegion &aDamagedRegion,
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nsView* aIgnoreWidgetView);
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void UpdateViews(nsView *aView, PRUint32 aUpdateFlags);
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void TriggerRefresh(PRUint32 aUpdateFlags);
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// aView is the view for aWidget and aRegion is relative to aWidget.
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void Refresh(nsView *aView, nsIWidget *aWidget,
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const nsIntRegion& aRegion, PRUint32 aUpdateFlags);
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// aRootView is the view for aWidget, aRegion is relative to aRootView, and
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// aIntRegion is relative to aWidget.
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void RenderViews(nsView *aRootView, nsIWidget *aWidget,
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const nsRegion& aRegion, const nsIntRegion& aIntRegion,
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PRBool aPaintDefaultBackground, PRBool aWillSendDidPaint);
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void InvalidateRectDifference(nsView *aView, const nsRect& aRect, const nsRect& aCutOut, PRUint32 aUpdateFlags);
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void InvalidateHorizontalBandDifference(nsView *aView, const nsRect& aRect, const nsRect& aCutOut,
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PRUint32 aUpdateFlags, nscoord aY1, nscoord aY2, PRBool aInCutOut);
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// Utilities
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PRBool IsViewInserted(nsView *aView);
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/**
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* Function to recursively call Update() on all widgets belonging to
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* a view or its kids.
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*/
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void UpdateWidgetsForView(nsView* aView);
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/**
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* Intersects aRect with aView's bounds and then transforms it from aView's
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* coordinate system to the coordinate system of the widget attached to
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* aView.
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*/
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nsIntRect ViewToWidget(nsView *aView, const nsRect &aRect) const;
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void DoSetWindowDimensions(nscoord aWidth, nscoord aHeight);
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// Safety helpers
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void IncrementUpdateCount() {
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NS_ASSERTION(IsRootVM(),
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"IncrementUpdateCount called on non-root viewmanager");
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++mUpdateCnt;
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}
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void DecrementUpdateCount() {
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NS_ASSERTION(IsRootVM(),
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"DecrementUpdateCount called on non-root viewmanager");
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--mUpdateCnt;
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}
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PRInt32 UpdateCount() const {
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NS_ASSERTION(IsRootVM(),
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"DecrementUpdateCount called on non-root viewmanager");
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return mUpdateCnt;
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}
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void ClearUpdateCount() {
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NS_ASSERTION(IsRootVM(),
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"DecrementUpdateCount called on non-root viewmanager");
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mUpdateCnt = 0;
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}
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PRBool IsPainting() const {
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return RootViewManager()->mPainting;
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}
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void SetPainting(PRBool aPainting) {
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RootViewManager()->mPainting = aPainting;
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}
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nsresult UpdateView(nsIView *aView, const nsRect &aRect, PRUint32 aUpdateFlags);
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public: // NOT in nsIViewManager, so private to the view module
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nsView* GetRootViewImpl() const { return mRootView; }
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nsViewManager* RootViewManager() const { return mRootViewManager; }
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PRBool IsRootVM() const { return this == RootViewManager(); }
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nsEventStatus HandleEvent(nsView* aView, nsGUIEvent* aEvent);
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PRBool IsRefreshEnabled() { return RootViewManager()->mUpdateBatchCnt == 0; }
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// Call this when you need to let the viewmanager know that it now has
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// pending updates.
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void PostPendingUpdate() { RootViewManager()->mHasPendingUpdates = PR_TRUE; }
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PRUint32 AppUnitsPerDevPixel() const
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{
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return mContext->AppUnitsPerDevPixel();
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}
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private:
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nsRefPtr<nsDeviceContext> mContext;
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nsIViewObserver *mObserver;
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// The size for a resize that we delayed until the root view becomes
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// visible again.
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nsSize mDelayedResize;
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nsView *mRootView;
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// mRootViewManager is a strong ref unless it equals |this|. It's
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// never null (if we have no ancestors, it will be |this|).
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nsViewManager *mRootViewManager;
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nsRevocableEventPtr<nsInvalidateEvent> mInvalidateEvent;
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// The following members should not be accessed directly except by
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// the root view manager. Some have accessor functions to enforce
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// this, as noted.
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// Use IncrementUpdateCount(), DecrementUpdateCount(), UpdateCount(),
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// ClearUpdateCount() on the root viewmanager to access mUpdateCnt.
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PRInt32 mUpdateCnt;
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PRInt32 mUpdateBatchCnt;
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PRUint32 mUpdateBatchFlags;
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// Use IsPainting() and SetPainting() to access mPainting.
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PRPackedBool mPainting;
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PRPackedBool mRecursiveRefreshPending;
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PRPackedBool mHasPendingUpdates;
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PRPackedBool mInScroll;
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//from here to public should be static and locked... MMP
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static PRInt32 mVMCount; //number of viewmanagers
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//list of view managers
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static nsVoidArray *gViewManagers;
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void PostInvalidateEvent();
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};
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//when the refresh happens, should it be double buffered?
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#define NS_VMREFRESH_DOUBLE_BUFFER 0x0001
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class nsInvalidateEvent : public nsRunnable {
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public:
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nsInvalidateEvent(class nsViewManager *vm) : mViewManager(vm) {
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NS_ASSERTION(mViewManager, "null parameter");
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}
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void Revoke() { mViewManager = nsnull; }
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NS_IMETHOD Run() {
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if (mViewManager)
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mViewManager->ProcessInvalidateEvent();
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return NS_OK;
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}
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protected:
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class nsViewManager *mViewManager;
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};
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#endif /* nsViewManager_h___ */
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