The Tor Browser: layout/xul/nsResizerFrame.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef nsResizerFrame_h___

     6 #define nsResizerFrame_h___

     8 #include "mozilla/Attributes.h"

     9 #include "mozilla/EventForwards.h"

    10 #include "nsTitleBarFrame.h"

    12 class nsIBaseWindow;

    13 class nsMenuPopupFrame;

    15 class nsResizerFrame : public nsTitleBarFrame

    16 {

    17 protected:

    18   struct Direction {

    19     int8_t mHorizontal;

    20     int8_t mVertical;

    21   };

    23 public:

    24   NS_DECL_FRAMEARENA_HELPERS

    26   friend nsIFrame* NS_NewResizerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    28   nsResizerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    30   virtual nsresult HandleEvent(nsPresContext* aPresContext,

    31                                mozilla::WidgetGUIEvent* aEvent,

    32                                nsEventStatus* aEventStatus) MOZ_OVERRIDE;

    34   virtual void MouseClicked(nsPresContext* aPresContext,

    35                             mozilla::WidgetMouseEvent* aEvent) MOZ_OVERRIDE;

    37 protected:

    38   nsIContent* GetContentToResize(nsIPresShell* aPresShell, nsIBaseWindow** aWindow);

    40   Direction GetDirection();

    42   /**

    43    * Adjust the window position and size in a direction according to the mouse

    44    * movement and the resizer direction. The minimum and maximum size is used

    45    * to constrain the size.

    46    *

    47    * @param aPos left or top position

    48    * @param aSize width or height

    49    * @param aMinSize minimum width or height

    50    * @param aMacSize maximum width or height

    51    * @param aMovement the amount the mouse was moved

    52    * @param aResizerDirection resizer direction returned by GetDirection

    53    */

    54   static void AdjustDimensions(int32_t* aPos, int32_t* aSize,

    55                                int32_t aMinSize, int32_t aMaxSize,

    56                                int32_t aMovement, int8_t aResizerDirection);

    58   struct SizeInfo {

    59     nsString width, height;

    60   };

    61   static void SizeInfoDtorFunc(void *aObject, nsIAtom *aPropertyName,

    62                                void *aPropertyValue, void *aData);

    63   static void ResizeContent(nsIContent* aContent, const Direction& aDirection,

    64                             const SizeInfo& aSizeInfo, SizeInfo* aOriginalSizeInfo);

    65   static void MaybePersistOriginalSize(nsIContent* aContent, const SizeInfo& aSizeInfo);

    66   static void RestoreOriginalSize(nsIContent* aContent);

    68 protected:

    69 	nsIntRect mMouseDownRect;

    70 	nsIntPoint mMouseDownPoint;

    71 }; // class nsResizerFrame

    73 #endif /* nsResizerFrame_h___ */

The Tor Browser / file revision

layout/xul/nsResizerFrame.h@97036ab72558

layout/xul/nsResizerFrame.h