gecko-dev/layout/xul/nsStackLayout.h
Masayuki Nakano f5737567dd Bug 1544343 - part 3: Make layout use mozilla::PresShell instead of nsIPresShell as far as possible r=emilio
This patch changes remaining things under `layout/`.  However, there are some
places which still need to use `nsIPresShell`.  That will be fixed in a
follow up bug.

Differential Revision: https://phabricator.services.mozilla.com/D27477

--HG--
extra : moz-landing-system : lando
2019-04-16 07:25:10 +00:00

55 lines
1.8 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
/**
Eric D Vaughan
A frame that can have multiple children. Only one child may be displayed at
one time. So the can be flipped though like a deck of cards.
**/
#ifndef nsStackLayout_h___
#define nsStackLayout_h___
#include "mozilla/Attributes.h"
#include "nsBoxLayout.h"
#include "nsCOMPtr.h"
#include "nsCoord.h"
nsresult NS_NewStackLayout(nsCOMPtr<nsBoxLayout>& aNewLayout);
class nsStackLayout : public nsBoxLayout {
public:
friend nsresult NS_NewStackLayout(nsCOMPtr<nsBoxLayout>& aNewLayout);
static void Shutdown();
nsStackLayout();
NS_IMETHOD XULLayout(nsIFrame* aBox, nsBoxLayoutState& aState) override;
virtual nsSize GetXULPrefSize(nsIFrame* aBox,
nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMinSize(nsIFrame* aBox,
nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMaxSize(nsIFrame* aBox,
nsBoxLayoutState& aBoxLayoutState) override;
virtual nscoord GetAscent(nsIFrame* aBox,
nsBoxLayoutState& aBoxLayoutState) override;
// get the child offsets for aChild and set them in aMargin. Returns a
// bitfield mask of the SPECIFIED_LEFT, SPECIFIED_RIGHT, SPECIFIED_TOP and
// SPECIFIED_BOTTOM offsets indicating which sides have been specified by
// attributes.
static uint8_t GetOffset(nsIFrame* aChild, nsMargin& aMargin);
private:
static nsBoxLayout* gInstance;
}; // class nsStackLayout
#endif