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294 lines
12 KiB
C++
294 lines
12 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 Communicator client 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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/**
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Eric D Vaughan
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nsBoxFrame is a frame that can lay its children out either vertically or horizontally.
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It lays them out according to a min max or preferred size.
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**/
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#ifndef nsBoxFrame_h___
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#define nsBoxFrame_h___
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#include "nsCOMPtr.h"
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#include "nsContainerFrame.h"
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class nsBoxLayoutState;
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// flags from box
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#define NS_STATE_BOX_CHILD_RESERVED NS_FRAME_STATE_BIT(20)
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#define NS_STATE_STACK_NOT_POSITIONED NS_FRAME_STATE_BIT(21)
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//#define NS_STATE_IS_HORIZONTAL NS_FRAME_STATE_BIT(22) moved to nsIFrame.h
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#define NS_STATE_AUTO_STRETCH NS_FRAME_STATE_BIT(23)
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//#define NS_STATE_IS_ROOT NS_FRAME_STATE_BIT(24) moved to nsBox.h
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#define NS_STATE_CURRENTLY_IN_DEBUG NS_FRAME_STATE_BIT(25)
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//#define NS_STATE_SET_TO_DEBUG NS_FRAME_STATE_BIT(26) moved to nsBox.h
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//#define NS_STATE_DEBUG_WAS_SET NS_FRAME_STATE_BIT(27) moved to nsBox.h
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// NS_FRAME_STATE_BIT(28) not used anymore
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#define NS_STATE_BOX_WRAPS_KIDS_IN_BLOCK NS_FRAME_STATE_BIT(29)
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#define NS_STATE_EQUAL_SIZE NS_FRAME_STATE_BIT(30)
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//#define NS_STATE_IS_DIRECTION_NORMAL NS_FRAME_STATE_BIT(31) moved to nsIFrame.h
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nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext,
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PRBool aIsRoot,
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nsIBoxLayout* aLayoutManager);
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nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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class nsBoxFrame : public nsContainerFrame
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{
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public:
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NS_DECL_FRAMEARENA_HELPERS
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friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext,
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PRBool aIsRoot,
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nsIBoxLayout* aLayoutManager);
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friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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// gets the rect inside our border and debug border. If you wish to paint inside a box
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// call this method to get the rect so you don't draw on the debug border or outer border.
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// ------ nsIBox -------------
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NS_IMETHOD SetLayoutManager(nsIBoxLayout* aLayout);
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NS_IMETHOD GetLayoutManager(nsIBoxLayout** aLayout);
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NS_IMETHOD RelayoutChildAtOrdinal(nsBoxLayoutState& aState, nsIBox* aChild);
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virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState);
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virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState);
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virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState);
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virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState);
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virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState);
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#ifdef DEBUG_LAYOUT
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NS_IMETHOD SetDebug(nsBoxLayoutState& aBoxLayoutState, PRBool aDebug);
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NS_IMETHOD GetDebug(PRBool& aDebug);
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#endif
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virtual Valignment GetVAlign() const { return mValign; }
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virtual Halignment GetHAlign() const { return mHalign; }
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NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState);
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virtual PRBool GetMouseThrough() const;
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virtual PRBool ComputesOwnOverflowArea() { return PR_FALSE; }
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// ----- child and sibling operations ---
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// ----- public methods -------
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NS_IMETHOD Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* asPrevInFlow);
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NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType);
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virtual void MarkIntrinsicWidthsDirty();
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virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
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virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD AppendFrames(nsIAtom* aListName,
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nsFrameList& aFrameList);
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NS_IMETHOD InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList);
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NS_IMETHOD RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame);
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virtual nsIFrame* GetContentInsertionFrame();
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NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
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nsFrameList& aChildList);
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virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext);
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virtual nsIAtom* GetType() const;
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virtual PRBool IsFrameOfType(PRUint32 aFlags) const
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{
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// record that children that are ignorable whitespace should be excluded
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// (When content was loaded via the XUL content sink, it's already
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// been excluded, but we need this for when the XUL namespace is used
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// in other MIME types or when the XUL CSS display types are used with
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// non-XUL elements.)
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// This is bogus, but it's what we've always done.
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// (Given that we're replaced, we need to say we're a replaced element
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// that contains a block so nsHTMLReflowState doesn't tell us to be
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// NS_INTRINSICSIZE wide.)
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return nsContainerFrame::IsFrameOfType(aFlags &
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~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock | eXULBox |
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nsIFrame::eExcludesIgnorableWhitespace));
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}
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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NS_IMETHOD DidReflow(nsPresContext* aPresContext,
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const nsHTMLReflowState* aReflowState,
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nsDidReflowStatus aStatus);
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virtual PRBool HonorPrintBackgroundSettings();
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virtual ~nsBoxFrame();
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nsBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, PRBool aIsRoot = PR_FALSE, nsIBoxLayout* aLayoutManager = nsnull);
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// if aIsPopup is true, then the view is for a popup. In this case,
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// the view is added a child of the root view, and is initially hidden
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static nsresult CreateViewForFrame(nsPresContext* aPresContext,
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nsIFrame* aChild,
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nsStyleContext* aStyleContext,
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PRBool aForce,
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PRBool aIsPopup = PR_FALSE);
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// virtual so nsStackFrame, nsButtonBoxFrame, nsSliderFrame and nsMenuFrame
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// can override it
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NS_IMETHOD BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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#ifdef DEBUG_LAYOUT
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virtual void SetDebugOnChildList(nsBoxLayoutState& aState, nsIBox* aChild, PRBool aDebug);
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nsresult DisplayDebugInfoFor(nsIBox* aBox,
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nsPoint& aPoint);
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#endif
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static nsresult LayoutChildAt(nsBoxLayoutState& aState, nsIBox* aBox, const nsRect& aRect);
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/**
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* Utility method to redirect events on descendants to this frame.
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* Supports 'allowevents' attribute on descendant elements to allow those
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* elements and their descendants to receive events.
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*/
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nsresult WrapListsInRedirector(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aIn,
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const nsDisplayListSet& aOut);
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/**
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* This defaults to true, but some box frames (nsListBoxBodyFrame for
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* example) don't support ordinals in their children.
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*/
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virtual PRBool SupportsOrdinalsInChildren();
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protected:
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#ifdef DEBUG_LAYOUT
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virtual void GetBoxName(nsAutoString& aName);
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void PaintXULDebugBackground(nsIRenderingContext& aRenderingContext,
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nsPoint aPt);
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void PaintXULDebugOverlay(nsIRenderingContext& aRenderingContext,
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nsPoint aPt);
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#endif
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virtual PRBool GetInitialEqualSize(PRBool& aEqualSize);
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virtual void GetInitialOrientation(PRBool& aIsHorizontal);
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virtual void GetInitialDirection(PRBool& aIsNormal);
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virtual PRBool GetInitialHAlignment(Halignment& aHalign);
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virtual PRBool GetInitialVAlignment(Valignment& aValign);
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virtual PRBool GetInitialAutoStretch(PRBool& aStretch);
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virtual void DestroyFrom(nsIFrame* aDestructRoot);
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nsSize mPrefSize;
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nsSize mMinSize;
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nsSize mMaxSize;
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nscoord mFlex;
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nscoord mAscent;
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nsCOMPtr<nsIBoxLayout> mLayoutManager;
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protected:
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nsresult RegUnregAccessKey(PRBool aDoReg);
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NS_HIDDEN_(void) CheckBoxOrder(nsBoxLayoutState& aState);
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private:
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#ifdef DEBUG_LAYOUT
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nsresult SetDebug(nsPresContext* aPresContext, PRBool aDebug);
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PRBool GetInitialDebug(PRBool& aDebug);
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void GetDebugPref(nsPresContext* aPresContext);
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void GetDebugBorder(nsMargin& aInset);
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void GetDebugPadding(nsMargin& aInset);
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void GetDebugMargin(nsMargin& aInset);
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nsresult GetFrameSizeWithMargin(nsIBox* aBox, nsSize& aSize);
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void PixelMarginToTwips(nsPresContext* aPresContext, nsMargin& aMarginPixels);
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void GetValue(nsPresContext* aPresContext, const nsSize& a, const nsSize& b, char* value);
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void GetValue(nsPresContext* aPresContext, PRInt32 a, PRInt32 b, char* value);
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void DrawSpacer(nsPresContext* aPresContext, nsIRenderingContext& aRenderingContext, PRBool aHorizontal, PRInt32 flex, nscoord x, nscoord y, nscoord size, nscoord spacerSize);
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void DrawLine(nsIRenderingContext& aRenderingContext, PRBool aHorizontal, nscoord x1, nscoord y1, nscoord x2, nscoord y2);
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void FillRect(nsIRenderingContext& aRenderingContext, PRBool aHorizontal, nscoord x, nscoord y, nscoord width, nscoord height);
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#endif
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void UpdateMouseThrough();
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void CacheAttributes();
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// instance variables.
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Halignment mHalign;
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Valignment mValign;
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eMouseThrough mMouseThrough;
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#ifdef DEBUG_LAYOUT
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static PRBool gDebug;
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static nsIBox* mDebugChild;
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#endif
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}; // class nsBoxFrame
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#endif
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