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/* -*- 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/. */
/**
Eric D Vaughan
nsBoxFrame is a frame that can lay its children out either vertically or horizontally.
It lays them out according to a min max or preferred size.
**/
#ifndef nsBoxFrame_h___
#define nsBoxFrame_h___
#include "mozilla/Attributes.h"
#include "nsCOMPtr.h"
#include "nsContainerFrame.h"
#include "nsBoxLayout.h"
class nsBoxLayoutState;
namespace mozilla {
namespace gfx {
class DrawTarget;
} // namespace gfx
} // namespace mozilla
nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext,
bool aIsRoot,
nsBoxLayout* aLayoutManager);
nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext);
class nsBoxFrame : public nsContainerFrame
{
protected:
typedef mozilla::gfx::DrawTarget DrawTarget;
public:
NS_DECL_FRAMEARENA_HELPERS
#ifdef DEBUG
NS_DECL_QUERYFRAME_TARGET(nsBoxFrame)
NS_DECL_QUERYFRAME
#endif
friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext,
bool aIsRoot,
nsBoxLayout* aLayoutManager);
friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext);
// gets the rect inside our border and debug border. If you wish to paint inside a box
// call this method to get the rect so you don't draw on the debug border or outer border.
virtual void SetXULLayoutManager(nsBoxLayout* aLayout) override { mLayoutManager = aLayout; }
virtual nsBoxLayout* GetXULLayoutManager() override { return mLayoutManager; }
virtual nsresult XULRelayoutChildAtOrdinal(nsIFrame* aChild) override;
virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMaxSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nscoord GetXULFlex() override;
virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
#ifdef DEBUG_LAYOUT
virtual nsresult SetXULDebug(nsBoxLayoutState& aBoxLayoutState, bool aDebug) override;
virtual nsresult GetXULDebug(bool& aDebug) override;
#endif
virtual Valignment GetXULVAlign() const override { return mValign; }
virtual Halignment GetXULHAlign() const override { return mHalign; }
NS_IMETHOD DoXULLayout(nsBoxLayoutState& aBoxLayoutState) override;
virtual bool ComputesOwnOverflowArea() override { return false; }
// ----- child and sibling operations ---
// ----- public methods -------
virtual void Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
virtual nsresult AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType) override;
virtual void MarkIntrinsicISizesDirty() override;
virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
virtual void Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
virtual void SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList) override;
virtual void AppendFrames(ChildListID aListID,
nsFrameList& aFrameList) override;
virtual void InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList) override;
virtual void RemoveFrame(ChildListID aListID,
nsIFrame* aOldFrame) override;
virtual nsContainerFrame* GetContentInsertionFrame() override;
virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
virtual nsIAtom* GetType() const override;
virtual bool IsFrameOfType(uint32_t aFlags) const override
{
// record that children that are ignorable whitespace should be excluded
// (When content was loaded via the XUL content sink, it's already
// been excluded, but we need this for when the XUL namespace is used
// in other MIME types or when the XUL CSS display types are used with
// non-XUL elements.)
// This is bogus, but it's what we've always done.
// (Given that we're replaced, we need to say we're a replaced element
// that contains a block so ReflowInput doesn't tell us to be
// NS_INTRINSICSIZE wide.)
return nsContainerFrame::IsFrameOfType(aFlags &
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock | eXULBox |
nsIFrame::eExcludesIgnorableWhitespace));
}
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override;
#endif
virtual void DidReflow(nsPresContext* aPresContext,
const ReflowInput* aReflowInput,
nsDidReflowStatus aStatus) override;
virtual bool HonorPrintBackgroundSettings() override;
virtual ~nsBoxFrame();
explicit nsBoxFrame(nsStyleContext* aContext, bool aIsRoot = false, nsBoxLayout* aLayoutManager = nullptr);
// virtual so nsStackFrame, nsButtonBoxFrame, nsSliderFrame and nsMenuFrame
// can override it
virtual void BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists);
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
#ifdef DEBUG_LAYOUT
virtual void SetDebugOnChildList(nsBoxLayoutState& aState, nsIFrame* aChild, bool aDebug);
nsresult DisplayDebugInfoFor(nsIFrame* aBox,
nsPoint& aPoint);
#endif
static nsresult LayoutChildAt(nsBoxLayoutState& aState, nsIFrame* aBox, const nsRect& aRect);
/**
* Utility method to redirect events on descendants to this frame.
* Supports 'allowevents' attribute on descendant elements to allow those
* elements and their descendants to receive events.
*/
void WrapListsInRedirector(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aIn,
const nsDisplayListSet& aOut);
/**
* This defaults to true, but some box frames (nsListBoxBodyFrame for
* example) don't support ordinals in their children.
*/
virtual bool SupportsOrdinalsInChildren();
protected:
#ifdef DEBUG_LAYOUT
virtual void GetBoxName(nsAutoString& aName) override;
void PaintXULDebugBackground(nsRenderingContext& aRenderingContext,
nsPoint aPt);
void PaintXULDebugOverlay(DrawTarget& aRenderingContext,
nsPoint aPt);
#endif
virtual bool GetInitialEqualSize(bool& aEqualSize);
virtual void GetInitialOrientation(bool& aIsHorizontal);
virtual void GetInitialDirection(bool& aIsNormal);
virtual bool GetInitialHAlignment(Halignment& aHalign);
virtual bool GetInitialVAlignment(Valignment& aValign);
virtual bool GetInitialAutoStretch(bool& aStretch);
virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
nsSize mPrefSize;
nsSize mMinSize;
nsSize mMaxSize;
nscoord mFlex;
nscoord mAscent;
nsCOMPtr<nsBoxLayout> mLayoutManager;
// Get the point associated with this event. Returns true if a single valid
// point was found. Otherwise false.
bool GetEventPoint(mozilla::WidgetGUIEvent* aEvent, nsPoint& aPoint);
// Gets the event coordinates relative to the widget offset associated with
// this frame. Return true if a single valid point was found.
bool GetEventPoint(mozilla::WidgetGUIEvent* aEvent,
mozilla::LayoutDeviceIntPoint& aPoint);
protected:
void RegUnregAccessKey(bool aDoReg);
void CheckBoxOrder();
private:
#ifdef DEBUG_LAYOUT
nsresult SetXULDebug(nsPresContext* aPresContext, bool aDebug);
bool GetInitialDebug(bool& aDebug);
void GetDebugPref();
void GetDebugBorder(nsMargin& aInset);
void GetDebugPadding(nsMargin& aInset);
void GetDebugMargin(nsMargin& aInset);
nsresult GetFrameSizeWithMargin(nsIFrame* aBox, nsSize& aSize);
void PixelMarginToTwips(nsMargin& aMarginPixels);
void GetValue(nsPresContext* aPresContext, const nsSize& a, const nsSize& b, char* value);
void GetValue(nsPresContext* aPresContext, int32_t a, int32_t b, char* value);
void DrawSpacer(nsPresContext* aPresContext, DrawTarget& aDrawTarget, bool aHorizontal, int32_t flex, nscoord x, nscoord y, nscoord size, nscoord spacerSize);
void DrawLine(DrawTarget& aDrawTarget, bool aHorizontal, nscoord x1, nscoord y1, nscoord x2, nscoord y2);
void FillRect(DrawTarget& aDrawTarget, bool aHorizontal, nscoord x, nscoord y, nscoord width, nscoord height);
#endif
virtual void UpdateMouseThrough();
void CacheAttributes();
// instance variables.
Halignment mHalign;
Valignment mValign;
#ifdef DEBUG_LAYOUT
static bool gDebug;
static nsIFrame* mDebugChild;
#endif
}; // class nsBoxFrame
#endif
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