зеркало из https://github.com/mozilla/gecko-dev.git
247 строки
9.6 KiB
C++
247 строки
9.6 KiB
C++
/* -*- 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;
|
|
|
|
nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
|
|
nsStyleContext* aContext,
|
|
bool aIsRoot,
|
|
nsBoxLayout* aLayoutManager);
|
|
nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
|
|
nsStyleContext* aContext);
|
|
|
|
class nsBoxFrame : public nsContainerFrame
|
|
{
|
|
public:
|
|
NS_DECL_FRAMEARENA_HELPERS
|
|
|
|
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 SetLayoutManager(nsBoxLayout* aLayout) MOZ_OVERRIDE { mLayoutManager = aLayout; }
|
|
virtual nsBoxLayout* GetLayoutManager() MOZ_OVERRIDE { return mLayoutManager; }
|
|
|
|
NS_IMETHOD RelayoutChildAtOrdinal(nsBoxLayoutState& aState, nsIFrame* aChild) MOZ_OVERRIDE;
|
|
|
|
virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
|
|
virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
|
|
virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
|
|
virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
|
|
virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
|
|
#ifdef DEBUG_LAYOUT
|
|
NS_IMETHOD SetDebug(nsBoxLayoutState& aBoxLayoutState, bool aDebug) MOZ_OVERRIDE;
|
|
NS_IMETHOD GetDebug(bool& aDebug) MOZ_OVERRIDE;
|
|
#endif
|
|
virtual Valignment GetVAlign() const MOZ_OVERRIDE { return mValign; }
|
|
virtual Halignment GetHAlign() const MOZ_OVERRIDE { return mHalign; }
|
|
NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
|
|
|
|
virtual bool ComputesOwnOverflowArea() MOZ_OVERRIDE { return false; }
|
|
|
|
// ----- child and sibling operations ---
|
|
|
|
// ----- public methods -------
|
|
|
|
virtual void Init(nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIFrame* asPrevInFlow) MOZ_OVERRIDE;
|
|
|
|
|
|
NS_IMETHOD AttributeChanged(int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType) MOZ_OVERRIDE;
|
|
|
|
virtual void MarkIntrinsicWidthsDirty() MOZ_OVERRIDE;
|
|
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
|
|
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus) MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD AppendFrames(ChildListID aListID,
|
|
nsFrameList& aFrameList) MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD InsertFrames(ChildListID aListID,
|
|
nsIFrame* aPrevFrame,
|
|
nsFrameList& aFrameList) MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD RemoveFrame(ChildListID aListID,
|
|
nsIFrame* aOldFrame) MOZ_OVERRIDE;
|
|
|
|
virtual nsIFrame* GetContentInsertionFrame() MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList) MOZ_OVERRIDE;
|
|
|
|
virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE;
|
|
|
|
virtual nsIAtom* GetType() const MOZ_OVERRIDE;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_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 nsHTMLReflowState doesn't tell us to be
|
|
// NS_INTRINSICSIZE wide.)
|
|
return nsContainerFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock | eXULBox |
|
|
nsIFrame::eExcludesIgnorableWhitespace));
|
|
}
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
NS_IMETHOD GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
|
|
#endif
|
|
|
|
NS_IMETHOD DidReflow(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState* aReflowState,
|
|
nsDidReflowStatus aStatus) MOZ_OVERRIDE;
|
|
|
|
virtual bool HonorPrintBackgroundSettings() MOZ_OVERRIDE;
|
|
|
|
virtual ~nsBoxFrame();
|
|
|
|
nsBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, bool aIsRoot = false, nsBoxLayout* aLayoutManager = nullptr);
|
|
|
|
// virtual so nsStackFrame, nsButtonBoxFrame, nsSliderFrame and nsMenuFrame
|
|
// can override it
|
|
virtual void BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists);
|
|
|
|
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists) MOZ_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) MOZ_OVERRIDE;
|
|
void PaintXULDebugBackground(nsRenderingContext& aRenderingContext,
|
|
nsPoint aPt);
|
|
void PaintXULDebugOverlay(nsRenderingContext& 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) MOZ_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, nsIntPoint& aPoint);
|
|
|
|
protected:
|
|
void RegUnregAccessKey(bool aDoReg);
|
|
|
|
NS_HIDDEN_(void) CheckBoxOrder();
|
|
|
|
private:
|
|
|
|
#ifdef DEBUG_LAYOUT
|
|
nsresult SetDebug(nsPresContext* aPresContext, bool aDebug);
|
|
bool GetInitialDebug(bool& aDebug);
|
|
void GetDebugPref(nsPresContext* aPresContext);
|
|
|
|
void GetDebugBorder(nsMargin& aInset);
|
|
void GetDebugPadding(nsMargin& aInset);
|
|
void GetDebugMargin(nsMargin& aInset);
|
|
|
|
nsresult GetFrameSizeWithMargin(nsIFrame* aBox, nsSize& aSize);
|
|
|
|
void PixelMarginToTwips(nsPresContext* aPresContext, 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, nsRenderingContext& aRenderingContext, bool aHorizontal, int32_t flex, nscoord x, nscoord y, nscoord size, nscoord spacerSize);
|
|
void DrawLine(nsRenderingContext& aRenderingContext, bool aHorizontal, nscoord x1, nscoord y1, nscoord x2, nscoord y2);
|
|
void FillRect(nsRenderingContext& aRenderingContext, 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
|
|
|