/* -*- 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 #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 SetLayoutManager(nsBoxLayout* aLayout) MOZ_OVERRIDE { mLayoutManager = aLayout; } virtual nsBoxLayout* GetLayoutManager() MOZ_OVERRIDE { return mLayoutManager; } virtual nsresult 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 virtual nsresult SetDebug(nsBoxLayoutState& aBoxLayoutState, bool aDebug) MOZ_OVERRIDE; virtual nsresult 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; virtual nsresult 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; virtual nsresult Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) MOZ_OVERRIDE; virtual nsresult AppendFrames(ChildListID aListID, nsFrameList& aFrameList) MOZ_OVERRIDE; virtual nsresult InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame, nsFrameList& aFrameList) MOZ_OVERRIDE; virtual nsresult RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) MOZ_OVERRIDE; virtual nsIFrame* GetContentInsertionFrame() MOZ_OVERRIDE; virtual nsresult 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 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE; #endif virtual nsresult 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 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