1 files changed, 142 insertions, 0 deletions
diff --git a/layout/xul/nsSprocketLayout.h b/layout/xul/nsSprocketLayout.h
new file mode 100644
index 000000000..0f15dce44
--- /dev/null
+++ b/layout/xul/nsSprocketLayout.h
@@ -0,0 +1,142 @@
+/* -*- 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/. */
+
+#ifndef nsSprocketLayout_h___
+#define nsSprocketLayout_h___
+
+#include "mozilla/Attributes.h"
+#include "nsBoxLayout.h"
+#include "nsCOMPtr.h"
+#include "nsIFrame.h"
+
+class nsBoxSize
+{
+public:
+
+  nsBoxSize();
+
+  nscoord pref;
+  nscoord min;
+  nscoord max;
+  nscoord flex;
+  nscoord left;
+  nscoord right;
+  bool    collapsed;
+  bool    bogus;
+
+  nsBoxSize* next;
+
+  void* operator new(size_t sz, nsBoxLayoutState& aState) CPP_THROW_NEW;
+  void operator delete(void* aPtr, size_t sz);
+};
+
+class nsComputedBoxSize
+{
+public:
+  nsComputedBoxSize();
+
+  nscoord size;
+  bool    valid;
+  bool    resized;
+  nsComputedBoxSize* next;
+
+  void* operator new(size_t sz, nsBoxLayoutState& aState) CPP_THROW_NEW;
+  void operator delete(void* aPtr, size_t sz);
+};
+
+#define GET_WIDTH(size, isHorizontal) (isHorizontal ? size.width : size.height)
+#define GET_HEIGHT(size, isHorizontal) (isHorizontal ? size.height : size.width)
+#define GET_X(size, isHorizontal) (isHorizontal ? size.x : size.y)
+#define GET_Y(size, isHorizontal) (isHorizontal ? size.y : size.x)
+#define GET_COORD(aX, aY, isHorizontal) (isHorizontal ? aX : aY)
+
+#define SET_WIDTH(size, coord, isHorizontal)  if (isHorizontal) { (size).width  = (coord); } else { (size).height = (coord); }
+#define SET_HEIGHT(size, coord, isHorizontal) if (isHorizontal) { (size).height = (coord); } else { (size).width  = (coord); }
+#define SET_X(size, coord, isHorizontal) if (isHorizontal) { (size).x = (coord); } else { (size).y  = (coord); }
+#define SET_Y(size, coord, isHorizontal) if (isHorizontal) { (size).y = (coord); } else { (size).x  = (coord); }
+
+#define SET_COORD(aX, aY, coord, isHorizontal) if (isHorizontal) { aX = (coord); } else { aY  = (coord); }
+
+nsresult NS_NewSprocketLayout(nsCOMPtr<nsBoxLayout>& aNewLayout);
+
+class nsSprocketLayout : public nsBoxLayout {
+
+public:
+
+  friend nsresult NS_NewSprocketLayout(nsCOMPtr<nsBoxLayout>& aNewLayout);
+  static void Shutdown();
+
+  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;
+
+  nsSprocketLayout();
+
+  static bool IsXULHorizontal(nsIFrame* aBox);
+
+  static void SetLargestSize(nsSize& aSize1, const nsSize& aSize2, bool aIsHorizontal);
+  static void SetSmallestSize(nsSize& aSize1, const nsSize& aSize2, bool aIsHorizontal);
+
+  static void AddLargestSize(nsSize& aSize, const nsSize& aSizeToAdd, bool aIsHorizontal);
+  static void AddSmallestSize(nsSize& aSize, const nsSize& aSizeToAdd, bool aIsHorizontal);
+  static void AddCoord(nscoord& aCoord, nscoord aCoordToAdd);
+
+protected:
+
+
+  void ComputeChildsNextPosition(nsIFrame* aBox,
+                                 const nscoord& aCurX, 
+                                 const nscoord& aCurY, 
+                                 nscoord& aNextX, 
+                                 nscoord& aNextY, 
+                                 const nsRect& aChildSize);
+
+  void ChildResized(nsIFrame* aBox,
+                    nsBoxLayoutState& aState, 
+                    nsIFrame* aChild,
+                    nsBoxSize* aChildBoxSize, 
+                    nsComputedBoxSize* aChildComputedBoxSize, 
+                    nsBoxSize* aBoxSizes, 
+                    nsComputedBoxSize* aComputedBoxSizes, 
+                    const nsRect& aChildLayoutRect, 
+                    nsRect& aChildActualRect, 
+                    nsRect& aContainingRect, 
+                    int32_t aFlexes, 
+                    bool& aFinished);
+
+  void AlignChildren(nsIFrame* aBox,
+                     nsBoxLayoutState& aState);
+
+  virtual void ComputeChildSizes(nsIFrame* aBox, 
+                         nsBoxLayoutState& aState, 
+                         nscoord& aGivenSize, 
+                         nsBoxSize* aBoxSizes, 
+                         nsComputedBoxSize*& aComputedBoxSizes);
+
+
+  virtual void PopulateBoxSizes(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState,
+                                nsBoxSize*& aBoxSizes, nscoord& aMinSize,
+                                nscoord& aMaxSize, int32_t& aFlexes);
+
+  virtual void InvalidateComputedSizes(nsComputedBoxSize* aComputedBoxSizes);
+
+  virtual bool GetDefaultFlex(int32_t& aFlex);
+
+  virtual void GetFrameState(nsIFrame* aBox, nsFrameState& aState);
+
+private:
+
+
+  // because the sprocket layout manager has no instance variables. We 
+  // can make a static one and reuse it everywhere.
+  static nsBoxLayout* gInstance;
+
+};
+
+#endif
+