layout/tables/nsITableLayoutStrategy.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 // vim:cindent:ts=4:et:sw=4:
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /*
   8  * interface for the set of algorithms that determine column and table
   9  * isizes
  10  */
  11
  12 #ifndef nsITableLayoutStrategy_h_
  13 #define nsITableLayoutStrategy_h_
  14
  15 #include "nscore.h"
  16 #include "nsCoord.h"
  17
  18 class gfxContext;
  19 namespace mozilla {
  20 struct ReflowInput;
  21 }  // namespace mozilla
  22
  23 class nsITableLayoutStrategy {
  24  public:
  25   using ReflowInput = mozilla::ReflowInput;
  26
  27   virtual ~nsITableLayoutStrategy() = default;
  28
  29   /** Implement nsIFrame::GetMinISize for the table */
  30   virtual nscoord GetMinISize(gfxContext* aRenderingContext) = 0;
  31
  32   /** Implement nsIFrame::GetPrefISize for the table */
  33   virtual nscoord GetPrefISize(gfxContext* aRenderingContext,
  34                                bool aComputingSize) = 0;
  35
  36   /** Implement nsIFrame::MarkIntrinsicISizesDirty for the table */
  37   virtual void MarkIntrinsicISizesDirty() = 0;
  38
  39   /**
  40    * Compute final column isizes based on the intrinsic isize data and
  41    * the available isize.
  42    */
  43   virtual void ComputeColumnISizes(const ReflowInput& aReflowInput) = 0;
  44
  45   /**
  46    * Return the type of table layout strategy, without the cost of
  47    * a virtual function call
  48    */
  49   enum Type { Auto, Fixed };
  50   Type GetType() const { return mType; }
  51
  52  protected:
  53   explicit nsITableLayoutStrategy(Type aType) : mType(aType) {}
  54
  55  private:
  56   Type mType;
  57 };
  58
  59 #endif /* !defined(nsITableLayoutStrategy_h_) */