layout/tables/nsITableLayoutStrategy.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   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  * widths
  10  */
  11
  12 #ifndef nsITableLayoutStrategy_h_
  13 #define nsITableLayoutStrategy_h_
  14
  15 #include "nscore.h"
  16 #include "nsCoord.h"
  17
  18 class nsRenderingContext;
  19 struct nsHTMLReflowState;
  20
  21 class nsITableLayoutStrategy
  22 {
  23 public:
  24     virtual ~nsITableLayoutStrategy() {}
  25
  26     /** Implement nsIFrame::GetMinISize for the table */
  27     virtual nscoord GetMinISize(nsRenderingContext* aRenderingContext) = 0;
  28
  29     /** Implement nsIFrame::GetPrefISize for the table */
  30     virtual nscoord GetPrefISize(nsRenderingContext* aRenderingContext,
  31                                  bool aComputingSize) = 0;
  32
  33     /** Implement nsIFrame::MarkIntrinsicISizesDirty for the table */
  34     virtual void MarkIntrinsicISizesDirty() = 0;
  35
  36     /**
  37      * Compute final column widths based on the intrinsic width data and
  38      * the available width.
  39      */
  40     virtual void ComputeColumnWidths(const nsHTMLReflowState& aReflowState) = 0;
  41
  42     /**
  43      * Return the type of table layout strategy, without the cost of
  44      * a virtual function call
  45      */
  46     enum Type { Auto, Fixed };
  47     Type GetType() const { return mType; }
  48
  49 protected:
  50     explicit nsITableLayoutStrategy(Type aType) : mType(aType) {}
  51 private:
  52     Type mType;
  53 };
  54
  55 #endif /* !defined(nsITableLayoutStrategy_h_) */