layout/xul/nsBoxLayout.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 //
   7 // Eric Vaughan
   8 // Netscape Communications
   9 //
  10 // See documentation in associated header file
  11 //
  12
  13 #include "nsBox.h"
  14 #include "nsCOMPtr.h"
  15 #include "nsContainerFrame.h"
  16 #include "nsBoxLayout.h"
  17
  18 void
  19 nsBoxLayout::AddBorderAndPadding(nsIFrame* aBox, nsSize& aSize)
  20 {
  21   nsBox::AddBorderAndPadding(aBox, aSize);
  22 }
  23
  24 void
  25 nsBoxLayout::AddMargin(nsIFrame* aBox, nsSize& aSize)
  26 {
  27   nsBox::AddMargin(aBox, aSize);
  28 }
  29
  30 void
  31 nsBoxLayout::AddMargin(nsSize& aSize, const nsMargin& aMargin)
  32 {
  33   nsBox::AddMargin(aSize, aMargin);
  34 }
  35
  36 nsSize
  37 nsBoxLayout::GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
  38 {
  39   nsSize pref (0, 0);
  40   AddBorderAndPadding(aBox, pref);
  41
  42   return pref;
  43 }
  44
  45 nsSize
  46 nsBoxLayout::GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
  47 {
  48   nsSize minSize (0,0);
  49   AddBorderAndPadding(aBox, minSize);
  50   return minSize;
  51 }
  52
  53 nsSize
  54 nsBoxLayout::GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
  55 {
  56   //AddBorderAndPadding () never changes maxSize (NS_INTRINSICSIZE)
  57   //AddBorderAndPadding(aBox, maxSize);
  58   return nsSize (NS_INTRINSICSIZE,NS_INTRINSICSIZE);
  59 }
  60
  61
  62 nscoord
  63 nsBoxLayout::GetAscent(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
  64 {
  65   return 0;
  66 }
  67
  68 NS_IMETHODIMP
  69 nsBoxLayout::Layout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
  70 {
  71   return NS_OK;
  72 }
  73
  74 void
  75 nsBoxLayout::AddLargestSize(nsSize& aSize, const nsSize& aSize2)
  76 {
  77   if (aSize2.width > aSize.width)
  78      aSize.width = aSize2.width;
  79
  80   if (aSize2.height > aSize.height)
  81      aSize.height = aSize2.height;
  82 }
  83
  84 void
  85 nsBoxLayout::AddSmallestSize(nsSize& aSize, const nsSize& aSize2)
  86 {
  87   if (aSize2.width < aSize.width)
  88      aSize.width = aSize2.width;
  89
  90   if (aSize2.height < aSize.height)
  91      aSize.height = aSize2.height;
  92 }
  93
  94 NS_IMPL_ISUPPORTS(nsBoxLayout, nsBoxLayout)