gecko-dev/layout/xul/grid/nsGridCell.cpp

129 строки
2.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 Vaughan
// Netscape Communications
//
// See documentation in associated header file
//
#include "nsGridCell.h"
#include "nsFrame.h"
#include "nsBox.h"
#include "nsGridLayout2.h"
nsGridCell::nsGridCell():mBoxInColumn(nullptr),mBoxInRow(nullptr)
{
MOZ_COUNT_CTOR(nsGridCell);
}
nsGridCell::~nsGridCell()
{
MOZ_COUNT_DTOR(nsGridCell);
}
nsSize
nsGridCell::GetXULPrefSize(nsBoxLayoutState& aState)
{
nsSize sum(0,0);
// take our 2 children and add them up.
// we are as wide as the widest child plus its left offset
// we are tall as the tallest child plus its top offset
if (mBoxInColumn) {
nsSize pref = mBoxInColumn->GetXULPrefSize(aState);
nsBox::AddMargin(mBoxInColumn, pref);
nsGridLayout2::AddOffset(mBoxInColumn, pref);
nsBoxLayout::AddLargestSize(sum, pref);
}
if (mBoxInRow) {
nsSize pref = mBoxInRow->GetXULPrefSize(aState);
nsBox::AddMargin(mBoxInRow, pref);
nsGridLayout2::AddOffset(mBoxInRow, pref);
nsBoxLayout::AddLargestSize(sum, pref);
}
return sum;
}
nsSize
nsGridCell::GetXULMinSize(nsBoxLayoutState& aState)
{
nsSize sum(0, 0);
// take our 2 children and add them up.
// we are as wide as the widest child plus its left offset
// we are tall as the tallest child plus its top offset
if (mBoxInColumn) {
nsSize min = mBoxInColumn->GetXULMinSize(aState);
nsBox::AddMargin(mBoxInColumn, min);
nsGridLayout2::AddOffset(mBoxInColumn, min);
nsBoxLayout::AddLargestSize(sum, min);
}
if (mBoxInRow) {
nsSize min = mBoxInRow->GetXULMinSize(aState);
nsBox::AddMargin(mBoxInRow, min);
nsGridLayout2::AddOffset(mBoxInRow, min);
nsBoxLayout::AddLargestSize(sum, min);
}
return sum;
}
nsSize
nsGridCell::GetXULMaxSize(nsBoxLayoutState& aState)
{
nsSize sum(NS_INTRINSICSIZE, NS_INTRINSICSIZE);
// take our 2 children and add them up.
// we are as wide as the smallest child plus its left offset
// we are tall as the shortest child plus its top offset
if (mBoxInColumn) {
nsSize max = mBoxInColumn->GetXULMaxSize(aState);
nsBox::AddMargin(mBoxInColumn, max);
nsGridLayout2::AddOffset(mBoxInColumn, max);
nsBoxLayout::AddSmallestSize(sum, max);
}
if (mBoxInRow) {
nsSize max = mBoxInRow->GetXULMaxSize(aState);
nsBox::AddMargin(mBoxInRow, max);
nsGridLayout2::AddOffset(mBoxInRow, max);
nsBoxLayout::AddSmallestSize(sum, max);
}
return sum;
}
bool
nsGridCell::IsXULCollapsed()
{
return ((mBoxInColumn && mBoxInColumn->IsXULCollapsed()) ||
(mBoxInRow && mBoxInRow->IsXULCollapsed()));
}