gecko/layout/xul/grid/nsGridLayout2.cpp

267 lines
6.8 KiB
C++

/* -*- 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/. */
//
// Eric Vaughan
// Netscape Communications
//
// See documentation in associated header file
//
#include "nsGridLayout2.h"
#include "nsGridRowGroupLayout.h"
#include "nsGridRow.h"
#include "nsBox.h"
#include "nsIScrollableFrame.h"
#include "nsSprocketLayout.h"
#include "nsHTMLReflowState.h"
nsresult
NS_NewGridLayout2( nsIPresShell* aPresShell, nsBoxLayout** aNewLayout)
{
*aNewLayout = new nsGridLayout2(aPresShell);
NS_IF_ADDREF(*aNewLayout);
return NS_OK;
}
nsGridLayout2::nsGridLayout2(nsIPresShell* aPresShell):nsStackLayout()
{
}
nsGridLayout2::~nsGridLayout2()
{
}
// static
void
nsGridLayout2::AddOffset(nsBoxLayoutState& aState, nsIFrame* aChild, nsSize& aSize)
{
nsMargin offset;
GetOffset(aState, aChild, offset);
aSize.width += offset.left;
aSize.height += offset.top;
}
NS_IMETHODIMP
nsGridLayout2::Layout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
{
// XXX This should be set a better way!
mGrid.SetBox(aBox);
NS_ASSERTION(aBox->GetLayoutManager() == this, "setting incorrect box");
nsresult rv = nsStackLayout::Layout(aBox, aBoxLayoutState);
#ifdef DEBUG_grid
mGrid.PrintCellMap();
#endif
return rv;
}
void
nsGridLayout2::IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
{
nsStackLayout::IntrinsicISizesDirty(aBox, aBoxLayoutState);
// XXXldb We really don't need to do all the work that NeedsRebuild
// does; we just need to mark intrinsic widths dirty on the
// (row/column)(s/-groups).
mGrid.NeedsRebuild(aBoxLayoutState);
}
nsGrid*
nsGridLayout2::GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor)
{
// XXX This should be set a better way!
mGrid.SetBox(aBox);
NS_ASSERTION(aBox->GetLayoutManager() == this, "setting incorrect box");
return &mGrid;
}
void
nsGridLayout2::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)
{
nscoord& size = GET_WIDTH(aSize, aIsHorizontal);
if (size != NS_INTRINSICSIZE) {
if (aSize2 == NS_INTRINSICSIZE)
size = NS_INTRINSICSIZE;
else
size += aSize2;
}
}
nsSize
nsGridLayout2::GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aState)
{
nsSize minSize = nsStackLayout::GetMinSize(aBox, aState);
// if there are no <rows> tags that will sum up our columns,
// sum up our columns here.
nsSize total(0,0);
nsIFrame* rowsBox = mGrid.GetRowsBox();
nsIFrame* columnsBox = mGrid.GetColumnsBox();
if (!rowsBox || !columnsBox) {
if (!rowsBox) {
// max height is the sum of our rows
int32_t rows = mGrid.GetRowCount();
for (int32_t i=0; i < rows; i++)
{
nscoord height = mGrid.GetMinRowHeight(aState, i, true);
AddWidth(total, height, false); // AddHeight
}
}
if (!columnsBox) {
// max height is the sum of our rows
int32_t columns = mGrid.GetColumnCount();
for (int32_t i=0; i < columns; i++)
{
nscoord width = mGrid.GetMinRowHeight(aState, i, false);
AddWidth(total, width, true); // AddWidth
}
}
AddMargin(aBox, total);
AddOffset(aState, aBox, total);
AddLargestSize(minSize, total);
}
return minSize;
}
nsSize
nsGridLayout2::GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aState)
{
nsSize pref = nsStackLayout::GetPrefSize(aBox, aState);
// if there are no <rows> tags that will sum up our columns,
// sum up our columns here.
nsSize total(0,0);
nsIFrame* rowsBox = mGrid.GetRowsBox();
nsIFrame* columnsBox = mGrid.GetColumnsBox();
if (!rowsBox || !columnsBox) {
if (!rowsBox) {
// max height is the sum of our rows
int32_t rows = mGrid.GetRowCount();
for (int32_t i=0; i < rows; i++)
{
nscoord height = mGrid.GetPrefRowHeight(aState, i, true);
AddWidth(total, height, false); // AddHeight
}
}
if (!columnsBox) {
// max height is the sum of our rows
int32_t columns = mGrid.GetColumnCount();
for (int32_t i=0; i < columns; i++)
{
nscoord width = mGrid.GetPrefRowHeight(aState, i, false);
AddWidth(total, width, true); // AddWidth
}
}
AddMargin(aBox, total);
AddOffset(aState, aBox, total);
AddLargestSize(pref, total);
}
return pref;
}
nsSize
nsGridLayout2::GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aState)
{
nsSize maxSize = nsStackLayout::GetMaxSize(aBox, aState);
// if there are no <rows> tags that will sum up our columns,
// sum up our columns here.
nsSize total(NS_INTRINSICSIZE, NS_INTRINSICSIZE);
nsIFrame* rowsBox = mGrid.GetRowsBox();
nsIFrame* columnsBox = mGrid.GetColumnsBox();
if (!rowsBox || !columnsBox) {
if (!rowsBox) {
total.height = 0;
// max height is the sum of our rows
int32_t rows = mGrid.GetRowCount();
for (int32_t i=0; i < rows; i++)
{
nscoord height = mGrid.GetMaxRowHeight(aState, i, true);
AddWidth(total, height, false); // AddHeight
}
}
if (!columnsBox) {
total.width = 0;
// max height is the sum of our rows
int32_t columns = mGrid.GetColumnCount();
for (int32_t i=0; i < columns; i++)
{
nscoord width = mGrid.GetMaxRowHeight(aState, i, false);
AddWidth(total, width, true); // AddWidth
}
}
AddMargin(aBox, total);
AddOffset(aState, aBox, total);
AddSmallestSize(maxSize, total);
}
return maxSize;
}
int32_t
nsGridLayout2::BuildRows(nsIFrame* aBox, nsGridRow* aRows)
{
if (aBox) {
aRows[0].Init(aBox, true);
return 1;
}
return 0;
}
nsMargin
nsGridLayout2::GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)
{
nsMargin margin(0,0,0,0);
return margin;
}
void
nsGridLayout2::ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,
nsIFrame* aPrevBox,
const nsFrameList::Slice& aNewChildren)
{
mGrid.NeedsRebuild(aState);
}
void
nsGridLayout2::ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,
const nsFrameList::Slice& aNewChildren)
{
mGrid.NeedsRebuild(aState);
}
void
nsGridLayout2::ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,
nsIFrame* aChildList)
{
mGrid.NeedsRebuild(aState);
}
void
nsGridLayout2::ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,
nsIFrame* aChildList)
{
mGrid.NeedsRebuild(aState);
}
NS_IMPL_ADDREF_INHERITED(nsGridLayout2, nsStackLayout)
NS_IMPL_RELEASE_INHERITED(nsGridLayout2, nsStackLayout)
NS_INTERFACE_MAP_BEGIN(nsGridLayout2)
NS_INTERFACE_MAP_ENTRY(nsIGridPart)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGridPart)
NS_INTERFACE_MAP_END_INHERITING(nsStackLayout)