1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/grid/nsGridRowGroupLayout.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,264 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +//
1.10 +// Eric Vaughan
1.11 +// Netscape Communications
1.12 +//
1.13 +// See documentation in associated header file
1.14 +//
1.15 +
1.16 +
1.17 +/*
1.18 + * The nsGridRowGroupLayout implements the <rows> or <columns> tag in a grid.
1.19 + */
1.20 +
1.21 +#include "nsGridRowGroupLayout.h"
1.22 +#include "nsCOMPtr.h"
1.23 +#include "nsIScrollableFrame.h"
1.24 +#include "nsBoxLayoutState.h"
1.25 +#include "nsGridLayout2.h"
1.26 +#include "nsGridRow.h"
1.27 +#include "nsHTMLReflowState.h"
1.28 +
1.29 +already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout()
1.30 +{
1.31 + nsRefPtr<nsBoxLayout> layout = new nsGridRowGroupLayout();
1.32 + return layout.forget();
1.33 +}
1.34 +
1.35 +nsGridRowGroupLayout::nsGridRowGroupLayout():nsGridRowLayout(), mRowCount(0)
1.36 +{
1.37 +}
1.38 +
1.39 +nsGridRowGroupLayout::~nsGridRowGroupLayout()
1.40 +{
1.41 +}
1.42 +
1.43 +void
1.44 +nsGridRowGroupLayout::ChildAddedOrRemoved(nsIFrame* aBox, nsBoxLayoutState& aState)
1.45 +{
1.46 + int32_t index = 0;
1.47 + nsGrid* grid = GetGrid(aBox, &index);
1.48 + bool isHorizontal = IsHorizontal(aBox);
1.49 +
1.50 + if (grid)
1.51 + grid->RowAddedOrRemoved(aState, index, isHorizontal);
1.52 +}
1.53 +
1.54 +void
1.55 +nsGridRowGroupLayout::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)
1.56 +{
1.57 + nscoord& size = GET_WIDTH(aSize, aIsHorizontal);
1.58 +
1.59 + if (size == NS_INTRINSICSIZE || aSize2 == NS_INTRINSICSIZE)
1.60 + size = NS_INTRINSICSIZE;
1.61 + else
1.62 + size += aSize2;
1.63 +}
1.64 +
1.65 +nsSize
1.66 +nsGridRowGroupLayout::GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aState)
1.67 +{
1.68 + nsSize vpref = nsGridRowLayout::GetPrefSize(aBox, aState);
1.69 +
1.70 +
1.71 + /* It is possible that we could have some extra columns. This is when less columns in XUL were
1.72 + * defined that needed. And example might be a grid with 3 defined columns but a row with 4 cells in
1.73 + * it. We would need an extra column to make the grid work. But because that extra column does not
1.74 + * have a box associated with it we must add its size in manually. Remember we could have extra rows
1.75 + * as well.
1.76 + */
1.77 +
1.78 + int32_t index = 0;
1.79 + nsGrid* grid = GetGrid(aBox, &index);
1.80 +
1.81 + if (grid)
1.82 + {
1.83 + // make sure we add in extra columns sizes as well
1.84 + bool isHorizontal = IsHorizontal(aBox);
1.85 + int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
1.86 + int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
1.87 + for (int32_t i=0; i < extraColumns; i++)
1.88 + {
1.89 + nscoord pref =
1.90 + grid->GetPrefRowHeight(aState, i+start, !isHorizontal); // GetPrefColumnWidth
1.91 +
1.92 + AddWidth(vpref, pref, isHorizontal);
1.93 + }
1.94 + }
1.95 +
1.96 + return vpref;
1.97 +}
1.98 +
1.99 +nsSize
1.100 +nsGridRowGroupLayout::GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aState)
1.101 +{
1.102 + nsSize maxSize = nsGridRowLayout::GetMaxSize(aBox, aState);
1.103 +
1.104 + int32_t index = 0;
1.105 + nsGrid* grid = GetGrid(aBox, &index);
1.106 +
1.107 + if (grid)
1.108 + {
1.109 + // make sure we add in extra columns sizes as well
1.110 + bool isHorizontal = IsHorizontal(aBox);
1.111 + int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
1.112 + int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
1.113 + for (int32_t i=0; i < extraColumns; i++)
1.114 + {
1.115 + nscoord max =
1.116 + grid->GetMaxRowHeight(aState, i+start, !isHorizontal); // GetMaxColumnWidth
1.117 +
1.118 + AddWidth(maxSize, max, isHorizontal);
1.119 + }
1.120 + }
1.121 +
1.122 + return maxSize;
1.123 +}
1.124 +
1.125 +nsSize
1.126 +nsGridRowGroupLayout::GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aState)
1.127 +{
1.128 + nsSize minSize = nsGridRowLayout::GetMinSize(aBox, aState);
1.129 +
1.130 + int32_t index = 0;
1.131 + nsGrid* grid = GetGrid(aBox, &index);
1.132 +
1.133 + if (grid)
1.134 + {
1.135 + // make sure we add in extra columns sizes as well
1.136 + bool isHorizontal = IsHorizontal(aBox);
1.137 + int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
1.138 + int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
1.139 + for (int32_t i=0; i < extraColumns; i++)
1.140 + {
1.141 + nscoord min =
1.142 + grid->GetMinRowHeight(aState, i+start, !isHorizontal); // GetMinColumnWidth
1.143 + AddWidth(minSize, min, isHorizontal);
1.144 + }
1.145 + }
1.146 +
1.147 + return minSize;
1.148 +}
1.149 +
1.150 +/*
1.151 + * Run down through our children dirtying them recursively.
1.152 + */
1.153 +void
1.154 +nsGridRowGroupLayout::DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState)
1.155 +{
1.156 + if (aBox) {
1.157 + // mark us dirty
1.158 + // XXXldb We probably don't want to walk up the ancestor chain
1.159 + // calling MarkIntrinsicWidthsDirty for every row group.
1.160 + aState.PresShell()->FrameNeedsReflow(aBox, nsIPresShell::eTreeChange,
1.161 + NS_FRAME_IS_DIRTY);
1.162 + nsIFrame* child = aBox->GetChildBox();
1.163 +
1.164 + while(child) {
1.165 +
1.166 + // walk into scrollframes
1.167 + nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
1.168 +
1.169 + // walk into other monuments
1.170 + nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
1.171 + if (monument)
1.172 + monument->DirtyRows(deepChild, aState);
1.173 +
1.174 + child = child->GetNextBox();
1.175 + }
1.176 + }
1.177 +}
1.178 +
1.179 +
1.180 +void
1.181 +nsGridRowGroupLayout::CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount)
1.182 +{
1.183 + if (aBox) {
1.184 + int32_t startCount = aRowCount;
1.185 +
1.186 + nsIFrame* child = aBox->GetChildBox();
1.187 +
1.188 + while(child) {
1.189 +
1.190 + // first see if it is a scrollframe. If so walk down into it and get the scrolled child
1.191 + nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
1.192 +
1.193 + nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
1.194 + if (monument) {
1.195 + monument->CountRowsColumns(deepChild, aRowCount, aComputedColumnCount);
1.196 + child = child->GetNextBox();
1.197 + deepChild = child;
1.198 + continue;
1.199 + }
1.200 +
1.201 + child = child->GetNextBox();
1.202 +
1.203 + // if not a monument. Then count it. It will be a bogus row
1.204 + aRowCount++;
1.205 + }
1.206 +
1.207 + mRowCount = aRowCount - startCount;
1.208 + }
1.209 +}
1.210 +
1.211 +
1.212 +/**
1.213 + * Fill out the given row structure recursively
1.214 + */
1.215 +int32_t
1.216 +nsGridRowGroupLayout::BuildRows(nsIFrame* aBox, nsGridRow* aRows)
1.217 +{
1.218 + int32_t rowCount = 0;
1.219 +
1.220 + if (aBox) {
1.221 + nsIFrame* child = aBox->GetChildBox();
1.222 +
1.223 + while(child) {
1.224 +
1.225 + // first see if it is a scrollframe. If so walk down into it and get the scrolled child
1.226 + nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
1.227 +
1.228 + nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
1.229 + if (monument) {
1.230 + rowCount += monument->BuildRows(deepChild, &aRows[rowCount]);
1.231 + child = child->GetNextBox();
1.232 + deepChild = child;
1.233 + continue;
1.234 + }
1.235 +
1.236 + aRows[rowCount].Init(child, true);
1.237 +
1.238 + child = child->GetNextBox();
1.239 +
1.240 + // if not a monument. Then count it. It will be a bogus row
1.241 + rowCount++;
1.242 + }
1.243 + }
1.244 +
1.245 + return rowCount;
1.246 +}
1.247 +
1.248 +nsMargin
1.249 +nsGridRowGroupLayout::GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)
1.250 +{
1.251 + // group have border and padding added to the total margin
1.252 +
1.253 + nsMargin margin = nsGridRowLayout::GetTotalMargin(aBox, aIsHorizontal);
1.254 +
1.255 + // make sure we have the scrollframe on the outside if it has one.
1.256 + // that's where the border is.
1.257 + aBox = nsGrid::GetScrollBox(aBox);
1.258 +
1.259 + // add our border/padding to it
1.260 + nsMargin borderPadding(0,0,0,0);
1.261 + aBox->GetBorderAndPadding(borderPadding);
1.262 + margin += borderPadding;
1.263 +
1.264 + return margin;
1.265 +}
1.266 +
1.267 +
