mirror of
https://github.com/classilla/tenfourfox.git
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266 lines
7.0 KiB
C++
266 lines
7.0 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//
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// Eric Vaughan
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// Netscape Communications
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//
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// See documentation in associated header file
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//
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/*
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* The nsGridRowGroupLayout implements the <rows> or <columns> tag in a grid.
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*/
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#include "nsGridRowGroupLayout.h"
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#include "nsCOMPtr.h"
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#include "nsIScrollableFrame.h"
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#include "nsBox.h"
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#include "nsBoxLayoutState.h"
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#include "nsGridLayout2.h"
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#include "nsGridRow.h"
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#include "nsHTMLReflowState.h"
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already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout()
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{
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RefPtr<nsBoxLayout> layout = new nsGridRowGroupLayout();
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return layout.forget();
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}
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nsGridRowGroupLayout::nsGridRowGroupLayout():nsGridRowLayout(), mRowCount(0)
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{
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}
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nsGridRowGroupLayout::~nsGridRowGroupLayout()
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{
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}
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void
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nsGridRowGroupLayout::ChildAddedOrRemoved(nsIFrame* aBox, nsBoxLayoutState& aState)
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{
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int32_t index = 0;
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nsGrid* grid = GetGrid(aBox, &index);
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bool isHorizontal = IsHorizontal(aBox);
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if (grid)
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grid->RowAddedOrRemoved(aState, index, isHorizontal);
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}
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void
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nsGridRowGroupLayout::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)
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{
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nscoord& size = GET_WIDTH(aSize, aIsHorizontal);
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if (size == NS_INTRINSICSIZE || aSize2 == NS_INTRINSICSIZE)
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size = NS_INTRINSICSIZE;
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else
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size += aSize2;
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}
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nsSize
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nsGridRowGroupLayout::GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aState)
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{
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nsSize vpref = nsGridRowLayout::GetPrefSize(aBox, aState);
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/* It is possible that we could have some extra columns. This is when less columns in XUL were
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* defined that needed. And example might be a grid with 3 defined columns but a row with 4 cells in
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* it. We would need an extra column to make the grid work. But because that extra column does not
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* have a box associated with it we must add its size in manually. Remember we could have extra rows
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* as well.
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*/
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int32_t index = 0;
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nsGrid* grid = GetGrid(aBox, &index);
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if (grid)
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{
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// make sure we add in extra columns sizes as well
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bool isHorizontal = IsHorizontal(aBox);
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int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
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int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
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for (int32_t i=0; i < extraColumns; i++)
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{
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nscoord pref =
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grid->GetPrefRowHeight(aState, i+start, !isHorizontal); // GetPrefColumnWidth
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AddWidth(vpref, pref, isHorizontal);
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}
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}
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return vpref;
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}
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nsSize
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nsGridRowGroupLayout::GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aState)
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{
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nsSize maxSize = nsGridRowLayout::GetMaxSize(aBox, aState);
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int32_t index = 0;
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nsGrid* grid = GetGrid(aBox, &index);
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if (grid)
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{
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// make sure we add in extra columns sizes as well
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bool isHorizontal = IsHorizontal(aBox);
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int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
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int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
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for (int32_t i=0; i < extraColumns; i++)
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{
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nscoord max =
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grid->GetMaxRowHeight(aState, i+start, !isHorizontal); // GetMaxColumnWidth
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AddWidth(maxSize, max, isHorizontal);
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}
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}
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return maxSize;
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}
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nsSize
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nsGridRowGroupLayout::GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aState)
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{
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nsSize minSize = nsGridRowLayout::GetMinSize(aBox, aState);
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int32_t index = 0;
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nsGrid* grid = GetGrid(aBox, &index);
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if (grid)
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{
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// make sure we add in extra columns sizes as well
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bool isHorizontal = IsHorizontal(aBox);
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int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
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int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
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for (int32_t i=0; i < extraColumns; i++)
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{
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nscoord min =
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grid->GetMinRowHeight(aState, i+start, !isHorizontal); // GetMinColumnWidth
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AddWidth(minSize, min, isHorizontal);
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}
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}
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return minSize;
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}
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/*
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* Run down through our children dirtying them recursively.
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*/
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void
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nsGridRowGroupLayout::DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState)
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{
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if (aBox) {
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// mark us dirty
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// XXXldb We probably don't want to walk up the ancestor chain
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// calling MarkIntrinsicISizesDirty for every row group.
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aState.PresShell()->FrameNeedsReflow(aBox, nsIPresShell::eTreeChange,
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NS_FRAME_IS_DIRTY);
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nsIFrame* child = nsBox::GetChildBox(aBox);
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while(child) {
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// walk into scrollframes
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nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
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// walk into other monuments
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nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
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if (monument)
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monument->DirtyRows(deepChild, aState);
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child = nsBox::GetNextBox(child);
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}
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}
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}
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void
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nsGridRowGroupLayout::CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount)
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{
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if (aBox) {
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int32_t startCount = aRowCount;
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nsIFrame* child = nsBox::GetChildBox(aBox);
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while(child) {
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// first see if it is a scrollframe. If so walk down into it and get the scrolled child
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nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
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nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
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if (monument) {
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monument->CountRowsColumns(deepChild, aRowCount, aComputedColumnCount);
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child = nsBox::GetNextBox(child);
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deepChild = child;
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continue;
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}
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child = nsBox::GetNextBox(child);
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// if not a monument. Then count it. It will be a bogus row
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aRowCount++;
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}
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mRowCount = aRowCount - startCount;
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}
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}
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/**
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* Fill out the given row structure recursively
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*/
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int32_t
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nsGridRowGroupLayout::BuildRows(nsIFrame* aBox, nsGridRow* aRows)
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{
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int32_t rowCount = 0;
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if (aBox) {
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nsIFrame* child = nsBox::GetChildBox(aBox);
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while(child) {
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// first see if it is a scrollframe. If so walk down into it and get the scrolled child
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nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
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nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
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if (monument) {
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rowCount += monument->BuildRows(deepChild, &aRows[rowCount]);
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child = nsBox::GetNextBox(child);
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deepChild = child;
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continue;
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}
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aRows[rowCount].Init(child, true);
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child = nsBox::GetNextBox(child);
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// if not a monument. Then count it. It will be a bogus row
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rowCount++;
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}
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}
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return rowCount;
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}
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nsMargin
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nsGridRowGroupLayout::GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)
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{
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// group have border and padding added to the total margin
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nsMargin margin = nsGridRowLayout::GetTotalMargin(aBox, aIsHorizontal);
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// make sure we have the scrollframe on the outside if it has one.
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// that's where the border is.
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aBox = nsGrid::GetScrollBox(aBox);
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// add our border/padding to it
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nsMargin borderPadding(0,0,0,0);
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aBox->GetBorderAndPadding(borderPadding);
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margin += borderPadding;
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return margin;
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}
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