The Tor Browser: layout/xul/grid/nsGridRowGroupLayout.cpp@deefc01c0e14 (annotated)

layout/xul/grid/nsGridRowGroupLayout.cpp@deefc01c0e14 (annotated)

layout/xul/grid/nsGridRowGroupLayout.cpp

Thu, 15 Jan 2015 21:03:48 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 21:03:48 +0100
branch: TOR_BUG_9701
changeset 11: deefc01c0e14
permissions: -rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

 /* -*- 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
 //
 /*
  * The nsGridRowGroupLayout implements the <rows> or <columns> tag in a grid.
  */
 #include "nsGridRowGroupLayout.h"
 #include "nsCOMPtr.h"
 #include "nsIScrollableFrame.h"
 #include "nsBoxLayoutState.h"
 #include "nsGridLayout2.h"
 #include "nsGridRow.h"
 #include "nsHTMLReflowState.h"
 already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout()
 {
   nsRefPtr<nsBoxLayout> layout = new nsGridRowGroupLayout();
   return layout.forget();
 }
 nsGridRowGroupLayout::nsGridRowGroupLayout():nsGridRowLayout(), mRowCount(0)
 {
 }
 nsGridRowGroupLayout::~nsGridRowGroupLayout()
 {
 }
 void
 nsGridRowGroupLayout::ChildAddedOrRemoved(nsIFrame* aBox, nsBoxLayoutState& aState)
 {
   int32_t index = 0;
   nsGrid* grid = GetGrid(aBox, &index);
   bool isHorizontal = IsHorizontal(aBox);
   if (grid)
     grid->RowAddedOrRemoved(aState, index, isHorizontal);
 }
 void
 nsGridRowGroupLayout::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)
 {
   nscoord& size = GET_WIDTH(aSize, aIsHorizontal);
   if (size == NS_INTRINSICSIZE || aSize2 == NS_INTRINSICSIZE)
     size = NS_INTRINSICSIZE;
   else
     size += aSize2;
 }
 nsSize
 nsGridRowGroupLayout::GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aState)
 {
   nsSize vpref = nsGridRowLayout::GetPrefSize(aBox, aState);
  /* It is possible that we could have some extra columns. This is when less columns in XUL were
   * defined that needed. And example might be a grid with 3 defined columns but a row with 4 cells in
   * it. We would need an extra column to make the grid work. But because that extra column does not
   * have a box associated with it we must add its size in manually. Remember we could have extra rows
   * as well.
   */
   int32_t index = 0;
   nsGrid* grid = GetGrid(aBox, &index);
   if (grid)
   {
     // make sure we add in extra columns sizes as well
     bool isHorizontal = IsHorizontal(aBox);
     int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
     int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
     for (int32_t i=0; i < extraColumns; i++)
     {
       nscoord pref =
         grid->GetPrefRowHeight(aState, i+start, !isHorizontal); // GetPrefColumnWidth
       AddWidth(vpref, pref, isHorizontal);
     }
   }
   return vpref;
 }
 nsSize
 nsGridRowGroupLayout::GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aState)
 {
  nsSize maxSize = nsGridRowLayout::GetMaxSize(aBox, aState);
   int32_t index = 0;
   nsGrid* grid = GetGrid(aBox, &index);
   if (grid)
   {
     // make sure we add in extra columns sizes as well
     bool isHorizontal = IsHorizontal(aBox);
     int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
     int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
     for (int32_t i=0; i < extraColumns; i++)
     {
       nscoord max =
         grid->GetMaxRowHeight(aState, i+start, !isHorizontal); // GetMaxColumnWidth
       AddWidth(maxSize, max, isHorizontal);
     }
   }
   return maxSize;
 }
 nsSize
 nsGridRowGroupLayout::GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aState)
 {
   nsSize minSize = nsGridRowLayout::GetMinSize(aBox, aState);
   int32_t index = 0;
   nsGrid* grid = GetGrid(aBox, &index);
   if (grid)
   {
     // make sure we add in extra columns sizes as well
     bool isHorizontal = IsHorizontal(aBox);
     int32_t extraColumns = grid->GetExtraColumnCount(isHorizontal);
     int32_t start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
     for (int32_t i=0; i < extraColumns; i++)
     {
       nscoord min =
         grid->GetMinRowHeight(aState, i+start, !isHorizontal); // GetMinColumnWidth
       AddWidth(minSize, min, isHorizontal);
     }
   }
   return minSize;
 }
 /*
  * Run down through our children dirtying them recursively.
  */
 void
 nsGridRowGroupLayout::DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState)
 {
   if (aBox) {
     // mark us dirty
     // XXXldb We probably don't want to walk up the ancestor chain
     // calling MarkIntrinsicWidthsDirty for every row group.
     aState.PresShell()->FrameNeedsReflow(aBox, nsIPresShell::eTreeChange,
                                          NS_FRAME_IS_DIRTY);
     nsIFrame* child = aBox->GetChildBox();
     while(child) {
       // walk into scrollframes
       nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
       // walk into other monuments
       nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
       if (monument)
         monument->DirtyRows(deepChild, aState);
       child = child->GetNextBox();
     }
   }
 }
 void
 nsGridRowGroupLayout::CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount)
 {
   if (aBox) {
     int32_t startCount = aRowCount;
     nsIFrame* child = aBox->GetChildBox();
     while(child) {
       // first see if it is a scrollframe. If so walk down into it and get the scrolled child
       nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
       nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
       if (monument) {
         monument->CountRowsColumns(deepChild, aRowCount, aComputedColumnCount);
         child = child->GetNextBox();
         deepChild = child;
         continue;
       }
       child = child->GetNextBox();
       // if not a monument. Then count it. It will be a bogus row
       aRowCount++;
     }
     mRowCount = aRowCount - startCount;
   }
 }
 /**
  * Fill out the given row structure recursively
  */
 int32_t
 nsGridRowGroupLayout::BuildRows(nsIFrame* aBox, nsGridRow* aRows)
 {
   int32_t rowCount = 0;
   if (aBox) {
     nsIFrame* child = aBox->GetChildBox();
     while(child) {
       // first see if it is a scrollframe. If so walk down into it and get the scrolled child
       nsIFrame* deepChild = nsGrid::GetScrolledBox(child);
       nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
       if (monument) {
         rowCount += monument->BuildRows(deepChild, &aRows[rowCount]);
         child = child->GetNextBox();
         deepChild = child;
         continue;
       }
       aRows[rowCount].Init(child, true);
       child = child->GetNextBox();
       // if not a monument. Then count it. It will be a bogus row
       rowCount++;
     }
   }
   return rowCount;
 }
 nsMargin
 nsGridRowGroupLayout::GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)
 {
   // group have border and padding added to the total margin
   nsMargin margin = nsGridRowLayout::GetTotalMargin(aBox, aIsHorizontal);
   // make sure we have the scrollframe on the outside if it has one.
   // that's where the border is.
   aBox = nsGrid::GetScrollBox(aBox);
   // add our border/padding to it
   nsMargin borderPadding(0,0,0,0);
   aBox->GetBorderAndPadding(borderPadding);
   margin += borderPadding;
   return margin;
 }

The Tor Browser / annotate

layout/xul/grid/nsGridRowGroupLayout.cpp@deefc01c0e14 (annotated)

layout/xul/grid/nsGridRowGroupLayout.cpp