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#
# This file is part of the LibreOffice project.
#
# 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/.
#
# This file incorporates work covered by the following license notice:
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed
# with this work for additional information regarding copyright
# ownership. The ASF licenses this file to you under the Apache
# License, Version 2.0 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.apache.org/licenses/LICENSE-2.0 .
#
All paragraphs in tables:
sprms:
0x2416 (sprmPFInTable) indicates a paragraph is in a table
0x6649 (sprmPTableDepth) demarks the nesting depth of the paragraph
paragraph at nesting depth 1:
end of cell: 0x7
end of row: 0x7 + sprm 0x2417(sprmFTtp)
the end of a row has its own 0x7
paragraphs at nesting depth > 1;
end of cell: 0xd + sprm 0x244b(sprmPCell)
end of row 0xd + sprm 0x244b(sprmPCell) + sprm 0x244c(sprmPRow)
the end of a row has its own 0xd
Algorithm to detect table structure:
Datastructures:
RowData<Handle>:
int getCellCount()
// return number of cells in row
Handle getStart(i)
// get handle for start of cell i
Handle getEnd(i)
// get handle for end off cell i
Properties getProperties()
// return properties of row
TableData<Handle>:
void addCell(Handle start, Handle end)
// insert cell starting at start and ending at end into the
// current row
void endRow(properties)
// end current row and save properties for that row, begin new row
int getRowCount
// return number of rows in table
RowData<Handle> getRow(i)
// get data for row i
prevTableDepth
depth in table hierarchy of previous paragraph
curTableDepth
depth in table hierarchy of current paragraph
bInCell
true if current paragraph is in a cell
bEndCell
true if current paragraph if the last paragraph of a cell
bEndRow
true if current paragraph is the end of a row
paragraphHandle
handle for current paragraph
initial:
create stack of TableData<Handle>
final:
handle remaining TableData<Handle> on stack
creating StreamHandler:
push new TableData<Handle> on stack
destroying StreamHandler:
handle TableData<Handle> on top of stack
pop TableData<Handle> from stack
StreamHandler::substream:
push new TableData<Handle> on stack
handle TableData<Handle> on top of stack
pop TableData<Handle> from stack
starting paragraph group:
paragraphHandle = currentHandle;
bInCell = false;
bCellEnd = false;
bRowEnd = false;
ending paragraph group:
difference = curTableDepth - prevTableDepth
if (difference > 0)
push difference new TableData<Handle> onto stack
else if (difference < 0)
{
repeat difference times
{
handle top of stack
pop stack
}
}
precTableDepth = curTableDepth
if (bInCell)
{
if (handleStart is null)
handleStart = paragraphHandle;
if (bCellEnd)
{
stack.top().addCell(handleStart, paragraphHandle);
clear handleStart
}
if (bRowEnd)
{
stack.top().endRow(properties)
}
in StreamHandler::props:
save properties
PropertiesHandler::sprm:
sprm 0x6649:
save value in curTableDepth
sprm 0x2416:
bInCell = true
sprm 0x244b:
bCellEnd = true
sprm 0x2417:
bRowEnd = true
text:
0x7:
bCellEnd = true
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