QTextTable Class
The QTextTable class represents a table in a QTextDocument. More...
| Header: | #include <QTextTable> |
| qmake: | QT += gui |
| Inherits: | QTextFrame |
Note: All functions in this class are reentrant.
Public Functions
| void | appendColumns(int count) |
| void | appendRows(int count) |
| QTextTableCell | cellAt(int row, int column) const |
| QTextTableCell | cellAt(int position) const |
| QTextTableCell | cellAt(const QTextCursor &cursor) const |
| int | columns() const |
| QTextTableFormat | format() const |
| void | insertColumns(int index, int columns) |
| void | insertRows(int index, int rows) |
| void | mergeCells(int row, int column, int numRows, int numCols) |
| void | mergeCells(const QTextCursor &cursor) |
| void | removeColumns(int index, int columns) |
| void | removeRows(int index, int rows) |
| void | resize(int rows, int columns) |
| QTextCursor | rowEnd(const QTextCursor &cursor) const |
| QTextCursor | rowStart(const QTextCursor &cursor) const |
| int | rows() const |
| void | setFormat(const QTextTableFormat &format) |
| void | splitCell(int row, int column, int numRows, int numCols) |
Detailed Description
A table is a group of cells ordered into rows and columns. Each table contains at least one row and one column. Each cell contains a block, and is surrounded by a frame.
Tables are usually created and inserted into a document with the QTextCursor::insertTable() function. For example, we can insert a table with three rows and two columns at the current cursor position in an editor using the following lines of code:
QTextCursor cursor(editor->textCursor()); cursor.movePosition(QTextCursor::Start); QTextTable *table = cursor.insertTable(rows, columns, tableFormat);
The table format is either defined when the table is created or changed later with setFormat().
The table currently being edited by the cursor is found with QTextCursor::currentTable(). This allows its format or dimensions to be changed after it has been inserted into a document.
A table's size can be changed with resize(), or by using insertRows(), insertColumns(), removeRows(), or removeColumns(). Use cellAt() to retrieve table cells.
The starting and ending positions of table rows can be found by moving a cursor within a table, and using the rowStart() and rowEnd() functions to obtain cursors at the start and end of each row.
Rows and columns within a QTextTable can be merged and split using the mergeCells() and splitCell() functions. However, only cells that span multiple rows or columns can be split. (Merging or splitting does not increase or decrease the number of rows and columns.)
Note that if you have merged multiple columns and rows into one cell, you will not be able to split the merged cell into new cells spanning over more than one row or column. To be able to split cells spanning over several rows and columns you need to do this over several iterations.
Suppose we have a 2x3 table of names and addresses. To merge both columns in the first row we invoke mergeCells() with row = 0, column = 0, numRows = 1 and numColumns = 2.table->mergeCells(0, 0, 1, 2); | |
This gives us the following table. To split the first row of the table back into two cells, we invoke the splitCell() function with numRows and numCols = 1.table->splitCell(0, 0, 1, 1); | |
| This results in the original table. |
See also QTextTableFormat.
Member Function Documentation
void QTextTable::appendColumns(int count)
Appends count columns at the right side of the table.
This function was introduced in Qt 4.5.
See also insertColumns(), insertRows(), resize(), removeRows(), removeColumns(), and appendRows().
void QTextTable::appendRows(int count)
Appends count rows at the bottom of the table.
This function was introduced in Qt 4.5.
See also insertColumns(), insertRows(), resize(), removeRows(), removeColumns(), and appendColumns().
QTextTableCell QTextTable::cellAt(int row, int column) const
Returns the table cell at the given row and column in the table.
See also columns() and rows().
QTextTableCell QTextTable::cellAt(int position) const
This is an overloaded function.
Returns the table cell that contains the character at the given position in the document.
QTextTableCell QTextTable::cellAt(const QTextCursor &cursor) const
This is an overloaded function.
Returns the table cell containing the given cursor.
int QTextTable::columns() const
Returns the number of columns in the table.
See also rows().
QTextTableFormat QTextTable::format() const
Returns the table's format.
See also setFormat().
void QTextTable::insertColumns(int index, int columns)
Inserts a number of columns before the column with the specified index.
See also insertRows(), resize(), removeRows(), removeColumns(), appendRows(), and appendColumns().
void QTextTable::insertRows(int index, int rows)
Inserts a number of rows before the row with the specified index.
See also resize(), insertColumns(), removeRows(), removeColumns(), appendRows(), and appendColumns().
void QTextTable::mergeCells(int row, int column, int numRows, int numCols)
Merges the cell at the specified row and column with the adjacent cells into one cell. The new cell will span numRows rows and numCols columns. This method does nothing if numRows or numCols is less than the current number of rows or columns spanned by the cell.
This function was introduced in Qt 4.1.
See also splitCell().
void QTextTable::mergeCells(const QTextCursor &cursor)
This is an overloaded function.
Merges the cells selected by the provided cursor.
This function was introduced in Qt 4.1.
See also splitCell().
void QTextTable::removeColumns(int index, int columns)
Removes a number of columns starting with the column at the specified index.
See also insertRows(), insertColumns(), removeRows(), resize(), appendRows(), and appendColumns().
void QTextTable::removeRows(int index, int rows)
Removes a number of rows starting with the row at the specified index.
See also insertRows(), insertColumns(), resize(), removeColumns(), appendRows(), and appendColumns().
void QTextTable::resize(int rows, int columns)
Resizes the table to contain the required number of rows and columns.
See also insertRows(), insertColumns(), removeRows(), and removeColumns().
QTextCursor QTextTable::rowEnd(const QTextCursor &cursor) const
Returns a cursor pointing to the end of the row that contains the given cursor.
See also rowStart().
QTextCursor QTextTable::rowStart(const QTextCursor &cursor) const
Returns a cursor pointing to the start of the row that contains the given cursor.
See also rowEnd().
int QTextTable::rows() const
Returns the number of rows in the table.
See also columns().
void QTextTable::setFormat(const QTextTableFormat &format)
Sets the table's format.
See also format().
void QTextTable::splitCell(int row, int column, int numRows, int numCols)
Splits the specified cell at row and column into an array of multiple cells with dimensions specified by numRows and numCols.
Note: It is only possible to split cells that span multiple rows or columns, such as rows that have been merged using mergeCells().
This function was introduced in Qt 4.1.
See also mergeCells().
© 2020 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.