AutoFit Rows and Columns with C++

Microsoft Excel lets users auto-size the width and height of cells according to their content. This feature is also available through Aspose.Cells, so developers can auto-size the dimensions of a cell at runtime.

Auto Fitting

Aspose.Cells provides a Workbook class that represents a Microsoft Excel file. The Workbook class contains a Worksheets collection that allows access to each worksheet in an Excel file. A worksheet is represented by the Worksheet class. The Worksheet class provides a wide range of methods for managing a worksheet. This article looks at using the Worksheet class to autofit rows or columns.

AutoFit Row - Simple

The most straightforward approach to auto-sizing the width and height of a row is to call the Worksheet class AutoFitRow method. The AutoFitRow method takes a row index (of the row to be resized) as a parameter.

#include <iostream>
#include "Aspose.Cells.h"

using namespace Aspose::Cells;

int main()
{
    Aspose::Cells::Startup();

    // Source directory path
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");

    // Path of input Excel file
    U16String inputFilePath = srcDir + u"Book1.xlsx";

    // Create workbook from file
    Workbook workbook(inputFilePath);

    // Access the first worksheet in the Excel file
    Worksheet worksheet = workbook.GetWorksheets().Get(0);

    // Auto-fit the 2nd row (index 1) of the worksheet
    worksheet.AutoFitRow(1);

    // Save the modified Excel file
    U16String outputFilePath = srcDir + u"output.xlsx";
    workbook.Save(outputFilePath);

    std::cout << "Row auto-fitted and file saved successfully!" << std::endl;

    Aspose::Cells::Cleanup();
    return 0;
}

How to AutoFit Row in a Range of Cells

A row is composed of many columns. Aspose.Cells allows developers to auto-fit a row based on the content in a range of cells within the row by calling an overloaded version of the AutoFitRow method. It takes the following parameters:

Row index, the index of the row about to be auto-fitted.
First column index, the index of the row’s first column.
Last column index, the index of the row’s last column.

The AutoFitRow method checks the contents of all the columns in the row and then auto-fits the row.

#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;

int main()
{
    Aspose::Cells::Startup();

    // Source directory path
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");

    // Output directory path
    U16String outDir(u"..\\Data\\02_OutputDirectory\\");

    // Path of input Excel file
    U16String inputFilePath = srcDir + u"Book1.xlsx";

    // Path of output Excel file
    U16String outputFilePath = outDir + u"output.xlsx";

    // Open the Excel file
    Workbook workbook(inputFilePath);

    // Accessing the first worksheet in the Excel file
    Worksheet worksheet = workbook.GetWorksheets().Get(0);

    // Auto-fitting the 3rd row of the worksheet
    worksheet.AutoFitRow(1, 0, 5);

    // Save the modified Excel file
    workbook.Save(outputFilePath);

    std::cout << "Row auto-fitted and file saved successfully!" << std::endl;

    Aspose::Cells::Cleanup();
}

How to AutoFit Column in a Range of Cells

A column is composed of many rows. It is possible to auto-fit a column based on the content in a range of cells in the column by calling an overloaded version of the AutoFitColumn method that takes the following parameters:

Column index, the index of the column about to be auto-fitted.
First row index, the index of the column’s first row.
Last row index, the index of the column’s last row.

The AutoFitColumn method checks the contents of all rows in the column and then auto-fits the column.

#include <iostream>
#include "Aspose.Cells.h"

using namespace Aspose::Cells;

int main()
{
    Aspose::Cells::Startup();

    // Source directory path
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");

    // Path of input Excel file
    U16String inputFilePath = srcDir + u"Book1.xlsx";

    // Create workbook from the input file
    Workbook workbook(inputFilePath);

    // Access the first worksheet in the Excel file
    Worksheet worksheet = workbook.GetWorksheets().Get(0);

    // Auto-fit the 5th column (index 4) from row 4 to 6
    worksheet.AutoFitColumn(4, 4, 6);

    // Save the modified Excel file
    U16String outputFilePath = srcDir + u"output.xlsx";
    workbook.Save(outputFilePath);

    std::cout << "Column auto-fitted and file saved successfully!" << std::endl;

    Aspose::Cells::Cleanup();
}

How to AutoFit Rows for Merged Cells

With Aspose.Cells, it is possible to autofit rows even for cells that have been merged using the AutoFitterOptions API. The AutoFitterOptions class provides the GetAutoFitMergedCellsType() property that can be used to autofit rows for merged cells. GetAutoFitMergedCellsType() accepts the AutoFitMergedCellsType enumeration, which has the following members:

None: Ignore merged cells.
FirstLine: Only expands the height of the first row.
LastLine: Only expands the height of the last row.
EachLine: Only expands the height of each row.

#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;

int main()
{
    Aspose::Cells::Startup();

    // Output directory
    U16String outDir(u"..\\Data\\02_OutputDirectory\\");

    // Instantiate a new Workbook
    Workbook wb;

    // Get the first (default) worksheet
    Worksheet worksheet = wb.GetWorksheets().Get(0);

    // Create a range A1:B1
    Range range = worksheet.GetCells().CreateRange(0, 0, 1, 2);

    // Merge the cells
    range.Merge();

    // Insert value to the merged cell A1
    worksheet.GetCells().Get(0, 0).SetValue(u"A quick brown fox jumps over the lazy dog. A quick brown fox jumps over the lazy dog....end");

    // Create a style object
    Style style = worksheet.GetCells().Get(0, 0).GetStyle();

    // Set wrapping text on
    style.SetIsTextWrapped(true);

    // Apply the style to the cell
    worksheet.GetCells().Get(0, 0).SetStyle(style);

    // Create an object for AutoFitterOptions
    AutoFitterOptions options;

    // Set auto-fit for merged cells
    options.SetAutoFitMergedCellsType(AutoFitMergedCellsType::EachLine);

    // Autofit rows in the sheet (including the merged cells)
    worksheet.AutoFitRows(options);

    // Save the Excel file
    wb.Save(outDir + u"AutofitRowsforMergedCells.xlsx");

    std::cout << "Autofit rows for merged cells completed successfully!" << std::endl;

    Aspose::Cells::Cleanup();
}

You may also try to use the overloaded versions of AutoFitRows and AutoFitColumns methods accepting a range of rows/columns and an instance of AutoFitterOptions to auto-fit the selected rows/columns with your desired AutoFitterOptions accordingly.

The signatures of the aforesaid methods are as follows:

AutoFitRows(int startRow, int endRow, AutoFitterOptions options)
AutoFitColumns(int firstColumn, int lastColumn, AutoFitterOptions options)

Important to Know

If a cell is merged, then the AutoFit methods will not be applied, which is the same behavior as in Microsoft Excel. You can get around this by using the auto filter API. Moreover, if the text in a cell is wrapped, the AutoFitColumn method will not be applied either. Another thing you need to know is that the AutoFit methods are time-consuming. So, you should call these methods as seldom as possible to ensure the efficiency of your application.

Advance Topics

AutoFit Rows for Merged Cells

Adjusting Row Height and Column Width Convert Text to Columns using Aspose.Cells with C++