<?php
namespace PhpOffice\PhpSpreadsheet\Shared;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Helper\Dimension;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
class Xls
{
/**
* Get the width of a column in pixels. We use the relationship y = ceil(7x) where
* x is the width in intrinsic Excel units (measuring width in number of normal characters)
* This holds for Arial 10.
*
* @param Worksheet $worksheet The sheet
* @param string $col The column
*
* @return int The width in pixels
*/
public static function sizeCol(Worksheet $worksheet, $col = 'A')
{
// default font of the workbook
$font = $worksheet->getParentOrThrow()->getDefaultStyle()->getFont();
$columnDimensions = $worksheet->getColumnDimensions();
// first find the true column width in pixels (uncollapsed and unhidden)
if (isset($columnDimensions[$col]) && $columnDimensions[$col]->getWidth() != -1) {
// then we have column dimension with explicit width
$columnDimension = $columnDimensions[$col];
$width = $columnDimension->getWidth();
$pixelWidth = Drawing::cellDimensionToPixels($width, $font);
} elseif ($worksheet->getDefaultColumnDimension()->getWidth() != -1) {
// then we have default column dimension with explicit width
$defaultColumnDimension = $worksheet->getDefaultColumnDimension();
$width = $defaultColumnDimension->getWidth();
$pixelWidth = Drawing::cellDimensionToPixels($width, $font);
} else {
// we don't even have any default column dimension. Width depends on default font
$pixelWidth = Font::getDefaultColumnWidthByFont($font, true);
}
// now find the effective column width in pixels
if (isset($columnDimensions[$col]) && !$columnDimensions[$col]->getVisible()) {
$effectivePixelWidth = 0;
} else {
$effectivePixelWidth = $pixelWidth;
}
return $effectivePixelWidth;
}
/**
* Convert the height of a cell from user's units to pixels. By interpolation
* the relationship is: y = 4/3x. If the height hasn't been set by the user we
* use the default value. If the row is hidden we use a value of zero.
*
* @param Worksheet $worksheet The sheet
* @param int $row The row index (1-based)
*
* @return int The width in pixels
*/
public static function sizeRow(Worksheet $worksheet, $row = 1)
{
// default font of the workbook
$font = $worksheet->getParentOrThrow()->getDefaultStyle()->getFont();
$rowDimensions = $worksheet->getRowDimensions();
// first find the true row height in pixels (uncollapsed and unhidden)
if (isset($rowDimensions[$row]) && $rowDimensions[$row]->getRowHeight() != -1) {
// then we have a row dimension
$rowDimension = $rowDimensions[$row];
$rowHeight = $rowDimension->getRowHeight();
$pixelRowHeight = (int) ceil(4 * $rowHeight / 3); // here we assume Arial 10
} elseif ($worksheet->getDefaultRowDimension()->getRowHeight() != -1) {
// then we have a default row dimension with explicit height
$defaultRowDimension = $worksheet->getDefaultRowDimension();
$pixelRowHeight = $defaultRowDimension->getRowHeight(Dimension::UOM_PIXELS);
} else {
// we don't even have any default row dimension. Height depends on default font
$pointRowHeight = Font::getDefaultRowHeightByFont($font);
$pixelRowHeight = Font::fontSizeToPixels((int) $pointRowHeight);
}
// now find the effective row height in pixels
if (isset($rowDimensions[$row]) && !$rowDimensions[$row]->getVisible()) {
$effectivePixelRowHeight = 0;
} else {
$effectivePixelRowHeight = $pixelRowHeight;
}
return (int) $effectivePixelRowHeight;
}
/**
* Get the horizontal distance in pixels between two anchors
* The distanceX is found as sum of all the spanning columns widths minus correction for the two offsets.
*
* @param string $startColumn
* @param int $startOffsetX Offset within start cell measured in 1/1024 of the cell width
* @param string $endColumn
* @param int $endOffsetX Offset within end cell measured in 1/1024 of the cell width
*
* @return int Horizontal measured in pixels
*/
public static function getDistanceX(Worksheet $worksheet, $startColumn = 'A', $startOffsetX = 0, $endColumn = 'A', $endOffsetX = 0)
{
$distanceX = 0;
// add the widths of the spanning columns
$startColumnIndex = Coordinate::columnIndexFromString($startColumn);
$endColumnIndex = Coordinate::columnIndexFromString($endColumn);
for ($i = $startColumnIndex; $i <= $endColumnIndex; ++$i) {
$distanceX += self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($i));
}
// correct for offsetX in startcell
$distanceX -= (int) floor(self::sizeCol($worksheet, $startColumn) * $startOffsetX / 1024);
// correct for offsetX in endcell
$distanceX -= (int) floor(self::sizeCol($worksheet, $endColumn) * (1 - $endOffsetX / 1024));
return $distanceX;
}
/**
* Get the vertical distance in pixels between two anchors
* The distanceY is found as sum of all the spanning rows minus two offsets.
*
* @param int $startRow (1-based)
* @param int $startOffsetY Offset within start cell measured in 1/256 of the cell height
* @param int $endRow (1-based)
* @param int $endOffsetY Offset within end cell measured in 1/256 of the cell height
*
* @return int Vertical distance measured in pixels
*/
public static function getDistanceY(Worksheet $worksheet, $startRow = 1, $startOffsetY = 0, $endRow = 1, $endOffsetY = 0)
{
$distanceY = 0;
// add the widths of the spanning rows
for ($row = $startRow; $row <= $endRow; ++$row) {
$distanceY += self::sizeRow($worksheet, $row);
}
// correct for offsetX in startcell
$distanceY -= (int) floor(self::sizeRow($worksheet, $startRow) * $startOffsetY / 256);
// correct for offsetX in endcell
$distanceY -= (int) floor(self::sizeRow($worksheet, $endRow) * (1 - $endOffsetY / 256));
return $distanceY;
}
/**
* Convert 1-cell anchor coordinates to 2-cell anchor coordinates
* This function is ported from PEAR Spreadsheet_Writer_Excel with small modifications.
*
* Calculate the vertices that define the position of the image as required by
* the OBJ record.
*
* +------------+------------+
* | A | B |
* +-----+------------+------------+
* | |(x1,y1) | |
* | 1 |(A1)._______|______ |
* | | | | |
* | | | | |
* +-----+----| BITMAP |-----+
* | | | | |
* | 2 | |______________. |
* | | | (B2)|
* | | | (x2,y2)|
* +---- +------------+------------+
*
* Example of a bitmap that covers some of the area from cell A1 to cell B2.
*
* Based on the width and height of the bitmap we need to calculate 8 vars:
* $col_start, $row_start, $col_end, $row_end, $x1, $y1, $x2, $y2.
* The width and height of the cells are also variable and have to be taken into
* account.
* The values of $col_start and $row_start are passed in from the calling
* function. The values of $col_end and $row_end are calculated by subtracting
* the width and height of the bitmap from the width and height of the
* underlying cells.
* The vertices are expressed as a percentage of the underlying cell width as
* follows (rhs values are in pixels):
*
* x1 = X / W *1024
* y1 = Y / H *256
* x2 = (X-1) / W *1024
* y2 = (Y-1) / H *256
*
* Where: X is distance from the left side of the underlying cell
* Y is distance from the top of the underlying cell
* W is the width of the cell
* H is the height of the cell
*
* @param string $coordinates E.g. 'A1'
* @param int $offsetX Horizontal offset in pixels
* @param int $offsetY Vertical offset in pixels
* @param int $width Width in pixels
* @param int $height Height in pixels
*
* @return null|array
*/
public static function oneAnchor2twoAnchor(Worksheet $worksheet, $coordinates, $offsetX, $offsetY, $width, $height)
{
[$col_start, $row] = Coordinate::indexesFromString($coordinates);
$row_start = $row - 1;
$x1 = $offsetX;
$y1 = $offsetY;
// Initialise end cell to the same as the start cell
$col_end = $col_start; // Col containing lower right corner of object
$row_end = $row_start; // Row containing bottom right corner of object
// Zero the specified offset if greater than the cell dimensions
if ($x1 >= self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_start))) {
$x1 = 0;
}
if ($y1 >= self::sizeRow($worksheet, $row_start + 1)) {
$y1 = 0;
}
$width = $width + $x1 - 1;
$height = $height + $y1 - 1;
// Subtract the underlying cell widths to find the end cell of the image
while ($width >= self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_end))) {
$width -= self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_end));
++$col_end;
}
// Subtract the underlying cell heights to find the end cell of the image
while ($height >= self::sizeRow($worksheet, $row_end + 1)) {
$height -= self::sizeRow($worksheet, $row_end + 1);
++$row_end;
}
// Bitmap isn't allowed to start or finish in a hidden cell, i.e. a cell
// with zero height or width.
if (self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_start)) == 0) {
return null;
}
if (self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_end)) == 0) {
return null;
}
if (self::sizeRow($worksheet, $row_start + 1) == 0) {
return null;
}
if (self::sizeRow($worksheet, $row_end + 1) == 0) {
return null;
}
// Convert the pixel values to the percentage value expected by Excel
$x1 = $x1 / self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_start)) * 1024;
$y1 = $y1 / self::sizeRow($worksheet, $row_start + 1) * 256;
$x2 = ($width + 1) / self::sizeCol($worksheet, Coordinate::stringFromColumnIndex($col_end)) * 1024; // Distance to right side of object
$y2 = ($height + 1) / self::sizeRow($worksheet, $row_end + 1) * 256; // Distance to bottom of object
$startCoordinates = Coordinate::stringFromColumnIndex($col_start) . ($row_start + 1);
$endCoordinates = Coordinate::stringFromColumnIndex($col_end) . ($row_end + 1);
return [
'startCoordinates' => $startCoordinates,
'startOffsetX' => $x1,
'startOffsetY' => $y1,
'endCoordinates' => $endCoordinates,
'endOffsetX' => $x2,
'endOffsetY' => $y2,
];
}
}
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