<?php
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namespace PhpOffice\PhpSpreadsheet\Shared;
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use SimpleXMLElement;
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class Drawing
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{
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/**
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* Convert pixels to EMU.
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*
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* @param int $pixelValue Value in pixels
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*
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* @return float|int Value in EMU
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*/
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public static function pixelsToEMU(int $pixelValue): int|float
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{
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return $pixelValue * 9525;
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}
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/**
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* Convert EMU to pixels.
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*
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* @param int|SimpleXMLElement $emuValue Value in EMU
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*
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* @return int Value in pixels
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*/
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public static function EMUToPixels($emuValue): int
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{
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$emuValue = (int) $emuValue;
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if ($emuValue != 0) {
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return (int) round($emuValue / 9525);
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}
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return 0;
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}
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/**
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* Convert pixels to column width. Exact algorithm not known.
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* By inspection of a real Excel file using Calibri 11, one finds 1000px ~ 142.85546875
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* This gives a conversion factor of 7. Also, we assume that pixels and font size are proportional.
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*
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* @param int $pixelValue Value in pixels
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*
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* @return float|int Value in cell dimension
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*/
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public static function pixelsToCellDimension(int $pixelValue, \PhpOffice\PhpSpreadsheet\Style\Font $defaultFont): int|float
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{
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// Font name and size
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$name = $defaultFont->getName();
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$size = $defaultFont->getSize();
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if (isset(Font::DEFAULT_COLUMN_WIDTHS[$name][$size])) {
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// Exact width can be determined
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return $pixelValue * Font::DEFAULT_COLUMN_WIDTHS[$name][$size]['width']
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/ Font::DEFAULT_COLUMN_WIDTHS[$name][$size]['px'];
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}
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// We don't have data for this particular font and size, use approximation by
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// extrapolating from Calibri 11
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return $pixelValue * 11 * Font::DEFAULT_COLUMN_WIDTHS['Calibri'][11]['width']
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/ Font::DEFAULT_COLUMN_WIDTHS['Calibri'][11]['px'] / $size;
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}
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/**
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* Convert column width from (intrinsic) Excel units to pixels.
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*
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* @param float $cellWidth Value in cell dimension
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* @param \PhpOffice\PhpSpreadsheet\Style\Font $defaultFont Default font of the workbook
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*
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* @return int Value in pixels
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*/
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public static function cellDimensionToPixels(float $cellWidth, \PhpOffice\PhpSpreadsheet\Style\Font $defaultFont): int
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{
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// Font name and size
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$name = $defaultFont->getName();
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$size = $defaultFont->getSize();
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if (isset(Font::DEFAULT_COLUMN_WIDTHS[$name][$size])) {
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// Exact width can be determined
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$colWidth = $cellWidth * Font::DEFAULT_COLUMN_WIDTHS[$name][$size]['px']
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/ Font::DEFAULT_COLUMN_WIDTHS[$name][$size]['width'];
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} else {
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// We don't have data for this particular font and size, use approximation by
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// extrapolating from Calibri 11
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$colWidth = $cellWidth * $size * Font::DEFAULT_COLUMN_WIDTHS['Calibri'][11]['px']
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/ Font::DEFAULT_COLUMN_WIDTHS['Calibri'][11]['width'] / 11;
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}
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// Round pixels to closest integer
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$colWidth = (int) round($colWidth);
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return $colWidth;
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}
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/**
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* Convert pixels to points.
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*
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* @param int $pixelValue Value in pixels
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*
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* @return float Value in points
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*/
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public static function pixelsToPoints(int $pixelValue): float
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{
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return $pixelValue * 0.75;
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}
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/**
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* Convert points to pixels.
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*
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* @param float|int $pointValue Value in points
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*
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* @return int Value in pixels
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*/
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public static function pointsToPixels($pointValue): int
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{
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if ($pointValue != 0) {
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return (int) ceil($pointValue / 0.75);
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}
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return 0;
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}
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/**
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* Convert degrees to angle.
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*
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* @param int $degrees Degrees
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*
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* @return int Angle
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*/
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public static function degreesToAngle(int $degrees): int
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{
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return (int) round($degrees * 60000);
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}
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/**
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* Convert angle to degrees.
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*
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* @param int|SimpleXMLElement $angle Angle
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*
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* @return int Degrees
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*/
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public static function angleToDegrees($angle): int
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{
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$angle = (int) $angle;
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if ($angle != 0) {
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return (int) round($angle / 60000);
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}
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return 0;
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}
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}
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