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<?php |
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|
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class wmf |
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{ |
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|
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var $mpdf = null; |
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|
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var $gdiObjectArray; |
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|
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public function __construct(mPDF $mpdf) |
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{ |
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$this->mpdf = $mpdf; |
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} |
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|
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function _getWMFimage($data) |
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{ |
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$k = _MPDFK; |
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|
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$this->gdiObjectArray = array(); |
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$a = unpack('stest', "\1\0"); |
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if ($a['test'] != 1) |
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return array(0, 'Error parsing WMF image - Big-endian architecture not supported'); |
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// check for Aldus placeable metafile header |
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$key = unpack('Lmagic', substr($data, 0, 4)); |
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$p = 18; // WMF header |
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if ($key['magic'] == (int) 0x9AC6CDD7) { |
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$p +=22; |
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} // Aldus header |
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// define some state variables |
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$wo = null; // window origin |
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$we = null; // window extent |
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$polyFillMode = 0; |
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$nullPen = false; |
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$nullBrush = false; |
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$endRecord = false; |
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$wmfdata = ''; |
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while ($p < strlen($data) && !$endRecord) { |
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$recordInfo = unpack('Lsize/Sfunc', substr($data, $p, 6)); |
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$p += 6; |
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// size of record given in WORDs (= 2 bytes) |
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$size = $recordInfo['size']; |
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// func is number of GDI function |
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$func = $recordInfo['func']; |
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if ($size > 3) { |
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$parms = substr($data, $p, 2 * ($size - 3)); |
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$p += 2 * ($size - 3); |
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} |
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switch ($func) { |
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case 0x020b: // SetWindowOrg |
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// do not allow window origin to be changed |
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// after drawing has begun |
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if (!$wmfdata) |
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$wo = array_reverse(unpack('s2', $parms)); |
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break; |
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case 0x020c: // SetWindowExt |
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// do not allow window extent to be changed |
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// after drawing has begun |
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if (!$wmfdata) |
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$we = array_reverse(unpack('s2', $parms)); |
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break; |
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case 0x02fc: // CreateBrushIndirect |
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$brush = unpack('sstyle/Cr/Cg/Cb/Ca/Shatch', $parms); |
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$brush['type'] = 'B'; |
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$this->_AddGDIObject($brush); |
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break; |
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case 0x02fa: // CreatePenIndirect |
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$pen = unpack('Sstyle/swidth/sdummy/Cr/Cg/Cb/Ca', $parms); |
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// convert width from twips to user unit |
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$pen['width'] /= (20 * $k); |
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$pen['type'] = 'P'; |
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$this->_AddGDIObject($pen); |
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break; |
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|
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// MUST create other GDI objects even if we don't handle them |
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case 0x06fe: // CreateBitmap |
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case 0x02fd: // CreateBitmapIndirect |
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case 0x00f8: // CreateBrush |
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case 0x02fb: // CreateFontIndirect |
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case 0x00f7: // CreatePalette |
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case 0x01f9: // CreatePatternBrush |
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case 0x06ff: // CreateRegion |
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case 0x0142: // DibCreatePatternBrush |
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$dummyObject = array('type' => 'D'); |
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$this->_AddGDIObject($dummyObject); |
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break; |
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case 0x0106: // SetPolyFillMode |
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$polyFillMode = unpack('smode', $parms); |
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$polyFillMode = $polyFillMode['mode']; |
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break; |
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case 0x01f0: // DeleteObject |
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$idx = unpack('Sidx', $parms); |
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$idx = $idx['idx']; |
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$this->_DeleteGDIObject($idx); |
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break; |
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case 0x012d: // SelectObject |
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$idx = unpack('Sidx', $parms); |
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$idx = $idx['idx']; |
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$obj = $this->_GetGDIObject($idx); |
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switch ($obj['type']) { |
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case 'B': |
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$nullBrush = false; |
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if ($obj['style'] == 1) { |
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$nullBrush = true; |
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} else { |
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$wmfdata .= $this->mpdf->SetFColor($this->mpdf->ConvertColor('rgb(' . $obj['r'] . ',' . $obj['g'] . ',' . $obj['b'] . ')'), true) . "\n"; |
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} |
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break; |
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case 'P': |
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$nullPen = false; |
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$dashArray = array(); |
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// dash parameters are custom |
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switch ($obj['style']) { |
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case 0: // PS_SOLID |
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break; |
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case 1: // PS_DASH |
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$dashArray = array(3, 1); |
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break; |
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case 2: // PS_DOT |
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$dashArray = array(0.5, 0.5); |
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break; |
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case 3: // PS_DASHDOT |
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$dashArray = array(2, 1, 0.5, 1); |
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break; |
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case 4: // PS_DASHDOTDOT |
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$dashArray = array(2, 1, 0.5, 1, 0.5, 1); |
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break; |
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case 5: // PS_NULL |
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$nullPen = true; |
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break; |
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} |
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if (!$nullPen) { |
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$wmfdata .= $this->mpdf->SetDColor($this->mpdf->ConvertColor('rgb(' . $obj['r'] . ',' . $obj['g'] . ',' . $obj['b'] . ')'), true) . "\n"; |
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$wmfdata .= sprintf("%.3F w\n", $obj['width'] * $k); |
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} |
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if (!empty($dashArray)) { |
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$s = '['; |
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for ($i = 0; $i < count($dashArray); $i++) { |
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$s .= $dashArray[$i] * $k; |
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if ($i != count($dashArray) - 1) { |
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$s .= ' '; |
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} |
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} |
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$s .= '] 0 d'; |
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$wmfdata .= $s . "\n"; |
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} |
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break; |
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} |
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break; |
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case 0x0325: // Polyline |
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case 0x0324: // Polygon |
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$coords = unpack('s' . ($size - 3), $parms); |
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$numpoints = $coords[1]; |
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for ($i = $numpoints; $i > 0; $i--) { |
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$px = $coords[2 * $i]; |
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$py = $coords[2 * $i + 1]; |
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|
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if ($i < $numpoints) { |
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$wmfdata .= $this->_LineTo($px, $py); |
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} else { |
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$wmfdata .= $this->_MoveTo($px, $py); |
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} |
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} |
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if ($func == 0x0325) { |
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$op = 's'; |
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} else if ($func == 0x0324) { |
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if ($nullPen) { |
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if ($nullBrush) { |
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$op = 'n'; |
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} // no op |
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else { |
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$op = 'f'; |
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} // fill |
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} else { |
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if ($nullBrush) { |
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$op = 's'; |
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} // stroke |
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else { |
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$op = 'b'; |
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} // stroke and fill |
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} |
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if ($polyFillMode == 1 && ($op == 'b' || $op == 'f')) { |
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$op .= '*'; |
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} // use even-odd fill rule |
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} |
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$wmfdata .= $op . "\n"; |
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break; |
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case 0x0538: // PolyPolygon |
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$coords = unpack('s' . ($size - 3), $parms); |
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$numpolygons = $coords[1]; |
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$adjustment = $numpolygons; |
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for ($j = 1; $j <= $numpolygons; $j++) { |
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$numpoints = $coords[$j + 1]; |
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for ($i = $numpoints; $i > 0; $i--) { |
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$px = $coords[2 * $i + $adjustment]; |
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$py = $coords[2 * $i + 1 + $adjustment]; |
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if ($i == $numpoints) { |
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$wmfdata .= $this->_MoveTo($px, $py); |
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} else { |
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$wmfdata .= $this->_LineTo($px, $py); |
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} |
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} |
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$adjustment += $numpoints * 2; |
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} |
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|
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if ($nullPen) { |
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if ($nullBrush) { |
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$op = 'n'; |
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} // no op |
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else { |
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$op = 'f'; |
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} // fill |
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} else { |
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if ($nullBrush) { |
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$op = 's'; |
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} // stroke |
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else { |
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$op = 'b'; |
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} // stroke and fill |
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} |
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if ($polyFillMode == 1 && ($op == 'b' || $op == 'f')) { |
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$op .= '*'; |
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} // use even-odd fill rule |
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$wmfdata .= $op . "\n"; |
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break; |
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case 0x0000: |
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$endRecord = true; |
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break; |
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} |
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} |
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|
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return array(1, $wmfdata, $wo, $we); |
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} |
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|
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function _MoveTo($x, $y) |
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{ |
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return "$x $y m\n"; |
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} |
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|
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// a line must have been started using _MoveTo() first |
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function _LineTo($x, $y) |
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{ |
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return "$x $y l\n"; |
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} |
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|
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function _AddGDIObject($obj) |
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{ |
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// find next available slot |
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$idx = 0; |
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if (!empty($this->gdiObjectArray)) { |
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$empty = false; |
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$i = 0; |
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while (!$empty) { |
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$empty = !isset($this->gdiObjectArray[$i]); |
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$i++; |
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} |
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$idx = $i - 1; |
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} |
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$this->gdiObjectArray[$idx] = $obj; |
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} |
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|
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function _GetGDIObject($idx) |
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{ |
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return $this->gdiObjectArray[$idx]; |
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} |
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|
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function _DeleteGDIObject($idx) |
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{ |
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unset($this->gdiObjectArray[$idx]); |
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} |
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|
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} |
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|
