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<?php
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class wmf {
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var $mpdf = null;
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var $gdiObjectArray;
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function wmf(&$mpdf) {
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$this->mpdf = $mpdf;
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}
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function _getWMFimage($data) {
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$k = _MPDFK;
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$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) { $p +=22; } // Aldus header
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// define some state variables
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$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)); $p += 6;
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// size of record given in WORDs (= 2 bytes)
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$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)); $p += 2*($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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// 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) { $nullBrush = true; }
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else {
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$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) { $s .= ' '; }
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}
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$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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if ($i < $numpoints) { $wmfdata .= $this->_LineTo($px, $py); }
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else { $wmfdata .= $this->_MoveTo($px, $py); }
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}
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if ($func == 0x0325) { $op = 's'; }
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else if ($func == 0x0324) {
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if ($nullPen) {
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if ($nullBrush) { $op = 'n'; } // no op
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else { $op = 'f'; } // fill
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}
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else {
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if ($nullBrush) { $op = 's'; } // stroke
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else { $op = 'b'; } // stroke and fill
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}
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if ($polyFillMode==1 && ($op=='b' || $op=='f')) { $op .= '*'; } // use even-odd fill rule
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}
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$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) { $wmfdata .= $this->_MoveTo($px, $py); }
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else { $wmfdata .= $this->_LineTo($px, $py); }
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}
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$adjustment += $numpoints * 2;
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}
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if ($nullPen) {
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if ($nullBrush) { $op = 'n'; } // no op
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else { $op = 'f'; } // fill
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}
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else {
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if ($nullBrush) { $op = 's'; } // stroke
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else { $op = 'b'; } // stroke and fill
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}
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if ($polyFillMode==1 && ($op=='b' || $op=='f')) { $op .= '*'; } // use even-odd fill rule
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$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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return array(1,$wmfdata,$wo,$we);
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}
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function _MoveTo($x, $y) {
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return "$x $y m\n";
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}
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// a line must have been started using _MoveTo() first
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function _LineTo($x, $y) {
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return "$x $y l\n";
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}
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function _AddGDIObject($obj) {
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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] = $obj;
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}
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function _GetGDIObject($idx) {
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return $this->gdiObjectArray[$idx];
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}
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function _DeleteGDIObject($idx) {
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unset($this->gdiObjectArray[$idx]);
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}
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}
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?>
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