1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
<?php
class wmf {
var $mpdf = null;
var $gdiObjectArray;
function wmf(&$mpdf) {
$this->mpdf = $mpdf;
}
function _getWMFimage($data) {
$k = _MPDFK;
$this->gdiObjectArray = array();
$a=unpack('stest',"\1\0");
if ($a['test']!=1)
return array(0, 'Error parsing WMF image - Big-endian architecture not supported');
// check for Aldus placeable metafile header
$key = unpack('Lmagic', substr($data, 0, 4));
$p = 18; // WMF header
if ($key['magic'] == (int)0x9AC6CDD7) { $p +=22; } // Aldus header
// define some state variables
$wo=null; // window origin
$we=null; // window extent
$polyFillMode = 0;
$nullPen = false;
$nullBrush = false;
$endRecord = false;
$wmfdata = '';
while ($p < strlen($data) && !$endRecord) {
$recordInfo = unpack('Lsize/Sfunc', substr($data, $p, 6)); $p += 6;
// size of record given in WORDs (= 2 bytes)
$size = $recordInfo['size'];
// func is number of GDI function
$func = $recordInfo['func'];
if ($size > 3) {
$parms = substr($data, $p, 2*($size-3)); $p += 2*($size-3);
}
switch ($func) {
case 0x020b: // SetWindowOrg
// do not allow window origin to be changed
// after drawing has begun
if (!$wmfdata)
$wo = array_reverse(unpack('s2', $parms));
break;
case 0x020c: // SetWindowExt
// do not allow window extent to be changed
// after drawing has begun
if (!$wmfdata)
$we = array_reverse(unpack('s2', $parms));
break;
case 0x02fc: // CreateBrushIndirect
$brush = unpack('sstyle/Cr/Cg/Cb/Ca/Shatch', $parms);
$brush['type'] = 'B';
$this->_AddGDIObject($brush);
break;
case 0x02fa: // CreatePenIndirect
$pen = unpack('Sstyle/swidth/sdummy/Cr/Cg/Cb/Ca', $parms);
// convert width from twips to user unit
$pen['width'] /= (20 * $k);
$pen['type'] = 'P';
$this->_AddGDIObject($pen);
break;
// MUST create other GDI objects even if we don't handle them
case 0x06fe: // CreateBitmap
case 0x02fd: // CreateBitmapIndirect
case 0x00f8: // CreateBrush
case 0x02fb: // CreateFontIndirect
case 0x00f7: // CreatePalette
case 0x01f9: // CreatePatternBrush
case 0x06ff: // CreateRegion
case 0x0142: // DibCreatePatternBrush
$dummyObject = array('type'=>'D');
$this->_AddGDIObject($dummyObject);
break;
case 0x0106: // SetPolyFillMode
$polyFillMode = unpack('smode', $parms);
$polyFillMode = $polyFillMode['mode'];
break;
case 0x01f0: // DeleteObject
$idx = unpack('Sidx', $parms);
$idx = $idx['idx'];
$this->_DeleteGDIObject($idx);
break;
case 0x012d: // SelectObject
$idx = unpack('Sidx', $parms);
$idx = $idx['idx'];
$obj = $this->_GetGDIObject($idx);
switch ($obj['type']) {
case 'B':
$nullBrush = false;
if ($obj['style'] == 1) { $nullBrush = true; }
else {
$wmfdata .= $this->mpdf->SetFColor($this->mpdf->ConvertColor('rgb('.$obj['r'].','.$obj['g'].','.$obj['b'].')'), true)."\n";
}
break;
case 'P':
$nullPen = false;
$dashArray = array();
// dash parameters are custom
switch ($obj['style']) {
case 0: // PS_SOLID
break;
case 1: // PS_DASH
$dashArray = array(3,1);
break;
case 2: // PS_DOT
$dashArray = array(0.5,0.5);
break;
case 3: // PS_DASHDOT
$dashArray = array(2,1,0.5,1);
break;
case 4: // PS_DASHDOTDOT
$dashArray = array(2,1,0.5,1,0.5,1);
break;
case 5: // PS_NULL
$nullPen = true;
break;
}
if (!$nullPen) {
$wmfdata .= $this->mpdf->SetDColor($this->mpdf->ConvertColor('rgb('.$obj['r'].','.$obj['g'].','.$obj['b'].')'), true)."\n";
$wmfdata .= sprintf("%.3F w\n",$obj['width']*$k);
}
if (!empty($dashArray)) {
$s = '[';
for ($i=0; $i<count($dashArray);$i++) {
$s .= $dashArray[$i] * $k;
if ($i != count($dashArray)-1) { $s .= ' '; }
}
$s .= '] 0 d';
$wmfdata .= $s."\n";
}
break;
}
break;
case 0x0325: // Polyline
case 0x0324: // Polygon
$coords = unpack('s'.($size-3), $parms);
$numpoints = $coords[1];
for ($i = $numpoints; $i > 0; $i--) {
$px = $coords[2*$i];
$py = $coords[2*$i+1];
if ($i < $numpoints) { $wmfdata .= $this->_LineTo($px, $py); }
else { $wmfdata .= $this->_MoveTo($px, $py); }
}
if ($func == 0x0325) { $op = 's'; }
else if ($func == 0x0324) {
if ($nullPen) {
if ($nullBrush) { $op = 'n'; } // no op
else { $op = 'f'; } // fill
}
else {
if ($nullBrush) { $op = 's'; } // stroke
else { $op = 'b'; } // stroke and fill
}
if ($polyFillMode==1 && ($op=='b' || $op=='f')) { $op .= '*'; } // use even-odd fill rule
}
$wmfdata .= $op."\n";
break;
case 0x0538: // PolyPolygon
$coords = unpack('s'.($size-3), $parms);
$numpolygons = $coords[1];
$adjustment = $numpolygons;
for ($j = 1; $j <= $numpolygons; $j++) {
$numpoints = $coords[$j + 1];
for ($i = $numpoints; $i > 0; $i--) {
$px = $coords[2*$i + $adjustment];
$py = $coords[2*$i+1 + $adjustment];
if ($i == $numpoints) { $wmfdata .= $this->_MoveTo($px, $py); }
else { $wmfdata .= $this->_LineTo($px, $py); }
}
$adjustment += $numpoints * 2;
}
if ($nullPen) {
if ($nullBrush) { $op = 'n'; } // no op
else { $op = 'f'; } // fill
}
else {
if ($nullBrush) { $op = 's'; } // stroke
else { $op = 'b'; } // stroke and fill
}
if ($polyFillMode==1 && ($op=='b' || $op=='f')) { $op .= '*'; } // use even-odd fill rule
$wmfdata .= $op."\n";
break;
case 0x0000:
$endRecord = true;
break;
}
}
return array(1,$wmfdata,$wo,$we);
}
function _MoveTo($x, $y) {
return "$x $y m\n";
}
// a line must have been started using _MoveTo() first
function _LineTo($x, $y) {
return "$x $y l\n";
}
function _AddGDIObject($obj) {
// find next available slot
$idx = 0;
if (!empty($this->gdiObjectArray)) {
$empty = false;
$i = 0;
while (!$empty) {
$empty = !isset($this->gdiObjectArray[$i]);
$i++;
}
$idx = $i-1;
}
$this->gdiObjectArray[$idx] = $obj;
}
function _GetGDIObject($idx) {
return $this->gdiObjectArray[$idx];
}
function _DeleteGDIObject($idx) {
unset($this->gdiObjectArray[$idx]);
}
}
?>
|
