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1<?php
2
3class grad {
4
5var $mpdf = null;
6
7function grad(&$mpdf) {
8 $this->mpdf = $mpdf;
9}
10
11// mPDF 5.3.A1
12function CoonsPatchMesh($x, $y, $w, $h, $patch_array=array(), $x_min=0, $x_max=1, $y_min=0, $y_max=1, $colspace='RGB', $return=false){
13 $s=' q ';
14 $s.=sprintf(' %.3F %.3F %.3F %.3F re W n ', $x*_MPDFK, ($this->mpdf->h-$y)*_MPDFK, $w*_MPDFK, -$h*_MPDFK);
15 $s.=sprintf(' %.3F 0 0 %.3F %.3F %.3F cm ', $w*_MPDFK, $h*_MPDFK, $x*_MPDFK, ($this->mpdf->h-($y+$h))*_MPDFK);
16 $n = count($this->mpdf->gradients)+1;
17 $this->mpdf->gradients[$n]['type'] = 6; //coons patch mesh
18 $this->mpdf->gradients[$n]['colorspace'] = $colspace; //coons patch mesh
19 $bpcd=65535; //16 BitsPerCoordinate
20 $trans = false;
21 $this->mpdf->gradients[$n]['stream']='';
22 for($i=0;$i<count($patch_array);$i++){
23 $this->mpdf->gradients[$n]['stream'].=chr($patch_array[$i]['f']); //start with the edge flag as 8 bit
24 for($j=0;$j<count($patch_array[$i]['points']);$j++){
25 //each point as 16 bit
26 if (($j % 2) == 1) { // Y coordinate (adjusted as input is From top left)
27 $patch_array[$i]['points'][$j]=(($patch_array[$i]['points'][$j]-$y_min)/($y_max-$y_min))*$bpcd;
28 $patch_array[$i]['points'][$j]=$bpcd-$patch_array[$i]['points'][$j];
29 }
30 else {
31 $patch_array[$i]['points'][$j]=(($patch_array[$i]['points'][$j]-$x_min)/($x_max-$x_min))*$bpcd;
32 }
33 if($patch_array[$i]['points'][$j]<0) $patch_array[$i]['points'][$j]=0;
34 if($patch_array[$i]['points'][$j]>$bpcd) $patch_array[$i]['points'][$j]=$bpcd;
35 $this->mpdf->gradients[$n]['stream'].=chr(floor($patch_array[$i]['points'][$j]/256));
36 $this->mpdf->gradients[$n]['stream'].=chr(floor($patch_array[$i]['points'][$j]%256));
37 }
38 for($j=0;$j<count($patch_array[$i]['colors']);$j++){
39 //each color component as 8 bit
40 if ($colspace=='RGB') {
41 $this->mpdf->gradients[$n]['stream'].=($patch_array[$i]['colors'][$j][1]);
42 $this->mpdf->gradients[$n]['stream'].=($patch_array[$i]['colors'][$j][2]);
43 $this->mpdf->gradients[$n]['stream'].=($patch_array[$i]['colors'][$j][3]);
44 if (isset($patch_array[$i]['colors'][$j][4]) && ord($patch_array[$i]['colors'][$j][4])<100) { $trans = true; }
45 }
46 else if ($colspace=='CMYK') {
47 $this->mpdf->gradients[$n]['stream'].=chr(ord($patch_array[$i]['colors'][$j][1])*2.55);
48 $this->mpdf->gradients[$n]['stream'].=chr(ord($patch_array[$i]['colors'][$j][2])*2.55);
49 $this->mpdf->gradients[$n]['stream'].=chr(ord($patch_array[$i]['colors'][$j][3])*2.55);
50 $this->mpdf->gradients[$n]['stream'].=chr(ord($patch_array[$i]['colors'][$j][4])*2.55);
51 if (isset($patch_array[$i]['colors'][$j][5]) && ord($patch_array[$i]['colors'][$j][5])<100) { $trans = true; }
52 }
53 else if ($colspace=='Gray') {
54 $this->mpdf->gradients[$n]['stream'].=($patch_array[$i]['colors'][$j][1]);
55 if ($patch_array[$i]['colors'][$j][2]==1) { $trans = true; } // transparency converted from rgba or cmyka()
56 }
57 }
58 }
59 // TRANSPARENCY
60 if ($trans) {
61 $this->mpdf->gradients[$n]['stream_trans']='';
62 for($i=0;$i<count($patch_array);$i++){
63 $this->mpdf->gradients[$n]['stream_trans'].=chr($patch_array[$i]['f']);
64 for($j=0;$j<count($patch_array[$i]['points']);$j++){
65 //each point as 16 bit
66 $this->mpdf->gradients[$n]['stream_trans'].=chr(floor($patch_array[$i]['points'][$j]/256));
67 $this->mpdf->gradients[$n]['stream_trans'].=chr(floor($patch_array[$i]['points'][$j]%256));
68 }
69 for($j=0;$j<count($patch_array[$i]['colors']);$j++){
70 //each color component as 8 bit // OPACITY
71 if ($colspace=='RGB') {
72 $this->mpdf->gradients[$n]['stream_trans'].=chr(intval(ord($patch_array[$i]['colors'][$j][4])*2.55));
73 }
74 else if ($colspace=='CMYK') {
75 $this->mpdf->gradients[$n]['stream_trans'].=chr(intval(ord($patch_array[$i]['colors'][$j][5])*2.55));
76 }
77 else if ($colspace=='Gray') {
78 $this->mpdf->gradients[$n]['stream_trans'].=chr(intval(ord($patch_array[$i]['colors'][$j][3])*2.55));
79 }
80 }
81 }
82 $this->mpdf->gradients[$n]['trans'] = true;
83 $s .= ' /TGS'.$n.' gs ';
84 }
85 //paint the gradient
86 $s .= '/Sh'.$n.' sh'."\n";
87 //restore previous Graphic State
88 $s .= 'Q'."\n";
89 if ($return) { return $s; }
90 else { $this->mpdf->_out($s); }
91}
92
93
94// type = linear:2; radial: 3;
95// Linear: $coords - array of the form (x1, y1, x2, y2) which defines the gradient vector (see linear_gradient_coords.jpg).
96// The default value is from left to right (x1=0, y1=0, x2=1, y2=0).
97// Radial: $coords - array of the form (fx, fy, cx, cy, r) where (fx, fy) is the starting point of the gradient with color1,
98// (cx, cy) is the center of the circle with color2, and r is the radius of the circle (see radial_gradient_coords.jpg).
99// (fx, fy) should be inside the circle, otherwise some areas will not be defined
100// $col = array(R,G,B/255); or array(G/255); or array(C,M,Y,K/100)
101// $stops = array('col'=>$col [, 'opacity'=>0-1] [, 'offset'=>0-1])
102function Gradient($x, $y, $w, $h, $type, $stops=array(), $colorspace='RGB', $coords='', $extend='', $return=false, $is_mask=false) {
103 if (strtoupper(substr($type,0,1)) == 'L') { $type = 2; } // linear
104 else if (strtoupper(substr($type,0,1)) == 'R') { $type = 3; } // radial
105 if ($colorspace != 'CMYK' && $colorspace != 'Gray') {
106 $colorspace = 'RGB';
107 }
108 $bboxw = $w;
109 $bboxh = $h;
110 $usex = $x;
111 $usey = $y;
112 $usew = $bboxw;
113 $useh = $bboxh;
114 if ($type < 1) { $type = 2; }
115 if ($coords[0]!==false && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$coords[0],$m)) {
116 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
117 if ($tmp) { $coords[0] = $tmp/$w; }
118 }
119 if ($coords[1]!==false && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$coords[1],$m)) {
120 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
121 if ($tmp) { $coords[1] = 1-($tmp/$h); }
122 }
123 // LINEAR
124 if ($type == 2) {
125 $angle = $coords[4];
126 $repeat = $coords[5];
127 // ALL POINTS SET (default for custom mPDF linear gradient) - no -moz
128 if ($coords[0]!==false && $coords[1]!==false && $coords[2]!==false && $coords[3]!==false) {
129 // do nothing - coords used as they are
130 }
131
132 // If both a <point> and <angle> are defined, the gradient axis starts from the point and runs along the angle. The end point is
133 // defined as before - in this case start points may not be in corners, and axis may not correctly fall in the right quadrant.
134 // NO end points (Angle defined & Start points)
135 else if ($angle!==false && $coords[0]!==false && $coords[1]!==false && $coords[2]===false && $coords[3]===false) {
136 if ($angle==0 || $angle==360) { $coords[3]=$coords[1]; if ($coords[0]==1) $coords[2]=2; else $coords[2]=1; }
137 else if ($angle==90) { $coords[2]=$coords[0]; $coords[3]=1; if ($coords[1]==1) $coords[3]=2; else $coords[3]=1; }
138 else if ($angle==180) { if ($coords[4]==0) $coords[2]=-1; else $coords[2]=0; $coords[3]=$coords[1]; }
139 else if ($angle==270) { $coords[2]=$coords[0]; if ($coords[1]==0) $coords[3]=-1; else $coords[3]=0; }
140 else {
141 $endx=1; $endy=1;
142 if ($angle <=90) {
143 if ($angle <=45) { $endy=tan(deg2rad($angle)); }
144 else { $endx=tan(deg2rad(90-$angle)); }
145 $b = atan2(($endy*$bboxh), ($endx*$bboxw));
146 $ny = 1 - $coords[1] - (tan($b) * (1-$coords[0]));
147 $tx = sin($b) * cos($b) * $ny;
148 $ty = cos($b) * cos($b) * $ny;
149 $coords[2] = 1+$tx; $coords[3] = 1-$ty;
150 }
151 else if ($angle <=180) {
152 if ($angle <=135) { $endx=tan(deg2rad($angle-90)); }
153 else { $endy=tan(deg2rad(180-$angle)); }
154 $b = atan2(($endy*$bboxh), ($endx*$bboxw));
155 $ny = 1 - $coords[1] - (tan($b) * ($coords[0]));
156 $tx = sin($b) * cos($b) * $ny;
157 $ty = cos($b) * cos($b) * $ny;
158 $coords[2] = -$tx; $coords[3] = 1-$ty;
159 }
160 else if ($angle <=270) {
161 if ($angle <=225) { $endy=tan(deg2rad($angle-180)); }
162 else { $endx=tan(deg2rad(270-$angle)); }
163 $b = atan2(($endy*$bboxh), ($endx*$bboxw));
164 $ny = $coords[1] - (tan($b) * ($coords[0]));
165 $tx = sin($b) * cos($b) * $ny;
166 $ty = cos($b) * cos($b) * $ny;
167 $coords[2] = -$tx; $coords[3] = $ty;
168 }
169 else {
170 if ($angle <=315) { $endx=tan(deg2rad($angle-270)); }
171 else { $endy=tan(deg2rad(360-$angle)); }
172 $b = atan2(($endy*$bboxh), ($endx*$bboxw));
173 $ny = $coords[1] - (tan($b) * (1-$coords[0]));
174 $tx = sin($b) * cos($b) * $ny;
175 $ty = cos($b) * cos($b) * $ny;
176 $coords[2] = 1+$tx; $coords[3] = $ty;
177
178 }
179 }
180 }
181
182 // -moz If the first parameter is only an <angle>, the gradient axis starts from the box's corner that would ensure the
183 // axis goes through the box. The axis runs along the specified angle. The end point of the axis is defined such that the
184 // farthest corner of the box from the starting point is perpendicular to the gradient axis at that point.
185 // NO end points or Start points (Angle defined)
186 else if ($angle!==false && $coords[0]===false && $coords[1]===false) {
187 if ($angle==0 || $angle==360) { $coords[0]=0; $coords[1]=0; $coords[2]=1; $coords[3]=0; }
188 else if ($angle==90) { $coords[0]=0; $coords[1]=0; $coords[2]=0; $coords[3]=1; }
189 else if ($angle==180) { $coords[0]=1; $coords[1]=0; $coords[2]=0; $coords[3]=0; }
190 else if ($angle==270) { $coords[0]=0; $coords[1]=1; $coords[2]=0; $coords[3]=0; }
191 else {
192 if ($angle <=90) {
193 $coords[0]=0; $coords[1]=0;
194 if ($angle <=45) { $endx=1; $endy=tan(deg2rad($angle)); }
195 else { $endx=tan(deg2rad(90-$angle)); $endy=1; }
196 }
197 else if ($angle <=180) {
198 $coords[0]=1; $coords[1]=0;
199 if ($angle <=135) { $endx=tan(deg2rad($angle-90)); $endy=1; }
200 else { $endx=1; $endy=tan(deg2rad(180-$angle)); }
201 }
202 else if ($angle <=270) {
203 $coords[0]=1; $coords[1]=1;
204 if ($angle <=225) { $endx=1; $endy=tan(deg2rad($angle-180)); }
205 else { $endx=tan(deg2rad(270-$angle)); $endy=1; }
206 }
207 else {
208 $coords[0]=0; $coords[1]=1;
209 if ($angle <=315) { $endx=tan(deg2rad($angle-270)); $endy=1; }
210 else { $endx=1; $endy=tan(deg2rad(360-$angle)); }
211 }
212 $b = atan2(($endy*$bboxh), ($endx*$bboxw));
213 $h2 = $bboxh - ($bboxh * tan($b));
214 $px = $bboxh + ($h2 * sin($b) * cos($b));
215 $py = ($bboxh * tan($b)) + ($h2 * sin($b) * sin($b));
216 $x1 = $px / $bboxh;
217 $y1 = $py / $bboxh;
218 if ($angle <=90) { $coords[2] = $x1; $coords[3] = $y1; }
219 else if ($angle <=180) { $coords[2] = 1-$x1; $coords[3] = $y1; }
220 else if ($angle <=270) { $coords[2] = 1-$x1; $coords[3] = 1-$y1; }
221 else { $coords[2] = $x1; $coords[3] = 1-$y1; }
222 }
223 }
224 // -moz If the first parameter to the gradient function is only a <point>, the gradient axis starts from the specified point,
225 // and ends at the point you would get if you rotated the starting point by 180 degrees about the center of the box that the
226 // gradient is to be applied to.
227 // NO angle and NO end points (Start points defined)
228 else if ((!isset($angle) || $angle===false) && $coords[0]!==false && $coords[1]!==false) { // should have start and end defined
229 $coords[2] = 1-$coords[0]; $coords[3] = 1-$coords[1];
230 $angle = rad2deg(atan2($coords[3]-$coords[1],$coords[2]-$coords[0]));
231 if ($angle < 0) { $angle += 360; }
232 else if ($angle > 360) { $angle -= 360; }
233 if ($angle!=0 && $angle!=360 && $angle!=90 && $angle!=180 && $angle!=270) {
234 if ($w >= $h) {
235 $coords[1] *= $h/$w ;
236 $coords[3] *= $h/$w ;
237 $usew = $useh = $bboxw;
238 $usey -= ($w-$h);
239 }
240 else {
241 $coords[0] *= $w/$h ;
242 $coords[2] *= $w/$h ;
243 $usew = $useh = $bboxh;
244 }
245 }
246 }
247
248 // -moz If neither a <point> or <angle> is specified, i.e. the entire function consists of only <stop> values, the gradient
249 // axis starts from the top of the box and runs vertically downwards, ending at the bottom of the box.
250 else { // default values T2B
251 // All values are set in parseMozGradient - so won't appear here
252 $coords = array(0,0,1,0); // default for original linear gradient (L2R)
253 }
254 $s = ' q';
255 $s .= sprintf(' %.3F %.3F %.3F %.3F re W n', $x*_MPDFK, ($this->mpdf->h-$y)*_MPDFK, $w*_MPDFK, -$h*_MPDFK)."\n";
256 $s .= sprintf(' %.3F 0 0 %.3F %.3F %.3F cm', $usew*_MPDFK, $useh*_MPDFK, $usex*_MPDFK, ($this->mpdf->h-($usey+$useh))*_MPDFK)."\n";
257 }
258
259 // RADIAL
260 else if ($type == 3) {
261 $radius = $coords[4];
262 $angle = $coords[5]; // ?? no effect
263 $shape = $coords[6];
264 $size = $coords[7];
265 $repeat = $coords[8];
266 // ALL POINTS AND RADIUS SET (default for custom mPDF radial gradient) - no -moz
267 if ($coords[0]!==false && $coords[1]!==false && $coords[2]!==false && $coords[3]!==false && $coords[4]!==false) {
268 // do nothing - coords used as they are
269 }
270 // If a <point> is defined
271 else if ($shape!==false && $size!==false) {
272 if ($coords[2]==false) { $coords[2] = $coords[0]; }
273 if ($coords[3]==false) { $coords[3] = $coords[1]; }
274 // ELLIPSE
275 if ($shape=='ellipse') {
276 $corner1 = sqrt(pow($coords[0],2) + pow($coords[1],2));
277 $corner2 = sqrt(pow($coords[0],2) + pow((1-$coords[1]),2));
278 $corner3 = sqrt(pow((1-$coords[0]),2) + pow($coords[1],2));
279 $corner4 = sqrt(pow((1-$coords[0]),2) + pow((1-$coords[1]),2));
280 if ($size=='closest-side') { $radius = min($coords[0], $coords[1], (1-$coords[0]), (1-$coords[1])); }
281 else if ($size=='closest-corner') { $radius = min($corner1, $corner2, $corner3, $corner4); }
282 else if ($size=='farthest-side') { $radius = max($coords[0], $coords[1], (1-$coords[0]), (1-$coords[1])); }
283 else { $radius = max($corner1, $corner2, $corner3, $corner4); } // farthest corner (default)
284 }
285 // CIRCLE
286 else if ($shape=='circle') {
287 if ($w >= $h) {
288 $coords[1] = $coords[3] = ($coords[1] * $h/$w) ;
289 $corner1 = sqrt(pow($coords[0],2) + pow($coords[1],2));
290 $corner2 = sqrt(pow($coords[0],2) + pow((($h/$w)-$coords[1]),2));
291 $corner3 = sqrt(pow((1-$coords[0]),2) + pow($coords[1],2));
292 $corner4 = sqrt(pow((1-$coords[0]),2) + pow((($h/$w)-$coords[1]),2));
293 if ($size=='closest-side') { $radius = min($coords[0], $coords[1], (1-$coords[0]), (($h/$w)-$coords[1])); }
294 else if ($size=='closest-corner') { $radius = min($corner1, $corner2, $corner3, $corner4); }
295 else if ($size=='farthest-side') { $radius = max($coords[0], $coords[1], (1-$coords[0]), (($h/$w)-$coords[1])); }
296 else if ($size=='farthest-corner') { $radius = max($corner1, $corner2, $corner3, $corner4); } // farthest corner (default)
297 $usew = $useh = $bboxw;
298 $usey -= ($w-$h);
299 }
300 else {
301 $coords[0] = $coords[2] = ($coords[0] * $w/$h) ;
302 $corner1 = sqrt(pow($coords[0],2) + pow($coords[1],2));
303 $corner2 = sqrt(pow($coords[0],2) + pow((1-$coords[1]),2));
304 $corner3 = sqrt(pow((($w/$h)-$coords[0]),2) + pow($coords[1],2));
305 $corner4 = sqrt(pow((($w/$h)-$coords[0]),2) + pow((1-$coords[1]),2));
306 if ($size=='closest-side') { $radius = min($coords[0], $coords[1], (($w/$h)-$coords[0]), (1-$coords[1])); }
307 else if ($size=='closest-corner') { $radius = min($corner1, $corner2, $corner3, $corner4); }
308 else if ($size=='farthest-side') { $radius = max($coords[0], $coords[1], (($w/$h)-$coords[0]), (1-$coords[1])); }
309 else if ($size=='farthest-corner') { $radius = max($corner1, $corner2, $corner3, $corner4); } // farthest corner (default)
310 $usew = $useh = $bboxh;
311 }
312 }
313 if ($radius==0) { $radius=0.001; } // to prevent error
314 $coords[4] = $radius;
315 }
316
317 // -moz If entire function consists of only <stop> values
318 else { // default values
319 // All values are set in parseMozGradient - so won't appear here
320 $coords = array(0.5,0.5,0.5,0.5); // default for radial gradient (centred)
321 }
322 $s = ' q';
323 $s .= sprintf(' %.3F %.3F %.3F %.3F re W n', $x*_MPDFK, ($this->mpdf->h-$y)*_MPDFK, $w*_MPDFK, -$h*_MPDFK)."\n";
324 $s .= sprintf(' %.3F 0 0 %.3F %.3F %.3F cm', $usew*_MPDFK, $useh*_MPDFK, $usex*_MPDFK, ($this->mpdf->h-($usey+$useh))*_MPDFK)."\n";
325 }
326
327 $n = count($this->mpdf->gradients) + 1;
328 $this->mpdf->gradients[$n]['type'] = $type;
329 $this->mpdf->gradients[$n]['colorspace'] = $colorspace;
330 $trans = false;
331 $this->mpdf->gradients[$n]['is_mask'] = $is_mask;
332 if ($is_mask) { $trans = true; }
333 if (count($stops) == 1) { $stops[1] = $stops[0]; }
334 if (!isset($stops[0]['offset'])) { $stops[0]['offset'] = 0; }
335 if (!isset($stops[(count($stops)-1)]['offset'])) { $stops[(count($stops)-1)]['offset'] = 1; }
336
337 // Fix stop-offsets set as absolute lengths
338 if ($type==2) {
339 $axisx = ($coords[2]-$coords[0])*$usew;
340 $axisy = ($coords[3]-$coords[1])*$useh;
341 $axis_length = sqrt(pow($axisx,2) + pow($axisy,2));
342 }
343 else { $axis_length = $coords[4]*$usew; } // Absolute lengths are meaningless for an ellipse - Firefox uses Width as reference
344
345 for($i=0;$i<count($stops);$i++) {
346 if (isset($stops[$i]['offset']) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$stops[$i]['offset'],$m)) {
347 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
348 $stops[$i]['offset'] = $tmp/$axis_length;
349 }
350 }
351
352
353 if (isset($stops[0]['offset']) && $stops[0]['offset']>0) {
354 $firststop = $stops[0];
355 $firststop['offset'] = 0;
356 array_unshift($stops, $firststop);
357 }
358 if (!$repeat && isset($stops[(count($stops)-1)]['offset']) && $stops[(count($stops)-1)]['offset']<1) {
359 $endstop = $stops[(count($stops)-1)];
360 $endstop['offset'] = 1;
361 $stops[] = $endstop;
362 }
363 if ($stops[0]['offset'] > $stops[(count($stops)-1)]['offset']) {
364 $stops[0]['offset'] = 0;
365 $stops[(count($stops)-1)]['offset'] = 1;
366 }
367
368 for($i=0;$i<count($stops);$i++) {
369 // mPDF 5.3.74
370 if ($colorspace == 'CMYK') {
371 $this->mpdf->gradients[$n]['stops'][$i]['col'] = sprintf('%.3F %.3F %.3F %.3F', (ord($stops[$i]['col']{1})/100), (ord($stops[$i]['col']{2})/100), (ord($stops[$i]['col']{3})/100), (ord($stops[$i]['col']{4})/100));
372 }
373 else if ($colorspace == 'Gray') {
374 $this->mpdf->gradients[$n]['stops'][$i]['col'] = sprintf('%.3F', (ord($stops[$i]['col']{1})/255));
375 }
376 else {
377 $this->mpdf->gradients[$n]['stops'][$i]['col'] = sprintf('%.3F %.3F %.3F', (ord($stops[$i]['col']{1})/255), (ord($stops[$i]['col']{2})/255), (ord($stops[$i]['col']{3})/255));
378 }
379 if (!isset($stops[$i]['opacity'])) { $stops[$i]['opacity'] = 1; }
380 else if ($stops[$i]['opacity'] > 1 || $stops[$i]['opacity'] < 0) { $stops[$i]['opacity'] = 1; }
381 else if ($stops[$i]['opacity'] < 1) {
382 $trans = true;
383 }
384 $this->mpdf->gradients[$n]['stops'][$i]['opacity'] = $stops[$i]['opacity'];
385 // OFFSET
386 if ($i>0 && $i<(count($stops)-1)) {
387 if (!isset($stops[$i]['offset']) || (isset($stops[$i+1]['offset']) && $stops[$i]['offset']>$stops[$i+1]['offset']) || $stops[$i]['offset']<$stops[$i-1]['offset']) {
388 if (isset($stops[$i-1]['offset']) && isset($stops[$i+1]['offset'])) {
389 $stops[$i]['offset'] = ($stops[$i-1]['offset']+$stops[$i+1]['offset'])/2;
390 }
391 else {
392 for($j=($i+1);$j<count($stops);$j++) {
393 if(isset($stops[$j]['offset'])) { break; }
394 }
395 $int = ($stops[$j]['offset'] - $stops[($i-1)]['offset'])/($j-$i+1);
396 for($f=0;$f<($j-$i-1);$f++) {
397 $stops[($i+$f)]['offset'] = $stops[($i+$f-1)]['offset'] + ($int);
398 }
399 }
400 }
401 }
402 $this->mpdf->gradients[$n]['stops'][$i]['offset'] = $stops[$i]['offset'];
403 $this->mpdf->gradients[$n]['stops'][$i]['offset'] = $stops[$i]['offset'];
404 }
405
406 if ($repeat) {
407 $ns = count($this->mpdf->gradients[$n]['stops']);
408 $offs = array();
409 for($i=0;$i<$ns;$i++) {
410 $offs[$i] = $this->mpdf->gradients[$n]['stops'][$i]['offset'];
411 }
412 $gp = 0;
413 $inside=true;
414 while($inside) {
415 $gp++;
416 for($i=0;$i<$ns;$i++) {
417 $this->mpdf->gradients[$n]['stops'][(($ns*$gp)+$i)] = $this->mpdf->gradients[$n]['stops'][(($ns*($gp-1))+$i)];
418 $tmp = $this->mpdf->gradients[$n]['stops'][(($ns*($gp-1))+($ns-1))]['offset']+$offs[$i] ;
419 if ($tmp < 1) { $this->mpdf->gradients[$n]['stops'][(($ns*$gp)+$i)]['offset'] = $tmp; }
420 else {
421 $this->mpdf->gradients[$n]['stops'][(($ns*$gp)+$i)]['offset'] = 1;
422 $inside = false;
423 break(2);
424 }
425 }
426 }
427 }
428
429 if ($trans) {
430 $this->mpdf->gradients[$n]['trans'] = true;
431 $s .= ' /TGS'.$n.' gs ';
432 }
433 if (!is_array($extend) || count($extend) <1) {
434 $extend=array('true', 'true'); // These are supposed to be quoted - appear in PDF file as text
435 }
436 $this->mpdf->gradients[$n]['coords'] = $coords;
437 $this->mpdf->gradients[$n]['extend'] = $extend;
438 //paint the gradient
439 $s .= '/Sh'.$n.' sh '."\n";
440 //restore previous Graphic State
441 $s .= ' Q '."\n";
442 if ($return) { return $s; }
443 else { $this->mpdf->_out($s); }
444}
445
446
447function parseMozGradient($bg) {
448 // background[-image]: -moz-linear-gradient(left, #c7Fdde 20%, #FF0000 );
449 // background[-image]: linear-gradient(left, #c7Fdde 20%, #FF0000 ); // CSS3
450 if (preg_match('/repeating-/',$bg)) { $repeat = true; }
451 else { $repeat = false; }
452 if (preg_match('/linear-gradient\((.*)\)/',$bg,$m)) {
453 $g = array();
454 $g['type'] = 2;
455 $g['colorspace'] = 'RGB';
456 $g['extend'] = array('true','true');
457 $v = trim($m[1]);
458 // Change commas inside e.g. rgb(x,x,x)
459 while(preg_match('/(\([^\)]*?),/',$v)) { $v = preg_replace('/(\([^\)]*?),/','\\1@',$v); }
460 // Remove spaces inside e.g. rgb(x, x, x)
461 while(preg_match('/(\([^\)]*?)[ ]/',$v)) { $v = preg_replace('/(\([^\)]*?)[ ]/','\\1',$v); }
462 $bgr = preg_split('/\s*,\s*/',$v);
463 for($i=0;$i<count($bgr);$i++) { $bgr[$i] = preg_replace('/@/', ',', $bgr[$i]); }
464 // Is first part $bgr[0] a valid point/angle?
465 $first = preg_split('/\s+/',trim($bgr[0]));
466 if (preg_match('/(left|center|right|bottom|top|deg|grad|rad)/i',$bgr[0]) && !preg_match('/(<#|rgb|rgba|hsl|hsla)/i',$bgr[0])) {
467 $startStops = 1;
468 }
469 else if (trim($first[(count($first)-1)]) === "0") {
470 $startStops = 1;
471 }
472 else {
473 $check = $this->mpdf->ConvertColor($first[0]);
474 if ($check) $startStops = 0;
475 else $startStops = 1;
476 }
477 // first part a valid point/angle?
478 if ($startStops == 1) { // default values
479 // [<point> || <angle>,] = [<% em px left center right bottom top> || <deg grad rad 0>,]
480 if (preg_match('/([\-]*[0-9\.]+)(deg|grad|rad)/i',$bgr[0],$m)) {
481 $angle = $m[1] + 0;
482 if (strtolower($m[2])=='deg') { $angle = $angle; }
483 else if (strtolower($m[2])=='grad') { $angle *= (360/400); }
484 else if (strtolower($m[2])=='rad') { $angle = rad2deg($angle); }
485 while($angle < 0) { $angle += 360; }
486 $angle = ($angle % 360);
487 }
488 else if (trim($first[(count($first)-1)]) === "0") { $angle = 0; }
489 if (preg_match('/left/i',$bgr[0])) { $startx = 0; }
490 else if (preg_match('/right/i',$bgr[0])) { $startx = 1; }
491 if (preg_match('/top/i',$bgr[0])) { $starty = 1; }
492 else if (preg_match('/bottom/i',$bgr[0])) { $starty = 0; }
493 // Check for %? ?% or %%
494 if (preg_match('/(\d+)[%]/i',$first[0],$m)) { $startx = $m[1]/100; }
495 else if (!isset($startx) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$first[0],$m)) {
496 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
497 if ($tmp) { $startx = $m[1]; }
498 }
499 if (isset($first[1]) && preg_match('/(\d+)[%]/i',$first[1],$m)) { $starty = 1 - ($m[1]/100); }
500 else if (!isset($starty) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$first[1],$m)) {
501 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
502 if ($tmp) { $starty = $m[1]; }
503 }
504 if (isset($startx) && !isset($starty)) { $starty = 0.5; }
505 if (!isset($startx) && isset($starty)) { $startx = 0.5; }
506
507 }
508 // If neither a <point> or <angle> is specified, i.e. the entire function consists of only <stop> values, the gradient axis starts from the top of the box and runs vertically downwards, ending at the bottom of the box.
509 else { // default values T2B
510 $starty = 1; $startx = 0.5;
511 $endy = 0; $endx = 0.5;
512 }
513 $coords = array();
514 if (!isset($startx)) { $startx = false; }
515 if (!isset($starty)) { $starty = false; }
516 if (!isset($endx)) { $endx = false; }
517 if (!isset($endy)) { $endy = false; }
518 if (!isset($angle)) { $angle = false; }
519 $g['coords'] = array($startx ,$starty ,$endx ,$endy, $angle, $repeat );
520 $g['stops'] = array();
521 for($i=$startStops;$i<count($bgr);$i++) {
522 $stop = array();
523 // parse stops
524 $el = preg_split('/\s+/',trim($bgr[$i]));
525 // mPDF 5.3.74
526 $col = $this->mpdf->ConvertColor($el[0]);
527 if ($col) { $stop['col'] = $col; }
528 else { $stop['col'] = $col = $this->mpdf->ConvertColor(255); }
529 if ($col{0}==1) $g['colorspace'] = 'Gray';
530 else if ($col{0}==4 || $col{0}==6) $g['colorspace'] = 'CMYK';
531 if ($col{0}==5) { $stop['opacity'] = ord($col{4})/100; } // transparency from rgba()
532 else if ($col{0}==6) { $stop['opacity'] = ord($col{5})/100; } // transparency from cmyka()
533 else if ($col{0}==1 && $col{2}==1) { $stop['opacity'] = ord($col{3})/100; } // transparency converted from rgba or cmyka()
534
535 if (isset($el[1]) && preg_match('/(\d+)[%]/',$el[1],$m)) {
536 $stop['offset'] = $m[1]/100;
537 if ($stop['offset']>1) { unset($stop['offset']); }
538 }
539 else if (isset($el[1]) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$el[1],$m)) {
540 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
541 if ($tmp) { $stop['offset'] = $m[1]; }
542 }
543 $g['stops'][] = $stop;
544 }
545 if (count($g['stops'] )) { return $g; }
546 }
547 else if (preg_match('/radial-gradient\((.*)\)/',$bg,$m)) {
548 $g = array();
549 $g['type'] = 3;
550 $g['colorspace'] = 'RGB';
551 $g['extend'] = array('true','true');
552 $v = trim($m[1]);
553 // Change commas inside e.g. rgb(x,x,x)
554 while(preg_match('/(\([^\)]*?),/',$v)) { $v = preg_replace('/(\([^\)]*?),/','\\1@',$v); }
555 // Remove spaces inside e.g. rgb(x, x, x)
556 while(preg_match('/(\([^\)]*?)[ ]/',$v)) { $v = preg_replace('/(\([^\)]*?)[ ]/','\\1',$v); }
557 $bgr = preg_split('/\s*,\s*/',$v);
558 for($i=0;$i<count($bgr);$i++) { $bgr[$i] = preg_replace('/@/', ',', $bgr[$i]); }
559
560 // Is first part $bgr[0] a valid point/angle?
561 $startStops = 0;
562 $pos_angle = false;
563 $shape_size = false;
564 $first = preg_split('/\s+/',trim($bgr[0]));
565 $checkCol = $this->mpdf->ConvertColor($first[0]);
566 if (preg_match('/(left|center|right|bottom|top|deg|grad|rad)/i',$bgr[0]) && !preg_match('/(<#|rgb|rgba|hsl|hsla)/i',$bgr[0])) {
567 $startStops=1;
568 $pos_angle = $bgr[0];
569 }
570 else if (trim($first[(count($first)-1)]) === "0") {
571 $startStops=1;
572 $pos_angle = $bgr[0];
573 }
574 else if (preg_match('/(circle|ellipse|closest-side|closest-corner|farthest-side|farthest-corner|contain|cover)/i',$bgr[0])) {
575 $startStops=1;
576 $shape_size = $bgr[0];
577 }
578 else if (!$checkCol) {
579 $startStops=1;
580 $pos_angle = $bgr[0];
581 }
582 if (preg_match('/(circle|ellipse|closest-side|closest-corner|farthest-side|farthest-corner|contain|cover)/i',$bgr[1])) {
583 $startStops=2;
584 $shape_size = $bgr[1];
585 }
586
587 // If valid point/angle?
588 if ($pos_angle) { // default values
589 // [<point> || <angle>,] = [<% em px left center right bottom top> || <deg grad rad 0>,]
590 if (preg_match('/left/i',$pos_angle)) { $startx = 0; }
591 else if (preg_match('/right/i',$pos_angle)) { $startx = 1; }
592 if (preg_match('/top/i',$pos_angle)) { $starty = 1; }
593 else if (preg_match('/bottom/i',$pos_angle)) { $starty = 0; }
594 // Check for %? ?% or %%
595 if (preg_match('/(\d+)[%]/i',$first[0],$m)) { $startx = $m[1]/100; }
596 else if (!isset($startx) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$first[0],$m)) {
597 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
598 if ($tmp) { $startx = $m[1]; }
599 }
600 if (isset($first[1]) && preg_match('/(\d+)[%]/i',$first[1],$m)) { $starty = 1 - ($m[1]/100); }
601 else if (!isset($starty) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$first[1],$m)) {
602 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
603 if ($tmp) { $starty = $m[1]; }
604 }
605
606/*
607 // ?? Angle has no effect in radial gradient (does not exist in CSS3 spec.)
608 if (preg_match('/([\-]*[0-9\.]+)(deg|grad|rad)/i',$pos_angle,$m)) {
609 $angle = $m[1] + 0;
610 if (strtolower($m[2])=='deg') { $angle = $angle; }
611 else if (strtolower($m[2])=='grad') { $angle *= (360/400); }
612 else if (strtolower($m[2])=='rad') { $angle = rad2deg($angle); }
613 while($angle < 0) { $angle += 360; }
614 $angle = ($angle % 360);
615 }
616*/
617 if (!isset($starty)) { $starty = 0.5; }
618 if (!isset($startx)) { $startx = 0.5; }
619
620 }
621 // If neither a <point> or <angle> is specified, i.e. the entire function consists of only <stop> values, the gradient axis starts from the top of the box and runs vertically downwards, ending at the bottom of the box.
622 else { // default values Center
623 $starty = 0.5; $startx = 0.5;
624 $endy = 0.5; $endx = 0.5;
625 }
626
627 // If valid shape/size?
628 $shape = 'ellipse'; // default
629 $size = 'farthest-corner'; // default
630 if ($shape_size) { // default values
631 if (preg_match('/(circle|ellipse)/i',$shape_size, $m)) {
632 $shape = $m[1];
633 }
634 if (preg_match('/(closest-side|closest-corner|farthest-side|farthest-corner|contain|cover)/i',$shape_size, $m)) {
635 $size = $m[1];
636 if ($size=='contain') { $size = 'closest-side'; }
637 else if ($size=='cover') { $size = 'farthest-corner'; }
638 }
639 }
640
641 $coords = array();
642 if (!isset($startx)) { $startx = false; }
643 if (!isset($starty)) { $starty = false; }
644 if (!isset($endx)) { $endx = false; }
645 if (!isset($endy)) { $endy = false; }
646 if (!isset($radius)) { $radius = false; }
647 if (!isset($angle)) { $angle = 0; }
648 $g['coords'] = array($startx ,$starty ,$endx ,$endy, $radius, $angle, $shape, $size, $repeat );
649
650 $g['stops'] = array();
651 for($i=$startStops;$i<count($bgr);$i++) {
652 $stop = array();
653 // parse stops
654 $el = preg_split('/\s+/',trim($bgr[$i]));
655 // mPDF 5.3.74
656 $col = $this->mpdf->ConvertColor($el[0]);
657 if ($col) { $stop['col'] = $col; }
658 else { $stop['col'] = $col = $this->mpdf->ConvertColor(255); }
659 if ($col{0}==1) $g['colorspace'] = 'Gray';
660 else if ($col{0}==4 || $col{0}==6) $g['colorspace'] = 'CMYK';
661 if ($col{0}==5) { $stop['opacity'] = ord($col{4})/100; } // transparency from rgba()
662 else if ($col{0}==6) { $stop['opacity'] = ord($col{5})/100; } // transparency from cmyka()
663 else if ($col{0}==1 && $col{2}==1) { $stop['opacity'] = ord($col{3})/100; } // transparency converted from rgba or cmyka()
664
665 if (isset($el[1]) && preg_match('/(\d+)[%]/',$el[1],$m)) {
666 $stop['offset'] = $m[1]/100;
667 if ($stop['offset']>1) { unset($stop['offset']); }
668 }
669 else if (isset($el[1]) && preg_match('/([0-9.]+(px|em|ex|pc|pt|cm|mm|in))/i',$el[1],$m)) {
670 $tmp = $this->mpdf->ConvertSize($m[1],$this->mpdf->w,$this->mpdf->FontSize,false);
671 $stop['offset'] = $el[1];
672 }
673 $g['stops'][] = $stop;
674 }
675 if (count($g['stops'] )) { return $g; }
676 }
677 return array();
678}
679
680function parseBackgroundGradient($bg) {
681 // background-gradient: linear #00FFFF #FFFF00 0 0.5 1 0.5; or
682 // background-gradient: radial #00FFFF #FFFF00 0.5 0.5 1 1 1.2;
683
684 $v = trim($bg);
685 $bgr = preg_split('/\s+/',$v);
686 $g = array();
687 if (count($bgr)> 6) {
688 if (strtoupper(substr($bgr[0],0,1)) == 'L' && count($bgr)==7) { // linear
689 $g['type'] = 2;
690 //$coords = array(0,0,1,1 ); // 0 0 1 0 or 0 1 1 1 is L 2 R; 1,1,0,1 is R2L; 1,1,1,0 is T2B; 1,0,1,1 is B2T
691 // Linear: $coords - array of the form (x1, y1, x2, y2) which defines the gradient vector (see linear_gradient_coords.jpg).
692 // The default value is from left to right (x1=0, y1=0, x2=1, y2=0).
693 $g['coords'] = array($bgr[3], $bgr[4], $bgr[5], $bgr[6]);
694 }
695 else if (count($bgr)==8) { // radial
696 $g['type'] = 3;
697 // Radial: $coords - array of the form (fx, fy, cx, cy, r) where (fx, fy) is the starting point of the gradient with color1,
698 // (cx, cy) is the center of the circle with color2, and r is the radius of the circle (see radial_gradient_coords.jpg).
699 // (fx, fy) should be inside the circle, otherwise some areas will not be defined
700 $g['coords'] = array($bgr[3], $bgr[4], $bgr[5], $bgr[6], $bgr[7]);
701 }
702 $g['colorspace'] = 'RGB';
703 // mPDF 5.3.74
704 $cor = $this->mpdf->ConvertColor($bgr[1]);
705 if ($cor{0}==1) $g['colorspace'] = 'Gray';
706 else if ($cor{0}==4 || $cor{0}==6) $g['colorspace'] = 'CMYK';
707 if ($cor) { $g['col'] = $cor; }
708 else { $g['col'] = $this->mpdf->ConvertColor(255); }
709 $cor = $this->mpdf->ConvertColor($bgr[2]);
710 if ($cor) { $g['col2'] = $cor; }
711 else { $g['col2'] = $this->mpdf->ConvertColor(255); }
712 $g['extend'] = array('true','true');
713 $g['stops'] = array(array('col'=>$g['col'], 'opacity'=>1, 'offset'=>0), array('col'=>$g['col2'], 'opacity'=>1, 'offset'=>1));
714 return $g;
715 }
716 return false;
717}
718
719
720
721}
722
723?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 12:52:41 +0000