[3019] | 1 | <?php |
---|
| 2 | /** |
---|
| 3 | * DOMPDF - PHP5 HTML to PDF renderer |
---|
| 4 | * |
---|
| 5 | * File: $RCSfile: gd_adapter.cls.php,v $ |
---|
| 6 | * Created on: 2004-06-06 |
---|
| 7 | * |
---|
| 8 | * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca> |
---|
| 9 | * |
---|
| 10 | * This library is free software; you can redistribute it and/or |
---|
| 11 | * modify it under the terms of the GNU Lesser General Public |
---|
| 12 | * License as published by the Free Software Foundation; either |
---|
| 13 | * version 2.1 of the License, or (at your option) any later version. |
---|
| 14 | * |
---|
| 15 | * This library is distributed in the hope that it will be useful, |
---|
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
| 18 | * Lesser General Public License for more details. |
---|
| 19 | * |
---|
| 20 | * You should have received a copy of the GNU Lesser General Public License |
---|
| 21 | * along with this library in the file LICENSE.LGPL; if not, write to the |
---|
| 22 | * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
---|
| 23 | * 02111-1307 USA |
---|
| 24 | * |
---|
| 25 | * Alternatively, you may distribute this software under the terms of the |
---|
| 26 | * PHP License, version 3.0 or later. A copy of this license should have |
---|
| 27 | * been distributed with this file in the file LICENSE.PHP . If this is not |
---|
| 28 | * the case, you can obtain a copy at http://www.php.net/license/3_0.txt. |
---|
| 29 | * |
---|
| 30 | * The latest version of DOMPDF might be available at: |
---|
| 31 | * http://www.digitaljunkies.ca/dompdf |
---|
| 32 | * |
---|
| 33 | * @link http://www.digitaljunkies.ca/dompdf |
---|
| 34 | * @copyright 2004 Benj Carson |
---|
| 35 | * @author Benj Carson <benjcarson@digitaljunkies.ca> |
---|
| 36 | * @package dompdf |
---|
| 37 | * @version 0.5.1 |
---|
| 38 | */ |
---|
| 39 | |
---|
| 40 | /* $Id */ |
---|
| 41 | |
---|
| 42 | /** |
---|
| 43 | * Image rendering interface |
---|
| 44 | * |
---|
| 45 | * Renders to an image format supported by GD (jpeg, gif, png, xpm). |
---|
| 46 | * Not super-useful day-to-day but handy nonetheless |
---|
| 47 | * |
---|
| 48 | * @package dompdf |
---|
| 49 | */ |
---|
| 50 | class GD_Adapter implements Canvas { |
---|
| 51 | |
---|
| 52 | /** |
---|
| 53 | * Resoure handle for the image |
---|
| 54 | * |
---|
| 55 | * @var resource |
---|
| 56 | */ |
---|
| 57 | private $_img; |
---|
| 58 | |
---|
| 59 | /** |
---|
| 60 | * Image width in pixels |
---|
| 61 | * |
---|
| 62 | * @var int |
---|
| 63 | */ |
---|
| 64 | private $_width; |
---|
| 65 | |
---|
| 66 | /** |
---|
| 67 | * Image height in pixels |
---|
| 68 | * |
---|
| 69 | * @var int |
---|
| 70 | */ |
---|
| 71 | private $_height; |
---|
| 72 | |
---|
| 73 | /** |
---|
| 74 | * Image antialias factor |
---|
| 75 | * |
---|
| 76 | * @var float |
---|
| 77 | */ |
---|
| 78 | private $_aa_factor; |
---|
| 79 | |
---|
| 80 | /** |
---|
| 81 | * Allocated colors |
---|
| 82 | * |
---|
| 83 | * @var array |
---|
| 84 | */ |
---|
| 85 | private $_colors; |
---|
| 86 | |
---|
| 87 | /** |
---|
| 88 | * Background color |
---|
| 89 | * |
---|
| 90 | * @var int |
---|
| 91 | */ |
---|
| 92 | private $_bg_color; |
---|
| 93 | |
---|
| 94 | /** |
---|
| 95 | * Class constructor |
---|
| 96 | * |
---|
| 97 | * @param mixed $size The size of image to create: array(x1,y1,x2,y2) or "letter", "legal", etc. |
---|
| 98 | * @param string $orientation The orientation of the document (either 'landscape' or 'portrait') |
---|
| 99 | * @param float $aa_factor Anti-aliasing factor, 1 for no AA |
---|
| 100 | * @param array $bg_color Image background color: array(r,g,b,a), 0 <= r,g,b,a <= 1 |
---|
| 101 | */ |
---|
| 102 | function __construct($size, $orientation = "portrait", $aa_factor = 1, $bg_color = array(1,1,1,0) ) { |
---|
| 103 | |
---|
| 104 | if ( !is_array($size) ) { |
---|
| 105 | |
---|
| 106 | if ( isset(CPDF_Adapter::$PAPER_SIZES[ strtolower($size)]) ) |
---|
| 107 | $size = CPDF_Adapter::$PAPER_SIZES[$size]; |
---|
| 108 | else |
---|
| 109 | $size = CPDF_Adapter::$PAPER_SIZES["letter"]; |
---|
| 110 | |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | if ( strtolower($orientation) == "landscape" ) { |
---|
| 114 | list($size[2],$size[3]) = array($size[3],$size[2]); |
---|
| 115 | } |
---|
| 116 | |
---|
| 117 | if ( $aa_factor < 1 ) |
---|
| 118 | $aa_factor = 1; |
---|
| 119 | |
---|
| 120 | $this->_aa_factor = $aa_factor; |
---|
| 121 | |
---|
| 122 | $size[2] *= $aa_factor; |
---|
| 123 | $size[3] *= $aa_factor; |
---|
| 124 | |
---|
| 125 | $this->_width = $size[2] - $size[0]; |
---|
| 126 | $this->_height = $size[3] - $size[1]; |
---|
| 127 | |
---|
| 128 | $this->_img = imagecreatetruecolor($this->_width, $this->_height); |
---|
| 129 | |
---|
| 130 | if ( is_null($bg_color) || !is_array($bg_color) ) { |
---|
| 131 | // Pure white bg |
---|
| 132 | $bg_color = array(1,1,1,0); |
---|
| 133 | } |
---|
| 134 | |
---|
| 135 | $this->_bg_color = $this->_allocate_color($bg_color); |
---|
| 136 | imagealphablending($this->_img, false); |
---|
| 137 | imagesavealpha($this->_img, true); |
---|
| 138 | imagefill($this->_img, 0, 0, $this->_bg_color); |
---|
| 139 | |
---|
| 140 | } |
---|
| 141 | |
---|
| 142 | /** |
---|
| 143 | * Return the GF image resource |
---|
| 144 | * |
---|
| 145 | * @return resource |
---|
| 146 | */ |
---|
| 147 | function get_image() { return $this->_img; } |
---|
| 148 | |
---|
| 149 | /** |
---|
| 150 | * Return the image's width in pixels |
---|
| 151 | * |
---|
| 152 | * @return float |
---|
| 153 | */ |
---|
| 154 | function get_width() { return $this->_width / $this->_aa_factor; } |
---|
| 155 | |
---|
| 156 | /** |
---|
| 157 | * Return the image's height in pixels |
---|
| 158 | * |
---|
| 159 | * @return float |
---|
| 160 | */ |
---|
| 161 | function get_height() { return $this->_height / $this->_aa_factor; } |
---|
| 162 | |
---|
| 163 | /** |
---|
| 164 | * Returns the current page number |
---|
| 165 | * |
---|
| 166 | * @return int |
---|
| 167 | */ |
---|
| 168 | function get_page_number() { |
---|
| 169 | // FIXME |
---|
| 170 | } |
---|
| 171 | |
---|
| 172 | /** |
---|
| 173 | * Returns the total number of pages |
---|
| 174 | * |
---|
| 175 | * @return int |
---|
| 176 | */ |
---|
| 177 | function get_page_count() { |
---|
| 178 | // FIXME |
---|
| 179 | } |
---|
| 180 | |
---|
| 181 | /** |
---|
| 182 | * Sets the total number of pages |
---|
| 183 | * |
---|
| 184 | * @param int $count |
---|
| 185 | */ |
---|
| 186 | function set_page_count($count) { |
---|
| 187 | // FIXME |
---|
| 188 | } |
---|
| 189 | |
---|
| 190 | /** |
---|
| 191 | * Allocate a new color. Allocate with GD as needed and store |
---|
| 192 | * previously allocated colors in $this->_colors. |
---|
| 193 | * |
---|
| 194 | * @param array $color The new current color |
---|
| 195 | * @return int The allocated color |
---|
| 196 | */ |
---|
| 197 | private function _allocate_color($color) { |
---|
| 198 | |
---|
| 199 | // Full opacity if no alpha set |
---|
| 200 | if ( !isset($color[3]) ) |
---|
| 201 | $color[3] = 0; |
---|
| 202 | |
---|
| 203 | list($r,$g,$b,$a) = $color; |
---|
| 204 | |
---|
| 205 | $r *= 255; |
---|
| 206 | $g *= 255; |
---|
| 207 | $b *= 255; |
---|
| 208 | $a *= 127; |
---|
| 209 | |
---|
| 210 | // Clip values |
---|
| 211 | $r = $r > 255 ? 255 : $r; |
---|
| 212 | $g = $g > 255 ? 255 : $g; |
---|
| 213 | $b = $b > 255 ? 255 : $b; |
---|
| 214 | $a = $a > 127 ? 127 : $a; |
---|
| 215 | |
---|
| 216 | $r = $r < 0 ? 0 : $r; |
---|
| 217 | $g = $g < 0 ? 0 : $g; |
---|
| 218 | $b = $b < 0 ? 0 : $b; |
---|
| 219 | $a = $a < 0 ? 0 : $a; |
---|
| 220 | |
---|
| 221 | $key = sprintf("#%02X%02X%02X%02X", $r, $g, $b, $a); |
---|
| 222 | |
---|
| 223 | if ( isset($this->_colors[$key]) ) |
---|
| 224 | return $this->_colors[$key]; |
---|
| 225 | |
---|
| 226 | if ( $a != 0 ) |
---|
| 227 | $this->_colors[$key] = imagecolorallocatealpha($this->_img, $r, $g, $b, $a); |
---|
| 228 | else |
---|
| 229 | $this->_colors[$key] = imagecolorallocate($this->_img, $r, $g, $b); |
---|
| 230 | |
---|
| 231 | return $this->_colors[$key]; |
---|
| 232 | |
---|
| 233 | } |
---|
| 234 | |
---|
| 235 | /** |
---|
| 236 | * Draws a line from x1,y1 to x2,y2 |
---|
| 237 | * |
---|
| 238 | * See {@link Style::munge_color()} for the format of the color array. |
---|
| 239 | * See {@link Cpdf::setLineStyle()} for a description of the format of the |
---|
| 240 | * $style parameter (aka dash). |
---|
| 241 | * |
---|
| 242 | * @param float $x1 |
---|
| 243 | * @param float $y1 |
---|
| 244 | * @param float $x2 |
---|
| 245 | * @param float $y2 |
---|
| 246 | * @param array $color |
---|
| 247 | * @param float $width |
---|
| 248 | * @param array $style |
---|
| 249 | */ |
---|
| 250 | function line($x1, $y1, $x2, $y2, $color, $width, $style = null) { |
---|
| 251 | |
---|
| 252 | // Scale by the AA factor |
---|
| 253 | $x1 *= $this->_aa_factor; |
---|
| 254 | $y1 *= $this->_aa_factor; |
---|
| 255 | $x2 *= $this->_aa_factor; |
---|
| 256 | $y2 *= $this->_aa_factor; |
---|
| 257 | $width *= $this->_aa_factor; |
---|
| 258 | |
---|
| 259 | $c = $this->_allocate_color($color); |
---|
| 260 | |
---|
| 261 | // Convert the style array if required |
---|
| 262 | if ( !is_null($style) ) { |
---|
| 263 | $gd_style = array(); |
---|
| 264 | |
---|
| 265 | if ( count($style) == 1 ) { |
---|
| 266 | for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) { |
---|
| 267 | $gd_style[] = $c; |
---|
| 268 | } |
---|
| 269 | |
---|
| 270 | for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) { |
---|
| 271 | $gd_style[] = $this->_bg_color; |
---|
| 272 | } |
---|
| 273 | |
---|
| 274 | } else { |
---|
| 275 | |
---|
| 276 | $i = 0; |
---|
| 277 | foreach ($style as $length) { |
---|
| 278 | |
---|
| 279 | if ( $i % 2 == 0 ) { |
---|
| 280 | // 'On' pattern |
---|
| 281 | for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) |
---|
| 282 | $gd_style[] = $c; |
---|
| 283 | |
---|
| 284 | } else { |
---|
| 285 | // Off pattern |
---|
| 286 | for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) |
---|
| 287 | $gd_style[] = $this->_bg_color; |
---|
| 288 | |
---|
| 289 | } |
---|
| 290 | $i++; |
---|
| 291 | } |
---|
| 292 | } |
---|
| 293 | |
---|
| 294 | imagesetstyle($this->_img, $gd_style); |
---|
| 295 | $c = IMG_COLOR_STYLED; |
---|
| 296 | } |
---|
| 297 | |
---|
| 298 | imagesetthickness($this->_img, $width); |
---|
| 299 | |
---|
| 300 | imageline($this->_img, $x1, $y1, $x2, $y2, $c); |
---|
| 301 | |
---|
| 302 | } |
---|
| 303 | |
---|
| 304 | /** |
---|
| 305 | * Draws a rectangle at x1,y1 with width w and height h |
---|
| 306 | * |
---|
| 307 | * See {@link Style::munge_color()} for the format of the color array. |
---|
| 308 | * See {@link Cpdf::setLineStyle()} for a description of the $style |
---|
| 309 | * parameter (aka dash) |
---|
| 310 | * |
---|
| 311 | * @param float $x1 |
---|
| 312 | * @param float $y1 |
---|
| 313 | * @param float $w |
---|
| 314 | * @param float $h |
---|
| 315 | * @param array $color |
---|
| 316 | * @param float $width |
---|
| 317 | * @param array $style |
---|
| 318 | */ |
---|
| 319 | function rectangle($x1, $y1, $w, $h, $color, $width, $style = null) { |
---|
| 320 | |
---|
| 321 | // Scale by the AA factor |
---|
| 322 | $x1 *= $this->_aa_factor; |
---|
| 323 | $y1 *= $this->_aa_factor; |
---|
| 324 | $w *= $this->_aa_factor; |
---|
| 325 | $h *= $this->_aa_factor; |
---|
| 326 | |
---|
| 327 | $c = $this->_allocate_color($color); |
---|
| 328 | |
---|
| 329 | // Convert the style array if required |
---|
| 330 | if ( !is_null($style) ) { |
---|
| 331 | $gd_style = array(); |
---|
| 332 | |
---|
| 333 | foreach ($style as $length) { |
---|
| 334 | for ($i = 0; $i < $length; $i++) { |
---|
| 335 | $gd_style[] = $c; |
---|
| 336 | } |
---|
| 337 | } |
---|
| 338 | |
---|
| 339 | imagesetstyle($this->_img, $gd_style); |
---|
| 340 | $c = IMG_COLOR_STYLED; |
---|
| 341 | } |
---|
| 342 | |
---|
| 343 | imagesetthickness($this->_img, $width); |
---|
| 344 | |
---|
| 345 | imagerectangle($this->_img, $x1, $y1, $x1 + $w, $y1 + $h, $c); |
---|
| 346 | |
---|
| 347 | } |
---|
| 348 | |
---|
| 349 | /** |
---|
| 350 | * Draws a filled rectangle at x1,y1 with width w and height h |
---|
| 351 | * |
---|
| 352 | * See {@link Style::munge_color()} for the format of the color array. |
---|
| 353 | * |
---|
| 354 | * @param float $x1 |
---|
| 355 | * @param float $y1 |
---|
| 356 | * @param float $w |
---|
| 357 | * @param float $h |
---|
| 358 | * @param array $color |
---|
| 359 | */ |
---|
| 360 | function filled_rectangle($x1, $y1, $w, $h, $color) { |
---|
| 361 | |
---|
| 362 | // Scale by the AA factor |
---|
| 363 | $x1 *= $this->_aa_factor; |
---|
| 364 | $y1 *= $this->_aa_factor; |
---|
| 365 | $w *= $this->_aa_factor; |
---|
| 366 | $h *= $this->_aa_factor; |
---|
| 367 | |
---|
| 368 | $c = $this->_allocate_color($color); |
---|
| 369 | |
---|
| 370 | imagefilledrectangle($this->_img, $x1, $y1, $x1 + $w, $y1 + $h, $c); |
---|
| 371 | |
---|
| 372 | } |
---|
| 373 | |
---|
| 374 | /** |
---|
| 375 | * Draws a polygon |
---|
| 376 | * |
---|
| 377 | * The polygon is formed by joining all the points stored in the $points |
---|
| 378 | * array. $points has the following structure: |
---|
| 379 | * <code> |
---|
| 380 | * array(0 => x1, |
---|
| 381 | * 1 => y1, |
---|
| 382 | * 2 => x2, |
---|
| 383 | * 3 => y2, |
---|
| 384 | * ... |
---|
| 385 | * ); |
---|
| 386 | * </code> |
---|
| 387 | * |
---|
| 388 | * See {@link Style::munge_color()} for the format of the color array. |
---|
| 389 | * See {@link Cpdf::setLineStyle()} for a description of the $style |
---|
| 390 | * parameter (aka dash) |
---|
| 391 | * |
---|
| 392 | * @param array $points |
---|
| 393 | * @param array $color |
---|
| 394 | * @param float $width |
---|
| 395 | * @param array $style |
---|
| 396 | * @param bool $fill Fills the polygon if true |
---|
| 397 | */ |
---|
| 398 | function polygon($points, $color, $width = null, $style = null, $fill = false) { |
---|
| 399 | |
---|
| 400 | // Scale each point by the AA factor |
---|
| 401 | foreach (array_keys($points) as $i) |
---|
| 402 | $points[$i] *= $this->_aa_factor; |
---|
| 403 | |
---|
| 404 | $c = $this->_allocate_color($color); |
---|
| 405 | |
---|
| 406 | // Convert the style array if required |
---|
| 407 | if ( !is_null($style) && !$fill ) { |
---|
| 408 | $gd_style = array(); |
---|
| 409 | |
---|
| 410 | foreach ($style as $length) { |
---|
| 411 | for ($i = 0; $i < $length; $i++) { |
---|
| 412 | $gd_style[] = $c; |
---|
| 413 | } |
---|
| 414 | } |
---|
| 415 | |
---|
| 416 | imagesetstyle($this->_img, $gd_style); |
---|
| 417 | $c = IMG_COLOR_STYLED; |
---|
| 418 | } |
---|
| 419 | |
---|
| 420 | imagesetthickness($this->_img, $width); |
---|
| 421 | |
---|
| 422 | if ( $fill ) |
---|
| 423 | imagefilledpolygon($this->_img, $points, count($points) / 2, $c); |
---|
| 424 | else |
---|
| 425 | imagepolygon($this->_img, $points, count($points) / 2, $c); |
---|
| 426 | |
---|
| 427 | } |
---|
| 428 | |
---|
| 429 | /** |
---|
| 430 | * Draws a circle at $x,$y with radius $r |
---|
| 431 | * |
---|
| 432 | * See {@link Style::munge_color()} for the format of the color array. |
---|
| 433 | * See {@link Cpdf::setLineStyle()} for a description of the $style |
---|
| 434 | * parameter (aka dash) |
---|
| 435 | * |
---|
| 436 | * @param float $x |
---|
| 437 | * @param float $y |
---|
| 438 | * @param float $r |
---|
| 439 | * @param array $color |
---|
| 440 | * @param float $width |
---|
| 441 | * @param array $style |
---|
| 442 | * @param bool $fill Fills the circle if true |
---|
| 443 | */ |
---|
| 444 | function circle($x, $y, $r, $color, $width = null, $style = null, $fill = false) { |
---|
| 445 | |
---|
| 446 | // Scale by the AA factor |
---|
| 447 | $x *= $this->_aa_factor; |
---|
| 448 | $y *= $this->_aa_factor; |
---|
| 449 | $r *= $this->_aa_factor; |
---|
| 450 | |
---|
| 451 | $c = $this->_allocate_color($color); |
---|
| 452 | |
---|
| 453 | // Convert the style array if required |
---|
| 454 | if ( !is_null($style) && !$fill ) { |
---|
| 455 | $gd_style = array(); |
---|
| 456 | |
---|
| 457 | foreach ($style as $length) { |
---|
| 458 | for ($i = 0; $i < $length; $i++) { |
---|
| 459 | $gd_style[] = $c; |
---|
| 460 | } |
---|
| 461 | } |
---|
| 462 | |
---|
| 463 | imagesetstyle($this->_img, $gd_style); |
---|
| 464 | $c = IMG_COLOR_STYLED; |
---|
| 465 | } |
---|
| 466 | |
---|
| 467 | imagesetthickness($this->_img, $width); |
---|
| 468 | |
---|
| 469 | if ( $fill ) |
---|
| 470 | imagefilledellipse($this->_img, $x, $y, $r, $r, $c); |
---|
| 471 | else |
---|
| 472 | imageellipse($this->_img, $x, $y, $r, $r, $c); |
---|
| 473 | |
---|
| 474 | } |
---|
| 475 | |
---|
| 476 | /** |
---|
| 477 | * Add an image to the pdf. |
---|
| 478 | * |
---|
| 479 | * The image is placed at the specified x and y coordinates with the |
---|
| 480 | * given width and height. |
---|
| 481 | * |
---|
| 482 | * @param string $img_url the path to the image |
---|
| 483 | * @param string $img_type the type (e.g. extension) of the image |
---|
| 484 | * @param float $x x position |
---|
| 485 | * @param float $y y position |
---|
| 486 | * @param int $w width (in pixels) |
---|
| 487 | * @param int $h height (in pixels) |
---|
| 488 | */ |
---|
| 489 | function image($img_url, $img_type, $x, $y, $w, $h) { |
---|
| 490 | |
---|
| 491 | switch ($img_type) { |
---|
| 492 | case "png": |
---|
| 493 | $src = @imagecreatefrompng($img_url); |
---|
| 494 | break; |
---|
| 495 | |
---|
| 496 | case "gif": |
---|
| 497 | $src = @imagecreatefromgif($img_url); |
---|
| 498 | break; |
---|
| 499 | |
---|
| 500 | case "jpg": |
---|
| 501 | case "jpeg": |
---|
| 502 | $src = @imagecreatefromjpeg($img_url); |
---|
| 503 | break; |
---|
| 504 | |
---|
| 505 | default: |
---|
| 506 | break; |
---|
| 507 | |
---|
| 508 | } |
---|
| 509 | |
---|
| 510 | if ( !$src ) |
---|
| 511 | return; // Probably should add to $_dompdf_errors or whatever here |
---|
| 512 | |
---|
| 513 | // Scale by the AA factor |
---|
| 514 | $x *= $this->_aa_factor; |
---|
| 515 | $y *= $this->_aa_factor; |
---|
| 516 | |
---|
| 517 | $w *= $this->_aa_factor; |
---|
| 518 | $h *= $this->_aa_factor; |
---|
| 519 | |
---|
| 520 | $img_w = imagesx($src); |
---|
| 521 | $img_h = imagesy($src); |
---|
| 522 | |
---|
| 523 | |
---|
| 524 | imagecopyresampled($this->_img, $src, $x, $y, 0, 0, $w, $h, $img_w, $img_h); |
---|
| 525 | |
---|
| 526 | } |
---|
| 527 | |
---|
| 528 | /** |
---|
| 529 | * Writes text at the specified x and y coordinates |
---|
| 530 | * |
---|
| 531 | * See {@link Style::munge_color()} for the format of the color array. |
---|
| 532 | * |
---|
| 533 | * @param float $x |
---|
| 534 | * @param float $y |
---|
| 535 | * @param string $text the text to write |
---|
| 536 | * @param string $font the font file to use |
---|
| 537 | * @param float $size the font size, in points |
---|
| 538 | * @param array $color |
---|
| 539 | * @param float $adjust word spacing adjustment |
---|
| 540 | * @param float $angle Text angle |
---|
| 541 | */ |
---|
| 542 | function text($x, $y, $text, $font, $size, $color = array(0,0,0), $adjust = 0, $angle = 0) { |
---|
| 543 | |
---|
| 544 | // Scale by the AA factor |
---|
| 545 | $x *= $this->_aa_factor; |
---|
| 546 | $y *= $this->_aa_factor; |
---|
| 547 | $size *= $this->_aa_factor; |
---|
| 548 | |
---|
| 549 | $h = $this->get_font_height($font, $size); |
---|
| 550 | |
---|
| 551 | $c = $this->_allocate_color($color); |
---|
| 552 | |
---|
| 553 | if ( strpos($font, '.ttf') === false ) |
---|
| 554 | $font .= ".ttf"; |
---|
| 555 | |
---|
| 556 | // FIXME: word spacing |
---|
| 557 | imagettftext($this->_img, $size, $angle, $x, $y + $h, $c, $font, $text); |
---|
| 558 | |
---|
| 559 | } |
---|
| 560 | |
---|
| 561 | /** |
---|
| 562 | * Add a named destination (similar to <a name="foo">...</a> in html) |
---|
| 563 | * |
---|
| 564 | * @param string $anchorname The name of the named destination |
---|
| 565 | */ |
---|
| 566 | function add_named_dest($anchorname) { |
---|
| 567 | // Not implemented |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | /** |
---|
| 571 | * Add a link to the pdf |
---|
| 572 | * |
---|
| 573 | * @param string $url The url to link to |
---|
| 574 | * @param float $x The x position of the link |
---|
| 575 | * @param float $y The y position of the link |
---|
| 576 | * @param float $width The width of the link |
---|
| 577 | * @param float $height The height of the link |
---|
| 578 | */ |
---|
| 579 | function add_link($url, $x, $y, $width, $height) { |
---|
| 580 | // Not implemented |
---|
| 581 | } |
---|
| 582 | |
---|
| 583 | /** |
---|
| 584 | * Calculates text size, in points |
---|
| 585 | * |
---|
| 586 | * @param string $text the text to be sized |
---|
| 587 | * @param string $font the desired font |
---|
| 588 | * @param float $size the desired font size |
---|
| 589 | * @param float $spacing word spacing, if any |
---|
| 590 | * @return float |
---|
| 591 | */ |
---|
| 592 | function get_text_width($text, $font, $size, $spacing = 0) { |
---|
| 593 | |
---|
| 594 | if ( strpos($font, '.ttf') === false ) |
---|
| 595 | $font .= ".ttf"; |
---|
| 596 | |
---|
| 597 | // FIXME: word spacing |
---|
| 598 | list($x1,,$x2) = imagettfbbox($size, 0, $font, $text); |
---|
| 599 | return $x2 - $x1; |
---|
| 600 | } |
---|
| 601 | |
---|
| 602 | /** |
---|
| 603 | * Calculates font height, in points |
---|
| 604 | * |
---|
| 605 | * @param string $font |
---|
| 606 | * @param float $size |
---|
| 607 | * @return float |
---|
| 608 | */ |
---|
| 609 | function get_font_height($font, $size) { |
---|
| 610 | if ( strpos($font, '.ttf') === false ) |
---|
| 611 | $font .= ".ttf"; |
---|
| 612 | |
---|
| 613 | // FIXME: word spacing |
---|
| 614 | list(,$y2,,,,$y1) = imagettfbbox($size, 0, $font, "MXjpqytfhl"); // Test string with ascenders, descenders and caps |
---|
| 615 | return $y2 - $y1; |
---|
| 616 | } |
---|
| 617 | |
---|
| 618 | |
---|
| 619 | /** |
---|
| 620 | * Starts a new page |
---|
| 621 | * |
---|
| 622 | * Subsequent drawing operations will appear on the new page. |
---|
| 623 | */ |
---|
| 624 | function new_page() { |
---|
| 625 | // FIXME |
---|
| 626 | } |
---|
| 627 | |
---|
| 628 | /** |
---|
| 629 | * Streams the image directly to the browser |
---|
| 630 | * |
---|
| 631 | * @param string $filename the name of the image file (ignored) |
---|
| 632 | * @param array $options associative array, 'type' => jpeg|jpg|png, 'quality' => 0 - 100 (jpeg only) |
---|
| 633 | */ |
---|
| 634 | function stream($filename, $options = null) { |
---|
| 635 | |
---|
| 636 | // Perform any antialiasing |
---|
| 637 | if ( $this->_aa_factor != 1 ) { |
---|
| 638 | $dst_w = $this->_width / $this->_aa_factor; |
---|
| 639 | $dst_h = $this->_height / $this->_aa_factor; |
---|
| 640 | $dst = imagecreatetruecolor($dst_w, $dst_h); |
---|
| 641 | imagecopyresampled($dst, $this->_img, 0, 0, 0, 0, |
---|
| 642 | $dst_w, $dst_h, |
---|
| 643 | $this->_width, $this->_height); |
---|
| 644 | } else { |
---|
| 645 | $dst = $this->_img; |
---|
| 646 | } |
---|
| 647 | |
---|
| 648 | if ( !isset($options["type"]) ) |
---|
| 649 | $options["type"] = "png"; |
---|
| 650 | |
---|
| 651 | $type = strtolower($options["type"]); |
---|
| 652 | |
---|
| 653 | header("Cache-Control: private"); |
---|
| 654 | |
---|
| 655 | switch ($type) { |
---|
| 656 | |
---|
| 657 | case "jpg": |
---|
| 658 | case "jpeg": |
---|
| 659 | if ( !isset($options["quality"]) ) |
---|
| 660 | $options["quality"] = 75; |
---|
| 661 | |
---|
| 662 | header("Content-type: image/jpeg"); |
---|
| 663 | imagejpeg($dst, '', $options["quality"]); |
---|
| 664 | break; |
---|
| 665 | |
---|
| 666 | case "png": |
---|
| 667 | default: |
---|
| 668 | header("Content-type: image/png"); |
---|
| 669 | imagepng($dst); |
---|
| 670 | break; |
---|
| 671 | } |
---|
| 672 | |
---|
| 673 | if ( $this->_aa_factor != 1 ) |
---|
| 674 | imagedestroy($dst); |
---|
| 675 | } |
---|
| 676 | |
---|
| 677 | /** |
---|
| 678 | * Returns the PNG as a string |
---|
| 679 | * |
---|
| 680 | * @param array $options associative array, 'type' => jpeg|jpg|png, 'quality' => 0 - 100 (jpeg only) |
---|
| 681 | * @return string |
---|
| 682 | */ |
---|
| 683 | function output($options = null) { |
---|
| 684 | |
---|
| 685 | if ( $this->_aa_factor != 1 ) { |
---|
| 686 | $dst_w = $this->_width / $this->_aa_factor; |
---|
| 687 | $dst_h = $this->_height / $this->_aa_factor; |
---|
| 688 | $dst = imagecreatetruecolor($dst_w, $dst_h); |
---|
| 689 | imagecopyresampled($dst, $this->_img, 0, 0, 0, 0, |
---|
| 690 | $dst_w, $dst_h, |
---|
| 691 | $this->_width, $this->_height); |
---|
| 692 | } else { |
---|
| 693 | $dst = $this->_img; |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | if ( !isset($options["type"]) ) |
---|
| 697 | $options["type"] = "png"; |
---|
| 698 | |
---|
| 699 | $type = $options["type"]; |
---|
| 700 | |
---|
| 701 | ob_start(); |
---|
| 702 | |
---|
| 703 | switch ($type) { |
---|
| 704 | |
---|
| 705 | case "jpg": |
---|
| 706 | case "jpeg": |
---|
| 707 | if ( !isset($options["quality"]) ) |
---|
| 708 | $options["quality"] = 75; |
---|
| 709 | |
---|
| 710 | imagejpeg($dst, '', $options["quality"]); |
---|
| 711 | break; |
---|
| 712 | |
---|
| 713 | case "png": |
---|
| 714 | default: |
---|
| 715 | imagepng($dst); |
---|
| 716 | break; |
---|
| 717 | } |
---|
| 718 | |
---|
| 719 | $image = ob_get_contents(); |
---|
| 720 | ob_end_clean(); |
---|
| 721 | |
---|
| 722 | if ( $this->_aa_factor != 1 ) |
---|
| 723 | imagedestroy($dst); |
---|
| 724 | |
---|
| 725 | return $image; |
---|
| 726 | } |
---|
| 727 | |
---|
| 728 | |
---|
| 729 | } |
---|
| 730 | ?> |
---|