cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % GGGG EEEEE OOO M M EEEEE TTTTT RRRR Y Y % |
| 7 | % G E O O MM MM E T R R Y Y % |
| 8 | % G GG EEE O O M M M EEE T RRRR Y % |
| 9 | % G G E O O M M E T R R Y % |
| 10 | % GGGG EEEEE OOO M M EEEEE T R R Y % |
| 11 | % % |
| 12 | % % |
| 13 | % MagickCore Geometry Methods % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % January 2003 % |
| 18 | % % |
| 19 | % % |
cristy | 1454be7 | 2011-12-19 01:52:48 +0000 | [diff] [blame] | 20 | % Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 21 | % dedicated to making software imaging solutions freely available. % |
| 22 | % % |
| 23 | % You may not use this file except in compliance with the License. You may % |
| 24 | % obtain a copy of the License at % |
| 25 | % % |
| 26 | % http://www.imagemagick.org/script/license.php % |
| 27 | % % |
| 28 | % Unless required by applicable law or agreed to in writing, software % |
| 29 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 30 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 31 | % See the License for the specific language governing permissions and % |
| 32 | % limitations under the License. % |
| 33 | % % |
| 34 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 35 | % |
| 36 | % |
| 37 | */ |
| 38 | |
| 39 | /* |
| 40 | Include declarations. |
| 41 | */ |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 42 | #include "MagickCore/studio.h" |
| 43 | #include "MagickCore/constitute.h" |
| 44 | #include "MagickCore/draw.h" |
| 45 | #include "MagickCore/exception.h" |
| 46 | #include "MagickCore/exception-private.h" |
| 47 | #include "MagickCore/geometry.h" |
| 48 | #include "MagickCore/memory_.h" |
| 49 | #include "MagickCore/string_.h" |
| 50 | #include "MagickCore/string-private.h" |
| 51 | #include "MagickCore/token.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 52 | |
| 53 | /* |
| 54 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 55 | % % |
| 56 | % % |
| 57 | % % |
| 58 | % G e t G e o m e t r y % |
| 59 | % % |
| 60 | % % |
| 61 | % % |
| 62 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 63 | % |
| 64 | % GetGeometry() parses a geometry specification and returns the width, |
| 65 | % height, x, and y values. It also returns flags that indicates which |
| 66 | % of the four values (width, height, x, y) were located in the string, and |
| 67 | % whether the x or y values are negative. In addition, there are flags to |
| 68 | % report any meta characters (%, !, <, or >). |
| 69 | % |
| 70 | % The format of the GetGeometry method is: |
| 71 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 72 | % MagickStatusType GetGeometry(const char *geometry,ssize_t *x,ssize_t *y, |
| 73 | % size_t *width,size_t *height) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 74 | % |
| 75 | % A description of each parameter follows: |
| 76 | % |
| 77 | % o geometry: The geometry. |
| 78 | % |
| 79 | % o x,y: The x and y offset as determined by the geometry specification. |
| 80 | % |
| 81 | % o width,height: The width and height as determined by the geometry |
| 82 | % specification. |
| 83 | % |
| 84 | */ |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 85 | MagickExport MagickStatusType GetGeometry(const char *geometry,ssize_t *x, |
| 86 | ssize_t *y,size_t *width,size_t *height) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 87 | { |
| 88 | char |
| 89 | *p, |
| 90 | pedantic_geometry[MaxTextExtent], |
| 91 | *q; |
| 92 | |
cristy | 00976d8 | 2011-02-20 20:31:28 +0000 | [diff] [blame] | 93 | double |
| 94 | value; |
| 95 | |
cristy | f30f47d | 2011-09-06 14:40:59 +0000 | [diff] [blame] | 96 | int |
| 97 | c; |
| 98 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 99 | MagickStatusType |
| 100 | flags; |
| 101 | |
| 102 | /* |
| 103 | Remove whitespace and meta characters from geometry specification. |
| 104 | */ |
| 105 | flags=NoValue; |
| 106 | if ((geometry == (char *) NULL) || (*geometry == '\0')) |
| 107 | return(flags); |
cristy | 37e0b38 | 2011-06-07 13:31:21 +0000 | [diff] [blame] | 108 | if (strlen(geometry) >= (MaxTextExtent-1)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 109 | return(flags); |
| 110 | (void) CopyMagickString(pedantic_geometry,geometry,MaxTextExtent); |
| 111 | for (p=pedantic_geometry; *p != '\0'; ) |
| 112 | { |
| 113 | if (isspace((int) ((unsigned char) *p)) != 0) |
| 114 | { |
| 115 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 116 | continue; |
| 117 | } |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 118 | c=(int) ((unsigned int) *p); |
| 119 | switch (c) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 120 | { |
| 121 | case '%': |
| 122 | { |
| 123 | flags|=PercentValue; |
| 124 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 125 | break; |
| 126 | } |
| 127 | case '!': |
| 128 | { |
| 129 | flags|=AspectValue; |
| 130 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 131 | break; |
| 132 | } |
| 133 | case '<': |
| 134 | { |
| 135 | flags|=LessValue; |
| 136 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 137 | break; |
| 138 | } |
| 139 | case '>': |
| 140 | { |
| 141 | flags|=GreaterValue; |
| 142 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 143 | break; |
| 144 | } |
| 145 | case '^': |
| 146 | { |
| 147 | flags|=MinimumValue; |
| 148 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 149 | break; |
| 150 | } |
| 151 | case '@': |
| 152 | { |
| 153 | flags|=AreaValue; |
| 154 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 155 | break; |
| 156 | } |
| 157 | case '(': |
| 158 | case ')': |
| 159 | { |
| 160 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 161 | break; |
| 162 | } |
| 163 | case '-': |
| 164 | case '.': |
| 165 | case ',': |
| 166 | case '+': |
| 167 | case '0': |
| 168 | case '1': |
| 169 | case '2': |
| 170 | case '3': |
| 171 | case '4': |
| 172 | case '5': |
| 173 | case '6': |
| 174 | case '7': |
| 175 | case '8': |
| 176 | case '9': |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 177 | case 'x': |
| 178 | case 'X': |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 179 | case 215: |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 180 | { |
| 181 | p++; |
| 182 | break; |
| 183 | } |
| 184 | default: |
| 185 | return(flags); |
| 186 | } |
| 187 | } |
| 188 | /* |
| 189 | Parse width, height, x, and y. |
| 190 | */ |
| 191 | p=pedantic_geometry; |
| 192 | if (*p == '\0') |
| 193 | return(flags); |
| 194 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 195 | value=StringToDouble(p,&q); |
cristy | 00976d8 | 2011-02-20 20:31:28 +0000 | [diff] [blame] | 196 | (void) value; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 197 | if (LocaleNCompare(p,"0x",2) == 0) |
cristy | f53f26f | 2011-05-16 00:56:05 +0000 | [diff] [blame] | 198 | value=(double) strtol(p,&q,10); |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 199 | c=(int) ((unsigned char) *q); |
| 200 | if ((c == 215) || (*q == 'x') || (*q == 'X') || (*q == '\0')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 201 | { |
| 202 | /* |
| 203 | Parse width. |
| 204 | */ |
| 205 | q=p; |
| 206 | if (LocaleNCompare(p,"0x",2) == 0) |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 207 | *width=(size_t) strtol(p,&p,10); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 208 | else |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 209 | *width=(size_t) floor(StringToDouble(p,&p)+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 210 | if (p != q) |
| 211 | flags|=WidthValue; |
| 212 | } |
cristy | f30f47d | 2011-09-06 14:40:59 +0000 | [diff] [blame] | 213 | c=(*p); |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 214 | c=(int) ((unsigned char) *p); |
| 215 | if ((c == 215) || (*p == 'x') || (*p == 'X')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 216 | { |
| 217 | p++; |
| 218 | if ((*p != '+') && (*p != '-')) |
| 219 | { |
| 220 | /* |
| 221 | Parse height. |
| 222 | */ |
| 223 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 224 | *height=(size_t) floor(StringToDouble(p,&p)+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 225 | if (p != q) |
| 226 | flags|=HeightValue; |
| 227 | } |
| 228 | } |
| 229 | if ((*p == '+') || (*p == '-')) |
| 230 | { |
| 231 | /* |
| 232 | Parse x value. |
| 233 | */ |
| 234 | if (*p == '-') |
| 235 | flags|=XNegative; |
| 236 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 237 | *x=(ssize_t) ceil(StringToDouble(p,&p)-0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 238 | if (p != q) |
| 239 | flags|=XValue; |
| 240 | if ((*p == '+') || (*p == '-')) |
| 241 | { |
| 242 | /* |
| 243 | Parse y value. |
| 244 | */ |
| 245 | if (*p == '-') |
| 246 | flags|=YNegative; |
| 247 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 248 | *y=(ssize_t) ceil(StringToDouble(p,&p)-0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 249 | if (p != q) |
| 250 | flags|=YValue; |
| 251 | } |
| 252 | } |
| 253 | return(flags); |
| 254 | } |
| 255 | |
| 256 | /* |
| 257 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 258 | % % |
| 259 | % % |
| 260 | % % |
| 261 | % G e t P a g e G e o m e t r y % |
| 262 | % % |
| 263 | % % |
| 264 | % % |
| 265 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 266 | % |
| 267 | % GetPageGeometry() replaces any page mneumonic with the equivalent size in |
| 268 | % picas. |
| 269 | % |
| 270 | % The format of the GetPageGeometry method is: |
| 271 | % |
| 272 | % char *GetPageGeometry(const char *page_geometry) |
| 273 | % |
| 274 | % A description of each parameter follows. |
| 275 | % |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 276 | % o page_geometry: Specifies a pointer to an array of characters. The |
| 277 | % string is either a Postscript page name (e.g. A4) or a postscript page |
| 278 | % geometry (e.g. 612x792+36+36). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 279 | % |
| 280 | */ |
| 281 | MagickExport char *GetPageGeometry(const char *page_geometry) |
| 282 | { |
| 283 | static const char |
| 284 | *PageSizes[][2]= |
| 285 | { |
| 286 | { "4x6", "288x432" }, |
| 287 | { "5x7", "360x504" }, |
| 288 | { "7x9", "504x648" }, |
| 289 | { "8x10", "576x720" }, |
| 290 | { "9x11", "648x792" }, |
| 291 | { "9x12", "648x864" }, |
| 292 | { "10x13", "720x936" }, |
| 293 | { "10x14", "720x1008" }, |
| 294 | { "11x17", "792x1224" }, |
| 295 | { "a0", "2384x3370" }, |
| 296 | { "a1", "1684x2384" }, |
| 297 | { "a10", "73x105" }, |
| 298 | { "a2", "1191x1684" }, |
| 299 | { "a3", "842x1191" }, |
| 300 | { "a4", "595x842" }, |
| 301 | { "a4smaLL", "595x842" }, |
| 302 | { "a5", "420x595" }, |
| 303 | { "a6", "297x420" }, |
| 304 | { "a7", "210x297" }, |
| 305 | { "a8", "148x210" }, |
| 306 | { "a9", "105x148" }, |
| 307 | { "archa", "648x864" }, |
| 308 | { "archb", "864x1296" }, |
| 309 | { "archC", "1296x1728" }, |
| 310 | { "archd", "1728x2592" }, |
| 311 | { "arche", "2592x3456" }, |
| 312 | { "b0", "2920x4127" }, |
| 313 | { "b1", "2064x2920" }, |
| 314 | { "b10", "91x127" }, |
| 315 | { "b2", "1460x2064" }, |
| 316 | { "b3", "1032x1460" }, |
| 317 | { "b4", "729x1032" }, |
| 318 | { "b5", "516x729" }, |
| 319 | { "b6", "363x516" }, |
| 320 | { "b7", "258x363" }, |
| 321 | { "b8", "181x258" }, |
| 322 | { "b9", "127x181" }, |
| 323 | { "c0", "2599x3676" }, |
| 324 | { "c1", "1837x2599" }, |
| 325 | { "c2", "1298x1837" }, |
| 326 | { "c3", "918x1296" }, |
| 327 | { "c4", "649x918" }, |
| 328 | { "c5", "459x649" }, |
| 329 | { "c6", "323x459" }, |
| 330 | { "c7", "230x323" }, |
| 331 | { "executive", "540x720" }, |
| 332 | { "flsa", "612x936" }, |
| 333 | { "flse", "612x936" }, |
| 334 | { "folio", "612x936" }, |
| 335 | { "halfletter", "396x612" }, |
| 336 | { "isob0", "2835x4008" }, |
| 337 | { "isob1", "2004x2835" }, |
| 338 | { "isob10", "88x125" }, |
| 339 | { "isob2", "1417x2004" }, |
| 340 | { "isob3", "1001x1417" }, |
| 341 | { "isob4", "709x1001" }, |
| 342 | { "isob5", "499x709" }, |
| 343 | { "isob6", "354x499" }, |
| 344 | { "isob7", "249x354" }, |
| 345 | { "isob8", "176x249" }, |
| 346 | { "isob9", "125x176" }, |
| 347 | { "jisb0", "1030x1456" }, |
| 348 | { "jisb1", "728x1030" }, |
| 349 | { "jisb2", "515x728" }, |
| 350 | { "jisb3", "364x515" }, |
| 351 | { "jisb4", "257x364" }, |
| 352 | { "jisb5", "182x257" }, |
| 353 | { "jisb6", "128x182" }, |
| 354 | { "ledger", "1224x792" }, |
| 355 | { "legal", "612x1008" }, |
| 356 | { "letter", "612x792" }, |
| 357 | { "lettersmaLL", "612x792" }, |
| 358 | { "quarto", "610x780" }, |
| 359 | { "statement", "396x612" }, |
| 360 | { "tabloid", "792x1224" }, |
| 361 | { (char *) NULL, (char *) NULL } |
| 362 | }; |
| 363 | |
| 364 | char |
| 365 | *page; |
| 366 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 367 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 368 | i; |
| 369 | |
| 370 | assert(page_geometry != (char *) NULL); |
| 371 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",page_geometry); |
| 372 | page=AcquireString(page_geometry); |
| 373 | for (i=0; *PageSizes[i] != (char *) NULL; i++) |
| 374 | if (LocaleNCompare(PageSizes[i][0],page,strlen(PageSizes[i][0])) == 0) |
| 375 | { |
| 376 | RectangleInfo |
| 377 | geometry; |
| 378 | |
| 379 | MagickStatusType |
| 380 | flags; |
| 381 | |
| 382 | /* |
| 383 | Replace mneumonic with the equivalent size in dots-per-inch. |
| 384 | */ |
| 385 | (void) CopyMagickString(page,PageSizes[i][1],MaxTextExtent); |
| 386 | (void) ConcatenateMagickString(page,page_geometry+ |
| 387 | strlen(PageSizes[i][0]),MaxTextExtent); |
| 388 | flags=GetGeometry(page,&geometry.x,&geometry.y,&geometry.width, |
| 389 | &geometry.height); |
| 390 | if ((flags & GreaterValue) == 0) |
| 391 | (void) ConcatenateMagickString(page,">",MaxTextExtent); |
| 392 | break; |
| 393 | } |
| 394 | return(page); |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 399 | % % |
| 400 | % % |
| 401 | % % |
| 402 | % G r a v i t y A d j u s t G e o m e t r y % |
| 403 | % % |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 404 | % % % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 405 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 406 | % |
| 407 | % GravityAdjustGeometry() adjusts the offset of a region with regard to the |
| 408 | % given: width, height and gravity; against which it is positioned. |
| 409 | % |
| 410 | % The region should also have an appropriate width and height to correctly |
| 411 | % set the right offset of the top left corner of the region. |
| 412 | % |
| 413 | % The format of the GravityAdjustGeometry method is: |
| 414 | % |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 415 | % void GravityAdjustGeometry(const size_t width, const size_t height, |
| 416 | % const GravityType gravity,RectangleInfo *region); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 417 | % |
| 418 | % A description of each parameter follows: |
| 419 | % |
| 420 | % o width, height: the larger area the region is relative to |
| 421 | % |
| 422 | % o gravity: the edge/corner the current offset is relative to |
| 423 | % |
| 424 | % o region: The region requiring a offset adjustment relative to gravity |
| 425 | % |
| 426 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 427 | MagickExport void GravityAdjustGeometry(const size_t width, |
| 428 | const size_t height,const GravityType gravity,RectangleInfo *region) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 429 | { |
| 430 | if (region->height == 0) |
| 431 | region->height=height; |
| 432 | if (region->width == 0) |
| 433 | region->width=width; |
| 434 | switch (gravity) |
| 435 | { |
| 436 | case NorthEastGravity: |
| 437 | case EastGravity: |
| 438 | case SouthEastGravity: |
| 439 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 440 | region->x=(ssize_t) (width-region->width-region->x); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 441 | break; |
| 442 | } |
| 443 | case NorthGravity: |
| 444 | case SouthGravity: |
| 445 | case CenterGravity: |
| 446 | case StaticGravity: |
| 447 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 448 | region->x+=(ssize_t) (width/2-region->width/2); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 449 | break; |
| 450 | } |
| 451 | case ForgetGravity: |
| 452 | case NorthWestGravity: |
| 453 | case WestGravity: |
| 454 | case SouthWestGravity: |
| 455 | default: |
| 456 | break; |
| 457 | } |
| 458 | switch (gravity) |
| 459 | { |
| 460 | case SouthWestGravity: |
| 461 | case SouthGravity: |
| 462 | case SouthEastGravity: |
| 463 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 464 | region->y=(ssize_t) (height-region->height-region->y); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 465 | break; |
| 466 | } |
| 467 | case EastGravity: |
| 468 | case WestGravity: |
| 469 | case CenterGravity: |
| 470 | case StaticGravity: |
| 471 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 472 | region->y+=(ssize_t) (height/2-region->height/2); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 473 | break; |
| 474 | } |
| 475 | case ForgetGravity: |
| 476 | case NorthWestGravity: |
| 477 | case NorthGravity: |
| 478 | case NorthEastGravity: |
| 479 | default: |
| 480 | break; |
| 481 | } |
| 482 | return; |
| 483 | } |
| 484 | |
| 485 | /* |
| 486 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 487 | % % |
| 488 | % % |
| 489 | % % |
| 490 | + I s G e o m e t r y % |
| 491 | % % |
| 492 | % % |
| 493 | % % |
| 494 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 495 | % |
| 496 | % IsGeometry() returns MagickTrue if the geometry specification is valid. |
| 497 | % Examples are 100, 100x200, x200, 100x200+10+20, +10+20, 200%, 200x200!, etc. |
| 498 | % |
| 499 | % The format of the IsGeometry method is: |
| 500 | % |
| 501 | % MagickBooleanType IsGeometry(const char *geometry) |
| 502 | % |
| 503 | % A description of each parameter follows: |
| 504 | % |
| 505 | % o geometry: This string is the geometry specification. |
| 506 | % |
| 507 | */ |
| 508 | MagickExport MagickBooleanType IsGeometry(const char *geometry) |
| 509 | { |
| 510 | GeometryInfo |
| 511 | geometry_info; |
| 512 | |
| 513 | MagickStatusType |
| 514 | flags; |
| 515 | |
| 516 | if (geometry == (const char *) NULL) |
| 517 | return(MagickFalse); |
| 518 | flags=ParseGeometry(geometry,&geometry_info); |
| 519 | if (flags == NoValue) |
| 520 | flags=ParseGeometry(geometry+1,&geometry_info); /* i.e. +-4+-4 */ |
| 521 | return(flags != NoValue ? MagickTrue : MagickFalse); |
| 522 | } |
| 523 | |
| 524 | /* |
| 525 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 526 | % % |
| 527 | % % |
| 528 | % % |
| 529 | + I s S c e n e G e o m e t r y % |
| 530 | % % |
| 531 | % % |
| 532 | % % |
| 533 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 534 | % |
| 535 | % IsSceneGeometry() returns MagickTrue if the geometry is a valid scene |
| 536 | % specification (e.g. [1], [1-9], [1,7,4]). |
| 537 | % |
| 538 | % The format of the IsSceneGeometry method is: |
| 539 | % |
| 540 | % MagickBooleanType IsSceneGeometry(const char *geometry, |
| 541 | % const MagickBooleanType pedantic) |
| 542 | % |
| 543 | % A description of each parameter follows: |
| 544 | % |
| 545 | % o geometry: This string is the geometry specification. |
| 546 | % |
| 547 | % o pedantic: A value other than 0 invokes a more restrictive set of |
| 548 | % conditions for a valid specification (e.g. [1], [1-4], [4-1]). |
| 549 | % |
| 550 | */ |
| 551 | MagickExport MagickBooleanType IsSceneGeometry(const char *geometry, |
| 552 | const MagickBooleanType pedantic) |
| 553 | { |
| 554 | char |
| 555 | *p; |
| 556 | |
cristy | 00976d8 | 2011-02-20 20:31:28 +0000 | [diff] [blame] | 557 | double |
| 558 | value; |
| 559 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 560 | if (geometry == (const char *) NULL) |
| 561 | return(MagickFalse); |
| 562 | p=(char *) geometry; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 563 | value=StringToDouble(geometry,&p); |
cristy | 00976d8 | 2011-02-20 20:31:28 +0000 | [diff] [blame] | 564 | (void) value; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 565 | if (p == geometry) |
| 566 | return(MagickFalse); |
| 567 | if (strspn(geometry,"0123456789-, ") != strlen(geometry)) |
| 568 | return(MagickFalse); |
| 569 | if ((pedantic != MagickFalse) && (strchr(geometry,',') != (char *) NULL)) |
| 570 | return(MagickFalse); |
| 571 | return(MagickTrue); |
| 572 | } |
| 573 | |
| 574 | /* |
| 575 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 576 | % % |
| 577 | % % |
| 578 | % % |
| 579 | % P a r s e A b s o l u t e G e o m e t r y % |
| 580 | % % |
| 581 | % % |
| 582 | % % |
| 583 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 584 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 585 | % ParseAbsoluteGeometry() returns a region as defined by the geometry string, |
| 586 | % without any modification by percentages or gravity. |
| 587 | % |
| 588 | % It currently just a wrapper around GetGeometry(), but may be expanded in |
| 589 | % the future to handle other positioning information. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 590 | % |
| 591 | % The format of the ParseAbsoluteGeometry method is: |
| 592 | % |
| 593 | % MagickStatusType ParseAbsoluteGeometry(const char *geometry, |
| 594 | % RectangleInfo *region_info) |
| 595 | % |
| 596 | % A description of each parameter follows: |
| 597 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 598 | % o geometry: The geometry string (e.g. "100x100+10+10"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 599 | % |
| 600 | % o region_info: the region as defined by the geometry string. |
| 601 | % |
| 602 | */ |
| 603 | MagickExport MagickStatusType ParseAbsoluteGeometry(const char *geometry, |
| 604 | RectangleInfo *region_info) |
| 605 | { |
| 606 | MagickStatusType |
| 607 | flags; |
| 608 | |
| 609 | flags=GetGeometry(geometry,®ion_info->x,®ion_info->y, |
| 610 | ®ion_info->width,®ion_info->height); |
| 611 | return(flags); |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 616 | % % |
| 617 | % % |
| 618 | % % |
| 619 | % P a r s e A f f i n e G e o m e t r y % |
| 620 | % % |
| 621 | % % |
| 622 | % % |
| 623 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 624 | % |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 625 | % ParseAffineGeometry() returns an affine matrix as defined by a string of 4 |
| 626 | % to 6 comma/space separated floating point values. |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 627 | % |
| 628 | % The affine matrix determinant is checked for validity of the values. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 629 | % |
| 630 | % The format of the ParseAffineGeometry method is: |
| 631 | % |
| 632 | % MagickStatusType ParseAffineGeometry(const char *geometry, |
| 633 | % AffineMatrix *affine_matrix,ExceptionInfo *exception) |
| 634 | % |
| 635 | % A description of each parameter follows: |
| 636 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 637 | % o geometry: The geometry string (e.g. "1.0,0.0,0.0,1.0,3.2,1.2"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 638 | % |
| 639 | % o affine_matrix: the affine matrix as defined by the geometry string. |
| 640 | % |
| 641 | % o exception: return any errors or warnings in this structure. |
| 642 | % |
| 643 | */ |
| 644 | MagickExport MagickStatusType ParseAffineGeometry(const char *geometry, |
| 645 | AffineMatrix *affine_matrix,ExceptionInfo *exception) |
| 646 | { |
| 647 | char |
| 648 | token[MaxTextExtent]; |
| 649 | |
| 650 | const char |
| 651 | *p; |
| 652 | |
| 653 | double |
| 654 | determinant; |
| 655 | |
| 656 | MagickStatusType |
| 657 | flags; |
| 658 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 659 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 660 | i; |
| 661 | |
| 662 | GetAffineMatrix(affine_matrix); |
| 663 | flags=NoValue; |
| 664 | p=(char *) geometry; |
| 665 | for (i=0; (*p != '\0') && (i < 6); i++) |
| 666 | { |
| 667 | GetMagickToken(p,&p,token); |
| 668 | if (*token == ',') |
| 669 | GetMagickToken(p,&p,token); |
| 670 | switch (i) |
| 671 | { |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 672 | case 0: |
| 673 | { |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 674 | affine_matrix->sx=StringToDouble(token,(char **) NULL); |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 675 | break; |
| 676 | } |
| 677 | case 1: |
| 678 | { |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 679 | affine_matrix->rx=StringToDouble(token,(char **) NULL); |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 680 | break; |
| 681 | } |
| 682 | case 2: |
| 683 | { |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 684 | affine_matrix->ry=StringToDouble(token,(char **) NULL); |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 685 | break; |
| 686 | } |
| 687 | case 3: |
| 688 | { |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 689 | affine_matrix->sy=StringToDouble(token,(char **) NULL); |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 690 | break; |
| 691 | } |
| 692 | case 4: |
| 693 | { |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 694 | affine_matrix->tx=StringToDouble(token,(char **) NULL); |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 695 | flags|=XValue; |
| 696 | break; |
| 697 | } |
| 698 | case 5: |
| 699 | { |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 700 | affine_matrix->ty=StringToDouble(token,(char **) NULL); |
cristy | c1acd84 | 2011-05-19 23:05:47 +0000 | [diff] [blame] | 701 | flags|=YValue; |
| 702 | break; |
| 703 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 704 | } |
| 705 | } |
| 706 | determinant=(affine_matrix->sx*affine_matrix->sy-affine_matrix->rx* |
| 707 | affine_matrix->ry); |
| 708 | if (fabs(determinant) < MagickEpsilon) |
| 709 | (void) ThrowMagickException(exception,GetMagickModule(),OptionError, |
| 710 | "InvalidGeometry","`%s'",geometry); |
| 711 | return(flags); |
| 712 | } |
| 713 | |
| 714 | /* |
| 715 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 716 | % % |
| 717 | % % |
| 718 | % % |
| 719 | % P a r s e G e o m e t r y % |
| 720 | % % |
| 721 | % % |
| 722 | % % |
| 723 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 724 | % |
| 725 | % ParseGeometry() parses a geometry specification and returns the sigma, |
| 726 | % rho, xi, and psi values. It also returns flags that indicates which |
| 727 | % of the four values (sigma, rho, xi, psi) were located in the string, and |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 728 | % whether the xi or pi values are negative. |
| 729 | % |
| 730 | % In addition, it reports if there are any of meta characters (%, !, <, >, @, |
| 731 | % and ^) flags present. It does not report the location of the percentage |
| 732 | % relative to the values. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 733 | % |
| 734 | % The format of the ParseGeometry method is: |
| 735 | % |
| 736 | % MagickStatusType ParseGeometry(const char *geometry, |
| 737 | % GeometryInfo *geometry_info) |
| 738 | % |
| 739 | % A description of each parameter follows: |
| 740 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 741 | % o geometry: The geometry string (e.g. "100x100+10+10"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 742 | % |
| 743 | % o geometry_info: returns the parsed width/height/x/y in this structure. |
| 744 | % |
| 745 | */ |
| 746 | MagickExport MagickStatusType ParseGeometry(const char *geometry, |
| 747 | GeometryInfo *geometry_info) |
| 748 | { |
| 749 | char |
| 750 | *p, |
| 751 | pedantic_geometry[MaxTextExtent], |
| 752 | *q; |
| 753 | |
| 754 | double |
| 755 | value; |
| 756 | |
cristy | f30f47d | 2011-09-06 14:40:59 +0000 | [diff] [blame] | 757 | int |
| 758 | c; |
| 759 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 760 | MagickStatusType |
| 761 | flags; |
| 762 | |
| 763 | /* |
| 764 | Remove whitespaces meta characters from geometry specification. |
| 765 | */ |
| 766 | assert(geometry_info != (GeometryInfo *) NULL); |
| 767 | flags=NoValue; |
| 768 | if ((geometry == (char *) NULL) || (*geometry == '\0')) |
| 769 | return(flags); |
cristy | 37e0b38 | 2011-06-07 13:31:21 +0000 | [diff] [blame] | 770 | if (strlen(geometry) >= (MaxTextExtent-1)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 771 | return(flags); |
| 772 | (void) CopyMagickString(pedantic_geometry,geometry,MaxTextExtent); |
| 773 | for (p=pedantic_geometry; *p != '\0'; ) |
| 774 | { |
| 775 | if (isspace((int) ((unsigned char) *p)) != 0) |
| 776 | { |
| 777 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 778 | continue; |
| 779 | } |
cristy | 35abcb7 | 2011-09-06 20:36:15 +0000 | [diff] [blame] | 780 | c=(int) ((unsigned char) *p); |
| 781 | switch (c) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 782 | { |
| 783 | case '%': |
| 784 | { |
| 785 | flags|=PercentValue; |
| 786 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 787 | break; |
| 788 | } |
| 789 | case '!': |
| 790 | { |
| 791 | flags|=AspectValue; |
| 792 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 793 | break; |
| 794 | } |
| 795 | case '<': |
| 796 | { |
| 797 | flags|=LessValue; |
| 798 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 799 | break; |
| 800 | } |
| 801 | case '>': |
| 802 | { |
| 803 | flags|=GreaterValue; |
| 804 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 805 | break; |
| 806 | } |
| 807 | case '^': |
| 808 | { |
| 809 | flags|=MinimumValue; |
| 810 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 811 | break; |
| 812 | } |
| 813 | case '@': |
| 814 | { |
| 815 | flags|=AreaValue; |
| 816 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 817 | break; |
| 818 | } |
| 819 | case '(': |
| 820 | case ')': |
| 821 | { |
| 822 | (void) CopyMagickString(p,p+1,MaxTextExtent); |
| 823 | break; |
| 824 | } |
| 825 | case '-': |
| 826 | case '+': |
| 827 | case ',': |
| 828 | case '0': |
| 829 | case '1': |
| 830 | case '2': |
| 831 | case '3': |
| 832 | case '4': |
| 833 | case '5': |
| 834 | case '6': |
| 835 | case '7': |
| 836 | case '8': |
| 837 | case '9': |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 838 | case 'x': |
| 839 | case 'X': |
| 840 | case '/': |
| 841 | case ':': |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 842 | case 215: |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 843 | { |
| 844 | p++; |
| 845 | break; |
| 846 | } |
| 847 | case '.': |
| 848 | { |
| 849 | p++; |
| 850 | flags|=DecimalValue; |
| 851 | break; |
| 852 | } |
| 853 | default: |
| 854 | return(flags); |
| 855 | } |
| 856 | } |
| 857 | /* |
| 858 | Parse rho, sigma, xi, psi, and optionally chi. |
| 859 | */ |
| 860 | p=pedantic_geometry; |
| 861 | if (*p == '\0') |
| 862 | return(flags); |
| 863 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 864 | value=StringToDouble(p,&q); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 865 | if (LocaleNCompare(p,"0x",2) == 0) |
| 866 | value=(double) strtol(p,&q,10); |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 867 | c=(int) ((unsigned char) *q); |
| 868 | if ((c == 215) || (*q == 'x') || (*q == 'X') || (*q == ',') || |
anthony | d130350 | 2010-05-11 12:00:43 +0000 | [diff] [blame] | 869 | (*q == '/') || (*q == ':') || (*q =='\0')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 870 | { |
| 871 | /* |
| 872 | Parse rho. |
| 873 | */ |
| 874 | q=p; |
| 875 | if (LocaleNCompare(p,"0x",2) == 0) |
| 876 | value=(double) strtol(p,&p,10); |
| 877 | else |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 878 | value=StringToDouble(p,&p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 879 | if (p != q) |
| 880 | { |
| 881 | flags|=RhoValue; |
| 882 | geometry_info->rho=value; |
| 883 | } |
| 884 | } |
| 885 | q=p; |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 886 | c=(int) ((unsigned char) *p); |
| 887 | if ((c == 215) || (*p == 'x') || (*p == 'X') || (*p == ',') || (*p == '/') || |
cristy | f30f47d | 2011-09-06 14:40:59 +0000 | [diff] [blame] | 888 | (*p == ':')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 889 | { |
| 890 | /* |
| 891 | Parse sigma. |
| 892 | */ |
| 893 | p++; |
| 894 | while (isspace((int) ((unsigned char) *p)) != 0) |
| 895 | p++; |
cristy | 35f75ac | 2011-09-06 20:33:35 +0000 | [diff] [blame] | 896 | c=(int) ((unsigned char) *q); |
| 897 | if (((c != 215) && (*q != 'x') && (*q != 'X')) || ((*p != '+') && |
cristy | f30f47d | 2011-09-06 14:40:59 +0000 | [diff] [blame] | 898 | (*p != '-'))) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 899 | { |
| 900 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 901 | value=StringToDouble(p,&p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 902 | if (p != q) |
| 903 | { |
| 904 | flags|=SigmaValue; |
| 905 | geometry_info->sigma=value; |
| 906 | } |
| 907 | } |
| 908 | } |
| 909 | while (isspace((int) ((unsigned char) *p)) != 0) |
| 910 | p++; |
anthony | d130350 | 2010-05-11 12:00:43 +0000 | [diff] [blame] | 911 | if ((*p == '+') || (*p == '-') || (*p == ',') || (*p == '/') || (*p == ':')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 912 | { |
| 913 | /* |
| 914 | Parse xi value. |
| 915 | */ |
anthony | d130350 | 2010-05-11 12:00:43 +0000 | [diff] [blame] | 916 | if ((*p == ',') || (*p == '/') || (*p == ':')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 917 | p++; |
| 918 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 919 | value=StringToDouble(p,&p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 920 | if (p != q) |
| 921 | { |
| 922 | flags|=XiValue; |
| 923 | if (*q == '-') |
| 924 | flags|=XiNegative; |
| 925 | geometry_info->xi=value; |
| 926 | } |
| 927 | while (isspace((int) ((unsigned char) *p)) != 0) |
| 928 | p++; |
| 929 | if ((*p == '+') || (*p == '-') || (*p == ',') || (*p == '/') || |
anthony | d130350 | 2010-05-11 12:00:43 +0000 | [diff] [blame] | 930 | (*p == ':')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 931 | { |
| 932 | /* |
| 933 | Parse psi value. |
| 934 | */ |
anthony | d130350 | 2010-05-11 12:00:43 +0000 | [diff] [blame] | 935 | if ((*p == ',') || (*p == '/') || (*p == ':')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 936 | p++; |
| 937 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 938 | value=StringToDouble(p,&p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 939 | if (p != q) |
| 940 | { |
| 941 | flags|=PsiValue; |
| 942 | if (*q == '-') |
| 943 | flags|=PsiNegative; |
| 944 | geometry_info->psi=value; |
| 945 | } |
| 946 | } |
| 947 | while (isspace((int) ((unsigned char) *p)) != 0) |
| 948 | p++; |
| 949 | if ((*p == '+') || (*p == '-') || (*p == ',') || (*p == '/') || |
anthony | d130350 | 2010-05-11 12:00:43 +0000 | [diff] [blame] | 950 | (*p == ':')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 951 | { |
| 952 | /* |
| 953 | Parse chi value. |
| 954 | */ |
| 955 | if ((*p == ',') || (*p == '/') || (*p == ':')) |
| 956 | p++; |
| 957 | q=p; |
cristy | dbdd0e3 | 2011-11-04 23:29:40 +0000 | [diff] [blame] | 958 | value=StringToDouble(p,&p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 959 | if (p != q) |
| 960 | { |
| 961 | flags|=ChiValue; |
| 962 | if (*q == '-') |
| 963 | flags|=ChiNegative; |
| 964 | geometry_info->chi=value; |
| 965 | } |
| 966 | } |
| 967 | } |
| 968 | if (strchr(pedantic_geometry,':') != (char *) NULL) |
| 969 | { |
| 970 | /* |
| 971 | Normalize sampling factor (e.g. 4:2:2 => 2x1). |
| 972 | */ |
| 973 | geometry_info->rho/=geometry_info->sigma; |
| 974 | geometry_info->sigma=1.0; |
| 975 | if (geometry_info->xi == 0.0) |
| 976 | geometry_info->sigma=2.0; |
| 977 | } |
| 978 | if (((flags & SigmaValue) == 0) && ((flags & XiValue) != 0) && |
| 979 | ((flags & PsiValue) == 0)) |
| 980 | { |
| 981 | /* |
| 982 | Support negative height values (e.g. 30x-20). |
| 983 | */ |
| 984 | geometry_info->sigma=geometry_info->xi; |
| 985 | geometry_info->xi=0.0; |
| 986 | flags|=SigmaValue; |
| 987 | flags&=(~XiValue); |
| 988 | } |
| 989 | return(flags); |
| 990 | } |
| 991 | |
| 992 | /* |
| 993 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 994 | % % |
| 995 | % % |
| 996 | % % |
| 997 | % P a r s e G r a v i t y G e o m e t r y % |
| 998 | % % |
| 999 | % % |
| 1000 | % % |
| 1001 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1002 | % |
| 1003 | % ParseGravityGeometry() returns a region as defined by the geometry string |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1004 | % with respect to the given image page (canvas) dimensions and the images |
| 1005 | % gravity setting. |
| 1006 | % |
| 1007 | % This is typically used for specifing a area within a given image for |
| 1008 | % cropping images to a smaller size, chopping out rows and or columns, or |
| 1009 | % resizing and positioning overlay images. |
| 1010 | % |
| 1011 | % Percentages are relative to image size and not page size, and are set to |
| 1012 | % nearest integer (pixel) size. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1013 | % |
| 1014 | % The format of the ParseGravityGeometry method is: |
| 1015 | % |
| 1016 | % MagickStatusType ParseGravityGeometry(Image *image,const char *geometry, |
| 1017 | % RectangeInfo *region_info,ExceptionInfo *exception) |
| 1018 | % |
| 1019 | % A description of each parameter follows: |
| 1020 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1021 | % o geometry: The geometry string (e.g. "100x100+10+10"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1022 | % |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 1023 | % o region_info: the region as defined by the geometry string with respect |
| 1024 | % to the image dimensions and its gravity. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1025 | % |
| 1026 | % o exception: return any errors or warnings in this structure. |
| 1027 | % |
| 1028 | */ |
| 1029 | MagickExport MagickStatusType ParseGravityGeometry(const Image *image, |
| 1030 | const char *geometry,RectangleInfo *region_info,ExceptionInfo *exception) |
| 1031 | { |
| 1032 | MagickStatusType |
| 1033 | flags; |
| 1034 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1035 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1036 | height, |
| 1037 | width; |
| 1038 | |
| 1039 | SetGeometry(image,region_info); |
| 1040 | if (image->page.width != 0) |
| 1041 | region_info->width=image->page.width; |
| 1042 | if (image->page.height != 0) |
| 1043 | region_info->height=image->page.height; |
| 1044 | flags=ParseAbsoluteGeometry(geometry,region_info); |
| 1045 | if (flags == NoValue) |
| 1046 | { |
| 1047 | (void) ThrowMagickException(exception,GetMagickModule(),OptionError, |
| 1048 | "InvalidGeometry","`%s'",geometry); |
| 1049 | return(flags); |
| 1050 | } |
| 1051 | if ((flags & PercentValue) != 0) |
| 1052 | { |
| 1053 | GeometryInfo |
| 1054 | geometry_info; |
| 1055 | |
| 1056 | MagickStatusType |
| 1057 | status; |
| 1058 | |
| 1059 | PointInfo |
| 1060 | scale; |
| 1061 | |
| 1062 | /* |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1063 | Geometry is a percentage of the image size, not canvas size |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1064 | */ |
| 1065 | if (image->gravity != UndefinedGravity) |
| 1066 | flags|=XValue | YValue; |
| 1067 | status=ParseGeometry(geometry,&geometry_info); |
| 1068 | scale.x=geometry_info.rho; |
| 1069 | if ((status & RhoValue) == 0) |
| 1070 | scale.x=100.0; |
| 1071 | scale.y=geometry_info.sigma; |
| 1072 | if ((status & SigmaValue) == 0) |
| 1073 | scale.y=scale.x; |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 1074 | region_info->width=(size_t) floor((scale.x*image->columns/100.0)+0.5); |
| 1075 | region_info->height=(size_t) floor((scale.y*image->rows/100.0)+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1076 | } |
| 1077 | /* |
| 1078 | Adjust offset according to gravity setting. |
| 1079 | */ |
| 1080 | width=region_info->width; |
| 1081 | height=region_info->height; |
| 1082 | if (width == 0) |
| 1083 | region_info->width=image->page.width | image->columns; |
| 1084 | if (height == 0) |
| 1085 | region_info->height=image->page.height | image->rows; |
| 1086 | GravityAdjustGeometry(image->columns,image->rows,image->gravity,region_info); |
| 1087 | region_info->width=width; |
| 1088 | region_info->height=height; |
| 1089 | return(flags); |
| 1090 | } |
| 1091 | |
| 1092 | /* |
| 1093 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1094 | % % |
| 1095 | % % |
| 1096 | % % |
| 1097 | + P a r s e M e t a G e o m e t r y % |
| 1098 | % % |
| 1099 | % % |
| 1100 | % % |
| 1101 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1102 | % |
| 1103 | % ParseMetaGeometry() is similar to GetGeometry() except the returned |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1104 | % geometry is modified as determined by the meta characters: %, !, <, >, @, |
| 1105 | % and ^ in relation to image resizing. |
| 1106 | % |
| 1107 | % Final image dimensions are adjusted so as to preserve the aspect ratio as |
glennrp | dcabf6d | 2011-06-25 03:26:14 +0000 | [diff] [blame] | 1108 | % much as possible, while generating a integer (pixel) size, and fitting the |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1109 | % image within the specified geometry width and height. |
| 1110 | % |
| 1111 | % Flags are interpreted... |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 1112 | % % geometry size is given percentage of original image size |
| 1113 | % ! do not try to preserve aspect ratio |
| 1114 | % < only enlarge images smaller that geometry |
| 1115 | % > only shrink images larger than geometry |
| 1116 | % @ Fit image to contain at most this many pixels |
| 1117 | % ^ Contain the given geometry given, (minimal dimensions given) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1118 | % |
| 1119 | % The format of the ParseMetaGeometry method is: |
| 1120 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1121 | % MagickStatusType ParseMetaGeometry(const char *geometry,ssize_t *x, |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 1122 | % ssize_t *y, size_t *width,size_t *height) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1123 | % |
| 1124 | % A description of each parameter follows: |
| 1125 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1126 | % o geometry: The geometry string (e.g. "100x100+10+10"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1127 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1128 | % o x,y: The x and y offset, set according to the geometry specification. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1129 | % |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 1130 | % o width,height: The width and height of original image, modified by |
| 1131 | % the given geometry specification. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1132 | % |
| 1133 | */ |
| 1134 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1135 | static inline size_t MagickMax(const size_t x, |
| 1136 | const size_t y) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1137 | { |
| 1138 | if (x > y) |
| 1139 | return(x); |
| 1140 | return(y); |
| 1141 | } |
| 1142 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1143 | MagickExport MagickStatusType ParseMetaGeometry(const char *geometry,ssize_t *x, |
| 1144 | ssize_t *y,size_t *width,size_t *height) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1145 | { |
| 1146 | GeometryInfo |
| 1147 | geometry_info; |
| 1148 | |
| 1149 | MagickStatusType |
| 1150 | flags; |
| 1151 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1152 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1153 | former_height, |
| 1154 | former_width; |
| 1155 | |
| 1156 | /* |
| 1157 | Ensure the image geometry is valid. |
| 1158 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1159 | assert(x != (ssize_t *) NULL); |
| 1160 | assert(y != (ssize_t *) NULL); |
| 1161 | assert(width != (size_t *) NULL); |
| 1162 | assert(height != (size_t *) NULL); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1163 | if ((geometry == (char *) NULL) || (*geometry == '\0')) |
| 1164 | return(NoValue); |
| 1165 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",geometry); |
| 1166 | /* |
| 1167 | Parse geometry using GetGeometry. |
| 1168 | */ |
| 1169 | SetGeometryInfo(&geometry_info); |
| 1170 | former_width=(*width); |
| 1171 | former_height=(*height); |
| 1172 | flags=GetGeometry(geometry,x,y,width,height); |
| 1173 | if ((flags & PercentValue) != 0) |
| 1174 | { |
| 1175 | MagickStatusType |
| 1176 | flags; |
| 1177 | |
| 1178 | PointInfo |
| 1179 | scale; |
| 1180 | |
| 1181 | /* |
| 1182 | Geometry is a percentage of the image size. |
| 1183 | */ |
| 1184 | flags=ParseGeometry(geometry,&geometry_info); |
| 1185 | scale.x=geometry_info.rho; |
| 1186 | if ((flags & RhoValue) == 0) |
| 1187 | scale.x=100.0; |
| 1188 | scale.y=geometry_info.sigma; |
| 1189 | if ((flags & SigmaValue) == 0) |
| 1190 | scale.y=scale.x; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1191 | *width=(size_t) floor(scale.x*former_width/100.0+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1192 | if (*width == 0) |
| 1193 | *width=1; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1194 | *height=(size_t) floor(scale.y*former_height/100.0+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1195 | if (*height == 0) |
| 1196 | *height=1; |
| 1197 | former_width=(*width); |
| 1198 | former_height=(*height); |
| 1199 | } |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1200 | if (((flags & AspectValue) != 0) || ((*width == former_width) && |
| 1201 | (*height == former_height))) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1202 | { |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1203 | if ((flags & RhoValue) == 0) |
| 1204 | *width=former_width; |
| 1205 | if ((flags & SigmaValue) == 0) |
| 1206 | *height=former_height; |
| 1207 | } |
| 1208 | else |
| 1209 | { |
| 1210 | double |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1211 | scale_factor; |
| 1212 | |
| 1213 | /* |
| 1214 | Respect aspect ratio of the image. |
| 1215 | */ |
| 1216 | if ((former_width == 0) || (former_height == 0)) |
| 1217 | scale_factor=1.0; |
| 1218 | else |
| 1219 | if (((flags & RhoValue) != 0) && (flags & SigmaValue) != 0) |
| 1220 | { |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1221 | scale_factor=(double) *width/(double) former_width; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1222 | if ((flags & MinimumValue) == 0) |
| 1223 | { |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1224 | if (scale_factor > ((double) *height/(double) former_height)) |
| 1225 | scale_factor=(double) *height/(double) former_height; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1226 | } |
| 1227 | else |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1228 | if (scale_factor < ((double) *height/(double) former_height)) |
| 1229 | scale_factor=(double) *height/(double) former_height; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1230 | } |
| 1231 | else |
| 1232 | if ((flags & RhoValue) != 0) |
| 1233 | { |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1234 | scale_factor=(double) *width/(double) former_width; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1235 | if (((flags & MinimumValue) != 0) && |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1236 | (scale_factor < ((double) *width/(double) former_height))) |
| 1237 | scale_factor=(double) *width/(double) former_height; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1238 | } |
| 1239 | else |
| 1240 | { |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1241 | scale_factor=(double) *height/(double) former_height; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1242 | if (((flags & MinimumValue) != 0) && |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1243 | (scale_factor < ((double) *height/(double) former_width))) |
| 1244 | scale_factor=(double) *height/(double) former_width; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1245 | } |
cristy | 272f23a | 2011-03-30 00:37:11 +0000 | [diff] [blame] | 1246 | *width=MagickMax((size_t) floor(scale_factor*former_width+0.5),1UL); |
| 1247 | *height=MagickMax((size_t) floor(scale_factor*former_height+0.5),1UL); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1248 | } |
| 1249 | if ((flags & GreaterValue) != 0) |
| 1250 | { |
| 1251 | if (former_width < *width) |
| 1252 | *width=former_width; |
| 1253 | if (former_height < *height) |
| 1254 | *height=former_height; |
| 1255 | } |
| 1256 | if ((flags & LessValue) != 0) |
| 1257 | { |
| 1258 | if (former_width > *width) |
| 1259 | *width=former_width; |
| 1260 | if (former_height > *height) |
| 1261 | *height=former_height; |
| 1262 | } |
| 1263 | if ((flags & AreaValue) != 0) |
| 1264 | { |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1265 | double |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1266 | area, |
| 1267 | distance; |
| 1268 | |
| 1269 | PointInfo |
| 1270 | scale; |
| 1271 | |
| 1272 | /* |
| 1273 | Geometry is a maximum area in pixels. |
| 1274 | */ |
| 1275 | (void) ParseGeometry(geometry,&geometry_info); |
| 1276 | area=geometry_info.rho; |
| 1277 | distance=sqrt((double) former_width*former_height); |
cristy | 0762335 | 2011-12-07 13:04:03 +0000 | [diff] [blame] | 1278 | scale.x=former_width/(distance/sqrt((double) area)); |
| 1279 | scale.y=former_height/(distance/sqrt((double) area)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1280 | if ((scale.x < (double) *width) || (scale.y < (double) *height)) |
| 1281 | { |
cristy | 11e0a87 | 2012-01-10 16:10:21 +0000 | [diff] [blame] | 1282 | *width=(size_t) (former_width/(distance/sqrt(area))+0.5); |
| 1283 | *height=(size_t) (former_height/(distance/sqrt(area))+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1284 | } |
| 1285 | former_width=(*width); |
| 1286 | former_height=(*height); |
| 1287 | } |
| 1288 | return(flags); |
| 1289 | } |
| 1290 | |
| 1291 | /* |
| 1292 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1293 | % % |
| 1294 | % % |
| 1295 | % % |
| 1296 | % P a r s e P a g e G e o m e t r y % |
| 1297 | % % |
| 1298 | % % |
| 1299 | % % |
| 1300 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1301 | % |
| 1302 | % ParsePageGeometry() returns a region as defined by the geometry string with |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1303 | % respect to the image page (canvas) dimensions. |
| 1304 | % |
| 1305 | % WARNING: Percentage dimensions remain relative to the actual image |
| 1306 | % dimensions, and not canvas dimensions. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1307 | % |
| 1308 | % The format of the ParsePageGeometry method is: |
| 1309 | % |
| 1310 | % MagickStatusType ParsePageGeometry(const Image *image, |
| 1311 | % const char *geometry,RectangeInfo *region_info, |
| 1312 | % ExceptionInfo *exception) |
| 1313 | % |
| 1314 | % A description of each parameter follows: |
| 1315 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1316 | % o geometry: The geometry string (e.g. "100x100+10+10"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1317 | % |
| 1318 | % o region_info: the region as defined by the geometry string with |
| 1319 | % respect to the image and its gravity. |
| 1320 | % |
| 1321 | % o exception: return any errors or warnings in this structure. |
| 1322 | % |
| 1323 | */ |
| 1324 | MagickExport MagickStatusType ParsePageGeometry(const Image *image, |
| 1325 | const char *geometry,RectangleInfo *region_info,ExceptionInfo *exception) |
| 1326 | { |
| 1327 | MagickStatusType |
| 1328 | flags; |
| 1329 | |
| 1330 | SetGeometry(image,region_info); |
| 1331 | if (image->page.width != 0) |
| 1332 | region_info->width=image->page.width; |
| 1333 | if (image->page.height != 0) |
| 1334 | region_info->height=image->page.height; |
| 1335 | flags=ParseAbsoluteGeometry(geometry,region_info); |
| 1336 | if (flags == NoValue) |
| 1337 | { |
| 1338 | (void) ThrowMagickException(exception,GetMagickModule(),OptionError, |
| 1339 | "InvalidGeometry","`%s'",geometry); |
| 1340 | return(flags); |
| 1341 | } |
| 1342 | if ((flags & PercentValue) != 0) |
| 1343 | { |
| 1344 | region_info->width=image->columns; |
| 1345 | region_info->height=image->rows; |
| 1346 | } |
| 1347 | flags=ParseMetaGeometry(geometry,®ion_info->x,®ion_info->y, |
| 1348 | ®ion_info->width,®ion_info->height); |
| 1349 | return(flags); |
| 1350 | } |
| 1351 | |
| 1352 | /* |
| 1353 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1354 | % % |
| 1355 | % % |
| 1356 | % % |
| 1357 | % P a r s e R e g i o n G e o m e t r y % |
| 1358 | % % |
| 1359 | % % |
| 1360 | % % |
| 1361 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1362 | % |
| 1363 | % ParseRegionGeometry() returns a region as defined by the geometry string |
| 1364 | % with respect to the image dimensions and aspect ratio. |
| 1365 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1366 | % This is basically a wrapper around ParseMetaGeometry. This is typically |
| 1367 | % used to parse a geometry string to work out the final integer dimensions |
| 1368 | % for image resizing. |
| 1369 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1370 | % The format of the ParseRegionGeometry method is: |
| 1371 | % |
| 1372 | % MagickStatusType ParseRegionGeometry(const Image *image, |
| 1373 | % const char *geometry,RectangeInfo *region_info, |
| 1374 | % ExceptionInfo *exception) |
| 1375 | % |
| 1376 | % A description of each parameter follows: |
| 1377 | % |
anthony | d58e60c | 2011-03-30 00:24:34 +0000 | [diff] [blame] | 1378 | % o geometry: The geometry string (e.g. "100x100+10+10"). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1379 | % |
| 1380 | % o region_info: the region as defined by the geometry string. |
| 1381 | % |
| 1382 | % o exception: return any errors or warnings in this structure. |
| 1383 | % |
| 1384 | */ |
| 1385 | MagickExport MagickStatusType ParseRegionGeometry(const Image *image, |
| 1386 | const char *geometry,RectangleInfo *region_info,ExceptionInfo *exception) |
| 1387 | { |
| 1388 | MagickStatusType |
| 1389 | flags; |
| 1390 | |
| 1391 | SetGeometry(image,region_info); |
| 1392 | flags=ParseMetaGeometry(geometry,®ion_info->x,®ion_info->y, |
| 1393 | ®ion_info->width,®ion_info->height); |
| 1394 | if (flags == NoValue) |
| 1395 | (void) ThrowMagickException(exception,GetMagickModule(),OptionError, |
| 1396 | "InvalidGeometry","`%s'",geometry); |
| 1397 | return(flags); |
| 1398 | } |
| 1399 | |
| 1400 | /* |
| 1401 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1402 | % % |
| 1403 | % % |
| 1404 | % % |
| 1405 | % S e t G e o m e t r y % |
| 1406 | % % |
| 1407 | % % |
| 1408 | % % |
| 1409 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1410 | % |
| 1411 | % SetGeometry() sets the geometry to its default values. |
| 1412 | % |
| 1413 | % The format of the SetGeometry method is: |
| 1414 | % |
| 1415 | % SetGeometry(const Image *image,RectangleInfo *geometry) |
| 1416 | % |
| 1417 | % A description of each parameter follows: |
| 1418 | % |
| 1419 | % o image: the image. |
| 1420 | % |
| 1421 | % o geometry: the geometry. |
| 1422 | % |
| 1423 | */ |
| 1424 | MagickExport void SetGeometry(const Image *image,RectangleInfo *geometry) |
| 1425 | { |
| 1426 | assert(image != (Image *) NULL); |
| 1427 | assert(image->signature == MagickSignature); |
| 1428 | if (image->debug != MagickFalse) |
| 1429 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1430 | assert(geometry != (RectangleInfo *) NULL); |
| 1431 | (void) ResetMagickMemory(geometry,0,sizeof(*geometry)); |
| 1432 | geometry->width=image->columns; |
| 1433 | geometry->height=image->rows; |
| 1434 | } |
| 1435 | |
| 1436 | /* |
| 1437 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1438 | % % |
| 1439 | % % |
| 1440 | % % |
| 1441 | % S e t G e o m e t r y I n f o % |
| 1442 | % % |
| 1443 | % % |
| 1444 | % % |
| 1445 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1446 | % |
| 1447 | % SetGeometryInfo sets the GeometryInfo structure to its default values. |
| 1448 | % |
| 1449 | % The format of the SetGeometryInfo method is: |
| 1450 | % |
| 1451 | % SetGeometryInfo(GeometryInfo *geometry_info) |
| 1452 | % |
| 1453 | % A description of each parameter follows: |
| 1454 | % |
| 1455 | % o geometry_info: the geometry info structure. |
| 1456 | % |
| 1457 | */ |
| 1458 | MagickExport void SetGeometryInfo(GeometryInfo *geometry_info) |
| 1459 | { |
| 1460 | assert(geometry_info != (GeometryInfo *) NULL); |
| 1461 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 1462 | (void) ResetMagickMemory(geometry_info,0,sizeof(*geometry_info)); |
| 1463 | } |