forked from MapServer/MapServer
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmapcairo.c
1195 lines (1066 loc) · 36.4 KB
/
mapcairo.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/******************************************************************************
* $Id$
*
* Project: MapServer
* Purpose: Cairo Rendering functions
* Author: Thomas Bonfort
*
******************************************************************************
* Copyright (c) 1996-2009 Regents of the University of Minnesota.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include "mapserver.h"
#ifdef USE_CAIRO
#include <cairo.h>
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <cairo-pdf.h>
#include <cairo-svg.h>
#include <cairo-win32.h>
#else
#include <cairo/cairo-pdf.h>
#include <cairo/cairo-svg.h>
#endif
#ifdef USE_SVG_CAIRO
#include <svg-cairo.h>
#else
#ifdef USE_RSVG
#include <librsvg/rsvg.h>
#ifndef LIBRSVG_CHECK_VERSION
#include <librsvg/librsvg-features.h>
#endif
#ifndef RSVG_CAIRO_H
#include <librsvg/rsvg-cairo.h>
#endif
#include <glib-object.h>
#endif
#endif
#include <cpl_string.h>
#include <gdal.h>
#include "fontcache.h"
# include <cairo-ft.h>
/*
#include <pango/pangocairo.h>
#include <glib.h>
*/
#include <string.h>
/*
#include <ft2build.h>
#include FT_FREETYPE_H
*/
typedef struct cairoFaceCache cairoFaceCache;
struct cairoFaceCache {
cairo_font_face_t *face;
FT_Face ftface;
cairo_font_options_t *options;
cairoFaceCache *next;
};
void freeCairoFaceCache(cairoFaceCache *fc) {
cairo_font_face_destroy(fc->face);
cairo_font_options_destroy(fc->options);
}
typedef struct {
cairoFaceCache *cairofacecache;
/* dummy surface and context */
unsigned char dummydata[4];
cairo_surface_t *dummysurface;
cairo_t *dummycr;
} cairoCacheData;
void initializeCache(void **vcache)
{
cairoCacheData *cache = (cairoCacheData*)malloc(sizeof(cairoCacheData));
*vcache = cache;
cache->cairofacecache = NULL;
/* dummy surface and context */
cache->dummysurface = cairo_image_surface_create_for_data(cache->dummydata, CAIRO_FORMAT_ARGB32, 1,1,4);
cache->dummycr = cairo_create(cache->dummysurface);
}
int cleanupCairo(void *cache)
{
cairoCacheData *ccache = (cairoCacheData*)cache;
if(ccache->dummycr) {
cairo_destroy(ccache->dummycr);
}
if(ccache->dummysurface) {
cairo_surface_destroy(ccache->dummysurface);
}
if(ccache->cairofacecache) {
cairoFaceCache *next,*cur;
cur = ccache->cairofacecache;
do {
next = cur->next;
freeCairoFaceCache(cur);
free(cur);
cur=next;
} while(cur);
}
free(ccache);
return MS_SUCCESS;
}
typedef struct {
cairo_surface_t *surface;
cairo_t *cr;
bufferObj *outputStream;
int use_alpha;
} cairo_renderer;
#define CAIRO_RENDERER(im) ((cairo_renderer*)(im->img.plugin))
int freeImageCairo(imageObj *img)
{
cairo_renderer *r = CAIRO_RENDERER(img);
if(r) {
cairo_destroy(r->cr);
cairo_surface_finish(r->surface);
cairo_surface_destroy(r->surface);
if(r->outputStream) {
msBufferFree(r->outputStream);
free(r->outputStream);
}
free(r);
}
return MS_SUCCESS;
}
static cairoFaceCache* getCairoFontFace(cairoCacheData *cache, FT_Face ftface) {
cairoFaceCache *cur = cache->cairofacecache;
while(cur) {
if(cur->ftface == ftface) return cur;
cur = cur->next;
}
cur = msSmallMalloc(sizeof(cairoFaceCache));
cur->next = cache->cairofacecache;
cache->cairofacecache = cur;
cur->ftface = ftface;
cur->face = cairo_ft_font_face_create_for_ft_face(ftface, 0);
cur->options = cairo_font_options_create();
cairo_font_options_set_hint_style(cur->options,CAIRO_HINT_STYLE_NONE);
return cur;
}
#define msCairoSetSourceColor(cr, c) cairo_set_source_rgba((cr),(c)->red/255.0,(c)->green/255.0,(c)->blue/255.0,(c)->alpha/255.0);
int renderLineCairo(imageObj *img, shapeObj *p, strokeStyleObj *stroke)
{
int i,j;
cairo_renderer *r = CAIRO_RENDERER(img);
assert(stroke->color);
cairo_new_path(r->cr);
msCairoSetSourceColor(r->cr,stroke->color);
for(i=0; i<p->numlines; i++) {
lineObj *l = &(p->line[i]);
if(l->numpoints == 0) continue;
cairo_move_to(r->cr,l->point[0].x,l->point[0].y);
for(j=1; j<l->numpoints; j++) {
cairo_line_to(r->cr,l->point[j].x,l->point[j].y);
}
}
if(stroke->patternlength>0) {
cairo_set_dash(r->cr,stroke->pattern,stroke->patternlength,-stroke->patternoffset);
}
switch(stroke->linecap) {
case MS_CJC_BUTT:
cairo_set_line_cap(r->cr,CAIRO_LINE_CAP_BUTT);
break;
case MS_CJC_SQUARE:
cairo_set_line_cap(r->cr,CAIRO_LINE_CAP_SQUARE);
break;
case MS_CJC_ROUND:
case MS_CJC_NONE:
default:
cairo_set_line_cap(r->cr,CAIRO_LINE_CAP_ROUND);
}
cairo_set_line_width (r->cr, stroke->width);
cairo_stroke (r->cr);
if(stroke->patternlength>0) {
cairo_set_dash(r->cr,stroke->pattern,0,0);
}
return MS_SUCCESS;
}
int renderPolygonCairo(imageObj *img, shapeObj *p, colorObj *c)
{
cairo_renderer *r = CAIRO_RENDERER(img);
int i,j;
cairo_new_path(r->cr);
cairo_set_fill_rule(r->cr,CAIRO_FILL_RULE_EVEN_ODD);
msCairoSetSourceColor(r->cr,c);
for(i=0; i<p->numlines; i++) {
lineObj *l = &(p->line[i]);
cairo_move_to(r->cr,l->point[0].x,l->point[0].y);
for(j=1; j<l->numpoints; j++) {
cairo_line_to(r->cr,l->point[j].x,l->point[j].y);
}
cairo_close_path(r->cr);
}
cairo_fill(r->cr);
return MS_SUCCESS;
}
int renderPolygonTiledCairo(imageObj *img, shapeObj *p, imageObj *tile)
{
int i,j;
cairo_renderer *r = CAIRO_RENDERER(img);
cairo_renderer *tileRenderer = CAIRO_RENDERER(tile);
cairo_pattern_t *pattern = cairo_pattern_create_for_surface(tileRenderer->surface);
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
cairo_set_source(r->cr, pattern);
for (i = 0; i < p->numlines; i++) {
lineObj *l = &(p->line[i]);
cairo_move_to(r->cr, l->point[0].x, l->point[0].y);
for (j = 1; j < l->numpoints; j++) {
cairo_line_to(r->cr, l->point[j].x, l->point[j].y);
}
/* cairo_close_path(r->cr); */
}
cairo_fill(r->cr);
cairo_pattern_destroy(pattern);
return MS_SUCCESS;
}
cairo_surface_t *createSurfaceFromBuffer(rasterBufferObj *b)
{
assert(b->type == MS_BUFFER_BYTE_RGBA);
return cairo_image_surface_create_for_data (b->data.rgba.pixels,
CAIRO_FORMAT_ARGB32,
b->width,
b->height,
b->data.rgba.row_step);
}
int renderPixmapSymbolCairo(imageObj *img, double x, double y,symbolObj *symbol,
symbolStyleObj *style)
{
cairo_renderer *r = CAIRO_RENDERER(img);
cairo_surface_t *im;
rasterBufferObj *b = symbol->pixmap_buffer;
assert(b);
if(!symbol->renderer_cache) {
symbol->renderer_cache = (void*)createSurfaceFromBuffer(b);
}
assert(symbol->renderer_cache);
im=(cairo_surface_t*)symbol->renderer_cache;
cairo_save(r->cr);
if(style->rotation != 0 || style->scale != 1) {
cairo_translate (r->cr, x,y);
cairo_rotate (r->cr, -style->rotation);
cairo_scale (r->cr, style->scale,style->scale);
cairo_translate (r->cr, -0.5*b->width, -0.5*b->height);
} else {
cairo_translate (r->cr, MS_NINT(x-0.5*b->width),MS_NINT(y-0.5*b->height));
}
cairo_set_source_surface (r->cr, im, 0, 0);
cairo_paint (r->cr);
cairo_restore(r->cr);
return MS_SUCCESS;
}
int renderVectorSymbolCairo(imageObj *img, double x, double y, symbolObj *symbol,
symbolStyleObj *style)
{
cairo_renderer *r = CAIRO_RENDERER(img);
double ox=symbol->sizex*0.5,oy=symbol->sizey*0.5;
int is_new = 1,i;
cairo_new_path(r->cr);
cairo_save(r->cr);
cairo_translate(r->cr,x,y);
cairo_scale(r->cr,style->scale,style->scale);
cairo_rotate(r->cr,-style->rotation);
cairo_translate(r->cr,-ox,-oy);
for (i = 0; i < symbol->numpoints; i++) {
if ((symbol->points[i].x == -99) && (symbol->points[i].y == -99)) { /* (PENUP) */
is_new = 1;
} else {
if (is_new) {
cairo_move_to(r->cr,symbol->points[i].x,symbol->points[i].y);
is_new = 0;
} else {
cairo_line_to(r->cr,symbol->points[i].x,symbol->points[i].y);
}
}
}
cairo_restore(r->cr);
if(style->color) {
msCairoSetSourceColor(r->cr,style->color);
cairo_fill_preserve(r->cr);
}
if(style->outlinewidth>0) {
msCairoSetSourceColor(r->cr,style->outlinecolor);
cairo_set_line_width (r->cr, style->outlinewidth);
cairo_stroke_preserve(r->cr);
}
cairo_new_path(r->cr);
return MS_SUCCESS;
}
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache {
rasterBufferObj *pixmap_buffer;
#ifdef USE_RSVG
RsvgHandle *svgc;
#else
svg_cairo_t *svgc;
#endif
double scale,rotation;
} ;
#endif
int renderSVGSymbolCairo(imageObj *img, double x, double y, symbolObj *symbol,
symbolStyleObj *style)
{
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache *cache;
cairo_renderer *r = CAIRO_RENDERER(img);
msPreloadSVGSymbol(symbol);
assert(symbol->renderer_cache);
cache = symbol->renderer_cache;
cairo_save(r->cr);
cairo_translate(r->cr,x,y);
cairo_scale(r->cr,style->scale,style->scale);
if (style->rotation != 0) {
cairo_rotate(r->cr, -style->rotation);
cairo_translate (r->cr, -(int)(symbol->sizex/2), -(int)(symbol->sizey/2));
} else
cairo_translate (r->cr, -(int)(symbol->sizex/2), -(int)(symbol->sizey/2));
#ifdef USE_SVG_CAIRO
{
svg_cairo_status_t status;
status = svg_cairo_render(cache->svgc, r->cr);
if(status != SVG_CAIRO_STATUS_SUCCESS) {
cairo_restore(r->cr);
return MS_FAILURE;
}
}
#else
rsvg_handle_render_cairo(cache->svgc, r->cr);
#endif
cairo_restore(r->cr);
return MS_SUCCESS;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but is not built with libsvgcairo",
"renderSVGSymbolCairo()");
return MS_FAILURE;
#endif
}
int renderTileCairo(imageObj *img, imageObj *tile, double x, double y)
{
cairo_renderer *r = CAIRO_RENDERER(img);
cairo_surface_t *im = CAIRO_RENDERER(tile)->surface;
int w = cairo_image_surface_get_width (im);
int h = cairo_image_surface_get_height (im);
cairo_save(r->cr);
cairo_translate(r->cr, MS_NINT(x-0.5 * w), MS_NINT(y -0.5 * h));
cairo_set_source_surface(r->cr, im, 0, 0);
cairo_pattern_set_filter (cairo_get_source (r->cr), CAIRO_FILTER_NEAREST);
cairo_paint(r->cr);
cairo_restore(r->cr);
return MS_SUCCESS;
}
int renderGlyphs2Cairo(imageObj *img, textPathObj *tp, colorObj *c, colorObj *oc, int ow, int isMarker) {
cairo_renderer *r = CAIRO_RENDERER(img);
cairoCacheData *cache = MS_IMAGE_RENDERER_CACHE(img);
cairoFaceCache *cairo_face = NULL;
FT_Face prevface = NULL;
int g;
cairo_set_font_size(r->cr,MS_NINT(tp->glyph_size * 96.0/72.0));
for(g=0;g<tp->numglyphs;g++) {
glyphObj *gl = &tp->glyphs[g];
cairo_glyph_t glyph;
/* load the glyph's face into cairo, if not already present */
if(gl->face->face != prevface) {
cairo_face = getCairoFontFace(cache,gl->face->face);
cairo_set_font_face(r->cr, cairo_face->face);
cairo_set_font_options(r->cr,cairo_face->options);
prevface = gl->face->face;
cairo_set_font_size(r->cr,MS_NINT(tp->glyph_size * 96.0/72.0));
}
cairo_save(r->cr);
cairo_translate(r->cr,gl->pnt.x,gl->pnt.y);
if(gl->rot != 0.0)
cairo_rotate(r->cr, -gl->rot);
glyph.x = glyph.y = 0;
glyph.index = gl->glyph->key.codepoint;
cairo_glyph_path(r->cr,&glyph,1);
cairo_restore(r->cr);
}
if (oc) {
cairo_save(r->cr);
msCairoSetSourceColor(r->cr, oc);
cairo_set_line_width(r->cr, ow + 1);
cairo_stroke_preserve(r->cr);
cairo_restore(r->cr);
}
if(c) {
msCairoSetSourceColor(r->cr, c);
cairo_fill(r->cr);
}
cairo_new_path(r->cr);
return MS_SUCCESS;
}
cairo_status_t _stream_write_fn(void *b, const unsigned char *data, unsigned int length)
{
msBufferAppend((bufferObj*)b,(void*)data,length);
return CAIRO_STATUS_SUCCESS;
}
imageObj* createImageCairo(int width, int height, outputFormatObj *format,colorObj* bg)
{
imageObj *image = NULL;
cairo_renderer *r=NULL;
if (format->imagemode != MS_IMAGEMODE_RGB && format->imagemode!= MS_IMAGEMODE_RGBA) {
msSetError(MS_MISCERR,
"Cairo driver only supports RGB or RGBA pixel models.","msImageCreateCairo()");
return image;
}
if (width > 0 && height > 0) {
image = (imageObj *) calloc(1, sizeof(imageObj));
r = (cairo_renderer*)calloc(1,sizeof(cairo_renderer));
if(!strcasecmp(format->driver,"cairo/pdf")) {
r->outputStream = (bufferObj*)malloc(sizeof(bufferObj));
msBufferInit(r->outputStream);
r->surface = cairo_pdf_surface_create_for_stream(
_stream_write_fn,
r->outputStream,
width,height);
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,15,10)
{
const char* msPDFCreationDate = getenv("MS_PDF_CREATION_DATE");
if( msPDFCreationDate )
{
cairo_pdf_surface_set_metadata (r->surface,
CAIRO_PDF_METADATA_CREATE_DATE,
msPDFCreationDate);
}
}
#endif
} else if(!strcasecmp(format->driver,"cairo/svg")) {
r->outputStream = (bufferObj*)malloc(sizeof(bufferObj));
msBufferInit(r->outputStream);
r->surface = cairo_svg_surface_create_for_stream(
_stream_write_fn,
r->outputStream,
width,height);
} else if(!strcasecmp(format->driver,"cairo/winGDI") && format->device) {
#if CAIRO_HAS_WIN32_SURFACE
r->outputStream = NULL;
r->surface = cairo_win32_surface_create(format->device);
#else
msSetError(MS_RENDERERERR, "Cannot create cairo image. Cairo was not compiled with support for the win32 backend.",
"msImageCreateCairo()");
#endif
} else if(!strcasecmp(format->driver,"cairo/winGDIPrint") && format->device) {
#if CAIRO_HAS_WIN32_SURFACE
r->outputStream = NULL;
r->surface = cairo_win32_printing_surface_create(format->device);
#else
msSetError(MS_RENDERERERR, "Cannot create cairo image. Cairo was not compiled with support for the win32 backend.",
"msImageCreateCairo()");
#endif
} else {
r->outputStream = NULL;
r->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
}
r->cr = cairo_create(r->surface);
if(format->transparent || !bg || !MS_VALID_COLOR(*bg)) {
r->use_alpha = 1;
cairo_set_source_rgba (r->cr, 0,0,0,0);
} else {
r->use_alpha = 0;
msCairoSetSourceColor(r->cr,bg);
}
cairo_save (r->cr);
cairo_set_operator (r->cr, CAIRO_OPERATOR_SOURCE);
cairo_paint (r->cr);
cairo_restore (r->cr);
cairo_set_line_cap (r->cr,CAIRO_LINE_CAP_ROUND);
cairo_set_line_join(r->cr,CAIRO_LINE_JOIN_ROUND);
image->img.plugin = (void*)r;
} else {
msSetError(MS_RENDERERERR, "Cannot create cairo image of size %dx%d.",
"msImageCreateCairo()", width, height);
}
return image;
}
/* msSaveImagePostPDFProcessing() will call the GDAL PDF driver to add geospatial */
/* information to the regular PDF generated by cairo. This is only triggered if the */
/* GEO_ENCODING outputformat option is set (to ISO32000 or OGC_BP). Additionnal */
/* options can be provided by specifying outputformat options starting with */
/* METADATA_ITEM: prefix. For example METADATA_ITEM:PRODUCER=MapServer */
/* Those options are AUTHOR, CREATOR, CREATION_DATE, KEYWORDS, PRODUCER, SUBJECT, TITLE */
/* See http://gdal.org/frmt_pdf.html documentation. */
static void msTransformToGeospatialPDF(imageObj *img, mapObj *map, cairo_renderer *r)
{
GDALDatasetH hDS = NULL;
const char* pszGEO_ENCODING = NULL;
GDALDriverH hPDFDriver = NULL;
const char* pszVirtualIO = NULL;
int bVirtualIO = FALSE;
char* pszTmpFilename = NULL;
VSILFILE* fp = NULL;
if (map == NULL)
return;
pszGEO_ENCODING = msGetOutputFormatOption(img->format, "GEO_ENCODING", NULL);
if (pszGEO_ENCODING == NULL)
return;
msGDALInitialize();
hPDFDriver = GDALGetDriverByName("PDF");
if (hPDFDriver == NULL)
return;
/* When compiled against libpoppler, the PDF driver is VirtualIO capable */
/* but not, when it is compiled against libpodofo. */
pszVirtualIO = GDALGetMetadataItem( hPDFDriver, GDAL_DCAP_VIRTUALIO, NULL );
if (pszVirtualIO)
bVirtualIO = CSLTestBoolean(pszVirtualIO);
if (bVirtualIO)
pszTmpFilename = msTmpFile(map, NULL, "/vsimem/mscairopdf/", "pdf");
else
pszTmpFilename = msTmpFile(map, map->mappath, NULL, "pdf");
/* Copy content of outputStream buffer into file */
fp = VSIFOpenL(pszTmpFilename, "wb");
if (fp == NULL) {
msFree(pszTmpFilename);
return;
}
VSIFWriteL(r->outputStream->data, 1, r->outputStream->size, fp);
VSIFCloseL(fp);
fp = NULL;
hDS = GDALOpen(pszTmpFilename, GA_Update);
if ( hDS != NULL ) {
char* pszWKT = msProjectionObj2OGCWKT( &(map->projection) );
if( pszWKT != NULL ) {
double adfGeoTransform[6];
int i;
/* Add user-specified options */
for( i = 0; i < img->format->numformatoptions; i++ ) {
const char* pszOption = img->format->formatoptions[i];
if( strncasecmp(pszOption,"METADATA_ITEM:",14) == 0 ) {
char* pszKey = NULL;
const char* pszValue = CPLParseNameValue(pszOption + 14,
&pszKey);
if( pszKey != NULL ) {
GDALSetMetadataItem(hDS, pszKey, pszValue, NULL);
CPLFree(pszKey);
}
}
}
/* We need to rescale the geotransform because GDAL will not necessary */
/* open the PDF with the DPI that was used to generate it */
memcpy(adfGeoTransform, map->gt.geotransform, 6 * sizeof(double));
adfGeoTransform[1] = adfGeoTransform[1] * map->width / GDALGetRasterXSize(hDS);
adfGeoTransform[5] = adfGeoTransform[5] * map->height / GDALGetRasterYSize(hDS);
GDALSetGeoTransform(hDS, adfGeoTransform);
GDALSetProjection(hDS, pszWKT);
msFree( pszWKT );
pszWKT = NULL;
CPLSetThreadLocalConfigOption("GDAL_PDF_GEO_ENCODING", pszGEO_ENCODING);
GDALClose(hDS);
hDS = NULL;
CPLSetThreadLocalConfigOption("GDAL_PDF_GEO_ENCODING", NULL);
/* We need to replace the buffer with the content of the GDAL file */
fp = VSIFOpenL(pszTmpFilename, "rb");
if( fp != NULL ) {
int nFileSize;
VSIFSeekL(fp, 0, SEEK_END);
nFileSize = (int)VSIFTellL(fp);
msBufferResize(r->outputStream, nFileSize);
VSIFSeekL(fp, 0, SEEK_SET);
r->outputStream->size = VSIFReadL(r->outputStream->data, 1, nFileSize, fp);
VSIFCloseL(fp);
fp = NULL;
}
}
}
if ( hDS != NULL )
GDALClose(hDS);
VSIUnlink(pszTmpFilename);
msFree(pszTmpFilename);
}
int saveImageCairo(imageObj *img, mapObj *map, FILE *fp, outputFormatObj *format)
{
cairo_renderer *r = CAIRO_RENDERER(img);
if(!strcasecmp(img->format->driver,"cairo/pdf") || !strcasecmp(img->format->driver,"cairo/svg")) {
cairo_surface_finish (r->surface);
if (map != NULL && !strcasecmp(img->format->driver,"cairo/pdf"))
msTransformToGeospatialPDF(img, map, r);
msIO_fwrite(r->outputStream->data,r->outputStream->size,1,fp);
} else {
/* not supported */
}
return MS_SUCCESS;
}
unsigned char* saveImageBufferCairo(imageObj *img, int *size_ptr, outputFormatObj *format)
{
cairo_renderer *r = CAIRO_RENDERER(img);
unsigned char *data;
assert(!strcasecmp(img->format->driver,"cairo/pdf") || !strcasecmp(img->format->driver,"cairo/svg"));
cairo_surface_finish (r->surface);
data = msSmallMalloc(r->outputStream->size);
memcpy(data,r->outputStream->data,r->outputStream->size);
*size_ptr = (int)r->outputStream->size;
return data;
}
int renderEllipseSymbolCairo(imageObj *img, double x, double y, symbolObj *symbol,
symbolStyleObj *style)
{
cairo_renderer *r = CAIRO_RENDERER(img);
cairo_save(r->cr);
cairo_set_line_cap(r->cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join(r->cr, CAIRO_LINE_JOIN_MITER);
cairo_translate(r->cr,x,y);
cairo_rotate(r->cr,-style->rotation);
cairo_scale(r->cr,symbol->sizex*style->scale/2,symbol->sizey*style->scale/2);
cairo_arc (r->cr, 0,0,1, 0, 2 * MS_PI);
cairo_restore(r->cr);
if(style->color) {
msCairoSetSourceColor(r->cr, style->color);
cairo_fill_preserve(r->cr);
}
if(style->outlinewidth > 0) {
cairo_set_line_width (r->cr, style->outlinewidth);
msCairoSetSourceColor(r->cr, style->outlinecolor);
cairo_stroke_preserve(r->cr);
}
cairo_new_path(r->cr);
return MS_SUCCESS;
}
int startLayerVectorCairo(imageObj *img, mapObj *map, layerObj *layer)
{
if(layer->compositer && layer->compositer->opacity<100) {
cairo_renderer *r = CAIRO_RENDERER(img);
cairo_push_group (r->cr);
}
return MS_SUCCESS;
}
int closeLayerVectorCairo(imageObj *img, mapObj *map, layerObj *layer)
{
if(layer->compositer && layer->compositer->opacity<100) {
cairo_renderer *r = CAIRO_RENDERER(img);
cairo_pop_group_to_source (r->cr);
cairo_paint_with_alpha (r->cr, layer->compositer->opacity*0.01);
}
return MS_SUCCESS;
}
int startLayerRasterCairo(imageObj *img, mapObj *map, layerObj *layer)
{
return MS_SUCCESS;
}
int closeLayerRasterCairo(imageObj *img, mapObj *map, layerObj *layer)
{
return MS_SUCCESS;
}
int getRasterBufferHandleCairo(imageObj *img, rasterBufferObj *rb)
{
unsigned char *pb;
cairo_renderer *r = CAIRO_RENDERER(img);
rb->type = MS_BUFFER_BYTE_RGBA;
pb = cairo_image_surface_get_data(r->surface);
rb->data.rgba.pixels = pb;
rb->data.rgba.row_step = cairo_image_surface_get_stride(r->surface);
rb->data.rgba.pixel_step=4;
rb->width = cairo_image_surface_get_width(r->surface);
rb->height = cairo_image_surface_get_height(r->surface);
rb->data.rgba.r = &(pb[2]);
rb->data.rgba.g = &(pb[1]);
rb->data.rgba.b = &(pb[0]);
if(r->use_alpha)
rb->data.rgba.a = &(pb[3]);
else
rb->data.rgba.a = NULL;
return MS_SUCCESS;
}
int getRasterBufferCopyCairo(imageObj *img, rasterBufferObj *rb)
{
cairo_renderer *r = CAIRO_RENDERER(img);
unsigned char *pb;
rb->type = MS_BUFFER_BYTE_RGBA;
rb->data.rgba.row_step = cairo_image_surface_get_stride(r->surface);
rb->data.rgba.pixel_step=4;
rb->width = cairo_image_surface_get_width(r->surface);
rb->height = cairo_image_surface_get_height(r->surface);
pb = (unsigned char*)malloc(rb->height * rb->data.rgba.row_step * sizeof(unsigned char));
memcpy(pb,cairo_image_surface_get_data(r->surface),rb->height * rb->data.rgba.row_step);
rb->data.rgba.pixels = pb;
rb->data.rgba.r = &(pb[2]);
rb->data.rgba.g = &(pb[1]);
rb->data.rgba.b = &(pb[0]);
if(r->use_alpha)
rb->data.rgba.a = &(pb[3]);
else
rb->data.rgba.a = NULL;
return MS_SUCCESS;
}
static cairo_operator_t ms2cairo_compop(CompositingOperation op) {
switch(op) {
case MS_COMPOP_CLEAR:
return CAIRO_OPERATOR_CLEAR;
case MS_COMPOP_SRC:
return CAIRO_OPERATOR_SOURCE;
case MS_COMPOP_DST:
return CAIRO_OPERATOR_DEST;
case MS_COMPOP_SRC_OVER:
return CAIRO_OPERATOR_OVER;
case MS_COMPOP_DST_OVER:
return CAIRO_OPERATOR_DEST_OVER;
case MS_COMPOP_SRC_IN:
return CAIRO_OPERATOR_IN;
case MS_COMPOP_DST_IN:
return CAIRO_OPERATOR_DEST_IN;
case MS_COMPOP_SRC_OUT:
return CAIRO_OPERATOR_OUT;
case MS_COMPOP_DST_OUT:
return CAIRO_OPERATOR_DEST_OUT;
case MS_COMPOP_SRC_ATOP:
return CAIRO_OPERATOR_ATOP;
case MS_COMPOP_DST_ATOP:
return CAIRO_OPERATOR_DEST_ATOP;
case MS_COMPOP_XOR:
return CAIRO_OPERATOR_XOR;
case MS_COMPOP_PLUS:
return CAIRO_OPERATOR_ADD;
case MS_COMPOP_MULTIPLY:
return CAIRO_OPERATOR_MULTIPLY;
case MS_COMPOP_SCREEN:
return CAIRO_OPERATOR_SCREEN;
case MS_COMPOP_OVERLAY:
return CAIRO_OPERATOR_OVERLAY;
case MS_COMPOP_DARKEN:
return CAIRO_OPERATOR_DARKEN;
case MS_COMPOP_LIGHTEN:
return CAIRO_OPERATOR_LIGHTEN;
case MS_COMPOP_COLOR_DODGE:
return CAIRO_OPERATOR_COLOR_DODGE;
case MS_COMPOP_COLOR_BURN:
return CAIRO_OPERATOR_COLOR_BURN;
case MS_COMPOP_HARD_LIGHT:
return CAIRO_OPERATOR_HARD_LIGHT;
case MS_COMPOP_SOFT_LIGHT:
return CAIRO_OPERATOR_SOFT_LIGHT;
case MS_COMPOP_DIFFERENCE:
return CAIRO_OPERATOR_DIFFERENCE;
case MS_COMPOP_EXCLUSION:
return CAIRO_OPERATOR_EXCLUSION;
case MS_COMPOP_INVERT:
case MS_COMPOP_INVERT_RGB:
case MS_COMPOP_MINUS:
case MS_COMPOP_CONTRAST:
default:
return CAIRO_OPERATOR_OVER;
}
}
int cairoCompositeRasterBuffer(imageObj *img, rasterBufferObj *rb, CompositingOperation comp, int opacity) {
cairo_surface_t *src;
cairo_renderer *r;
if(rb->type != MS_BUFFER_BYTE_RGBA) {
return MS_FAILURE;
}
r = CAIRO_RENDERER(img);
src = cairo_image_surface_create_for_data(rb->data.rgba.pixels,CAIRO_FORMAT_ARGB32,
rb->width,rb->height,
rb->data.rgba.row_step);
cairo_set_source_surface (r->cr,src,0,0);
cairo_set_operator(r->cr, ms2cairo_compop(comp));
cairo_paint_with_alpha(r->cr,opacity/100.0);
cairo_surface_finish(src);
cairo_surface_destroy(src);
cairo_set_operator(r->cr,CAIRO_OPERATOR_OVER);
return MS_SUCCESS;
}
int mergeRasterBufferCairo(imageObj *img, rasterBufferObj *rb, double opacity,
int srcX, int srcY, int dstX, int dstY,
int width, int height)
{
cairo_surface_t *src;
cairo_renderer *r;
/* not implemented for src,dst,width and height */
if(rb->type != MS_BUFFER_BYTE_RGBA) {
return MS_FAILURE;
}
r = CAIRO_RENDERER(img);
src = cairo_image_surface_create_for_data(rb->data.rgba.pixels,CAIRO_FORMAT_ARGB32,
rb->width,rb->height,
rb->data.rgba.row_step);
if(dstX||dstY||srcX||srcY||width!=img->width||height!=img->height) {
cairo_set_source_surface (r->cr, src, dstX - srcX, dstY - srcY);
cairo_rectangle (r->cr, dstX, dstY, width, height);
cairo_fill (r->cr);
} else {
cairo_set_source_surface (r->cr,src,0,0);
cairo_paint_with_alpha(r->cr,opacity);
}
cairo_surface_finish(src);
cairo_surface_destroy(src);
return MS_SUCCESS;
}
void freeSVGCache(symbolObj *s) {
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache *cache = s->renderer_cache;
if(!cache) return;
assert(cache->svgc);
#ifdef USE_SVG_CAIRO
svg_cairo_destroy(cache->svgc);
#else
rsvg_handle_close(cache->svgc, NULL);
#if LIBRSVG_CHECK_VERSION(2,35,0)
g_object_unref(cache->svgc);
#else
rsvg_handle_free(cache->svgc);
#endif
#endif
if(cache->pixmap_buffer) {
msFreeRasterBuffer(cache->pixmap_buffer);
free(cache->pixmap_buffer);
}
msFree(s->renderer_cache);
s->renderer_cache = NULL;
#endif
}
int freeSymbolCairo(symbolObj *s)
{
if(!s->renderer_cache)
return MS_SUCCESS;
switch(s->type) {
case MS_SYMBOL_VECTOR:
cairo_path_destroy(s->renderer_cache);
break;
case MS_SYMBOL_PIXMAP:
cairo_surface_destroy(s->renderer_cache);
break;
case MS_SYMBOL_SVG:
freeSVGCache(s);
break;
}
s->renderer_cache=NULL;
return MS_SUCCESS;
}
int initializeRasterBufferCairo(rasterBufferObj *rb, int width, int height, int mode)
{
rb->type = MS_BUFFER_BYTE_RGBA;
rb->width = width;
rb->height = height;
rb->data.rgba.pixel_step = 4;
rb->data.rgba.row_step = width * 4;
rb->data.rgba.pixels = (unsigned char*)calloc(width*height*4,sizeof(unsigned char));
rb->data.rgba.r = &(rb->data.rgba.pixels[2]);
rb->data.rgba.g = &(rb->data.rgba.pixels[1]);
rb->data.rgba.b = &(rb->data.rgba.pixels[0]);
rb->data.rgba.a = &(rb->data.rgba.pixels[3]);
return MS_SUCCESS;
}
int msPreloadSVGSymbol(symbolObj *symbol)
{
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache *cache;
if(!symbol->renderer_cache) {
cache = msSmallCalloc(1,sizeof(struct svg_symbol_cache));
symbol->renderer_free_func = &freeSVGCache;
} else {
cache = symbol->renderer_cache;
}
if(cache->svgc)
return MS_SUCCESS;
#ifdef USE_SVG_CAIRO
{
unsigned int svg_width, svg_height;
int status;
status = svg_cairo_create(&cache->svgc);
if (status) {
msSetError(MS_RENDERERERR, "problem creating cairo svg", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
status = svg_cairo_parse(cache->svgc, symbol->full_pixmap_path);
if (status) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
svg_cairo_get_size (cache->svgc, &svg_width, &svg_height);
if (svg_width == 0 || svg_height == 0) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
symbol->sizex = svg_width;
symbol->sizey = svg_height;
}
#else
{
RsvgDimensionData dim;
cache->svgc = rsvg_handle_new_from_file(symbol->full_pixmap_path,NULL);
if(!cache->svgc) {
msSetError(MS_RENDERERERR,"failed to load svg file %s", "msPreloadSVGSymbol()", symbol->full_pixmap_path);
return MS_FAILURE;
}
rsvg_handle_get_dimensions_sub (cache->svgc, &dim, NULL);