/
image.cpp
1396 lines (1170 loc) · 34.3 KB
/
image.cpp
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
/*
Copyright (C) 2003 - 2018 by David White <dave@whitevine.net>
Part of the Battle for Wesnoth Project http://www.wesnoth.org/
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY.
See the COPYING file for more details.
*/
/**
* @file
* Routines for images: load, scale, re-color, etc.
*/
#define GETTEXT_DOMAIN "wesnoth-lib"
#include "image.hpp"
#include "config.hpp"
#include "display.hpp"
#include "filesystem.hpp"
#include "game_config.hpp"
#include "gettext.hpp"
#include "image_modifications.hpp"
#include "log.hpp"
#include "preferences/general.hpp"
#include "serialization/base64.hpp"
#include "serialization/string_utils.hpp"
#include "sdl/rect.hpp"
#include "sdl/texture.hpp"
#include "utils/general.hpp"
#include <SDL_image.h>
#include "utils/functional.hpp"
#include <boost/algorithm/string.hpp>
#include <boost/functional/hash_fwd.hpp>
#include <set>
static lg::log_domain log_display("display");
#define ERR_DP LOG_STREAM(err, log_display)
#define LOG_DP LOG_STREAM(info, log_display)
static lg::log_domain log_config("config");
#define ERR_CFG LOG_STREAM(err, log_config)
using game_config::tile_size;
template<typename T>
struct cache_item
{
cache_item()
: item()
, loaded(false)
{
}
cache_item(const T& item)
: item(item)
, loaded(true)
{
}
T item;
bool loaded;
};
namespace std
{
template<>
struct hash<image::locator::value>
{
size_t operator()(const image::locator::value& val) const
{
size_t hash = std::hash<unsigned>{}(val.type_);
if(val.type_ == image::locator::FILE || val.type_ == image::locator::SUB_FILE) {
boost::hash_combine(hash, val.filename_);
}
if(val.type_ == image::locator::SUB_FILE) {
boost::hash_combine(hash, val.loc_.x);
boost::hash_combine(hash, val.loc_.y);
boost::hash_combine(hash, val.center_x_);
boost::hash_combine(hash, val.center_y_);
boost::hash_combine(hash, val.modifications_);
}
return hash;
}
};
}
namespace image
{
template<typename T>
class cache_type
{
public:
cache_type()
: content_()
{
}
cache_item<T>& get_element(int index)
{
if(static_cast<unsigned>(index) >= content_.size())
content_.resize(index + 1);
return content_[index];
}
void flush()
{
content_.clear();
}
private:
std::vector<cache_item<T>> content_;
};
template<typename T>
bool locator::in_cache(cache_type<T>& cache) const
{
return index_ < 0 ? false : cache.get_element(index_).loaded;
}
template<typename T>
const T& locator::locate_in_cache(cache_type<T>& cache) const
{
static T dummy;
return index_ < 0 ? dummy : cache.get_element(index_).item;
}
template<typename T>
T& locator::access_in_cache(cache_type<T>& cache) const
{
static T dummy;
return index_ < 0 ? dummy : cache.get_element(index_).item;
}
template<typename T>
void locator::add_to_cache(cache_type<T>& cache, const T& data) const
{
if(index_ >= 0) {
cache.get_element(index_) = cache_item<T>(data);
}
}
}
namespace
{
image::locator::locator_finder_t locator_finder;
/** Definition of all image maps */
image::image_cache images_, scaled_to_zoom_, hexed_images_, scaled_to_hex_images_, tod_colored_images_,
brightened_images_;
image::texture_cache textures_;
// cache storing if each image fit in a hex
image::bool_cache in_hex_info_;
// cache storing if this is an empty hex
image::bool_cache is_empty_hex_;
// caches storing the different lighted cases for each image
image::lit_cache lit_images_, lit_scaled_images_;
// caches storing each lightmap generated
image::lit_variants lightmaps_;
// const int cache_version_ = 0;
std::map<std::string, bool> image_existence_map;
// directories where we already cached file existence
std::set<std::string> precached_dirs;
std::map<surface, surface> reversed_images_;
int red_adjust = 0, green_adjust = 0, blue_adjust = 0;
/** List of colors used by the TC image modification */
std::vector<std::string> team_colors;
unsigned int zoom = tile_size;
unsigned int cached_zoom = 0;
/** Algorithm choices */
// typedef std::function<surface(const surface &, int, int)> scaling_function;
typedef surface (*scaling_function)(const surface&, int, int);
scaling_function scale_to_zoom_func;
scaling_function scale_to_hex_func;
const std::string data_uri_prefix = "data:";
struct parsed_data_URI{
explicit parsed_data_URI(utils::string_view data_URI);
utils::string_view scheme;
utils::string_view mime;
utils::string_view base64;
utils::string_view data;
bool good;
};
parsed_data_URI::parsed_data_URI(utils::string_view data_URI)
{
const size_t colon = data_URI.find(':');
const utils::string_view after_scheme = data_URI.substr(colon + 1);
const size_t comma = after_scheme.find(',');
const utils::string_view type_info = after_scheme.substr(0, comma);
const size_t semicolon = type_info.find(';');
scheme = data_URI.substr(0, colon);
base64 = type_info.substr(semicolon + 1);
mime = type_info.substr(0, semicolon);
data = after_scheme.substr(comma + 1);
good = (scheme == "data" && base64 == "base64" && mime.length() > 0 && data.length() > 0);
}
} // end anon namespace
namespace image
{
mini_terrain_cache_map mini_terrain_cache;
mini_terrain_cache_map mini_fogged_terrain_cache;
mini_terrain_cache_map mini_highlighted_terrain_cache;
static int last_index_ = 0;
void flush_cache()
{
#ifdef _OPENMP
#pragma omp critical(image_cache)
#endif //_OPENMP
{
images_.flush();
hexed_images_.flush();
tod_colored_images_.flush();
scaled_to_zoom_.flush();
scaled_to_hex_images_.flush();
brightened_images_.flush();
lit_images_.flush();
lit_scaled_images_.flush();
in_hex_info_.flush();
is_empty_hex_.flush();
mini_terrain_cache.clear();
mini_fogged_terrain_cache.clear();
mini_highlighted_terrain_cache.clear();
reversed_images_.clear();
image_existence_map.clear();
precached_dirs.clear();
}
/* We can't reset last_index_, since some locators are still alive
when using :refresh. That would cause them to point to the wrong
images. Not resetting the variable causes a memory leak, though. */
// last_index_ = 0;
}
void locator::init_index()
{
auto i = locator_finder.find(val_);
if(i == locator_finder.end()) {
index_ = last_index_++;
locator_finder.emplace(val_, index_);
} else {
index_ = i->second;
}
}
void locator::parse_arguments()
{
std::string& fn = val_.filename_;
if(fn.empty()) {
return;
}
if(boost::algorithm::starts_with(fn, data_uri_prefix)) {
parsed_data_URI parsed{fn};
if(!parsed.good) {
utils::string_view view{ fn };
utils::string_view stripped = view.substr(0, view.find(","));
ERR_DP << "Invalid data URI: " << stripped << std::endl;
}
val_.is_data_uri_ = true;
}
size_t markup_field = fn.find('~');
if(markup_field != std::string::npos) {
val_.type_ = SUB_FILE;
val_.modifications_ = fn.substr(markup_field, fn.size() - markup_field);
fn = fn.substr(0, markup_field);
}
}
locator::locator()
: index_(-1)
, val_()
{
}
locator::locator(const locator& a, const std::string& mods)
: index_(-1)
, val_(a.val_)
{
if(!mods.empty()) {
val_.modifications_ += mods;
val_.type_ = SUB_FILE;
init_index();
} else {
index_ = a.index_;
}
}
locator::locator(const char* filename)
: index_(-1)
, val_(filename)
{
parse_arguments();
init_index();
}
locator::locator(const std::string& filename)
: index_(-1)
, val_(filename)
{
parse_arguments();
init_index();
}
locator::locator(const std::string& filename, const std::string& modifications)
: index_(-1)
, val_(filename, modifications)
{
init_index();
}
locator::locator(const std::string& filename,
const map_location& loc,
int center_x,
int center_y,
const std::string& modifications)
: index_(-1)
, val_(filename, loc, center_x, center_y, modifications)
{
init_index();
}
locator& locator::operator=(const locator& a)
{
index_ = a.index_;
val_ = a.val_;
return *this;
}
locator::value::value(const locator::value& a)
: type_(a.type_)
, is_data_uri_(a.is_data_uri_)
, filename_(a.filename_)
, loc_(a.loc_)
, modifications_(a.modifications_)
, center_x_(a.center_x_)
, center_y_(a.center_y_)
{
}
locator::value::value()
: type_(NONE)
, is_data_uri_(false)
, filename_()
, loc_()
, modifications_()
, center_x_(0)
, center_y_(0)
{
}
locator::value::value(const char* filename)
: type_(FILE)
, is_data_uri_(false)
, filename_(filename)
, loc_()
, modifications_()
, center_x_(0)
, center_y_(0)
{
}
locator::value::value(const std::string& filename)
: type_(FILE)
, is_data_uri_(false)
, filename_(filename)
, loc_()
, modifications_()
, center_x_(0)
, center_y_(0)
{
}
locator::value::value(const std::string& filename, const std::string& modifications)
: type_(SUB_FILE)
, is_data_uri_(false)
, filename_(filename)
, loc_()
, modifications_(modifications)
, center_x_(0)
, center_y_(0)
{
}
locator::value::value(const std::string& filename,
const map_location& loc,
int center_x,
int center_y,
const std::string& modifications)
: type_(SUB_FILE)
, is_data_uri_(false)
, filename_(filename)
, loc_(loc)
, modifications_(modifications)
, center_x_(center_x)
, center_y_(center_y)
{
}
bool locator::value::operator==(const value& a) const
{
if(a.type_ != type_) {
return false;
} else if(type_ == FILE) {
return filename_ == a.filename_;
} else if(type_ == SUB_FILE) {
return filename_ == a.filename_ && loc_ == a.loc_ && modifications_ == a.modifications_
&& center_x_ == a.center_x_ && center_y_ == a.center_y_;
}
return false;
}
bool locator::value::operator<(const value& a) const
{
if(type_ != a.type_) {
return type_ < a.type_;
} else if(type_ == FILE) {
return filename_ < a.filename_;
} else if(type_ == SUB_FILE) {
if(filename_ != a.filename_)
return filename_ < a.filename_;
if(loc_ != a.loc_)
return loc_ < a.loc_;
if(center_x_ != a.center_x_)
return center_x_ < a.center_x_;
if(center_y_ != a.center_y_)
return center_y_ < a.center_y_;
return (modifications_ < a.modifications_);
}
return false;
}
// Check if localized file is up-to-date according to l10n track index.
// Make sure only that the image is not explicitly recorded as fuzzy,
// in order to be able to use non-tracked images (e.g. from UMC).
static std::set<std::string> fuzzy_localized_files;
static bool localized_file_uptodate(const std::string& loc_file)
{
if(fuzzy_localized_files.empty()) {
// First call, parse track index to collect fuzzy files by path.
std::string fsep = "\xC2\xA6"; // UTF-8 for "broken bar"
std::string trackpath = filesystem::get_binary_file_location("", "l10n-track");
std::string contents = filesystem::read_file(trackpath);
for(const std::string& line : utils::split(contents, '\n')) {
size_t p1 = line.find(fsep);
if(p1 == std::string::npos) {
continue;
}
std::string state = line.substr(0, p1);
boost::trim(state);
if(state == "fuzzy") {
size_t p2 = line.find(fsep, p1 + fsep.length());
if(p2 == std::string::npos) {
continue;
}
std::string relpath = line.substr(p1 + fsep.length(), p2 - p1 - fsep.length());
fuzzy_localized_files.insert(game_config::path + '/' + relpath);
}
}
fuzzy_localized_files.insert(""); // make sure not empty any more
}
return fuzzy_localized_files.count(loc_file) == 0;
}
// Return path to localized counterpart of the given file, if any, or empty string.
// Localized counterpart may also be requested to have a suffix to base name.
static std::string get_localized_path(const std::string& file, const std::string& suff = "")
{
std::string dir = filesystem::directory_name(file);
std::string base = filesystem::base_name(file);
const size_t pos_ext = base.rfind(".");
std::string loc_base;
if(pos_ext != std::string::npos) {
loc_base = base.substr(0, pos_ext) + suff + base.substr(pos_ext);
} else {
loc_base = base + suff;
}
// TRANSLATORS: This is the language code which will be used
// to store and fetch localized non-textual resources, such as images,
// when they exist. Normally it is just the code of the PO file itself,
// e.g. "de" of de.po for German. But it can also be a comma-separated
// list of language codes by priority, when the localized resource
// found for first of those languages will be used. This is useful when
// two languages share sufficient commonality, that they can use each
// other's resources rather than duplicating them. For example,
// Swedish (sv) and Danish (da) are such, so Swedish translator could
// translate this message as "sv,da", while Danish as "da,sv".
std::vector<std::string> langs = utils::split(_("language code for localized resources^en_US"));
// In case even the original image is split into base and overlay,
// add en_US with lowest priority, since the message above will
// not have it when translated.
langs.push_back("en_US");
for(const std::string& lang : langs) {
std::string loc_file = dir + "/" + "l10n" + "/" + lang + "/" + loc_base;
if(filesystem::file_exists(loc_file) && localized_file_uptodate(loc_file)) {
return loc_file;
}
}
return "";
}
// Ensure PNG images with an indexed palette are converted to 32-bit RGBA.
// The format used is really ARGB8888, but same difference.
// TODO: should this be moved to sdl/utils.*pp?
static void discard_indexed_palette(surface& surf)
{
if(!surf.null() && SDL_ISPIXELFORMAT_INDEXED(surf->format->format) == SDL_TRUE) {
surf = make_neutral_surface(surf);
assert(SDL_ISPIXELFORMAT_INDEXED(surf->format->format) == SDL_FALSE);
}
}
// Load overlay image and compose it with the original surface.
static void add_localized_overlay(const std::string& ovr_file, surface& orig_surf)
{
filesystem::rwops_ptr rwops = filesystem::make_read_RWops(ovr_file);
surface ovr_surf = IMG_Load_RW(rwops.release(), true); // SDL takes ownership of rwops
if(ovr_surf.null()) {
return;
}
discard_indexed_palette(ovr_surf);
SDL_Rect area {0, 0, ovr_surf->w, ovr_surf->h};
sdl_blit(ovr_surf, 0, orig_surf, &area);
}
static surface load_image_file(const image::locator& loc)
{
surface res;
std::string location = filesystem::get_binary_file_location("images", loc.get_filename());
{
if(!location.empty()) {
// Check if there is a localized image.
const std::string loc_location = get_localized_path(location);
if(!loc_location.empty()) {
location = loc_location;
}
filesystem::rwops_ptr rwops = filesystem::make_read_RWops(location);
res = IMG_Load_RW(rwops.release(), true); // SDL takes ownership of rwops
discard_indexed_palette(res);
// If there was no standalone localized image, check if there is an overlay.
if(!res.null() && loc_location.empty()) {
const std::string ovr_location = get_localized_path(location, "--overlay");
if(!ovr_location.empty()) {
add_localized_overlay(ovr_location, res);
}
}
}
}
if(res.null() && !loc.get_filename().empty()) {
ERR_DP << "could not open image '" << loc.get_filename() << "'" << std::endl;
if(game_config::debug && loc.get_filename() != game_config::images::missing)
return get_image(game_config::images::missing, UNSCALED);
}
return res;
}
static surface load_image_sub_file(const image::locator& loc)
{
surface surf = get_image(loc.get_filename(), UNSCALED);
if(surf == nullptr) {
return nullptr;
}
modification_queue mods = modification::decode(loc.get_modifications());
while(!mods.empty()) {
modification* mod = mods.top();
try {
surf = (*mod)(surf);
} catch(const image::modification::imod_exception& e) {
ERR_CFG << "Failed to apply a modification to an image:\n"
<< "Image: " << loc.get_filename() << ".\n"
<< "Modifications: " << loc.get_modifications() << ".\n"
<< "Error: " << e.message;
}
// NOTE: do this *after* applying the mod or you'll get crashes!
mods.pop();
}
if(loc.get_loc().valid()) {
SDL_Rect srcrect = sdl::create_rect(
((tile_size * 3) / 4) * loc.get_loc().x,
tile_size * loc.get_loc().y + (tile_size / 2) * (loc.get_loc().x % 2),
tile_size,
tile_size
);
if(loc.get_center_x() >= 0 && loc.get_center_y() >= 0) {
srcrect.x += surf->w / 2 - loc.get_center_x();
srcrect.y += surf->h / 2 - loc.get_center_y();
}
// cut and hex mask, but also check and cache if empty result
surface cut(cut_surface(surf, srcrect));
bool is_empty = false;
surf = mask_surface(cut, get_hexmask(), &is_empty);
// discard empty images to free memory
if(is_empty) {
// Safe because those images are only used by terrain rendering
// and it filters them out.
// A safer and more general way would be to keep only one copy of it
surf = nullptr;
}
loc.add_to_cache(is_empty_hex_, is_empty);
}
return surf;
}
static surface load_image_data_uri(const image::locator& loc)
{
surface surf;
parsed_data_URI parsed{loc.get_filename()};
if(!parsed.good) {
utils::string_view fn = loc.get_filename();
utils::string_view stripped = fn.substr(0, fn.find(","));
ERR_DP << "Invalid data URI: " << stripped << std::endl;
} else if(parsed.mime.substr(0, 5) != "image") {
ERR_DP << "Data URI not of image MIME type: " << parsed.mime << std::endl;
} else {
const std::vector<uint8_t> image_data = base64::decode(parsed.data);
filesystem::rwops_ptr rwops{SDL_RWFromConstMem(image_data.data(), image_data.size()), &SDL_FreeRW};
if(parsed.mime == "image/png") {
surf = IMG_LoadTyped_RW(rwops.release(), true, "PNG");
} else if(parsed.mime == "image/jpeg") {
surf = IMG_LoadTyped_RW(rwops.release(), true, "JPG");
} else {
ERR_DP << "Invalid image MIME type: " << parsed.mime << std::endl;
}
}
return surf;
}
// small utility function to store an int from (-256,254) to an signed char
static signed char col_to_uchar(int i)
{
return static_cast<signed char>(std::min<int>(127, std::max<int>(-128, i / 2)));
}
light_string get_light_string(int op, int r, int g, int b)
{
light_string ls;
ls.reserve(4);
ls.push_back(op);
ls.push_back(col_to_uchar(r));
ls.push_back(col_to_uchar(g));
ls.push_back(col_to_uchar(b));
return ls;
}
static surface apply_light(surface surf, const light_string& ls)
{
// atomic lightmap operation are handled directly (important to end recursion)
if(ls.size() == 4) {
// if no lightmap (first char = -1) then we need the initial value
//(before the halving done for lightmap)
int m = ls[0] == -1 ? 2 : 1;
return adjust_surface_color(surf, ls[1] * m, ls[2] * m, ls[3] * m);
}
// check if the lightmap is already cached or need to be generated
surface lightmap = nullptr;
auto i = lightmaps_.find(ls);
if(i != lightmaps_.end()) {
lightmap = i->second;
} else {
// build all the paths for lightmap sources
static const std::string p = "terrain/light/light";
static const std::string lm_img[19] {
p + ".png",
p + "-concave-2-tr.png", p + "-concave-2-r.png", p + "-concave-2-br.png",
p + "-concave-2-bl.png", p + "-concave-2-l.png", p + "-concave-2-tl.png",
p + "-convex-br-bl.png", p + "-convex-bl-l.png", p + "-convex-l-tl.png",
p + "-convex-tl-tr.png", p + "-convex-tr-r.png", p + "-convex-r-br.png",
p + "-convex-l-bl.png", p + "-convex-tl-l.png", p + "-convex-tr-tl.png",
p + "-convex-r-tr.png", p + "-convex-br-r.png", p + "-convex-bl-br.png"
};
// decompose into atomic lightmap operations (4 chars)
for(size_t c = 0; c + 3 < ls.size(); c += 4) {
light_string sls = ls.substr(c, 4);
// get the corresponding image and apply the lightmap operation to it
// This allows to also cache lightmap parts.
// note that we avoid infinite recursion by using only atomic operation
surface lts = image::get_lighted_image(lm_img[sls[0]], sls, HEXED);
// first image will be the base where we blit the others
if(lightmap == nullptr) {
// copy the cached image to avoid modifying the cache
lightmap = make_neutral_surface(lts);
} else {
sdl_blit(lts, nullptr, lightmap, nullptr);
}
}
// cache the result
lightmaps_[ls] = lightmap;
}
// apply the final lightmap
return light_surface(surf, lightmap);
}
bool locator::file_exists() const
{
return val_.is_data_uri_
? parsed_data_URI{val_.filename_}.good
: !filesystem::get_binary_file_location("images", val_.filename_).empty();
}
surface load_from_disk(const locator& loc)
{
switch(loc.get_type()) {
case locator::FILE:
if(loc.is_data_uri()){
return load_image_data_uri(loc);
} else {
return load_image_file(loc);
}
case locator::SUB_FILE:
return load_image_sub_file(loc);
default:
return surface(nullptr);
}
}
manager::manager()
{
}
manager::~manager()
{
flush_cache();
}
static SDL_PixelFormat last_pixel_format;
void set_pixel_format(SDL_PixelFormat* format)
{
assert(format != nullptr);
SDL_PixelFormat& f = *format;
SDL_PixelFormat& l = last_pixel_format;
// if the pixel format change, we clear the cache,
// because some images are now optimized for the wrong display format
// FIXME: 8 bpp use palette, need to compare them. For now assume a change
if(format->BitsPerPixel == 8
|| f.BitsPerPixel != l.BitsPerPixel
|| f.BytesPerPixel != l.BytesPerPixel
|| f.Rmask != l.Rmask
|| f.Gmask != l.Gmask
|| f.Bmask != l.Bmask
// || f.Amask != l.Amask This field in not checked, not sure why.
|| f.Rloss != l.Rloss
|| f.Gloss != l.Gloss
|| f.Bloss != l.Bloss
// || f.Aloss != l.Aloss This field in not checked, not sure why.
|| f.Rshift != l.Rshift
|| f.Gshift != l.Gshift
|| f.Bshift != l.Bshift
// || f.Ashift != l.Ashift This field in not checked, not sure why.
)
{
LOG_DP << "detected a new display format\n";
flush_cache();
}
last_pixel_format = *format;
}
void set_color_adjustment(int r, int g, int b)
{
if(r != red_adjust || g != green_adjust || b != blue_adjust) {
red_adjust = r;
green_adjust = g;
blue_adjust = b;
tod_colored_images_.flush();
brightened_images_.flush();
lit_images_.flush();
lit_scaled_images_.flush();
reversed_images_.clear();
}
}
void set_team_colors(const std::vector<std::string>* colors)
{
if(colors == nullptr) {
team_colors.clear();
} else {
team_colors = *colors;
}
}
const std::vector<std::string>& get_team_colors()
{
return team_colors;
}
void set_zoom(unsigned int amount)
{
if(amount != zoom) {
zoom = amount;
tod_colored_images_.flush();
brightened_images_.flush();
reversed_images_.clear();
// We keep these caches if:
// we use default zoom (it doesn't need those)
// or if they are already at the wanted zoom.
if(zoom != tile_size && zoom != cached_zoom) {
scaled_to_zoom_.flush();
scaled_to_hex_images_.flush();
lit_scaled_images_.flush();
cached_zoom = zoom;
}
}
}
// F should be a scaling algorithm without "integral" zoom limitations
template<scaling_function F>
static surface scale_xbrz_helper(const surface& res, int w, int h)
{
int best_integer_zoom = std::min(w / res->w, h / res->h);
int legal_zoom = utils::clamp(best_integer_zoom, 1, 5);
return F(scale_surface_xbrz(res, legal_zoom), w, h);
}
using SCALING_ALGORITHM = preferences::SCALING_ALGORITHM;
static scaling_function select_algorithm(SCALING_ALGORITHM algo)
{
switch(algo.v) {
case SCALING_ALGORITHM::LINEAR: {
scaling_function result = &scale_surface;
return result;
}
case SCALING_ALGORITHM::NEAREST_NEIGHBOR: {
scaling_function result = &scale_surface_nn;
return result;
}
case SCALING_ALGORITHM::XBRZ_LIN: {
scaling_function result = &scale_xbrz_helper<scale_surface>;
return result;
}
case SCALING_ALGORITHM::XBRZ_NN: {
scaling_function result = &scale_xbrz_helper<scale_surface_nn>;
return result;
}
default:
assert(false && "I don't know how to implement this scaling algorithm");
throw 42;
}
}
static surface get_hexed(const locator& i_locator)
{
surface image(get_image(i_locator, UNSCALED));
// hex cut tiles, also check and cache if empty result
bool is_empty = false;
surface res = mask_surface(image, get_hexmask(), &is_empty, i_locator.get_filename());
i_locator.add_to_cache(is_empty_hex_, is_empty);
return res;
}
static surface get_scaled_to_hex(const locator& i_locator)
{
surface img = get_image(i_locator, HEXED);
// return scale_surface(img, zoom, zoom);
if(!img.null()) {
return scale_to_hex_func(img, zoom, zoom);
}
return surface(nullptr);
}
static surface get_tod_colored(const locator& i_locator)
{
surface img = get_image(i_locator, SCALED_TO_HEX);
return adjust_surface_color(img, red_adjust, green_adjust, blue_adjust);
}
static surface get_scaled_to_zoom(const locator& i_locator)
{
assert(zoom != tile_size);
assert(tile_size != 0);
surface res(get_image(i_locator, UNSCALED));
// For some reason haloes seems to have invalid images, protect against crashing
if(!res.null()) {
return scale_to_zoom_func(res, ((res->w * zoom) / tile_size), ((res->h * zoom) / tile_size));
}
return surface(nullptr);
}
static surface get_brightened(const locator& i_locator)
{
surface image(get_image(i_locator, TOD_COLORED));
return brighten_image(image, ftofxp(game_config::hex_brightening));
}
/// translate type to a simpler one when possible
static TYPE simplify_type(const image::locator& i_locator, TYPE type)
{
switch(type) {
case SCALED_TO_ZOOM:
if(zoom == tile_size) {
type = UNSCALED;
}
break;
case BRIGHTENED:
if(ftofxp(game_config::hex_brightening) == ftofxp(1.0)) {
type = TOD_COLORED;
}
break;
default:
break;
}
if(type == TOD_COLORED) {
if(red_adjust == 0 && green_adjust == 0 && blue_adjust == 0) {
type = SCALED_TO_HEX;
}
}
if(type == SCALED_TO_HEX) {
if(zoom == tile_size) {