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This commit introduces a serialisation format for the user preferences stored in game_ui, using the keyword identifiers that get_prefs is required to write into its list of config_item. As a result, the serialisation format looks enough like an ordinary config file that a user could write one by hand. The preferences for the game backend are kept in serialised form in me->be_prefs. The typical use of this is to apply it to a just-created game_ui by calling midend_apply_prefs(), which deserialises the prefs buffer into a list of config_item and passes it to the backend's set_prefs function, overwriting the preference fields (but no others) of the game_ui. This is duly done when creating a new game, when loading a game from a save file, and also when printing a puzzle. To make the latter work, document_add_puzzle now takes a game_ui (and keeps ownership of it afterwards), and passes that to the backend's compute_size and print functions. The backend's own get_prefs and set_prefs functions are wrapped by midend_get_prefs and midend_set_prefs. This is partly as a convenience (it deals with optionally constructing a game_ui specially to call the backend with), but mostly so that there will be a convenient place in the midend to add standard preferences applying across all puzzles. No cross-puzzle preferences are provided yet. There are two external interfaces to all this, and in this commit, neither one is yet called by any frontend: A new pair of midend functions is exposed to the front end, called midend_load_prefs and midend_save_prefs. These have a similar API to midend_serialise and midend_deserialise, taking a read/write function pointer and a context. So front ends that can already load/save a game to a file on disk should find it easy to add a similar set of functions loading/saving user preferences. Secondly, a new value CFG_PREFS is added to the enumeration of configuration dialog types, alongside the ones for the Custom game type, entering a game description and entering a random seed. This should make it easy for frontends to offer a Preferences dialog, because it will operate almost exactly like three dialogs they already handle.
80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/*
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* nullfe.c: Null front-end code containing a bunch of boring stub
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* functions. Used to ensure successful linking when building the
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* various stand-alone solver binaries.
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*/
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#include <stdarg.h>
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#include "puzzles.h"
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void frontend_default_colour(frontend *fe, float *output) {}
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void get_random_seed(void **randseed, int *randseedsize)
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{ char *c = snewn(1, char); *c = 0; *randseed = c; *randseedsize = 1; }
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void deactivate_timer(frontend *fe) {}
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void activate_timer(frontend *fe) {}
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struct drawing { char dummy; };
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drawing *drawing_new(const drawing_api *api, midend *me, void *handle)
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{ return snew(drawing); }
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void drawing_free(drawing *dr) { sfree(dr); }
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void draw_text(drawing *dr, int x, int y, int fonttype, int fontsize,
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int align, int colour, const char *text) {}
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void draw_rect(drawing *dr, int x, int y, int w, int h, int colour) {}
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void draw_line(drawing *dr, int x1, int y1, int x2, int y2, int colour) {}
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void draw_thick_line(drawing *dr, float thickness,
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float x1, float y1, float x2, float y2, int colour) {}
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void draw_polygon(drawing *dr, const int *coords, int npoints,
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int fillcolour, int outlinecolour) {}
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void draw_circle(drawing *dr, int cx, int cy, int radius,
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int fillcolour, int outlinecolour) {}
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char *text_fallback(drawing *dr, const char *const *strings, int nstrings)
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{ return dupstr(strings[0]); }
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void clip(drawing *dr, int x, int y, int w, int h) {}
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void unclip(drawing *dr) {}
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void start_draw(drawing *dr) {}
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void draw_update(drawing *dr, int x, int y, int w, int h) {}
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void end_draw(drawing *dr) {}
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struct blitter { char dummy; };
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blitter *blitter_new(drawing *dr, int w, int h) { return snew(blitter); }
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void blitter_free(drawing *dr, blitter *bl) { sfree(bl); }
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void blitter_save(drawing *dr, blitter *bl, int x, int y) {}
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void blitter_load(drawing *dr, blitter *bl, int x, int y) {}
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int print_mono_colour(drawing *dr, int grey) { return 0; }
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int print_grey_colour(drawing *dr, float grey) { return 0; }
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int print_hatched_colour(drawing *dr, int hatch) { return 0; }
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int print_rgb_mono_colour(drawing *dr, float r, float g, float b, int grey)
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{ return 0; }
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int print_rgb_grey_colour(drawing *dr, float r, float g, float b, float grey)
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{ return 0; }
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int print_rgb_hatched_colour(drawing *dr, float r, float g, float b, int hatch)
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{ return 0; }
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void print_line_width(drawing *dr, int width) {}
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void print_line_dotted(drawing *dr, bool dotted) {}
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void status_bar(drawing *dr, const char *text) {}
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void document_add_puzzle(document *doc, const game *game, game_params *par,
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game_ui *ui, game_state *st, game_state *st2) {}
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void fatal(const char *fmt, ...)
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{
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va_list ap;
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fprintf(stderr, "fatal error: ");
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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exit(1);
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}
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#ifdef DEBUGGING
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void debug_printf(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stdout, fmt, ap);
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va_end(ap);
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}
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#endif
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