2 * Hic Est Leo -- Styling
4 * (c) 2014 Martin Mares <mj@ucw.cz>
8 #include <ucw/mempool.h>
16 struct dict style_prop_dict, style_layer_dict;
18 static const char * const style_wk_props[] = {
20 #define P(x,y) [PROP_##x] = y,
21 #include "dict-props.h"
26 static const char * const style_wk_layers[] = {
32 void styles_init(void)
34 dict_init(&style_prop_dict, style_wk_props);
35 dict_init(&style_layer_dict, style_wk_layers);
38 #define HASH_NODE struct style_prop
39 #define HASH_PREFIX(x) style_prop_##x
40 #define HASH_KEY_ATOMIC key
41 #define HASH_WANT_FIND
42 #define HASH_WANT_LOOKUP
43 #define HASH_GIVE_ALLOC
44 // FIXME: Make <ucw/hashtable.h> accept our pool
45 #define HASH_ZERO_FILL
46 #define HASH_TABLE_DYNAMIC
47 #define HASH_TABLE_ALLOC
48 #define HASH_TABLE_VARS struct mempool *pool;
49 static void *style_prop_alloc(struct style_prop_table *table, uns size);
50 static inline void style_prop_free(struct style_prop_table *table UNUSED, void *x UNUSED) { }
51 #include <ucw/hashtable.h>
53 static void *style_prop_alloc(struct style_prop_table *table, uns size)
55 return mp_alloc_fast(table->pool, size);
58 void style_init(struct style_results *r)
60 r->pool = mp_new(4096);
61 r->num_layers = dict_size(&style_layer_dict);
62 r->layers = mp_alloc_zero(r->pool, r->num_layers * sizeof(struct style_info *));
63 r->num_active_layers = 0;
64 r->active_layers = mp_alloc_zero(r->pool, r->num_layers * sizeof(layer_t));
67 void style_begin(struct style_results *r, struct osm_object *o)
69 ASSERT(!r->num_active_layers);
74 void style_end(struct style_results *r)
76 for (uns i=0; i<r->num_active_layers; i++)
77 r->layers[r->active_layers[i]] = NULL;
79 r->num_active_layers = 0;
83 static inline void style_assign(struct style_prop *dest, struct style_prop *src)
85 dest->type = src->type;
89 static struct style_info *style_get_info(struct style_results *r, layer_t layer)
91 ASSERT(layer < r->num_layers);
92 if (!r->layers[layer])
94 struct style_info *si = mp_alloc_zero(r->pool, sizeof(*si));
95 r->layers[layer] = si;
96 si->hash = mp_alloc_zero(r->pool, sizeof(struct style_prop_table));
97 si->hash->pool = r->pool;
98 style_prop_init(si->hash);
100 if (layer != STYLE_LAYER_ALL)
102 r->active_layers[r->num_active_layers++] = layer;
104 // Copy all properties which have been set for all layers
105 struct style_info *si_all = r->layers[STYLE_LAYER_ALL];
109 * CAVEAT: This is probably wrong. When no properties are set explicitly
110 * set for a layer, all-layer properties are not propagated. Hopefully harmless.
112 HASH_FOR_ALL_DYNAMIC(style_prop, si_all->hash, s)
114 style_assign(style_prop_lookup(si->hash, s->key), s);
120 return r->layers[layer];
123 void style_set_by_layer(struct style_results *r, layer_t layer, struct style_prop *p)
125 if (layer == STYLE_LAYER_ALL)
127 // Set in all existing layers
128 for (uns i=0; i < r->num_active_layers; i++)
129 style_assign(style_prop_lookup(r->layers[r->active_layers[i]]->hash, p->key), p);
130 // ... and let it propagate to STYLE_LAYER_ALL
133 struct style_info *si = style_get_info(r, layer);
134 style_assign(style_prop_lookup(si->hash, p->key), p);
137 void style_set(struct style_info *si, struct style_prop *p)
139 style_assign(style_prop_lookup(si->hash, p->key), p);
142 struct style_prop *style_get(struct style_info *si, prop_t key)
144 return style_prop_find(si->hash, key);
147 struct style_prop *style_get_and_check(struct style_info *si, prop_t key, uns allowed_types)
149 struct style_prop *p = style_prop_find(si->hash, key);
152 if (!(allowed_types & (1 << p->type)))
154 // XXX: Better diagnostics?
155 msg(L_WARN, "Style property %s set to invalid type #%u", style_prop_decode(p->key), p->type);
161 osm_val_t style_get_ident(struct style_info *si, prop_t key)
163 struct style_prop *p = style_get_and_check(si, key, 1 << PROP_TYPE_IDENT);
164 return p ? p->val.id : 0;
167 osm_val_t style_get_string(struct style_info *si, prop_t key)
169 struct style_prop *p = style_get_and_check(si, key, (1 << PROP_TYPE_STRING) | (1 << PROP_TYPE_IDENT));
170 return p ? p->val.id : 0;
173 bool style_get_number(struct style_info *si, prop_t key, double *dp)
175 struct style_prop *p = style_get_and_check(si, key, 1 << PROP_TYPE_NUMBER);
182 bool style_get_color(struct style_info *si, prop_t key, color_t *colorp)
184 struct style_prop *p = style_get_and_check(si, key, 1 << PROP_TYPE_COLOR);
187 *colorp = p->val.color;
191 void style_dump(struct style_results *r)
193 for (uns i=0; i < r->num_active_layers; i++)
195 layer_t layer = r->active_layers[i];
196 printf("Layer %s (%u)\n", style_layer_decode(layer), layer);
197 struct style_info *si = r->layers[layer];
198 HASH_FOR_ALL_DYNAMIC(style_prop, si->hash, s)
207 static void style_dump_val(struct style_prop *s)
213 case PROP_TYPE_STRING:
214 printf("%s [string]", osm_val_decode(s->val.id));
216 case PROP_TYPE_IDENT:
217 printf("%s [ident]", osm_val_decode(s->val.id));
219 case PROP_TYPE_NUMBER:
220 printf("%.6g [number]", s->val.number);
222 case PROP_TYPE_COLOR:
223 printf("%06x [color]", s->val.color);
227 CLIST_FOR_EACH(struct style_val_list_entry *, e, *s->val.list)
231 style_dump_val(&e->val);
236 printf("[unknown type %u]", s->type);
240 void style_dump_prop(struct style_prop *s)
242 printf("%s = ", style_prop_decode(s->key));
247 void style_scale(struct style_info *si, double *wp, double *hp, prop_t width_prop, prop_t height_prop)
250 bool got_width = style_get_number(si, width_prop, &w);
251 bool got_height = style_get_number(si, height_prop, &h);
253 if (got_width + got_height == 2)
258 else if (got_width + got_height == 1)