annotate include/mb_prop.h @ 776:77b561bb7929

Implement new algorithm to calculate the origin of the SVG elemnts so that we can implement object resize without changing the position of the object. However, the image does not work here since it does not use the transformation of the group.
author wycc
date Mon, 30 Aug 2010 08:56:44 +0800
parents fc29a343ce7c
children 586e50f82c1f
rev   line source
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1 #ifndef __MB_PROP_H_
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2 #define __MB_PROP_H_
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3
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4 #include "mb_tools.h"
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5
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6 /*! \defgroup mb_prop_grp Property
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7 * \brief A way the modules can set up their own properties on objects.
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8 *
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9 * Properties are key-value pairs that are associated with objects.
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10 * MadButterfly associate a property store for each object (coord or shape)
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11 * to keep property values. Every property is identified by a ID; an
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12 * integer. Programmer can use a ID to set/get value to/from a property
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13 * store. The ID should be unique in a property store.
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14 *
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15 * \todo Add a free function pointer on entries to release resources when
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16 * the store is destroy. (See: \ref mouse.c)
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17 *
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18 * @{
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19 */
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20
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21 typedef struct _mb_prop_entry mb_prop_entry_t;
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22 typedef struct _mb_prop_store mb_prop_store_t;
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23
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24 struct _mb_prop_entry {
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25 int id;
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26 void *value;
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27 mb_prop_entry_t *next;
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28 };
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29
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30 /*! \brief Property IDs. */
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31 enum {
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32 PROP_DUMMY,
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33 PROP_MEVT_OB_CNT,
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34 PROP_MEVT_OBSERVER,
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35 PROP_JSOBJ,
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36 PROP_LAST
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37 };
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38
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39 struct _mb_prop_store {
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40 elmpool_t *entry_pool;
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41 STAILQ(mb_prop_entry_t) entries;
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42 };
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43
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44 #define mb_prop_store_init(prop_store, pent_pool) \
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45 do { \
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46 (prop_store)->entry_pool = pent_pool; \
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47 STAILQ_INIT((prop_store)->entries); \
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48 } while(0)
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49
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50 void mb_prop_store_destroy(mb_prop_store_t *prop_store);
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51 void *mb_prop_set(mb_prop_store_t *prop_store, int id, void *value);
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52 void *mb_prop_get(mb_prop_store_t *prop_store, int id);
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53 void mb_prop_del(mb_prop_store_t *prop_store, int id);
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54 int mb_prop_has(mb_prop_store_t *prop_store, int id);
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55
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56 /* @} */
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57
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58 #endif /* __MB_PROP_H_ */