annotate include/mb_tools.h @ 191:18f8c3126cdb

Refine installation instructions and document event dispatching by wycc.
author Thinker K.F. Li <thinker@branda.to>
date Tue, 18 Nov 2008 13:55:09 +0800
parents 530bb7728546
children 65cabbdd5284
rev   line source
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1 #ifndef __TOOLS_H_
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2 #define __TOOLS_H_
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3
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4 typedef struct _elmpool elmpool_t;
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5
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6 extern elmpool_t *elmpool_new(int elm_sz, int inc_num);
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7 extern void *elmpool_elm_alloc(elmpool_t *pool);
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8 extern void elmpool_elm_free(elmpool_t *pool, void *elm);
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9 extern void elmpool_free(elmpool_t *pool);
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10
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11
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12 #define STAILQ(type) \
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13 struct { \
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14 type *head; \
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15 type *tail; \
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16 }
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17 #define STAILQ_INIT(q) \
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18 do { \
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19 (q).head = (q).tail = NULL; \
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20 } while(0)
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21 #define STAILQ_CLEAN(q) STAILQ_INIT(q)
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22 #define STAILQ_HEAD(q) ((q).head)
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23 #define STAILQ_TAIL(q) ((q).tail)
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24 #define STAILQ_NEXT(type, field, elm) ((elm)->field)
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25 #define STAILQ_INS(q, type, field, elm) \
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26 do { \
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27 (elm)->field = (q).head; \
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28 (q).head = elm; \
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29 if((q).tail == NULL) \
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30 (q).tail = elm; \
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31 } while(0)
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32 #define STAILQ_INS_TAIL(q, type, field, elm) \
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33 do { \
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34 (elm)->field = NULL; \
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35 if((q).tail != NULL) \
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36 (q).tail->field = elm; \
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37 (q).tail = elm; \
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38 if((q).head == NULL) \
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39 (q).head = elm; \
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40 } while(0)
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41 #define STAILQ_INS_AFTER(type, field, follow, elm) \
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42 do { \
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43 (follow)->field = (elm)->field; \
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44 (elm)->field = follow; \
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45 } while(0)
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46 #define STAILQ_REMOVE(q, type, field, elm) \
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47 do { \
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48 if((elm) == (q).head) { \
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49 (q).head = (elm)->field; \
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50 if((q).head == NULL) \
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51 (q).tail = NULL; \
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52 } else { \
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53 type *_stailq_cur = (q).head; \
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54 while(_stailq_cur != NULL && \
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55 _stailq_cur->field != (elm)) \
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56 _stailq_cur = _stailq_cur->field; \
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57 if(_stailq_cur != NULL) { \
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58 _stailq_cur->field = (elm)->field; \
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59 if((q).tail == (elm)) \
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60 (q).tail = _stailq_cur; \
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61 } \
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62 } \
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63 } while(0)
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64
158
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65 /*! \defgroup darray Dynamic Array
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66 *
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67 * DARRAY is a dynamic sized array/list, it's length is a variable.
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68 * It is extended, automatically, if it is full and more elemnts are
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69 * putted in.
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70 *
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71 * Users of DARRAY must declare a new type to store data. The way to
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72 * declear a new type is to invoke DARRAY() with paramters of name of
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73 * type and type of data to be stored in. The new storage type is named
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74 * with foo_t where foo is the name you pass in.
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75 *
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76 * DARRAY_DEFINE() is inovked to define foo_add() function; foo is name
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77 * of storage type. You can call foo_add() to add a data element
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78 * into a storage object.
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79 *
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80 * Get ith element in a storage object, use
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81 * \code
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82 * obj->ds[i]
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83 * \endcode
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84 *
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85 * To loop over elements in a storage object, us
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86 * \code
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87 * for(i = 0; i < obj->num; i++) {
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88 * v = obj->ds[i];
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89 * ......
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90 * }
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91 * \endcode
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92 * @{
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93 */
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94 /*! \brief Declare a DARRAY storage type.
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95 *
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96 * \param name is name of storage type.
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97 * \param type is type of data elements that will be stored in.
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98 *
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99 * Type of <name>_t is defined by the macro. It is used to define a
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100 * storage object to contain data elements.
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101 */
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102 #define DARRAY(name, type) \
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103 struct _ ## name { \
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104 int max, num; \
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105 type *ds; \
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106 }; \
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107 typedef struct _ ## name name ## _t
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108 #define DARRAY_DEFINE(name, type) \
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109 static int name ## _add(name ## _t *da, type v) { \
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110 type *new_ds; \
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111 int max; \
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112 if(da->num >= (da)->max) { \
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113 max = (da)->max + 32; \
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114 new_ds = realloc(da->ds, \
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115 max * sizeof(type)); \
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116 if(new_ds == NULL) return -1; \
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117 da->ds = new_ds; \
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118 da->max = max; \
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119 } \
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120 da->ds[da->num++] = v; \
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121 return 0; \
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122 }
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123 #define DARRAY_CLEAN(da) do { (da)->num = 0; } while(0)
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124 #define DARRAY_INIT(da) do { (da)->num = (da)->max = 0; (da)->ds = NULL; }
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125 #define DARRAY_DESTROY(da) do { if((da)->ds) free((da)->ds); } while(0)
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126 /* @} */
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127
131
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128 #include <stdlib.h>
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129
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130 #define O_ALLOC(type) ((type *)malloc(sizeof(type)))
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131
73
9ab15ebc9061 Observer for mouse events
Thinker K.F. Li <thinker@branda.to>
parents: 55
diff changeset
132 #define OFFSET(type, mem) (((void *)&((type *)NULL)->mem) - NULL)
9ab15ebc9061 Observer for mouse events
Thinker K.F. Li <thinker@branda.to>
parents: 55
diff changeset
133 #define MEM2OBJ(var, type, mem) ((type *)((void *)var - OFFSET(type, mem)))
93
Thinker K.F. Li <thinker@branda.to>
parents: 73
diff changeset
134 #define OFF2TYPE(obj, off, type) (*(type *)((void *)(obj) + (off)))
73
9ab15ebc9061 Observer for mouse events
Thinker K.F. Li <thinker@branda.to>
parents: 55
diff changeset
135
12
79e9edf4c00a Add redraw manager
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
136 #endif /* __TOOLS_H_ */