Mercurial > MadButterfly
annotate include/mb_tools.h @ 569:f87a368e847a Android_Skia
Functions of stroke and fill a shape
author | Thinker K.F. Li <thinker@branda.to> |
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date | Wed, 09 Jun 2010 14:44:20 +0800 |
parents | c6c0d017dc8e |
children | 586e50f82c1f |
rev | line source |
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12 | 1 #ifndef __TOOLS_H_ |
2 #define __TOOLS_H_ | |
3 | |
4 typedef struct _elmpool elmpool_t; | |
5 | |
6 extern elmpool_t *elmpool_new(int elm_sz, int inc_num); | |
7 extern void *elmpool_elm_alloc(elmpool_t *pool); | |
8 extern void elmpool_elm_free(elmpool_t *pool, void *elm); | |
9 extern void elmpool_free(elmpool_t *pool); | |
10 | |
11 | |
12 #define STAILQ(type) \ | |
13 struct { \ | |
14 type *head; \ | |
15 type *tail; \ | |
16 } | |
17 #define STAILQ_INIT(q) \ | |
18 do { \ | |
19 (q).head = (q).tail = NULL; \ | |
20 } while(0) | |
13 | 21 #define STAILQ_CLEAN(q) STAILQ_INIT(q) |
12 | 22 #define STAILQ_HEAD(q) ((q).head) |
23 #define STAILQ_TAIL(q) ((q).tail) | |
24 #define STAILQ_NEXT(type, field, elm) ((elm)->field) | |
25 #define STAILQ_INS(q, type, field, elm) \ | |
26 do { \ | |
27 (elm)->field = (q).head; \ | |
28 (q).head = elm; \ | |
29 if((q).tail == NULL) \ | |
30 (q).tail = elm; \ | |
31 } while(0) | |
32 #define STAILQ_INS_TAIL(q, type, field, elm) \ | |
33 do { \ | |
34 (elm)->field = NULL; \ | |
35 if((q).tail != NULL) \ | |
36 (q).tail->field = elm; \ | |
37 (q).tail = elm; \ | |
38 if((q).head == NULL) \ | |
39 (q).head = elm; \ | |
40 } while(0) | |
39 | 41 #define STAILQ_INS_AFTER(type, field, follow, elm) \ |
42 do { \ | |
43 (follow)->field = (elm)->field; \ | |
44 (elm)->field = follow; \ | |
45 } while(0) | |
12 | 46 #define STAILQ_REMOVE(q, type, field, elm) \ |
96 | 47 do { \ |
12 | 48 if((elm) == (q).head) { \ |
49 (q).head = (elm)->field; \ | |
50 if((q).head == NULL) \ | |
51 (q).tail = NULL; \ | |
52 } else { \ | |
53 type *_stailq_cur = (q).head; \ | |
54 while(_stailq_cur != NULL && \ | |
55 _stailq_cur->field != (elm)) \ | |
56 _stailq_cur = _stailq_cur->field; \ | |
57 if(_stailq_cur != NULL) { \ | |
155
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58 _stailq_cur->field = (elm)->field; \ |
12 | 59 if((q).tail == (elm)) \ |
60 (q).tail = _stailq_cur; \ | |
61 } \ | |
62 } \ | |
63 } while(0) | |
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64 #define STAILQ_FOR_EACH(q, type, field, elm) \ |
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65 for((elm) = (q).head; \ |
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66 (elm) != NULL; \ |
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67 (elm) = (elm)->field) |
12 | 68 |
158
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69 /*! \defgroup darray Dynamic Array |
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70 * |
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71 * DARRAY is a dynamic sized array/list, it's length is a variable. |
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72 * It is extended, automatically, if it is full and more elemnts are |
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73 * putted in. |
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74 * |
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75 * Users of DARRAY must declare a new type to store data. The way to |
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76 * declear a new type is to invoke DARRAY() with paramters of name of |
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77 * type and type of data to be stored in. The new storage type is named |
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78 * with foo_t where foo is the name you pass in. |
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79 * |
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80 * DARRAY_DEFINE() is inovked to define foo_add() function; foo is name |
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81 * of storage type. You can call foo_add() to add a data element |
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82 * into a storage object. |
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83 * |
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84 * Get ith element in a storage object, use |
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85 * \code |
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86 * obj->ds[i] |
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87 * \endcode |
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88 * |
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89 * To loop over elements in a storage object, us |
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90 * \code |
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91 * for(i = 0; i < obj->num; i++) { |
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92 * v = obj->ds[i]; |
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93 * ...... |
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94 * } |
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95 * \endcode |
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96 * @{ |
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97 */ |
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98 /*! \brief Declare a DARRAY storage type. |
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99 * |
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100 * \param name is name of storage type. |
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101 * \param type is type of data elements that will be stored in. |
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102 * |
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103 * Type of <name>_t is defined by the macro. It is used to define a |
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104 * storage object to contain data elements. |
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105 */ |
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106 #define DARRAY(name, type) \ |
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107 struct _ ## name { \ |
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108 int max, num; \ |
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109 type *ds; \ |
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110 }; \ |
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111 typedef struct _ ## name name ## _t |
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112 #define DARRAY_DEFINE(name, type) \ |
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113 static int name ## _add(name ## _t *da, type v) { \ |
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114 type *new_ds; \ |
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115 int max; \ |
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116 if(da->num >= (da)->max) { \ |
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117 max = (da)->max + 32; \ |
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118 new_ds = realloc(da->ds, \ |
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119 max * sizeof(type)); \ |
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120 if(new_ds == NULL) return -1; \ |
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121 da->ds = new_ds; \ |
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122 da->max = max; \ |
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123 } \ |
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124 da->ds[da->num++] = v; \ |
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125 return 0; \ |
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126 } |
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127 #define DARRAY_DEFINE_ADV(name, type) \ |
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128 static int name ## _adv(name ## _t *da, int n) { \ |
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129 type *new_ds; \ |
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130 int max; \ |
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131 if((da->num + n) > (da)->max) { \ |
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132 max = ((da)->num + n + 31) & ~0x1f; \ |
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133 new_ds = realloc(da->ds, \ |
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134 max * sizeof(type)); \ |
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135 if(new_ds == NULL) return -1; \ |
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136 da->ds = new_ds; \ |
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137 da->max = max; \ |
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138 } \ |
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139 da->num += n; \ |
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140 return 0; \ |
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141 } |
158
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142 #define DARRAY_CLEAN(da) do { (da)->num = 0; } while(0) |
235 | 143 #define DARRAY_INIT(da) \ |
144 do { (da)->num = (da)->max = 0; (da)->ds = NULL; } while(0) | |
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145 #define DARRAY_DESTROY(da) do { if((da)->ds) free((da)->ds); } while(0) |
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146 /* @} */ |
55 | 147 |
131
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148 #include <stdlib.h> |
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149 |
55 | 150 #define O_ALLOC(type) ((type *)malloc(sizeof(type))) |
151 | |
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152 #define OFFSET(type, mem) (((void *)&((type *)NULL)->mem) - NULL) |
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153 #define MEM2OBJ(var, type, mem) ((type *)((void *)var - OFFSET(type, mem))) |
93 | 154 #define OFF2TYPE(obj, off, type) (*(type *)((void *)(obj) + (off))) |
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155 |
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156 #define MB_MAX(a, b) ((a) > (b)? (a): (b)) |
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157 #define MB_MIN(a, b) ((a) < (b)? (a): (b)) |
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158 |
12 | 159 #endif /* __TOOLS_H_ */ |