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annotate nodejs/coord.cc @ 684:b346e4699e55

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Add more comment for JS binding
author Thinker K.F. Li <thinker@branda.to>
date Sat, 07 Aug 2010 19:33:42 +0800
parents a588eefd3f04
children 763a4e2bbd85
rev   line source
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1 #include <stdio.h>
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2 #include <v8.h>
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3
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4 extern "C" {
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5 #include "mb.h"
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6 #include "mb_X_supp.h"
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7 #include "mb_tools.h"
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8 #include "X_supp_njs.h"
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9 }
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10
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11 #include "mbfly_njs.h"
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12
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13 #ifndef ASSERT
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14 #define ASSERT(x)
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15 #endif
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16
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17 using namespace v8;
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18
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19 /*! \defgroup xnjsmb_coord JS binding for coord objects.
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20 * \ingroup xnjsmb
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21 *
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22 * @{
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23 */
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24 static void
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25 xnjsmb_coord_mod(Handle<Object> self, coord_t *coord) {
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26 Persistent<Object> *self_hdl;
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27 subject_t *subject;
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28 Handle<Value> subject_o;
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29
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30 /* Keep associated js object in property store for retrieving,
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31 * later, without create new js object.
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32 */
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33 self_hdl = new Persistent<Object>(self);
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34 mb_prop_set(&coord->obj.props, PROP_JSOBJ, self_hdl);
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35
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36 subject = coord->mouse_event;
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37 subject_o = export_xnjsmb_auto_subject_new(subject);
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38 SET(self, "mouse_event", subject_o);
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39 }
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40
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41 static float
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42 coord_get_index(coord_t *coord, Handle<Object> self, int idx,
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43 const char **err) {
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44 if(idx < 0 || idx >= 6) {
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45 *err = "Invalid index: out of range";
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46 return 0;
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47 }
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48
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49 return coord_get_matrix(coord)[idx];
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50 }
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51
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52 static float
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53 coord_set_index(coord_t *coord, Handle<Object> self,
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54 int idx, float v, const char **err) {
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55 Handle<Object> js_rt;
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56 redraw_man_t *rdman;
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57
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58 if(idx < 0 || idx >= 6) {
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59 *err = "Invalid index: out of range";
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60 return 0;
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61 }
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62
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63 coord_get_matrix(coord)[idx] = v;
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64
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65 js_rt = GET(self, "mbrt")->ToObject();
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66 rdman = xnjsmb_rt_rdman(js_rt);
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67 rdman_coord_changed(rdman, coord);
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68
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69 return v;
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70 }
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71
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72 static void
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73 xnjsmb_coord_add_shape(coord_t *coord, Handle<Object> self,
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74 shape_t *shape, const char **err) {
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75 Handle<Object> js_rt;
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76 redraw_man_t *rdman;
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77 int r;
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78
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79 js_rt = GET(self, "mbrt")->ToObject();
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80 rdman = xnjsmb_rt_rdman(js_rt);
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81 r = rdman_add_shape(rdman, shape, coord);
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82 if(r != 0)
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83 *err = "Unknown error";
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84 }
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85
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86 #include "coord-inc.h"
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87
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88 /*! \brief This function used by \ref xnjsmb_mb_rt to wrap coord object.
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89 */
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90 Handle<Value> export_xnjsmb_auto_coord_new(coord_t *coord) {
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91 xnjsmb_auto_coord_new(coord);
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92 }
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93
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94 /*! \brief Initialize Javascript object for root coord of a runtime.
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95 *
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96 * \param js_rt is the runtime object to create the root object for.
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97 *
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98 * After the function, js_rt.root is the object for root coord in
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99 * Javascript.
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100 */
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101 void
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102 xnjsmb_coord_mkroot(Handle<Object> js_rt) {
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103 redraw_man_t *rdman;
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104 coord_t *root;
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105 Handle<Object> obj;
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106 static int init_flag = 0;
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107
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108 if(!init_flag) {
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109 xnjsmb_auto_coord_init();
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110 init_flag = 1;
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111 }
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112
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113 rdman = xnjsmb_rt_rdman(js_rt);
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114 root = rdman_get_root(rdman);
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115 obj = xnjsmb_auto_coord_new(root).As<Object>();
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116 SET(obj, "mbrt", js_rt);
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117
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118 SET(js_rt, "root", obj);
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119 }
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120
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121 /* @} */