Mercurial > MadButterfly

annotate nodejs/coord.cc @ 1449:ef3908d9a3d2

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Revert 4be04f29fa70
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 12 Apr 2011 14:50:10 +0800
parents 4be04f29fa70
children 5d89aa30310c
rev   line source
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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2 // vim: sw=4:ts=8:sts=4
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3 #include <stdio.h>
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4 #include <v8.h>
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5
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6 extern "C" {
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7 #include "mb.h"
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8 #include "mb_X_supp.h"
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9 #include "mb_tools.h"
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10 #include "njs_mb_supp.h"
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11 }
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12
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13 #include "mbfly_njs.h"
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14
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15 #ifndef ASSERT
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16 #define ASSERT(x)
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17 #endif
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18
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19 #define OK 0
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20
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21 /*! \page jsgc How to Manage Life-cycle of Objects for Javascript.
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22 *
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23 * The life-cycle of MadButterfly ojects are simple. A object is live
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24 * when it is created and dead when it is free. When a coord or shape
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25 * is free, it is also removed from the tree. There is not way to
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26 * remove a coord or a shape without freeing it. So, if you want to
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27 * remove a coord or a shape object from the tree, you can only free
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28 * it.
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29 *
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30 * Javascript, in conventional, does not free an object. It has GC,
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31 * the engine, being used, will free an object if it is no more
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32 * referenced. So, we had better provide a removing function, but
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33 * actually free an object. In idea situation, a new MB object would
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34 * be created for and attached on the JS object, when an object added
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35 * back to the tree. But, it means we need to keep states of an
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36 * object and create a new one with the same states later. It is
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37 * complicated. So, once an object is removed, it is invalidated.
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38 *
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39 * I hope someone would implement a higher abstract layer, in JS, to
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40 * implement the idea model that recreate a new object when an
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41 * invalidated JS object being added back.
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42 *
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43 * An invalid object is the one with NULL internal field and obj.valid
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44 * == false. The binding of MadButterfly hold a reference to every
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45 * object added to the tree of a mbrt (runtime object), and remove the
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46 * reference and invalidate it when it being removed.
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47 *
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48 * For coords, they are always attached to the tree when it is valid.
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49 * So, binding hold a persistent reference to it. The reference is
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50 * purged when a coord being removed from the tree and being
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51 * invalidated.
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52 *
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53 * For any shape, it is not attached to the tree at begining, but is
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54 * attached to a tree laterly, or is collected by GC. The binding
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55 * hold a weak reference for a new shape, and upgrade to a strong
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56 * reference when the shape being added to the tree.
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57 */
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58
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59 using namespace v8;
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60
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61 /*! \defgroup xnjsmb_coord JS binding for coord objects.
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62 * \ingroup xnjsmb
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63 *
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64 * @{
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65 */
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66 /*! \brief Invalidate JS objects for coords and shapes in a subtree.
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67 *
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68 * \param self is the object of the root of subtree.
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69 *
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70 * \sa \ref jsgc
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71 */
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72 static void
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73 xnjsmb_coord_invalidate_subtree(coord_t *coord) {
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74 Persistent<Object> *child_hdl;
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75 Persistent<Object> *mem_hdl;
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76 coord_t *child;
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77 shape_t *mem;
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78 Handle<Value> _false = Boolean::New(0);
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79
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80 /* Invalidate all coords in the subtree */
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81 FOR_COORDS_PREORDER(coord, child) {
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82 child_hdl = (Persistent<Object> *)mb_prop_get(&child->obj.props,
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83 PROP_JSOBJ);
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84 /* There is no associated JS object. Perhaps, it is created
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85 * by xnjsmb_coord_clone_from_subtree().
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86 */
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87 if(child_hdl == NULL) {
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88 preorder_coord_skip_subtree(child);
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89 continue;
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90 }
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91
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92 SET(*child_hdl, "valid", _false);
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93 WRAP(*child_hdl, NULL);
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94 child_hdl->Dispose();
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95 delete child_hdl;
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96
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97 /* Invalidate members of a coord */
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98 FOR_COORD_SHAPES(child, mem) {
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99 mem_hdl = (Persistent<Object> *)mb_prop_get(&mem->obj.props,
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100 PROP_JSOBJ);
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101 /* There is no associated JS object. Perhaps, it is
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102 * created by xnjsmb_coord_clone_from_subtree().
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103 */
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104 if(mem_hdl == NULL)
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105 continue;
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106
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107 SET(*mem_hdl, "valid", _false);
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108 WRAP(*mem_hdl, NULL);
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109 mem_hdl->Dispose();
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110 delete mem_hdl;
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111 }
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112 }
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113 }
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114
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115 /*! \brief Free C objects for coords and shapes in a subtree.
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116 *
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117 * \param self is the object of the root of subtree.
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118 *
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119 * \sa \ref jsgc
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120 */
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121 static void
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122 xnjsmb_coord_free_subtree(redraw_man_t *rdman, coord_t *coord) {
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123 coord_t *child, *last_child;
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124 shape_t *mem, *last_mem;
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
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diff changeset
125 int r;
822
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Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
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126
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
127 rdman_coord_changed(rdman, coord);
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Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
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128
744
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diff changeset
129 last_child = NULL;
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
130 FOR_COORDS_POSTORDER(coord, child) {
6a988e23ad2a A dirty implementation of removing subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 743
diff changeset
131 if(last_child != NULL) {
768
13669b28826d Fix issue of memory leaking for coord objects.
Thinker K.F. Li <thinker@codemud.net>
parents: 766
diff changeset
132 r = rdman_coord_free(rdman, last_child);
744
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
133 if(r != OK)
6a988e23ad2a A dirty implementation of removing subtree
Thinker K.F. Li <thinker@codemud.net>
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diff changeset
134 THROW_noret("Unknown error");
6a988e23ad2a A dirty implementation of removing subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 743
diff changeset
135 }
822
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Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
diff changeset
136
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
137 /* Free members of a coord */
744
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diff changeset
138 last_mem = NULL;
741
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diff changeset
139 FOR_COORD_SHAPES(child, mem) {
744
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
140 if(last_mem != NULL) {
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
141 r = rdman_shape_free(rdman, last_mem);
6a988e23ad2a A dirty implementation of removing subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 743
diff changeset
142 if(r != OK)
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Thinker K.F. Li <thinker@codemud.net>
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143 THROW_noret("Unknown error");
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Thinker K.F. Li <thinker@codemud.net>
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144 }
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
145
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diff changeset
146 last_mem = mem;
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147 }
744
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
148 if(last_mem != NULL) {
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
149 r = rdman_shape_free(rdman, last_mem);
6a988e23ad2a A dirty implementation of removing subtree
Thinker K.F. Li <thinker@codemud.net>
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diff changeset
150 if(r != OK)
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diff changeset
151 THROW_noret("Unknown error");
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152 }
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153
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154 last_child = child;
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
155 }
6a988e23ad2a A dirty implementation of removing subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 743
diff changeset
156 if(last_child != NULL) {
768
13669b28826d Fix issue of memory leaking for coord objects.
Thinker K.F. Li <thinker@codemud.net>
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diff changeset
157 r = rdman_coord_free(rdman, last_child);
744
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
158 if(r != OK)
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159 THROW_noret("Unknown error");
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160 }
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Thinker K.F. Li <thinker@codemud.net>
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161 }
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Thinker K.F. Li <thinker@codemud.net>
parents: 739
diff changeset
162
680
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
163 static void
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
164 xnjsmb_coord_mod(Handle<Object> self, coord_t *coord) {
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
165 Persistent<Object> *self_hdl;
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
166 subject_t *subject;
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
167 Handle<Value> subject_o;
822
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diff changeset
168
680
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
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169 /* Keep associated js object in property store for retrieving,
a588eefd3f04 Refactor to xnjsmb_coord_mod().
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parents: 667
diff changeset
170 * later, without create new js object.
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
171 */
743
dd1f3382d6a4 Create a persistent handle for coords and shapes correctly
Thinker K.F. Li <thinker@codemud.net>
parents: 742
diff changeset
172 self_hdl = new Persistent<Object>();
dd1f3382d6a4 Create a persistent handle for coords and shapes correctly
Thinker K.F. Li <thinker@codemud.net>
parents: 742
diff changeset
173 *self_hdl = Persistent<Object>::New(self);
680
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
174 mb_prop_set(&coord->obj.props, PROP_JSOBJ, self_hdl);
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
175
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
176 subject = coord->mouse_event;
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
177 subject_o = export_xnjsmb_auto_subject_new(subject);
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
178 SET(self, "mouse_event", subject_o);
741
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Thinker K.F. Li <thinker@codemud.net>
parents: 739
diff changeset
179 SET(self, "valid", Boolean::New(1));
680
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
parents: 667
diff changeset
180 }
a588eefd3f04 Refactor to xnjsmb_coord_mod().
Thinker K.F. Li <thinker@branda.to>
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diff changeset
181
661
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Thinker K.F. Li <thinker@branda.to>
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diff changeset
182 static float
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Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
183 coord_get_index(coord_t *coord, Handle<Object> self, int idx,
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
184 const char **err) {
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
185 if(idx < 0 || idx >= 6) {
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
186 *err = "Invalid index: out of range";
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
187 return 0;
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Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
188 }
557
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
189
661
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diff changeset
190 return coord_get_matrix(coord)[idx];
557
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
191 }
0ca8437a91fa Implement Indexed Property interceptors
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parents:
diff changeset
192
661
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Thinker K.F. Li <thinker@branda.to>
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diff changeset
193 static float
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Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
194 coord_set_index(coord_t *coord, Handle<Object> self,
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
195 int idx, float v, const char **err) {
560
ce7a35abcb0d Function to instantiate coord for Javascript
Thinker K.F. Li <thinker@branda.to>
parents: 557
diff changeset
196 Handle<Object> js_rt;
557
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parents:
diff changeset
197 redraw_man_t *rdman;
822
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Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
diff changeset
198
661
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Thinker K.F. Li <thinker@branda.to>
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diff changeset
199 if(idx < 0 || idx >= 6) {
90c7726bc953 Replace part code of coord.cc by the code generated by generator
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parents: 566
diff changeset
200 *err = "Invalid index: out of range";
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
201 return 0;
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
202 }
557
0ca8437a91fa Implement Indexed Property interceptors
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
203
1423
d82a828e8e26 Optimize the performance. If properties is not changed, we don't call rdman_coord_changed.
wycc
parents: 1416
diff changeset
204 if (coord_get_matrix(coord)[idx] == v) return v;
d82a828e8e26 Optimize the performance. If properties is not changed, we don't call rdman_coord_changed.
wycc
parents: 1416
diff changeset
205
661
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
206 coord_get_matrix(coord)[idx] = v;
822
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Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
diff changeset
207
560
ce7a35abcb0d Function to instantiate coord for Javascript
Thinker K.F. Li <thinker@branda.to>
parents: 557
diff changeset
208 js_rt = GET(self, "mbrt")->ToObject();
ce7a35abcb0d Function to instantiate coord for Javascript
Thinker K.F. Li <thinker@branda.to>
parents: 557
diff changeset
209 rdman = xnjsmb_rt_rdman(js_rt);
557
0ca8437a91fa Implement Indexed Property interceptors
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
210 rdman_coord_changed(rdman, coord);
0ca8437a91fa Implement Indexed Property interceptors
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
211
661
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
212 return v;
557
0ca8437a91fa Implement Indexed Property interceptors
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
213 }
560
ce7a35abcb0d Function to instantiate coord for Javascript
Thinker K.F. Li <thinker@branda.to>
parents: 557
diff changeset
214
661
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
215 static void
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
216 xnjsmb_coord_add_shape(coord_t *coord, Handle<Object> self,
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
217 shape_t *shape, const char **err) {
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
218 Handle<Object> js_rt;
748
56a5e08cd8af Make shapes can be removed from the tree
Thinker K.F. Li <thinker@codemud.net>
parents: 746
diff changeset
219 Persistent<Object> *shape_hdl;
566
6639d386db78 Function of add a shape to a coord in Javascript.
Thinker K.F. Li <thinker@branda.to>
parents: 563
diff changeset
220 redraw_man_t *rdman;
6639d386db78 Function of add a shape to a coord in Javascript.
Thinker K.F. Li <thinker@branda.to>
parents: 563
diff changeset
221 int r;
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
diff changeset
222
661
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
223 js_rt = GET(self, "mbrt")->ToObject();
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
224 rdman = xnjsmb_rt_rdman(js_rt);
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
225 r = rdman_add_shape(rdman, shape, coord);
566
6639d386db78 Function of add a shape to a coord in Javascript.
Thinker K.F. Li <thinker@branda.to>
parents: 563
diff changeset
226 if(r != 0)
661
90c7726bc953 Replace part code of coord.cc by the code generated by generator
Thinker K.F. Li <thinker@branda.to>
parents: 566
diff changeset
227 *err = "Unknown error";
748
56a5e08cd8af Make shapes can be removed from the tree
Thinker K.F. Li <thinker@codemud.net>
parents: 746
diff changeset
228
56a5e08cd8af Make shapes can be removed from the tree
Thinker K.F. Li <thinker@codemud.net>
parents: 746
diff changeset
229 /* see \ref jsgc */
56a5e08cd8af Make shapes can be removed from the tree
Thinker K.F. Li <thinker@codemud.net>
parents: 746
diff changeset
230 shape_hdl = (Persistent<Object> *)mb_prop_get(&shape->obj.props,
56a5e08cd8af Make shapes can be removed from the tree
Thinker K.F. Li <thinker@codemud.net>
parents: 746
diff changeset
231 PROP_JSOBJ);
56a5e08cd8af Make shapes can be removed from the tree
Thinker K.F. Li <thinker@codemud.net>
parents: 746
diff changeset
232 shape_hdl->ClearWeak();
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 768
diff changeset
233 rdman_shape_changed(rdman, shape);
566
6639d386db78 Function of add a shape to a coord in Javascript.
Thinker K.F. Li <thinker@branda.to>
parents: 563
diff changeset
234 }
6639d386db78 Function of add a shape to a coord in Javascript.
Thinker K.F. Li <thinker@branda.to>
parents: 563
diff changeset
235
741
d8764f10e141 Remove a coord from the tree in JS
Thinker K.F. Li <thinker@codemud.net>
parents: 739
diff changeset
236 static void
745
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
237 xnjsmb_coord_remove(coord_t *coord, Handle<Object> self) {
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
238 Handle<Object> js_rt;
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
239 redraw_man_t *rdman;
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
diff changeset
240
745
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
241 if(!GET(self, "valid")->ToBoolean()->Value()) /* Invalidated object */
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
242 THROW_noret("Invalid object");
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
diff changeset
243
745
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
244 js_rt = GET(self, "mbrt")->ToObject();
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
245 rdman = xnjsmb_rt_rdman(js_rt);
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
246
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
247 xnjsmb_coord_invalidate_subtree(coord);
4ccb0553e804 Refactor code of free C objects into xnjsmb_coord_free_subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 744
diff changeset
248 xnjsmb_coord_free_subtree(rdman, coord);
741
d8764f10e141 Remove a coord from the tree in JS
Thinker K.F. Li <thinker@codemud.net>
parents: 739
diff changeset
249 }
d8764f10e141 Remove a coord from the tree in JS
Thinker K.F. Li <thinker@codemud.net>
parents: 739
diff changeset
250
1377
8ecee58c85c6 Fix issue of crashing for cloned subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 1372
diff changeset
251 static void
8ecee58c85c6 Fix issue of crashing for cloned subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 1372
diff changeset
252 _xnjsmb_coord_clone_from_subtree_mod(Handle<Object> src, Handle<Value> ret) {
8ecee58c85c6 Fix issue of crashing for cloned subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 1372
diff changeset
253 Handle<Object> js_rt;
8ecee58c85c6 Fix issue of crashing for cloned subtree
Thinker K.F. Li <thinker@codemud.net>
parents: 1372
diff changeset
254 Handle<Object> ret_obj = ret->ToObject();
1416
c60a978f98b1 Fix issue of seg. fault at xnjsmb_coord_invalidate_subtree().
Thinker K.F. Li <thinker@codemud.net>
parents: 1415
diff changeset
255 coord_t *ret_coord, *child;
c60a978f98b1 Fix issue of seg. fault at xnjsmb_coord_invalidate_subtree().
Thinker K.F. Li <thinker@codemud.net>
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diff changeset
256 Handle<Object> child_obj;
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diff changeset
257
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258 js_rt = GET(src, "mbrt")->ToObject();
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259 SET(ret_obj, "mbrt", js_rt);
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260
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diff changeset
261 /* Only root of the subtree is warpped. Descendants of subtree
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262 * are not wrapped by JS object. We have no any method to access
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263 * children and members of a coord, now. So, it is fine. But,
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264 * sometime later, we will provide APIs for traveling a tree. At
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265 * that time, we need to create wrappers for all descendants.
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diff changeset
266 */
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267 ret_coord = (coord_t *)UNWRAP(ret_obj);
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268 xnjsmb_coord_mod(ret_obj, ret_coord);
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269 }
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270
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271 static coord_t *
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272 xnjsmb_coord_clone_from_subtree(coord_t *coord, Handle<Object> self,
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273 coord_t *src, const char **err) {
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274 Handle<Object> js_rt;
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275 redraw_man_t *rdman;
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276 coord_t *cloning;
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277
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278 js_rt = GET(self, "mbrt")->ToObject();
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279 ASSERT(js_rt != NULL);
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280 rdman = xnjsmb_rt_rdman(js_rt);
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281
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282 cloning = rdman_coord_clone_from_subtree(rdman, coord, src);
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283 if(cloning == NULL) {
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284 *err = "can not clone a subtree (allocate memory)";
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285 return NULL;
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286 }
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287 rdman_coord_changed(rdman, cloning);
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288
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289 return cloning;
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290 }
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291
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292 static void
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293 xnjsmb_coord_show(coord_t *coord, Handle<Object> self) {
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294 Handle<Object> js_rt;
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diff changeset
295 redraw_man_t *rdman;
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296
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297 js_rt = GET(self, "mbrt")->ToObject();
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298 ASSERT(js_rt != NULL);
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299 rdman = xnjsmb_rt_rdman(js_rt);
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300 if ((coord->flags & COF_HIDDEN) == 0) return;
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diff changeset
301 coord_show(coord);
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302 rdman_coord_changed(rdman, coord);
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303 }
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304
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diff changeset
305 static void
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306 xnjsmb_coord_hide(coord_t *coord, Handle<Object> self) {
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307 Handle<Object> js_rt;
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308 redraw_man_t *rdman;
822
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309
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310 js_rt = GET(self, "mbrt")->ToObject();
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311 ASSERT(js_rt != NULL);
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312 rdman = xnjsmb_rt_rdman(js_rt);
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313
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314 if ((coord->flags & COF_HIDDEN) != 0) return;
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315 coord_hide(coord);
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diff changeset
316 rdman_coord_changed(rdman, coord);
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317 }
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318
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84853c8559cf Support opacity on coords
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diff changeset
319 static void
829
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320 xnjsmb_coord_set_opacity(Handle<Object> self, coord_t *coord, Handle<Value> value, const char **str)
379fd510ba38 Define accessor for the opacity attribute of the coord
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321 {
810
84853c8559cf Support opacity on coords
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parents: 778
diff changeset
322 Handle<Object> js_rt;
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323 redraw_man_t *rdman;
829
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diff changeset
324
810
84853c8559cf Support opacity on coords
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325 js_rt = GET(self, "mbrt")->ToObject();
84853c8559cf Support opacity on coords
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diff changeset
326 ASSERT(js_rt != NULL);
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parents: 778
diff changeset
327 rdman = xnjsmb_rt_rdman(js_rt);
822
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328
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329 if (coord_get_opacity(coord) == value->NumberValue()) return;
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330
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331 coord_set_opacity(coord, value->NumberValue());
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84853c8559cf Support opacity on coords
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diff changeset
332 rdman_coord_changed(rdman, coord);
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333 }
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diff changeset
334
829
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diff changeset
335 static Handle<Value>
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diff changeset
336 xnjsmb_coord_get_opacity(Handle<Object> self, coord_t *coord,
379fd510ba38 Define accessor for the opacity attribute of the coord
wycc
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diff changeset
337 const char **err) {
379fd510ba38 Define accessor for the opacity attribute of the coord
wycc
parents: 822
diff changeset
338 float opacity;
379fd510ba38 Define accessor for the opacity attribute of the coord
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339
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340 opacity = coord_get_opacity(coord);
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341 return Number::New(opacity);
379fd510ba38 Define accessor for the opacity attribute of the coord
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diff changeset
342 }
379fd510ba38 Define accessor for the opacity attribute of the coord
wycc
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diff changeset
343
843
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
344 #define cc(i) (coord_get_matrix(coord)[i])
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
345 static void
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diff changeset
346 xnjsmb_coord_set_y(Handle<Object> self, coord_t *coord, Handle<Value> value, const char **str)
2bcacd29d95f Define accessor for x and y to implement absolute location
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parents: 829
diff changeset
347 {
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diff changeset
348 Handle<Object> js_rt;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
349 redraw_man_t *rdman;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
350 co_aix y,ty;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
351 co_aix xx,yy;
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diff changeset
352
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diff changeset
353 js_rt = GET(self, "mbrt")->ToObject();
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
354 ASSERT(js_rt != NULL);
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
355 rdman = xnjsmb_rt_rdman(js_rt);
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
356
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
357
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
358 ty = value->NumberValue();
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diff changeset
359 xx = GET(self,"_x")->ToNumber()->NumberValue();
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diff changeset
360 yy = GET(self,"_y")->ToNumber()->NumberValue();
2bcacd29d95f Define accessor for x and y to implement absolute location
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361 y = ty-cc(3)*xx-cc(4)*yy;
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diff changeset
362 coord_get_matrix(coord)[5] = y;
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diff changeset
363 rdman_coord_changed(rdman, coord);
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diff changeset
364 }
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
365
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
366 static Handle<Value>
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
367 xnjsmb_coord_get_y(Handle<Object> self, coord_t *coord,
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
368 const char **err) {
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
369 co_aix y;
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diff changeset
370 co_aix xx,yy;
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diff changeset
371
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
372 xx = GET(self,"_x")->ToNumber()->NumberValue();
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diff changeset
373 yy = GET(self,"_y")->ToNumber()->NumberValue();
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diff changeset
374
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
375 y = cc(3)*xx+cc(4)*yy+cc(5);
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
376 return Number::New(y);
2bcacd29d95f Define accessor for x and y to implement absolute location
wycc
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diff changeset
377 }
2bcacd29d95f Define accessor for x and y to implement absolute location
wycc
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diff changeset
378 static void
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
379 xnjsmb_coord_set_x(Handle<Object> self, coord_t *coord, Handle<Value> value, const char **str)
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
380 {
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diff changeset
381 Handle<Object> js_rt;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
382 redraw_man_t *rdman;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
383 co_aix x,tx;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
384 co_aix xx,yy;
2bcacd29d95f Define accessor for x and y to implement absolute location
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parents: 829
diff changeset
385
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
386 xx = GET(self,"_x")->ToNumber()->NumberValue();
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
387 yy = GET(self,"_y")->ToNumber()->NumberValue();
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
388 js_rt = GET(self, "mbrt")->ToObject();
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
389 ASSERT(js_rt != NULL);
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
390 rdman = xnjsmb_rt_rdman(js_rt);
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
391
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
392 tx = value->NumberValue();
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diff changeset
393 x = tx-cc(0)*xx-cc(1)*yy;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
394 coord_get_matrix(coord)[2] = x;
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
395 rdman_coord_changed(rdman, coord);
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
396 }
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
397
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
398 static Handle<Value>
2bcacd29d95f Define accessor for x and y to implement absolute location
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diff changeset
399 xnjsmb_coord_get_x(Handle<Object> self, coord_t *coord,
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wycc
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diff changeset
400 const char **err) {
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401 co_aix x;
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402 co_aix xx,yy;
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403
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404 xx = GET(self,"_x")->ToNumber()->NumberValue();
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405 yy = GET(self,"_y")->ToNumber()->NumberValue();
2bcacd29d95f Define accessor for x and y to implement absolute location
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406
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407 x = cc(0)*xx+cc(1)*yy+cc(2);
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408 return Number::New(x);
2bcacd29d95f Define accessor for x and y to implement absolute location
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409 }
2bcacd29d95f Define accessor for x and y to implement absolute location
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410 #undef m
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411
661
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412 #include "coord-inc.h"
562
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413
684
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414 /*! \brief This function used by \ref xnjsmb_mb_rt to wrap coord object.
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415 */
666
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416 Handle<Value> export_xnjsmb_auto_coord_new(coord_t *coord) {
695
763a4e2bbd85 Return the value of ojbject to fix the crash issue
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417 return xnjsmb_auto_coord_new(coord);
666
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418 }
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419
562
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420 /*! \brief Initialize Javascript object for root coord of a runtime.
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421 *
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422 * \param js_rt is the runtime object to create the root object for.
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423 *
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424 * After the function, js_rt.root is the object for root coord in
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425 * Javascript.
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426 */
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427 void
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428 xnjsmb_coord_mkroot(Handle<Object> js_rt) {
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429 redraw_man_t *rdman;
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430 coord_t *root;
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431 Handle<Object> obj;
661
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432 static int init_flag = 0;
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433
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434 if(!init_flag) {
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435 xnjsmb_auto_coord_init();
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436 init_flag = 1;
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437 }
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 810
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438
562
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439 rdman = xnjsmb_rt_rdman(js_rt);
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440 root = rdman_get_root(rdman);
661
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441 obj = xnjsmb_auto_coord_new(root).As<Object>();
90c7726bc953 Replace part code of coord.cc by the code generated by generator
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442 SET(obj, "mbrt", js_rt);
562
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diff changeset
443
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444 SET(js_rt, "root", obj);
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445 }
684
b346e4699e55 Add more comment for JS binding
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diff changeset
446
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diff changeset
447 /* @} */