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annotate nodejs/paints.cc @ 1000:c92aabb054e2 refine_backend_if

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Declare functions correctly
author Thinker K.F. Li <thinker@codemud.net>
date Mon, 22 Nov 2010 00:42:30 +0800
parents 586e50f82c1f
children df6ee4568ca2
rev   line source
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586e50f82c1f Unify coding style tag for emacs and vim.
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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 <v8.h>
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4
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5 extern "C" {
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6 #include "mb.h"
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7 }
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8
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9 #include "mbfly_njs.h"
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10
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11 using namespace v8;
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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 /*! \defgroup xnjsmb_paints JS binding for paints
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18 * \ingroup xnjsmb
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19 *
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20 * @{
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21 */
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22
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23 /*! \page paint_gc How to manage life-cycle of paints?
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24 *
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25 * A paint is used to fill and stroke shapes. It should keep live
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26 * before all shapes being stroked/or filled by it are dead or
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27 * filled/stroked by other paints. So, every shape that uses a paint
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28 * should keep a reference to the paint. The reference are removed
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29 * when a shape is filled/or stroked by other paints.
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30 *
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31 * A paint should keep a weak reference to itself. It is used to free
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32 * resource before it being collected.
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33 */
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34 static void
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35 xnjsmb_paint_recycle(Persistent<Value> obj, void *parameter) {
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36 Persistent<Object> *paint_hdl = (Persistent<Object> *)parameter;
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37 paint_t *paint;
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38 Handle<Object> rt;
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39 redraw_man_t *rdman;
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40 int r;
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41
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42 paint = (paint_t *)UNWRAP(*paint_hdl);
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43 rt = GET(*paint_hdl, "mbrt")->ToObject();
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44 rdman = xnjsmb_rt_rdman(rt);
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45
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46 r = rdman_paint_free(rdman, paint);
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47 ASSERT(r == 0);
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48
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49 paint_hdl->Dispose();
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50 delete paint_hdl;
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51 }
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52
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53 static void
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54 xnjsmb_paint_mod(Handle<Object> self, void *paint) {
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55 Persistent<Object> *paint_hdl;
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56
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57 paint_hdl = new Persistent<Object>();
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58 *paint_hdl = Persistent<Object>::New(self);
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59
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60 paint_hdl->MakeWeak(paint_hdl, xnjsmb_paint_recycle);
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61 }
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62
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63 static void
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64 xnjsmb_paint_fill(paint_t *paint, Handle<Object> self, shape_t *sh) {
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65 Handle<Value> rt_v;
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66 Handle<Object> rt_o;
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67 Handle<Object> sh_o;
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68 redraw_man_t *rdman;
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69
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70 rt_v = GET(self, "mbrt");
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71 rt_o = rt_v->ToObject();
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72 rdman = xnjsmb_rt_rdman(rt_o);
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73
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74 rdman_paint_fill(rdman, paint, sh);
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75
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76 if(sh_get_coord(sh))
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77 rdman_shape_changed(rdman, sh);
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78
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79 sh_o = *(Persistent<Object> *)mb_prop_get(&sh->obj.props, PROP_JSOBJ);
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80 SET(sh_o, "_fill_by", self);
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81 }
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82
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83 static void
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84 xnjsmb_paint_stroke(paint_t *paint, Handle<Object> self, shape_t *sh) {
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85 Handle<Value> rt_v;
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86 Handle<Object> rt_o;
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87 Handle<Object> sh_o;
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88 redraw_man_t *rdman;
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89
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90 rt_v = GET(self, "mbrt");
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91 rt_o = rt_v->ToObject();
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92 rdman = xnjsmb_rt_rdman(rt_o);
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93
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94 rdman_paint_stroke(rdman, paint, sh);
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95
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96 if(sh_get_coord(sh))
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97 rdman_shape_changed(rdman, sh);
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98
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99 sh_o = *(Persistent<Object> *)mb_prop_get(&sh->obj.props, PROP_JSOBJ);
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100 SET(sh_o, "_stroke_by", self);
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101 }
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102
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103 static void
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104 xnjsmb_paint_color_set_color(paint_t *paint, Handle<Object> self,
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105 float r, float g, float b, float a) {
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106 Handle<Value> rt_v;
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107 Handle<Object> rt_o;
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108 redraw_man_t *rdman;
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109
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110 rt_v = GET(self, "mbrt");
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111 rt_o = rt_v->ToObject();
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112 rdman = xnjsmb_rt_rdman(rt_o);
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113
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114 paint_color_set(paint, r, g, b, a);
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115
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116 rdman_paint_changed(rdman, paint);
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117 }
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118
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119 /*! \brief Set stops for linear paint for Javascript code.
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120 */
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121 static void
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122 xnjsmb_paint_linear_set_stops(paint_t *paint, Handle<Value> stops) {
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123 Array *stops_o;
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124 Array *stop_o;
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125 int nstops;
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126 grad_stop_t *grad_stops, *old_grad_stops;
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127 int i;
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128
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129 stops_o = Array::Cast(*stops);
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130 nstops = stops_o->Length();
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131 grad_stops = (grad_stop_t *)malloc(sizeof(grad_stop_t) * nstops);
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132 ASSERT(grad_stops != NULL);
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133
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134 for(i = 0; i < nstops; i++) {
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135 stop_o = Array::Cast(*stops_o->Get(i));
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136 ASSERT(stop_o->Length() == 5);
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137 grad_stop_init(grad_stops + i,
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138 stop_o->Get(0)->ToNumber()->Value(), /* off */
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139 stop_o->Get(1)->ToNumber()->Value(), /* r */
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140 stop_o->Get(2)->ToNumber()->Value(), /* g */
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141 stop_o->Get(3)->ToNumber()->Value(), /* b */
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142 stop_o->Get(4)->ToNumber()->Value()); /* a */
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143 }
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144
733
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145 old_grad_stops = paint_linear_stops(paint, nstops, grad_stops);
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146 if(old_grad_stops)
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147 free(old_grad_stops); /* The stops, here, were allocated for
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148 * previous calling of this
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149 * function. */
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150 }
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151
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152 /*! \brief Set stops for radial paint for Javascript code.
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153 */
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154 static void
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155 xnjsmb_paint_radial_set_stops(paint_t *paint, Handle<Value> stops) {
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156 Array *stops_o;
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157 Array *stop_o;
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158 int nstops;
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159 grad_stop_t *grad_stops, *old_grad_stops;
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160 int i;
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161
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162 stops_o = Array::Cast(*stops);
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163 nstops = stops_o->Length();
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164 grad_stops = (grad_stop_t *)malloc(sizeof(grad_stop_t) * nstops);
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165 ASSERT(grad_stops != NULL);
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166
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167 for(i = 0; i < nstops; i++) {
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168 stop_o = Array::Cast(*stops_o->Get(i));
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169 ASSERT(stop_o->Length() == 5);
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170 grad_stop_init(grad_stops + i,
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171 stop_o->Get(0)->ToNumber()->Value(), /* off */
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172 stop_o->Get(1)->ToNumber()->Value(), /* r */
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173 stop_o->Get(2)->ToNumber()->Value(), /* g */
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174 stop_o->Get(3)->ToNumber()->Value(), /* b */
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175 stop_o->Get(4)->ToNumber()->Value()); /* a */
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176 }
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177
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178 old_grad_stops = paint_radial_stops(paint, nstops, grad_stops);
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179 if(old_grad_stops)
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180 free(old_grad_stops); /* The stops, here, were allocated for
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181 * previous calling of this
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182 * function. */
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183 }
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184
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185 #include "paints-inc.h"
568
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186
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187 /*! \defgroup xnjsmb_paints_cons Constructor of paints
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188 *
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189 * @{
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190 */
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191 paint_t *
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192 xnjsmb_paint_color_new(njs_runtime_t *rt,
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193 float r, float g, float b, float a,
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194 const char **err) {
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195 paint_t *paint;
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196 redraw_man_t *rdman;
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197
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198 rdman = X_njs_MB_rdman(rt);
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199 paint = rdman_paint_color_new(rdman, r, g, b, a);
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200 if(paint == NULL) {
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201 *err = "can not allocate a paint_color_t";
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202 return NULL;
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203 }
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204
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205 return paint;
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206 }
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207
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208 paint_t *
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209 xnjsmb_paint_image_new(njs_runtime_t *rt, mb_img_data_t *img,
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210 const char **err) {
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211 paint_t *paint;
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212 redraw_man_t *rdman;
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213
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214 rdman = X_njs_MB_rdman(rt);
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215 paint = rdman_paint_image_new(rdman, img);
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216 if(paint == NULL) {
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217 *err = "can not allocate a paint_image_t";
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218 return NULL;
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219 }
636
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220
687
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221 return paint;
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222 }
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223
733
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224 paint_t *
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225 xnjsmb_paint_linear_new(njs_runtime_t *rt,
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diff changeset
226 float x1, float y1, float x2, float y2,
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diff changeset
227 const char **err) {
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diff changeset
228 paint_t *paint;
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diff changeset
229 redraw_man_t *rdman;
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diff changeset
230
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231 rdman = X_njs_MB_rdman(rt);
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232 paint = rdman_paint_linear_new(rdman, x1, y1, x2, y2);
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233 if(paint == NULL) {
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234 *err = "can not allocate a paint_linear_t";
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235 return NULL;
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diff changeset
236 }
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237
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238 return paint;
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239 }
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240
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diff changeset
241 paint_t *
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diff changeset
242 xnjsmb_paint_radial_new(njs_runtime_t *rt,
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diff changeset
243 float cx, float cy, float r,
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diff changeset
244 const char **err) {
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diff changeset
245 paint_t *paint;
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diff changeset
246 redraw_man_t *rdman;
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247
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248 rdman = X_njs_MB_rdman(rt);
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249 paint = rdman_paint_radial_new(rdman, cx, cy, r);
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diff changeset
250 if(paint == NULL) {
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251 *err = "can not allocate a paint_radial_t";
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diff changeset
252 return NULL;
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diff changeset
253 }
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254
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255 return paint;
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256 }
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257
687
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258 /* @} */
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259
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260 /*! \defgroup xnjsmb_paints_export Exported wrapper maker for paints
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261 *
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262 * These functions are used by MB runtime to wrap C paints to JS
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263 * objects.
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264 *
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265 * @{
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266 */
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267 Handle<Value>
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268 export_xnjsmb_auto_paint_color_new(paint_t *paint) {
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269 Handle<Value> ret;
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270
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271 ret = xnjsmb_auto_paint_color_new(paint);
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272
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273 return ret;
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274 }
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275
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276 Handle<Value>
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277 export_xnjsmb_auto_paint_image_new(paint_t *paint) {
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278 Handle<Value> ret;
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279
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280 ret = xnjsmb_auto_paint_image_new(paint);
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281
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282 return ret;
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283 }
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284
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285 Handle<Value>
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286 export_xnjsmb_auto_paint_linear_new(paint_t *paint) {
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287 Handle<Value> ret;
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288
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289 ret = xnjsmb_auto_paint_linear_new(paint);
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290
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291 return ret;
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292 }
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293
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294 Handle<Value>
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295 export_xnjsmb_auto_paint_radial_new(paint_t *paint) {
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296 Handle<Value> ret;
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297
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298 ret = xnjsmb_auto_paint_radial_new(paint);
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299
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300 return ret;
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301 }
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302 /* @} */
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303
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304 /*! \brief Initialize paints for mbfly.
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305 *
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306 * This function is called by init() in mbfly_njs.cc when the module
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307 * being loaded.
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308 */
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309 void xnjsmb_paints_init_mb_rt_temp(Handle<FunctionTemplate> rt_temp) {
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310 static int init_flag = 0;
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311 Handle<ObjectTemplate> rt_proto_temp;
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312
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313 if(!init_flag) {
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314 xnjsmb_auto_paint_init();
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315 xnjsmb_auto_paint_color_init();
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316 xnjsmb_auto_paint_image_init();
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317 xnjsmb_auto_paint_linear_init();
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318 xnjsmb_auto_paint_radial_init();
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319
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320 init_flag = 1;
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321 }
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322 }
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323
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324 /* @} */