Mercurial > MadButterfly

annotate nodejs/paints.cc @ 771:01b514800fbe

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Fix logic error of checking clear flag for paint.
author Thinker K.F. Li <thinker@codemud.net>
date Sun, 29 Aug 2010 19:06:24 +0800
parents be0e02948c1d
children 586e50f82c1f
rev   line source
567
a12c3448afb6 Add dummy paint_color templates
Thinker K.F. Li <thinker@branda.to>
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diff changeset
1 #include <v8.h>
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2
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3 extern "C" {
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4 #include "mb.h"
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5 }
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6
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7 #include "mbfly_njs.h"
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8
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9 using namespace v8;
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10
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11 #ifndef ASSERT
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12 #define ASSERT(x)
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13 #endif
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14
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15 /*! \defgroup xnjsmb_paints JS binding for paints
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16 * \ingroup xnjsmb
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17 *
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18 * @{
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19 */
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20
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21 /*! \page paint_gc How to manage life-cycle of paints?
a49358b040b5 Doc on how to manage life-cycle of paints for JS
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22 *
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23 * A paint is used to fill and stroke shapes. It should keep live
a49358b040b5 Doc on how to manage life-cycle of paints for JS
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24 * before all shapes being stroked/or filled by it are dead or
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25 * filled/stroked by other paints. So, every shape that uses a paint
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26 * should keep a reference to the paint. The reference are removed
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27 * when a shape is filled/or stroked by other paints.
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28 *
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29 * A paint should keep a weak reference to itself. It is used to free
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30 * resource before it being collected.
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31 */
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32 static void
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33 xnjsmb_paint_recycle(Persistent<Value> obj, void *parameter) {
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34 Persistent<Object> *paint_hdl = (Persistent<Object> *)parameter;
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35 paint_t *paint;
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36 Handle<Object> rt;
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37 redraw_man_t *rdman;
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38 int r;
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39
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40 paint = (paint_t *)UNWRAP(*paint_hdl);
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41 rt = GET(*paint_hdl, "mbrt")->ToObject();
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42 rdman = xnjsmb_rt_rdman(rt);
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43
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44 r = rdman_paint_free(rdman, paint);
01b514800fbe Fix logic error of checking clear flag for paint.
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45 ASSERT(r == 0);
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46
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47 paint_hdl->Dispose();
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48 delete paint_hdl;
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49 }
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50
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51 static void
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52 xnjsmb_paint_mod(Handle<Object> self, void *paint) {
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53 Persistent<Object> *paint_hdl;
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54
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55 paint_hdl = new Persistent<Object>();
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56 *paint_hdl = Persistent<Object>::New(self);
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57
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58 paint_hdl->MakeWeak(paint_hdl, xnjsmb_paint_recycle);
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59 }
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60
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61 static void
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62 xnjsmb_paint_fill(paint_t *paint, Handle<Object> self, shape_t *sh) {
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63 Handle<Value> rt_v;
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64 Handle<Object> rt_o;
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65 Handle<Object> sh_o;
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66 redraw_man_t *rdman;
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67
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68 rt_v = GET(self, "mbrt");
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69 rt_o = rt_v->ToObject();
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70 rdman = xnjsmb_rt_rdman(rt_o);
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71
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72 rdman_paint_fill(rdman, paint, sh);
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73
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74 if(sh_get_coord(sh))
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75 rdman_shape_changed(rdman, sh);
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76
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77 sh_o = *(Persistent<Object> *)mb_prop_get(&sh->obj.props, PROP_JSOBJ);
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78 SET(sh_o, "_fill_by", self);
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79 }
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80
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81 static void
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82 xnjsmb_paint_stroke(paint_t *paint, Handle<Object> self, shape_t *sh) {
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83 Handle<Value> rt_v;
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84 Handle<Object> rt_o;
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85 Handle<Object> sh_o;
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86 redraw_man_t *rdman;
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87
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88 rt_v = GET(self, "mbrt");
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89 rt_o = rt_v->ToObject();
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90 rdman = xnjsmb_rt_rdman(rt_o);
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91
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92 rdman_paint_stroke(rdman, paint, sh);
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93
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94 if(sh_get_coord(sh))
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95 rdman_shape_changed(rdman, sh);
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96
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97 sh_o = *(Persistent<Object> *)mb_prop_get(&sh->obj.props, PROP_JSOBJ);
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98 SET(sh_o, "_stroke_by", self);
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99 }
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100
699
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101 static void
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102 xnjsmb_paint_color_set_color(paint_t *paint, Handle<Object> self,
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103 float r, float g, float b, float a) {
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104 Handle<Value> rt_v;
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105 Handle<Object> rt_o;
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106 redraw_man_t *rdman;
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107
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108 rt_v = GET(self, "mbrt");
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109 rt_o = rt_v->ToObject();
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110 rdman = xnjsmb_rt_rdman(rt_o);
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111
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112 paint_color_set(paint, r, g, b, a);
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113
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114 rdman_paint_changed(rdman, paint);
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115 }
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116
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117 /*! \brief Set stops for linear paint for Javascript code.
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118 */
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119 static void
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120 xnjsmb_paint_linear_set_stops(paint_t *paint, Handle<Value> stops) {
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121 Array *stops_o;
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122 Array *stop_o;
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123 int nstops;
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124 grad_stop_t *grad_stops, *old_grad_stops;
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125 int i;
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126
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127 stops_o = Array::Cast(*stops);
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128 nstops = stops_o->Length();
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129 grad_stops = (grad_stop_t *)malloc(sizeof(grad_stop_t) * nstops);
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130 ASSERT(grad_stops != NULL);
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131
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132 for(i = 0; i < nstops; i++) {
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133 stop_o = Array::Cast(*stops_o->Get(i));
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134 ASSERT(stop_o->Length() == 5);
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135 grad_stop_init(grad_stops + i,
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136 stop_o->Get(0)->ToNumber()->Value(), /* off */
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137 stop_o->Get(1)->ToNumber()->Value(), /* r */
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138 stop_o->Get(2)->ToNumber()->Value(), /* g */
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139 stop_o->Get(3)->ToNumber()->Value(), /* b */
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140 stop_o->Get(4)->ToNumber()->Value()); /* a */
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141 }
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142
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143 old_grad_stops = paint_linear_stops(paint, nstops, grad_stops);
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144 if(old_grad_stops)
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145 free(old_grad_stops); /* The stops, here, were allocated for
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146 * previous calling of this
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147 * function. */
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148 }
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149
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150 /*! \brief Set stops for radial paint for Javascript code.
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151 */
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152 static void
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153 xnjsmb_paint_radial_set_stops(paint_t *paint, Handle<Value> stops) {
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154 Array *stops_o;
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155 Array *stop_o;
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156 int nstops;
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157 grad_stop_t *grad_stops, *old_grad_stops;
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158 int i;
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159
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160 stops_o = Array::Cast(*stops);
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161 nstops = stops_o->Length();
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162 grad_stops = (grad_stop_t *)malloc(sizeof(grad_stop_t) * nstops);
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163 ASSERT(grad_stops != NULL);
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164
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165 for(i = 0; i < nstops; i++) {
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166 stop_o = Array::Cast(*stops_o->Get(i));
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167 ASSERT(stop_o->Length() == 5);
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168 grad_stop_init(grad_stops + i,
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169 stop_o->Get(0)->ToNumber()->Value(), /* off */
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170 stop_o->Get(1)->ToNumber()->Value(), /* r */
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171 stop_o->Get(2)->ToNumber()->Value(), /* g */
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172 stop_o->Get(3)->ToNumber()->Value(), /* b */
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173 stop_o->Get(4)->ToNumber()->Value()); /* a */
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174 }
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175
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176 old_grad_stops = paint_radial_stops(paint, nstops, grad_stops);
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177 if(old_grad_stops)
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178 free(old_grad_stops); /* The stops, here, were allocated for
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179 * previous calling of this
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180 * function. */
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181 }
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182
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183 #include "paints-inc.h"
568
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184
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185 /*! \defgroup xnjsmb_paints_cons Constructor of paints
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186 *
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187 * @{
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188 */
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189 paint_t *
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190 xnjsmb_paint_color_new(njs_runtime_t *rt,
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191 float r, float g, float b, float a,
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192 const char **err) {
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193 paint_t *paint;
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194 redraw_man_t *rdman;
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195
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196 rdman = X_njs_MB_rdman(rt);
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197 paint = rdman_paint_color_new(rdman, r, g, b, a);
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198 if(paint == NULL) {
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199 *err = "can not allocate a paint_color_t";
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200 return NULL;
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201 }
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202
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203 return paint;
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204 }
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205
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206 paint_t *
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207 xnjsmb_paint_image_new(njs_runtime_t *rt, mb_img_data_t *img,
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208 const char **err) {
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209 paint_t *paint;
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210 redraw_man_t *rdman;
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211
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212 rdman = X_njs_MB_rdman(rt);
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213 paint = rdman_paint_image_new(rdman, img);
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214 if(paint == NULL) {
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215 *err = "can not allocate a paint_image_t";
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216 return NULL;
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217 }
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218
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219 return paint;
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220 }
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221
733
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222 paint_t *
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223 xnjsmb_paint_linear_new(njs_runtime_t *rt,
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224 float x1, float y1, float x2, float y2,
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225 const char **err) {
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226 paint_t *paint;
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227 redraw_man_t *rdman;
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228
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229 rdman = X_njs_MB_rdman(rt);
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230 paint = rdman_paint_linear_new(rdman, x1, y1, x2, y2);
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231 if(paint == NULL) {
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232 *err = "can not allocate a paint_linear_t";
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233 return NULL;
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234 }
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235
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236 return paint;
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237 }
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238
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diff changeset
239 paint_t *
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240 xnjsmb_paint_radial_new(njs_runtime_t *rt,
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diff changeset
241 float cx, float cy, float r,
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diff changeset
242 const char **err) {
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diff changeset
243 paint_t *paint;
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diff changeset
244 redraw_man_t *rdman;
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245
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246 rdman = X_njs_MB_rdman(rt);
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247 paint = rdman_paint_radial_new(rdman, cx, cy, r);
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248 if(paint == NULL) {
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249 *err = "can not allocate a paint_radial_t";
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250 return NULL;
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251 }
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252
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253 return paint;
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254 }
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255
687
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256 /* @} */
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257
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258 /*! \defgroup xnjsmb_paints_export Exported wrapper maker for paints
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259 *
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260 * These functions are used by MB runtime to wrap C paints to JS
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261 * objects.
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262 *
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263 * @{
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264 */
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265 Handle<Value>
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266 export_xnjsmb_auto_paint_color_new(paint_t *paint) {
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267 Handle<Value> ret;
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268
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269 ret = xnjsmb_auto_paint_color_new(paint);
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270
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271 return ret;
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272 }
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273
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274 Handle<Value>
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275 export_xnjsmb_auto_paint_image_new(paint_t *paint) {
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276 Handle<Value> ret;
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277
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278 ret = xnjsmb_auto_paint_image_new(paint);
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279
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280 return ret;
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281 }
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282
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283 Handle<Value>
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284 export_xnjsmb_auto_paint_linear_new(paint_t *paint) {
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285 Handle<Value> ret;
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286
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287 ret = xnjsmb_auto_paint_linear_new(paint);
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288
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289 return ret;
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290 }
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291
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292 Handle<Value>
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293 export_xnjsmb_auto_paint_radial_new(paint_t *paint) {
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294 Handle<Value> ret;
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295
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296 ret = xnjsmb_auto_paint_radial_new(paint);
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297
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298 return ret;
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299 }
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300 /* @} */
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301
637
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302 /*! \brief Initialize paints for mbfly.
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303 *
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304 * This function is called by init() in mbfly_njs.cc when the module
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305 * being loaded.
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306 */
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307 void xnjsmb_paints_init_mb_rt_temp(Handle<FunctionTemplate> rt_temp) {
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308 static int init_flag = 0;
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309 Handle<ObjectTemplate> rt_proto_temp;
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310
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311 if(!init_flag) {
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312 xnjsmb_auto_paint_init();
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313 xnjsmb_auto_paint_color_init();
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314 xnjsmb_auto_paint_image_init();
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315 xnjsmb_auto_paint_linear_init();
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316 xnjsmb_auto_paint_radial_init();
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317
567
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318 init_flag = 1;
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319 }
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320 }
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321
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322 /* @} */