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annotate src/libmlk-core-js/core/js-drawable-stack.c @ 363:c74ab1bbedec

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js: add drawable bindings
author David Demelier <markand@malikania.fr>
date Sun, 24 Oct 2021 09:55:12 +0200
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children 15bdac29ba4b
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1 /*
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2 * js-drawable-stack.h -- core drawable_stack binding
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3 *
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4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20
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21 #include <core/alloc.h>
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22 #include <core/drawable.h>
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23
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24 #include "js-drawable-stack.h"
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25 #include "js-drawable.h"
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26
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27 #define SIGNATURE DUK_HIDDEN_SYMBOL("Mlk.DrawableStack")
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28
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29 static inline struct drawable_stack *
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30 self(duk_context *ctx)
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31 {
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32 struct drawable_stack *sf = NULL;
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33
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34 duk_push_this(ctx);
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35 duk_get_prop_string(ctx, -1, SIGNATURE);
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36 sf = duk_to_pointer(ctx, -1);
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37 duk_pop_2(ctx);
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38
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39 if (!sf)
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40 duk_error(ctx, DUK_ERR_TYPE_ERROR, "not a DrawableStack object");
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41
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42 return sf;
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43 }
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44
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45 static duk_ret_t
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46 DrawableStack_constructor(duk_context *ctx)
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47 {
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48 duk_push_this(ctx);
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49 duk_push_pointer(ctx, alloc_new0(sizeof (struct drawable_stack)));
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50 duk_put_prop_string(ctx, -2, SIGNATURE);
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51 duk_pop(ctx);
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52
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53 return 0;
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54 }
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55
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56 static duk_ret_t
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57 DrawableStack_destructor(duk_context *ctx)
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58 {
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59 struct drawable_stack *st;
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60
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61 duk_get_prop_string(ctx, 0, SIGNATURE);
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62
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63 if ((st = duk_to_pointer(ctx, -1))) {
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64 drawable_stack_finish(st);
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65 free(st);
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66 }
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67
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68 duk_pop(ctx);
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69 duk_del_prop_string(ctx, 0, SIGNATURE);
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70
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71 return 0;
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72 }
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73
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74 static duk_ret_t
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75 DrawableStack_add(duk_context *ctx)
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76 {
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77 struct drawable_stack *st = self(ctx);
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78 struct drawable *dw = js_drawable_require(ctx, 0);
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79
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80 if (drawable_stack_add(st, dw) < 0)
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81 drawable_finish(dw);
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82
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83 return 0;
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84 }
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85
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86 static duk_ret_t
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87 DrawableStack_update(duk_context *ctx)
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88 {
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89 struct drawable_stack *st = self(ctx);
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90 const unsigned int ticks = duk_require_uint(ctx, 0);
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91
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92 duk_push_uint(ctx, drawable_stack_update(st, ticks));
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93
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94 return 1;
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95 }
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96
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97 static duk_ret_t
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98 DrawableStack_draw(duk_context *ctx)
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99 {
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100 drawable_stack_draw(self(ctx));
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101
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102 return 0;
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103 }
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104
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105 static duk_function_list_entry methods[] = {
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106 { "add", DrawableStack_add, 1 },
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107 { "update", DrawableStack_update, 1 },
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108 { "draw", DrawableStack_draw, 0 },
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109 { NULL, NULL, 0 }
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110 };
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111
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112 void
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113 js_drawable_stack_bind(duk_context *ctx)
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114 {
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115 assert(ctx);
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116
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117 duk_push_c_function(ctx, DrawableStack_constructor, 0);
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118 duk_push_object(ctx);
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119 duk_put_function_list(ctx, -1, methods);
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120 duk_push_c_function(ctx, DrawableStack_destructor, 1);
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121 duk_set_finalizer(ctx, -2);
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122 duk_put_prop_string(ctx, -2, "prototype");
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123 duk_put_global_string(ctx, "DrawableStack");
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124 }