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annotate nuklear_ui/nuklear_sdl_gles2.h @ 1971:80920c21bb52

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Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
author Michael Pavone <pavone@retrodev.com>
date Fri, 08 May 2020 11:40:30 -0700
parents e07fc3d473b2
children 579fe3f6fe76
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1 /*
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2 * Nuklear - 1.40.8 - public domain
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3 * no warrenty implied; use at your own risk.
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4 * authored from 2015-2017 by Micha Mettke
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5 * emscripten from 2016 by Chris Willcocks
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6 * OpenGL ES 2.0 from 2017 by Dmitry Hrabrov a.k.a. DeXPeriX
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7 */
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8 /*
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9 * ==============================================================
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10 *
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11 * API
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12 *
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13 * ===============================================================
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14 */
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15 #ifndef NK_SDL_GLES2_H_
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16 #define NK_SDL_GLES2_H_
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17
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18 #include <SDL.h>
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19 #ifndef DISABLE_OPENGL
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20 #ifdef USE_GLES
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21 #include <SDL_opengles2.h>
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22 #else
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23 #include <GL/glew.h>
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24 #endif
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25 #endif
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26
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27
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28 NK_API struct nk_context* nk_sdl_init(SDL_Window *win);
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29 NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas);
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30 NK_API void nk_sdl_font_stash_end(void);
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31 NK_API int nk_sdl_handle_event(SDL_Event *evt);
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32 NK_API void nk_sdl_render(enum nk_anti_aliasing , int max_vertex_buffer, int max_element_buffer);
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33 NK_API void nk_sdl_shutdown(void);
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34 NK_API void nk_sdl_device_destroy(void);
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35 NK_API void nk_sdl_device_create(void);
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36
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37 #endif
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38
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39 /*
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40 * ==============================================================
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41 *
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42 * IMPLEMENTATION
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43 *
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44 * ===============================================================
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45 */
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46 #ifdef NK_SDL_GLES2_IMPLEMENTATION
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47
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48 #include <string.h>
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49
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50 #ifndef DISABLE_OPENGL
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51 struct nk_sdl_device {
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52 struct nk_buffer cmds;
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53 struct nk_draw_null_texture null;
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54 GLuint vbo, ebo;
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55 GLuint prog;
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56 GLuint vert_shdr;
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57 GLuint frag_shdr;
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58 GLint attrib_pos;
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59 GLint attrib_uv;
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60 GLint attrib_col;
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61 GLint uniform_tex;
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62 GLint uniform_proj;
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63 GLuint font_tex;
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64 GLsizei vs;
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65 size_t vp, vt, vc;
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66 };
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67
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68 struct nk_sdl_vertex {
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69 GLfloat position[2];
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70 GLfloat uv[2];
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71 nk_byte col[4];
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72 };
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73 #endif
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75 static struct nk_sdl {
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76 SDL_Window *win;
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77 #ifndef DISABLE_OPENGL
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78 struct nk_sdl_device ogl;
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79 #endif
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80 struct nk_context ctx;
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81 struct nk_font_atlas atlas;
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82 } sdl;
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83
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84 #ifdef USE_GLES
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85 #define NK_SHADER_VERSION "#version 100\n"
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86 #define DECLARE_PRECISION "precision mediump float;\n"
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87 #else
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88 #define NK_SHADER_VERSION "#version 110\n"
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89 #define DECLARE_PRECISION
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90 #endif
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91
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92 #ifndef DISABLE_OPENGL
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93 NK_API void
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94 nk_sdl_device_create(void)
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95 {
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96 GLint status;
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97 static const GLchar *vertex_shader =
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98 NK_SHADER_VERSION
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99 "uniform mat4 ProjMtx;\n"
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100 "attribute vec2 Position;\n"
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101 "attribute vec2 TexCoord;\n"
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102 "attribute vec4 Color;\n"
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103 "varying vec2 Frag_UV;\n"
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104 "varying vec4 Frag_Color;\n"
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105 "void main() {\n"
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106 " Frag_UV = TexCoord;\n"
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107 " Frag_Color = Color;\n"
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108 " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n"
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109 "}\n";
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110 static const GLchar *fragment_shader =
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111 NK_SHADER_VERSION
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112 DECLARE_PRECISION
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113 "uniform sampler2D Texture;\n"
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114 "varying vec2 Frag_UV;\n"
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115 "varying vec4 Frag_Color;\n"
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116 "void main(){\n"
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117 " gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV);\n"
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118 "}\n";
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119
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120 struct nk_sdl_device *dev = &sdl.ogl;
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121
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122 nk_buffer_init_default(&dev->cmds);
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123 dev->prog = glCreateProgram();
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124 dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER);
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125 dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER);
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126 glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0);
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127 glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0);
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128 glCompileShader(dev->vert_shdr);
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129 glCompileShader(dev->frag_shdr);
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130 glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status);
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131 assert(status == GL_TRUE);
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132 glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status);
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133 assert(status == GL_TRUE);
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134 glAttachShader(dev->prog, dev->vert_shdr);
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135 glAttachShader(dev->prog, dev->frag_shdr);
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136 glLinkProgram(dev->prog);
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137 glGetProgramiv(dev->prog, GL_LINK_STATUS, &status);
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138 assert(status == GL_TRUE);
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139
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140
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141 dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture");
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142 dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx");
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143 dev->attrib_pos = glGetAttribLocation(dev->prog, "Position");
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144 dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord");
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145 dev->attrib_col = glGetAttribLocation(dev->prog, "Color");
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146 {
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147 dev->vs = sizeof(struct nk_sdl_vertex);
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148 dev->vp = offsetof(struct nk_sdl_vertex, position);
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149 dev->vt = offsetof(struct nk_sdl_vertex, uv);
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150 dev->vc = offsetof(struct nk_sdl_vertex, col);
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151
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diff changeset
152 /* Allocate buffers */
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153 glGenBuffers(1, &dev->vbo);
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154 glGenBuffers(1, &dev->ebo);
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155 }
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156 glBindTexture(GL_TEXTURE_2D, 0);
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157 glBindBuffer(GL_ARRAY_BUFFER, 0);
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158 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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159 }
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160
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161 NK_INTERN void
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162 nk_sdl_device_upload_atlas(const void *image, int width, int height)
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163 {
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164 struct nk_sdl_device *dev = &sdl.ogl;
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165 glGenTextures(1, &dev->font_tex);
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166 glBindTexture(GL_TEXTURE_2D, dev->font_tex);
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167 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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168 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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169 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0,
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170 GL_RGBA, GL_UNSIGNED_BYTE, image);
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171 }
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172
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173 NK_API void
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174 nk_sdl_device_destroy(void)
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175 {
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176 struct nk_sdl_device *dev = &sdl.ogl;
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177 glDetachShader(dev->prog, dev->vert_shdr);
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178 glDetachShader(dev->prog, dev->frag_shdr);
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179 glDeleteShader(dev->vert_shdr);
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180 glDeleteShader(dev->frag_shdr);
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181 glDeleteProgram(dev->prog);
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182 glDeleteTextures(1, &dev->font_tex);
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183 glDeleteBuffers(1, &dev->vbo);
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184 glDeleteBuffers(1, &dev->ebo);
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185 nk_buffer_free(&dev->cmds);
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186 }
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187
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188 NK_API void
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189 nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
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190 {
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191 struct nk_sdl_device *dev = &sdl.ogl;
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192 int width, height;
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193 int display_width, display_height;
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194 struct nk_vec2 scale;
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195 GLfloat ortho[4][4] = {
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196 {2.0f, 0.0f, 0.0f, 0.0f},
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197 {0.0f,-2.0f, 0.0f, 0.0f},
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198 {0.0f, 0.0f,-1.0f, 0.0f},
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199 {-1.0f,1.0f, 0.0f, 1.0f},
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200 };
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201 SDL_GetWindowSize(sdl.win, &width, &height);
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202 SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height);
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203 ortho[0][0] /= (GLfloat)width;
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204 ortho[1][1] /= (GLfloat)height;
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205
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206 scale.x = (float)display_width/(float)width;
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207 scale.y = (float)display_height/(float)height;
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208
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diff changeset
209 /* setup global state */
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210 glViewport(0,0,display_width,display_height);
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diff changeset
211 glEnable(GL_BLEND);
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212 glBlendEquation(GL_FUNC_ADD);
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213 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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214 glDisable(GL_CULL_FACE);
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215 glDisable(GL_DEPTH_TEST);
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216 glEnable(GL_SCISSOR_TEST);
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217 glActiveTexture(GL_TEXTURE0);
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diff changeset
218
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diff changeset
219 /* setup program */
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220 glUseProgram(dev->prog);
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221 glUniform1i(dev->uniform_tex, 0);
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diff changeset
222 glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]);
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223 {
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diff changeset
224 /* convert from command queue into draw list and draw to screen */
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diff changeset
225 const struct nk_draw_command *cmd;
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226 void *vertices, *elements;
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227 const nk_draw_index *offset = NULL;
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diff changeset
228
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diff changeset
229 /* Bind buffers */
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230 glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
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diff changeset
231 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
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diff changeset
232
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diff changeset
233 {
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diff changeset
234 /* buffer setup */
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diff changeset
235 glEnableVertexAttribArray((GLuint)dev->attrib_pos);
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diff changeset
236 glEnableVertexAttribArray((GLuint)dev->attrib_uv);
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diff changeset
237 glEnableVertexAttribArray((GLuint)dev->attrib_col);
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diff changeset
238
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diff changeset
239 glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vp);
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diff changeset
240 glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vt);
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diff changeset
241 glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, dev->vs, (void*)dev->vc);
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diff changeset
242 }
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diff changeset
243
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diff changeset
244 glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW);
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diff changeset
245 glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW);
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diff changeset
246
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diff changeset
247 /* load vertices/elements directly into vertex/element buffer */
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diff changeset
248 vertices = malloc((size_t)max_vertex_buffer);
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diff changeset
249 elements = malloc((size_t)max_element_buffer);
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diff changeset
250 {
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diff changeset
251 /* fill convert configuration */
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diff changeset
252 struct nk_convert_config config;
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253 static const struct nk_draw_vertex_layout_element vertex_layout[] = {
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diff changeset
254 {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)},
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diff changeset
255 {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)},
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256 {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)},
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257 {NK_VERTEX_LAYOUT_END}
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diff changeset
258 };
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diff changeset
259 NK_MEMSET(&config, 0, sizeof(config));
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diff changeset
260 config.vertex_layout = vertex_layout;
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diff changeset
261 config.vertex_size = sizeof(struct nk_sdl_vertex);
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diff changeset
262 config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex);
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diff changeset
263 config.null = dev->null;
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diff changeset
264 config.circle_segment_count = 22;
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diff changeset
265 config.curve_segment_count = 22;
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diff changeset
266 config.arc_segment_count = 22;
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diff changeset
267 config.global_alpha = 1.0f;
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diff changeset
268 config.shape_AA = AA;
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diff changeset
269 config.line_AA = AA;
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diff changeset
270
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diff changeset
271 /* setup buffers to load vertices and elements */
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diff changeset
272 {struct nk_buffer vbuf, ebuf;
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273 nk_buffer_init_fixed(&vbuf, vertices, (nk_size)max_vertex_buffer);
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diff changeset
274 nk_buffer_init_fixed(&ebuf, elements, (nk_size)max_element_buffer);
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275 nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);}
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diff changeset
276 }
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diff changeset
277 glBufferSubData(GL_ARRAY_BUFFER, 0, (size_t)max_vertex_buffer, vertices);
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diff changeset
278 glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, (size_t)max_element_buffer, elements);
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diff changeset
279 free(vertices);
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diff changeset
280 free(elements);
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diff changeset
281
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diff changeset
282 /* iterate over and execute each draw command */
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diff changeset
283 nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds) {
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diff changeset
284 if (!cmd->elem_count) continue;
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diff changeset
285 glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
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diff changeset
286 glScissor((GLint)(cmd->clip_rect.x * scale.x),
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diff changeset
287 (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
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288 (GLint)(cmd->clip_rect.w * scale.x),
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diff changeset
289 (GLint)(cmd->clip_rect.h * scale.y));
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diff changeset
290 glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
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diff changeset
291 offset += cmd->elem_count;
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diff changeset
292 }
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diff changeset
293 nk_clear(&sdl.ctx);
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diff changeset
294 }
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diff changeset
295
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diff changeset
296 glUseProgram(0);
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diff changeset
297 glBindBuffer(GL_ARRAY_BUFFER, 0);
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diff changeset
298 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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diff changeset
299
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diff changeset
300 glDisable(GL_BLEND);
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diff changeset
301 glDisable(GL_SCISSOR_TEST);
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302 }
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303 #endif
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304
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305 static void
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306 nk_sdl_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
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diff changeset
307 {
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diff changeset
308 const char *text = SDL_GetClipboardText();
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diff changeset
309 if (text) nk_textedit_paste(edit, text, nk_strlen(text));
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310 (void)usr;
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311 }
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diff changeset
312
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diff changeset
313 static void
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diff changeset
314 nk_sdl_clipbard_copy(nk_handle usr, const char *text, int len)
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diff changeset
315 {
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diff changeset
316 char *str = 0;
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diff changeset
317 (void)usr;
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diff changeset
318 if (!len) return;
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diff changeset
319 str = (char*)malloc((size_t)len+1);
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diff changeset
320 if (!str) return;
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diff changeset
321 memcpy(str, text, (size_t)len);
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diff changeset
322 str[len] = '\0';
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diff changeset
323 SDL_SetClipboardText(str);
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diff changeset
324 free(str);
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diff changeset
325 }
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diff changeset
326
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diff changeset
327 NK_API struct nk_context*
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diff changeset
328 nk_sdl_init(SDL_Window *win)
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diff changeset
329 {
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diff changeset
330 sdl.win = win;
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diff changeset
331 nk_init_default(&sdl.ctx, 0);
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diff changeset
332 sdl.ctx.clip.copy = nk_sdl_clipbard_copy;
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diff changeset
333 sdl.ctx.clip.paste = nk_sdl_clipbard_paste;
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diff changeset
334 sdl.ctx.clip.userdata = nk_handle_ptr(0);
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diff changeset
335 return &sdl.ctx;
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diff changeset
336 }
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diff changeset
337
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diff changeset
338 #ifndef DISABLE_OPENGL
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339 NK_API void
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diff changeset
340 nk_sdl_font_stash_begin(struct nk_font_atlas **atlas)
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diff changeset
341 {
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diff changeset
342 nk_font_atlas_init_default(&sdl.atlas);
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diff changeset
343 nk_font_atlas_begin(&sdl.atlas);
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diff changeset
344 *atlas = &sdl.atlas;
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345 }
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diff changeset
346
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diff changeset
347 NK_API void
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diff changeset
348 nk_sdl_font_stash_end(void)
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diff changeset
349 {
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diff changeset
350 const void *image; int w, h;
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diff changeset
351 image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
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diff changeset
352 nk_sdl_device_upload_atlas(image, w, h);
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diff changeset
353 nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null);
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diff changeset
354 if (sdl.atlas.default_font)
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diff changeset
355 nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle);
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diff changeset
356
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diff changeset
357 }
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diff changeset
358 #endif
1474
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diff changeset
359
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diff changeset
360 NK_API int
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diff changeset
361 nk_sdl_handle_event(SDL_Event *evt)
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diff changeset
362 {
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diff changeset
363 struct nk_context *ctx = &sdl.ctx;
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diff changeset
364 if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) {
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diff changeset
365 /* key events */
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diff changeset
366 int down = evt->type == SDL_KEYDOWN;
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diff changeset
367 const Uint8* state = SDL_GetKeyboardState(0);
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diff changeset
368 SDL_Keycode sym = evt->key.keysym.sym;
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diff changeset
369 if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT)
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diff changeset
370 nk_input_key(ctx, NK_KEY_SHIFT, down);
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diff changeset
371 else if (sym == SDLK_DELETE)
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diff changeset
372 nk_input_key(ctx, NK_KEY_DEL, down);
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diff changeset
373 else if (sym == SDLK_RETURN)
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diff changeset
374 nk_input_key(ctx, NK_KEY_ENTER, down);
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diff changeset
375 else if (sym == SDLK_TAB)
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diff changeset
376 nk_input_key(ctx, NK_KEY_TAB, down);
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diff changeset
377 else if (sym == SDLK_BACKSPACE)
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diff changeset
378 nk_input_key(ctx, NK_KEY_BACKSPACE, down);
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diff changeset
379 else if (sym == SDLK_HOME) {
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diff changeset
380 nk_input_key(ctx, NK_KEY_TEXT_START, down);
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diff changeset
381 nk_input_key(ctx, NK_KEY_SCROLL_START, down);
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diff changeset
382 } else if (sym == SDLK_END) {
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diff changeset
383 nk_input_key(ctx, NK_KEY_TEXT_END, down);
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parents:
diff changeset
384 nk_input_key(ctx, NK_KEY_SCROLL_END, down);
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parents:
diff changeset
385 } else if (sym == SDLK_PAGEDOWN) {
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diff changeset
386 nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down);
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diff changeset
387 } else if (sym == SDLK_PAGEUP) {
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diff changeset
388 nk_input_key(ctx, NK_KEY_SCROLL_UP, down);
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parents:
diff changeset
389 } else if (sym == SDLK_z)
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diff changeset
390 nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
391 else if (sym == SDLK_r)
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diff changeset
392 nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
393 else if (sym == SDLK_c)
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diff changeset
394 nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
395 else if (sym == SDLK_v)
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diff changeset
396 nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
397 else if (sym == SDLK_x)
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diff changeset
398 nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
399 else if (sym == SDLK_b)
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diff changeset
400 nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
401 else if (sym == SDLK_e)
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parents:
diff changeset
402 nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
403 else if (sym == SDLK_UP)
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parents:
diff changeset
404 nk_input_key(ctx, NK_KEY_UP, down);
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parents:
diff changeset
405 else if (sym == SDLK_DOWN)
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parents:
diff changeset
406 nk_input_key(ctx, NK_KEY_DOWN, down);
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parents:
diff changeset
407 else if (sym == SDLK_LEFT) {
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
408 if (state[SDL_SCANCODE_LCTRL])
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409 nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
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410 else nk_input_key(ctx, NK_KEY_LEFT, down);
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411 } else if (sym == SDLK_RIGHT) {
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412 if (state[SDL_SCANCODE_LCTRL])
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413 nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
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414 else nk_input_key(ctx, NK_KEY_RIGHT, down);
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415 } else return 0;
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416 return 1;
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417 } else if (evt->type == SDL_CONTROLLERBUTTONDOWN || evt->type == SDL_CONTROLLERBUTTONUP) {
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418 int down = evt->type == SDL_CONTROLLERBUTTONDOWN;
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419 if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_DPAD_UP) {
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420 nk_input_key(ctx, NK_KEY_UP, down);
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421 } else if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_DPAD_DOWN) {
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422 nk_input_key(ctx, NK_KEY_DOWN, down);
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423 } else if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_A || evt->cbutton.button == SDL_CONTROLLER_BUTTON_START) {
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424 nk_input_key(ctx, NK_KEY_ENTER, down);
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425 }
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426 } else if (evt->type == SDL_CONTROLLERAXISMOTION) {
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427 if (evt->caxis.axis == SDL_CONTROLLER_AXIS_LEFTY || evt->caxis.axis == SDL_CONTROLLER_AXIS_RIGHTY) {
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428 int down = abs(evt->caxis.value) > 2000;
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429 if (evt->caxis.value >= 0) {
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430 if (ctx->input.keyboard.keys[NK_KEY_UP].down) {
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431 nk_input_key(ctx, NK_KEY_UP, 0);
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432 }
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433 nk_input_key(ctx, NK_KEY_DOWN, down);
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434 } else {
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435 if (ctx->input.keyboard.keys[NK_KEY_DOWN].down) {
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436 nk_input_key(ctx, NK_KEY_DOWN, 0);
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diff changeset
437 }
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438 nk_input_key(ctx, NK_KEY_UP, down);
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439 }
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440 }
1474
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441 } else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) {
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442 /* mouse button */
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443 int down = evt->type == SDL_MOUSEBUTTONDOWN;
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444 const int x = evt->button.x, y = evt->button.y;
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445 if (evt->button.button == SDL_BUTTON_LEFT) {
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446 if (evt->button.clicks > 1)
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447 nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down);
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448 nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
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449 } else if (evt->button.button == SDL_BUTTON_MIDDLE)
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450 nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
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451 else if (evt->button.button == SDL_BUTTON_RIGHT)
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diff changeset
452 nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
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453 return 1;
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454 } else if (evt->type == SDL_MOUSEMOTION) {
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diff changeset
455 /* mouse motion */
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diff changeset
456 if (ctx->input.mouse.grabbed) {
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diff changeset
457 int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y;
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458 nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel);
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diff changeset
459 } else nk_input_motion(ctx, evt->motion.x, evt->motion.y);
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diff changeset
460 return 1;
c5c022c7aa54 Initial work on Nuklear-based UI
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461 } else if (evt->type == SDL_TEXTINPUT) {
c5c022c7aa54 Initial work on Nuklear-based UI
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diff changeset
462 /* text input */
c5c022c7aa54 Initial work on Nuklear-based UI
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463 nk_glyph glyph;
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464 memcpy(glyph, evt->text.text, NK_UTF_SIZE);
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465 nk_input_glyph(ctx, glyph);
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466 return 1;
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467 } else if (evt->type == SDL_MOUSEWHEEL) {
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diff changeset
468 /* mouse wheel */
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
469 nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y));
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diff changeset
470 return 1;
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diff changeset
471 }
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
472 return 0;
c5c022c7aa54 Initial work on Nuklear-based UI
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diff changeset
473 }
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
474
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parents:
diff changeset
475 NK_API
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parents:
diff changeset
476 void nk_sdl_shutdown(void)
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parents:
diff changeset
477 {
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diff changeset
478 nk_font_atlas_clear(&sdl.atlas);
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diff changeset
479 nk_free(&sdl.ctx);
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parents: 1658
diff changeset
480 #ifndef DISABLE_OPENGL
1474
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diff changeset
481 nk_sdl_device_destroy();
1825
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diff changeset
482 #endif
1474
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diff changeset
483 memset(&sdl, 0, sizeof(sdl));
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parents:
diff changeset
484 }
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
485
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diff changeset
486 #endif