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annotate nuklear_ui/nuklear_sdl_gles2.h @ 2113:0013362c320c

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Fix handling of ram code flag offset calculation for ranges that are not an even multiple of the code flag page size
author Michael Pavone <pavone@retrodev.com>
date Sun, 13 Feb 2022 22:52:52 -0800
parents 0757da8ee702
children 1838b0b8f4ff
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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diff changeset
146 {
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diff changeset
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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diff changeset
156 glBindTexture(GL_TEXTURE_2D, 0);
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diff changeset
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);
2011
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171 GLenum err = glGetError();
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172 if (err != GL_NO_ERROR) {
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173 printf("glTexImage2D failed with error %d\n", err);
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174 }
1474
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175 }
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176
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177 NK_API void
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178 nk_sdl_device_destroy(void)
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179 {
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180 struct nk_sdl_device *dev = &sdl.ogl;
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181 glDetachShader(dev->prog, dev->vert_shdr);
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182 glDetachShader(dev->prog, dev->frag_shdr);
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183 glDeleteShader(dev->vert_shdr);
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184 glDeleteShader(dev->frag_shdr);
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185 glDeleteProgram(dev->prog);
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186 glDeleteTextures(1, &dev->font_tex);
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187 glDeleteBuffers(1, &dev->vbo);
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188 glDeleteBuffers(1, &dev->ebo);
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189 nk_buffer_free(&dev->cmds);
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190 }
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191
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192 NK_API void
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193 nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
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194 {
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195 struct nk_sdl_device *dev = &sdl.ogl;
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196 int width, height;
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197 int display_width, display_height;
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198 struct nk_vec2 scale;
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199 GLfloat ortho[4][4] = {
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200 {2.0f, 0.0f, 0.0f, 0.0f},
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201 {0.0f,-2.0f, 0.0f, 0.0f},
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202 {0.0f, 0.0f,-1.0f, 0.0f},
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203 {-1.0f,1.0f, 0.0f, 1.0f},
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204 };
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205 SDL_GetWindowSize(sdl.win, &width, &height);
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206 SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height);
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207 ortho[0][0] /= (GLfloat)width;
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diff changeset
208 ortho[1][1] /= (GLfloat)height;
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diff changeset
209
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diff changeset
210 scale.x = (float)display_width/(float)width;
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diff changeset
211 scale.y = (float)display_height/(float)height;
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diff changeset
212
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diff changeset
213 /* setup global state */
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diff changeset
214 glViewport(0,0,display_width,display_height);
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diff changeset
215 glEnable(GL_BLEND);
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216 glBlendEquation(GL_FUNC_ADD);
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diff changeset
217 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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218 glDisable(GL_CULL_FACE);
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diff changeset
219 glDisable(GL_DEPTH_TEST);
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diff changeset
220 glEnable(GL_SCISSOR_TEST);
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diff changeset
221 glActiveTexture(GL_TEXTURE0);
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diff changeset
222
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diff changeset
223 /* setup program */
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diff changeset
224 glUseProgram(dev->prog);
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225 glUniform1i(dev->uniform_tex, 0);
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diff changeset
226 glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]);
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227 {
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diff changeset
228 /* convert from command queue into draw list and draw to screen */
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diff changeset
229 const struct nk_draw_command *cmd;
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diff changeset
230 void *vertices, *elements;
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diff changeset
231 const nk_draw_index *offset = NULL;
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diff changeset
232
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diff changeset
233 /* Bind buffers */
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diff changeset
234 glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
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diff changeset
235 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
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diff changeset
236
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diff changeset
237 {
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diff changeset
238 /* buffer setup */
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diff changeset
239 glEnableVertexAttribArray((GLuint)dev->attrib_pos);
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diff changeset
240 glEnableVertexAttribArray((GLuint)dev->attrib_uv);
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diff changeset
241 glEnableVertexAttribArray((GLuint)dev->attrib_col);
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diff changeset
242
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diff changeset
243 glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vp);
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diff changeset
244 glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vt);
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diff changeset
245 glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, dev->vs, (void*)dev->vc);
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diff changeset
246 }
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diff changeset
247
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diff changeset
248 glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW);
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diff changeset
249 glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW);
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diff changeset
250
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diff changeset
251 /* load vertices/elements directly into vertex/element buffer */
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diff changeset
252 vertices = malloc((size_t)max_vertex_buffer);
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diff changeset
253 elements = malloc((size_t)max_element_buffer);
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diff changeset
254 {
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diff changeset
255 /* fill convert configuration */
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diff changeset
256 struct nk_convert_config config;
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257 static const struct nk_draw_vertex_layout_element vertex_layout[] = {
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258 {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)},
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259 {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)},
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260 {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)},
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261 {NK_VERTEX_LAYOUT_END}
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diff changeset
262 };
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diff changeset
263 NK_MEMSET(&config, 0, sizeof(config));
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diff changeset
264 config.vertex_layout = vertex_layout;
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diff changeset
265 config.vertex_size = sizeof(struct nk_sdl_vertex);
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diff changeset
266 config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex);
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diff changeset
267 config.null = dev->null;
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268 config.circle_segment_count = 22;
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diff changeset
269 config.curve_segment_count = 22;
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diff changeset
270 config.arc_segment_count = 22;
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diff changeset
271 config.global_alpha = 1.0f;
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diff changeset
272 config.shape_AA = AA;
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diff changeset
273 config.line_AA = AA;
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274
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275 /* setup buffers to load vertices and elements */
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276 {struct nk_buffer vbuf, ebuf;
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277 nk_buffer_init_fixed(&vbuf, vertices, (nk_size)max_vertex_buffer);
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278 nk_buffer_init_fixed(&ebuf, elements, (nk_size)max_element_buffer);
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279 nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);}
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280 }
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diff changeset
281 glBufferSubData(GL_ARRAY_BUFFER, 0, (size_t)max_vertex_buffer, vertices);
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diff changeset
282 glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, (size_t)max_element_buffer, elements);
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diff changeset
283 free(vertices);
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diff changeset
284 free(elements);
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285
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diff changeset
286 /* iterate over and execute each draw command */
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287 nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds) {
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288 if (!cmd->elem_count) continue;
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289 glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
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290 glScissor((GLint)(cmd->clip_rect.x * scale.x),
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diff changeset
291 (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
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292 (GLint)(cmd->clip_rect.w * scale.x),
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diff changeset
293 (GLint)(cmd->clip_rect.h * scale.y));
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diff changeset
294 glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
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diff changeset
295 offset += cmd->elem_count;
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diff changeset
296 }
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297 nk_clear(&sdl.ctx);
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298 }
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299
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diff changeset
300 glUseProgram(0);
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diff changeset
301 glBindBuffer(GL_ARRAY_BUFFER, 0);
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diff changeset
302 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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diff changeset
303
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diff changeset
304 glDisable(GL_BLEND);
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305 glDisable(GL_SCISSOR_TEST);
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306 }
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307 #endif
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308
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309 static void
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310 nk_sdl_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
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diff changeset
311 {
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312 const char *text = SDL_GetClipboardText();
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diff changeset
313 if (text) nk_textedit_paste(edit, text, nk_strlen(text));
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314 (void)usr;
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315 }
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diff changeset
316
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diff changeset
317 static void
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diff changeset
318 nk_sdl_clipbard_copy(nk_handle usr, const char *text, int len)
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319 {
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diff changeset
320 char *str = 0;
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diff changeset
321 (void)usr;
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diff changeset
322 if (!len) return;
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diff changeset
323 str = (char*)malloc((size_t)len+1);
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diff changeset
324 if (!str) return;
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diff changeset
325 memcpy(str, text, (size_t)len);
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diff changeset
326 str[len] = '\0';
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diff changeset
327 SDL_SetClipboardText(str);
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diff changeset
328 free(str);
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diff changeset
329 }
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diff changeset
330
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diff changeset
331 NK_API struct nk_context*
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diff changeset
332 nk_sdl_init(SDL_Window *win)
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diff changeset
333 {
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diff changeset
334 sdl.win = win;
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335 nk_init_default(&sdl.ctx, 0);
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diff changeset
336 sdl.ctx.clip.copy = nk_sdl_clipbard_copy;
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337 sdl.ctx.clip.paste = nk_sdl_clipbard_paste;
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338 sdl.ctx.clip.userdata = nk_handle_ptr(0);
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339 return &sdl.ctx;
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340 }
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341
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diff changeset
342 #ifndef DISABLE_OPENGL
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343 NK_API void
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344 nk_sdl_font_stash_begin(struct nk_font_atlas **atlas)
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diff changeset
345 {
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346 nk_font_atlas_init_default(&sdl.atlas);
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347 nk_font_atlas_begin(&sdl.atlas);
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diff changeset
348 *atlas = &sdl.atlas;
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349 }
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diff changeset
350
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diff changeset
351 NK_API void
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diff changeset
352 nk_sdl_font_stash_end(void)
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diff changeset
353 {
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diff changeset
354 const void *image; int w, h;
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diff changeset
355 image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
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diff changeset
356 nk_sdl_device_upload_atlas(image, w, h);
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diff changeset
357 nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null);
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diff changeset
358 if (sdl.atlas.default_font)
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diff changeset
359 nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle);
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diff changeset
360
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diff changeset
361 }
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diff changeset
362 #endif
1474
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diff changeset
363
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diff changeset
364 NK_API int
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diff changeset
365 nk_sdl_handle_event(SDL_Event *evt)
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diff changeset
366 {
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diff changeset
367 struct nk_context *ctx = &sdl.ctx;
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diff changeset
368 if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) {
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diff changeset
369 /* key events */
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diff changeset
370 int down = evt->type == SDL_KEYDOWN;
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diff changeset
371 const Uint8* state = SDL_GetKeyboardState(0);
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diff changeset
372 SDL_Keycode sym = evt->key.keysym.sym;
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diff changeset
373 if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT)
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diff changeset
374 nk_input_key(ctx, NK_KEY_SHIFT, down);
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diff changeset
375 else if (sym == SDLK_DELETE)
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diff changeset
376 nk_input_key(ctx, NK_KEY_DEL, down);
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diff changeset
377 else if (sym == SDLK_RETURN)
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diff changeset
378 nk_input_key(ctx, NK_KEY_ENTER, down);
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diff changeset
379 else if (sym == SDLK_TAB)
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diff changeset
380 nk_input_key(ctx, NK_KEY_TAB, down);
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diff changeset
381 else if (sym == SDLK_BACKSPACE)
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diff changeset
382 nk_input_key(ctx, NK_KEY_BACKSPACE, down);
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diff changeset
383 else if (sym == SDLK_HOME) {
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diff changeset
384 nk_input_key(ctx, NK_KEY_TEXT_START, down);
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diff changeset
385 nk_input_key(ctx, NK_KEY_SCROLL_START, down);
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diff changeset
386 } else if (sym == SDLK_END) {
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diff changeset
387 nk_input_key(ctx, NK_KEY_TEXT_END, down);
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diff changeset
388 nk_input_key(ctx, NK_KEY_SCROLL_END, down);
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diff changeset
389 } else if (sym == SDLK_PAGEDOWN) {
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diff changeset
390 nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down);
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diff changeset
391 } else if (sym == SDLK_PAGEUP) {
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diff changeset
392 nk_input_key(ctx, NK_KEY_SCROLL_UP, down);
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diff changeset
393 } else if (sym == SDLK_z)
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diff changeset
394 nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
395 else if (sym == SDLK_r)
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diff changeset
396 nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
397 else if (sym == SDLK_c)
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diff changeset
398 nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
399 else if (sym == SDLK_v)
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diff changeset
400 nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
401 else if (sym == SDLK_x)
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diff changeset
402 nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
403 else if (sym == SDLK_b)
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parents:
diff changeset
404 nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
405 else if (sym == SDLK_e)
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parents:
diff changeset
406 nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]);
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parents:
diff changeset
407 else if (sym == SDLK_UP)
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parents:
diff changeset
408 nk_input_key(ctx, NK_KEY_UP, down);
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409 else if (sym == SDLK_DOWN)
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410 nk_input_key(ctx, NK_KEY_DOWN, down);
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411 else if (sym == SDLK_LEFT) {
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412 if (state[SDL_SCANCODE_LCTRL])
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413 nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
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414 else nk_input_key(ctx, NK_KEY_LEFT, down);
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415 } else if (sym == SDLK_RIGHT) {
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416 if (state[SDL_SCANCODE_LCTRL])
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417 nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
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418 else nk_input_key(ctx, NK_KEY_RIGHT, down);
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419 } else return 0;
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420 return 1;
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421 } else if (evt->type == SDL_CONTROLLERBUTTONDOWN || evt->type == SDL_CONTROLLERBUTTONUP) {
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422 int down = evt->type == SDL_CONTROLLERBUTTONDOWN;
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423 if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_DPAD_UP) {
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424 nk_input_key(ctx, NK_KEY_UP, down);
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425 } else if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_DPAD_DOWN) {
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426 nk_input_key(ctx, NK_KEY_DOWN, down);
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427 } else if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_A || evt->cbutton.button == SDL_CONTROLLER_BUTTON_START) {
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428 nk_input_key(ctx, NK_KEY_ENTER, down);
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429 }
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430 } else if (evt->type == SDL_CONTROLLERAXISMOTION) {
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431 if (evt->caxis.axis == SDL_CONTROLLER_AXIS_LEFTY || evt->caxis.axis == SDL_CONTROLLER_AXIS_RIGHTY) {
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432 int down = abs(evt->caxis.value) > 2000;
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433 if (evt->caxis.value >= 0) {
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434 if (ctx->input.keyboard.keys[NK_KEY_UP].down) {
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435 nk_input_key(ctx, NK_KEY_UP, 0);
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436 }
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437 nk_input_key(ctx, NK_KEY_DOWN, down);
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438 } else {
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439 if (ctx->input.keyboard.keys[NK_KEY_DOWN].down) {
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440 nk_input_key(ctx, NK_KEY_DOWN, 0);
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441 }
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442 nk_input_key(ctx, NK_KEY_UP, down);
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443 }
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444 }
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445 } else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) {
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446 /* mouse button */
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447 int down = evt->type == SDL_MOUSEBUTTONDOWN;
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448 const int x = evt->button.x, y = evt->button.y;
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449 if (evt->button.button == SDL_BUTTON_LEFT) {
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450 if (evt->button.clicks > 1)
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451 nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down);
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452 nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
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453 } else if (evt->button.button == SDL_BUTTON_MIDDLE)
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454 nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
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455 else if (evt->button.button == SDL_BUTTON_RIGHT)
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456 nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
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457 return 1;
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458 } else if (evt->type == SDL_MOUSEMOTION) {
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diff changeset
459 /* mouse motion */
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diff changeset
460 if (ctx->input.mouse.grabbed) {
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diff changeset
461 int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y;
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462 nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel);
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diff changeset
463 } else nk_input_motion(ctx, evt->motion.x, evt->motion.y);
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diff changeset
464 return 1;
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465 } else if (evt->type == SDL_TEXTINPUT) {
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diff changeset
466 /* text input */
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467 nk_glyph glyph;
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468 memcpy(glyph, evt->text.text, NK_UTF_SIZE);
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diff changeset
469 nk_input_glyph(ctx, glyph);
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470 return 1;
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471 } else if (evt->type == SDL_MOUSEWHEEL) {
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diff changeset
472 /* mouse wheel */
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diff changeset
473 nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y));
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parents:
diff changeset
474 return 1;
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diff changeset
475 }
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
476 return 0;
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diff changeset
477 }
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
478
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parents:
diff changeset
479 NK_API
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diff changeset
480 void nk_sdl_shutdown(void)
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diff changeset
481 {
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diff changeset
482 nk_font_atlas_clear(&sdl.atlas);
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diff changeset
483 nk_free(&sdl.ctx);
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parents: 1658
diff changeset
484 #ifndef DISABLE_OPENGL
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diff changeset
485 nk_sdl_device_destroy();
1825
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diff changeset
486 #endif
1474
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parents:
diff changeset
487 memset(&sdl, 0, sizeof(sdl));
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parents:
diff changeset
488 }
c5c022c7aa54 Initial work on Nuklear-based UI
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parents:
diff changeset
489
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diff changeset
490 #endif