nuklear_glfw_gl3.h (18855B)
1 /* 2 * Nuklear - 1.32.0 - public domain 3 * no warrenty implied; use at your own risk. 4 * authored from 2015-2016 by Micha Mettke 5 */ 6 /* 7 * ============================================================== 8 * 9 * API 10 * 11 * =============================================================== 12 */ 13 #ifndef NK_GLFW_GL3_H_ 14 #define NK_GLFW_GL3_H_ 15 16 #include "glfw/glfw3.h" 17 18 enum nk_glfw_init_state{ 19 NK_GLFW3_DEFAULT=0, 20 NK_GLFW3_INSTALL_CALLBACKS 21 }; 22 23 #ifndef NK_GLFW_TEXT_MAX 24 #define NK_GLFW_TEXT_MAX 256 25 #endif 26 27 struct nk_glfw_device { 28 struct nk_buffer cmds; 29 struct nk_draw_null_texture null; 30 GLuint vbo, vao, ebo; 31 GLuint prog; 32 GLuint vert_shdr; 33 GLuint frag_shdr; 34 GLint attrib_pos; 35 GLint attrib_uv; 36 GLint attrib_col; 37 GLint uniform_tex; 38 GLint uniform_proj; 39 GLuint font_tex; 40 }; 41 42 struct nk_glfw { 43 GLFWwindow *win; 44 int width, height; 45 int display_width, display_height; 46 struct nk_glfw_device ogl; 47 struct nk_context ctx; 48 struct nk_font_atlas atlas; 49 struct nk_vec2 fb_scale; 50 unsigned int text[NK_GLFW_TEXT_MAX]; 51 int text_len; 52 struct nk_vec2 scroll; 53 double last_button_click; 54 int is_double_click_down; 55 struct nk_vec2 double_click_pos; 56 }; 57 58 NK_API struct nk_context* nk_glfw3_init(struct nk_glfw* glfw, GLFWwindow *win, enum nk_glfw_init_state); 59 NK_API void nk_glfw3_shutdown(struct nk_glfw* glfw); 60 NK_API void nk_glfw3_font_stash_begin(struct nk_glfw* glfw, struct nk_font_atlas **atlas); 61 NK_API void nk_glfw3_font_stash_end(struct nk_glfw* glfw); 62 NK_API void nk_glfw3_new_frame(struct nk_glfw* glfw); 63 NK_API void nk_glfw3_render(struct nk_glfw* glfw, enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); 64 65 NK_API void nk_glfw3_device_destroy(struct nk_glfw* glfw); 66 NK_API void nk_glfw3_device_create(struct nk_glfw* glfw); 67 68 NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint); 69 NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff); 70 NK_API void nk_glfw3_mouse_button_callback(GLFWwindow *win, int button, int action, int mods); 71 72 #endif 73 /* 74 * ============================================================== 75 * 76 * IMPLEMENTATION 77 * 78 * =============================================================== 79 */ 80 #ifdef NK_GLFW_GL3_IMPLEMENTATION 81 82 #ifndef NK_GLFW_DOUBLE_CLICK_LO 83 #define NK_GLFW_DOUBLE_CLICK_LO 0.02 84 #endif 85 #ifndef NK_GLFW_DOUBLE_CLICK_HI 86 #define NK_GLFW_DOUBLE_CLICK_HI 0.2 87 #endif 88 89 struct nk_glfw_vertex { 90 float position[2]; 91 float uv[2]; 92 nk_byte col[4]; 93 }; 94 95 #ifdef __APPLE__ 96 #define NK_SHADER_VERSION "#version 150\n" 97 #else 98 #define NK_SHADER_VERSION "#version 300 es\n" 99 #endif 100 101 NK_API void 102 nk_glfw3_device_create(struct nk_glfw* glfw) 103 { 104 GLint status; 105 static const GLchar *vertex_shader = 106 NK_SHADER_VERSION 107 "uniform mat4 ProjMtx;\n" 108 "in vec2 Position;\n" 109 "in vec2 TexCoord;\n" 110 "in vec4 Color;\n" 111 "out vec2 Frag_UV;\n" 112 "out vec4 Frag_Color;\n" 113 "void main() {\n" 114 " Frag_UV = TexCoord;\n" 115 " Frag_Color = Color;\n" 116 " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" 117 "}\n"; 118 static const GLchar *fragment_shader = 119 NK_SHADER_VERSION 120 "precision mediump float;\n" 121 "uniform sampler2D Texture;\n" 122 "in vec2 Frag_UV;\n" 123 "in vec4 Frag_Color;\n" 124 "out vec4 Out_Color;\n" 125 "void main(){\n" 126 " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" 127 "}\n"; 128 129 struct nk_glfw_device *dev = &glfw->ogl; 130 nk_buffer_init_default(&dev->cmds); 131 dev->prog = glCreateProgram(); 132 dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); 133 dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); 134 glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); 135 glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); 136 glCompileShader(dev->vert_shdr); 137 glCompileShader(dev->frag_shdr); 138 glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); 139 assert(status == GL_TRUE); 140 glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); 141 assert(status == GL_TRUE); 142 glAttachShader(dev->prog, dev->vert_shdr); 143 glAttachShader(dev->prog, dev->frag_shdr); 144 glLinkProgram(dev->prog); 145 glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); 146 assert(status == GL_TRUE); 147 148 dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); 149 dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); 150 dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); 151 dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); 152 dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); 153 154 { 155 /* buffer setup */ 156 GLsizei vs = sizeof(struct nk_glfw_vertex); 157 size_t vp = offsetof(struct nk_glfw_vertex, position); 158 size_t vt = offsetof(struct nk_glfw_vertex, uv); 159 size_t vc = offsetof(struct nk_glfw_vertex, col); 160 161 glGenBuffers(1, &dev->vbo); 162 glGenBuffers(1, &dev->ebo); 163 glGenVertexArrays(1, &dev->vao); 164 165 glBindVertexArray(dev->vao); 166 glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); 167 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); 168 169 glEnableVertexAttribArray((GLuint)dev->attrib_pos); 170 glEnableVertexAttribArray((GLuint)dev->attrib_uv); 171 glEnableVertexAttribArray((GLuint)dev->attrib_col); 172 173 glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); 174 glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); 175 glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); 176 } 177 178 glBindTexture(GL_TEXTURE_2D, 0); 179 glBindBuffer(GL_ARRAY_BUFFER, 0); 180 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 181 glBindVertexArray(0); 182 } 183 184 NK_INTERN void 185 nk_glfw3_device_upload_atlas(struct nk_glfw* glfw, const void *image, int width, int height) 186 { 187 struct nk_glfw_device *dev = &glfw->ogl; 188 glGenTextures(1, &dev->font_tex); 189 glBindTexture(GL_TEXTURE_2D, dev->font_tex); 190 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 191 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 192 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, 193 GL_RGBA, GL_UNSIGNED_BYTE, image); 194 } 195 196 NK_API void 197 nk_glfw3_device_destroy(struct nk_glfw* glfw) 198 { 199 struct nk_glfw_device *dev = &glfw->ogl; 200 glDetachShader(dev->prog, dev->vert_shdr); 201 glDetachShader(dev->prog, dev->frag_shdr); 202 glDeleteShader(dev->vert_shdr); 203 glDeleteShader(dev->frag_shdr); 204 glDeleteProgram(dev->prog); 205 glDeleteTextures(1, &dev->font_tex); 206 glDeleteBuffers(1, &dev->vbo); 207 glDeleteBuffers(1, &dev->ebo); 208 nk_buffer_free(&dev->cmds); 209 } 210 211 NK_API void 212 nk_glfw3_render(struct nk_glfw* glfw, enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) 213 { 214 struct nk_glfw_device *dev = &glfw->ogl; 215 struct nk_buffer vbuf, ebuf; 216 GLfloat ortho[4][4] = { 217 {2.0f, 0.0f, 0.0f, 0.0f}, 218 {0.0f,-2.0f, 0.0f, 0.0f}, 219 {0.0f, 0.0f,-1.0f, 0.0f}, 220 {-1.0f,1.0f, 0.0f, 1.0f}, 221 }; 222 ortho[0][0] /= (GLfloat)glfw->width; 223 ortho[1][1] /= (GLfloat)glfw->height; 224 225 /* setup global state */ 226 glEnable(GL_BLEND); 227 glBlendEquation(GL_FUNC_ADD); 228 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 229 glDisable(GL_CULL_FACE); 230 glDisable(GL_DEPTH_TEST); 231 glEnable(GL_SCISSOR_TEST); 232 glActiveTexture(GL_TEXTURE0); 233 234 /* setup program */ 235 glUseProgram(dev->prog); 236 glUniform1i(dev->uniform_tex, 0); 237 glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); 238 glViewport(0,0,(GLsizei)glfw->display_width,(GLsizei)glfw->display_height); 239 { 240 /* convert from command queue into draw list and draw to screen */ 241 const struct nk_draw_command *cmd; 242 void *vertices, *elements; 243 const nk_draw_index *offset = NULL; 244 245 /* allocate vertex and element buffer */ 246 glBindVertexArray(dev->vao); 247 glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); 248 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); 249 250 glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); 251 glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); 252 253 /* load draw vertices & elements directly into vertex + element buffer */ 254 vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); 255 elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); 256 { 257 /* fill convert configuration */ 258 struct nk_convert_config config; 259 static const struct nk_draw_vertex_layout_element vertex_layout[] = { 260 {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, 261 {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, 262 {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, 263 {NK_VERTEX_LAYOUT_END} 264 }; 265 memset(&config, 0, sizeof(config)); 266 config.vertex_layout = vertex_layout; 267 config.vertex_size = sizeof(struct nk_glfw_vertex); 268 config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); 269 config.null = dev->null; 270 config.circle_segment_count = 22; 271 config.curve_segment_count = 22; 272 config.arc_segment_count = 22; 273 config.global_alpha = 1.0f; 274 config.shape_AA = AA; 275 config.line_AA = AA; 276 277 /* setup buffers to load vertices and elements */ 278 nk_buffer_init_fixed(&vbuf, vertices, (size_t)max_vertex_buffer); 279 nk_buffer_init_fixed(&ebuf, elements, (size_t)max_element_buffer); 280 nk_convert(&glfw->ctx, &dev->cmds, &vbuf, &ebuf, &config); 281 } 282 glUnmapBuffer(GL_ARRAY_BUFFER); 283 glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); 284 285 /* iterate over and execute each draw command */ 286 nk_draw_foreach(cmd, &glfw->ctx, &dev->cmds) 287 { 288 if (!cmd->elem_count) continue; 289 glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); 290 glScissor( 291 (GLint)(cmd->clip_rect.x * glfw->fb_scale.x), 292 (GLint)((glfw->height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw->fb_scale.y), 293 (GLint)(cmd->clip_rect.w * glfw->fb_scale.x), 294 (GLint)(cmd->clip_rect.h * glfw->fb_scale.y)); 295 glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); 296 offset += cmd->elem_count; 297 } 298 nk_clear(&glfw->ctx); 299 nk_buffer_clear(&dev->cmds); 300 } 301 302 /* default OpenGL state */ 303 glUseProgram(0); 304 glBindBuffer(GL_ARRAY_BUFFER, 0); 305 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 306 glBindVertexArray(0); 307 glDisable(GL_BLEND); 308 glDisable(GL_SCISSOR_TEST); 309 } 310 311 NK_API void 312 nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint) 313 { 314 struct nk_glfw* glfw = glfwGetWindowUserPointer(win); 315 if (glfw->text_len < NK_GLFW_TEXT_MAX) 316 glfw->text[glfw->text_len++] = codepoint; 317 } 318 319 NK_API void 320 nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff) 321 { 322 struct nk_glfw* glfw = glfwGetWindowUserPointer(win); 323 (void)xoff; 324 glfw->scroll.x += (float)xoff; 325 glfw->scroll.y += (float)yoff; 326 } 327 328 NK_API void 329 nk_glfw3_mouse_button_callback(GLFWwindow* win, int button, int action, int mods) 330 { 331 double x, y; 332 if (button != GLFW_MOUSE_BUTTON_LEFT) return; 333 struct nk_glfw* glfw = glfwGetWindowUserPointer(win); 334 glfwGetCursorPos(win, &x, &y); 335 if (action == GLFW_PRESS) { 336 double dt = glfwGetTime() - glfw->last_button_click; 337 if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) { 338 glfw->is_double_click_down = nk_true; 339 glfw->double_click_pos = nk_vec2((float)x, (float)y); 340 } 341 glfw->last_button_click = glfwGetTime(); 342 } else glfw->is_double_click_down = nk_false; 343 } 344 345 NK_INTERN void 346 nk_glfw3_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) 347 { 348 struct nk_glfw* glfw = usr.ptr; 349 const char *text = glfwGetClipboardString(glfw->win); 350 if (text) nk_textedit_paste(edit, text, nk_strlen(text)); 351 (void)usr; 352 } 353 354 NK_INTERN void 355 nk_glfw3_clipboard_copy(nk_handle usr, const char *text, int len) 356 { 357 char *str = 0; 358 if (!len) return; 359 str = (char*)malloc((size_t)len+1); 360 if (!str) return; 361 memcpy(str, text, (size_t)len); 362 str[len] = '\0'; 363 struct nk_glfw* glfw = usr.ptr; 364 glfwSetClipboardString(glfw->win, str); 365 free(str); 366 } 367 368 NK_API struct nk_context* 369 nk_glfw3_init(struct nk_glfw* glfw, GLFWwindow *win, enum nk_glfw_init_state init_state) 370 { 371 glfwSetWindowUserPointer(win, glfw); 372 glfw->win = win; 373 if (init_state == NK_GLFW3_INSTALL_CALLBACKS) { 374 glfwSetScrollCallback(win, nk_gflw3_scroll_callback); 375 glfwSetCharCallback(win, nk_glfw3_char_callback); 376 glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback); 377 } 378 nk_init_default(&glfw->ctx, 0); 379 glfw->ctx.clip.copy = nk_glfw3_clipboard_copy; 380 glfw->ctx.clip.paste = nk_glfw3_clipboard_paste; 381 glfw->ctx.clip.userdata = nk_handle_ptr(&glfw); 382 glfw->last_button_click = 0; 383 nk_glfw3_device_create(glfw); 384 385 glfw->is_double_click_down = nk_false; 386 glfw->double_click_pos = nk_vec2(0, 0); 387 388 return &glfw->ctx; 389 } 390 391 NK_API void 392 nk_glfw3_font_stash_begin(struct nk_glfw* glfw, struct nk_font_atlas **atlas) 393 { 394 nk_font_atlas_init_default(&glfw->atlas); 395 nk_font_atlas_begin(&glfw->atlas); 396 *atlas = &glfw->atlas; 397 } 398 399 NK_API void 400 nk_glfw3_font_stash_end(struct nk_glfw* glfw) 401 { 402 const void *image; int w, h; 403 image = nk_font_atlas_bake(&glfw->atlas, &w, &h, NK_FONT_ATLAS_RGBA32); 404 nk_glfw3_device_upload_atlas(glfw, image, w, h); 405 nk_font_atlas_end(&glfw->atlas, nk_handle_id((int)glfw->ogl.font_tex), &glfw->ogl.null); 406 if (glfw->atlas.default_font) 407 nk_style_set_font(&glfw->ctx, &glfw->atlas.default_font->handle); 408 } 409 410 NK_API void 411 nk_glfw3_new_frame(struct nk_glfw* glfw) 412 { 413 int i; 414 double x, y; 415 struct nk_context *ctx = &glfw->ctx; 416 struct GLFWwindow *win = glfw->win; 417 418 glfwGetWindowSize(win, &glfw->width, &glfw->height); 419 glfwGetFramebufferSize(win, &glfw->display_width, &glfw->display_height); 420 glfw->fb_scale.x = (float)glfw->display_width/(float)glfw->width; 421 glfw->fb_scale.y = (float)glfw->display_height/(float)glfw->height; 422 423 nk_input_begin(ctx); 424 for (i = 0; i < glfw->text_len; ++i) 425 nk_input_unicode(ctx, glfw->text[i]); 426 427 #ifdef NK_GLFW_GL3_MOUSE_GRABBING 428 /* optional grabbing behavior */ 429 if (ctx->input.mouse.grab) 430 glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); 431 else if (ctx->input.mouse.ungrab) 432 glfwSetInputMode(glfw->win, GLFW_CURSOR, GLFW_CURSOR_NORMAL); 433 #endif 434 435 nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); 436 nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); 437 nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); 438 nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); 439 nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); 440 nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); 441 nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); 442 nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); 443 nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); 444 nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); 445 nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS); 446 nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS); 447 nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS|| 448 glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS); 449 450 if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || 451 glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { 452 nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); 453 nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS); 454 nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); 455 nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS); 456 nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS); 457 nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); 458 nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); 459 nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS); 460 nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); 461 } else { 462 nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); 463 nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); 464 nk_input_key(ctx, NK_KEY_COPY, 0); 465 nk_input_key(ctx, NK_KEY_PASTE, 0); 466 nk_input_key(ctx, NK_KEY_CUT, 0); 467 nk_input_key(ctx, NK_KEY_SHIFT, 0); 468 } 469 470 glfwGetCursorPos(win, &x, &y); 471 nk_input_motion(ctx, (int)x, (int)y); 472 #ifdef NK_GLFW_GL3_MOUSE_GRABBING 473 if (ctx->input.mouse.grabbed) { 474 glfwSetCursorPos(glfw->win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y); 475 ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; 476 ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; 477 } 478 #endif 479 nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); 480 nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); 481 nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); 482 nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw->double_click_pos.x, (int)glfw->double_click_pos.y, glfw->is_double_click_down); 483 nk_input_scroll(ctx, glfw->scroll); 484 nk_input_end(&glfw->ctx); 485 glfw->text_len = 0; 486 glfw->scroll = nk_vec2(0,0); 487 } 488 489 NK_API 490 void nk_glfw3_shutdown(struct nk_glfw* glfw) 491 { 492 nk_font_atlas_clear(&glfw->atlas); 493 nk_free(&glfw->ctx); 494 nk_glfw3_device_destroy(glfw); 495 memset(glfw, 0, sizeof(*glfw)); 496 } 497 498 #endif