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
nk_glfw3_device_create(struct nk_glfw * glfw)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
nk_glfw3_device_upload_atlas(struct nk_glfw * glfw,const void * image,int width,int height)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
nk_glfw3_device_destroy(struct nk_glfw * glfw)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
nk_glfw3_render(struct nk_glfw * glfw,enum nk_anti_aliasing AA,int max_vertex_buffer,int max_element_buffer)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
nk_glfw3_char_callback(GLFWwindow * win,unsigned int codepoint)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
nk_gflw3_scroll_callback(GLFWwindow * win,double xoff,double yoff)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
nk_glfw3_mouse_button_callback(GLFWwindow * win,int button,int action,int mods)329 nk_glfw3_mouse_button_callback(GLFWwindow* win, int button, int action, int mods)
330 {
331 struct nk_glfw* glfw = glfwGetWindowUserPointer(win);
332 double x, y;
333 NK_UNUSED(mods);
334 if (button != GLFW_MOUSE_BUTTON_LEFT) return;
335 glfwGetCursorPos(win, &x, &y);
336 if (action == GLFW_PRESS) {
337 double dt = glfwGetTime() - glfw->last_button_click;
338 if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) {
339 glfw->is_double_click_down = nk_true;
340 glfw->double_click_pos = nk_vec2((float)x, (float)y);
341 }
342 glfw->last_button_click = glfwGetTime();
343 } else glfw->is_double_click_down = nk_false;
344 }
345
346 NK_INTERN void
nk_glfw3_clipboard_paste(nk_handle usr,struct nk_text_edit * edit)347 nk_glfw3_clipboard_paste(nk_handle usr, struct nk_text_edit *edit)
348 {
349 struct nk_glfw* glfw = usr.ptr;
350 const char *text = glfwGetClipboardString(glfw->win);
351 if (text) nk_textedit_paste(edit, text, nk_strlen(text));
352 (void)usr;
353 }
354
355 NK_INTERN void
nk_glfw3_clipboard_copy(nk_handle usr,const char * text,int len)356 nk_glfw3_clipboard_copy(nk_handle usr, const char *text, int len)
357 {
358 struct nk_glfw* glfw = usr.ptr;
359 char *str = 0;
360 if (!len) return;
361 str = (char*)malloc((size_t)len+1);
362 if (!str) return;
363 memcpy(str, text, (size_t)len);
364 str[len] = '\0';
365 glfwSetClipboardString(glfw->win, str);
366 free(str);
367 }
368
369 NK_API struct nk_context*
nk_glfw3_init(struct nk_glfw * glfw,GLFWwindow * win,enum nk_glfw_init_state init_state)370 nk_glfw3_init(struct nk_glfw* glfw, GLFWwindow *win, enum nk_glfw_init_state init_state)
371 {
372 glfwSetWindowUserPointer(win, glfw);
373 glfw->win = win;
374 if (init_state == NK_GLFW3_INSTALL_CALLBACKS) {
375 glfwSetScrollCallback(win, nk_gflw3_scroll_callback);
376 glfwSetCharCallback(win, nk_glfw3_char_callback);
377 glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback);
378 }
379 nk_init_default(&glfw->ctx, 0);
380 glfw->ctx.clip.copy = nk_glfw3_clipboard_copy;
381 glfw->ctx.clip.paste = nk_glfw3_clipboard_paste;
382 glfw->ctx.clip.userdata = nk_handle_ptr(&glfw);
383 glfw->last_button_click = 0;
384 nk_glfw3_device_create(glfw);
385
386 glfw->is_double_click_down = nk_false;
387 glfw->double_click_pos = nk_vec2(0, 0);
388
389 return &glfw->ctx;
390 }
391
392 NK_API void
nk_glfw3_font_stash_begin(struct nk_glfw * glfw,struct nk_font_atlas ** atlas)393 nk_glfw3_font_stash_begin(struct nk_glfw* glfw, struct nk_font_atlas **atlas)
394 {
395 nk_font_atlas_init_default(&glfw->atlas);
396 nk_font_atlas_begin(&glfw->atlas);
397 *atlas = &glfw->atlas;
398 }
399
400 NK_API void
nk_glfw3_font_stash_end(struct nk_glfw * glfw)401 nk_glfw3_font_stash_end(struct nk_glfw* glfw)
402 {
403 const void *image; int w, h;
404 image = nk_font_atlas_bake(&glfw->atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
405 nk_glfw3_device_upload_atlas(glfw, image, w, h);
406 nk_font_atlas_end(&glfw->atlas, nk_handle_id((int)glfw->ogl.font_tex), &glfw->ogl.null);
407 if (glfw->atlas.default_font)
408 nk_style_set_font(&glfw->ctx, &glfw->atlas.default_font->handle);
409 }
410
411 NK_API void
nk_glfw3_new_frame(struct nk_glfw * glfw)412 nk_glfw3_new_frame(struct nk_glfw* glfw)
413 {
414 int i;
415 double x, y;
416 struct nk_context *ctx = &glfw->ctx;
417 struct GLFWwindow *win = glfw->win;
418
419 glfwGetWindowSize(win, &glfw->width, &glfw->height);
420 glfwGetFramebufferSize(win, &glfw->display_width, &glfw->display_height);
421 glfw->fb_scale.x = (float)glfw->display_width/(float)glfw->width;
422 glfw->fb_scale.y = (float)glfw->display_height/(float)glfw->height;
423
424 nk_input_begin(ctx);
425 for (i = 0; i < glfw->text_len; ++i)
426 nk_input_unicode(ctx, glfw->text[i]);
427
428 #ifdef NK_GLFW_GL3_MOUSE_GRABBING
429 /* optional grabbing behavior */
430 if (ctx->input.mouse.grab)
431 glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
432 else if (ctx->input.mouse.ungrab)
433 glfwSetInputMode(glfw->win, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
434 #endif
435
436 nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS);
437 nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS);
438 nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS);
439 nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS);
440 nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS);
441 nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS);
442 nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
443 nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
444 nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
445 nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
446 nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS);
447 nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS);
448 nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS||
449 glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS);
450
451 if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS ||
452 glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) {
453 nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS);
454 nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS);
455 nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS);
456 nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS);
457 nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS);
458 nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
459 nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
460 nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS);
461 nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS);
462 } else {
463 nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
464 nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
465 nk_input_key(ctx, NK_KEY_COPY, 0);
466 nk_input_key(ctx, NK_KEY_PASTE, 0);
467 nk_input_key(ctx, NK_KEY_CUT, 0);
468 nk_input_key(ctx, NK_KEY_SHIFT, 0);
469 }
470
471 glfwGetCursorPos(win, &x, &y);
472 nk_input_motion(ctx, (int)x, (int)y);
473 #ifdef NK_GLFW_GL3_MOUSE_GRABBING
474 if (ctx->input.mouse.grabbed) {
475 glfwSetCursorPos(glfw->win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y);
476 ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
477 ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
478 }
479 #endif
480 nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS);
481 nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS);
482 nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS);
483 nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw->double_click_pos.x, (int)glfw->double_click_pos.y, glfw->is_double_click_down);
484 nk_input_scroll(ctx, glfw->scroll);
485 nk_input_end(&glfw->ctx);
486 glfw->text_len = 0;
487 glfw->scroll = nk_vec2(0,0);
488 }
489
490 NK_API
nk_glfw3_shutdown(struct nk_glfw * glfw)491 void nk_glfw3_shutdown(struct nk_glfw* glfw)
492 {
493 nk_font_atlas_clear(&glfw->atlas);
494 nk_free(&glfw->ctx);
495 nk_glfw3_device_destroy(glfw);
496 memset(glfw, 0, sizeof(*glfw));
497 }
498
499 #endif
500