1 /* nuklear - 1.40.8 - public domain */
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <stdint.h>
5 #include <stdarg.h>
6 #include <string.h>
7 #include <math.h>
8 #include <assert.h>
9 #include <limits.h>
10 #include <time.h>
11
12 #define NK_INCLUDE_FIXED_TYPES
13 #define NK_INCLUDE_STANDARD_IO
14 #define NK_INCLUDE_STANDARD_VARARGS
15 #define NK_INCLUDE_DEFAULT_ALLOCATOR
16 #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
17 #define NK_INCLUDE_FONT_BAKING
18 #define NK_INCLUDE_DEFAULT_FONT
19 #define NK_IMPLEMENTATION
20 #define NK_SDL_GLES2_IMPLEMENTATION
21 #include "../../nuklear.h"
22 #include "nuklear_sdl_gles2.h"
23
24 #define WINDOW_WIDTH 800
25 #define WINDOW_HEIGHT 600
26
27 #define MAX_VERTEX_MEMORY 512 * 1024
28 #define MAX_ELEMENT_MEMORY 128 * 1024
29
30 #define UNUSED(a) (void)a
31 #define MIN(a,b) ((a) < (b) ? (a) : (b))
32 #define MAX(a,b) ((a) < (b) ? (b) : (a))
33 #define LEN(a) (sizeof(a)/sizeof(a)[0])
34
35 /* ===============================================================
36 *
37 * EXAMPLE
38 *
39 * ===============================================================*/
40 /* This are some code examples to provide a small overview of what can be
41 * done with this library. To try out an example uncomment the defines */
42 /*#define INCLUDE_ALL */
43 /*#define INCLUDE_STYLE */
44 /*#define INCLUDE_CALCULATOR */
45 /*#define INCLUDE_CANVAS */
46 /*#define INCLUDE_OVERVIEW */
47 /*#define INCLUDE_NODE_EDITOR */
48
49 #ifdef INCLUDE_ALL
50 #define INCLUDE_STYLE
51 #define INCLUDE_CALCULATOR
52 #define INCLUDE_CANVAS
53 #define INCLUDE_OVERVIEW
54 #define INCLUDE_NODE_EDITOR
55 #endif
56
57 #ifdef INCLUDE_STYLE
58 #include "../style.c"
59 #endif
60 #ifdef INCLUDE_CALCULATOR
61 #include "../calculator.c"
62 #endif
63 #ifdef INCLUDE_CANVAS
64 #include "../canvas.c"
65 #endif
66 #ifdef INCLUDE_OVERVIEW
67 #include "../overview.c"
68 #endif
69 #ifdef INCLUDE_NODE_EDITOR
70 #include "../node_editor.c"
71 #endif
72
73 /* ===============================================================
74 *
75 * DEMO
76 *
77 * ===============================================================*/
78
79
80 /* Platform */
81 SDL_Window *win;
82 int running = nk_true;
83
84 static void
MainLoop(void * loopArg)85 MainLoop(void* loopArg){
86 struct nk_context *ctx = (struct nk_context *)loopArg;
87
88 /* Input */
89 SDL_Event evt;
90 nk_input_begin(ctx);
91 while (SDL_PollEvent(&evt)) {
92 if (evt.type == SDL_QUIT) running = nk_false;
93 nk_sdl_handle_event(&evt);
94 }
95 nk_input_end(ctx);
96
97
98 /* GUI */
99 if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200),
100 NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
101 NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
102 {
103 nk_menubar_begin(ctx);
104 nk_layout_row_begin(ctx, NK_STATIC, 25, 2);
105 nk_layout_row_push(ctx, 45);
106 if (nk_menu_begin_label(ctx, "FILE", NK_TEXT_LEFT, nk_vec2(120, 200))) {
107 nk_layout_row_dynamic(ctx, 30, 1);
108 nk_menu_item_label(ctx, "OPEN", NK_TEXT_LEFT);
109 nk_menu_item_label(ctx, "CLOSE", NK_TEXT_LEFT);
110 nk_menu_end(ctx);
111 }
112 nk_layout_row_push(ctx, 45);
113 if (nk_menu_begin_label(ctx, "EDIT", NK_TEXT_LEFT, nk_vec2(120, 200))) {
114 nk_layout_row_dynamic(ctx, 30, 1);
115 nk_menu_item_label(ctx, "COPY", NK_TEXT_LEFT);
116 nk_menu_item_label(ctx, "CUT", NK_TEXT_LEFT);
117 nk_menu_item_label(ctx, "PASTE", NK_TEXT_LEFT);
118 nk_menu_end(ctx);
119 }
120 nk_layout_row_end(ctx);
121 nk_menubar_end(ctx);
122
123 {
124 enum {EASY, HARD};
125 static int op = EASY;
126 static int property = 20;
127 nk_layout_row_static(ctx, 30, 80, 1);
128 if (nk_button_label(ctx, "button"))
129 fprintf(stdout, "button pressed\n");
130 nk_layout_row_dynamic(ctx, 30, 2);
131 if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
132 if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
133 nk_layout_row_dynamic(ctx, 25, 1);
134 nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
135 }
136 }
137 nk_end(ctx);
138
139 /* -------------- EXAMPLES ---------------- */
140 #ifdef INCLUDE_CALCULATOR
141 calculator(ctx);
142 #endif
143 #ifdef INCLUDE_CANVAS
144 canvas(ctx);
145 #endif
146 #ifdef INCLUDE_OVERVIEW
147 overview(ctx);
148 #endif
149 #ifdef INCLUDE_NODE_EDITOR
150 node_editor(ctx);
151 #endif
152 /* ----------------------------------------- */
153
154 /* Draw */
155 {float bg[4];
156 int win_width, win_height;
157 nk_color_fv(bg, nk_rgb(28,48,62));
158 SDL_GetWindowSize(win, &win_width, &win_height);
159 glViewport(0, 0, win_width, win_height);
160 glClear(GL_COLOR_BUFFER_BIT);
161 glClearColor(bg[0], bg[1], bg[2], bg[3]);
162 /* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state
163 * with blending, scissor, face culling, depth test and viewport and
164 * defaults everything back into a default state.
165 * Make sure to either a.) save and restore or b.) reset your own state after
166 * rendering the UI. */
167 nk_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_MEMORY, MAX_ELEMENT_MEMORY);
168 SDL_GL_SwapWindow(win);}
169 }
170
main(int argc,char * argv[])171 int main(int argc, char* argv[])
172 {
173 /* GUI */
174 struct nk_context *ctx;
175 SDL_GLContext glContext;
176
177 NK_UNUSED(argc);
178 NK_UNUSED(argv);
179
180 /* SDL setup */
181 SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0");
182 /*SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS); // - do NOT init SDL on GL ES 2 */
183 SDL_GL_SetAttribute (SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
184 SDL_GL_SetAttribute (SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
185 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
186 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
187 SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
188 win = SDL_CreateWindow("Demo",
189 SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
190 WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI);
191 glContext = SDL_GL_CreateContext(win);
192
193 /* OpenGL setup */
194 glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
195
196 ctx = nk_sdl_init(win);
197 /* Load Fonts: if none of these are loaded a default font will be used */
198 /* Load Cursor: if you uncomment cursor loading please hide the cursor */
199 {struct nk_font_atlas *atlas;
200 nk_sdl_font_stash_begin(&atlas);
201 /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/
202 /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 16, 0);*/
203 /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
204 /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/
205 /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/
206 /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/
207 nk_sdl_font_stash_end();
208 /*nk_style_load_all_cursors(ctx, atlas->cursors);*/
209 /*nk_style_set_font(ctx, &roboto->handle)*/;}
210
211 /* style.c */
212 /*set_style(ctx, THEME_WHITE);*/
213 /*set_style(ctx, THEME_RED);*/
214 /*set_style(ctx, THEME_BLUE);*/
215 /*set_style(ctx, THEME_DARK);*/
216
217 #if defined(__EMSCRIPTEN__)
218 #include <emscripten.h>
219 emscripten_set_main_loop_arg(MainLoop, (void*)ctx, 0, nk_true);
220 #else
221 while (running) MainLoop((void*)ctx);
222 #endif
223
224 nk_sdl_shutdown();
225 SDL_GL_DeleteContext(glContext);
226 SDL_DestroyWindow(win);
227 SDL_Quit();
228 return 0;
229 }
230
231