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