911 lines
30 KiB
C
911 lines
30 KiB
C
/* nuklear - v1.05 - public domain */
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdarg.h>
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#include <string.h>
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#include <math.h>
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#include <assert.h>
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#include <time.h>
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#include <limits.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <GL/glew.h>
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#include <GLFW/glfw3.h>
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#define NK_INCLUDE_FIXED_TYPES
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#define NK_INCLUDE_STANDARD_IO
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#define NK_INCLUDE_DEFAULT_ALLOCATOR
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#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
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#define NK_INCLUDE_FONT_BAKING
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#define NK_INCLUDE_DEFAULT_FONT
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#define NK_IMPLEMENTATION
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#include "../nuklear.h"
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#define STB_IMAGE_IMPLEMENTATION
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#include "stb_image.h"
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/* macros */
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#define WINDOW_WIDTH 1200
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#define WINDOW_HEIGHT 800
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#define MAX_VERTEX_MEMORY 512 * 1024
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#define MAX_ELEMENT_MEMORY 128 * 1024
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#define UNUSED(a) (void)a
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MAX(a,b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a)/sizeof(a)[0])
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#ifdef __APPLE__
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#define NK_SHADER_VERSION "#version 150\n"
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#else
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#define NK_SHADER_VERSION "#version 300 es\n"
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#endif
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/* ===============================================================
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*
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* GUI
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*
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* ===============================================================*/
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struct icons {
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struct nk_image desktop;
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struct nk_image home;
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struct nk_image computer;
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struct nk_image directory;
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struct nk_image default_file;
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struct nk_image text_file;
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struct nk_image music_file;
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struct nk_image font_file;
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struct nk_image img_file;
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struct nk_image movie_file;
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};
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enum file_groups {
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FILE_GROUP_DEFAULT,
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FILE_GROUP_TEXT,
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FILE_GROUP_MUSIC,
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FILE_GROUP_FONT,
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FILE_GROUP_IMAGE,
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FILE_GROUP_MOVIE,
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FILE_GROUP_MAX
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};
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enum file_types {
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FILE_DEFAULT,
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FILE_TEXT,
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FILE_C_SOURCE,
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FILE_CPP_SOURCE,
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FILE_HEADER,
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FILE_CPP_HEADER,
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FILE_MP3,
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FILE_WAV,
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FILE_OGG,
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FILE_TTF,
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FILE_BMP,
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FILE_PNG,
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FILE_JPEG,
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FILE_PCX,
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FILE_TGA,
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FILE_GIF,
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FILE_MAX
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};
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struct file_group {
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enum file_groups group;
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const char *name;
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struct nk_image *icon;
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};
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struct file {
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enum file_types type;
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const char *suffix;
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enum file_groups group;
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};
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struct media {
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int font;
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int icon_sheet;
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struct icons icons;
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struct file_group group[FILE_GROUP_MAX];
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struct file files[FILE_MAX];
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};
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#define MAX_PATH_LEN 512
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struct file_browser {
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/* path */
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char file[MAX_PATH_LEN];
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char home[MAX_PATH_LEN];
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char desktop[MAX_PATH_LEN];
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char directory[MAX_PATH_LEN];
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/* directory content */
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char **files;
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char **directories;
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size_t file_count;
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size_t dir_count;
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struct media *media;
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};
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#ifdef __unix__
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#include <dirent.h>
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#include <unistd.h>
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#endif
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#ifndef _WIN32
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# include <pwd.h>
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#endif
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static void
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die(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fputs("\n", stderr);
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exit(EXIT_FAILURE);
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}
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static char*
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file_load(const char* path, size_t* siz)
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{
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char *buf;
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FILE *fd = fopen(path, "rb");
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if (!fd) die("Failed to open file: %s\n", path);
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fseek(fd, 0, SEEK_END);
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*siz = (size_t)ftell(fd);
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fseek(fd, 0, SEEK_SET);
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buf = (char*)calloc(*siz, 1);
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fread(buf, *siz, 1, fd);
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fclose(fd);
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return buf;
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}
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static char*
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str_duplicate(const char *src)
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{
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char *ret;
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size_t len = strlen(src);
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if (!len) return 0;
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ret = (char*)malloc(len+1);
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if (!ret) return 0;
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memcpy(ret, src, len);
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ret[len] = '\0';
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return ret;
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}
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static void
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dir_free_list(char **list, size_t size)
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{
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size_t i;
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for (i = 0; i < size; ++i)
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free(list[i]);
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free(list);
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}
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static char**
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dir_list(const char *dir, int return_subdirs, size_t *count)
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{
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size_t n = 0;
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char buffer[MAX_PATH_LEN];
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char **results = NULL;
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const DIR *none = NULL;
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size_t capacity = 32;
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size_t size;
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DIR *z;
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assert(dir);
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assert(count);
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strncpy(buffer, dir, MAX_PATH_LEN);
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n = strlen(buffer);
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if (n > 0 && (buffer[n-1] != '/'))
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buffer[n++] = '/';
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size = 0;
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z = opendir(dir);
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if (z != none) {
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int nonempty = 1;
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struct dirent *data = readdir(z);
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nonempty = (data != NULL);
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if (!nonempty) return NULL;
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do {
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DIR *y;
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char *p;
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int is_subdir;
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if (data->d_name[0] == '.')
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continue;
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strncpy(buffer + n, data->d_name, MAX_PATH_LEN-n);
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y = opendir(buffer);
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is_subdir = (y != NULL);
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if (y != NULL) closedir(y);
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if ((return_subdirs && is_subdir) || (!is_subdir && !return_subdirs)){
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if (!size) {
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results = (char**)calloc(sizeof(char*), capacity);
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} else if (size >= capacity) {
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void *old = results;
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capacity = capacity * 2;
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results = (char**)realloc(results, capacity * sizeof(char*));
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assert(results);
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if (!results) free(old);
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}
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p = str_duplicate(data->d_name);
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results[size++] = p;
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}
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} while ((data = readdir(z)) != NULL);
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}
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if (z) closedir(z);
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*count = size;
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return results;
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}
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static struct file_group
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FILE_GROUP(enum file_groups group, const char *name, struct nk_image *icon)
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{
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struct file_group fg;
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fg.group = group;
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fg.name = name;
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fg.icon = icon;
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return fg;
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}
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static struct file
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FILE_DEF(enum file_types type, const char *suffix, enum file_groups group)
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{
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struct file fd;
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fd.type = type;
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fd.suffix = suffix;
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fd.group = group;
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return fd;
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}
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static struct nk_image*
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media_icon_for_file(struct media *media, const char *file)
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{
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int i = 0;
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const char *s = file;
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char suffix[4];
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int found = 0;
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memset(suffix, 0, sizeof(suffix));
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/* extract suffix .xxx from file */
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while (*s++ != '\0') {
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if (found && i < 3)
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suffix[i++] = *s;
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if (*s == '.') {
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if (found){
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found = 0;
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break;
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}
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found = 1;
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}
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}
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/* check for all file definition of all groups for fitting suffix*/
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for (i = 0; i < FILE_MAX && found; ++i) {
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struct file *d = &media->files[i];
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{
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const char *f = d->suffix;
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s = suffix;
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while (f && *f && *s && *s == *f) {
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s++; f++;
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}
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/* found correct file definition so */
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if (f && *s == '\0' && *f == '\0')
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return media->group[d->group].icon;
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}
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}
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return &media->icons.default_file;
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}
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static void
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media_init(struct media *media)
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{
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/* file groups */
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struct icons *icons = &media->icons;
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media->group[FILE_GROUP_DEFAULT] = FILE_GROUP(FILE_GROUP_DEFAULT,"default",&icons->default_file);
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media->group[FILE_GROUP_TEXT] = FILE_GROUP(FILE_GROUP_TEXT, "textual", &icons->text_file);
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media->group[FILE_GROUP_MUSIC] = FILE_GROUP(FILE_GROUP_MUSIC, "music", &icons->music_file);
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media->group[FILE_GROUP_FONT] = FILE_GROUP(FILE_GROUP_FONT, "font", &icons->font_file);
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media->group[FILE_GROUP_IMAGE] = FILE_GROUP(FILE_GROUP_IMAGE, "image", &icons->img_file);
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media->group[FILE_GROUP_MOVIE] = FILE_GROUP(FILE_GROUP_MOVIE, "movie", &icons->movie_file);
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/* files */
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media->files[FILE_DEFAULT] = FILE_DEF(FILE_DEFAULT, NULL, FILE_GROUP_DEFAULT);
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media->files[FILE_TEXT] = FILE_DEF(FILE_TEXT, "txt", FILE_GROUP_TEXT);
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media->files[FILE_C_SOURCE] = FILE_DEF(FILE_C_SOURCE, "c", FILE_GROUP_TEXT);
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media->files[FILE_CPP_SOURCE] = FILE_DEF(FILE_CPP_SOURCE, "cpp", FILE_GROUP_TEXT);
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media->files[FILE_HEADER] = FILE_DEF(FILE_HEADER, "h", FILE_GROUP_TEXT);
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media->files[FILE_CPP_HEADER] = FILE_DEF(FILE_HEADER, "hpp", FILE_GROUP_TEXT);
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media->files[FILE_MP3] = FILE_DEF(FILE_MP3, "mp3", FILE_GROUP_MUSIC);
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media->files[FILE_WAV] = FILE_DEF(FILE_WAV, "wav", FILE_GROUP_MUSIC);
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media->files[FILE_OGG] = FILE_DEF(FILE_OGG, "ogg", FILE_GROUP_MUSIC);
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media->files[FILE_TTF] = FILE_DEF(FILE_TTF, "ttf", FILE_GROUP_FONT);
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media->files[FILE_BMP] = FILE_DEF(FILE_BMP, "bmp", FILE_GROUP_IMAGE);
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media->files[FILE_PNG] = FILE_DEF(FILE_PNG, "png", FILE_GROUP_IMAGE);
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media->files[FILE_JPEG] = FILE_DEF(FILE_JPEG, "jpg", FILE_GROUP_IMAGE);
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media->files[FILE_PCX] = FILE_DEF(FILE_PCX, "pcx", FILE_GROUP_IMAGE);
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media->files[FILE_TGA] = FILE_DEF(FILE_TGA, "tga", FILE_GROUP_IMAGE);
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media->files[FILE_GIF] = FILE_DEF(FILE_GIF, "gif", FILE_GROUP_IMAGE);
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}
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static void
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file_browser_reload_directory_content(struct file_browser *browser, const char *path)
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{
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strncpy(browser->directory, path, MAX_PATH_LEN);
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dir_free_list(browser->files, browser->file_count);
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dir_free_list(browser->directories, browser->dir_count);
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browser->files = dir_list(path, 0, &browser->file_count);
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browser->directories = dir_list(path, 1, &browser->dir_count);
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}
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static void
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file_browser_init(struct file_browser *browser, struct media *media)
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{
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memset(browser, 0, sizeof(*browser));
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browser->media = media;
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{
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/* load files and sub-directory list */
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const char *home = getenv("HOME");
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#ifdef _WIN32
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if (!home) home = getenv("USERPROFILE");
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#else
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if (!home) home = getpwuid(getuid())->pw_dir;
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{
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size_t l;
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strncpy(browser->home, home, MAX_PATH_LEN);
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l = strlen(browser->home);
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strcpy(browser->home + l, "/");
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strcpy(browser->directory, browser->home);
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}
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#endif
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{
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size_t l;
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strcpy(browser->desktop, browser->home);
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l = strlen(browser->desktop);
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strcpy(browser->desktop + l, "desktop/");
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}
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browser->files = dir_list(browser->directory, 0, &browser->file_count);
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browser->directories = dir_list(browser->directory, 1, &browser->dir_count);
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}
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}
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static void
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file_browser_free(struct file_browser *browser)
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{
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if (browser->files)
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dir_free_list(browser->files, browser->file_count);
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if (browser->directories)
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dir_free_list(browser->directories, browser->dir_count);
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browser->files = NULL;
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browser->directories = NULL;
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memset(browser, 0, sizeof(*browser));
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}
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static int
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file_browser_run(struct file_browser *browser, struct nk_context *ctx)
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{
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int ret = 0;
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struct media *media = browser->media;
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struct nk_rect total_space;
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if (nk_begin(ctx, "File Browser", nk_rect(50, 50, 800, 600),
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NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_MOVABLE))
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{
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static float ratio[] = {0.25f, NK_UNDEFINED};
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float spacing_x = ctx->style.window.spacing.x;
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/* output path directory selector in the menubar */
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ctx->style.window.spacing.x = 0;
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nk_menubar_begin(ctx);
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{
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char *d = browser->directory;
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char *begin = d + 1;
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nk_layout_row_dynamic(ctx, 25, 6);
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while (*d++) {
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if (*d == '/') {
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*d = '\0';
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if (nk_button_label(ctx, begin)) {
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*d++ = '/'; *d = '\0';
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file_browser_reload_directory_content(browser, browser->directory);
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break;
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}
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*d = '/';
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begin = d + 1;
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}
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}
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}
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nk_menubar_end(ctx);
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ctx->style.window.spacing.x = spacing_x;
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/* window layout */
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total_space = nk_window_get_content_region(ctx);
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nk_layout_row(ctx, NK_DYNAMIC, total_space.h, 2, ratio);
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nk_group_begin(ctx, "Special", NK_WINDOW_NO_SCROLLBAR);
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{
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struct nk_image home = media->icons.home;
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struct nk_image desktop = media->icons.desktop;
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struct nk_image computer = media->icons.computer;
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nk_layout_row_dynamic(ctx, 40, 1);
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if (nk_button_image_label(ctx, home, "home", NK_TEXT_CENTERED))
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file_browser_reload_directory_content(browser, browser->home);
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if (nk_button_image_label(ctx,desktop,"desktop",NK_TEXT_CENTERED))
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file_browser_reload_directory_content(browser, browser->desktop);
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if (nk_button_image_label(ctx,computer,"computer",NK_TEXT_CENTERED))
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file_browser_reload_directory_content(browser, "/");
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nk_group_end(ctx);
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}
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/* output directory content window */
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nk_group_begin(ctx, "Content", 0);
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{
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int index = -1;
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size_t i = 0, j = 0, k = 0;
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size_t rows = 0, cols = 0;
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size_t count = browser->dir_count + browser->file_count;
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cols = 4;
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rows = count / cols;
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for (i = 0; i <= rows; i += 1) {
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{size_t n = j + cols;
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nk_layout_row_dynamic(ctx, 135, (int)cols);
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for (; j < count && j < n; ++j) {
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/* draw one row of icons */
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if (j < browser->dir_count) {
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/* draw and execute directory buttons */
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if (nk_button_image(ctx,media->icons.directory))
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index = (int)j;
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} else {
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/* draw and execute files buttons */
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struct nk_image *icon;
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size_t fileIndex = ((size_t)j - browser->dir_count);
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icon = media_icon_for_file(media,browser->files[fileIndex]);
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if (nk_button_image(ctx, *icon)) {
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strncpy(browser->file, browser->directory, MAX_PATH_LEN);
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n = strlen(browser->file);
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strncpy(browser->file + n, browser->files[fileIndex], MAX_PATH_LEN - n);
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ret = 1;
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}
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}
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}}
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{size_t n = k + cols;
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nk_layout_row_dynamic(ctx, 20, (int)cols);
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for (; k < count && k < n; k++) {
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/* draw one row of labels */
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if (k < browser->dir_count) {
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nk_label(ctx, browser->directories[k], NK_TEXT_CENTERED);
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} else {
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size_t t = k-browser->dir_count;
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nk_label(ctx,browser->files[t],NK_TEXT_CENTERED);
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}
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}}
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}
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if (index != -1) {
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size_t n = strlen(browser->directory);
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strncpy(browser->directory + n, browser->directories[index], MAX_PATH_LEN - n);
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n = strlen(browser->directory);
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if (n < MAX_PATH_LEN - 1) {
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browser->directory[n] = '/';
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browser->directory[n+1] = '\0';
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}
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file_browser_reload_directory_content(browser, browser->directory);
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}
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nk_group_end(ctx);
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}
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}
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nk_end(ctx);
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return ret;
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}
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/* ===============================================================
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*
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* DEVICE
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*
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* ===============================================================*/
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struct nk_glfw_vertex {
|
|
float position[2];
|
|
float uv[2];
|
|
nk_byte col[4];
|
|
};
|
|
|
|
struct device {
|
|
struct nk_buffer cmds;
|
|
struct nk_draw_null_texture null;
|
|
GLuint vbo, vao, ebo;
|
|
GLuint prog;
|
|
GLuint vert_shdr;
|
|
GLuint frag_shdr;
|
|
GLint attrib_pos;
|
|
GLint attrib_uv;
|
|
GLint attrib_col;
|
|
GLint uniform_tex;
|
|
GLint uniform_proj;
|
|
GLuint font_tex;
|
|
};
|
|
static struct nk_image
|
|
icon_load(const char *filename)
|
|
{
|
|
int x,y,n;
|
|
GLuint tex;
|
|
unsigned char *data = stbi_load(filename, &x, &y, &n, 0);
|
|
if (!data) die("[SDL]: failed to load image: %s", filename);
|
|
|
|
glGenTextures(1, &tex);
|
|
glBindTexture(GL_TEXTURE_2D, tex);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
|
|
glGenerateMipmap(GL_TEXTURE_2D);
|
|
stbi_image_free(data);
|
|
return nk_image_id((int)tex);
|
|
}
|
|
|
|
static void
|
|
device_init(struct device *dev)
|
|
{
|
|
GLint status;
|
|
static const GLchar *vertex_shader =
|
|
NK_SHADER_VERSION
|
|
"uniform mat4 ProjMtx;\n"
|
|
"in vec2 Position;\n"
|
|
"in vec2 TexCoord;\n"
|
|
"in vec4 Color;\n"
|
|
"out vec2 Frag_UV;\n"
|
|
"out vec4 Frag_Color;\n"
|
|
"void main() {\n"
|
|
" Frag_UV = TexCoord;\n"
|
|
" Frag_Color = Color;\n"
|
|
" gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n"
|
|
"}\n";
|
|
static const GLchar *fragment_shader =
|
|
NK_SHADER_VERSION
|
|
"precision mediump float;\n"
|
|
"uniform sampler2D Texture;\n"
|
|
"in vec2 Frag_UV;\n"
|
|
"in vec4 Frag_Color;\n"
|
|
"out vec4 Out_Color;\n"
|
|
"void main(){\n"
|
|
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
|
"}\n";
|
|
|
|
nk_buffer_init_default(&dev->cmds);
|
|
dev->prog = glCreateProgram();
|
|
dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER);
|
|
dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER);
|
|
glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0);
|
|
glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0);
|
|
glCompileShader(dev->vert_shdr);
|
|
glCompileShader(dev->frag_shdr);
|
|
glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status);
|
|
assert(status == GL_TRUE);
|
|
glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status);
|
|
assert(status == GL_TRUE);
|
|
glAttachShader(dev->prog, dev->vert_shdr);
|
|
glAttachShader(dev->prog, dev->frag_shdr);
|
|
glLinkProgram(dev->prog);
|
|
glGetProgramiv(dev->prog, GL_LINK_STATUS, &status);
|
|
assert(status == GL_TRUE);
|
|
|
|
dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture");
|
|
dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx");
|
|
dev->attrib_pos = glGetAttribLocation(dev->prog, "Position");
|
|
dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord");
|
|
dev->attrib_col = glGetAttribLocation(dev->prog, "Color");
|
|
|
|
{
|
|
/* buffer setup */
|
|
GLsizei vs = sizeof(struct nk_glfw_vertex);
|
|
size_t vp = offsetof(struct nk_glfw_vertex, position);
|
|
size_t vt = offsetof(struct nk_glfw_vertex, uv);
|
|
size_t vc = offsetof(struct nk_glfw_vertex, col);
|
|
|
|
glGenBuffers(1, &dev->vbo);
|
|
glGenBuffers(1, &dev->ebo);
|
|
glGenVertexArrays(1, &dev->vao);
|
|
|
|
glBindVertexArray(dev->vao);
|
|
glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
|
|
|
|
glEnableVertexAttribArray((GLuint)dev->attrib_pos);
|
|
glEnableVertexAttribArray((GLuint)dev->attrib_uv);
|
|
glEnableVertexAttribArray((GLuint)dev->attrib_col);
|
|
|
|
glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp);
|
|
glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt);
|
|
glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc);
|
|
}
|
|
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
|
glBindVertexArray(0);
|
|
}
|
|
|
|
static void
|
|
device_upload_atlas(struct device *dev, const void *image, int width, int height)
|
|
{
|
|
glGenTextures(1, &dev->font_tex);
|
|
glBindTexture(GL_TEXTURE_2D, dev->font_tex);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0,
|
|
GL_RGBA, GL_UNSIGNED_BYTE, image);
|
|
}
|
|
|
|
static void
|
|
device_shutdown(struct device *dev)
|
|
{
|
|
glDetachShader(dev->prog, dev->vert_shdr);
|
|
glDetachShader(dev->prog, dev->frag_shdr);
|
|
glDeleteShader(dev->vert_shdr);
|
|
glDeleteShader(dev->frag_shdr);
|
|
glDeleteProgram(dev->prog);
|
|
glDeleteTextures(1, &dev->font_tex);
|
|
glDeleteBuffers(1, &dev->vbo);
|
|
glDeleteBuffers(1, &dev->ebo);
|
|
nk_buffer_free(&dev->cmds);
|
|
}
|
|
|
|
static void
|
|
device_draw(struct device *dev, struct nk_context *ctx, int width, int height,
|
|
struct nk_vec2 scale, enum nk_anti_aliasing AA)
|
|
{
|
|
GLfloat ortho[4][4] = {
|
|
{2.0f, 0.0f, 0.0f, 0.0f},
|
|
{0.0f,-2.0f, 0.0f, 0.0f},
|
|
{0.0f, 0.0f,-1.0f, 0.0f},
|
|
{-1.0f,1.0f, 0.0f, 1.0f},
|
|
};
|
|
ortho[0][0] /= (GLfloat)width;
|
|
ortho[1][1] /= (GLfloat)height;
|
|
|
|
/* setup global state */
|
|
glEnable(GL_BLEND);
|
|
glBlendEquation(GL_FUNC_ADD);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
glDisable(GL_CULL_FACE);
|
|
glDisable(GL_DEPTH_TEST);
|
|
glEnable(GL_SCISSOR_TEST);
|
|
glActiveTexture(GL_TEXTURE0);
|
|
|
|
/* setup program */
|
|
glUseProgram(dev->prog);
|
|
glUniform1i(dev->uniform_tex, 0);
|
|
glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]);
|
|
{
|
|
/* convert from command queue into draw list and draw to screen */
|
|
const struct nk_draw_command *cmd;
|
|
void *vertices, *elements;
|
|
const nk_draw_index *offset = NULL;
|
|
|
|
/* allocate vertex and element buffer */
|
|
glBindVertexArray(dev->vao);
|
|
glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
|
|
|
|
glBufferData(GL_ARRAY_BUFFER, MAX_VERTEX_MEMORY, NULL, GL_STREAM_DRAW);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAX_ELEMENT_MEMORY, NULL, GL_STREAM_DRAW);
|
|
|
|
/* load draw vertices & elements directly into vertex + element buffer */
|
|
vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
|
|
elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
|
|
{
|
|
/* fill convert configuration */
|
|
struct nk_convert_config config;
|
|
static const struct nk_draw_vertex_layout_element vertex_layout[] = {
|
|
{NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)},
|
|
{NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)},
|
|
{NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)},
|
|
{NK_VERTEX_LAYOUT_END}
|
|
};
|
|
NK_MEMSET(&config, 0, sizeof(config));
|
|
config.vertex_layout = vertex_layout;
|
|
config.vertex_size = sizeof(struct nk_glfw_vertex);
|
|
config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex);
|
|
config.null = dev->null;
|
|
config.circle_segment_count = 22;
|
|
config.curve_segment_count = 22;
|
|
config.arc_segment_count = 22;
|
|
config.global_alpha = 1.0f;
|
|
config.shape_AA = AA;
|
|
config.line_AA = AA;
|
|
|
|
/* setup buffers to load vertices and elements */
|
|
{struct nk_buffer vbuf, ebuf;
|
|
nk_buffer_init_fixed(&vbuf, vertices, MAX_VERTEX_MEMORY);
|
|
nk_buffer_init_fixed(&ebuf, elements, MAX_ELEMENT_MEMORY);
|
|
nk_convert(ctx, &dev->cmds, &vbuf, &ebuf, &config);}
|
|
}
|
|
glUnmapBuffer(GL_ARRAY_BUFFER);
|
|
glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
|
|
|
|
/* iterate over and execute each draw command */
|
|
nk_draw_foreach(cmd, ctx, &dev->cmds) {
|
|
if (!cmd->elem_count) continue;
|
|
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
|
|
glScissor(
|
|
(GLint)(cmd->clip_rect.x * scale.x),
|
|
(GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
|
|
(GLint)(cmd->clip_rect.w * scale.x),
|
|
(GLint)(cmd->clip_rect.h * scale.y));
|
|
glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
|
|
offset += cmd->elem_count;
|
|
}
|
|
nk_clear(ctx);
|
|
nk_buffer_clear(&dev->cmds);
|
|
}
|
|
|
|
/* default OpenGL state */
|
|
glUseProgram(0);
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
|
glBindVertexArray(0);
|
|
glDisable(GL_BLEND);
|
|
glDisable(GL_SCISSOR_TEST);
|
|
}
|
|
|
|
|
|
/* glfw callbacks (I don't know if there is a easier way to access text and scroll )*/
|
|
static void error_callback(int e, const char *d){printf("Error %d: %s\n", e, d);}
|
|
static void text_input(GLFWwindow *win, unsigned int codepoint)
|
|
{nk_input_unicode((struct nk_context*)glfwGetWindowUserPointer(win), codepoint);}
|
|
static void scroll_input(GLFWwindow *win, double _, double yoff)
|
|
{UNUSED(_);nk_input_scroll((struct nk_context*)glfwGetWindowUserPointer(win), nk_vec2(0, (float)yoff));}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
/* Platform */
|
|
static GLFWwindow *win;
|
|
int width = 0, height = 0;
|
|
int display_width = 0, display_height = 0;
|
|
|
|
/* GUI */
|
|
struct device device;
|
|
struct nk_context ctx;
|
|
struct nk_font *font;
|
|
struct nk_font_atlas atlas;
|
|
struct file_browser browser;
|
|
struct media media;
|
|
|
|
/* GLFW */
|
|
glfwSetErrorCallback(error_callback);
|
|
if (!glfwInit()) {
|
|
fprintf(stdout, "[GFLW] failed to init!\n");
|
|
exit(1);
|
|
}
|
|
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
|
|
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
|
|
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
|
|
#ifdef __APPLE__
|
|
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
|
|
#endif
|
|
win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL);
|
|
glfwMakeContextCurrent(win);
|
|
glfwSetWindowUserPointer(win, &ctx);
|
|
glfwSetCharCallback(win, text_input);
|
|
glfwSetScrollCallback(win, scroll_input);
|
|
|
|
/* OpenGL */
|
|
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
|
|
glewExperimental = 1;
|
|
if (glewInit() != GLEW_OK) {
|
|
fprintf(stderr, "Failed to setup GLEW\n");
|
|
exit(1);
|
|
}
|
|
|
|
{/* GUI */
|
|
device_init(&device);
|
|
{const void *image; int w, h;
|
|
const char *font_path = (argc > 1) ? argv[1]: 0;
|
|
nk_font_atlas_init_default(&atlas);
|
|
nk_font_atlas_begin(&atlas);
|
|
if (font_path) font = nk_font_atlas_add_from_file(&atlas, font_path, 13.0f, NULL);
|
|
else font = nk_font_atlas_add_default(&atlas, 13.0f, NULL);
|
|
image = nk_font_atlas_bake(&atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
|
|
device_upload_atlas(&device, image, w, h);
|
|
nk_font_atlas_end(&atlas, nk_handle_id((int)device.font_tex), &device.null);}
|
|
nk_init_default(&ctx, &font->handle);}
|
|
|
|
/* icons */
|
|
glEnable(GL_TEXTURE_2D);
|
|
media.icons.home = icon_load("../icon/home.png");
|
|
media.icons.directory = icon_load("../icon/directory.png");
|
|
media.icons.computer = icon_load("../icon/computer.png");
|
|
media.icons.desktop = icon_load("../icon/desktop.png");
|
|
media.icons.default_file = icon_load("../icon/default.png");
|
|
media.icons.text_file = icon_load("../icon/text.png");
|
|
media.icons.music_file = icon_load("../icon/music.png");
|
|
media.icons.font_file = icon_load("../icon/font.png");
|
|
media.icons.img_file = icon_load("../icon/img.png");
|
|
media.icons.movie_file = icon_load("../icon/movie.png");
|
|
media_init(&media);
|
|
|
|
file_browser_init(&browser, &media);
|
|
while (!glfwWindowShouldClose(win))
|
|
{
|
|
/* High DPI displays */
|
|
struct nk_vec2 scale;
|
|
glfwGetWindowSize(win, &width, &height);
|
|
glfwGetFramebufferSize(win, &display_width, &display_height);
|
|
scale.x = (float)display_width/(float)width;
|
|
scale.y = (float)display_height/(float)height;
|
|
|
|
/* Input */
|
|
{double x, y;
|
|
nk_input_begin(&ctx);
|
|
glfwPollEvents();
|
|
nk_input_key(&ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS);
|
|
if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS ||
|
|
glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) {
|
|
nk_input_key(&ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_P) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS);
|
|
nk_input_key(&ctx, NK_KEY_SHIFT, 1);
|
|
} else {
|
|
nk_input_key(&ctx, NK_KEY_COPY, 0);
|
|
nk_input_key(&ctx, NK_KEY_PASTE, 0);
|
|
nk_input_key(&ctx, NK_KEY_CUT, 0);
|
|
nk_input_key(&ctx, NK_KEY_SHIFT, 0);
|
|
}
|
|
glfwGetCursorPos(win, &x, &y);
|
|
nk_input_motion(&ctx, (int)x, (int)y);
|
|
nk_input_button(&ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS);
|
|
nk_input_button(&ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS);
|
|
nk_input_button(&ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS);
|
|
nk_input_end(&ctx);}
|
|
|
|
/* GUI */
|
|
file_browser_run(&browser, &ctx);
|
|
|
|
/* Draw */
|
|
glViewport(0, 0, display_width, display_height);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
|
|
device_draw(&device, &ctx, width, height, scale, NK_ANTI_ALIASING_ON);
|
|
glfwSwapBuffers(win);
|
|
}
|
|
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.home.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.directory.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.computer.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.desktop.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.default_file.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.text_file.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.music_file.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.font_file.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.img_file.handle.id);
|
|
glDeleteTextures(1,(const GLuint*)&media.icons.movie_file.handle.id);
|
|
|
|
file_browser_free(&browser);
|
|
nk_font_atlas_clear(&atlas);
|
|
nk_free(&ctx);
|
|
device_shutdown(&device);
|
|
glfwTerminate();
|
|
return 0;
|
|
}
|
|
|
|
|