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v4k-git-backup/engine/split/3rd_nuklear_filebrowser.h

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// file browser for nuklear, based on https://github.com/vurtun/nuklear/blob/master/example/file_browser.c (public domain)
// - rlyeh, public domain
//
// changelog:
// - ported to FWK api
// - namespaced symbols
// - diverse win32 fixes
// - adaptive cols/rows
// - removed nk_begin()/nk_end() pairs
// - dangling nk_group_begin/end() pairs
// - simplified file<->media_group concept
// - minor cosmetics
#ifdef _WIN32
#include <direct.h> // _getcwd()
#else
#include <unistd.h> // getcwd()
#include <pwd.h> // getpwuid()
#endif
#if 1
#define BROWSER_PRINTF(...) do {} while(0)
#else
#define BROWSER_PRINTF printf
#endif
enum browser_groups {
BROWSER_FOLDER,
BROWSER_HOME,
BROWSER_DESKTOP,
BROWSER_COMPUTER,
BROWSER_PROJECT,
BROWSER_MAXFOLDERS,
BROWSER_MAXTYPES = 64,
};
struct browser_media_group {
unsigned icon;
const char *extensions;
};
struct browser_media {
int font;
int icon_sheet;
struct nk_image custom_folders[BROWSER_MAXFOLDERS];
struct nk_image custom_files[BROWSER_MAXTYPES];
struct browser_media_group group[BROWSER_MAXTYPES];
} media = {0};
void browser_config_dir(struct nk_image icon, unsigned counter) {
if( counter < BROWSER_MAXFOLDERS ) {
media.custom_folders[ counter ] = icon;
}
}
void browser_config_type(struct nk_image icon, const char *extensions) {
static int counter = 0;
if( counter < BROWSER_MAXTYPES ) {
media.custom_files[ counter ] = icon;
media.group[ counter ].icon = counter;
media.group[ counter ].extensions = extensions;
++counter;
}
}
#define BROWSER_MAX_PATH 512
struct browser {
/* path */
char file[BROWSER_MAX_PATH]; // selection
char directory[BROWSER_MAX_PATH]; // current cwd while browsing
char home[BROWSER_MAX_PATH];
char desktop[BROWSER_MAX_PATH];
char computer[BROWSER_MAX_PATH];
char project[BROWSER_MAX_PATH]; // cwd when first invoked
/* directory content */
array(char*) files;
array(char*) directories;
size_t file_count;
size_t dir_count;
/* view mode */
bool listing;
float zooming;
};
static struct nk_image* media_icon_for_file(const char *file) {
/* extract extension .xxx from file */
char *ext = strrchr(file, '.');
if( ext && strlen(ext) < 16 ) {
char ext_dot[16+1];
snprintf(ext_dot, 16, "%s.", ext);
/* check for all file definition of all groups for fitting extension. skip first group (default) */
for (int i = 1; i < BROWSER_MAXTYPES && media.group[i].extensions; ++i) {
if( strstri(media.group[i].extensions, ext_dot) ) {
return &media.custom_files[ media.group[i].icon ];
}
}
}
// return first (default) group
return &media.custom_files[0];
}
static void browser_reload_directory_content(struct browser *browser, const char *path) {
if(path[0] == '\0') path = va("./");
if(!strend(path, "/")) path = va("%s/", path);
for(int i = 0; i < array_count(browser->files); ++i) FREE(browser->files[i]);
for(int i = 0; i < array_count(browser->directories); ++i) FREE(browser->directories[i]);
array_resize(browser->files, 0);
array_resize(browser->directories, 0);
BROWSER_PRINTF("searching at %s\n", path);
array(char*) list = file_list(path);
for( int i = 0, end = array_count(list); i < end; ++i ) {
char *absolute = file_pathabs(ifndef(win32, list[i], va("%s/%s", path, list[i]))); // ../dir/./file.ext -> c:/prj/dir/file.ext
BROWSER_PRINTF("%s->%s %d->", list[i], absolute, file_directory(absolute) );
if( file_directory(absolute) ) {
// remove last '/' if present. ok to overwrite absolute var, file_*() API returns writeable strings.
char *dir = absolute; if( dir[ strlen(dir) - 1 ] == '/' ) dir[ strlen(dir) - 1 ] = '\0';
dir = file_name(dir); // /home/rlyeh/prj/fwk/art -> art
BROWSER_PRINTF("%s\n", dir);
if( dir[0] != '.' ) // skip special files, folders and internal files like .git or .art.zip
array_push(browser->directories, STRDUP(dir));
} else {
const char *fname = file_name(absolute);
BROWSER_PRINTF("%s\n", fname);
if( fname[0] != '.' ) // skip special files, folders and internal files like .git or .art.zip
array_push(browser->files, STRDUP(fname));
}
}
browser->file_count = array_count(browser->files);
browser->dir_count = array_count(browser->directories);
}
static void browser_chdir_and_reload_directory_content(struct browser *browser, const char *path) {
if( path != browser->directory ) strncpy(browser->directory, path, BROWSER_MAX_PATH);
browser_reload_directory_content(browser, path);
}
static void browser_init(struct browser *browser) {
memset(browser, 0, sizeof(*browser));
{
/* load files and sub-directory list */
const char *home = getenv("HOME");
#ifdef _WIN32
if (!home) home = getenv("USERPROFILE");
#else
if (!home) home = getpwuid(getuid())->pw_dir;
#endif
snprintf(browser->home, BROWSER_MAX_PATH, "%s/", home);
snprintf(browser->desktop, BROWSER_MAX_PATH, "%s/Desktop/", home);
snprintf(browser->computer, BROWSER_MAX_PATH, "%s", ifdef(win32, va("%.*s", 3, getenv("windir")), "/"));
{
ifdef(win32, _getcwd, getcwd)(browser->project, sizeof(browser->project) - 1); // -1 == room for '/'
strcat(browser->project, "/");
}
BROWSER_PRINTF("%s\n", browser->home);
BROWSER_PRINTF("%s\n", browser->desktop);
BROWSER_PRINTF("%s\n", browser->computer);
BROWSER_PRINTF("%s\n", browser->project);
browser_chdir_and_reload_directory_content(browser, browser->project);
}
}
static void browser_free(struct browser *browser) {
for(int i = 0; i < array_count(browser->files); ++i) FREE(browser->files[i]);
for(int i = 0; i < array_count(browser->directories); ++i) FREE(browser->directories[i]);
array_free(browser->files);
array_free(browser->directories);
memset(browser, 0, sizeof(*browser));
}
static int browser_run(struct nk_context *ctx, struct browser *browser, int windowed, struct nk_rect total_space) {
int clicked = 0;
static float ratio[] = {0.25f, NK_UNDEFINED};
float spacing_x = ctx->style.window.spacing.x;
/* output path directory selector in the menubar */
ctx->style.window.spacing.x = 0;
if( windowed ) nk_menubar_begin(ctx);
{
char *d = browser->directory;
#ifdef _WIN32
char *begin = d;
#else
char *begin = d + 1;
#endif
nk_layout_row_template_begin(ctx, 25);
nk_layout_row_template_push_variable(ctx, 40);
nk_layout_row_template_push_variable(ctx, 40);
nk_layout_row_template_push_variable(ctx, 40);
nk_layout_row_template_end(ctx);
if (nk_button_label(ctx, !browser->listing ? ICON_MD_LIST : ICON_MD_GRID_VIEW)) {
browser->listing ^= 1;
}
while (*d++) {
if (*d == '/') {
*d = '\0';
if (nk_button_label(ctx, va("%s" ICON_MD_ARROW_RIGHT, file_name(begin)))) {
*d++ = '/'; *d = '\0';
browser_chdir_and_reload_directory_content(browser, browser->directory);
break;
}
*d = '/';
begin = d + 1;
}
}
}
if( windowed ) nk_menubar_end(ctx);
ctx->style.window.spacing.x = spacing_x;
if(nk_window_has_focus(ctx)) {
browser->zooming = clampf( browser->zooming + (input(KEY_LCTRL) || input(KEY_RCTRL)) * input_diff(MOUSE_W) * 0.1, 1, 3);
}
bool compact = 0, tiny = browser->listing; // compact, no left panel. tiny, no large icons
size_t cols = total_space.w / (100 * browser->zooming);
int icon_height = (67 * browser->zooming) * (tiny ? 0.33 : 1.); // icon height (96) + button padding (??). originally: 135
/**/ if( tiny ) cols = (int)cols+1.5, cols /= 2, compact = total_space.w < 500; // cols <= 2;
else cols = (int)cols+1, compact = total_space.w < 500; // cols <= 5;
if( cols < 1 ) cols=1;
/* window layout */
nk_layout_row(ctx, NK_DYNAMIC, total_space.h, compact ? 1 : 2, compact ? ratio+1 : ratio);
if( !compact )
if( nk_group_begin(ctx, "Special", NK_WINDOW_NO_SCROLLBAR) ) {
nk_layout_row_dynamic(ctx, 40, 1);
if (nk_button_image_label(ctx,media.custom_folders[BROWSER_HOME],"Home",NK_TEXT_RIGHT))
browser_chdir_and_reload_directory_content(browser, browser->home);
if (nk_button_image_label(ctx,media.custom_folders[BROWSER_DESKTOP],"Desktop",NK_TEXT_RIGHT))
browser_chdir_and_reload_directory_content(browser, browser->desktop);
if (nk_button_image_label(ctx,media.custom_folders[BROWSER_COMPUTER],"Computer",NK_TEXT_RIGHT))
browser_chdir_and_reload_directory_content(browser, browser->computer);
if (nk_button_image_label(ctx,media.custom_folders[BROWSER_PROJECT],"Project",NK_TEXT_RIGHT))
browser_chdir_and_reload_directory_content(browser, browser->project);
nk_group_end(ctx);
}
/* output directory content window */
if(nk_group_begin(ctx, "Content", windowed ? NK_WINDOW_NO_SCROLLBAR : 0)) {
int index = -1;
size_t i = 0, j = 0, k = 0;
size_t rows = 0;
size_t count = browser->dir_count + browser->file_count;
rows = count / cols;
for (i = 0; i <= rows; i += 1) {
if(!tiny)
{size_t n = j + cols;
nk_layout_row_dynamic(ctx, icon_height, (int)cols);
for (; j < count && j < n; ++j) {
/* draw one row of icons */
if (j < browser->dir_count) {
/* draw and execute directory buttons */
if (nk_button_image(ctx,media.custom_folders[BROWSER_FOLDER]))
index = (int)j;
} else {
/* draw and execute files buttons */
struct nk_image *icon;
size_t fileIndex = ((size_t)j - browser->dir_count);
icon = media_icon_for_file(browser->files[fileIndex]);
if (nk_button_image(ctx, *icon)) {
snprintf(browser->file, BROWSER_MAX_PATH, "%s%s", browser->directory, browser->files[fileIndex]);
clicked = 1;
}
}
}}
if(!tiny)
{size_t n = k + cols;
nk_layout_row_dynamic(ctx, 20, (int)cols);
for (; k < count && k < n; k++) {
/* draw one row of labels */
if (k < browser->dir_count) {
nk_label(ctx, browser->directories[k], NK_TEXT_CENTERED);
} else {
size_t t = k-browser->dir_count;
nk_label(ctx,browser->files[t],NK_TEXT_CENTERED);
}
}}
if(tiny)
{size_t n = j + cols;
nk_layout_row_dynamic(ctx, icon_height, (int)cols);
for (; j < count && j < n; ++j) {
/* draw one row of icons */
if (j < browser->dir_count) {
/* draw and execute directory buttons */
if (nk_button_image_label(ctx,media.custom_folders[BROWSER_FOLDER], browser->directories[j],NK_TEXT_RIGHT))
index = (int)j;
} else {
/* draw and execute files buttons */
struct nk_image *icon;
size_t fileIndex = ((size_t)j - browser->dir_count);
icon = media_icon_for_file(browser->files[fileIndex]);
size_t t = j-browser->dir_count;
if (nk_button_image_label(ctx, *icon, browser->files[t],NK_TEXT_RIGHT)) {
snprintf(browser->file, BROWSER_MAX_PATH, "%s%s", browser->directory, browser->files[fileIndex]);
clicked = 1;
}
}
#if 0
bool has_focus = nk_window_has_focus(ctx); // @fixme: move out of loop
bool has_popups = ui_popups(); // @fixme: move out of loop
if( !has_popups && has_focus ) {
struct nk_rect bounds = nk_widget_bounds(ctx);
if (nk_input_is_mouse_hovering_rect(&ctx->input, bounds) ) {
char *name = j < browser->dir_count ? browser->directories[j] : browser->files[j-browser->dir_count];
char fullpath[PATH_MAX];
snprintf(fullpath, PATH_MAX, "%s%s", browser->directory, name);
struct stat t = {0};
if( stat( fullpath, &t ) != -1 ) {
char tooltip[256];
snprintf(tooltip, 256,
"Path: %s\n"
"Type: %lld\n" // file type and mode
"Size: %lld\n" // file size
"Owner: %lld\n" // user ID of file owner
"Modified: %s (%lld)", // last modification date
name, (int64_t)t.st_mode, (int64_t)t.st_size, (int64_t)t.st_uid, ctime(&t.st_mtime), (int64_t)t.st_mtime
);
nk_tooltip(ctx, tooltip);
}
}
}
#endif
}}
}
if (index != -1) {
BROWSER_PRINTF("%s + %s = ", browser->directory, browser->directories[index]);
size_t n = strlen(browser->directory);
snprintf(browser->directory + n, BROWSER_MAX_PATH - n, "%s/", browser->directories[index]);
BROWSER_PRINTF("%s\n", browser->directory);
browser_chdir_and_reload_directory_content(browser, browser->directory);
}
nk_group_end(ctx);
}
return clicked;
}
static struct nk_image icon_load(const char *filename) {
texture_t t = texture(filename, 0);
return nk_image_id((int)t.id);
}
static struct nk_image icon_load_rect(unsigned id, unsigned w, unsigned h, unsigned wcell, unsigned hcell, unsigned col, unsigned row) {
return nk_subimage_id((int)id, w, h, (struct nk_rect){ wcell * col, hcell * row, wcell, hcell });
}
/* demo:
struct browser browser = {0};
browser_init(&browser);
browser_config_dir(nk_image, BROWSER_HOME);
browser_config_dir(nk_image, BROWSER_PROJECT);
// [...]
browser_config_type(nk_image, ".ext1.ext2.ext3.");
browser_config_type(nk_image, ".ext1.ext2.ext3.");
browser_config_type(nk_image, ".ext1.ext2.ext3.");
// [...]
[...]
if( nk_begin(ctx, "window", ...) ) {
struct nk_rect total_space = nk_window_get_content_region(ctx);
if( browser_run(ctx, &browser, 0, total_space) ) {
puts( browser->directory );
puts( browser->file );
}
}
nk_end();
*/
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