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-rw-r--r--ui.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/ui.c b/ui.c
new file mode 100644
index 0000000..58f76d9
--- /dev/null
+++ b/ui.c
@@ -0,0 +1,234 @@
+// where is the ith entry in the file selector on the screen?
+// returns false if it's completely offscreen
+static bool file_selector_entry_pos(Ted const *ted, FileSelector const *fs,
+ u32 i, Rect *r) {
+ Rect bounds = fs->bounds;
+ float char_height = text_font_char_height(ted->font);
+ *r = rect(V2(bounds.pos.x, bounds.pos.y
+ + char_height // make room for cwd
+ + char_height * 1.5f // make room for line buffer
+ + char_height * (float)i),
+ V2(bounds.size.x, char_height));
+ return rect_clip_to_rect(r, bounds);
+}
+
+// clear the entries in the file selector
+static void file_selector_clear_entries(FileSelector *fs) {
+ for (u32 i = 0; i < fs->n_entries; ++i) {
+ free(fs->entries[i].name);
+ free(fs->entries[i].path);
+ }
+ free(fs->entries);
+ fs->entries = NULL;
+ fs->n_entries = 0;
+}
+
+static void file_selector_free(FileSelector *fs) {
+ file_selector_clear_entries(fs);
+ arr_clear(fs->cwd);
+}
+
+static int qsort_file_entry_cmp(void const *av, void const *bv) {
+ FileEntry const *a = av, *b = bv;
+ // put directories first
+ if (a->type > b->type) {
+ return -1;
+ }
+ if (a->type < b->type) {
+ return +1;
+ }
+ return strcmp_case_insensitive(a->name, b->name);
+}
+
+// change directory of file selector.
+void file_selector_cd(FileSelector *fs, char const *path) {
+ // @TODO: handle .. properly
+ if (path[0] == PATH_SEPARATOR
+#if _WIN32
+ // check for, e.g. C:\ at start of path
+ || (strlen(path) >= 3 && path[1] == ':' && path[2] == '\\')
+#endif
+ ) {
+ // this is an absolute path. discard our previous cwd.
+ arr_clear(fs->cwd);
+ }
+ if (strlen(fs->cwd) > 0 && fs->cwd[strlen(fs->cwd) - 1] != PATH_SEPARATOR) {
+ // add path separator to end if not already there
+ arr_append_str(fs->cwd, PATH_SEPARATOR_STR);
+ }
+ arr_append_str(fs->cwd, path);
+}
+
+// returns the name of the selected file, or NULL
+// if none was selected. the returned pointer should be freed.
+static char *file_selector_update(Ted *ted, FileSelector *fs) {
+ String32 search_term32 = buffer_get_line(&ted->line_buffer, 0);
+ if (!fs->cwd) {
+ // set the file selector's directory to our current directory.
+ arr_append_str(fs->cwd, ted->cwd);
+ }
+ char *search_term = search_term32.len ? str32_to_utf8_cstr(search_term32) : NULL;
+
+ bool submitted = fs->submitted;
+ fs->submitted = false;
+
+ bool on_screen = true;
+ for (u32 i = 0; i < fs->n_entries; ++i) {
+ Rect r = {0};
+ FileEntry *entry = &fs->entries[i];
+ char *name = entry->name, *path = entry->path;
+ FsType type = entry->type;
+
+ // check if this entry was clicked on
+ if (on_screen && file_selector_entry_pos(ted, fs, i, &r)) {
+ for (u32 c = 0; c < ted->nmouse_clicks[SDL_BUTTON_LEFT]; ++c) {
+ if (rect_contains_point(r, ted->mouse_clicks[SDL_BUTTON_LEFT][c])) {
+ // this option was selected
+ switch (type) {
+ case FS_FILE:
+ free(search_term);
+ if (path) return str_dup(path);
+ break;
+ case FS_DIRECTORY:
+ file_selector_cd(fs, name);
+ break;
+ default: break;
+ }
+ }
+ }
+ } else on_screen = false;
+
+ // check if we submitted this entry
+ if (submitted && streq(search_term, name)) {
+ switch (type) {
+ case FS_FILE:
+ free(search_term);
+ if (path) return str_dup(path);
+ break;
+ case FS_DIRECTORY:
+ file_selector_cd(fs, name);
+ break;
+ default: break;
+ }
+ }
+ }
+
+ // user pressed enter after typing a non-existent file into the search bar
+ if (submitted) {
+ // don't do anything for now
+ }
+
+ // free previous entries
+ file_selector_clear_entries(fs);
+ // get new entries
+ char **files = fs_list_directory(fs->cwd);
+ if (files) {
+ char const *cwd = fs->cwd;
+ bool cwd_has_path_sep = cwd[strlen(cwd) - 1] == PATH_SEPARATOR;
+ u32 nfiles;
+ for (nfiles = 0; files[nfiles]; ++nfiles);
+
+ // filter entries
+ bool increment = true;
+ for (u32 i = 0; i < nfiles; i += increment, increment = true) {
+ // remove if the file name does not contain the search term,
+ bool remove = search_term && *search_term && !stristr(files[i], search_term);
+ // or if this is just the current directory
+ remove |= streq(files[i], ".");
+ if (remove) {
+ // remove this one
+ free(files[i]);
+ --nfiles;
+ if (nfiles) {
+ files[i] = files[nfiles];
+ }
+ increment = false;
+ }
+ }
+
+ if (nfiles) {
+ FileEntry *entries = ted_calloc(ted, nfiles, sizeof *entries);
+ if (entries) {
+ fs->n_entries = nfiles;
+ fs->entries = entries;
+ for (u32 i = 0; i < nfiles; ++i) {
+ char *name = files[i];
+ entries[i].name = name;
+ // add cwd to start of file name
+ size_t path_size = strlen(name) + strlen(cwd) + 3;
+ char *path = ted_calloc(ted, 1, path_size);
+ if (path) {
+ snprintf(path, path_size - 1, "%s%s%s", cwd, cwd_has_path_sep ? PATH_SEPARATOR_STR : "", name);
+ entries[i].path = path;
+ entries[i].type = fs_path_type(path);
+ } else {
+ entries[i].path = NULL; // what can we do?
+ entries[i].type = FS_NON_EXISTENT;
+ }
+ }
+ }
+ qsort(entries, nfiles, sizeof *entries, qsort_file_entry_cmp);
+ }
+
+ free(files);
+ } else {
+ ted_seterr(ted, "Couldn't list directory '%s'.", fs->cwd);
+ }
+
+ free(search_term);
+ return NULL;
+}
+
+static void file_selector_render(Ted *ted, FileSelector *fs) {
+ Settings const *settings = &ted->settings;
+ u32 const *colors = settings->colors;
+ Rect bounds = fs->bounds;
+ u32 n_entries = fs->n_entries;
+ FileEntry const *entries = fs->entries;
+ Font *font = ted->font;
+ float char_height = text_font_char_height(ted->font);
+ float x1, y1, x2, y2;
+ rect_coords(bounds, &x1, &y1, &x2, &y2);
+
+ // current working directory @TODO
+
+
+ // search buffer
+ float line_buffer_height = char_height * 1.5f;
+ buffer_render(&ted->line_buffer, x1, y1, x2, y1 + line_buffer_height);
+ y1 += line_buffer_height;
+
+
+ for (u32 i = 0; i < n_entries; ++i) {
+ // highlight entry user is mousing over
+ Rect r;
+ if (!file_selector_entry_pos(ted, fs, i, &r)) break;
+ if (rect_contains_point(r, ted->mouse_pos)) {
+ glBegin(GL_QUADS);
+ gl_color_rgba(colors[COLOR_MENU_HL]);
+ rect_render(r);
+ glEnd();
+ }
+ }
+
+ TextRenderState text_render_state = {.min_x = x1, .max_x = x2, .min_y = y1, .max_y = y2, .render = true};
+ // render file names themselves
+ for (u32 i = 0; i < n_entries; ++i) {
+ Rect r;
+ if (!file_selector_entry_pos(ted, fs, i, &r)) break;
+ float x = r.pos.x, y = r.pos.y;
+ switch (entries[i].type) {
+ case FS_FILE:
+ gl_color_rgba(colors[COLOR_TEXT]);
+ break;
+ case FS_DIRECTORY:
+ gl_color_rgba(colors[COLOR_TEXT_FOLDER]);
+ break;
+ default:
+ gl_color_rgba(colors[COLOR_TEXT_OTHER]);
+ break;
+ }
+ text_render_with_state(font, &text_render_state, entries[i].name, x, y);
+ }
+}
+
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