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#include "libslang.h" #include "ui.h" #include <linux/compiler.h> #include <linux/list.h> #include <linux/rbtree.h> #include <stdlib.h> #include <sys/ttydefaults.h> #include "browser.h" #include "helpline.h" #include "../color.h" #include "../util.h" #include <stdio.h> static int ui_browser__percent_color(double percent, bool current) { if (current) return HE_COLORSET_SELECTED; if (percent >= MIN_RED) return HE_COLORSET_TOP; if (percent >= MIN_GREEN) return HE_COLORSET_MEDIUM; return HE_COLORSET_NORMAL; } void ui_browser__set_color(struct ui_browser *self __used, int color) { SLsmg_set_color(color); } void ui_browser__set_percent_color(struct ui_browser *self, double percent, bool current) { int color = ui_browser__percent_color(percent, current); ui_browser__set_color(self, color); } void ui_browser__gotorc(struct ui_browser *self, int y, int x) { SLsmg_gotorc(self->y + y, self->x + x); } void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence) { struct list_head *head = self->entries; struct list_head *pos; switch (whence) { case SEEK_SET: pos = head->next; break; case SEEK_CUR: pos = self->top; break; case SEEK_END: pos = head->prev; break; default: return; } if (offset > 0) { while (offset-- != 0) pos = pos->next; } else { while (offset++ != 0) pos = pos->prev; } self->top = pos; } void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence) { struct rb_root *root = self->entries; struct rb_node *nd; switch (whence) { case SEEK_SET: nd = rb_first(root); break; case SEEK_CUR: nd = self->top; break; case SEEK_END: nd = rb_last(root); break; default: return; } if (offset > 0) { while (offset-- != 0) nd = rb_next(nd); } else { while (offset++ != 0) nd = rb_prev(nd); } self->top = nd; } unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self) { struct rb_node *nd; int row = 0; if (self->top == NULL) self->top = rb_first(self->entries); nd = self->top; while (nd != NULL) { ui_browser__gotorc(self, row, 0); self->write(self, nd, row); if (++row == self->height) break; nd = rb_next(nd); } return row; } bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row) { return self->top_idx + row == self->index; } void ui_browser__refresh_dimensions(struct ui_browser *self) { int cols, rows; newtGetScreenSize(&cols, &rows); self->width = cols - 1; self->height = rows - 2; self->y = 1; self->x = 0; } void ui_browser__reset_index(struct ui_browser *self) { self->index = self->top_idx = 0; self->seek(self, 0, SEEK_SET); } void ui_browser__add_exit_key(struct ui_browser *self, int key) { newtFormAddHotKey(self->form, key); } void ui_browser__add_exit_keys(struct ui_browser *self, int keys[]) { int i = 0; while (keys[i] && i < 64) { ui_browser__add_exit_key(self, keys[i]); ++i; } } int ui_browser__show(struct ui_browser *self, const char *title, const char *helpline, ...) { va_list ap; int keys[] = { NEWT_KEY_UP, NEWT_KEY_DOWN, NEWT_KEY_PGUP, NEWT_KEY_PGDN, NEWT_KEY_HOME, NEWT_KEY_END, ' ', NEWT_KEY_LEFT, NEWT_KEY_ESCAPE, 'q', CTRL('c'), 0 }; if (self->form != NULL) newtFormDestroy(self->form); ui_browser__refresh_dimensions(self); self->form = newtForm(NULL, NULL, 0); if (self->form == NULL) return -1; self->sb = newtVerticalScrollbar(self->width, 1, self->height, HE_COLORSET_NORMAL, HE_COLORSET_SELECTED); if (self->sb == NULL) return -1; pthread_mutex_lock(&ui__lock); SLsmg_gotorc(0, 0); ui_browser__set_color(self, NEWT_COLORSET_ROOT); slsmg_write_nstring(title, self->width); ui_browser__add_exit_keys(self, keys); newtFormAddComponent(self->form, self->sb); va_start(ap, helpline); ui_helpline__vpush(helpline, ap); va_end(ap); pthread_mutex_unlock(&ui__lock); return 0; } void ui_browser__hide(struct ui_browser *self) { pthread_mutex_lock(&ui__lock); newtFormDestroy(self->form); self->form = NULL; ui_helpline__pop(); pthread_mutex_unlock(&ui__lock); } int ui_browser__refresh(struct ui_browser *self) { int row; pthread_mutex_lock(&ui__lock); newtScrollbarSet(self->sb, self->index, self->nr_entries - 1); row = self->refresh(self); ui_browser__set_color(self, HE_COLORSET_NORMAL); SLsmg_fill_region(self->y + row, self->x, self->height - row, self->width, ' '); pthread_mutex_unlock(&ui__lock); return 0; } int ui_browser__run(struct ui_browser *self) { struct newtExitStruct es; if (ui_browser__refresh(self) < 0) return -1; while (1) { off_t offset; newtFormRun(self->form, &es); if (es.reason != NEWT_EXIT_HOTKEY) break; switch (es.u.key) { case NEWT_KEY_DOWN: if (self->index == self->nr_entries - 1) break; ++self->index; if (self->index == self->top_idx + self->height) { ++self->top_idx; self->seek(self, +1, SEEK_CUR); } break; case NEWT_KEY_UP: if (self->index == 0) break; --self->index; if (self->index < self->top_idx) { --self->top_idx; self->seek(self, -1, SEEK_CUR); } break; case NEWT_KEY_PGDN: case ' ': if (self->top_idx + self->height > self->nr_entries - 1) break; offset = self->height; if (self->index + offset > self->nr_entries - 1) offset = self->nr_entries - 1 - self->index; self->index += offset; self->top_idx += offset; self->seek(self, +offset, SEEK_CUR); break; case NEWT_KEY_PGUP: if (self->top_idx == 0) break; if (self->top_idx < self->height) offset = self->top_idx; else offset = self->height; self->index -= offset; self->top_idx -= offset; self->seek(self, -offset, SEEK_CUR); break; case NEWT_KEY_HOME: ui_browser__reset_index(self); break; case NEWT_KEY_END: offset = self->height - 1; if (offset >= self->nr_entries) offset = self->nr_entries - 1; self->index = self->nr_entries - 1; self->top_idx = self->index - offset; self->seek(self, -offset, SEEK_END); break; default: return es.u.key; } if (ui_browser__refresh(self) < 0) return -1; } return -1; } unsigned int ui_browser__list_head_refresh(struct ui_browser *self) { struct list_head *pos; struct list_head *head = self->entries; int row = 0; if (self->top == NULL || self->top == self->entries) self->top = head->next; pos = self->top; list_for_each_from(pos, head) { ui_browser__gotorc(self, row, 0); self->write(self, pos, row); if (++row == self->height) break; } return row; } static struct newtPercentTreeColors { const char *topColorFg, *topColorBg; const char *mediumColorFg, *mediumColorBg; const char *normalColorFg, *normalColorBg; const char *selColorFg, *selColorBg; const char *codeColorFg, *codeColorBg; } defaultPercentTreeColors = { "red", "lightgray", "green", "lightgray", "black", "lightgray", "lightgray", "magenta", "blue", "lightgray", }; void ui_browser__init(void) { struct newtPercentTreeColors *c = &defaultPercentTreeColors; sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg); sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg); sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg); sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg); sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg); }
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