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-rw-r--r--src/draw.c542
1 files changed, 542 insertions, 0 deletions
diff --git a/src/draw.c b/src/draw.c
new file mode 100644
index 0000000..34ac2ce
--- /dev/null
+++ b/src/draw.c
@@ -0,0 +1,542 @@
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+//Windows/Unix Compatability
+#if defined _WIN32 || defined _WIN64
+#include <ncurses/ncurses.h>
+#else
+#include <ncurses.h>
+#endif
+
+#include "include/cache.h"
+#include "include/draw.h"
+#include "include/entry.h"
+#include "include/group.h"
+#include "include/read_cfg.h"
+#define FLAG_COUNT 3
+#define GAP_SIZE 1
+#define MAX_LEN 6
+#define WIDTH (getmaxx(stdscr)) //width of the entire term
+#define HEIGHT (getmaxy(stdscr)) //height of the entire term
+
+bool *handle_args(int argc, char **argv, char **cfg_path);
+void print_help(char *exec_name);
+void update_display(bool resize);
+void draw_title();
+void draw_win(WINDOW *new, char *title);
+void fill_col(int mode); //0 = GROUP, 1 = ENTRY
+char *trim_name(char *name, char *path, int max_len);
+void update_col(int mode, int hl_where, bool resize); //0 = last, 1 = first; 0 = GROUP, 1 = ENTRY, 2 = INFO
+void switch_col();
+void trav_col(int new_i);
+int locateChar(char input);
+
+WINDOW *group_win = NULL;
+WINDOW *entry_win = NULL;
+WINDOW *info_win = NULL;
+int g_hover;
+int e_hover;
+int true_hover; //0 = hovering on groups, 1 = hovering on entries
+GROUP **g;
+ENTRY **e;
+int g_count;
+int e_count;
+int g_offset = 0;
+int e_offset = 0;
+
+int main(int argc, char **argv){
+ bool *flags_set = NULL;
+ char *cfg_path = malloc(sizeof(char) * BUF_LEN);
+ int input;
+ char full_command[BUF_LEN]; //what will be executed
+ int prev_width; //used to check if the window was resized
+ int prev_height; //used to check if the window was resized
+ int i;
+
+ srand(time(NULL));
+
+ flags_set = handle_args(argc, argv, &cfg_path);
+ if(flags_set[1]) return(0); //exit if help flag was passed
+ if(flags_set[2]) freopen("/dev/null", "w", stdout); //turn off output if quiet flag was passed
+ if(!flags_set[0]) strcpy(cfg_path, find_config()); //find_config if not config flag was passed
+
+ //Fill Groups
+ //read the contents of the cfg file; print help message if invalid
+ if(!cfg_interp(cfg_path)){
+ print_help(argv[0]);
+ return 0;
+ }
+
+ //Remove Empty Groups from the Array
+ clean_groups();
+ g = get_groups(); //retrieve results of cfg_interp
+ g_count = get_gcount(g); //retrieve number of groups in g (only do this after removing empty groups)
+
+ //check that there are is at least one valid group
+ if(g_count == 0){
+ printf("Error: No Entries!\n");
+ exit(0);
+ }
+
+ //load cached data
+ load_cache(&g_hover, &e_hover, &true_hover, cfg_path);
+
+ //reopen stdout for drawing menu
+ freopen("/dev/tty", "w", stdout);
+
+ initscr();
+ cbreak();
+ keypad(stdscr, true);
+ noecho();
+ set_escdelay(1); //used to avoid delay after ESC is pressed
+ start_color();
+
+ init_pair(0, COLOR_WHITE, COLOR_BLACK);
+ init_pair(1, COLOR_BLACK, COLOR_WHITE);
+ init_pair(2, COLOR_BLACK, COLOR_YELLOW);
+ init_pair(3, COLOR_BLACK, COLOR_GREEN);
+ attron(COLOR_PAIR(0));
+
+ prev_width = WIDTH;
+ prev_height = HEIGHT;
+
+ //update to show menu
+ update_display(false);
+
+ //update highlighting for loaded location
+ if(true_hover){
+ i = e_hover;
+ true_hover = 0;
+ trav_col(g_hover);
+ switch_col();
+ trav_col(i);
+ }
+ else trav_col(g_hover);
+ update_display(true);
+
+ //drawing is done, now run a while loop to receive input (ESC ends this loop)
+ while(input != 27){
+ input = getch();
+
+ switch(input){
+ case 9: //tab key
+ case KEY_LEFT:
+ case KEY_RIGHT:
+ //switch true_hover to look at the other column
+ switch_col();
+ break;
+
+ case KEY_DOWN:
+ trav_col((true_hover ? e_hover : g_hover)+1);
+ break;
+
+ case KEY_UP:
+ trav_col((true_hover ? e_hover : g_hover)-1);
+ break;
+
+ case KEY_PPAGE:
+ //case KEY_SUP:
+ trav_col(0);
+ break;
+
+ case KEY_NPAGE:
+ //case KEY_SDOWN:
+ trav_col((true_hover ? e_count : g_count)-1);
+ break;
+
+ case KEY_F(3):
+ //jump to random group/entry
+ trav_col(rand() % (true_hover ? e_count : g_count));
+ break;
+
+ case KEY_F(5):
+ //manual refresh (for debug purposes)
+ update_display(true);
+ break;
+
+ case 10: //enter key
+ //create a green highlight over the launched entry
+ mvwchgat(entry_win, 1+e_hover-e_offset, 1, entry_win->_maxx-1, A_DIM, 3, NULL);
+ wrefresh(entry_win);
+
+ launch();
+ break;
+
+ default: //a search char was entered, locate where to jump to
+ trav_col(locateChar(input));
+ }
+
+ //redraw all windows if term is resized
+ if(prev_width != WIDTH || prev_height != HEIGHT) update_display(true);
+
+ //update prevs
+ prev_width = WIDTH;
+ prev_height = HEIGHT;
+ }
+
+ endwin();
+
+ //save position data to cache
+ save_to_cache(g_hover, e_hover, true_hover, cfg_path);
+
+ return 0;
+}
+
+bool *handle_args(int argc, char **argv, char **cfg_path){
+ //create bool array with set flags
+ // 0 -> -c|--config
+ // 1 -> -h|--help
+ // 2 -> -q|--quiet
+
+ bool *flags_set = calloc(FLAG_COUNT, sizeof(bool));
+ int i;
+
+ for(i = 1; i < argc; ++i){
+ //-c
+ if(!strcmp(argv[i], "-c") || !strcmp(argv[i], "--config")){
+ ++i;
+ if(i < argc){
+ strcpy(*cfg_path, argv[i]);
+ flags_set[0] = true;
+ }
+ continue;
+ }
+
+ //-h
+ if(!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")){
+ print_help(argv[0]);
+ flags_set[1] = true;
+ break; //break rather than continue; program will quit if a help message is requested
+ }
+
+ //-q
+ if(!strcmp(argv[i], "-q") || !strcmp(argv[i], "--quiet")){
+ flags_set[2] = true;
+ continue;
+ }
+ }
+
+ return flags_set;
+}
+
+void print_help(char *exec_name){
+ printf("Usage: %s [OPTION] [FILE]\n", exec_name);
+ printf("Draw an Ncurses Menu to Launch Media from\n\n");
+
+ printf(" -c, --config Specify a configuration file path\n");
+ printf(" -h, --help Print this help message\n");
+ printf(" -q, --quiet Suppress stdout messages\n");
+}
+
+void update_display(bool resize){
+ if(WIDTH < 20 || HEIGHT < 6){
+ endwin();
+ printf("Unable to draw: Terminal Window is Too Small\n");
+ exit(0);
+ }
+
+ //title at the top (Terminal Media Launcher) (23 chars)
+ draw_title();
+
+ if(group_win != NULL) delwin(group_win);
+ if(entry_win != NULL) delwin(entry_win);
+ if(info_win != NULL) delwin(info_win);
+
+ //Draw Columns
+ group_win = newwin(HEIGHT-(5+GAP_SIZE), WIDTH/2, 2+GAP_SIZE, 0);
+ entry_win = newwin(HEIGHT-(5+GAP_SIZE), WIDTH-WIDTH/2, 2+GAP_SIZE, WIDTH/2);
+ info_win = newwin(3, WIDTH, HEIGHT-3, 0);
+ draw_win(group_win, "GROUP");
+ draw_win(entry_win, "ENTRY");
+ draw_win(info_win, "INFO");
+ update_col(0, 1, resize);
+
+ //start with hover on the first group, draw the entries from the selected group, true_hover is over the groups (rather than the entries) (do update after first draw, only after subsequent (resize) updates)
+ if(resize){
+ update_col(1, 1, resize);
+ update_col(2, 0, resize);
+ }
+ curs_set(0); //hide the cursor
+ //move(3, (WIDTH/4)+10);
+ refresh();
+}
+
+void draw_title(){
+ WINDOW *title;
+
+ title = newwin(2, WIDTH, 0, 0);
+ refresh();
+ attron(A_BOLD | A_UNDERLINE);
+ move(0, (WIDTH-23)/2);
+ printw("Terminal Media Launcher");
+ attroff(A_BOLD | A_UNDERLINE);
+ box(title, 0, 0);
+ wrefresh(title);
+
+ return;
+}
+
+void draw_win(WINDOW *new, char *title){
+ int title_len = strlen(title);
+
+ box(new, 0, 0);
+ attron(A_UNDERLINE);
+ wmove(new, 0, (new->_maxx - title_len)/2);
+ wprintw(new, "%s", title);
+ attroff(A_UNDERLINE);
+ wrefresh(new);
+
+ return;
+}
+
+void fill_col(int mode){
+ //mode 0 = group
+ //mode 1 = entry
+
+ int i;
+ WINDOW *col = (mode ? entry_win : group_win);
+ int count = (mode ? e_count : g_count);
+ int offset = (mode ? e_offset : g_offset);
+ int max_len = col->_maxx-1; //longest possible string length that can be displayed in the window
+ int ycoord = 1;
+ int max_y = HEIGHT-(6+GAP_SIZE);
+ char *name;
+
+ for(i = 0+offset; i < count; i++){
+ if(ycoord >= max_y) break; //reached the bottom of the terminal window, stop drawing
+ name = (mode ? get_ename(e[i]) : get_gname(g[i]));
+
+ //the name is too long, take the group to the trimming function
+ if(strlen(name) > max_len) name = trim_name(name, (mode ? get_epath(e[i]) : get_gname(g[i])), max_len);
+ wmove(col, ycoord, 1);
+ wprintw(col, "%s", name);
+ ycoord++;
+ }
+
+ wrefresh(col);
+ return;
+}
+
+
+char *trim_name(char *name, char *path, int max_len){
+ char *relative;
+
+ //group name and path are equivalent: special procedure
+ if(!(strcmp(name, path))){
+ //find relative path name
+ relative = strrchr(name, '/');
+ name = relative+1;
+ if(strlen(name) <= max_len) return name;
+ }
+
+ name[max_len] = '\0';
+ return name;
+}
+
+void update_col(int mode, int hl_where, bool resize){
+ //mode 0 = group
+ //mode 1 = entry
+ //mode 2 = info
+
+ WINDOW *col;
+ char *name;
+ int name_len;
+ int y_hl;
+ char *execution;
+
+ switch(mode){
+ case 0:
+ col = group_win;
+ name = "GROUP";
+ name_len = 5;
+ break;
+
+ case 1:
+ col = entry_win;
+ name = "ENTRY";
+ name_len = 5;
+ break;
+
+ case 2:
+ col = info_win;
+ name = "EXECUTION";
+ name_len = 9;
+ break;
+
+
+ default:
+ return;
+ }
+
+ y_hl = (hl_where ? 1 : col->_maxy-1);
+
+ //reset the column window (including reboxing and redrawing the title)
+ wclear(col);
+ box(col, 0, 0);
+ wmove(col, 0, (col->_maxx - name_len)/2);
+ wprintw(col, name);
+ wrefresh(col);
+
+ //update certain info in the col only if not a resizing-related call
+ switch(mode){
+ case 0:
+ fill_col(0);
+ if(!resize) mvwchgat(group_win, y_hl, 1, group_win->_maxx-1, A_DIM, 2, NULL);
+ else mvwchgat(group_win, 1+g_hover-g_offset, 1, group_win->_maxx-1, A_DIM, (true_hover ? 1 : 2), NULL);
+ break;
+
+ case 1:
+ e_count = get_ecount(g[g_hover]);
+ e = get_entries(get_ghead(g[g_hover]), e_count);
+ fill_col(1);
+ if(!resize) mvwchgat(entry_win, y_hl, 1, entry_win->_maxx-1, A_DIM, 1, NULL);
+ else mvwchgat(entry_win, 1+e_hover-e_offset, 1, entry_win->_maxx-1, A_DIM, (true_hover ? 2 : 1), NULL);
+ break;
+
+ default:
+ execution = get_launch();
+ if(strlen(execution) >= info_win->_maxx){
+ execution[info_win->_maxx - 1] = '\0';
+ execution[info_win->_maxx - 2] = '.';
+ execution[info_win->_maxx - 3] = '.';
+ execution[info_win->_maxx - 4] = '.';
+ }
+ mvwprintw(info_win, 1, 1, execution);
+
+ }
+
+ wrefresh(col);
+ return;
+}
+
+void switch_col(){
+ true_hover = (true_hover+1) % 2;
+ if(true_hover){
+ mvwchgat(group_win, 1+g_hover, 1, group_win->_maxx-1, A_DIM, 1, NULL); //adjust group light
+ mvwchgat(entry_win, 1+e_hover, 1, entry_win->_maxx-1, A_DIM, 2, NULL); //adjust entry light
+ }
+ else{
+ mvwchgat(group_win, 1+g_hover, 1, group_win->_maxx-1, A_DIM, 2, NULL); //adjust group light
+ mvwchgat(entry_win, 1+e_hover, 1, entry_win->_maxx-1, A_DIM, 1, NULL); //adjust entry light
+ }
+ move(3, (WIDTH/4)+10);
+
+ wrefresh(group_win);
+ wrefresh(entry_win);
+ return;
+}
+
+void trav_col(int new_i){
+ int *focus = (true_hover ? &e_hover : &g_hover); //make it easy to know which column we are looking at
+ int *offset = (true_hover ? &e_offset : &g_offset);
+ int count = (true_hover ? e_count : g_count);
+ int max_hl = HEIGHT-(3+GAP_SIZE); //for some reason, this works
+ int min_hl = 5;
+ int oob_flag = 0; //0 = none, 1 = bottom, 2 = top
+
+ //check if the traversal is valid (i.e. not at top/bottom), alter if not
+ if(new_i < 0) return;
+ if(new_i >= count) new_i = count-1;
+
+ //reset previously highlighted entry and group, change focus
+ mvwchgat(entry_win, 1+e_hover-e_offset, 1, entry_win->_maxx-1, A_NORMAL, 0, NULL);
+ mvwchgat(group_win, 1+g_hover-g_offset, 1, group_win->_maxx-1, A_NORMAL, 0, NULL);
+ *focus = new_i;
+
+
+ //check offsets relating to new highlight, make sure highlight did not go oob
+ while(*focus-*offset+5 > max_hl){
+ (*offset)++;
+ oob_flag = 1;
+ }
+ while(*focus-*offset+5 < min_hl){
+ (*offset)--;
+ oob_flag = 2;
+ }
+
+ if(oob_flag > 0) (true_hover ? update_col(1, oob_flag-1, false) : update_col(0, oob_flag-1, false));
+
+ //highlight newly hovered upon entry/group
+ mvwchgat(entry_win, 1+e_hover-e_offset, 1, entry_win->_maxx-1, A_DIM, (true_hover ? 2 : 1), NULL);
+ mvwchgat(group_win, 1+g_hover-g_offset, 1, group_win->_maxx-1, A_DIM, (true_hover ? 1 : 2), NULL);
+ if(!true_hover){ //a little extra work regarding group hover
+ e_offset = 0;
+ update_col(1, 1, false);
+ e_hover = 0;
+ }
+
+ wrefresh(group_win);
+ wrefresh(entry_win);
+ update_col(2, 0, false);
+ return;
+}
+
+int locateChar(char input){
+ int location = (true_hover ? e_hover : g_hover);
+ bool fold_case = get_case_sensitivity();
+ char first_char;
+ int i;
+
+ if(fold_case && input >= 97 && input <= 122) input -= 32;
+
+ if(true_hover){ //hovering on entries
+ for(i = location+1; i < e_count; i++){
+ first_char = get_ename(e[i])[0];
+ if(fold_case && first_char >= 97 && first_char <= 122) first_char -= 32;
+ if(input == first_char){
+ location = i;
+ break;
+ }
+ }
+ }
+
+ else{ //hovering on groups
+ for(i = location+1; i < g_count; i++){
+ first_char = get_gname(g[i])[0];
+ if(fold_case && first_char >= 97 && first_char <= 122) first_char -= 32;
+ if(input == get_gname(g[i])[0]){
+ location = i;
+ break;
+ }
+ }
+ }
+
+ return location;
+}
+
+char *get_launch(){
+ char *program = get_gprog(g[g_hover]);
+ char *flags = get_gflags(g[g_hover]);
+ char *path = get_epath(e[e_hover]);
+ bool quotes = get_gquotes(g[g_hover]);
+ char *full_command = malloc(sizeof(char) * BUF_LEN);
+
+ full_command[0] = '\0';
+
+ //if the entry is an executable file (doesn't have a launcher)
+ if(!(strcmp(program, "./"))){
+ strcat(full_command, "\"");
+ strcat(full_command, path);
+ strcat(full_command, "\"");
+ }
+
+ else{
+ if(quotes) strcat(full_command, "\"");
+ strcat(full_command, program);
+ if(quotes) strcat(full_command, "\"");
+ if(flags[0] !='\0'){
+ strcat(full_command, " ");
+ strcat(full_command, flags);
+ }
+ strcat(full_command, " ");
+ strcat(full_command, "\"");
+ strcat(full_command, path);
+ strcat(full_command, "\"");
+ }
+
+ return full_command;
+
+}
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