Basic controls for tui

1 files changed, 87 insertions, 17 deletions

diff --git a/src/draw.c b/src/draw.c
index 26d4d55..c6fb82c 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -9,13 +9,27 @@
 #include "group.h"
 #include "tui_text.h"
 
-void draw_data(Tui_text **main_text, Group **groups, int g_count, Entry **entries, int e_count, WINDOW *w, int start_x, int start_y);
+// main window-related globals
+WINDOW *w_main;
+Tui_text *main_text = NULL; // keep track of text location - this array will be in order - top to bottom
+
+// hover-related globals
+int hover_index; // current hover (as index for Tui_text, usually main_text)
+int hover_count; // number of hovers available
+
+
+// initialize a window
+void draw_data(Group **groups, int g_count, Entry **entries, int e_count, WINDOW *w, int start_x, int start_y);
+
+// move hover to a new Tui_text in window w
+void hover_move(WINDOW *w, int new_hover_index);
+
+// handle feedback loop
+void feedback_loop();
 
 
 void tui_init(Group **groups, int g_count, Entry **entries, int e_count) {
 	int input; // capture user input
-	Tui_text *main_text = NULL; // keep track of text location - this array will be in order - top to bottom
-	WINDOW *w_main;
 	
 	// set an interrupt to end cleanly
 	signal(SIGINT, tui_end);
@@ -32,10 +46,17 @@ void tui_init(Group **groups, int g_count, Entry **entries, int e_count) {
 	refresh();
 
 	// draw groups and entries
-	draw_data(&main_text, groups, g_count, entries, e_count, w_main, 1, 1);
+	draw_data(groups, g_count, entries, e_count, w_main, 1, 1);
 	wrefresh(w_main);
 
-	input = getch();
+	// initialize hover
+	hover_index = 0;
+	hover_move(w_main, 0);
+	wrefresh(w_main);
+
+	// feedback loop
+	feedback_loop();
+
 	tui_end();
 	free(*groups);
 	free(*entries);
@@ -47,25 +68,28 @@ void tui_end() {
 
 
 
-void draw_data(Tui_text **main_text, Group **groups, int g_count, Entry **entries, int e_count, WINDOW *w, int start_x, int start_y) {
+void draw_data(Group **groups, int g_count, Entry **entries, int e_count, WINDOW *w, int start_x, int start_y) {
 	int i;
 	int j;
 	int mt_index = 0; // separate index to keep track of main_text array
 	char buf[BUF_LEN];
 	
 	// initialize main_text
-	if(*main_text != NULL) free(*main_text);
-	*main_text = malloc(sizeof(Tui_text) * (e_count + g_count));
+	if(main_text != NULL) free(main_text);
+	main_text = malloc(sizeof(Tui_text) * (e_count + g_count));
+
+	// set hover count
+	hover_count = e_count + g_count;
 
 	for(i = 0; i < g_count; ++i) {
 		// print group
 		mvwprintw(w, start_y, start_x, "%s", group_get_name(&((*groups)[i])));
 
 		// save group in main_text array
-		tui_text_set_x(&((*main_text)[mt_index]), start_x);
-		tui_text_set_y(&((*main_text)[mt_index]), start_y);
-		tui_text_set_type(&((*main_text)[mt_index]), GROUP);
-		tui_text_set_data(&((*main_text)[mt_index]), &((*groups)[i]));
+		tui_text_set_x(&(main_text[mt_index]), start_x);
+		tui_text_set_y(&(main_text[mt_index]), start_y);
+		tui_text_set_type(&(main_text[mt_index]), GROUP);
+		tui_text_set_data(&(main_text[mt_index]), &((*groups)[i]));
 		++mt_index;
 
 		++start_y;
@@ -73,7 +97,7 @@ void draw_data(Tui_text **main_text, Group **groups, int g_count, Entry **entrie
 			// check if an entry belongs to the group
 			if(entry_get_group_id(&((*entries)[j])) == group_get_id(&((*groups)[i]))) {
 				// print entry
-				mvwprintw(w, start_y, start_x, "\t");
+				mvwprintw(w, start_y, start_x, "  ");
 				// print date if there is one
 				if(entry_get_due_date(&((*entries)[j])) != NULL) {
 					memset(buf, 0, BUF_LEN);
@@ -84,10 +108,10 @@ void draw_data(Tui_text **main_text, Group **groups, int g_count, Entry **entrie
 				wprintw(w, "%s", entry_get_title(&((*entries)[j])));
 
 				// save entry in main_text array
-				tui_text_set_x(&((*main_text)[mt_index]), start_x);
-				tui_text_set_y(&((*main_text)[mt_index]), start_y);
-				tui_text_set_type(&((*main_text)[mt_index]), ENTRY);
-				tui_text_set_data(&((*main_text)[mt_index]), &((*entries)[j]));
+				tui_text_set_x(&(main_text[mt_index]), start_x+2);
+				tui_text_set_y(&(main_text[mt_index]), start_y);
+				tui_text_set_type(&(main_text[mt_index]), ENTRY);
+				tui_text_set_data(&(main_text[mt_index]), &((*entries)[j]));
 				mt_index++;
 
 				++start_y;
@@ -96,3 +120,49 @@ void draw_data(Tui_text **main_text, Group **groups, int g_count, Entry **entrie
 		++start_y;
 	}
 }
+
+void hover_move(WINDOW *w, int new_hover_index) {
+	// avoid going out of bounds
+	if(new_hover_index < 0) new_hover_index = 0;
+	if(new_hover_index >= hover_count) new_hover_index = hover_count-1;
+
+	// unset previous hover
+	mvwchgat(w, 
+			tui_text_get_y(&(main_text[hover_index])), 
+			tui_text_get_x(&(main_text[hover_index])), 
+			w->_maxx - tui_text_get_x(&(main_text[hover_index])), 
+			A_NORMAL, 0, NULL);
+
+	// set new hover
+	hover_index = new_hover_index;
+	mvwchgat(w, 
+			tui_text_get_y(&(main_text[hover_index])), 
+			tui_text_get_x(&(main_text[hover_index])), 
+			w->_maxx - tui_text_get_x(&(main_text[hover_index])), 
+			A_REVERSE, 0, NULL);
+}
+
+void feedback_loop() {
+	int input;
+	bool finish = false; // turn to true to break out
+
+	while(!finish) {
+		input = getch();
+
+		switch(input) {
+			case 'q':
+				finish = true;
+				break;
+
+			case KEY_UP:
+				hover_move(w_main, hover_index-1);
+				wrefresh(w_main);
+				break;
+
+			case KEY_DOWN:
+				hover_move(w_main, hover_index+1);
+				wrefresh(w_main);
+				break;
+		}
+	}
+}