1 files changed, 96 insertions, 4 deletions

diff --git a/interface.c b/interface.c
index 26aca55..1347ce2 100644
--- a/interface.c
+++ b/interface.c
@@ -1,16 +1,108 @@
+#include <stdlib.h>
 #include <stdio.h>
+#include <locale.h>
 #include <unistd.h>
 
 #include "interface.h"
 #include "mutex.h"
 
+#define TB_IMPL
+#include "termbox2.h"
+
+static int block_width = 14;
+static int block_height = 4;
+
+void draw_block(int x, int y, const char *label, int empty) {
+
+        tb_set_cell(x, y, 0x250C, TB_WHITE, TB_DEFAULT);
+    tb_set_cell(x+block_width-1, y, 0x2510, TB_WHITE, TB_DEFAULT);
+    tb_set_cell(x, y+block_height-1, 0x2514, TB_WHITE, TB_DEFAULT);
+    tb_set_cell(x+block_width-1, y+block_height-1, 0x2518, TB_WHITE, TB_DEFAULT);
+        
+        tb_printf(x+(block_width/2) - (strlen(label)/2), y+(block_height/2)-1 ,TB_YELLOW, 0, label);
+        tb_printf(x+(block_width/2) - (strlen("empty")/2), y+(block_height/2) ,TB_DIM, 0, "empty");
+        
+        tb_present();
+}
+
+void draw_blocks() {
+        int offset_x = 0;
+        int offset_y = 6;
+        char col_names[6] = {'A', 'B', 'C', 'D', 'E', 'F'};
+
+        for (int r = 0; r < 4; r++) {
+                for (int c = 0; c < 6; c++) {
+                        char label[3];
+            label[0] = col_names[c];
+            label[1] = '1' + r;
+            label[2] = '\0';
+                        draw_block(offset_x+(block_width*c), offset_y+(block_height*r), label, 0);
+                }
+        }
+}
+
+void draw_help_tooltip(const char* tooltip_text) {
+        tb_printf(tb_width() - strlen(tooltip_text) - 1, tb_height()-1, TB_DIM, 0, tooltip_text);
+        tb_present();
+}
+
 void *interface(void *arg) {
         InterfaceArgs* args = (InterfaceArgs*)arg;
-        (void)args;
+
+        int ret;
+        setlocale(LC_ALL, "");
+
+        ret = tb_init();
+        if (ret) {
+                fprintf(stderr, "tb_init() failed with error code %d\n", ret);
+                exit(1);
+        }
+
+        tb_set_input_mode(TB_INPUT_ESC | TB_INPUT_MOUSE);
+        struct tb_event ev;
+
+        tb_clear();
+        tb_present();
+
+        // Show currently selected soundfont.
+        tb_printf(0, 0, TB_GREEN, 0, "Soundfont: %s", args->soundfont_file);
+        tb_printf(0, 1, TB_GREEN, 0, "Preset: %s", args->soundfont_preset);
+        tb_present();
+
+        // Draw interface.
+        draw_help_tooltip("Ctrl+q - Quit");
+        draw_blocks();
+        /* draw_block(10, 10, "A1"); */
 
         while(1) {
-                // Do the thread stuff here.
-                sleep(1);
-                fprintf(stdout, "hi from interface thread\n");
+                ret = tb_poll_event(&ev);
+
+                if (ret != TB_OK) {
+                        if (ret == TB_ERR_POLL && tb_last_errno() == EINTR) {
+                                /* Poll was interrupted, maybe by a SIGWINCH; try again */
+                                continue;
+                        }
+                        /* Some other error occurred; bail */
+                        break;
+                }
+
+                switch (ev.type) {
+                        case TB_EVENT_KEY: 
+                                if (ev.key == TB_KEY_CTRL_Q) {
+                                        tb_shutdown();
+                                        exit(0);
+                                }
+
+                                if (ev.key == TB_KEY_ARROW_UP) {
+
+                                }
+
+                                if (ev.key == TB_KEY_ARROW_DOWN) {
+
+                                }
+
+                                break;
+                }       
         }
 }
+