refactoring; modal window init

src/ui/widget/button.h

@@ -0,0 +1,15 @@
+#ifndef BUTTON_H
+#define BUTTON_H
+
+#include "../../main.h"
+#include "../widget.h"
+#include <stdint.h>
+
+typedef struct {
+  widget_t widget;
+  char value;
+  uint32_t is_focused : 1;
+  uint32_t is_disabled : 1;
+} button_t;
+
+#endif

src/ui/widget/dialogue.c

@@ -0,0 +1,49 @@
+#include "dialogue.h"
+#include "../app.h"
+#include <ncurses.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+dialogue_t *init_dialogue(char title[]) {
+  dialogue_t *dialogue = malloc(sizeof(dialogue_t));
+  dialogue->win = 0;
+  dialogue->buttons = NULL;
+  strcpy(dialogue->w.title, title);
+  return dialogue;
+}
+
+int32_t draw_dialogue(dialogue_t *d, uint32_t cur_x, uint32_t cur_y) {
+  d->w.x = 50;
+  d->w.y = 20;
+  d->w.m_x = (cur_x - d->w.x) / 2;
+  d->w.m_y = (cur_y - d->w.y) / 2;
+
+  d->win = newwin(d->w.y, d->w.x, d->w.m_y, d->w.m_x);
+  
+  wcolor_set(d->win, MODAL_COLOR_PAIR, NULL);
+  wattrset(d->win, A_REVERSE);
+
+  for (int xp = 1; xp < d->w.x; xp++) {
+    for (int yp = 1; yp < d->w.y - 1; yp++) {
+      mvwprintw(d->win, yp, xp, " ");
+    }
+  }
+
+  uint32_t title_mx_pos = (d->w.x - strlen(d->w.title)) / 2;
+  
+  box(d->win, 0, 0);
+  mvwprintw(d->win, 0, title_mx_pos-1, " ");
+  mvwprintw(d->win, 0, title_mx_pos, d->w.title);
+  mvwprintw(d->win, 0, title_mx_pos + strlen(d->w.title), " ");
+  wattroff(d->win, A_REVERSE);
+  wrefresh(d->win);
+
+  return 0;
+};
+
+void destroy_active_dialogue(dialogue_t *d) {
+  delwin(d->win);
+  free(d->win);
+  d->win = NULL;
+}

src/ui/widget/dialogue.h

@@ -0,0 +1,18 @@
+#ifndef DIALOGUE_H
+#define DIALOGUE_H
+
+#include <ncurses.h>
+#include "../widget.h"
+#include "button.h"
+
+typedef struct {
+  WINDOW *win;
+  widget_t w;
+  button_t *buttons; // ! should be NULL-terminated
+} dialogue_t;
+
+dialogue_t *init_dialogue(char title[]);
+int32_t draw_dialogue(dialogue_t *d, uint32_t cur_x, uint32_t cur_y);
+void destroy_active_dialogue(dialogue_t *d);
+
+#endif