Initial commit

src/widget.c

@@ -0,0 +1,89 @@
+#include "mgos.h"
+#include "widget.h"
+
+struct widget_list_t {
+  struct widget_t *widget;
+  SLIST_ENTRY(widget_list_t) entries;
+};
+
+SLIST_HEAD(widget_list, widget_list_t) s_widgets;
+
+static void widget_event_timer(void *arg) {
+  struct widget_t *widget = (struct widget_t *) arg;
+  if (!widget)
+    return;
+  if (widget->handler)
+    widget->handler(EV_WIDGET_TIMER, widget, NULL);
+}
+
+static void widget_destroy(struct widget_t *widget) {
+  if (!widget)
+    return;
+  if (widget->handler)
+    widget->handler(EV_WIDGET_DESTROY, widget, NULL);
+
+  if (widget->timer_msec)
+    mgos_clear_timer(widget->_timer_id);
+  if (widget->user_data)
+    free(widget->user_data);
+  free(widget);
+}
+
+struct widget_t *widget_add(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint32_t timer_msec, widget_event_fn handler, void *user_data) {
+  struct widget_t *widget;
+  struct widget_list_t *wl;
+
+  widget = (struct widget_t *) calloc(1, sizeof(*widget));
+  if (!widget)
+    return NULL;
+  widget->x=x; 
+  widget->y=y; 
+  widget->w=w; 
+  widget->h=h; 
+  widget->timer_msec=timer_msec; 
+  widget->handler=handler;
+  widget->user_data=user_data;
+  if (timer_msec > 0)
+    widget->_timer_id = mgos_set_timer(timer_msec, MGOS_TIMER_REPEAT, widget_event_timer, widget);
+
+  wl = (struct widget_list_t *) calloc(1, sizeof(*wl));
+  if (!wl) {
+    widget_destroy(widget);
+    return NULL;
+  }
+  wl->widget = widget;
+  SLIST_INSERT_HEAD(&s_widgets, wl, entries);
+
+  if (handler)
+    handler(EV_WIDGET_CREATE, widget, NULL);
+  return widget;
+}
+
+struct widget_t *widget_find(uint16_t x, uint16_t y) {
+  struct widget_list_t *wl;
+
+  SLIST_FOREACH(wl, &s_widgets, entries) {
+    if (wl->widget->x < x &&
+        x < (wl->widget->x+wl->widget->w) &&
+        wl->widget->y < y &&
+        y < (wl->widget->y+wl->widget->h))
+      return wl->widget;
+  }
+  return NULL;
+}
+
+void widget_remove(struct widget_t *widget) {
+//  struct widget_list_t *wl, *wlt;
+
+  if (!widget)
+    return;
+
+/*
+  SLIST_FOREACH_SAFE(wl, &s_widgets, entries, wlt) {
+    if (wl->widget == widget) {
+      SLIST_REMOVE(&s_widgets, wl, widget_t, entries);
+      free(wl);
+    }
+  }
+*/
+}