ra8_widget_label.c

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#include "ra8_check.h"
#include "ra8_widget.h"
#include "ra8_widget_internal.h"

static const char* s_tag = "ra8_widget_label";

typedef enum : int16_t {
  k_ra8_widget_label_no_border = 0, 
} ra8_widget_label_geom_t;

RA8_INTERNAL
static void internal_label_render(ra8_widget_t* w)
{
  ra8_widget_label_t* l = (ra8_widget_label_t*)w->ctx;
  if (l == nullptr) {
    return;
  }
  if (l->paint == nullptr) {
    return;
  }
  priv_widget_fill_box(l->paint, &w->rect, l->bg, l->bg, (int16_t)k_ra8_widget_label_no_border);
  if (l->text == nullptr) {
    return;
  }
  if (l->paint->draw_text == nullptr) {
    return;
  }
  int32_t tx = 0;
  int32_t ty = 0;
  priv_widget_text_pos(l->paint, &w->rect, l->text, l->pad, l->align, &tx, &ty);
  l->paint->draw_text(l->paint->user, tx, ty, l->text, l->fg, l->bg);
}

static const ra8_widget_vtable_t s_label_vt = {
  .measure  = nullptr,
  .render   = internal_label_render,
  .on_input = nullptr,
};
 
const ra8_widget_vtable_t* ra8_widget_label_vtable(void)
{
  return &s_label_vt;
}
 
[[nodiscard]] ra8_err_t ra8_widget_label_init(ra8_widget_t* w, ra8_widget_label_t* label)
{
  RA8_CHECK_NULL_PTR(w, s_tag, "w must not be nullptr");
  RA8_CHECK_NULL_PTR(label, s_tag, "label must not be nullptr");
  w->vt      = ra8_widget_label_vtable();
  w->ctx     = label;
  w->visible = true;
  return k_ra8_ok;
}