ra8_widget_progress_bar.c

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#include "ra8_widget_progress_bar.h"
 
#include "ra8_check.h"
#include "ra8_widget.h"
#include "ra8_widget_internal.h"

static const char* s_tag = "ra8_widget_progress_bar";

typedef enum : int32_t {
  k_ra8_widget_pb_empty = 0, 
} ra8_widget_pb_geom_t;

RA8_INTERNAL
static void internal_pb_render(ra8_widget_t* w)
{
  ra8_widget_progress_bar_t* pb = (ra8_widget_progress_bar_t*)w->ctx;
  if (pb == nullptr) {
    return;
  }
  if (pb->paint == nullptr) {
    return;
  }
  if (pb->paint->fill_rect == nullptr) {
    return;
  }
  const ra8_ui_rect_t* r = &w->rect;
  pb->paint->fill_rect(pb->paint->user, r->x, r->y, r->w, r->h, pb->track);
  const int32_t fw = priv_widget_fill_frac(pb->value, pb->total, r->w);
  if (fw > (int32_t)k_ra8_widget_pb_empty) {
    pb->paint->fill_rect(pb->paint->user, r->x, r->y, fw, r->h, pb->fill);
  }
}

static const ra8_widget_vtable_t s_pb_vt = {
  .measure  = nullptr,
  .render   = internal_pb_render,
  .on_input = nullptr,
};
 
const ra8_widget_vtable_t* ra8_widget_progress_bar_vtable(void)
{
  return &s_pb_vt;
}
 
[[nodiscard]] ra8_err_t ra8_widget_progress_bar_init(ra8_widget_t*              w,
                                                     ra8_widget_progress_bar_t* bar)
{
  RA8_CHECK_NULL_PTR(w, s_tag, "w must not be nullptr");
  RA8_CHECK_NULL_PTR(bar, s_tag, "bar must not be nullptr");
  w->vt      = ra8_widget_progress_bar_vtable();
  w->ctx     = bar;
  w->visible = true;
  return k_ra8_ok;
}