ra8_widget_status_bar.c

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#include "ra8_widget_status_bar.h"
 
#include "ra8_check.h"
#include "ra8_widget.h"
#include "ra8_widget_internal.h"

static const char* s_tag = "ra8_widget_status_bar";

typedef enum : int16_t {
  k_ra8_widget_sb_no_rule = 0, 
} ra8_widget_sb_geom_t;

RA8_INTERNAL
static void internal_sb_label(const ra8_widget_paint_t* paint,
                              const ra8_ui_rect_t*      rect,
                              const char*               text,
                              int16_t                   pad,
                              ra8_widget_align_t        align,
                              uint32_t                  fg,
                              uint32_t                  bg)
{
  if (text == nullptr) {
    return;
  }
  if (paint->draw_text == nullptr) {
    return;
  }
  int32_t tx = 0;
  int32_t ty = 0;
  priv_widget_text_pos(paint, rect, text, pad, align, &tx, &ty);
  paint->draw_text(paint->user, tx, ty, text, fg, bg);
}

RA8_INTERNAL
static void internal_sb_render(ra8_widget_t* w)
{
  ra8_widget_status_bar_t* sb = (ra8_widget_status_bar_t*)w->ctx;
  if (sb == nullptr) {
    return;
  }
  if (sb->paint == nullptr) {
    return;
  }
  const ra8_ui_rect_t* r = &w->rect;
  priv_widget_fill_box(sb->paint, r, sb->bg, sb->bg, (int16_t)k_ra8_widget_sb_no_rule);
  internal_sb_label(sb->paint, r, sb->left, sb->pad, k_ra8_widget_align_left, sb->fg, sb->bg);
  internal_sb_label(sb->paint,
                    r,
                    sb->right,
                    sb->pad,
                    k_ra8_widget_align_right,
                    sb->fg_right,
                    sb->bg);
  if (sb->rule_h <= (int16_t)k_ra8_widget_sb_no_rule) {
    return;
  }
  if (sb->paint->fill_rect == nullptr) {
    return;
  }
  sb->paint->fill_rect(sb->paint->user,
                       r->x,
                       (r->y + r->h) - (int32_t)sb->rule_h,
                       r->w,
                       (int32_t)sb->rule_h,
                       sb->rule);
}

static const ra8_widget_vtable_t s_sb_vt = {
  .measure  = nullptr,
  .render   = internal_sb_render,
  .on_input = nullptr,
};
 
const ra8_widget_vtable_t* ra8_widget_status_bar_vtable(void)
{
  return &s_sb_vt;
}
 
[[nodiscard]] ra8_err_t ra8_widget_status_bar_init(ra8_widget_t* w, ra8_widget_status_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_status_bar_vtable();
  w->ctx     = bar;
  w->visible = true;
  return k_ra8_ok;
}