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#ifndef _BM_CAIRO_H_
#define _BM_CAIRO_H_
#include "internal.h"
#include <string.h>
#include <assert.h>
#include <cairo/cairo.h>
struct cairo {
cairo_t *cr;
cairo_surface_t *surface;
};
struct cairo_color {
float r, g, b, a;
};
struct cairo_font {
const char *name;
uint32_t size;
};
struct cairo_paint {
struct cairo_color color;
struct cairo_font font;
};
struct cairo_result {
cairo_text_extents_t te;
};
__attribute__((unused)) BM_LOG_ATTR(6, 7) static bool
bm_cairo_draw_line(struct cairo *cairo, struct cairo_paint *paint, struct cairo_result *result, int32_t x, int32_t y, const char *fmt, ...)
{
static size_t blen = 0;
static char *buffer = NULL;
assert(cairo && paint && result && fmt);
memset(result, 0, sizeof(struct cairo_result));
va_list args;
va_start(args, fmt);
bool ret = bm_vrprintf(&buffer, &blen, fmt, args);
va_end(args);
if (!ret)
return false;
cairo_set_source_rgba(cairo->cr, paint->color.r, paint->color.b, paint->color.g, paint->color.a);
cairo_text_extents_t te;
cairo_select_font_face(cairo->cr, paint->font.name, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size(cairo->cr, paint->font.size);
cairo_text_extents(cairo->cr, buffer, &te);
cairo_move_to(cairo->cr, x, y * te.height + te.height);
cairo_show_text(cairo->cr, buffer);
memcpy(&result->te, &te, sizeof(te));
return true;
}
__attribute__((unused)) static void
bm_cairo_paint(struct cairo *cairo, uint32_t width, uint32_t height, const struct bm_menu *menu)
{
cairo_set_source_rgb(cairo->cr, 18.0f / 255.0f, 18 / 255.0f, 18.0f / 255.0f);
cairo_rectangle(cairo->cr, 0, 0, width, height);
cairo_fill(cairo->cr);
struct cairo_result result;
memset(&result, 0, sizeof(result));
struct cairo_paint paint;
memset(&paint, 0, sizeof(paint));
paint.font.name = "Terminus";
paint.font.size = 12;
paint.color = (struct cairo_color){ 1.0, 0.0, 0.0, 1.0 };
if (menu->title)
bm_cairo_draw_line(cairo, &paint, &result, result.te.x_advance, 0, "%s ", menu->title);
if (menu->filter)
bm_cairo_draw_line(cairo, &paint, &result, result.te.x_advance, 0, "%s", menu->filter);
uint32_t count, cl = 1;
uint32_t lines = height / paint.font.size;
struct bm_item **items = bm_menu_get_filtered_items(menu, &count);
for (uint32_t i = (menu->index / (lines - 1)) * (lines - 1); i < count && cl < lines; ++i) {
bool highlighted = (items[i] == bm_menu_get_highlighted_item(menu));
if (highlighted)
paint.color = (struct cairo_color){ 1.0, 0.0, 0.0, 1.0 };
else if (bm_menu_item_is_selected(menu, items[i]))
paint.color = (struct cairo_color){ 1.0, 0.0, 0.0, 1.0 };
else
paint.color = (struct cairo_color){ 1.0, 1.0, 1.0, 1.0 };
bm_cairo_draw_line(cairo, &paint, &result, 0, cl++, "%s%s", (highlighted ? ">> " : " "), (items[i]->text ? items[i]->text : ""));
}
}
#endif /* _BM_CAIRO_H */
/* vim: set ts=8 sw=4 tw=0 :*/
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