MeowOS Dev
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124 lines
4.3 KiB
C
124 lines
4.3 KiB
C
/*
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* meow_font_demo.c — MeowOS 字体子系统主机/真机验证 demo。
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*
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* 用法：
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* host（主机侧验证）：meow_font_demo --sim demo.raw
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* 渲染中文串到内存 480x720 RGB565 缓冲并写入 demo.raw，主机再用 raw2png.py 转 PNG。
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* 真机：meow_font_demo --to-fb （写 /dev/fb0，默认走非显示后备缓冲并暂存，谨慎用 --sim）
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*
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* 通过 meow_font.h 的公开 API 绘制，验证字形/字号/advance/描边；把 width_text 打印到 stdout。
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*/
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#include "meow_font.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define FB_W 480
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#define FB_H 720
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static uint16_t *g_fb;
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static inline uint16_t rgb565(int r, int g, int b) {
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return (uint16_t)(((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3));
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}
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static void fill_bg(uint16_t c) {
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for (size_t i = 0; i < (size_t)FB_W * FB_H; i++) g_fb[i] = c;
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}
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static void fill_rect(int x, int y, int w, int h, uint16_t c) {
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for (int yy = y; yy < y + h; yy++) {
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for (int xx = x; xx < x + w; xx++) {
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if (xx >= 0 && xx < FB_W && yy >= 0 && yy < FB_H) g_fb[(size_t)yy * FB_W + xx] = c;
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}
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}
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}
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/* 设备侧写文件 */
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static int write_raw(const char *path) {
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FILE *f = fopen(path, "wb");
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if (!f) { fprintf(stderr, "cannot open %s\n", path); return -1; }
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size_t n = fwrite(g_fb, 2, (size_t)FB_W * FB_H, f);
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fclose(f);
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return (n == (size_t)FB_W * FB_H) ? 0 : -1;
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}
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int main(int argc, char **argv) {
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int to_fb = 0;
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const char *rawpath = "font/demo/meow_demo.raw";
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for (int i = 1; i < argc; i++) {
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if (!strcmp(argv[i], "--to-fb")) to_fb = 1;
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else if (!strcmp(argv[i], "--sim")) rawpath = (i + 1 < argc) ? argv[++i] : rawpath;
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else { fprintf(stderr, "usage: %s [--sim out.raw | --to-fb]\n", argv[0]); return 2; }
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}
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g_fb = (uint16_t *)calloc((size_t)FB_W * FB_H, 2);
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if (!g_fb) return 3;
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meow_font_set_fb(FB_W, FB_H, FB_W * 2);
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const char *png = "font/atlas/font.png";
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const char *idx = "font/atlas/font.idx";
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int rc = meow_font_load(png, idx);
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if (rc != 0) {
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fprintf(stderr, "meow_font_load failed rc=%d\n", rc);
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return 4;
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}
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printf("loaded %s + %s : has_size(28)=%d has_size(20)=%d\n",
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png, idx, meow_font_has_size(28), meow_font_has_size(20));
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/* ---- 度量核对 ---- */
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printf("width_text('MeowOS 主屏',28)=%d line_h28=%d asc28=%d\n",
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meow_font_width_text("MeowOS 主屏", 28), meow_font_line_height(28), meow_font_ascent(28));
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printf("width_text('返回播放器需重启',20)=%d line_h20=%d\n",
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meow_font_width_text("返回播放器需重启", 20), meow_font_line_height(20));
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/* ---- 布局 --- */
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uint16_t cbg = rgb565(0x0c, 0x0e, 0x12);
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uint16_t ctit = rgb565(0xff, 0xb0, 0x30); /* 主题橙 */
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uint16_t ctext = rgb565(0xf2, 0xf2, 0xf2); /* 近白 */
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uint16_t c_dim = rgb565(0x7a, 0x82, 0x8c); /* 灰 */
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uint16_t cselbg = rgb565(0x1e, 0x2a, 0x3a); /* 选中背景 */
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fill_bg(cbg);
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/* 顶栏：标题 + 状态(版本) */
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meow_font_drawtext(g_fb, 16, 10, "MeowOS 主屏", ctit, 28);
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meow_font_drawtext(g_fb, 400, 16, "0.6.9", c_dim, 20);
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/* 分隔线 */
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fill_rect(16, 56, FB_W - 32, 1, rgb565(0x2a, 0x30, 0x38));
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/* 应用/功能列表（正文 20px） */
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struct item { const char *s; int sel; } items[] = {
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{"本地音乐", 0}, {"在线电台", 0}, {"返回播放器需重启", 1},
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{"设置", 0}, {"关闭背光", 0}, {"关机", 0},
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};
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int y = 78;
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for (unsigned i = 0; i < sizeof(items) / sizeof(items[0]); i++) {
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int lh = meow_font_line_height(20);
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if (items[i].sel) {
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fill_rect(12, y - 4, FB_W - 24, lh + 6, cselbg);
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meow_font_drawtext_outline(g_fb, 24, y, items[i].s, ctext, ctit, 1, 20);
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} else {
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meow_font_drawtext(g_fb, 24, y, items[i].s, items[i].sel ? ctit : ctext, 20);
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}
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y += lh + 16;
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}
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/* 底栏提示 */
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meow_font_drawtext(g_fb, 16, FB_H - 46, "按住电源键 3 秒返回", c_dim, 20);
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if (to_fb) {
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fprintf(stderr, "--to-fb 暂未在本机关联（真机用）；先用 --sim 验证\n");
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}
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if (write_raw(rawpath) != 0) {
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fprintf(stderr, "write_raw failed\n");
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return 5;
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}
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printf("wrote %s\n", rawpath);
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meow_font_unload();
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free(g_fb);
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return 0;
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}
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