43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
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/* hello-app - Deshab SDK 最小应用示例
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*
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* 展示完整的应用入口契约：校验 magic -> 初始化上下文 -> 绘制 UI -> 等待退出。
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* 构建产物：SYSTEM/system/deshab64/tools/hello.elf
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*/
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#include "../../../firstInit/ascii_bitmaps.c"
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#include "deshab/deshab.h"
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#include "deshab/font.h"
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static dsb_app_context g_ac;
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void dsk_entry(const dsk_boot_context *ctx) {
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/* 1. 校验启动上下文 magic */
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if (ctx->magic != DSK_BOOT_MAGIC) return;
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/* 2. 初始化应用上下文（framebuffer + block + kernel_api） */
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dsb_app_init(&g_ac, ctx);
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/* 3. 清屏 */
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dsb_fill_bg(&g_ac, DSB_BG_PRIMARY);
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/* 4. 标题栏 + 状态栏 */
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dsb_draw_titlebar(&g_ac, "HelloApp", (i64)g_ac.fb_w);
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dsb_draw_statusbar(&g_ac, "Esc to exit", (i64)g_ac.fb_w, (i64)g_ac.fb_h);
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/* 5. 居中显示欢迎文字 */
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const char *msg = "Hello, Deshab!";
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i64 msg_w = (i64)dsb_strlen(msg) * 12;
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i64 x = ((i64)g_ac.fb_w - msg_w) / 2;
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i64 y = ((i64)g_ac.fb_h) / 2;
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dsb_draw_string(&g_ac, msg, x, y, DSB_TEXT_PRIMARY, DSB_BG_PRIMARY, 12);
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/* 6. 等待 Esc 键退出 */
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for (;;) {
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u8 st = dsb_inb(0x64);
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if (st & 1) {
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u8 sc = dsb_inb(0x60);
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if (sc == 1) break; /* Esc make code */
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}
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__asm__ volatile("pause");
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}
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}
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