447 lines
16 KiB
C
447 lines
16 KiB
C
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/* desktop_app_linux.h — Deshab 应用 Linux 预览后端 (SDL2)
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*
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* 允许在 Linux 开发机上预览 Deshab-OS 应用的 UI 效果。
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* 使用方法：
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* 1. #
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define DA_LINUX_PREVIEW 1 * 2. #include "desktop_app_linux.h"
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* 3. 实现 dsk_entry() 函数（与 Deshab-OS 版本相同）
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* 4. 编译：make -f Makefile.linux
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*
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* 编译后会在 X11/Wayland 窗口中显示应用 UI，可用于调试布局和渲染。
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*/
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#ifndef DESHAB_DESKTOP_APP_LINUX_H
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#define DESHAB_DESKTOP_APP_LINUX_H
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#include <SDL2/SDL.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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#include <stdint.h>
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/* ===================================================================
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* 基础类型（与 desktop_app.h 一致）
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* =================================================================== */
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef uint64_t u64;
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typedef int64_t i64;
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/* ===================================================================
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* 颜色常量（与 desktop_app.h 一致）
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* =================================================================== */
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#define DA_BG_PRIMARY 0xFF0A1428u
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#define DA_BG_SECONDARY 0xFF0F1E38u
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#define DA_BG_TERTIARY 0xFF162848u
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#define DA_TEXT_PRIMARY 0xFFE8E8F0u
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#define DA_TEXT_DIM 0xFF6A6A88u
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#define DA_ACCENT 0xFF00A8CCu
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#define DA_ACCENT_LIGHT 0xFF44CCF0u
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#define DA_BORDER 0xFF284888u
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#define DA_BORDER_FOCUS 0xFF44CCF0u
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#define DA_CURSOR_COLOR 0xFF00A8CCu
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#define DA_SUCCESS 0xFF40C880u
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#define DA_ERROR 0xFFFF4466u
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#define DA_WARNING 0xFFF0A030u
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#define DA_TITLEBAR_H 28
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#define DA_BORDER_W 2
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#define DA_STATUSBAR_H 20
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/* ===================================================================
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* 渲染上下文（SDL2 版本）
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* =================================================================== */
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typedef struct {
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Uint32 *pixels; /* SDL2 像素缓冲 */
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int width;
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int height;
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int pitch; /* 行字节宽 */
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SDL_Window *window;
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SDL_Renderer *renderer;
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SDL_Texture *texture;
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} da_app_context;
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/* ===================================================================
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* ASCII 字体声明（需要从 ascii_bitmaps.c 包含）
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* =================================================================== */
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/* 如果外部未定义字体，则声明 extern */
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/* 在 notes_preview.c 中 include ascii_bitmaps.c 后会定义实际变量 */
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#ifndef DA_FONT_DEFINED
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extern const unsigned char *g_ascii[];
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extern int g_ascii_w;
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extern int g_ascii_h;
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#else
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/* 使用 extern 引用 ascii_bitmaps.c 中定义的 static 变量 */
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/* 注意：ascii_bitmaps.c 需要改为非 static */
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extern const unsigned char g_ascii[][11*18];
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extern int g_ascii_w;
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extern int g_ascii_h;
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#endif
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/* ===================================================================
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* 绘制原语（SDL2 实现）
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* =================================================================== */
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/* 颜色混合 */
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static inline Uint32 da_blend(Uint32 bg, Uint32 fg, Uint32 alpha) {
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Uint32 na = 256 - alpha;
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Uint32 r = ((bg & 0xFF) * na + (fg & 0xFF) * alpha) >> 8;
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Uint32 g = (((bg >> 8) & 0xFF) * na + ((fg >> 8) & 0xFF) * alpha) >> 8;
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Uint32 b = (((bg >> 16) & 0xFF) * na + ((fg >> 16) & 0xFF) * alpha) >> 8;
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return 0xFF000000u | (b << 16) | (g << 8) | r;
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}
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/* 像素写入（SDL2 锁定时） */
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static inline void da_pixel(da_app_context *ac, int x, int y, Uint32 color) {
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if (x < 0 || x >= ac->width || y < 0 || y >= ac->height) return;
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ac->pixels[y * ac->width + x] = color;
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}
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/* 矩形填充 */
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static inline void da_fill_rect(da_app_context *ac, int x, int y, int w, int h, Uint32 color) {
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for (int r = 0; r < h; r++) {
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for (int c = 0; c < w; c++) {
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int xx = x + c, yy = y + r;
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if (xx >= 0 && xx < ac->width && yy >= 0 && yy < ac->height) {
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ac->pixels[yy * ac->width + xx] = color;
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}
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}
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}
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}
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/* 全屏背景 */
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static inline void da_fill_bg(da_app_context *ac, Uint32 color) {
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memset(ac->pixels,0, (size_t)ac->width * ac->height *4);
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da_fill_rect(ac, 0, 0, ac->width, ac->height, color);
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}
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/* 圆角矩形（简化版） */
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static inline void da_fill_rounded_rect(da_app_context *ac, int x, int y , int w, int h,
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Uint32 color, int radius) {
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/* 中间区域 */
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da_fill_rect(ac, x + radius, y, w - 2 * radius, h, color);
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da_fill_rect(ac, x, y + radius, radius, h - 2 * radius, color);
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da_fill_rect(ac, x + w - radius, y + radius, radius, h - 2 * radius, color);
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/* 四个角（简化为填充） */
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for (int dy = 0; dy < radius; dy++) {
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for (int dx = 0; dx < radius; dx++) {
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if (dx * dx + dy * dy <= radius * radius) {
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da_pixel(ac, x + radius - 1 - dx, y + radius - 1 - dy, color);
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da_pixel(ac, x + w - radius + dx, y + radius - 1 - dy, color);
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da_pixel(ac, x + radius - 1 - dx, y + h - radius + dy, color);
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da_pixel(ac, x + w - radius + dx, y + h - radius + dy, color);
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}
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}
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}
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}
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/* 字符渲染 */
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static inline void da_draw_char(da_app_context *ac, char ch, int x, int y, Uint32 fg, Uint32 bg) {
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Uint32 idx = (Uint32)(ch - ' ');
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if (idx > 94) idx = 0;
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if (!g_ascii[idx]) return;
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const unsigned char *glyph = g_ascii[idx];
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int gw = g_ascii_w, gh = g_ascii_h;
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for (int r = 0; r < gh; r++) {
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for (int c = 0; c < gw; c++) {
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unsigned char a = glyph[r * gw + c];
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if (a == 0) continue;
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int xx = x + c, yy = y + r;
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if (xx < 0 || xx >= ac->width || yy < 0 || yy >= ac->height) continue;
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Uint32 pixel = (a == 255) ? fg : da_blend(bg, fg, a);
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ac->pixels[yy * ac->width + xx] = pixel;
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}
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}
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}
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/* 字符串渲染 */
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static inline void da_draw_string(da_app_context *ac, const char *s, int x, int y,
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Uint32 fg, Uint32 bg, int step) {
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int cx = x;
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while (*s) {
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da_draw_char(ac, *s, cx, y, fg, bg);
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cx += step;
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s ++;
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}
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}
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/*标题栏 */
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static inline void da_draw_titlebar(da_app_context *ac, const char *title, int w) {
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da_fill_rect(ac, 0, 0, w, DA_TITLEBAR_H, DA_BG_SECONDARY);
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da_draw_string(ac, title, 8, (DA_TITLEBAR_H - 18) / 2, DA_TEXT_PRIMARY, DA_BG_SECONDARY, 12);
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/* 关闭按钮 */
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da_fill_rounded_rect(ac, w - 28, 4, 24, 20, DA_ERROR, 4);
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da_draw_string(ac, "X", w - 20, 5, 0xFF0A1428u, DA_ERROR, 12);
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/* 底部分隔线 */
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da_fill_rect(ac, 0, DA_TITLEBAR_H, w, 1, DA_ACCENT);
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}
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/* 状态栏 */
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static inline void da_draw_statusbar(da_app_context *ac, const char *text, int w, int h) {
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int y = h - DA_STATUSBAR_H;
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da_fill_rect(ac, 0, y, w, DA_STATUSBAR_H, DA_BG_SECONDARY);
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da_draw_string(ac, text, 4, y + 1, DA_TEXT_DIM, DA_BG_SECONDARY, 12);
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da_fill_rect(ac, 0, y, w, 1, DA_BORDER);
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}
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/* ===================================================================
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* 上下文初始化/刷新
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* =================================================================== */
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static inline int da_init_linux(da_app_context *ac, const char *title, int width, int height) {
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if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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fprintf(stderr, "SDL2 init failed: %s\n", SDL_GetError());
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return -1;
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}
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ac->window = SDL_CreateWindow(title,
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SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
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width, height,
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SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
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if (!ac->window) {
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fprintf(stderr, "SDL_CreateWindow failed: %s\n", SDL_GetError());
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return -1;
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}
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ac->renderer = SDL_CreateRenderer(ac->window, -1, SDL_RENDERER_ACCELERATED);
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if (!ac->renderer) {
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fprintf(stderr, "SDL_CreateRenderer failed: %s\n", SDL_GetError());
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return -1;
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}
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ac->texture = SDL_CreateTexture(ac->renderer, SDL_PIXELFORMAT_ARGB8888,
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SDL_TEXTUREACCESS_STREAMING,
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width, height);
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if (!ac->texture) {
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fprintf(stderr, "SDL_CreateTexture failed: %s\n", SDL_GetError());
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return -1;
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}
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ac->width = width;
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ac->height = height;
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ac->pitch = width * 4;
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ac->pixels = (Uint32 *)malloc((size_t)width * height * 4);
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if (!ac->pixels) {
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fprintf(stderr, "malloc failed\n");
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return -1;
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} memset(ac->pixels, 0, (size_t)width * height * 4);
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return 0;
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}
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/* 刷新帧缓冲到屏幕 */
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static inline void da_flush(da_app_context *ac) {
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SDL_UpdateTexture(ac->texture, NULL, ac->pixels, ac->pitch);
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SDL_RenderClear(ac->renderer);
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SDL_RenderCopy(ac->renderer, ac->texture, NULL, NULL);
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SDL_RenderPresent(ac->renderer);
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}
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/* 清理资源 */
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static inline void da_cleanup(da_app_context *ac) {
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free(ac->pixels);
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if (ac->texture) SDL_DestroyTexture(ac->texture);
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if (ac->renderer) SDL_DestroyRenderer(ac->renderer);
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if (ac->window) SDL_DestroyWindow(ac->window);
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SDL_Quit();
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}
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/* 事件循环（等待关闭窗口） */
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static inline void da_event_loop(void) {
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SDL_Event event;
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int running = 1;
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while (running) {
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while (SDL_PollEvent(&event)) {
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if (event.type == SDL_QUIT) running = 0;
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if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_ESCAPE) running = 0;
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}
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SDL_Delay(16); /* ~60 FPS */
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}
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}
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/* ===================================================================
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* 鼠标光标（简化版）
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* =================================================================== */
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#define DA_CURSOR_SIZE 24
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static const unsigned char da_cursor_shape[24][24] = {
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{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,1,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{1,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
|
||
|
|
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
|
||
|
|
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
|
||
|
|
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int mx, my;
|
||
|
|
int btn;
|
||
|
|
} da_cursor;
|
||
|
|
|
||
|
|
static inline void da_cursor_init(da_cursor *c, int fb_w, int fb_h) {
|
||
|
|
c->mx = fb_w / 2;
|
||
|
|
c->my = fb_h / 2;
|
||
|
|
c->btn = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void da_cursor_draw(da_app_context *ac, da_cursor *c, Uint32 color) {
|
||
|
|
for (int r = 0; r < DA_CURSOR_SIZE; r++) {
|
||
|
|
for (int col = 0; col < DA_CURSOR_SIZE; col++) {
|
||
|
|
if (da_cursor_shape[r][col]) {
|
||
|
|
int x = c->mx + col, y = c->my + r;
|
||
|
|
if (x >= 0 && x < ac->width && y >= 0 && y < ac->height) {
|
||
|
|
ac->pixels[y * ac->width + x] = color;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ===================================================================
|
||
|
|
* PS/2 鼠标模拟（SDL2 事件转换）
|
||
|
|
* =================================================================== */
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int has_packet;
|
||
|
|
int dx, dy;
|
||
|
|
int buttons;
|
||
|
|
} da_mouse;
|
||
|
|
|
||
|
|
static inline void da_mouse_init(da_mouse *m) {
|
||
|
|
memset(m, 0, sizeof(*m));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 将 SDL 鼠标事件转换为内部状态 */
|
||
|
|
static inline void da_mouse_update(da_mouse *m, SDL_Event *event) {
|
||
|
|
if (event->type == SDL_MOUSEMOTION) {
|
||
|
|
m->dx += event->motion.xrel;
|
||
|
|
m->dy += event->motion.yrel;
|
||
|
|
m->has_packet = 1;
|
||
|
|
}
|
||
|
|
if (event->type == SDL_MOUSEBUTTONDOWN) {
|
||
|
|
m->buttons |= (1 << (event->button.button -1));
|
||
|
|
m->has_packet = 1;
|
||
|
|
}
|
||
|
|
if (event->type == SDL_MOUSEBUTTONUP) {
|
||
|
|
m->buttons &= ~(1 << (event->button.button - 1));
|
||
|
|
m->has_packet = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ===================================================================
|
||
|
|
* PS/2 键盘模拟（SDL2 事件转换）
|
||
|
|
* =================================================================== */
|
||
|
|
|
||
|
|
/* SDL scancode 到 Deshab PS/2 scan code 映射 */
|
||
|
|
static inline u8 da_sdl_to_ps2_scan(Uint32 sdl_scancode) {
|
||
|
|
/* 简化映射：只支持基本字母数字键 */
|
||
|
|
switch (sdl_scancode) {
|
||
|
|
case SDLK_ESCAPE: return 0x01;
|
||
|
|
case SDLK_1: return 0x02;
|
||
|
|
case SDLK_2: return 0x03;
|
||
|
|
case SDLK_3: return 0x04;
|
||
|
|
case SDLK_4: return 0x05;
|
||
|
|
case SDLK_5: return 0x06;
|
||
|
|
case SDLK_6: return 0x07;
|
||
|
|
case SDLK_7: return 0x08;
|
||
|
|
case SDLK_8: return 0x09;
|
||
|
|
case SDLK_9: return 0x0A;
|
||
|
|
case SDLK_0: return 0x0B;
|
||
|
|
case SDLK_MINUS: return 0x0C;
|
||
|
|
case SDLK_EQUALS: return 0x0D;
|
||
|
|
case SDLK_BACKSPACE: return 0x0E;
|
||
|
|
case SDLK_TAB: return 0x0F;
|
||
|
|
case SDLK_q: return 0x10;
|
||
|
|
case SDLK_w: return 0x11;
|
||
|
|
case SDLK_e: return 0x12;
|
||
|
|
case SDLK_r: return 0x13;
|
||
|
|
case SDLK_t: return 0x14;
|
||
|
|
case SDLK_y: return 0x15;
|
||
|
|
case SDLK_u: return 0x16;
|
||
|
|
case SDLK_i: return 0x17;
|
||
|
|
case SDLK_o: return 0x18;
|
||
|
|
case SDLK_p: return 0x19;
|
||
|
|
case SDLK_LEFTBRACKET: return 0x1A;
|
||
|
|
case SDLK_RIGHTBRACKET: return 0x1B;
|
||
|
|
case SDLK_RETURN: return 0x1C;
|
||
|
|
case SDLK_a: return 0x1E;
|
||
|
|
case SDLK_s: return 0x1F;
|
||
|
|
case SDLK_d: return 0x20;
|
||
|
|
case SDLK_f: return 0x21;
|
||
|
|
case SDLK_g: return 0x22;
|
||
|
|
case SDLK_h: return 0x23;
|
||
|
|
case SDLK_j: return 0x24;
|
||
|
|
case SDLK_k: return 0x25;
|
||
|
|
case SDLK_l: return 0x26;
|
||
|
|
case SDLK_SEMICOLON: return 0x27;
|
||
|
|
case SDLK_QUOTE: return 0x28;
|
||
|
|
case SDLK_BACKQUOTE: return 0x29;
|
||
|
|
case SDLK_BACKSLASH: return 0x2B;
|
||
|
|
case SDLK_z: return 0x2C;
|
||
|
|
case SDLK_x: return 0x2D;
|
||
|
|
case SDLK_c: return 0x2E;
|
||
|
|
case SDLK_v: return 0x2F;
|
||
|
|
case SDLK_b: return 0x30;
|
||
|
|
case SDLK_n: return 0x31;
|
||
|
|
case SDLK_m: return 0x32;
|
||
|
|
case SDLK_COMMA: return 0x33;
|
||
|
|
case SDLK_PERIOD: return 0x34;
|
||
|
|
case SDLK_SLASH: return 0x35;
|
||
|
|
case SDLK_RSHIFT:
|
||
|
|
case SDLK_LSHIFT: return 0; /* Shift 处理 */
|
||
|
|
case SDLK_SPACE: return 0x39;
|
||
|
|
case SDLK_LEFT: return 0x4B;
|
||
|
|
case SDLK_RIGHT: return 0x4D;
|
||
|
|
case SDLK_UP: return 0x48;
|
||
|
|
case SDLK_DOWN: return 0x50;
|
||
|
|
default: return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline char da_scan_to_ascii(u8 sc, int shift) {
|
||
|
|
static const char normal[58] = {
|
||
|
|
0, 27, '1','2','3','4','5','6','7','8','9','0','-','=', 8, '\t',
|
||
|
|
'q','w','e','r','t','y','u','i','o','p','[',']','\n',0,
|
||
|
|
'a','s','d','f','g','h','j','k','l',';','\'', '`',0,'\\',
|
||
|
|
'z','x','c','v','b','n','m',',','.','/',0,'*',0,' '
|
||
|
|
};
|
||
|
|
static const char shifted[58] = {
|
||
|
|
0, 27, '!','@','#','$','%','^','&','*','(',')','_','+', 8, '\t',
|
||
|
|
'Q','W','E','R','T','Y','U','I','O','P','{','}','\n',0,
|
||
|
|
'A','S','D','F','G','H','J','K','L',':','"','~',0,'|',
|
||
|
|
'Z','X','C','V','B','N','M','<','>','?',0,'*',0,' '
|
||
|
|
};
|
||
|
|
if (sc >= 58) return 0;
|
||
|
|
return shift ? shifted[sc] : normal[sc];
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* DESHAB_DESKTOP_APP_LINUX_H */
|