新增: 壁纸切换（主题/本地图片/Bing/纯色渐变）

2026-05-25 19:54:32 +08:00
parent a804db3579
commit bb1574641f
14 changed files with 868 additions and 395 deletions
--- a/wallpaper.go
+++ b/wallpaper.go
@@ -0,0 +1,113 @@
+package main
+
+import (
+	_ "embed"
+	"encoding/base64"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+//go:embed web/overlay.html
+var overlayHTML string
+
+//go:embed web/themes/aurora.html
+var themeAurora string
+
+//go:embed web/themes/starfield.html
+var themeStarfield string
+
+//go:embed web/themes/gradient.html
+var themeGradient string
+
+//go:embed web/themes/particles.html
+var themeParticles string
+
+var themeMap = map[ThemeName]string{
+	ThemeAurora:   themeAurora,
+	ThemeStar:     themeStarfield,
+	ThemeGradient: themeGradient,
+	ThemeParticle: themeParticles,
+}
+
+func buildWallpaperHTML(cfg *Config) string {
+	var bg string
+
+	switch cfg.WallpaperType {
+	case WPTheme:
+		if t, ok := themeMap[cfg.Theme]; ok {
+			bg = t
+		} else {
+			bg = themeAurora
+		}
+	case WPImage:
+		if cfg.ImagePath != "" {
+			src := imageToDataURI(cfg.ImagePath)
+			if src != "" {
+				bg = fmt.Sprintf(`<img src="%s" style="position:fixed;top:0;left:0;width:100%%;height:100%%;object-fit:cover;z-index:1;">`, src)
+			}
+		}
+	case WPBing:
+		bingPath := filepath.Join(configDir(), "bing_wallpaper.jpg")
+		if _, err := os.Stat(bingPath); err == nil {
+			src := imageToDataURI(bingPath)
+			if src != "" {
+				bg = fmt.Sprintf(`<img src="%s" style="position:fixed;top:0;left:0;width:100%%;height:100%%;object-fit:cover;z-index:1;">`, src)
+			}
+		}
+	case WPColor:
+		if cfg.ColorGradient && cfg.Color2 != "" {
+			bg = fmt.Sprintf(`<div style="position:fixed;top:0;left:0;width:100%%;height:100%%;z-index:1;background:linear-gradient(135deg,%s,%s);"></div>`, cfg.Color1, cfg.Color2)
+		} else {
+			bg = fmt.Sprintf(`<div style="position:fixed;top:0;left:0;width:100%%;height:100%%;z-index:1;background:%s;"></div>`, cfg.Color1)
+		}
+	}
+
+	if bg == "" {
+		bg = themeAurora
+	}
+	return strings.Replace(overlayHTML, "{{BACKGROUND}}", bg, 1)
+}
+
+func imageToDataURI(path string) string {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		log.Println("读取图片失败:", err)
+		return ""
+	}
+	ext := strings.ToLower(filepath.Ext(path))
+	mime := "image/jpeg"
+	switch ext {
+	case ".png":
+		mime = "image/png"
+	case ".gif":
+		mime = "image/gif"
+	case ".webp":
+		mime = "image/webp"
+	case ".bmp":
+		mime = "image/bmp"
+	}
+	return fmt.Sprintf("data:%s;base64,%s", mime, base64.StdEncoding.EncodeToString(data))
+}
+
+func reloadWallpaper() {
+	if wv == nil || wvHwnd == 0 {
+		return
+	}
+	cfg := loadConfig()
+	html := buildWallpaperHTML(cfg)
+	select {
+	case htmlQueue <- html:
+	default:
+	}
+	procPostMessageW.Call(wvHwnd, wmSetHtml, 0, 0)
+	go func() {
+		time.Sleep(1 * time.Second)
+		evalJS(fmt.Sprintf(`window.userZodiac = %q;`, cfg.Zodiac))
+		city := getCurrentCity()
+		go fetchAndPushWeather(city)
+	}()
+}