mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-30 15:23:01 +08:00
131 lines
3.6 KiB
Go
131 lines
3.6 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !js || !wasm
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package webview
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"github.com/xiaoqidun/guigo"
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webuiassets "github.com/xiaoqidun/ofdgo/assets/webui"
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)
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// applicationTheme 保存应用主题偏好及最后一次解析的系统外观
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type applicationTheme struct {
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Mode string `json:"mode"`
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Dark bool `json:"dark"`
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}
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// themeColors 返回应用对应外观的原生标题栏配色
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// 入参: dark 是否使用深色
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// 返回: guigo.TitleBarColors 标题栏配色
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func themeColors(dark bool) guigo.TitleBarColors {
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if dark {
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return guigo.TitleBarColors{Background: "#20272b", Foreground: "#e0e7eb", InactiveBackground: "#242b30", InactiveForeground: "#9aa8b1"}
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}
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return guigo.TitleBarColors{Background: "#e8edee", Foreground: "#263238", InactiveBackground: "#eef1f3", InactiveForeground: "#728087"}
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}
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// loadTheme 在创建窗口前读取用户目录中的主题偏好
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// 返回: error 读取或解析错误
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func (h *Host) loadTheme() error {
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h.theme = applicationTheme{Mode: "system"}
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data, err := os.ReadFile(h.themePath)
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if os.IsNotExist(err) {
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return nil
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}
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if err != nil {
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return err
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}
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if err := json.Unmarshal(data, &h.theme); err != nil {
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return err
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}
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return h.theme.validate()
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}
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// validate 检查应用主题及解析后的配色是否一致
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// 返回: error 偏好错误
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func (a applicationTheme) validate() error {
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if a.Mode != "system" && a.Mode != "light" && a.Mode != "dark" {
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return fmt.Errorf("主题无效")
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}
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if a.Mode == "light" && a.Dark || a.Mode == "dark" && !a.Dark {
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return fmt.Errorf("主题配色无效")
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}
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return nil
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}
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// themeIndex 在页面首次绘制前提供当前主题偏好
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// 返回: []byte 页面内容, error 资源读取错误
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func (h *Host) themeIndex() ([]byte, error) {
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data, err := webuiassets.NativeFS.ReadFile("index.html")
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if err != nil {
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return nil, err
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}
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h.themeMu.Lock()
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mode := h.theme.Mode
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h.themeMu.Unlock()
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if mode == "" {
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mode = "system"
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}
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return bytes.Replace(data, []byte(`<html lang="zh-CN">`), []byte(`<html lang="zh-CN" data-theme-mode="`+mode+`">`), 1), nil
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}
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// setTheme 串行保存应用偏好并同步当前窗口配色
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// 入参: value 已解析的主题偏好
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// 返回: error 校验、持久化或窗口更新错误
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func (h *Host) setTheme(value applicationTheme) error {
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if err := value.validate(); err != nil {
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return err
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}
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h.themeMu.Lock()
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defer h.themeMu.Unlock()
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h.mu.Lock()
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window := h.window
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h.mu.Unlock()
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if window == nil {
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return fmt.Errorf("窗口尚未就绪")
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}
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if h.theme != value {
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data, err := json.Marshal(value)
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if err != nil {
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return err
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}
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file, err := os.CreateTemp(filepath.Dir(h.themePath), "appearance-*")
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if err != nil {
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return err
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}
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defer os.Remove(file.Name())
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_, writeErr := file.Write(data)
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closeErr := file.Close()
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if writeErr != nil {
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return writeErr
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}
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if closeErr != nil {
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return closeErr
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}
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if err := os.Rename(file.Name(), h.themePath); err != nil {
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return err
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}
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h.theme = value
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}
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return window.SetTitleBarColors(themeColors(value.Dark))
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}
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