88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
package main
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"fyne.io/fyne/v2"
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)
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const (
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DefaultWindowWidth = 800.0
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DefaultWindowHeight = 600.0
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ConfigFileName = "secure-editor-go-config.json"
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)
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// windowConfig is persisted to ~/.cache/secure-editor-go-config.json so the
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// editor remembers its window size across runs.
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type windowConfig struct {
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Width float32 `json:"width"`
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Height float32 `json:"height"`
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}
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func configPath() (string, error) {
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home, err := os.UserHomeDir()
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if err != nil {
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return "", err
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}
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return filepath.Join(home, ".cache", ConfigFileName), nil
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}
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func defaultConfig() windowConfig {
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return windowConfig{Width: DefaultWindowWidth, Height: DefaultWindowHeight}
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}
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func loadConfig() windowConfig {
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p, err := configPath()
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if err != nil {
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return defaultConfig()
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}
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data, err := os.ReadFile(p)
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if err != nil {
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return defaultConfig()
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}
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var c windowConfig
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if err := json.Unmarshal(data, &c); err != nil {
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return defaultConfig()
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}
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if c.Width <= 0 || c.Height <= 0 {
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return defaultConfig()
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}
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return c
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}
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func saveConfig(size fyne.Size) {
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p, err := configPath()
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if err != nil {
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return
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}
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if err := os.MkdirAll(filepath.Dir(p), 0755); err != nil {
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return
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}
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c := windowConfig{Width: size.Width, Height: size.Height}
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data, err := json.MarshalIndent(c, "", " ")
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if err != nil {
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return
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}
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_ = os.WriteFile(p, data, 0644)
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}
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// clampToScreen shrinks size so it never exceeds the visible desktop area.
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// When the desktop size can't be determined it returns size unchanged.
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func clampToScreen(size fyne.Size) fyne.Size {
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sw, sh := desktopSize()
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if sw <= 0 || sh <= 0 {
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return size
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}
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w, h := size.Width, size.Height
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if w > sw {
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w = sw
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}
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if h > sh {
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h = sh
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}
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return fyne.NewSize(w, h)
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}
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