92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
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//go:build windows
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// +build windows
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package main
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import (
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"log"
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"fyne.io/fyne/v2"
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"golang.org/x/sys/windows/registry"
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)
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// GetRegistryColorValue retrieves a DWORD value from the Windows registry.
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func GetRegistryColorValue(keyPath, valueName string) (uint32, error) {
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key, err := registry.OpenKey(registry.CURRENT_USER, keyPath, registry.QUERY_VALUE)
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if err != nil {
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return 0, err
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}
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defer key.Close()
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value, _, err := key.GetIntegerValue(valueName)
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if err != nil {
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return 0, err
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}
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return uint32(value), nil
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}
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// ParseRegistryColorValue converts a DWORD value to RGB format.
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func ParseRegistryColorValue(value uint32) (uint8, uint8, uint8) {
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return uint8(value & 0xFF), uint8((value >> 8) & 0xFF), uint8((value >> 16) & 0xFF)
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}
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// GetDarkMode checks if dark mode is enabled.
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func GetDarkMode() (bool, error) {
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const keyPath = `Software\Microsoft\Windows\CurrentVersion\Themes\Personalize`
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const valueName = "AppsUseLightTheme"
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darkModeValue, err := GetRegistryColorValue(keyPath, valueName)
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if err != nil {
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return false, err
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}
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isDark := darkModeValue == 0
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return isDark, nil
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}
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// GetThemeWin retrieves the background and theme colors from the registry.
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func GetThemeWin() (colBackground, colTheme [3]uint8, isDark bool, err error) {
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registryEntries := []struct {
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keyPath string
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valueName string
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}{
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{`Software\Microsoft\Windows\CurrentVersion\Explorer\Accent`, "AccentColorMenu"},
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{`Software\Microsoft\Windows\DWM`, "AccentColor"},
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}
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isDark, err = GetDarkMode()
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if err != nil {
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return
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}
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blackRGB := [3]uint8{10, 10, 10}
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whiteRGB := [3]uint8{245, 245, 245}
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if isDark {
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colBackground = blackRGB
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} else {
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colBackground = whiteRGB
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}
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for _, entry := range registryEntries {
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registryValue, err := GetRegistryColorValue(entry.keyPath, entry.valueName)
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if err == nil {
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r, g, b := ParseRegistryColorValue(registryValue)
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if entry.valueName == "AccentColorMenu" || entry.valueName == "AccentColor" {
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colTheme = [3]uint8{r, g, b}
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}
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}
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}
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return
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}
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func ApplyTheme(a fyne.App) {
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colBackground, colTheme, isDark, err := GetThemeWin()
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if err != nil {
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log.Fatalf("Error: %v\n", err)
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}
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applyThemeToApp(a, colBackground, colTheme, isDark)
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}
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