first commit

internal/ui/styles.go

@@ -0,0 +1,41 @@
+package ui
+
+import (
+	"image/color"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/theme"
+)
+
+// lookupColor 从当前主题取色。
+func lookupColor(name fyne.ThemeColorName) color.Color {
+	if app := fyne.CurrentApp(); app != nil {
+		s := app.Settings()
+		return s.Theme().Color(name, s.ThemeVariant())
+	}
+	return theme.DefaultTheme().Color(name, theme.VariantDark)
+}
+
+// withAlpha 调整颜色透明度。
+func withAlpha(c color.Color, a uint8) color.Color {
+	n := color.NRGBAModel.Convert(c).(color.NRGBA)
+	n.A = a
+	return n
+}
+
+// 界面配色集中在这里，方便统一调整。
+func colorUserBubble() color.Color {
+	return withAlpha(lookupColor(theme.ColorNamePrimary), 0x3A)
+}
+
+func colorBotBubble() color.Color {
+	return withAlpha(lookupColor(theme.ColorNameInputBackground), 0xF2)
+}
+
+func colorErrBubble() color.Color {
+	return withAlpha(lookupColor(theme.ColorNameError), 0x28)
+}
+
+func colorBorder() color.Color {
+	return withAlpha(lookupColor(theme.ColorNameInputBorder), 0xB0)
+}