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options.go
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options.go
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package options
import (
"context"
"io/fs"
"log"
"net/http"
"runtime"
"github.com/wailsapp/wails/v2/pkg/options/linux"
"github.com/wailsapp/wails/v2/pkg/options/mac"
"github.com/wailsapp/wails/v2/pkg/options/windows"
"github.com/wailsapp/wails/v2/pkg/menu"
"github.com/imdario/mergo"
"github.com/wailsapp/wails/v2/pkg/logger"
)
type WindowStartState int
const (
Normal WindowStartState = 0
Maximised WindowStartState = 1
Minimised WindowStartState = 2
Fullscreen WindowStartState = 3
)
// App contains options for creating the App
type App struct {
Title string
Width int
Height int
DisableResize bool
Fullscreen bool
Frameless bool
MinWidth int
MinHeight int
MaxWidth int
MaxHeight int
StartHidden bool
HideWindowOnClose bool
AlwaysOnTop bool
BackgroundColour *RGBA
// RGBA is deprecated. Please use BackgroundColour
RGBA *RGBA
Assets fs.FS
AssetsHandler http.Handler
Menu *menu.Menu
Logger logger.Logger `json:"-"`
LogLevel logger.LogLevel
LogLevelProduction logger.LogLevel
OnStartup func(ctx context.Context) `json:"-"`
OnDomReady func(ctx context.Context) `json:"-"`
OnShutdown func(ctx context.Context) `json:"-"`
OnBeforeClose func(ctx context.Context) (prevent bool) `json:"-"`
Bind []interface{}
WindowStartState WindowStartState
//ContextMenus []*menu.ContextMenu
//TrayMenus []*menu.TrayMenu
Windows *windows.Options
Mac *mac.Options
Linux *linux.Options
}
type RGBA struct {
R uint8 `json:"r"`
G uint8 `json:"g"`
B uint8 `json:"b"`
A uint8 `json:"a"`
}
// MergeDefaults will set the minimum default values for an application
func MergeDefaults(appoptions *App) {
err := mergo.Merge(appoptions, Default)
if err != nil {
log.Fatal(err)
}
// Default colour. Doesn't work well with mergo
if appoptions.BackgroundColour == nil {
appoptions.BackgroundColour = &RGBA{
R: 255,
G: 255,
B: 255,
A: 255,
}
}
// Ensure max and min are valid
if appoptions.MinWidth > 0 && appoptions.MaxWidth > 0 {
if appoptions.MinWidth > appoptions.MaxWidth {
appoptions.MinWidth = appoptions.MaxWidth
}
}
if appoptions.MinHeight > 0 && appoptions.MaxHeight > 0 {
if appoptions.MinHeight > appoptions.MaxHeight {
appoptions.MinHeight = appoptions.MaxHeight
}
}
// Ensure width and height are limited if max/min is set
if appoptions.Width < appoptions.MinWidth {
appoptions.Width = appoptions.MinWidth
}
if appoptions.MaxWidth > 0 && appoptions.Width > appoptions.MaxWidth {
appoptions.Width = appoptions.MaxWidth
}
if appoptions.Height < appoptions.MinHeight {
appoptions.Height = appoptions.MinHeight
}
if appoptions.MaxHeight > 0 && appoptions.Height > appoptions.MaxHeight {
appoptions.Height = appoptions.MaxHeight
}
switch runtime.GOOS {
case "darwin":
if appoptions.Menu == nil {
appoptions.Menu = defaultMacMenu
}
}
}