148 lines
3.2 KiB
Go
148 lines
3.2 KiB
Go
package services
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import (
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"context"
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"github.com/wailsapp/wails/v2/pkg/runtime"
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"sync"
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"time"
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"tinyrdm/backend/consts"
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"tinyrdm/backend/types"
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sliceutil "tinyrdm/backend/utils/slice"
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)
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type systemService struct {
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ctx context.Context
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}
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var system *systemService
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var onceSystem sync.Once
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func System() *systemService {
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if system == nil {
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onceSystem.Do(func() {
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system = &systemService{}
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go system.loopWindowEvent()
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})
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}
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return system
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}
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func (s *systemService) Start(ctx context.Context) {
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s.ctx = ctx
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// maximize the window if screen size is lower than the minimum window size
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if screen, err := runtime.ScreenGetAll(ctx); err == nil && len(screen) > 0 {
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for _, sc := range screen {
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if sc.IsCurrent {
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if sc.Size.Width < consts.MIN_WINDOW_WIDTH || sc.Size.Height < consts.MIN_WINDOW_HEIGHT {
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runtime.WindowMaximise(ctx)
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break
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}
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}
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}
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}
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}
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// SelectFile open file dialog to select a file
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func (s *systemService) SelectFile(title string, extensions []string) (resp types.JSResp) {
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filters := sliceutil.Map(extensions, func(i int) runtime.FileFilter {
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return runtime.FileFilter{
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Pattern: "*." + extensions[i],
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}
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})
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filepath, err := runtime.OpenFileDialog(s.ctx, runtime.OpenDialogOptions{
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Title: title,
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ShowHiddenFiles: true,
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Filters: filters,
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})
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if err != nil {
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resp.Msg = err.Error()
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return
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}
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resp.Success = true
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resp.Data = map[string]any{
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"path": filepath,
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}
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return
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}
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// SaveFile open file dialog to save a file
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func (s *systemService) SaveFile(title string, defaultName string, extensions []string) (resp types.JSResp) {
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filters := sliceutil.Map(extensions, func(i int) runtime.FileFilter {
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return runtime.FileFilter{
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Pattern: "*." + extensions[i],
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}
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})
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filepath, err := runtime.SaveFileDialog(s.ctx, runtime.SaveDialogOptions{
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Title: title,
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ShowHiddenFiles: true,
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DefaultFilename: defaultName,
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Filters: filters,
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})
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if err != nil {
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resp.Msg = err.Error()
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return
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}
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resp.Success = true
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resp.Data = map[string]any{
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"path": filepath,
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}
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return
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}
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func (s *systemService) loopWindowEvent() {
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var fullscreen, maximised, minimised, normal bool
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var width, height int
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var dirty bool
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for {
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time.Sleep(300 * time.Millisecond)
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if s.ctx == nil {
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continue
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}
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dirty = false
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if f := runtime.WindowIsFullscreen(s.ctx); f != fullscreen {
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// full-screen switched
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fullscreen = f
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dirty = true
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}
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if w, h := runtime.WindowGetSize(s.ctx); w != width || h != height {
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// window size changed
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width, height = w, h
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dirty = true
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}
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if m := runtime.WindowIsMaximised(s.ctx); m != maximised {
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maximised = m
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dirty = true
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}
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if m := runtime.WindowIsMinimised(s.ctx); m != minimised {
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minimised = m
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dirty = true
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}
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if n := runtime.WindowIsNormal(s.ctx); n != normal {
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normal = n
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dirty = true
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}
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if dirty {
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runtime.EventsEmit(s.ctx, "window_changed", map[string]any{
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"fullscreen": fullscreen,
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"width": width,
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"height": height,
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"maximised": maximised,
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"minimised": minimised,
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"normal": normal,
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})
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if !fullscreen && !minimised {
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// save window size and position
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Preferences().SaveWindowSize(width, height, maximised)
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}
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}
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}
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}
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