129 lines
2.5 KiB
Go
129 lines
2.5 KiB
Go
package x
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import "tomo"
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import defaultTheme "tomo/default/theme"
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import defaultConfig "tomo/default/config"
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import "github.com/jezek/xgbutil"
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import "github.com/jezek/xgb/xproto"
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import "github.com/jezek/xgbutil/xevent"
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import "github.com/jezek/xgbutil/keybind"
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import "github.com/jezek/xgbutil/mousebind"
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type backend struct {
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connection *xgbutil.XUtil
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doChannel chan(func ())
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modifierMasks struct {
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capsLock uint16
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shiftLock uint16
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numLock uint16
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modeSwitch uint16
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alt uint16
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meta uint16
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super uint16
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hyper uint16
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}
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theme tomo.Theme
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config tomo.Config
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windows map[xproto.Window] *window
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open bool
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}
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// NewBackend instantiates an X backend.
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func NewBackend () (output tomo.Backend, err error) {
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backend := &backend {
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windows: map[xproto.Window] *window { },
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doChannel: make(chan func (), 32),
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open: true,
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}
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backend.SetTheme(nil)
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backend.SetConfig(nil)
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// connect to X
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backend.connection, err = xgbutil.NewConn()
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if err != nil { return }
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backend.initializeKeymapInformation()
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keybind.Initialize(backend.connection)
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mousebind.Initialize(backend.connection)
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output = backend
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return
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}
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func (backend *backend) Run () (err error) {
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backend.assert()
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pingBefore,
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pingAfter,
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pingQuit := xevent.MainPing(backend.connection)
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for {
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select {
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case <- pingBefore:
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<- pingAfter
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case callback := <- backend.doChannel:
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callback()
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case <- pingQuit:
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return
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}
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for _, window := range backend.windows {
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window.system.afterEvent()
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}
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}
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}
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func (backend *backend) Stop () {
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backend.assert()
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if !backend.open { return }
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backend.open = false
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toClose := []*window { }
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for _, window := range backend.windows {
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toClose = append(toClose, window)
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}
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for _, window := range toClose {
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window.Close()
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}
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xevent.Quit(backend.connection)
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backend.connection.Conn().Close()
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}
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func (backend *backend) Do (callback func ()) {
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backend.assert()
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backend.doChannel <- callback
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}
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func (backend *backend) SetTheme (theme tomo.Theme) {
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backend.assert()
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if theme == nil {
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backend.theme = defaultTheme.Default { }
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} else {
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backend.theme = theme
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}
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for _, window := range backend.windows {
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window.handleThemeChange()
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}
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}
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func (backend *backend) SetConfig (config tomo.Config) {
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backend.assert()
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if config == nil {
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backend.config = defaultConfig.Default { }
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} else {
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backend.config = config
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}
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for _, window := range backend.windows {
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window.handleConfigChange()
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}
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}
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func (backend *backend) assert () {
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if backend == nil { panic("nil backend") }
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}
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