428 lines
10 KiB
Go
428 lines
10 KiB
Go
package x
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import "image"
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import "github.com/jezek/xgbutil"
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import "github.com/jezek/xgb/xproto"
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import "git.tebibyte.media/tomo/xgbkb"
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import "github.com/jezek/xgbutil/xevent"
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import "git.tebibyte.media/tomo/tomo/input"
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var buttonCodeTable = map[xproto.Keysym] input.Key {
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0xFFFFFF: input.KeyNone,
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0xFF63: input.KeyInsert,
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0xFF67: input.KeyMenu,
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0xFF61: input.KeyPrintScreen,
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0xFF6B: input.KeyPause,
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0xFFE5: input.KeyCapsLock,
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0xFF14: input.KeyScrollLock,
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0xFF7F: input.KeyNumLock,
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0xFF08: input.KeyBackspace,
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0xFF09: input.KeyTab,
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0xFE20: input.KeyTab,
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0xFF0D: input.KeyEnter,
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0xFF1B: input.KeyEscape,
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0xFF52: input.KeyUp,
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0xFF54: input.KeyDown,
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0xFF51: input.KeyLeft,
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0xFF53: input.KeyRight,
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0xFF55: input.KeyPageUp,
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0xFF56: input.KeyPageDown,
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0xFF50: input.KeyHome,
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0xFF57: input.KeyEnd,
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0xFFE1: input.KeyLeftShift,
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0xFFE2: input.KeyRightShift,
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0xFFE3: input.KeyLeftControl,
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0xFFE4: input.KeyRightControl,
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0xFFE7: input.KeyLeftMeta,
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0xFFE8: input.KeyRightMeta,
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0xFFE9: input.KeyLeftAlt,
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0xFFEA: input.KeyRightAlt,
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0xFFEB: input.KeyLeftSuper,
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0xFFEC: input.KeyRightSuper,
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0xFFED: input.KeyLeftHyper,
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0xFFEE: input.KeyRightHyper,
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0xFFFF: input.KeyDelete,
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0xFFBE: input.KeyF1,
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0xFFBF: input.KeyF2,
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0xFFC0: input.KeyF3,
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0xFFC1: input.KeyF4,
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0xFFC2: input.KeyF5,
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0xFFC3: input.KeyF6,
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0xFFC4: input.KeyF7,
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0xFFC5: input.KeyF8,
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0xFFC6: input.KeyF9,
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0xFFC7: input.KeyF10,
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0xFFC8: input.KeyF11,
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0xFFC9: input.KeyF12,
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0xFF20: input.KeyDead,
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}
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var keypadCodeTable = map[xproto.Keysym] input.Key {
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0xff80: input.Key(' '),
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0xff89: input.KeyTab,
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0xff8d: input.KeyEnter,
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0xff91: input.KeyF1,
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0xff92: input.KeyF2,
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0xff93: input.KeyF3,
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0xff94: input.KeyF4,
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0xff95: input.KeyHome,
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0xff96: input.KeyLeft,
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0xff97: input.KeyUp,
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0xff98: input.KeyRight,
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0xff99: input.KeyDown,
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0xff9a: input.KeyPageUp,
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0xff9b: input.KeyPageDown,
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0xff9c: input.KeyEnd,
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0xff9d: input.KeyHome,
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0xff9e: input.KeyInsert,
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0xff9f: input.KeyDelete,
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0xffbd: input.Key('='),
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0xffaa: input.Key('*'),
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0xffab: input.Key('+'),
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0xffac: input.Key(','),
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0xffad: input.Key('-'),
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0xffae: input.Key('.'),
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0xffaf: input.Key('/'),
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0xffb0: input.Key('0'),
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0xffb1: input.Key('1'),
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0xffb2: input.Key('2'),
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0xffb3: input.Key('3'),
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0xffb4: input.Key('4'),
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0xffb5: input.Key('5'),
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0xffb6: input.Key('6'),
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0xffb7: input.Key('7'),
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0xffb8: input.Key('8'),
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0xffb9: input.Key('9'),
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}
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func (window *window) handleExpose (
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connection *xgbutil.XUtil,
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event xevent.ExposeEvent,
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) {
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if window.xCanvas == nil {
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window.reallocateCanvas()
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}
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window.compressExpose(*event.ExposeEvent)
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window.pushAll()
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}
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func (window *window) updateBounds () {
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// FIXME: some window managers parent windows more than once, we might
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// need to sum up all their positions.
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decorGeometry, _ := window.xWindow.DecorGeometry()
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windowGeometry, _ := window.xWindow.Geometry()
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origin := image.Pt(
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windowGeometry.X() + decorGeometry.X(),
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windowGeometry.Y() + decorGeometry.Y())
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window.metrics.bounds = image.Rectangle {
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Min: origin,
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Max: origin.Add(image.Pt(windowGeometry.Width(), windowGeometry.Height())),
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}
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}
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func (window *window) handleConfigureNotify (
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connection *xgbutil.XUtil,
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event xevent.ConfigureNotifyEvent,
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) {
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if window.root == nil { return }
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configureEvent := *event.ConfigureNotifyEvent
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newWidth := int(configureEvent.Width)
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newHeight := int(configureEvent.Height)
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sizeChanged :=
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window.metrics.bounds.Dx() != newWidth ||
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window.metrics.bounds.Dy() != newHeight
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window.updateBounds()
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if sizeChanged {
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configureEvent = window.compressConfigureNotify(configureEvent)
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window.reallocateCanvas()
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// TODO figure out what to do with this
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// if !window.exposeEventFollows(configureEvent) {
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// }
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}
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}
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func (window *window) exposeEventFollows (event xproto.ConfigureNotifyEvent) (found bool) {
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nextEvents := xevent.Peek(window.backend.x)
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if len(nextEvents) > 0 {
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untypedEvent := nextEvents[0]
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if untypedEvent.Err == nil {
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typedEvent, ok :=
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untypedEvent.Event.(xproto.ConfigureNotifyEvent)
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if ok && typedEvent.Window == event.Window {
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return true
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}
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}
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}
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return false
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}
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func keycodeToKey (keycode xproto.Keycode, state uint16) (input.Key, bool) {
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keysym, char := xgbkb.KeycodeToKeysym(keycode, state)
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if xgbkb.IsOnNumpad(keysym) {
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// look up in keypad table
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key := keypadCodeTable[keysym]
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return key, true
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} else {
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// look up in control code table
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key, isControl := buttonCodeTable[keysym]
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if isControl {
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return key, false
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} else {
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// return as rune
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return input.Key(char), false
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}
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}
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}
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func (window *window) handleKeyPress (
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connection *xgbutil.XUtil,
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event xevent.KeyPressEvent,
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) {
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if window.hasModal { return }
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keyEvent := *event.KeyPressEvent
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key, numberPad := keycodeToKey(keyEvent.Detail, keyEvent.State)
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window.updateModifiers(keyEvent.State)
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if key == input.KeyTab && window.modifiers.Alt {
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if window.modifiers.Shift {
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window.focusPrevious()
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} else {
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window.focusNext()
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}
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} else if key == input.KeyEscape && window.shy {
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window.Close()
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} else if window.focused != nil {
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window.focused.handleKeyDown(key, numberPad)
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}
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}
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func (window *window) handleKeyRelease (
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connection *xgbutil.XUtil,
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event xevent.KeyReleaseEvent,
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) {
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if window.hasModal { return }
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keyEvent := *event.KeyReleaseEvent
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// do not process this event if it was generated from a key repeat
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nextEvents := xevent.Peek(window.backend.x)
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if len(nextEvents) > 0 {
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untypedEvent := nextEvents[0]
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if untypedEvent.Err == nil {
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typedEvent, ok :=
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untypedEvent.Event.(xproto.KeyPressEvent)
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if ok && typedEvent.Detail == keyEvent.Detail &&
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typedEvent.Event == keyEvent.Event &&
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typedEvent.State == keyEvent.State {
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return
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}
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}
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}
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key, numberPad := keycodeToKey(keyEvent.Detail, keyEvent.State)
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window.updateModifiers(keyEvent.State)
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if window.focused != nil {
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window.focused.handleKeyUp(key, numberPad)
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}
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}
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func (window *window) handleButtonPress (
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connection *xgbutil.XUtil,
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event xevent.ButtonPressEvent,
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) {
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if window.hasModal { return }
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buttonEvent := *event.ButtonPressEvent
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point := image.Pt(int(buttonEvent.EventX), int(buttonEvent.EventY))
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insideWindow := point.In(window.xCanvas.Bounds())
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scrolling := buttonEvent.Detail >= 4 && buttonEvent.Detail <= 7
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window.updateModifiers(buttonEvent.State)
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window.updateMousePosition(buttonEvent.EventX, buttonEvent.EventY)
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if !insideWindow && window.shy && !scrolling {
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window.Close()
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} else if scrolling {
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// TODO
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// underneath := window.scrollTargetChildAt(point)
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// if underneath != nil {
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// if child, ok := underneath.element.(ability.ScrollTarget); ok {
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// sum := scrollSum { }
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// sum.add(buttonEvent.Detail, window, buttonEvent.State)
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// window.compressScrollSum(buttonEvent, &sum)
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// child.HandleScroll (
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// point, float64(sum.x), float64(sum.y),
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// modifiers)
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// }
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// }
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} else {
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underneath := window.boxUnder(point)
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window.drags[buttonEvent.Detail] = underneath
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if underneath != nil {
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underneath.handleMouseDown(input.Button(buttonEvent.Detail))
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}
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}
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}
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func (window *window) handleButtonRelease (
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connection *xgbutil.XUtil,
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event xevent.ButtonReleaseEvent,
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) {
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if window.hasModal { return }
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buttonEvent := *event.ButtonReleaseEvent
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if buttonEvent.Detail >= 4 && buttonEvent.Detail <= 7 { return }
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window.updateModifiers(buttonEvent.State)
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window.updateMousePosition(buttonEvent.EventX, buttonEvent.EventY)
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dragging := window.drags[buttonEvent.Detail]
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if dragging != nil {
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dragging.handleMouseUp(input.Button(buttonEvent.Detail))
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}
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}
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func (window *window) handleMotionNotify (
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connection *xgbutil.XUtil,
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event xevent.MotionNotifyEvent,
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) {
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if window.hasModal { return }
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motionEvent := window.compressMotionNotify(*event.MotionNotifyEvent)
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x := int(motionEvent.EventX)
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y := int(motionEvent.EventY)
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handled := false
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for _, child := range window.drags {
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if child == nil { continue }
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child.handleMouseMove()
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handled = true
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}
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if !handled {
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window.boxUnder(image.Pt(x, y)).handleMouseMove()
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}
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}
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func (window *window) compressExpose (
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firstEvent xproto.ExposeEvent,
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) (
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lastEvent xproto.ExposeEvent,
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region image.Rectangle,
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) {
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region = image.Rect (
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int(firstEvent.X), int(firstEvent.Y),
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int(firstEvent.X + firstEvent.Width),
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int(firstEvent.Y + firstEvent.Height))
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window.backend.x.Sync()
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xevent.Read(window.backend.x, false)
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lastEvent = firstEvent
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for index, untypedEvent := range xevent.Peek(window.backend.x) {
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if untypedEvent.Err != nil { continue }
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typedEvent, ok := untypedEvent.Event.(xproto.ExposeEvent)
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if !ok { continue }
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if firstEvent.Window == typedEvent.Window {
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region = region.Union (image.Rect (
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int(typedEvent.X), int(typedEvent.Y),
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int(typedEvent.X + typedEvent.Width),
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int(typedEvent.Y + typedEvent.Height)))
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lastEvent = typedEvent
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defer func (index int) {
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xevent.DequeueAt(window.backend.x, index)
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} (index)
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}
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}
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return
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}
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func (window *window) compressConfigureNotify (
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firstEvent xproto.ConfigureNotifyEvent,
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) (
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lastEvent xproto.ConfigureNotifyEvent,
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) {
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window.backend.x.Sync()
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xevent.Read(window.backend.x, false)
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lastEvent = firstEvent
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for index, untypedEvent := range xevent.Peek(window.backend.x) {
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if untypedEvent.Err != nil { continue }
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typedEvent, ok := untypedEvent.Event.(xproto.ConfigureNotifyEvent)
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if !ok { continue }
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if firstEvent.Event == typedEvent.Event &&
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firstEvent.Window == typedEvent.Window {
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lastEvent = typedEvent
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defer func (index int) {
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xevent.DequeueAt(window.backend.x, index)
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} (index)
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}
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}
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return
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}
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func (window *window) compressMotionNotify (
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firstEvent xproto.MotionNotifyEvent,
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) (
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lastEvent xproto.MotionNotifyEvent,
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) {
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window.backend.x.Sync()
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xevent.Read(window.backend.x, false)
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lastEvent = firstEvent
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for index, untypedEvent := range xevent.Peek(window.backend.x) {
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if untypedEvent.Err != nil { continue }
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typedEvent, ok := untypedEvent.Event.(xproto.MotionNotifyEvent)
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if !ok { continue }
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if firstEvent.Event == typedEvent.Event {
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lastEvent = typedEvent
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defer func (index int) {
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xevent.DequeueAt(window.backend.x, index)
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} (index)
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}
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}
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return
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}
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func (window *window) updateModifiers (state uint16) {
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modifiers := xgbkb.StateToModifiers(state)
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window.modifiers.Shift = modifiers.Shift || modifiers.ShiftLock
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window.modifiers.Control = modifiers.Control
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window.modifiers.Alt = modifiers.Alt
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window.modifiers.Meta = modifiers.Meta
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window.modifiers.Super = modifiers.Super
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window.modifiers.Hyper = modifiers.Hyper
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}
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func (window *window) updateMousePosition (x, y int16) {
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window.mousePosition = image.Pt(int(x), int(y))
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}
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