We now take into account keypad keys

However, num lock is not accounted for. This still needs to be
implemented.

backends/x/event.go

@@ -111,7 +111,7 @@ func (backend *Backend) handleKeyPress (
 	event xevent.KeyPressEvent,
 ) {
 	keyEvent    := *event.KeyPressEvent
-	button   := backend.keycodeToButton(keyEvent.Detail, keyEvent.State)
+	button, num := backend.keycodeToButton(keyEvent.Detail, keyEvent.State)
 	backend.callbackManager.RunPress (button, stone.Modifiers {
 		// FIXME these may not be correct in all cases
 		Shift:   (keyEvent.State & xproto.ModMaskShift)   > 0,
@@ -120,6 +120,7 @@ func (backend *Backend) handleKeyPress (
 		// Meta:    (keyEvent.State & xproto.??)       > 0,
 		Super:   (keyEvent.State & xproto.ModMask4)       > 0,
 		// Hyper:   (keyEvent.State & xproto.??)       > 0,
+		NumberPad: num,
 	})
 }
 
@@ -128,7 +129,7 @@ func (backend *Backend) handleKeyRelease (
 	event xevent.KeyReleaseEvent,
 ) {
 	keyEvent  := *event.KeyReleaseEvent
-	button   := backend.keycodeToButton(keyEvent.Detail, keyEvent.State)
+	button, _ := backend.keycodeToButton(keyEvent.Detail, keyEvent.State)
 	backend.callbackManager.RunRelease(button)
 }
 

backends/x/unicode.go

@@ -71,11 +71,51 @@ var buttonCodeTable = map[xproto.Keysym] stone.Button {
 	0xFF20: stone.KeyDead,
 }
 
+var keypadCodeTable = map[xproto.Keysym] stone.Button {
+	0xff80: stone.Button(' '),
+	0xff89: stone.KeyTab,
+	0xff8d: stone.KeyEnter,
+	0xff91: stone.KeyF1,
+	0xff92: stone.KeyF2,
+	0xff93: stone.KeyF3,
+	0xff94: stone.KeyF4,
+	0xff95: stone.KeyHome,
+	0xff96: stone.KeyLeft,
+	0xff97: stone.KeyUp,
+	0xff98: stone.KeyRight,
+	0xff99: stone.KeyDown,
+	0xff9a: stone.KeyPageUp,
+	0xff9b: stone.KeyPageDown,
+	0xff9c: stone.KeyEnd,
+	0xff9d: stone.KeyHome,
+	0xff9e: stone.KeyInsert,
+	0xff9f: stone.KeyDelete,
+	0xffbd: stone.Button('='),
+	0xffaa: stone.Button('*'),
+	0xffab: stone.Button('+'),
+	0xffac: stone.Button(','),
+	0xffad: stone.Button('-'),
+	0xffae: stone.Button('.'),
+	0xffaf: stone.Button('/'),
+
+	0xffb0: stone.Button('0'),
+	0xffb1: stone.Button('1'),
+	0xffb2: stone.Button('2'),
+	0xffb3: stone.Button('3'),
+	0xffb4: stone.Button('4'),
+	0xffb5: stone.Button('5'),
+	0xffb6: stone.Button('6'),
+	0xffb7: stone.Button('7'),
+	0xffb8: stone.Button('8'),
+	0xffb9: stone.Button('9'),
+}
+
 func (backend *Backend) keycodeToButton (
 	keycode xproto.Keycode,
 	state   uint16,
 ) (
 	button    stone.Button,
+	numberPad bool,
 ) {
 	// FIXME: also set shift to true if the lock modifier is on and the lock
 	// modifier is interpreted as shiftLock
@@ -168,14 +208,17 @@ func (backend *Backend) keycodeToButton (
 		selectedRune   = symbol2Rune
 	}
 
-	// look up in table
+	// look up in control code table
 	var isControl bool
 	button, isControl = buttonCodeTable[selectedKeysym]
+	if isControl { return }
 
-	// if it wasn't found, 
+	// look up in keypad table
-	if !isControl {
+	button, numberPad = keypadCodeTable[selectedKeysym]
+	if numberPad { return }
+
+	// otherwise, use the rune
 	button = stone.Button(selectedRune)
-	}
 	
 	return
 }

input.go

@@ -94,4 +94,10 @@ type Modifiers struct {
 	Meta    bool
 	Super   bool
 	Hyper   bool
+
+	// NumberPad does not represent a key, but it behaves like one. If it is
+	// set to true, the button was pressed on the number pad. It is treated
+	// as a modifier key because if you don't care whether a key was pressed
+	// on the number pad or not, you can just ignore this value.
+	NumberPad bool
 }