func mouseButtonCallback(w *glfw.Window, button glfw.MouseButton,
action glfw.Action, mod glfw.ModifierKey) {
switch action {
case glfw.Release:
var bue wde.MouseUpEvent
bue.Which = getMouseButton(button)
x, y := w.GetCursorPosition()
bue.Where.X = int(math.Floor(x))
bue.Where.Y = int(math.Floor(y))
if ws, ok := windowMap[w.C()]; ok {
ws.events <- bue
}
case glfw.Press:
var bde wde.MouseDownEvent
bde.Which = getMouseButton(button)
x, y := w.GetCursorPosition()
bde.Where.X = int(math.Floor(x))
bde.Where.Y = int(math.Floor(y))
if ws, ok := windowMap[w.C()]; ok {
ws.events <- bde
}
}
}
func characterCallback(w *glfw.Window, char rune) {
ws := windowMap[w.C()]
if ws == nil {
return
}
characterChan <- characterType{ws, char}
}
func framebufferSizeCallback(w *glfw.Window, width int, height int) {
event := wde.ResizeEvent{width, height}
if ws, ok := windowMap[w.C()]; ok {
ws.buffer.RGBA = image.NewRGBA(image.Rect(0, 0, width, height))
ws.events <- event
}
}
func keyCallback(w *glfw.Window, key glfw.Key, scancode int,
action glfw.Action, mods glfw.ModifierKey) {
ws := windowMap[w.C()]
if ws == nil {
return
}
switch action {
case glfw.Press:
var letter string
var ke wde.KeyEvent
blankLetter := containsInt(blankLetterCodes, key)
if !blankLetter {
letter = string(key)
}
ke.Key = keyMapping[key]
ws.events <- wde.KeyDownEvent(ke)
kte := wde.KeyTypedEvent{
KeyEvent: ke,
Chord: constructChord(key, mods),
Glyph: letter,
}
keyChan <- keyType{ws, kte}
case glfw.Repeat:
var letter string
blankLetter := containsInt(blankLetterCodes, key)
if !blankLetter {
letter = string(key)
}
ke := wde.KeyEvent{keyMapping[key]}
kte := wde.KeyTypedEvent{
KeyEvent: ke,
Chord: constructChord(key, mods),
Glyph: letter,
}
keyChan <- keyType{ws, kte}
case glfw.Release:
var ke wde.KeyUpEvent
ke.Key = keyMapping[key]
ws.events <- ke
}
}
func cursorPositionCallback(w *glfw.Window, xpos float64, ypos float64) {
cursorPosition := image.Point{int(xpos), int(ypos)}
if ws, ok := windowMap[w.C()]; ok {
var event wde.MouseMovedEvent
event.From = lastCursorPosition
event.Where = cursorPosition
ws.events <- event
}
lastCursorPosition = cursorPosition
}
func cursorEnterCallback(w *glfw.Window, entered bool) {
var event interface{}
if entered {
var ene wde.MouseEnteredEvent
x, y := w.GetCursorPosition()
ene.Where.X = int(math.Floor(x))
ene.Where.Y = int(math.Floor(y))
event = ene
} else {
var exe wde.MouseExitedEvent
x, y := w.GetCursorPosition()
exe.Where.X = int(math.Floor(x))
exe.Where.Y = int(math.Floor(y))
event = exe
}
if ws, ok := windowMap[w.C()]; ok {
ws.events <- event
}
}