func (b *SplitterBar) Init(outer SplitterBarOuter, theme gxui.Theme) {
b.Control.Init(outer, theme)
b.outer = outer
b.theme = theme
b.onDragStart = gxui.CreateEvent(func(gxui.MouseEvent) {})
b.onDragEnd = gxui.CreateEvent(func(gxui.MouseEvent) {})
b.backgroundColor = gxui.Red
b.foregroundColor = gxui.Green
}
func (t *TextBox) Init(outer TextBoxOuter, driver gxui.Driver, theme gxui.Theme, font gxui.Font) {
t.List.Init(outer, theme)
t.Focusable.Init(outer)
t.outer = outer
t.driver = driver
t.font = font
t.onRedrawLines = gxui.CreateEvent(func() {})
t.controller = gxui.CreateTextBoxController()
t.adapter = &TextBoxAdapter{TextBox: t}
t.desiredWidth = 100
t.SetScrollBarEnabled(false) // Defaults to single line
t.OnGainedFocus(func() { t.onRedrawLines.Fire() })
t.OnLostFocus(func() { t.onRedrawLines.Fire() })
t.horizScroll = theme.CreateScrollBar()
t.horizScrollChild = t.AddChild(t.horizScroll)
t.horizScroll.SetOrientation(gxui.Horizontal)
t.horizScroll.OnScroll(func(from, to int) {
t.SetHorizOffset(from)
})
t.controller.OnTextChanged(func([]gxui.TextBoxEdit) {
t.onRedrawLines.Fire()
t.List.DataChanged(false)
})
t.controller.OnSelectionChanged(func() {
t.onRedrawLines.Fire()
})
t.List.SetAdapter(t.adapter)
// Interface compliance test
_ = gxui.TextBox(t)
}
func (s *ScrollBar) Init(outer ScrollBarOuter, theme gxui.Theme) {
s.Control.Init(outer, theme)
s.outer = outer
s.thickness = 10
s.minBarLength = 10
s.scrollPositionFrom = 0
s.scrollPositionTo = 100
s.scrollLimit = 100
s.onScroll = gxui.CreateEvent(s.SetScrollPosition)
// Interface compliance test
_ = gxui.ScrollBar(s)
}
func (m *InputEventHandler) getOnMouseDown() gxui.Event {
if m.onMouseDown == nil {
m.onMouseDown = gxui.CreateEvent(m.MouseDown)
}
return m.onMouseDown
}
func (m *InputEventHandler) getOnMouseExit() gxui.Event {
if m.onMouseExit == nil {
m.onMouseExit = gxui.CreateEvent(m.MouseExit)
}
return m.onMouseExit
}
func (m *InputEventHandler) getOnMouseEnter() gxui.Event {
if m.onMouseEnter == nil {
m.onMouseEnter = gxui.CreateEvent(m.MouseEnter)
}
return m.onMouseEnter
}
func (m *InputEventHandler) getOnMouseMove() gxui.Event {
if m.onMouseMove == nil {
m.onMouseMove = gxui.CreateEvent(m.MouseMove)
}
return m.onMouseMove
}
func (m *InputEventHandler) getOnKeyStroke() gxui.Event {
if m.onKeyStroke == nil {
m.onKeyStroke = gxui.CreateEvent(m.KeyStroke)
}
return m.onKeyStroke
}
func (w *Window) Init(outer WindowOuter, driver gxui.Driver, width, height int, title string) {
w.Attachable.Init(outer)
w.BackgroundBorderPainter.Init(outer)
w.Container.Init(outer)
w.Paddable.Init(outer)
w.PaintChildren.Init(outer)
w.outer = outer
w.driver = driver
w.onClose = gxui.CreateEvent(func() {})
w.onResize = gxui.CreateEvent(func() {})
w.onMouseMove = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onMouseEnter = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onMouseExit = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onMouseDown = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onMouseUp = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onMouseScroll = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onKeyDown = gxui.CreateEvent(func(gxui.KeyboardEvent) {})
w.onKeyUp = gxui.CreateEvent(func(gxui.KeyboardEvent) {})
w.onKeyRepeat = gxui.CreateEvent(func(gxui.KeyboardEvent) {})
w.onKeyStroke = gxui.CreateEvent(func(gxui.KeyStrokeEvent) {})
w.onClick = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.onDoubleClick = gxui.CreateEvent(func(gxui.MouseEvent) {})
w.focusController = gxui.CreateFocusController(outer)
w.mouseController = gxui.CreateMouseController(outer, w.focusController)
w.keyboardController = gxui.CreateKeyboardController(outer)
w.onResize.Listen(func() {
w.outer.LayoutChildren()
w.Draw()
})
w.SetBorderPen(gxui.TransparentPen)
w.setViewport(driver.CreateWindowedViewport(width, height, title))
// Window starts shown
w.Attach()
// Interface compliance test
_ = gxui.Window(w)
}
func newViewport(driver *driver, width, height int, title string, fullscreen bool) *viewport {
v := &viewport{
fullscreen: fullscreen,
scaling: 1,
title: title,
}
glfw.DefaultWindowHints()
glfw.WindowHint(glfw.Samples, 4)
var monitor *glfw.Monitor
if fullscreen {
monitor = glfw.GetPrimaryMonitor()
if width == 0 || height == 0 {
vm := monitor.GetVideoMode()
width, height = vm.Width, vm.Height
}
}
wnd, err := glfw.CreateWindow(width, height, v.title, monitor, nil)
if err != nil {
panic(err)
}
width, height = wnd.GetSize() // At this time, width and height serve as a "hint" for glfw.CreateWindow, so get actual values from window.
wnd.MakeContextCurrent()
v.context = newContext()
cursorPoint := func(x, y float64) math.Point {
// HACK: xpos is off by 1 and ypos is off by 3 on OSX.
// Compensate until real fix is found.
x -= 1.0
y -= 3.0
return math.Point{X: int(x), Y: int(y)}.ScaleS(1 / v.scaling)
}
wnd.SetCloseCallback(func(*glfw.Window) {
v.Close()
})
wnd.SetPosCallback(func(w *glfw.Window, x, y int) {
v.Lock()
v.position = math.NewPoint(x, y)
v.Unlock()
})
wnd.SetSizeCallback(func(_ *glfw.Window, w, h int) {
v.Lock()
v.sizeDipsUnscaled = math.Size{W: w, H: h}
v.sizeDips = v.sizeDipsUnscaled.ScaleS(1 / v.scaling)
v.Unlock()
v.onResize.Fire()
})
wnd.SetFramebufferSizeCallback(func(_ *glfw.Window, w, h int) {
v.Lock()
v.sizePixels = math.Size{W: w, H: h}
v.Unlock()
gl.Viewport(0, 0, w, h)
gl.ClearColor(clearColorR, clearColorG, clearColorB, 1.0)
gl.Clear(gl.COLOR_BUFFER_BIT)
})
wnd.SetCursorPosCallback(func(w *glfw.Window, x, y float64) {
p := cursorPoint(w.GetCursorPos())
v.Lock()
if v.pendingMouseMoveEvent == nil {
v.pendingMouseMoveEvent = &gxui.MouseEvent{}
driver.Call(func() {
v.Lock()
ev := *v.pendingMouseMoveEvent
v.pendingMouseMoveEvent = nil
v.Unlock()
v.onMouseMove.Fire(ev)
})
}
v.pendingMouseMoveEvent.Point = p
v.pendingMouseMoveEvent.State = getMouseState(w)
v.Unlock()
})
wnd.SetCursorEnterCallback(func(w *glfw.Window, entered bool) {
p := cursorPoint(w.GetCursorPos())
ev := gxui.MouseEvent{
Point: p,
}
ev.State = getMouseState(w)
if entered {
v.onMouseEnter.Fire(ev)
} else {
v.onMouseExit.Fire(ev)
}
})
wnd.SetScrollCallback(func(w *glfw.Window, xoff, yoff float64) {
p := cursorPoint(w.GetCursorPos())
v.Lock()
if v.pendingMouseScrollEvent == nil {
v.pendingMouseScrollEvent = &gxui.MouseEvent{}
driver.Call(func() {
v.Lock()
ev := *v.pendingMouseScrollEvent
v.pendingMouseScrollEvent = nil
ev.ScrollX, ev.ScrollY = int(v.scrollAccumX), int(v.scrollAccumY)
if ev.ScrollX != 0 || ev.ScrollY != 0 {
v.scrollAccumX -= float64(ev.ScrollX)
v.scrollAccumY -= float64(ev.ScrollY)
v.Unlock()
v.onMouseScroll.Fire(ev)
} else {
v.Unlock()
}
})
}
v.pendingMouseScrollEvent.Point = p
v.scrollAccumX += xoff * platform.ScrollSpeed
v.scrollAccumY += yoff * platform.ScrollSpeed
v.pendingMouseScrollEvent.State = getMouseState(w)
v.Unlock()
})
wnd.SetMouseButtonCallback(func(w *glfw.Window, button glfw.MouseButton, action glfw.Action, mod glfw.ModifierKey) {
p := cursorPoint(w.GetCursorPos())
ev := gxui.MouseEvent{
Point: p,
Modifier: translateKeyboardModifier(mod),
}
ev.Button = translateMouseButton(button)
ev.State = getMouseState(w)
if action == glfw.Press {
v.onMouseDown.Fire(ev)
} else {
v.onMouseUp.Fire(ev)
}
})
wnd.SetKeyCallback(func(w *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
ev := gxui.KeyboardEvent{
Key: translateKeyboardKey(key),
Modifier: translateKeyboardModifier(mods),
}
switch action {
case glfw.Press:
v.onKeyDown.Fire(ev)
case glfw.Release:
v.onKeyUp.Fire(ev)
case glfw.Repeat:
v.onKeyRepeat.Fire(ev)
}
})
wnd.SetCharModsCallback(func(w *glfw.Window, char rune, mods glfw.ModifierKey) {
if !unicode.IsControl(char) &&
!unicode.IsGraphic(char) &&
!unicode.IsLetter(char) &&
!unicode.IsMark(char) &&
!unicode.IsNumber(char) &&
!unicode.IsPunct(char) &&
!unicode.IsSpace(char) &&
!unicode.IsSymbol(char) {
return // Weird unicode character. Ignore
}
ev := gxui.KeyStrokeEvent{
Character: char,
Modifier: translateKeyboardModifier(mods),
}
v.onKeyStroke.Fire(ev)
})
wnd.SetRefreshCallback(func(w *glfw.Window) {
if v.canvas != nil {
v.render()
}
})
fw, fh := wnd.GetFramebufferSize()
posX, posY := wnd.GetPos()
// Pre-multiplied alpha blending
gl.BlendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.BLEND)
gl.Enable(gl.SCISSOR_TEST)
gl.Viewport(0, 0, fw, fh)
gl.Scissor(0, 0, int32(fw), int32(fh))
gl.ClearColor(clearColorR, clearColorG, clearColorB, 1.0)
gl.Clear(gl.COLOR_BUFFER_BIT)
wnd.SwapBuffers()
v.window = wnd
v.driver = driver
v.onClose = driver.createAppEvent(func() {})
v.onResize = driver.createAppEvent(func() {})
v.onMouseMove = gxui.CreateEvent(func(gxui.MouseEvent) {})
v.onMouseEnter = driver.createAppEvent(func(gxui.MouseEvent) {})
v.onMouseExit = driver.createAppEvent(func(gxui.MouseEvent) {})
v.onMouseDown = driver.createAppEvent(func(gxui.MouseEvent) {})
v.onMouseUp = driver.createAppEvent(func(gxui.MouseEvent) {})
v.onMouseScroll = gxui.CreateEvent(func(gxui.MouseEvent) {})
v.onKeyDown = driver.createAppEvent(func(gxui.KeyboardEvent) {})
v.onKeyUp = driver.createAppEvent(func(gxui.KeyboardEvent) {})
v.onKeyRepeat = driver.createAppEvent(func(gxui.KeyboardEvent) {})
v.onKeyStroke = driver.createAppEvent(func(gxui.KeyStrokeEvent) {})
v.onDestroy = driver.createDriverEvent(func() {})
v.sizeDipsUnscaled = math.Size{W: width, H: height}
v.sizeDips = v.sizeDipsUnscaled.ScaleS(1 / v.scaling)
v.sizePixels = math.Size{W: fw, H: fh}
v.position = math.Point{X: posX, Y: posY}
return v
}
func (m *InputEventHandler) getOnKeyRepeat() gxui.Event {
if m.onKeyRepeat == nil {
m.onKeyRepeat = gxui.CreateEvent(m.KeyRepeat)
}
return m.onKeyRepeat
}
func (l *List) OnSelectionChanged(f func(gxui.AdapterItem)) gxui.EventSubscription {
if l.onItemClicked == nil {
l.onSelectionChanged = gxui.CreateEvent(f)
}
return l.onSelectionChanged.Listen(f)
}
func (a *Attachable) OnDetach(f func()) gxui.EventSubscription {
if a.onDetach == nil {
a.onDetach = gxui.CreateEvent(func() {})
}
return a.onDetach.Listen(f)
}
func (f *Focusable) OnLostFocus(l func()) gxui.EventSubscription {
if f.onLostFocus == nil {
f.onLostFocus = gxui.CreateEvent(f.LostFocus)
}
return f.onLostFocus.Listen(l)
}
func (m *InputEventHandler) getOnMouseUp() gxui.Event {
if m.onMouseUp == nil {
m.onMouseUp = gxui.CreateEvent(m.MouseUp)
}
return m.onMouseUp
}
func (m *InputEventHandler) getOnDoubleClick() gxui.Event {
if m.onDoubleClick == nil {
m.onDoubleClick = gxui.CreateEvent(m.DoubleClick)
}
return m.onDoubleClick
}
func (m *InputEventHandler) getOnMouseScroll() gxui.Event {
if m.onMouseScroll == nil {
m.onMouseScroll = gxui.CreateEvent(m.MouseScroll)
}
return m.onMouseScroll
}
func (m *InputEventHandler) getOnKeyPress() gxui.Event {
if m.onKeyPress == nil {
m.onKeyPress = gxui.CreateEvent(m.KeyPress)
}
return m.onKeyPress
}
func (l *DropDownList) OnHideList(f func()) gxui.EventSubscription {
if l.onHideList == nil {
l.onHideList = gxui.CreateEvent(f)
}
return l.onHideList.Listen(f)
}
// OnChange registers f to be called when the node is expanded, collapsed or has
// a change in the number of children.
func (n *TreeToListNode) OnChange(f func()) gxui.EventSubscription {
if n.onChange == nil {
n.onChange = gxui.CreateEvent(f)
}
return n.onChange.Listen(f)
}