gxui

type AdapterBase struct {
	// contains filtered or unexported fields
}

type AdapterItem interface{}

type AspectMode int

type Brush struct {
	Color Color
}

type BubbleOverlay interface {
	Control
	Show(control Control, target math.Point)
	Hide()
}

type Button interface {
	LinearLayout
	Text() string
	SetText(string)
	Type() ButtonType
	SetType(ButtonType)
	IsChecked() bool
	SetChecked(bool)
}

type ButtonType int

type Canvas interface {
	Size() math.Size
	IsComplete() bool
	Complete()
	Push()
	Pop()
	AddClip(math.Rect)
	Clear(Color)
	DrawCanvas(c Canvas, position math.Point)
	DrawTexture(t Texture, bounds math.Rect)
	DrawRunes(font Font, runes []rune, points []math.Point, color Color)
	DrawLines(Polygon, Pen)
	DrawPolygon(Polygon, Pen, Brush)
	DrawRect(math.Rect, Brush)
	DrawRoundedRect(rect math.Rect, tl, tr, bl, br float32, p Pen, b Brush)
}

type ChanneledEvent struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

type Child struct {
	Control Control
	Offset  math.Point
}

type Children []*Child

type CodeEditor interface {
	TextBox
	SyntaxLayers() CodeSyntaxLayers
	SetSyntaxLayers(CodeSyntaxLayers)
	TabWidth() int
	SetTabWidth(int)
	SuggestionProvider() CodeSuggestionProvider
	SetSuggestionProvider(CodeSuggestionProvider)
	ShowSuggestionList()
	HideSuggestionList()
}

type CodeSuggestion interface {
	Name() string
	Code() string
}

type CodeSuggestionProvider interface {
	SuggestionsAt(runeIndex int) []CodeSuggestion
}

type CodeSyntaxLayer struct {
	// contains filtered or unexported fields
}

type CodeSyntaxLayers []*CodeSyntaxLayer

type Color struct {
	R, G, B, A float32
}

type Container interface {
	Parent
	AddChild(child Control) *Child
	AddChildAt(index int, child Control) *Child
	RemoveChild(child Control)
	RemoveChildAt(index int)
	RemoveAll()
	Padding() math.Spacing
	SetPadding(math.Spacing)
}

type Control interface {
	// Size returns the size of the control. If the control is not attached, then
	// the returned size is undefined.
	Size() math.Size

	// SetSize sets the size of the control to the specified value.
	// SetSize should only be called by the parent of the control during layout.
	SetSize(math.Size)

	// Draw draws the control's visual apperance into the returned, new canvas.
	// Draw is typically called by the parent of the control - calling Draw will
	// not issue a re-draw of an attached control.
	Draw() Canvas

	// Parent returns the parent of the control.
	Parent() Parent

	// SetParent sets the parent of the control.
	// SetParent should only be called by the new parent of the control.
	SetParent(Parent)

	// Attached returns true if the control is directly or indirectly attached
	// to a window.
	Attached() bool

	// Attach is called when the control is directly or indirectly attached to a
	// window.
	// Attach should only be called by the parent of the control.
	Attach()

	// Detach is called when the control is directly or indirectly detached from a
	// window.
	// Detach should only be called by the parent of the control.
	Detach()

	// DesiredSize returns the desired size of the control based on the min and
	// max size limits. The parent control may ignore the desired size.
	DesiredSize(min, max math.Size) math.Size

	// Margin returns the desired spacing between sibling controls.
	Margin() math.Spacing

	// SetMargin set the desired spacing between sibling controls, issuing a
	// relayout if the margin has changed.
	SetMargin(math.Spacing)

	// IsVisible returns true if the control is visible.
	IsVisible() bool

	// SetVisible sets the visibility of the control.
	SetVisible(bool)

	// ContainsPoint returns true if the specified local-space point is considered
	// within the control.
	ContainsPoint(math.Point) bool

	// IsMouseOver returns true if the mouse cursor was last reported within the
	// control.
	IsMouseOver() bool

	// IsMouseDown returns true if button was last reported pressed on the
	// control.
	IsMouseDown(button MouseButton) bool

	// Click is called when the mouse is pressed and released on the control.
	// If Click returns true, then the click event is consumed by the control,
	// otherwise the next control below the should be considered for the click
	// event.
	Click(MouseEvent) (consume bool)

	// DoubleClick is called when the mouse is double-clicked on the control.
	// If DoubleClick returns true, then the double-click event is consumed by the
	// control, otherwise the next control below the should be considered for the
	// double-click event.
	DoubleClick(MouseEvent) (consume bool)

	// KeyPress is called when a keyboard key is pressed while the control (or
	// non-consuming child) has focus. If KeyPress returns true, then the
	// key-press event is consumed by the control, otherwise the parent control
	// should be considered for the key-press event.
	KeyPress(KeyboardEvent) (consume bool)

	// KeyStroke is called when a key-storke is made while the control (or
	// non-consuming child) has focus. If KeyStroke returns true, then the
	// key-stroke event is consumed by the control, otherwise the parent control
	// should be considered for the key-stroke event.
	KeyStroke(KeyStrokeEvent) (consume bool)

	// MouseScroll is called when a mouse scroll is made while the control (or
	// non-consuming child) has focus. If MouseScroll returns true, then the
	// mouse-scroll event is consumed by the control, otherwise the parent control
	// should be considered for the key-stroke event.
	MouseScroll(MouseEvent) (consume bool)

	// MouseMove is called when the mouse cursor moves over the control.
	MouseMove(MouseEvent)

	// MouseEnter is called when the mouse cursor transitions from outside to
	// inside the bounds of the control.
	MouseEnter(MouseEvent)

	// MouseExit is called when the mouse cursor transitions from inside to
	// outside the bounds of the control.
	MouseExit(MouseEvent)

	// MouseDown is called when a mouse button is pressed while the mouse cursor
	// is over the control.
	MouseDown(MouseEvent)

	// MouseUp is called when a mouse button is released while the mouse cursor
	// is over the control.
	MouseUp(MouseEvent)

	// KeyDown is called when a keyboard button is pressed while the control (or
	// child control) has focus.
	KeyDown(KeyboardEvent)

	// KeyUp is called when a keyboard button is released while the control (or
	// child control) has focus.
	KeyUp(KeyboardEvent)

	// KeyRepeat is called when a keyboard button held long enough for a
	// repeat-key event while the control (or child control) has focus.
	KeyRepeat(KeyboardEvent)

	// OnAttach subscribes f to be called whenever the control is attached.
	OnAttach(f func()) EventSubscription

	// OnDetach subscribes f to be called whenever the control is detached.
	OnDetach(f func()) EventSubscription

	// OnKeyPress subscribes f to be called whenever the control receives a
	// key-press event.
	OnKeyPress(f func(KeyboardEvent)) EventSubscription

	// OnKeyStroke subscribes f to be called whenever the control receives a
	// key-stroke event.
	OnKeyStroke(f func(KeyStrokeEvent)) EventSubscription

	// OnClick subscribes f to be called whenever the control receives a click
	// event.
	OnClick(f func(MouseEvent)) EventSubscription

	// OnDoubleClick subscribes f to be called whenever the control receives a
	// double-click event.
	OnDoubleClick(f func(MouseEvent)) EventSubscription

	// OnMouseMove subscribes f to be called whenever the control receives a
	// mouse-move event.
	OnMouseMove(f func(MouseEvent)) EventSubscription

	// OnMouseEnter subscribes f to be called whenever the control receives a
	// mouse-enter event.
	OnMouseEnter(f func(MouseEvent)) EventSubscription

	// OnMouseExit subscribes f to be called whenever the control receives a
	// mouse-exit event.
	OnMouseExit(f func(MouseEvent)) EventSubscription

	// OnMouseDown subscribes f to be called whenever the control receives a
	// mouse-down event.
	OnMouseDown(f func(MouseEvent)) EventSubscription

	// OnMouseUp subscribes f to be called whenever the control receives a
	// mouse-up event.
	OnMouseUp(f func(MouseEvent)) EventSubscription

	// OnMouseScroll subscribes f to be called whenever the control receives a
	// mouse-scroll event.
	OnMouseScroll(f func(MouseEvent)) EventSubscription

	// OnKeyDown subscribes f to be called whenever the control receives a
	// key-down event.
	OnKeyDown(f func(KeyboardEvent)) EventSubscription

	// OnKeyUp subscribes f to be called whenever the control receives a
	// key-up event.
	OnKeyUp(f func(KeyboardEvent)) EventSubscription

	// OnKeyRepeat subscribes f to be called whenever the control receives a
	// key-repeat event.
	OnKeyRepeat(f func(KeyboardEvent)) EventSubscription
}

type ControlList []Control

type ControlPoint struct {
	C Control
	P math.Point
}

type ControlPointList []ControlPoint

type DefaultAdapter struct {
	AdapterBase
	// contains filtered or unexported fields
}

type Direction int

type Driver interface {
	// Call queues f to be run on the UI go-routine, returning before f may have
	// been called. Call returns false if the driver has been terminated, in which
	// case f may not be called.
	Call(f func()) bool

	// CallSync queues and then blocks for f to be run on the UI go-routine.
	// Call returns false if the driver has been terminated, in which case f may
	// not be called.
	CallSync(f func()) bool

	Terminate()
	SetClipboard(str string)
	GetClipboard() (string, error)

	// CreateFont loads a font from the provided TrueType bytes.
	CreateFont(data []byte, size int) (Font, error)

	// CreateWindowedViewport creates a new windowed Viewport with the specified
	// width and height in device independent pixels.
	CreateWindowedViewport(width, height int, name string) Viewport

	// CreateFullscreenViewport creates a new fullscreen Viewport with the
	// specified width and height in device independent pixels. If width or
	// height is 0, then the viewport adopts the current screen resolution.
	CreateFullscreenViewport(width, height int, name string) Viewport

	CreateCanvas(math.Size) Canvas
	CreateTexture(img image.Image, pixelsPerDip float32) Texture

	// Debug function used to verify that the caller is executing on the UI
	// go-routine. If the caller is not on the UI go-routine then the function
	// panics.
	AssertUIGoroutine()
}

type DropDownList interface {
	Focusable
	Container
	SetBubbleOverlay(BubbleOverlay)
	BubbleOverlay() BubbleOverlay
	Adapter() ListAdapter
	SetAdapter(ListAdapter)
	BorderPen() Pen
	SetBorderPen(Pen)
	BackgroundBrush() Brush
	SetBackgroundBrush(Brush)
	Selected() AdapterItem
	Select(AdapterItem)
	OnSelectionChanged(func(AdapterItem)) EventSubscription
	OnShowList(func()) EventSubscription
	OnHideList(func()) EventSubscription
}

type Event interface {
	Fire(args ...interface{})
	Listen(interface{}) EventSubscription
	ParameterTypes() []reflect.Type
}

type EventBase struct {
	// contains filtered or unexported fields
}

type EventListener struct {
	Id       int
	Function reflect.Value
}

type EventSubscription interface {
	Unlisten()
}

type FilteredListAdapter struct {
	DefaultAdapter
	// contains filtered or unexported fields
}

type FilteredListItem struct {
	Name string
	Data interface{}
}

type FocusController struct {
	// contains filtered or unexported fields
}

type Focusable interface {
	Control

	// IsFocusable returns true if the control is currently in a state where it
	// can acquire focus.
	IsFocusable() bool

	// HasFocus returns true when the control has focus.
	HasFocus() bool

	// GainedFocus is called when the Focusable gains focus.
	// This method is called by the FocusManager should not be called by the user.
	GainedFocus()

	// LostFocus is called when the Focusable loses focus.
	// This method is called by the FocusManager should not be called by the user.
	LostFocus()

	// OnGainedFocus subscribes f to be called whenever the control gains focus.
	OnGainedFocus(f func()) EventSubscription

	// OnLostFocus subscribes f to be called whenever the control loses focus.
	OnLostFocus(f func()) EventSubscription
}

type Font interface {
	LoadGlyphs(first, last rune)
	Size() int
	GlyphMaxSize() math.Size
	Measure(*TextBlock) math.Size
	Layout(*TextBlock) (offsets []math.Point)
}

type HorizontalAlignment int

type Image interface {
	Control
	Texture() Texture
	SetTexture(Texture)
	Canvas() Canvas
	SetCanvas(Canvas)
	BorderPen() Pen
	SetBorderPen(Pen)
	BackgroundBrush() Brush
	SetBackgroundBrush(Brush)
	ScalingMode() ScalingMode
	SetScalingMode(ScalingMode)
	SetExplicitSize(math.Size)
	AspectMode() AspectMode
	SetAspectMode(AspectMode)
	PixelAt(math.Point) (math.Point, bool) // TODO: Remove
}

type KeyStrokeEvent struct {
	Character rune
	Modifier  KeyboardModifier
}

type KeyboardController struct {
	// contains filtered or unexported fields
}

type KeyboardEvent struct {
	Key      KeyboardKey
	Modifier KeyboardModifier
}

type KeyboardKey int

type KeyboardModifier int

type Label interface {
	Control
	Text() string
	SetText(string)
	Font() Font
	SetFont(Font)
	Color() Color
	SetColor(Color)
	Multiline() bool
	SetMultiline(bool)
	SetHorizontalAlignment(HorizontalAlignment)
	HorizontalAlignment() HorizontalAlignment
	SetVerticalAlignment(VerticalAlignment)
	VerticalAlignment() VerticalAlignment
}

type LinearLayout interface {
	// LinearLayout extends the Control interface.
	Control

	// LinearLayout extends the Container interface.
	Container

	// Direction returns the direction of layout for this LinearLayout.
	Direction() Direction

	// Direction sets the direction of layout for this LinearLayout.
	SetDirection(Direction)

	// SizeMode returns the desired size behaviour for this LinearLayout.
	SizeMode() SizeMode

	// SetSizeMode sets the desired size behaviour for this LinearLayout.
	SetSizeMode(SizeMode)

	// HorizontalAlignment returns the alignment of the child Controls when laying
	// out TopToBottom or BottomToTop. It has no effect when the layout direction
	// is LeftToRight or RightToLeft.
	HorizontalAlignment() HorizontalAlignment

	// SetHorizontalAlignment sets the alignment of the child Controls when laying
	// out TopToBottom or BottomToTop. It has no effect when the layout direction
	// is LeftToRight or RightToLeft.
	SetHorizontalAlignment(HorizontalAlignment)

	// VerticalAlignment returns the alignment of the child Controls when laying
	// out LeftToRight or RightToLeft. It has no effect when the layout direction
	// is TopToBottom or BottomToTop.
	VerticalAlignment() VerticalAlignment

	// SetVerticalAlignment returns the alignment of the child Controls when
	// laying out LeftToRight or RightToLeft. It has no effect when the layout
	// direction is TopToBottom or BottomToTop.
	SetVerticalAlignment(VerticalAlignment)

	// BorderPen returns the Pen used to draw the LinearLayout's border.
	BorderPen() Pen

	// SetBorderPen sets the Pen used to draw the LinearLayout's border.
	SetBorderPen(Pen)

	// BackgroundBrush returns the Brush used to fill the LinearLayout's
	// background.
	BackgroundBrush() Brush

	// SetBackgroundBrush sets the Brush used to fill the LinearLayout's
	// background.
	SetBackgroundBrush(Brush)
}

type List interface {
	Focusable
	Parent
	Adapter() ListAdapter
	SetAdapter(ListAdapter)
	SetOrientation(Orientation)
	Orientation() Orientation
	BorderPen() Pen
	SetBorderPen(Pen)
	BackgroundBrush() Brush
	SetBackgroundBrush(Brush)
	ScrollTo(AdapterItem)
	IsItemVisible(AdapterItem) bool
	ItemControl(AdapterItem) Control
	Selected() AdapterItem
	Select(AdapterItem) bool
	OnSelectionChanged(func(AdapterItem)) EventSubscription
	OnItemClicked(func(MouseEvent, AdapterItem)) EventSubscription
}

type ListAdapter interface {
	// Count returns the total number of items.
	Count() int

	// ItemAt returns the AdapterItem for the item at index i. It is important
	// for the Adapter to return consistent AdapterItems for the same data, so
	// that selections can be persisted, or re-ordering animations can be played
	// when the dataset changes.
	// The AdapterItem returned must be equality-unique across all indices.
	ItemAt(index int) AdapterItem

	// ItemIndex returns the index of item, or -1 if the adapter does not contain
	// item.
	ItemIndex(item AdapterItem) int

	// Create returns a Control visualizing the item at the specified index.
	Create(theme Theme, index int) Control

	// Size returns the size that each of the item's controls will be displayed
	// at for the given theme.
	Size(Theme) math.Size

	// OnDataChanged registers f to be called when there is a partial change in
	// the items of the adapter. Scroll positions and selections should be
	// preserved if possible.
	// If recreateControls is true then each of the visible controls should be
	// recreated by re-calling Create().
	OnDataChanged(f func(recreateControls bool)) EventSubscription

	// OnDataReplaced registers f to be called when there is a complete
	// replacement of items in the adapter.
	OnDataReplaced(f func()) EventSubscription
}

type MouseButton int

type MouseController struct {
	// contains filtered or unexported fields
}

type MouseEvent struct {
	Button           MouseButton
	State            MouseState
	Point            math.Point // Local to the event receiver
	WindowPoint      math.Point
	Window           Window
	ScrollX, ScrollY int
	Modifier         KeyboardModifier
}

type MouseState int

type Orientation int

type PanelHolder interface {
	Control
	AddPanel(panel Control, name string)
	AddPanelAt(panel Control, name string, index int)
	RemovePanel(panel Control)
	Select(int)
	PanelCount() int
	PanelIndex(Control) int
	Panel(int) Control
	Tab(int) Control
}

type Parent interface {
	Children() Children
	Relayout()
	Redraw()
}

type ParentPoint struct {
	C Parent
	P math.Point
}

type Pen struct {
	Width float32
	Color Color
}

type Polygon []PolygonVertex

type PolygonVertex struct {
	Position      math.Point
	RoundedRadius float32
}

type ProgressBar interface {
	Control
	SetDesiredSize(math.Size)
	SetProgress(int)
	Progress() int
	SetTarget(int)
	Target() int
}

type ScalingMode int

type ScrollBar interface {
	Control

	OnScroll(func(from, to int)) EventSubscription
	ScrollPosition() (from, to int)
	SetScrollPosition(from, to int)
	ScrollLimit() int
	SetScrollLimit(l int)
	AutoHide() bool
	SetAutoHide(l bool)
	Orientation() Orientation
	SetOrientation(Orientation)
}

type ScrollLayout interface {
	Control
	Parent
	SetChild(Control)
	Child() Control
	SetScrollAxis(horizontal, vertical bool)
	ScrollAxis() (horizontal, vertical bool)
	BorderPen() Pen
	SetBorderPen(Pen)
	BackgroundBrush() Brush
	SetBackgroundBrush(Brush)
}

type SelectionTransform func(int) int

type SimpleEvent struct {
	EventBase
}

type SizeMode int

type SplitterLayout interface {
	Control
	Container
	ChildWeight(Control) float32
	SetChildWeight(Control, float32)
	Orientation() Orientation
	SetOrientation(Orientation)
}

type Stringer interface {
	String() string
}

type TableLayout interface {
	Control

	Parent

	SetGrid(rows, columns int)
	// Add child at cell {x, y} with size of {w, h}
	SetChildAt(x, y, w, h int, child Control) *Child
	RemoveChild(child Control)
}

type TextBlock struct {
	Runes     []rune
	AlignRect math.Rect
	H         HorizontalAlignment
	V         VerticalAlignment
}

type TextBox interface {
	Focusable
	OnSelectionChanged(func()) EventSubscription
	OnTextChanged(func([]TextBoxEdit)) EventSubscription
	Padding() math.Spacing
	SetPadding(math.Spacing)
	Runes() []rune
	Text() string
	SetText(string)
	Font() Font
	SetFont(Font)
	Multiline() bool
	SetMultiline(bool)
	DesiredWidth() int
	SetDesiredWidth(desiredWidth int)
	TextColor() Color
	SetTextColor(Color)
	Select(TextSelectionList)
	SelectAll()
	Carets() []int
	RuneIndexAt(p math.Point) (idx int, found bool)
	TextAt(s, e int) string
	WordAt(runeIndex int) string
	ScrollToLine(int)
	ScrollToRune(int)
	LineIndex(runeIndex int) int
	LineStart(line int) int
	LineEnd(line int) int
}

type TextBoxController struct {
	// contains filtered or unexported fields
}

type TextBoxEdit struct {
	At    int
	Delta int
}

type TextSelection struct {
	// contains filtered or unexported fields
}

type TextSelectionList []TextSelection

type Texture interface {
	Image() image.Image
	Size() math.Size
	SizePixels() math.Size
	FlipY() bool
	SetFlipY(bool)
}

type Theme interface {
	Driver() Driver
	DefaultFont() Font
	SetDefaultFont(Font)
	DefaultMonospaceFont() Font
	SetDefaultMonospaceFont(Font)
	CreateBubbleOverlay() BubbleOverlay
	CreateButton() Button
	CreateCodeEditor() CodeEditor
	CreateDropDownList() DropDownList
	CreateImage() Image
	CreateLabel() Label
	CreateLinearLayout() LinearLayout
	CreateList() List
	CreatePanelHolder() PanelHolder
	CreateProgressBar() ProgressBar
	CreateScrollBar() ScrollBar
	CreateScrollLayout() ScrollLayout
	CreateSplitterLayout() SplitterLayout
	CreateTableLayout() TableLayout
	CreateTextBox() TextBox
	CreateTree() Tree
	CreateWindow(width, height int, title string) Window
}

type ToolTipController struct {
	// contains filtered or unexported fields
}

type ToolTipCreator func(math.Point) Control

type Tree interface {
	Focusable

	// SetAdapter binds the specified TreeAdapter to this Tree control, replacing
	// any previously bound adapter.
	SetAdapter(TreeAdapter)

	// TreeAdapter returns the currently bound adapter.
	Adapter() TreeAdapter

	// Show makes the specified item visible, expanding the tree if necessary.
	Show(AdapterItem)

	// ExpandAll expands all tree nodes.
	ExpandAll()

	// CollapseAll collapses all tree nodes.
	CollapseAll()

	// Selected returns the currently selected item.
	Selected() AdapterItem

	// Select makes the specified item selected. The tree will not automatically
	// expand to the newly selected item. If the Tree does not contain the
	// specified item, then Select returns false and the previous selection
	// remains unaltered.
	Select(AdapterItem) bool

	// OnSelectionChanged registers the function f to be called when the selection
	// changes.
	OnSelectionChanged(f func(AdapterItem)) EventSubscription
}

type TreeAdapter interface {
	TreeNodeContainer

	// Size returns the size that each of the item's controls will be displayed
	// at for the given theme.
	Size(Theme) math.Size

	// OnDataChanged registers f to be called when there is a partial change in
	// the items of the adapter. Scroll positions and selections should be
	// preserved if possible.
	// If recreateControls is true then each of the visible controls should be
	// recreated by re-calling Create().
	OnDataChanged(f func(recreateControls bool)) EventSubscription

	// OnDataReplaced registers f to be called when there is a complete
	// replacement of items in the adapter.
	OnDataReplaced(f func()) EventSubscription
}

type TreeNode interface {
	TreeNodeContainer

	// Item returns the AdapterItem this node.
	// It is important for the TreeNode to return consistent AdapterItems for
	// the same data, so that selections can be persisted, or re-ordering
	// animations can be played when the dataset changes.
	// The AdapterItem returned must be equality-unique across the entire Adapter.
	Item() AdapterItem

	// Create returns a Control visualizing this node.
	Create(theme Theme) Control
}

type TreeNodeContainer interface {
	// Count returns the number of immediate child nodes.
	Count() int

	// Node returns the i'th child TreeNode.
	NodeAt(i int) TreeNode

	// ItemIndex returns the index of the child equal to item, or the index of the
	// child that indirectly contains item, or if the item is not found under this
	// node, -1.
	ItemIndex(item AdapterItem) int
}

type VerticalAlignment int

type Viewer interface {
	View(t Theme) Control
}

type Viewport interface {
	// SizeDips returns the size of the viewport in device-independent pixels.
	// The ratio of pixels to DIPs is based on the screen density and scale
	// adjustments made with the SetScale method.
	SizeDips() math.Size

	// SetSizeDips sets the size of the viewport in device-independent pixels.
	// The ratio of pixels to DIPs is based on the screen density and scale
	// adjustments made with the SetScale method.
	SetSizeDips(math.Size)

	// SizePixels returns the size of the viewport in pixels.
	SizePixels() math.Size

	// Scale returns the display scaling for this viewport.
	// A scale of 1 is unscaled, 2 is twice the regular scaling.
	Scale() float32

	// SetScale alters the display scaling for this viewport.
	// A scale of 1 is unscaled, 2 is twice the regular scaling.
	SetScale(float32)

	// Fullscreen returns true if the viewport was created full-screen.
	Fullscreen() bool

	// Title returns the title of the window.
	// This is usually the text displayed at the top of the window.
	Title() string

	// SetTitle changes the title of the window.
	SetTitle(string)

	// Position returns position of the window.
	Position() math.Point

	// SetPosition changes position of the window.
	SetPosition(math.Point)

	// Show makes the window visible.
	Show()

	// Hide makes the window invisible.
	Hide()

	// Close destroys the window.
	// Once the window is closed, no further calls should be made to it.
	Close()

	// SetCanvas changes the displayed content of the viewport to the specified
	// Canvas. As canvases are immutable once completed, every visual update of a
	// viewport will require a call to SetCanvas.
	SetCanvas(Canvas)

	// OnClose subscribes f to be called when the viewport closes.
	OnClose(f func()) EventSubscription

	// OnResize subscribes f to be called whenever the viewport changes size.
	OnResize(f func()) EventSubscription

	// OnMouseMove subscribes f to be called whenever the mouse cursor moves over
	// the viewport.
	OnMouseMove(f func(MouseEvent)) EventSubscription

	// OnMouseEnter subscribes f to be called whenever the mouse cursor enters the
	// viewport.
	OnMouseEnter(f func(MouseEvent)) EventSubscription

	// OnMouseEnter subscribes f to be called whenever the mouse cursor leaves the
	// viewport.
	OnMouseExit(f func(MouseEvent)) EventSubscription

	// OnMouseDown subscribes f to be called whenever a mouse button is pressed
	// while the cursor is inside the viewport.
	OnMouseDown(f func(MouseEvent)) EventSubscription

	// OnMouseUp subscribes f to be called whenever a mouse button is released
	// while the cursor is inside the viewport.
	OnMouseUp(f func(MouseEvent)) EventSubscription

	// OnMouseScroll subscribes f to be called whenever the mouse scroll wheel
	// turns while the cursor is inside the viewport.
	OnMouseScroll(f func(MouseEvent)) EventSubscription

	// OnKeyDown subscribes f to be called whenever a keyboard key is pressed
	// while the viewport has focus.
	OnKeyDown(f func(KeyboardEvent)) EventSubscription

	// OnKeyUp subscribes f to be called whenever a keyboard key is released
	// while the viewport has focus.
	OnKeyUp(f func(KeyboardEvent)) EventSubscription

	// OnKeyRepeat subscribes f to be called whenever a keyboard key-repeat event
	// is raised while the viewport has focus.
	OnKeyRepeat(f func(KeyboardEvent)) EventSubscription

	// OnKeyStroke subscribes f to be called whenever a keyboard key-stroke event
	// is raised while the viewport has focus.
	OnKeyStroke(f func(KeyStrokeEvent)) EventSubscription
}

type Window interface {
	Container

	// Title returns the title of the window.
	// This is usually the text displayed at the top of the window.
	Title() string

	// SetTitle changes the title of the window.
	SetTitle(string)

	// Scale returns the display scaling for this window.
	// A scale of 1 is unscaled, 2 is twice the regular scaling.
	Scale() float32

	// SetScale alters the display scaling for this window.
	// A scale of 1 is unscaled, 2 is twice the regular scaling.
	SetScale(float32)

	// Position returns position of the window.
	Position() math.Point

	// SetPosition changes position of the window.
	SetPosition(math.Point)

	// Fullscreen returns true if the window is currently full-screen.
	Fullscreen() bool

	// SetFullscreen makes the window either full-screen or windowed.
	SetFullscreen(bool)

	// Show makes the window visible.
	Show()

	// Hide makes the window invisible.
	Hide()

	// Close destroys the window.
	// Once the window is closed, no further calls should be made to it.
	Close()

	// Focus returns the control currently with focus.
	Focus() Focusable

	// SetFocus gives the specified control Focus, returning true on success or
	// false if the control cannot be given focus.
	SetFocus(Control) bool

	// BackgroundBrush returns the brush used to draw the window background.
	BackgroundBrush() Brush

	// SetBackgroundBrush sets the brush used to draw the window background.
	SetBackgroundBrush(Brush)

	// BorderPen returns the pen used to draw the window border.
	BorderPen() Pen

	// SetBorderPen sets the pen used to draw the window border.
	SetBorderPen(Pen)

	Click(MouseEvent)
	DoubleClick(MouseEvent)
	KeyPress(KeyboardEvent)
	KeyStroke(KeyStrokeEvent)

	// Events
	OnClose(func()) EventSubscription
	OnResize(func()) EventSubscription
	OnClick(func(MouseEvent)) EventSubscription
	OnDoubleClick(func(MouseEvent)) EventSubscription
	OnMouseMove(func(MouseEvent)) EventSubscription
	OnMouseEnter(func(MouseEvent)) EventSubscription
	OnMouseExit(func(MouseEvent)) EventSubscription
	OnMouseDown(func(MouseEvent)) EventSubscription
	OnMouseUp(func(MouseEvent)) EventSubscription
	OnMouseScroll(func(MouseEvent)) EventSubscription
	OnKeyDown(func(KeyboardEvent)) EventSubscription
	OnKeyUp(func(KeyboardEvent)) EventSubscription
	OnKeyRepeat(func(KeyboardEvent)) EventSubscription
	OnKeyStroke(func(KeyStrokeEvent)) EventSubscription
}