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Merge branch 'main' of git.tebibyte.media:sashakoshka/tomo

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This commit is contained in:
Sasha Koshka 2023-03-16 00:45:50 -04:00
commit d57db6327d
30 changed files with 490 additions and 547 deletions
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44
backends/x/event.go
View File

@ -14,7 +14,7 @@ type scrollSum struct {
const scrollDistance = 16
func (sum *scrollSum) add (button xproto.Button, window *Window, state uint16) {
func (sum *scrollSum) add (button xproto.Button, window *window, state uint16) {
shift :=
(state & xproto.ModMaskShift) > 0 ||
(state & window.backend.modifierMasks.shiftLock) > 0
@ -44,7 +44,7 @@ func (sum *scrollSum) add (button xproto.Button, window *Window, state uint16) {
}
func (window *Window) handleExpose (
func (window *window) handleExpose (
connection *xgbutil.XUtil,
event xevent.ExposeEvent,
) {
@ -52,7 +52,7 @@ func (window *Window) handleExpose (
window.pushRegion(region)
}
func (window *Window) handleConfigureNotify (
func (window *window) handleConfigureNotify (
connection *xgbutil.XUtil,
event xevent.ConfigureNotifyEvent,
) {
@ -81,7 +81,7 @@ func (window *Window) handleConfigureNotify (
}
}
func (window *Window) exposeEventFollows (event xproto.ConfigureNotifyEvent) (found bool) {
func (window *window) exposeEventFollows (event xproto.ConfigureNotifyEvent) (found bool) {
nextEvents := xevent.Peek(window.backend.connection)
if len(nextEvents) > 0 {
untypedEvent := nextEvents[0]
@ -97,7 +97,7 @@ func (window *Window) exposeEventFollows (event xproto.ConfigureNotifyEvent) (fo
return false
}
func (window *Window) modifiersFromState (
func (window *window) modifiersFromState (
state uint16,
) (
modifiers input.Modifiers,
@ -114,7 +114,7 @@ func (window *Window) modifiersFromState (
}
}
func (window *Window) handleKeyPress (
func (window *window) handleKeyPress (
connection *xgbutil.XUtil,
event xevent.KeyPressEvent,
) {
@ -141,7 +141,7 @@ func (window *Window) handleKeyPress (
}
}
func (window *Window) handleKeyRelease (
func (window *window) handleKeyRelease (
connection *xgbutil.XUtil,
event xevent.KeyReleaseEvent,
) {
@ -175,23 +175,25 @@ func (window *Window) handleKeyRelease (
}
}
func (window *Window) handleButtonPress (
func (window *window) handleButtonPress (
connection *xgbutil.XUtil,
event xevent.ButtonPressEvent,
) {
if window.child == nil { return }
if child, ok := window.child.(elements.MouseTarget); ok {
buttonEvent := *event.ButtonPressEvent
if buttonEvent.Detail >= 4 && buttonEvent.Detail <= 7 {
buttonEvent := *event.ButtonPressEvent
if buttonEvent.Detail >= 4 && buttonEvent.Detail <= 7 {
if child, ok := window.child.(elements.ScrollTarget); ok {
sum := scrollSum { }
sum.add(buttonEvent.Detail, window, buttonEvent.State)
window.compressScrollSum(buttonEvent, &sum)
child.HandleMouseScroll (
child.HandleScroll (
int(buttonEvent.EventX),
int(buttonEvent.EventY),
float64(sum.x), float64(sum.y))
} else {
}
} else {
if child, ok := window.child.(elements.MouseTarget); ok {
child.HandleMouseDown (
int(buttonEvent.EventX),
int(buttonEvent.EventY),
@ -201,7 +203,7 @@ func (window *Window) handleButtonPress (
}
func (window *Window) handleButtonRelease (
func (window *window) handleButtonRelease (
connection *xgbutil.XUtil,
event xevent.ButtonReleaseEvent,
) {
@ -217,21 +219,21 @@ func (window *Window) handleButtonRelease (
}
}
func (window *Window) handleMotionNotify (
func (window *window) handleMotionNotify (
connection *xgbutil.XUtil,
event xevent.MotionNotifyEvent,
) {
if window.child == nil { return }
if child, ok := window.child.(elements.MouseTarget); ok {
if child, ok := window.child.(elements.MotionTarget); ok {
motionEvent := window.compressMotionNotify(*event.MotionNotifyEvent)
child.HandleMouseMove (
child.HandleMotion (
int(motionEvent.EventX),
int(motionEvent.EventY))
}
}
func (window *Window) compressExpose (
func (window *window) compressExpose (
firstEvent xproto.ExposeEvent,
) (
lastEvent xproto.ExposeEvent,
@ -268,7 +270,7 @@ func (window *Window) compressExpose (
return
}
func (window *Window) compressConfigureNotify (
func (window *window) compressConfigureNotify (
firstEvent xproto.ConfigureNotifyEvent,
) (
lastEvent xproto.ConfigureNotifyEvent,
@ -296,7 +298,7 @@ func (window *Window) compressConfigureNotify (
return
}
func (window *Window) compressScrollSum (
func (window *window) compressScrollSum (
firstEvent xproto.ButtonPressEvent,
sum *scrollSum,
) {
@ -323,7 +325,7 @@ func (window *Window) compressScrollSum (
return
}
func (window *Window) compressMotionNotify (
func (window *window) compressMotionNotify (
firstEvent xproto.MotionNotifyEvent,
) (
lastEvent xproto.MotionNotifyEvent,

122
backends/x/window.go
View File

@ -14,7 +14,7 @@ import "git.tebibyte.media/sashakoshka/tomo/canvas"
import "git.tebibyte.media/sashakoshka/tomo/elements"
// import "runtime/debug"
type Window struct {
type window struct {
backend *Backend
xWindow *xwindow.Window
xCanvas *xgraphics.Image
@ -40,7 +40,7 @@ func (backend *Backend) NewWindow (
) {
if backend == nil { panic("nil backend") }
window := &Window { backend: backend }
window := &window { backend: backend }
window.xWindow, err = xwindow.Generate(backend.connection)
if err != nil { return }
@ -90,37 +90,51 @@ func (backend *Backend) NewWindow (
return
}
func (window *Window) Adopt (child elements.Element) {
func (window *window) NotifyMinimumSizeChange (child elements.Element) {
window.childMinimumSizeChangeCallback(child.MinimumSize())
}
func (window *window) RequestFocus (
child elements.Focusable,
) (
granted bool,
) {
return true
}
func (window *window) RequestFocusNext (child elements.Focusable) {
if child, ok := window.child.(elements.Focusable); ok {
if !child.HandleFocus(input.KeynavDirectionForward) {
child.HandleUnfocus()
}
}
}
func (window *window) RequestFocusPrevious (child elements.Focusable) {
if child, ok := window.child.(elements.Focusable); ok {
if !child.HandleFocus(input.KeynavDirectionBackward) {
child.HandleUnfocus()
}
}
}
func (window *window) Adopt (child elements.Element) {
// disown previous child
if window.child != nil {
window.child.OnDamage(nil)
window.child.OnMinimumSizeChange(nil)
}
if previousChild, ok := window.child.(elements.Focusable); ok {
previousChild.OnFocusRequest(nil)
previousChild.OnFocusMotionRequest(nil)
if previousChild.Focused() {
previousChild.HandleUnfocus()
}
window.child.SetParent(nil)
window.child.DrawTo(nil, image.Rectangle { }, nil)
}
// adopt new child
window.child = child
child.SetParent(window)
if newChild, ok := child.(elements.Themeable); ok {
newChild.SetTheme(window.theme)
}
if newChild, ok := child.(elements.Configurable); ok {
newChild.SetConfig(window.config)
}
if newChild, ok := child.(elements.Focusable); ok {
newChild.OnFocusRequest(window.childSelectionRequestCallback)
}
if child != nil {
child.OnDamage(window.childDrawCallback)
child.OnMinimumSizeChange (func () {
window.childMinimumSizeChangeCallback (
child.MinimumSize())
})
if !window.childMinimumSizeChangeCallback(child.MinimumSize()) {
window.resizeChildToFit()
window.redrawChildEntirely()
@ -128,19 +142,19 @@ func (window *Window) Adopt (child elements.Element) {
}
}
func (window *Window) Child () (child elements.Element) {
func (window *window) Child () (child elements.Element) {
child = window.child
return
}
func (window *Window) SetTitle (title string) {
func (window *window) SetTitle (title string) {
ewmh.WmNameSet (
window.backend.connection,
window.xWindow.Id,
title)
}
func (window *Window) SetIcon (sizes []image.Image) {
func (window *window) SetIcon (sizes []image.Image) {
wmIcons := []ewmh.WmIcon { }
for _, icon := range sizes {
@ -179,7 +193,7 @@ func (window *Window) SetIcon (sizes []image.Image) {
wmIcons)
}
func (window *Window) Show () {
func (window *window) Show () {
if window.child == nil {
window.xCanvas.For (func (x, y int) xgraphics.BGRA {
return xgraphics.BGRA { }
@ -191,35 +205,35 @@ func (window *Window) Show () {
window.xWindow.Map()
}
func (window *Window) Hide () {
func (window *window) Hide () {
window.xWindow.Unmap()
}
func (window *Window) Close () {
func (window *window) Close () {
if window.onClose != nil { window.onClose() }
delete(window.backend.windows, window.xWindow.Id)
window.xWindow.Destroy()
}
func (window *Window) OnClose (callback func ()) {
func (window *window) OnClose (callback func ()) {
window.onClose = callback
}
func (window *Window) SetTheme (theme theme.Theme) {
func (window *window) SetTheme (theme theme.Theme) {
window.theme = theme
if child, ok := window.child.(elements.Themeable); ok {
child.SetTheme(theme)
}
}
func (window *Window) SetConfig (config config.Config) {
func (window *window) SetConfig (config config.Config) {
window.config = config
if child, ok := window.child.(elements.Configurable); ok {
child.SetConfig(config)
}
}
func (window *Window) reallocateCanvas () {
func (window *window) reallocateCanvas () {
window.canvas.Reallocate(window.metrics.width, window.metrics.height)
previousWidth, previousHeight := 0, 0
@ -250,23 +264,28 @@ func (window *Window) reallocateCanvas () {
}
func (window *Window) redrawChildEntirely () {
window.pushRegion(window.paste(window.canvas))
func (window *window) redrawChildEntirely () {
window.paste(window.canvas.Bounds())
window.pushRegion(window.canvas.Bounds())
}
func (window *Window) resizeChildToFit () {
func (window *window) resizeChildToFit () {
window.skipChildDrawCallback = true
window.child.DrawTo(window.canvas, window.canvas.Bounds())
window.child.DrawTo (
window.canvas,
window.canvas.Bounds(),
window.childDrawCallback)
window.skipChildDrawCallback = false
}
func (window *Window) childDrawCallback (region canvas.Canvas) {
func (window *window) childDrawCallback (region image.Rectangle) {
if window.skipChildDrawCallback { return }
window.pushRegion(window.paste(region))
window.paste(region)
window.pushRegion(region)
}
func (window *Window) paste (canvas canvas.Canvas) (updatedRegion image.Rectangle) {
func (window *window) paste (region image.Rectangle) {
canvas := canvas.Cut(window.canvas, region)
data, stride := canvas.Buffer()
bounds := canvas.Bounds().Intersect(window.xCanvas.Bounds())
@ -286,11 +305,9 @@ func (window *Window) paste (canvas canvas.Canvas) (updatedRegion image.Rectangl
dstData[index + 3] = rgba.A
}
}
return bounds
}
func (window *Window) childMinimumSizeChangeCallback (width, height int) (resized bool) {
func (window *window) childMinimumSizeChangeCallback (width, height int) (resized bool) {
icccm.WmNormalHintsSet (
window.backend.connection,
window.xWindow.Id,
@ -312,28 +329,7 @@ func (window *Window) childMinimumSizeChangeCallback (width, height int) (resize
return false
}
func (window *Window) childSelectionRequestCallback () (granted bool) {
if _, ok := window.child.(elements.Focusable); ok {
return true
}
return false
}
func (window *Window) childSelectionMotionRequestCallback (
direction input.KeynavDirection,
) (
granted bool,
) {
if child, ok := window.child.(elements.Focusable); ok {
if !child.HandleFocus(direction) {
child.HandleUnfocus()
}
return true
}
return true
}
func (window *Window) pushRegion (region image.Rectangle) {
func (window *window) pushRegion (region image.Rectangle) {
if window.xCanvas == nil { panic("whoopsie!!!!!!!!!!!!!!") }
image, ok := window.xCanvas.SubImage(region).(*xgraphics.Image)
if ok {

6
backends/x/x.go
View File

@ -30,7 +30,7 @@ type Backend struct {
theme theme.Theme
config config.Config
windows map[xproto.Window] *Window
windows map[xproto.Window] *window
open bool
}
@ -38,7 +38,7 @@ type Backend struct {
// NewBackend instantiates an X backend.
func NewBackend () (output tomo.Backend, err error) {
backend := &Backend {
windows: map[xproto.Window] *Window { },
windows: map[xproto.Window] *window { },
doChannel: make(chan func (), 0),
theme: theme.Default { },
config: config.Default { },
@ -79,7 +79,7 @@ func (backend *Backend) Stop () {
if !backend.open { return }
backend.open = false
toClose := []*Window { }
toClose := []*window { }
for _, window := range backend.windows {
toClose = append(toClose, window)
}

7
elements/basic/button.go
View File

@ -35,9 +35,9 @@ type Button struct {
func NewButton (text string) (element *Button) {
element = &Button { showText: true }
element.theme.Case = theme.C("basic", "button")
element.Core, element.core = core.NewCore(element.drawAll)
element.Core, element.core = core.NewCore(element, element.drawAll)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore(element.drawAndPush)
element.focusableControl = core.NewFocusableCore(element.core, element.drawAndPush)
element.SetText(text)
return
}
@ -61,9 +61,6 @@ func (element *Button) HandleMouseUp (x, y int, button input.Button) {
element.drawAndPush()
}
func (element *Button) HandleMouseMove (x, y int) { }
func (element *Button) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *Button) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
if !element.Enabled() { return }
if key == input.KeyEnter {

7
elements/basic/checkbox.go
View File

@ -29,9 +29,9 @@ type Checkbox struct {
func NewCheckbox (text string, checked bool) (element *Checkbox) {
element = &Checkbox { checked: checked }
element.theme.Case = theme.C("basic", "checkbox")
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore(element.redo)
element.focusableControl = core.NewFocusableCore(element.core, element.redo)
element.SetText(text)
return
}
@ -65,9 +65,6 @@ func (element *Checkbox) HandleMouseUp (x, y int, button input.Button) {
}
}
func (element *Checkbox) HandleMouseMove (x, y int) { }
func (element *Checkbox) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *Checkbox) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
if key == input.KeyEnter {
element.pressed = true

80
elements/basic/container.go
View File

@ -32,8 +32,8 @@ type Container struct {
func NewContainer (layout layouts.Layout) (element *Container) {
element = &Container { }
element.theme.Case = theme.C("basic", "container")
element.Core, element.core = core.NewCore(element.redoAll)
element.Propagator = core.NewPropagator(element)
element.Core, element.core = core.NewCore(element, element.redoAll)
element.Propagator = core.NewPropagator(element, element.core)
element.SetLayout(layout)
return
}
@ -51,33 +51,13 @@ func (element *Container) SetLayout (layout layouts.Layout) {
// the element will expand (instead of contract to its minimum size), in
// whatever way is defined by the current layout.
func (element *Container) Adopt (child elements.Element, expand bool) {
// set event handlers
if child0, ok := child.(elements.Themeable); ok {
child0.SetTheme(element.theme.Theme)
}
if child0, ok := child.(elements.Configurable); ok {
child0.SetConfig(element.config.Config)
}
child.OnDamage (func (region canvas.Canvas) {
element.core.DamageRegion(region.Bounds())
})
child.OnMinimumSizeChange (func () {
// TODO: this could probably stand to be more efficient. I mean
// seriously?
element.updateMinimumSize()
element.redoAll()
element.core.DamageAll()
})
if child0, ok := child.(elements.Focusable); ok {
child0.OnFocusRequest (func () (granted bool) {
return element.childFocusRequestCallback(child0)
})
child0.OnFocusMotionRequest (
func (direction input.KeynavDirection) (granted bool) {
if element.onFocusMotionRequest == nil { return }
return element.onFocusMotionRequest(direction)
})
}
child.SetParent(element)
// add child
element.children = append (element.children, layouts.LayoutEntry {
@ -136,14 +116,12 @@ func (element *Container) Disown (child elements.Element) {
}
func (element *Container) clearChildEventHandlers (child elements.Element) {
child.DrawTo(nil, image.Rectangle { })
child.OnDamage(nil)
child.OnMinimumSizeChange(nil)
if child0, ok := child.(elements.Focusable); ok {
child0.OnFocusRequest(nil)
child0.OnFocusMotionRequest(nil)
if child0.Focused() {
child0.HandleUnfocus()
child.DrawTo(nil, image.Rectangle { }, nil)
child.SetParent(nil)
if child, ok := child.(elements.Focusable); ok {
if child.Focused() {
child.HandleUnfocus()
}
}
}
@ -200,7 +178,7 @@ func (element *Container) redoAll () {
// remove child canvasses so that any operations done in here will not
// cause a child to draw to a wack ass canvas.
for _, entry := range element.children {
entry.DrawTo(nil, entry.Bounds)
entry.DrawTo(nil, entry.Bounds, nil)
}
// do a layout
@ -220,10 +198,20 @@ func (element *Container) redoAll () {
for _, entry := range element.children {
entry.DrawTo (
canvas.Cut(element.core, entry.Bounds),
entry.Bounds)
entry.Bounds, func (region image.Rectangle) {
element.core.DamageRegion(region)
})
}
}
// NotifyMinimumSizeChange notifies the container that the minimum size of a
// child element has changed.
func (element *Container) NotifyMinimumSizeChange (child elements.Element) {
element.updateMinimumSize()
element.redoAll()
element.core.DamageAll()
}
// SetTheme sets the element's theme.
func (element *Container) SetTheme (new theme.Theme) {
if new == element.theme.Theme { return }
@ -241,32 +229,6 @@ func (element *Container) SetConfig (new config.Config) {
element.redoAll()
}
func (element *Container) OnFocusRequest (callback func () (granted bool)) {
element.onFocusRequest = callback
element.Propagator.OnFocusRequest(callback)
}
func (element *Container) OnFocusMotionRequest (
callback func (direction input.KeynavDirection) (granted bool),
) {
element.onFocusMotionRequest = callback
element.Propagator.OnFocusMotionRequest(callback)
}
func (element *Container) childFocusRequestCallback (
child elements.Focusable,
) (
granted bool,
) {
if element.onFocusRequest != nil && element.onFocusRequest() {
element.Propagator.HandleUnfocus()
element.Propagator.HandleFocus(input.KeynavDirectionNeutral)
return true
} else {
return false
}
}
func (element *Container) updateMinimumSize () {
margin := element.theme.Margin(theme.PatternBackground)
padding := element.theme.Padding(theme.PatternBackground)

113
elements/basic/documentContainer.go
View File

@ -1,7 +1,6 @@
package basicElements
import "image"
import "git.tebibyte.media/sashakoshka/tomo/input"
import "git.tebibyte.media/sashakoshka/tomo/theme"
import "git.tebibyte.media/sashakoshka/tomo/config"
import "git.tebibyte.media/sashakoshka/tomo/canvas"
@ -22,9 +21,7 @@ type DocumentContainer struct {
config config.Wrapped
theme theme.Wrapped
onFocusRequest func () (granted bool)
onFocusMotionRequest func (input.KeynavDirection) (granted bool)
onScrollBoundsChange func ()
}
@ -32,8 +29,8 @@ type DocumentContainer struct {
func NewDocumentContainer () (element *DocumentContainer) {
element = &DocumentContainer { }
element.theme.Case = theme.C("basic", "documentContainer")
element.Core, element.core = core.NewCore(element.redoAll)
element.Propagator = core.NewPropagator(element)
element.Core, element.core = core.NewCore(element, element.redoAll)
element.Propagator = core.NewPropagator(element, element.core)
return
}
@ -46,35 +43,14 @@ func (element *DocumentContainer) Adopt (child elements.Element) {
if child0, ok := child.(elements.Configurable); ok {
child0.SetConfig(element.config.Config)
}
child.OnDamage (func (region canvas.Canvas) {
element.core.DamageRegion(region.Bounds())
})
child.OnMinimumSizeChange (func () {
element.redoAll()
element.core.DamageAll()
})
if child0, ok := child.(elements.Flexible); ok {
child0.OnFlexibleHeightChange (func () {
element.redoAll()
element.core.DamageAll()
})
}
if child0, ok := child.(elements.Focusable); ok {
child0.OnFocusRequest (func () (granted bool) {
return element.childFocusRequestCallback(child0)
})
child0.OnFocusMotionRequest (
func (direction input.KeynavDirection) (granted bool) {
if element.onFocusMotionRequest == nil { return }
return element.onFocusMotionRequest(direction)
})
}
// add child
element.children = append (element.children, layouts.LayoutEntry {
Element: child,
})
child.SetParent(element)
// refresh stale data
element.reflectChildProperties()
if element.core.HasImage() && !element.warping {
@ -123,14 +99,12 @@ func (element *DocumentContainer) Disown (child elements.Element) {
}
func (element *DocumentContainer) clearChildEventHandlers (child elements.Element) {
child.DrawTo(nil, image.Rectangle { })
child.OnDamage(nil)
child.OnMinimumSizeChange(nil)
if child0, ok := child.(elements.Focusable); ok {
child0.OnFocusRequest(nil)
child0.OnFocusMotionRequest(nil)
if child0.Focused() {
child0.HandleUnfocus()
child.DrawTo(nil, image.Rectangle { }, nil)
child.SetParent(nil)
if child, ok := child.(elements.Focusable); ok {
if child.Focused() {
child.HandleUnfocus()
}
}
}
@ -204,14 +178,14 @@ func (element *DocumentContainer) redoAll () {
artist.DrawShatter(element.core, pattern, element.Bounds(), rocks...)
element.partition()
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
func (element *DocumentContainer) partition () {
for _, entry := range element.children {
entry.DrawTo(nil, entry.Bounds)
entry.DrawTo(nil, entry.Bounds, nil)
}
// cut our canvas up and give peices to child elements
@ -219,11 +193,30 @@ func (element *DocumentContainer) partition () {
if entry.Bounds.Overlaps(element.Bounds()) {
entry.DrawTo (
canvas.Cut(element.core, entry.Bounds),
entry.Bounds)
entry.Bounds, func (region image.Rectangle) {
element.core.DamageRegion(region)
})
}
}
}
// NotifyMinimumSizeChange notifies the container that the minimum size of a
// child element has changed.
func (element *DocumentContainer) NotifyMinimumSizeChange (child elements.Element) {
element.redoAll()
element.core.DamageAll()
}
// NotifyFlexibleHeightChange notifies the parent that the parameters
// affecting a child's flexible height have changed. This method is
// expected to be called by flexible child element when their content
// changes.
func (element *DocumentContainer) NotifyFlexibleHeightChange (child elements.Flexible) {
element.redoAll()
element.core.DamageAll()
}
// SetTheme sets the element's theme.
func (element *DocumentContainer) SetTheme (new theme.Theme) {
if new == element.theme.Theme { return }
@ -239,18 +232,6 @@ func (element *DocumentContainer) SetConfig (new config.Config) {
element.redoAll()
}
func (element *DocumentContainer) OnFocusRequest (callback func () (granted bool)) {
element.onFocusRequest = callback
element.Propagator.OnFocusRequest(callback)
}
func (element *DocumentContainer) OnFocusMotionRequest (
callback func (direction input.KeynavDirection) (granted bool),
) {
element.onFocusMotionRequest = callback
element.Propagator.OnFocusMotionRequest(callback)
}
// ScrollContentBounds returns the full content size of the element.
func (element *DocumentContainer) ScrollContentBounds () image.Rectangle {
return element.contentBounds
@ -282,6 +263,12 @@ func (element *DocumentContainer) ScrollTo (position image.Point) {
}
}
// OnScrollBoundsChange sets a function to be called when the element's viewport
// bounds, content bounds, or scroll axes change.
func (element *DocumentContainer) OnScrollBoundsChange (callback func ()) {
element.onScrollBoundsChange = callback
}
func (element *DocumentContainer) maxScrollHeight () (height int) {
padding := element.theme.Padding(theme.PatternSunken)
viewportHeight := element.Bounds().Dy() - padding.Vertical()
@ -295,12 +282,6 @@ func (element *DocumentContainer) ScrollAxes () (horizontal, vertical bool) {
return false, true
}
// OnScrollBoundsChange sets a function to be called when the element's
// ScrollContentBounds, ScrollViewportBounds, or ScrollAxes are changed.
func (element *DocumentContainer) OnScrollBoundsChange(callback func()) {
element.onScrollBoundsChange = callback
}
func (element *DocumentContainer) reflectChildProperties () {
focusable := false
for _, entry := range element.children {
@ -315,20 +296,6 @@ func (element *DocumentContainer) reflectChildProperties () {
}
}
func (element *DocumentContainer) childFocusRequestCallback (
child elements.Focusable,
) (
granted bool,
) {
if element.onFocusRequest != nil && element.onFocusRequest() {
element.Propagator.HandleUnfocus()
element.Propagator.HandleFocus(input.KeynavDirectionNeutral)
return true
} else {
return false
}
}
func (element *DocumentContainer) doLayout () {
margin := element.theme.Margin(theme.PatternBackground)
padding := element.theme.Padding(theme.PatternBackground)

2
elements/basic/icon.go
View File

@ -19,7 +19,7 @@ func NewIcon (id theme.Icon, size theme.IconSize) (element *Icon) {
size: size,
}
element.theme.Case = theme.C("basic", "icon")
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.updateMinimumSize()
return
}

2
elements/basic/image.go
View File

@ -13,7 +13,7 @@ type Image struct {
func NewImage (image image.Image) (element *Image) {
element = &Image { buffer: canvas.FromImage(image) }
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
bounds := image.Bounds()
element.core.SetMinimumSize(bounds.Dx(), bounds.Dy())
return

2
elements/basic/label.go
View File

@ -29,7 +29,7 @@ type Label struct {
func NewLabel (text string, wrap bool) (element *Label) {
element = &Label { }
element.theme.Case = theme.C("basic", "label")
element.Core, element.core = core.NewCore(element.handleResize)
element.Core, element.core = core.NewCore(element, element.handleResize)
element.SetWrap(wrap)
element.SetText(text)
return

49
elements/basic/list.go
View File

@ -7,6 +7,7 @@ import "git.tebibyte.media/sashakoshka/tomo/theme"
import "git.tebibyte.media/sashakoshka/tomo/config"
import "git.tebibyte.media/sashakoshka/tomo/canvas"
import "git.tebibyte.media/sashakoshka/tomo/artist"
import "git.tebibyte.media/sashakoshka/tomo/elements"
import "git.tebibyte.media/sashakoshka/tomo/elements/core"
// List is an element that contains several objects that a user can select.
@ -29,17 +30,17 @@ type List struct {
config config.Wrapped
theme theme.Wrapped
onNoEntrySelected func ()
onScrollBoundsChange func ()
onNoEntrySelected func ()
}
// NewList creates a new list element with the specified entries.
func NewList (entries ...ListEntry) (element *List) {
element = &List { selectedEntry: -1 }
element.theme.Case = theme.C("basic", "list")
element.Core, element.core = core.NewCore(element.handleResize)
element.Core, element.core = core.NewCore(element, element.handleResize)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore (func () {
element.focusableControl = core.NewFocusableCore (element.core, func () {
if element.core.HasImage () {
element.draw()
element.core.DamageAll()
@ -64,8 +65,8 @@ func (element *List) handleResize () {
element.scroll = element.maxScrollHeight()
}
element.draw()
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -102,8 +103,8 @@ func (element *List) redo () {
element.draw()
element.core.DamageAll()
}
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -147,7 +148,7 @@ func (element *List) HandleMouseUp (x, y int, button input.Button) {
element.pressed = false
}
func (element *List) HandleMouseMove (x, y int) {
func (element *List) HandleMotion (x, y int) {
if element.pressed {
if element.selectUnderMouse(x, y) && element.core.HasImage() {
element.draw()
@ -156,8 +157,6 @@ func (element *List) HandleMouseMove (x, y int) {
}
}
func (element *List) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *List) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
if !element.Enabled() { return }
@ -210,8 +209,8 @@ func (element *List) ScrollTo (position image.Point) {
element.draw()
element.core.DamageAll()
}
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -233,10 +232,6 @@ func (element *List) maxScrollHeight () (height int) {
return
}
func (element *List) OnScrollBoundsChange (callback func ()) {
element.onScrollBoundsChange = callback
}
// OnNoEntrySelected sets a function to be called when the user chooses to
// deselect the current selected entry by clicking on empty space within the
// list or by pressing the escape key.
@ -244,6 +239,12 @@ func (element *List) OnNoEntrySelected (callback func ()) {
element.onNoEntrySelected = callback
}
// OnScrollBoundsChange sets a function to be called when the element's viewport
// bounds, content bounds, or scroll axes change.
func (element *List) OnScrollBoundsChange (callback func ()) {
element.onScrollBoundsChange = callback
}
// CountEntries returns the amount of entries in the list.
func (element *List) CountEntries () (count int) {
return len(element.entries)
@ -263,8 +264,8 @@ func (element *List) Append (entry ListEntry) {
element.draw()
element.core.DamageAll()
}
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -296,8 +297,8 @@ func (element *List) Insert (index int, entry ListEntry) {
element.draw()
element.core.DamageAll()
}
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -319,8 +320,8 @@ func (element *List) Remove (index int) {
element.draw()
element.core.DamageAll()
}
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -341,8 +342,8 @@ func (element *List) Replace (index int, entry ListEntry) {
element.draw()
element.core.DamageAll()
}
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}

2
elements/basic/progressbar.go
View File

@ -20,7 +20,7 @@ type ProgressBar struct {
func NewProgressBar (progress float64) (element *ProgressBar) {
element = &ProgressBar { progress: progress }
element.theme.Case = theme.C("basic", "progressBar")
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
return
}

6
elements/basic/scrollbar.go
View File

@ -49,7 +49,7 @@ func NewScrollBar (vertical bool) (element *ScrollBar) {
} else {
element.theme.Case = theme.C("basic", "scrollBarVertical")
}
element.Core, element.core = core.NewCore(element.handleResize)
element.Core, element.core = core.NewCore(element, element.handleResize)
element.updateMinimumSize()
return
}
@ -115,13 +115,13 @@ func (element *ScrollBar) HandleMouseUp (x, y int, button input.Button) {
}
}
func (element *ScrollBar) HandleMouseMove (x, y int) {
func (element *ScrollBar) HandleMotion (x, y int) {
if element.dragging {
element.dragTo(image.Pt(x, y))
}
}
func (element *ScrollBar) HandleMouseScroll (x, y int, deltaX, deltaY float64) {
func (element *ScrollBar) HandleScroll (x, y int, deltaX, deltaY float64) {
if element.vertical {
element.scrollBy(int(deltaY))
} else {

133
elements/basic/scrollcontainer.go
View File

@ -31,12 +31,12 @@ type ScrollContainer struct {
func NewScrollContainer (horizontal, vertical bool) (element *ScrollContainer) {
element = &ScrollContainer { }
element.theme.Case = theme.C("basic", "scrollContainer")
element.Core, element.core = core.NewCore(element.redoAll)
element.Propagator = core.NewPropagator(element)
element.Core, element.core = core.NewCore(element, element.redoAll)
element.Propagator = core.NewPropagator(element, element.core)
if horizontal {
element.horizontal = NewScrollBar(false)
element.setChildEventHandlers(element.horizontal)
element.setUpChild(element.horizontal)
element.horizontal.OnScroll (func (viewport image.Point) {
if element.child != nil {
element.child.ScrollTo(viewport)
@ -50,7 +50,7 @@ func NewScrollContainer (horizontal, vertical bool) (element *ScrollContainer) {
}
if vertical {
element.vertical = NewScrollBar(true)
element.setChildEventHandlers(element.vertical)
element.setUpChild(element.vertical)
element.vertical.OnScroll (func (viewport image.Point) {
if element.child != nil {
element.child.ScrollTo(viewport)
@ -72,13 +72,13 @@ func NewScrollContainer (horizontal, vertical bool) (element *ScrollContainer) {
func (element *ScrollContainer) Adopt (child elements.Scrollable) {
// disown previous child if it exists
if element.child != nil {
element.clearChildEventHandlers(child)
element.disownChild(child)
}
// adopt new child
element.child = child
if child != nil {
element.setChildEventHandlers(child)
element.setUpChild(child)
}
element.updateEnabled()
@ -89,50 +89,47 @@ func (element *ScrollContainer) Adopt (child elements.Scrollable) {
}
}
func (element *ScrollContainer) setChildEventHandlers (child elements.Element) {
if child0, ok := child.(elements.Themeable); ok {
child0.SetTheme(element.theme.Theme)
func (element *ScrollContainer) setUpChild (child elements.Element) {
child.SetParent(element)
if child, ok := child.(elements.Themeable); ok {
child.SetTheme(element.theme.Theme)
}
if child0, ok := child.(elements.Configurable); ok {
child0.SetConfig(element.config.Config)
}
child.OnDamage (func (region canvas.Canvas) {
element.core.DamageRegion(region.Bounds())
})
child.OnMinimumSizeChange (func () {
element.updateMinimumSize()
element.redoAll()
element.core.DamageAll()
})
if child0, ok := child.(elements.Focusable); ok {
child0.OnFocusRequest (func () (granted bool) {
return element.childFocusRequestCallback(child0)
})
child0.OnFocusMotionRequest (
func (direction input.KeynavDirection) (granted bool) {
if element.onFocusMotionRequest == nil { return }
return element.onFocusMotionRequest(direction)
})
}
if child0, ok := child.(elements.Scrollable); ok {
child0.OnScrollBoundsChange(element.childScrollBoundsChangeCallback)
if child, ok := child.(elements.Configurable); ok {
child.SetConfig(element.config.Config)
}
}
func (element *ScrollContainer) clearChildEventHandlers (child elements.Scrollable) {
child.DrawTo(nil, image.Rectangle { })
child.OnDamage(nil)
child.OnMinimumSizeChange(nil)
child.OnScrollBoundsChange(nil)
if child0, ok := child.(elements.Focusable); ok {
child0.OnFocusRequest(nil)
child0.OnFocusMotionRequest(nil)
if child0.Focused() {
child0.HandleUnfocus()
func (element *ScrollContainer) disownChild (child elements.Scrollable) {
child.DrawTo(nil, image.Rectangle { }, nil)
child.SetParent(nil)
if child, ok := child.(elements.Focusable); ok {
if child.Focused() {
child.HandleUnfocus()
}
}
}
// NotifyMinimumSizeChange notifies the container that the minimum size of a
// child element has changed.
func (element *ScrollContainer) NotifyMinimumSizeChange (child elements.Element) {
element.redoAll()
element.core.DamageAll()
}
// NotifyScrollBoundsChange notifies the container that the scroll bounds or
// axes of a child have changed.
func (element *ScrollContainer) NotifyScrollBoundsChange (child elements.Scrollable) {
element.updateEnabled()
viewportBounds := element.child.ScrollViewportBounds()
contentBounds := element.child.ScrollContentBounds()
if element.horizontal != nil {
element.horizontal.SetBounds(contentBounds, viewportBounds)
}
if element.vertical != nil {
element.vertical.SetBounds(contentBounds, viewportBounds)
}
}
// SetTheme sets the element's theme.
func (element *ScrollContainer) SetTheme (new theme.Theme) {
if new == element.theme.Theme { return }
@ -150,25 +147,13 @@ func (element *ScrollContainer) SetConfig (new config.Config) {
element.redoAll()
}
func (element *ScrollContainer) HandleMouseScroll (
func (element *ScrollContainer) HandleScroll (
x, y int,
deltaX, deltaY float64,
) {
element.scrollChildBy(int(deltaX), int(deltaY))
}
func (element *ScrollContainer) OnFocusRequest (callback func () (granted bool)) {
element.onFocusRequest = callback
element.Propagator.OnFocusRequest(callback)
}
func (element *ScrollContainer) OnFocusMotionRequest (
callback func (direction input.KeynavDirection) (granted bool),
) {
element.onFocusMotionRequest = callback
element.Propagator.OnFocusMotionRequest(callback)
}
// CountChildren returns the amount of children contained within this element.
func (element *ScrollContainer) CountChildren () (count int) {
return 3
@ -199,25 +184,25 @@ func (element *ScrollContainer) redoAll () {
if !element.core.HasImage() { return }
zr := image.Rectangle { }
if element.child != nil { element.child.DrawTo(nil, zr) }
if element.horizontal != nil { element.horizontal.DrawTo(nil, zr) }
if element.vertical != nil { element.vertical.DrawTo(nil, zr) }
if element.child != nil { element.child.DrawTo(nil, zr, nil) }
if element.horizontal != nil { element.horizontal.DrawTo(nil, zr, nil) }
if element.vertical != nil { element.vertical.DrawTo(nil, zr, nil) }
childBounds, horizontalBounds, verticalBounds := element.layout()
if element.child != nil {
element.child.DrawTo (
canvas.Cut(element.core, childBounds),
childBounds)
childBounds, element.childDamageCallback)
}
if element.horizontal != nil {
element.horizontal.DrawTo (
canvas.Cut(element.core, horizontalBounds),
horizontalBounds)
horizontalBounds, element.childDamageCallback)
}
if element.vertical != nil {
element.vertical.DrawTo (
canvas.Cut(element.core, verticalBounds),
verticalBounds)
verticalBounds, element.childDamageCallback)
}
element.draw()
}
@ -230,18 +215,8 @@ func (element *ScrollContainer) scrollChildBy (x, y int) {
element.child.ScrollTo(scrollPoint)
}
func (element *ScrollContainer) childFocusRequestCallback (
child elements.Focusable,
) (
granted bool,
) {
if element.onFocusRequest != nil && element.onFocusRequest() {
element.Propagator.HandleUnfocus()
element.Propagator.HandleFocus(input.KeynavDirectionNeutral)
return true
} else {
return false
}
func (element *ScrollContainer) childDamageCallback (region image.Rectangle) {
element.core.DamageRegion(region)
}
func (element *ScrollContainer) layout () (
@ -308,18 +283,6 @@ func (element *ScrollContainer) updateMinimumSize () {
element.core.SetMinimumSize(width, height)
}
func (element *ScrollContainer) childScrollBoundsChangeCallback () {
element.updateEnabled()
viewportBounds := element.child.ScrollViewportBounds()
contentBounds := element.child.ScrollContentBounds()
if element.horizontal != nil {
element.horizontal.SetBounds(contentBounds, viewportBounds)
}
if element.vertical != nil {
element.vertical.SetBounds(contentBounds, viewportBounds)
}
}
func (element *ScrollContainer) updateEnabled () {
horizontal, vertical := element.child.ScrollAxes()
if element.horizontal != nil {

8
elements/basic/slider.go
View File

@ -39,9 +39,9 @@ func NewSlider (value float64, vertical bool) (element *Slider) {
} else {
element.theme.Case = theme.C("basic", "sliderHorizontal")
}
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore(element.redo)
element.focusableControl = core.NewFocusableCore(element.core, element.redo)
element.updateMinimumSize()
return
}
@ -68,7 +68,7 @@ func (element *Slider) HandleMouseUp (x, y int, button input.Button) {
element.redo()
}
func (element *Slider) HandleMouseMove (x, y int) {
func (element *Slider) HandleMotion (x, y int) {
if element.dragging {
element.dragging = true
element.value = element.valueFor(x, y)
@ -79,7 +79,7 @@ func (element *Slider) HandleMouseMove (x, y int) {
}
}
func (element *Slider) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *Slider) HandleScroll (x, y int, deltaX, deltaY float64) { }
func (element *Slider) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
switch key {

2
elements/basic/spacer.go
View File

@ -20,7 +20,7 @@ type Spacer struct {
func NewSpacer (line bool) (element *Spacer) {
element = &Spacer { line: line }
element.theme.Case = theme.C("basic", "spacer")
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.updateMinimumSize()
return
}

7
elements/basic/switch.go
View File

@ -33,9 +33,9 @@ func NewSwitch (text string, on bool) (element *Switch) {
text: text,
}
element.theme.Case = theme.C("basic", "switch")
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore(element.redo)
element.focusableControl = core.NewFocusableCore(element.core, element.redo)
element.drawer.SetText([]rune(text))
element.updateMinimumSize()
return
@ -67,9 +67,6 @@ func (element *Switch) HandleMouseUp (x, y int, button input.Button) {
}
}
func (element *Switch) HandleMouseMove (x, y int) { }
func (element *Switch) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *Switch) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
if key == input.KeyEnter {
element.pressed = true

34
elements/basic/textbox.go
View File

@ -6,6 +6,7 @@ import "git.tebibyte.media/sashakoshka/tomo/theme"
import "git.tebibyte.media/sashakoshka/tomo/config"
import "git.tebibyte.media/sashakoshka/tomo/artist"
import "git.tebibyte.media/sashakoshka/tomo/canvas"
import "git.tebibyte.media/sashakoshka/tomo/elements"
import "git.tebibyte.media/sashakoshka/tomo/textdraw"
import "git.tebibyte.media/sashakoshka/tomo/textmanip"
import "git.tebibyte.media/sashakoshka/tomo/fixedutil"
@ -42,9 +43,9 @@ type TextBox struct {
func NewTextBox (placeholder, value string) (element *TextBox) {
element = &TextBox { }
element.theme.Case = theme.C("basic", "textBox")
element.Core, element.core = core.NewCore(element.handleResize)
element.Core, element.core = core.NewCore(element, element.handleResize)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore (func () {
element.focusableControl = core.NewFocusableCore (element.core, func () {
if element.core.HasImage () {
element.draw()
element.core.DamageAll()
@ -60,8 +61,8 @@ func NewTextBox (placeholder, value string) (element *TextBox) {
func (element *TextBox) handleResize () {
element.scrollToCursor()
element.draw()
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -79,7 +80,7 @@ func (element *TextBox) HandleMouseDown (x, y int, button input.Button) {
}
}
func (element *TextBox) HandleMouseMove (x, y int) {
func (element *TextBox) HandleMotion (x, y int) {
if !element.Enabled() { return }
if element.dragging {
@ -114,8 +115,6 @@ func (element *TextBox) HandleMouseUp (x, y int, button input.Button) {
}
}
func (element *TextBox) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *TextBox) HandleKeyDown(key input.Key, modifiers input.Modifiers) {
if element.onKeyDown != nil && element.onKeyDown(key, modifiers) {
return
@ -187,9 +186,10 @@ func (element *TextBox) HandleKeyDown(key input.Key, modifiers input.Modifiers)
element.scrollToCursor()
}
if (textChanged || scrollMemory != element.scroll) &&
element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if (textChanged || scrollMemory != element.scroll) {
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
if altered {
@ -240,6 +240,12 @@ func (element *TextBox) OnChange (callback func ()) {
element.onChange = callback
}
// OnScrollBoundsChange sets a function to be called when the element's viewport
// bounds, content bounds, or scroll axes change.
func (element *TextBox) OnScrollBoundsChange (callback func ()) {
element.onScrollBoundsChange = callback
}
// ScrollContentBounds returns the full content size of the element.
func (element *TextBox) ScrollContentBounds () (bounds image.Rectangle) {
bounds = element.valueDrawer.LayoutBounds()
@ -274,8 +280,8 @@ func (element *TextBox) ScrollTo (position image.Point) {
if element.scroll > maxPosition { element.scroll = maxPosition }
element.redo()
if element.onScrollBoundsChange != nil {
element.onScrollBoundsChange()
if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
parent.NotifyScrollBoundsChange(element)
}
}
@ -284,10 +290,6 @@ func (element *TextBox) ScrollAxes () (horizontal, vertical bool) {
return true, false
}
func (element *TextBox) OnScrollBoundsChange (callback func ()) {
element.onScrollBoundsChange = callback
}
func (element *TextBox) runOnChange () {
if element.onChange != nil {
element.onChange()

66
elements/core/core.go
View File

@ -3,31 +3,38 @@ package core
import "image"
import "image/color"
import "git.tebibyte.media/sashakoshka/tomo/canvas"
import "git.tebibyte.media/sashakoshka/tomo/elements"
// Core is a struct that implements some core functionality common to most
// widgets. It is meant to be embedded directly into a struct.
type Core struct {
canvas canvas.Canvas
bounds image.Rectangle
parent elements.Parent
outer elements.Element
metrics struct {
minimumWidth int
minimumHeight int
}
drawSizeChange func ()
onMinimumSizeChange func ()
onDamage func (region canvas.Canvas)
drawSizeChange func ()
onDamage func (region image.Rectangle)
}
// NewCore creates a new element core and its corresponding control.
// NewCore creates a new element core and its corresponding control given the
// element that it will be a part of. If outer is nil, this function will return
// nil.
func NewCore (
outer elements.Element,
drawSizeChange func (),
) (
core *Core,
control CoreControl,
) {
if outer == nil { return }
core = &Core {
outer: outer,
drawSizeChange: drawSizeChange,
}
control = CoreControl { core: core }
@ -47,28 +54,32 @@ func (core *Core) MinimumSize () (width, height int) {
return core.metrics.minimumWidth, core.metrics.minimumHeight
}
// MinimumSize fulfils the tomo.Element interface. This should not need to be
// overridden, unless you want to detect when the element is parented or
// unparented.
func (core *Core) SetParent (parent elements.Parent) {
if parent != nil && core.parent != nil {
panic("core.SetParent: element already has a parent")
}
core.parent = parent
}
// DrawTo fulfills the tomo.Element interface. This should not need to be
// overridden.
func (core *Core) DrawTo (canvas canvas.Canvas, bounds image.Rectangle) {
core.canvas = canvas
core.bounds = bounds
func (core *Core) DrawTo (
canvas canvas.Canvas,
bounds image.Rectangle,
onDamage func (region image.Rectangle),
) {
core.canvas = canvas
core.bounds = bounds
core.onDamage = onDamage
if core.drawSizeChange != nil && core.canvas != nil {
core.drawSizeChange()
}
}
// OnDamage fulfils the tomo.Element interface. This should not need to be
// overridden.
func (core *Core) OnDamage (callback func (region canvas.Canvas)) {
core.onDamage = callback
}
// OnMinimumSizeChange fulfils the tomo.Element interface. This should not need
// to be overridden.
func (core *Core) OnMinimumSizeChange (callback func ()) {
core.onMinimumSizeChange = callback
}
// CoreControl is a struct that can exert control over a Core struct. It can be
// used as a canvas. It must not be directly embedded into an element, but
// instead kept as a private member. When a Core struct is created, a
@ -106,6 +117,16 @@ func (control CoreControl) Buffer () (data []color.RGBA, stride int) {
return control.core.canvas.Buffer()
}
// Parent returns the element's parent.
func (control CoreControl) Parent () elements.Parent {
return control.core.parent
}
// Outer returns the outer element given when the control was constructed.
func (control CoreControl) Outer () elements.Element {
return control.core.outer
}
// HasImage returns true if the core has an allocated image buffer, and false if
// it doesn't.
func (control CoreControl) HasImage () (has bool) {
@ -118,8 +139,7 @@ func (control CoreControl) DamageRegion (regions ...image.Rectangle) {
if control.core.canvas == nil { return }
if control.core.onDamage != nil {
for _, region := range regions {
control.core.onDamage (
canvas.Cut(control.core.canvas, region))
control.core.onDamage(region)
}
}
}
@ -141,8 +161,8 @@ func (control CoreControl) SetMinimumSize (width, height int) {
core.metrics.minimumWidth = width
core.metrics.minimumHeight = height
if control.core.onMinimumSizeChange != nil {
control.core.onMinimumSizeChange()
if control.core.parent != nil {
control.core.parent.NotifyMinimumSizeChange(control.core.outer)
}
}

41
elements/core/selectable.go → elements/core/focusable.go
View File

@ -2,15 +2,15 @@ package core
// import "runtime/debug"
import "git.tebibyte.media/sashakoshka/tomo/input"
import "git.tebibyte.media/sashakoshka/tomo/elements"
// FocusableCore is a struct that can be embedded into objects to make them
// focusable, giving them the default keynav behavior.
type FocusableCore struct {
core CoreControl
focused bool
enabled bool
drawFocusChange func ()
onFocusRequest func () (granted bool)
onFocusMotionRequest func(input.KeynavDirection) (granted bool)
}
// NewFocusableCore creates a new focusability core and its corresponding
@ -18,16 +18,18 @@ type FocusableCore struct {
// state changes (which it should), a callback to draw and push the update can
// be specified.
func NewFocusableCore (
core CoreControl,
drawFocusChange func (),
) (
core *FocusableCore,
focusable *FocusableCore,
control FocusableCoreControl,
) {
core = &FocusableCore {
focusable = &FocusableCore {
core: core,
drawFocusChange: drawFocusChange,
enabled: true,
}
control = FocusableCoreControl { core: core }
control = FocusableCoreControl { core: focusable }
return
}
@ -39,13 +41,10 @@ func (core *FocusableCore) Focused () (focused bool) {
// Focus focuses this element, if its parent element grants the request.
func (core *FocusableCore) Focus () {
if !core.enabled || core.focused { return }
if core.onFocusRequest != nil {
if core.onFocusRequest() {
core.focused = true
if core.drawFocusChange != nil {
core.drawFocusChange()
}
}
parent := core.core.Parent()
if parent, ok := parent.(elements.FocusableParent); ok {
core.focused = parent.RequestFocus (
core.core.Outer().(elements.Focusable))
}
}
@ -76,24 +75,6 @@ func (core *FocusableCore) HandleUnfocus () {
if core.drawFocusChange != nil { core.drawFocusChange() }
}
// OnFocusRequest sets a function to be called when this element
// wants its parent element to focus it. Parent elements should return
// true if the request was granted, and false if it was not.
func (core *FocusableCore) OnFocusRequest (callback func () (granted bool)) {
core.onFocusRequest = callback
}
// OnFocusMotionRequest sets a function to be called when this
// element wants its parent element to focus the element behind or in
// front of it, depending on the specified direction. Parent elements
// should return true if the request was granted, and false if it was
// not.
func (core *FocusableCore) OnFocusMotionRequest (
callback func (direction input.KeynavDirection) (granted bool),
) {
core.onFocusMotionRequest = callback
}
// Enabled returns whether or not the element is enabled.
func (core *FocusableCore) Enabled () (enabled bool) {
return core.enabled

132
elements/core/propagator.go
View File

@ -6,9 +6,9 @@ import "git.tebibyte.media/sashakoshka/tomo/theme"
import "git.tebibyte.media/sashakoshka/tomo/config"
import "git.tebibyte.media/sashakoshka/tomo/elements"
// Parent represents an object that can provide access to a list of child
// Container represents an object that can provide access to a list of child
// elements.
type Parent interface {
type Container interface {
Child (index int) elements.Element
CountChildren () int
}
@ -18,20 +18,20 @@ type Parent interface {
// all of the event handlers. It also implements standard behavior for focus
// propagation and keyboard navigation.
type Propagator struct {
parent Parent
drags [10]elements.MouseTarget
focused bool
onFocusRequest func () (granted bool)
core CoreControl
container Container
drags [10]elements.MouseTarget
focused bool
}
// NewPropagator creates a new event propagator that uses the specified parent
// to access a list of child elements that will have events propagated to them.
// If parent is nil, the function will return nil.
func NewPropagator (parent Parent) (propagator *Propagator) {
if parent == nil { return nil }
// NewPropagator creates a new event propagator that uses the specified
// container to access a list of child elements that will have events propagated
// to them. If container is nil, the function will return nil.
func NewPropagator (container Container, core CoreControl) (propagator *Propagator) {
if container == nil { return nil }
propagator = &Propagator {
parent: parent,
core: core,
container: container,
}
return
}
@ -47,8 +47,11 @@ func (propagator *Propagator) Focused () (focused bool) {
// Focus focuses this element, if its parent element grants the
// request.
func (propagator *Propagator) Focus () {
if propagator.onFocusRequest != nil {
propagator.onFocusRequest()
if propagator.focused == true { return }
parent := propagator.core.Parent()
if parent, ok := parent.(elements.FocusableParent); ok && parent != nil {
propagator.focused = parent.RequestFocus (
propagator.core.Outer().(elements.Focusable))
}
}
@ -86,7 +89,7 @@ func (propagator *Propagator) HandleFocus (direction input.KeynavDirection) (acc
// an element is currently focused, so we need to move the
// focus in the specified direction
firstFocusedChild :=
propagator.parent.Child(firstFocused).
propagator.container.Child(firstFocused).
(elements.Focusable)
// before we move the focus, the currently focused child
@ -99,11 +102,11 @@ func (propagator *Propagator) HandleFocus (direction input.KeynavDirection) (acc
// find the previous/next focusable element relative to the
// currently focused element, if it exists.
for index := firstFocused + int(direction);
index < propagator.parent.CountChildren() && index >= 0;
index < propagator.container.CountChildren() && index >= 0;
index += int(direction) {
child, focusable :=
propagator.parent.Child(index).
propagator.container.Child(index).
(elements.Focusable)
if focusable && child.HandleFocus(direction) {
// we have found one, so we now actually move
@ -118,6 +121,43 @@ func (propagator *Propagator) HandleFocus (direction input.KeynavDirection) (acc
return false
}
// RequestFocus notifies the parent that a child element is requesting
// keyboard focus. If the parent grants the request, the method will
// return true and the child element should behave as if a HandleFocus
// call was made.
func (propagator *Propagator) RequestFocus (
child elements.Focusable,
) (
granted bool,
) {
if parent, ok := propagator.core.Parent().(elements.FocusableParent); ok {
if parent.RequestFocus(propagator.core.Outer().(elements.Focusable)) {
propagator.HandleUnfocus()
propagator.focused = true
granted = true
}
}
return
}
// RequestFocusMotion notifies the parent that a child element wants the
// focus to be moved to the next focusable element.
func (propagator *Propagator) RequestFocusNext (child elements.Focusable) {
if !propagator.focused { return }
if parent, ok := propagator.core.Parent().(elements.FocusableParent); ok {
parent.RequestFocusNext(propagator.core.Outer().(elements.Focusable))
}
}
// RequestFocusMotion notifies the parent that a child element wants the
// focus to be moved to the previous focusable element.
func (propagator *Propagator) RequestFocusPrevious (child elements.Focusable) {
if !propagator.focused { return }
if parent, ok := propagator.core.Parent().(elements.FocusableParent); ok {
parent.RequestFocusPrevious(propagator.core.Outer().(elements.Focusable))
}
}
// HandleDeselection causes this element to mark itself and all of its children
// as unfocused.
func (propagator *Propagator) HandleUnfocus () {
@ -128,22 +168,6 @@ func (propagator *Propagator) HandleUnfocus () {
propagator.focused = false
}
// OnFocusRequest sets a function to be called when this element wants its
// parent element to focus it. Parent elements should return true if the request
// was granted, and false if it was not. If the parent element returns true, the
// element acts as if a HandleFocus call was made with KeynavDirectionNeutral.
func (propagator *Propagator) OnFocusRequest (callback func () (granted bool)) {
propagator.onFocusRequest = callback
}
// OnFocusMotionRequest sets a function to be called when this element wants its
// parent element to focus the element behind or in front of it, depending on
// the specified direction. Parent elements should return true if the request
// was granted, and false if it was not.
func (propagator *Propagator) OnFocusMotionRequest (
callback func (direction input.KeynavDirection) (granted bool),
) { }
// HandleKeyDown propogates the keyboard event to the currently selected child.
func (propagator *Propagator) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
propagator.forFocused (func (child elements.Focusable) bool {
@ -188,36 +212,32 @@ func (propagator *Propagator) HandleMouseUp (x, y int, button input.Button) {
}
}
// HandleMouseMove propagates the mouse event to the element that was last
// HandleMotion propagates the mouse event to the element that was last
// pressed down by the mouse if the mouse is currently being held down, else it
// propagates the event to whichever element is underneath the mouse pointer.
func (propagator *Propagator) HandleMouseMove (x, y int) {
func (propagator *Propagator) HandleMotion (x, y int) {
handled := false
for _, child := range propagator.drags {
if child != nil {
child.HandleMouseMove(x, y)
if child, ok := child.(elements.MotionTarget); ok {
child.HandleMotion(x, y)
handled = true
}
}
if handled {
child, handlesMouse :=
propagator.childAt(image.Pt(x, y)).
(elements.MouseTarget)
if handlesMouse {
child.HandleMouseMove(x, y)
if !handled {
child := propagator.childAt(image.Pt(x, y))
if child, ok := child.(elements.MotionTarget); ok {
child.HandleMotion(x, y)
}
}
}
// HandleScroll propagates the mouse event to the element under the mouse
// pointer.
func (propagator *Propagator) HandleMouseScroll (x, y int, deltaX, deltaY float64) {
child, handlesMouse :=
propagator.childAt(image.Pt(x, y)).
(elements.MouseTarget)
if handlesMouse {
child.HandleMouseScroll(x, y, deltaX, deltaY)
func (propagator *Propagator) HandleScroll (x, y int, deltaX, deltaY float64) {
child := propagator.childAt(image.Pt(x, y))
if child, ok := child.(elements.ScrollTarget); ok {
child.HandleScroll(x, y, deltaX, deltaY)
}
}
@ -281,16 +301,16 @@ func (propagator *Propagator) focusLastFocusableElement (
// ----------- Iterator utilities ----------- //
func (propagator *Propagator) forChildren (callback func (child elements.Element) bool) {
for index := 0; index < propagator.parent.CountChildren(); index ++ {
child := propagator.parent.Child(index)
for index := 0; index < propagator.container.CountChildren(); index ++ {
child := propagator.container.Child(index)
if child == nil { continue }
if !callback(child) { break }
}
}
func (propagator *Propagator) forChildrenReverse (callback func (child elements.Element) bool) {
for index := propagator.parent.CountChildren() - 1; index > 0; index -- {
child := propagator.parent.Child(index)
for index := propagator.container.CountChildren() - 1; index > 0; index -- {
child := propagator.container.Child(index)
if child == nil { continue }
if !callback(child) { break }
}
@ -327,8 +347,8 @@ func (propagator *Propagator) forFocusable (callback func (child elements.Focusa
}
func (propagator *Propagator) firstFocused () int {
for index := 0; index < propagator.parent.CountChildren(); index ++ {
child, focusable := propagator.parent.Child(index).(elements.Focusable)
for index := 0; index < propagator.container.CountChildren(); index ++ {
child, focusable := propagator.container.Child(index).(elements.Focusable)
if focusable && child.Focused() {
return index
}

78
elements/element.go
View File

@ -10,27 +10,26 @@ import "git.tebibyte.media/sashakoshka/tomo/config"
type Element interface {
// Bounds reports the element's bounding box. This must reflect the
// bounding last given to the element by DrawTo.
Bounds () (bounds image.Rectangle)
// DrawTo gives the element a canvas to draw on, along with a bounding
// box to be used for laying out the element. This should only be called
// by the parent element. This is typically a region of the parent
// element's canvas.
DrawTo (canvas canvas.Canvas, bounds image.Rectangle)
// OnDamage sets a function to be called when an area of the element is
// drawn on and should be pushed to the screen.
OnDamage (callback func (region canvas.Canvas))
Bounds () image.Rectangle
// MinimumSize specifies the minimum amount of pixels this element's
// width and height may be set to. If the element is given a resize
// event with dimensions smaller than this, it will use its minimum
// instead of the offending dimension(s).
MinimumSize () (width, height int)
// OnMinimumSizeChange sets a function to be called when the element's
// minimum size is changed.
OnMinimumSizeChange (callback func ())
// SetParent sets the parent container of the element. This should only
// be called by the parent when the element is adopted. If parent is set
// to nil, it will mark itself as not having a parent. If this method is
// passed a non-nil value and the element already has a parent, it will
// panic.
SetParent (Parent)
// DrawTo gives the element a canvas to draw on, along with a bounding
// box to be used for laying out the element. This should only be called
// by the parent element. This is typically a region of the parent
// element's canvas.
DrawTo (canvas canvas.Canvas, bounds image.Rectangle, onDamage func (region image.Rectangle))
}
// Focusable represents an element that has keyboard navigation support. This
@ -41,7 +40,7 @@ type Focusable interface {
// Focused returns whether or not this element or any of its children
// are currently focused.
Focused () (selected bool)
Focused () bool
// Focus focuses this element, if its parent element grants the
// request.
@ -57,20 +56,6 @@ type Focusable interface {
// HandleDeselection causes this element to mark itself and all of its
// children as unfocused.
HandleUnfocus ()
// OnFocusRequest sets a function to be called when this element wants
// its parent element to focus it. Parent elements should return true if
// the request was granted, and false if it was not. If the parent
// element returns true, the element must act as if a HandleFocus call
// was made with KeynavDirectionNeutral.
OnFocusRequest (func () (granted bool))
// OnFocusMotionRequest sets a function to be called when this
// element wants its parent element to focus the element behind or in
// front of it, depending on the specified direction. Parent elements
// should return true if the request was granted, and false if it was
// not.
OnFocusMotionRequest (func (direction input.KeynavDirection) (granted bool))
}
// KeyboardTarget represents an element that can receive keyboard input.
@ -93,9 +78,6 @@ type KeyboardTarget interface {
type MouseTarget interface {
Element
// Each of these handler methods is passed the position of the mouse
// cursor at the time of the event as x, y.
// HandleMouseDown is called when a mouse button is pressed down on this
// element.
HandleMouseDown (x, y int, button input.Button)
@ -103,15 +85,25 @@ type MouseTarget interface {
// HandleMouseUp is called when a mouse button is released that was
// originally pressed down on this element.
HandleMouseUp (x, y int, button input.Button)
}
// HandleMouseMove is called when the mouse is moved over this element,
// MotionTarget represents an element that can receive mouse motion events.
type MotionTarget interface {
Element
// HandleMotion is called when the mouse is moved over this element,
// or the mouse is moving while being held down and originally pressed
// down on this element.
HandleMouseMove (x, y int)
HandleMotion (x, y int)
}
// ScrollTarget represents an element that can receive mouse scroll events.
type ScrollTarget interface {
Element
// HandleScroll is called when the mouse is scrolled. The X and Y
// direction of the scroll event are passed as deltaX and deltaY.
HandleMouseScroll (x, y int, deltaX, deltaY float64)
HandleScroll (x, y int, deltaX, deltaY float64)
}
// Flexible represents an element who's preferred minimum height can change in
@ -132,11 +124,7 @@ type Flexible interface {
//
// It is important to note that if a parent container checks for
// flexible chilren, it itself will likely need to be flexible.
FlexibleHeightFor (width int) (height int)
// OnFlexibleHeightChange sets a function to be called when the
// parameters affecting this element's flexible height are changed.
OnFlexibleHeightChange (callback func ())
FlexibleHeightFor (width int) int
}
// Scrollable represents an element that can be scrolled. It acts as a viewport
@ -145,11 +133,11 @@ type Scrollable interface {
Element
// ScrollContentBounds returns the full content size of the element.
ScrollContentBounds () (bounds image.Rectangle)
ScrollContentBounds () image.Rectangle
// ScrollViewportBounds returns the size and position of the element's
// viewport relative to ScrollBounds.
ScrollViewportBounds () (bounds image.Rectangle)
ScrollViewportBounds () image.Rectangle
// ScrollTo scrolls the viewport to the specified point relative to
// ScrollBounds.
@ -157,10 +145,6 @@ type Scrollable interface {
// ScrollAxes returns the supported axes for scrolling.
ScrollAxes () (horizontal, vertical bool)
// OnScrollBoundsChange sets a function to be called when the element's
// ScrollContentBounds, ScrollViewportBounds, or ScrollAxes are changed.
OnScrollBoundsChange (callback func ())
}
// Collapsible represents an element who's minimum width and height can be

2
elements/fun/clock.go
View File

@ -23,7 +23,7 @@ type AnalogClock struct {
func NewAnalogClock (newTime time.Time) (element *AnalogClock) {
element = &AnalogClock { }
element.theme.Case = theme.C("fun", "clock")
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.core.SetMinimumSize(64, 64)
return
}

8
elements/fun/piano.go
View File

@ -53,12 +53,12 @@ func NewPiano (low, high music.Octave) (element *Piano) {
}
element.theme.Case = theme.C("fun", "piano")
element.Core, element.core = core.NewCore (func () {
element.Core, element.core = core.NewCore (element, func () {
element.recalculate()
element.draw()
})
element.FocusableCore,
element.focusableControl = core.NewFocusableCore(element.redo)
element.focusableControl = core.NewFocusableCore(element.core, element.redo)
element.updateMinimumSize()
return
}
@ -88,13 +88,11 @@ func (element *Piano) HandleMouseUp (x, y int, button input.Button) {
element.redo()
}
func (element *Piano) HandleMouseMove (x, y int) {
func (element *Piano) HandleMotion (x, y int) {
if element.pressed == nil { return }
element.pressUnderMouseCursor(image.Pt(x, y))
}
func (element *Piano) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
func (element *Piano) pressUnderMouseCursor (point image.Point) {
// find out which note is being pressed
newKey := (*pianoKey)(nil)

53
elements/parent.go Normal file
View File

@ -0,0 +1,53 @@
package elements
// Parent represents a type capable of containing child elements.
type Parent interface {
// NotifyMinimumSizeChange notifies the container that a child element's
// minimum size has changed. This method is expected to be called by
// child elements when their minimum size changes.
NotifyMinimumSizeChange (child Element)
}
// FocusableParent represents a parent with keyboard navigation support.
type FocusableParent interface {
Parent
// RequestFocus notifies the parent that a child element is requesting
// keyboard focus. If the parent grants the request, the method will
// return true and the child element should behave as if a HandleFocus
// call was made.
RequestFocus (child Focusable) (granted bool)
// RequestFocusMotion notifies the parent that a child element wants the
// focus to be moved to the next focusable element.
RequestFocusNext (child Focusable)
// RequestFocusMotion notifies the parent that a child element wants the
// focus to be moved to the previous focusable element.
RequestFocusPrevious (child Focusable)
}
// FlexibleParent represents a parent that accounts for elements with
// flexible height.
type FlexibleParent interface {
Parent
// NotifyFlexibleHeightChange notifies the parent that the parameters
// affecting a child's flexible height have changed. This method is
// expected to be called by flexible child element when their content
// changes.
NotifyFlexibleHeightChange (child Flexible)
}
// ScrollableParent represents a parent that can change the scroll
// position of its child element(s).
type ScrollableParent interface {
Parent
// NotifyScrollBoundsChange notifies the parent that a child's scroll
// content bounds or viewport bounds have changed. This is expected to
// be called by child elements when they change their supported scroll
// axes, their scroll position (either autonomously or as a result of a
// call to ScrollTo()), or their content size.
NotifyScrollBoundsChange (child Scrollable)
}

2
elements/testing/artist.go
View File

@ -23,7 +23,7 @@ type Artist struct {
// NewArtist creates a new artist test element.
func NewArtist () (element *Artist) {
element = &Artist { }
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.core.SetMinimumSize(240, 240)
return
}

6
elements/testing/mouse.go
View File

@ -24,7 +24,7 @@ type Mouse struct {
// NewMouse creates a new mouse test element.
func NewMouse () (element *Mouse) {
element = &Mouse { c: theme.C("testing", "mouse") }
element.Core, element.core = core.NewCore(element.draw)
element.Core, element.core = core.NewCore(element, element.draw)
element.core.SetMinimumSize(32, 32)
return
}
@ -82,7 +82,7 @@ func (element *Mouse) HandleMouseUp (x, y int, button input.Button) {
element.lastMousePos = mousePos
}
func (element *Mouse) HandleMouseMove (x, y int) {
func (element *Mouse) HandleMotion (x, y int) {
if !element.drawing { return }
mousePos := image.Pt(x, y)
element.core.DamageRegion (shapes.ColorLine (
@ -90,5 +90,3 @@ func (element *Mouse) HandleMouseMove (x, y int) {
element.lastMousePos, mousePos))
element.lastMousePos = mousePos
}
func (element *Mouse) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }

11
elements/window.go
View File

@ -4,19 +4,20 @@ import "image"
// Window represents a top-level container generated by the currently running
// backend. It can contain a single element. It is hidden by default, and must
// be explicitly shown with the Show() method. If it contains no element, it
// displays a black (or transprent) background.
// be explicitly shown with the Show() method.
type Window interface {
Parent
// Adopt sets the root element of the window. There can only be one of
// these at one time.
Adopt (child Element)
Adopt (Element)
// Child returns the root element of the window.
Child () (child Element)
Child () Element
// SetTitle sets the title that appears on the window's title bar. This
// method might have no effect with some backends.
SetTitle (title string)
SetTitle (string)
// SetIcon taks in a list different sizes of the same icon and selects
// the best one to display on the window title bar, dock, or whatever is

8
examples/raycaster/game.go
View File

@ -31,7 +31,11 @@ func NewGame (world World, textures Textures) (game *Game) {
return
}
func (game *Game) DrawTo (canvas canvas.Canvas, bounds image.Rectangle) {
func (game *Game) DrawTo (
canvas canvas.Canvas,
bounds image.Rectangle,
onDamage func (image.Rectangle),
) {
if canvas == nil {
select {
case game.stopChan <- true:
@ -41,7 +45,7 @@ func (game *Game) DrawTo (canvas canvas.Canvas, bounds image.Rectangle) {
game.running = true
go game.run()
}
game.Raycaster.DrawTo(canvas, bounds)
game.Raycaster.DrawTo(canvas, bounds, onDamage)
}
func (game *Game) Stamina () float64 {

4
examples/raycaster/raycaster.go
View File

@ -49,9 +49,9 @@ func NewRaycaster (world World, textures Textures) (element *Raycaster) {
textures: textures,
renderDistance: 8,
}
element.Core, element.core = core.NewCore(element.drawAll)
element.Core, element.core = core.NewCore(element, element.drawAll)
element.FocusableCore,
element.focusableControl = core.NewFocusableCore(element.Draw)
element.focusableControl = core.NewFocusableCore(element.core, element.Draw)
element.core.SetMinimumSize(64, 64)
return
}