tomo/tomo-old
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Redid the entity system a bit to make it more reliable

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Now it supports things like parenting elements before they are
added to a window and elements no longer have to constantly check
for a nil entity
This commit is contained in:
Sasha Koshka
2023-04-15 01:14:36 -04:00
parent 5cf0b162c0
commit 437aef0c27
12 changed files with 129 additions and 96 deletions
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20
elements/checkbox.go
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@@ -27,6 +27,7 @@ type Checkbox struct {
// NewCheckbox creates a new cbeckbox with the specified label text.
func NewCheckbox (text string, checked bool) (element *Checkbox) {
element = &Checkbox { checked: checked, enabled: true }
element.entity = tomo.NewEntity(element).(tomo.FocusableEntity)
element.theme.Case = tomo.C("tomo", "checkbox")
element.drawer.SetFace (element.theme.FontFace (
tomo.FontStyleRegular,
@@ -35,11 +36,9 @@ func NewCheckbox (text string, checked bool) (element *Checkbox) {
return
}
// Bind binds this element to an entity.
func (element *Checkbox) Bind (entity tomo.Entity) {
if entity == nil { element.entity = nil; return }
element.entity = entity.(tomo.FocusableEntity)
element.updateMinimumSize()
// Entity returns this element's entity.
func (element *Checkbox) Entity () tomo.Entity {
return element.entity
}
// OnToggle sets the function to be called when the checkbox is toggled.
@@ -54,7 +53,6 @@ func (element *Checkbox) Value () (checked bool) {
// Focus gives this element input focus.
func (element *Checkbox) Focus () {
if element.entity == nil { return }
if !element.entity.Focused() { element.entity.Focus() }
}
@@ -76,7 +74,6 @@ func (element *Checkbox) SetText (text string) {
if element.text == text { return }
element.text = text
element.drawer.SetText([]rune(text))
if element.entity == nil { return }
element.updateMinimumSize()
element.entity.Invalidate()
}
@@ -88,7 +85,6 @@ func (element *Checkbox) SetTheme (new tomo.Theme) {
element.drawer.SetFace (element.theme.FontFace (
tomo.FontStyleRegular,
tomo.FontSizeNormal))
if element.entity == nil { return }
element.updateMinimumSize()
element.entity.Invalidate()
}
@@ -97,15 +93,12 @@ func (element *Checkbox) SetTheme (new tomo.Theme) {
func (element *Checkbox) SetConfig (new tomo.Config) {
if new == element.config.Config { return }
element.config.Config = new
if element.entity == nil { return }
element.updateMinimumSize()
element.entity.Invalidate()
}
// Draw causes the element to draw to the specified destination canvas.
func (element *Checkbox) Draw (destination canvas.Canvas) {
if element.entity == nil { return }
bounds := element.entity.Bounds()
boxBounds := image.Rect(0, 0, bounds.Dy(), bounds.Dy()).Add(bounds.Min)
@@ -116,7 +109,7 @@ func (element *Checkbox) Draw (destination canvas.Canvas) {
On: element.checked,
}
element.entity.DrawBackground(destination, bounds)
element.entity.DrawBackground(destination)
pattern := element.theme.Pattern(tomo.PatternButton, state)
pattern.Draw(destination, boxBounds)
@@ -135,7 +128,6 @@ func (element *Checkbox) Draw (destination canvas.Canvas) {
}
func (element *Checkbox) HandleMouseDown (x, y int, button input.Button) {
if element.entity == nil { return }
if !element.Enabled() { return }
element.Focus()
element.pressed = true
@@ -143,7 +135,6 @@ func (element *Checkbox) HandleMouseDown (x, y int, button input.Button) {
}
func (element *Checkbox) HandleMouseUp (x, y int, button input.Button) {
if element.entity == nil { return }
if button != input.ButtonLeft || !element.pressed { return }
element.pressed = false
@@ -167,7 +158,6 @@ func (element *Checkbox) HandleKeyDown (key input.Key, modifiers input.Modifiers
}
func (element *Checkbox) HandleKeyUp (key input.Key, modifiers input.Modifiers) {
if element.entity == nil { return }
if key == input.KeyEnter && element.pressed {
element.pressed = false
element.checked = !element.checked