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Buttons can now hide their text

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This commit is contained in:
Sasha Koshka 2023-03-05 00:23:45 -05:00
parent 6c46fc6f7c
commit 865dd20724
1 changed files with 44 additions and 18 deletions
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62
elements/basic/button.go
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@ -24,15 +24,16 @@ type Button struct {
config config.Wrapped
theme theme.Wrapped
hasIcon bool
iconId theme.Icon
showText bool
hasIcon bool
iconId theme.Icon
onClick func ()
}
// NewButton creates a new button with the specified label text.
func NewButton (text string) (element *Button) {
element = &Button { }
element = &Button { showText: true }
element.theme.Case = theme.C("basic", "button")
element.Core, element.core = core.NewCore(element.drawAll)
element.FocusableCore,
@ -119,6 +120,14 @@ func (element *Button) ClearIcon () {
element.drawAndPush()
}
// ShowText sets whether or not the button's text will be displayed.
func (element *Button) ShowText (showText bool) {
if element.showText == showText { return }
element.showText = showText
element.updateMinimumSize()
element.drawAndPush()
}
// SetTheme sets the element's theme.
func (element *Button) SetTheme (new theme.Theme) {
if new == element.theme.Theme { return }
@ -139,16 +148,25 @@ func (element *Button) SetConfig (new config.Config) {
}
func (element *Button) updateMinimumSize () {
textBounds := element.drawer.LayoutBounds()
padding := element.theme.Padding(theme.PatternButton)
margin := element.theme.Margin(theme.PatternButton)
minimumSize := padding.Inverse().Apply(textBounds)
minimumSize = minimumSize.Sub(minimumSize.Min)
var minimumSize image.Rectangle
if element.showText {
minimumSize = element.drawer.LayoutBounds()
}
minimumSize = padding.Inverse().Apply(minimumSize)
minimumSize = minimumSize.Sub(minimumSize.Min)
if element.hasIcon {
icon := element.theme.Icon(element.iconId, theme.IconSizeSmall)
if icon != nil {
bounds := icon.Bounds()
minimumSize.Max.X += margin.X + bounds.Dx()
minimumSize.Max.X += bounds.Dx()
if element.showText {
minimumSize.Max.X += margin.X
}
if minimumSize.Max.Y < bounds.Dy() {
minimumSize.Max.Y = bounds.Dy()
}
@ -192,24 +210,32 @@ func (element *Button) drawText () {
foreground := element.theme.Color(theme.ColorForeground, state)
sink := element.theme.Sink(theme.PatternButton)
margin := element.theme.Margin(theme.PatternButton)
var offset image.Point
textBounds := element.drawer.LayoutBounds()
offset := image.Point {
X: bounds.Min.X + (bounds.Dx() - textBounds.Dx()) / 2,
Y: bounds.Min.Y + (bounds.Dy() - textBounds.Dy()) / 2,
}
offset.Y -= textBounds.Min.Y
offset.X -= textBounds.Min.X
if element.pressed {
offset = offset.Add(sink)
if element.showText {
textBounds := element.drawer.LayoutBounds()
offset = image.Point {
X: bounds.Min.X + (bounds.Dx() - textBounds.Dx()) / 2,
Y: bounds.Min.Y + (bounds.Dy() - textBounds.Dy()) / 2,
}
offset.Y -= textBounds.Min.Y
offset.X -= textBounds.Min.X
if element.pressed {
offset = offset.Add(sink)
}
}
if element.hasIcon {
icon := element.theme.Icon(element.iconId, theme.IconSizeSmall)
if icon != nil {
iconBounds := icon.Bounds()
addedWidth := margin.X + iconBounds.Dx()
addedWidth := iconBounds.Dx()
if element.showText {
addedWidth += margin.X
}
iconOffset := offset
iconOffset.X -= addedWidth / 2
iconOffset.Y =