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tomo-old/elements/basic/spacer.go

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package basicElements
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import "git.tebibyte.media/sashakoshka/tomo/theme"
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import "git.tebibyte.media/sashakoshka/tomo/config"
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import "git.tebibyte.media/sashakoshka/tomo/elements/core"
// Spacer can be used to put space between two elements..
type Spacer struct {
*core.Core
core core.CoreControl
line bool
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config config.Wrapped
theme theme.Wrapped
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}
// NewSpacer creates a new spacer. If line is set to true, the spacer will be
// filled with a line color, and if compressed to its minimum width or height,
// will appear as a line.
func NewSpacer (line bool) (element *Spacer) {
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element = &Spacer { line: line }
element.theme.Case = theme.C("basic", "spacer")
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element.Core, element.core = core.NewCore(element, element.draw)
element.updateMinimumSize()
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return
}
/// SetLine sets whether or not the spacer will appear as a colored line.
func (element *Spacer) SetLine (line bool) {
if element.line == line { return }
element.line = line
element.updateMinimumSize()
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if element.core.HasImage() {
element.draw()
element.core.DamageAll()
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}
}
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// SetTheme sets the element's theme.
func (element *Spacer) SetTheme (new theme.Theme) {
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if new == element.theme.Theme { return }
element.theme.Theme = new
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element.redo()
}
// SetConfig sets the element's configuration.
func (element *Spacer) SetConfig (new config.Config) {
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if new == element.config.Config { return }
element.config.Config = new
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element.redo()
}
func (element *Spacer) updateMinimumSize () {
if element.line {
padding := element.theme.Padding(theme.PatternLine)
element.core.SetMinimumSize (
padding.Horizontal(),
padding.Vertical())
} else {
element.core.SetMinimumSize(1, 1)
}
}
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func (element *Spacer) redo () {
if !element.core.HasImage() {
element.draw()
element.core.DamageAll()
}
}
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func (element *Spacer) draw () {
bounds := element.Bounds()
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if element.line {
pattern := element.theme.Pattern (
theme.PatternLine,
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theme.State { })
pattern.Draw(element.core, bounds)
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} else {
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pattern := element.theme.Pattern (
theme.PatternBackground,
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theme.State { })
pattern.Draw(element.core, bounds)
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}
}