82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
package elements
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import "git.tebibyte.media/sashakoshka/tomo"
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import "git.tebibyte.media/sashakoshka/tomo/artist"
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// Spacer can be used to put space between two elements..
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type Spacer struct {
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entity tomo.Entity
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line bool
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}
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// NewSpacer creates a new spacer.
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func NewSpacer () (element *Spacer) {
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element = &Spacer { }
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element.entity = tomo.NewEntity(element).(spacerEntity)
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element.theme.Case = tomo.C("tomo", "spacer")
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element.updateMinimumSize()
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return
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}
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// NewLine creates a new line separator.
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func NewLine () (element *Spacer) {
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element = NewSpacer()
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element.SetLine(true)
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return
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}
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// Entity returns this element's entity.
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func (element *Spacer) Entity () tomo.Entity {
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return element.entity
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}
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// Draw causes the element to draw to the specified destination canvas.
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func (element *Spacer) Draw (destination artist.Canvas) {
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bounds := element.entity.Bounds()
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if element.line {
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pattern := element.theme.Pattern (
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tomo.PatternLine,
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tomo.State { })
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pattern.Draw(destination, bounds)
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} else {
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pattern := element.theme.Pattern (
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tomo.PatternBackground,
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tomo.State { })
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pattern.Draw(destination, bounds)
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}
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}
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/// SetLine sets whether or not the spacer will appear as a colored line.
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func (element *Spacer) SetLine (line bool) {
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if element.line == line { return }
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element.line = line
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element.updateMinimumSize()
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element.entity.Invalidate()
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}
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// SetTheme sets the element's theme.
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func (element *Spacer) SetTheme (new tomo.Theme) {
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if new == element.theme.Theme { return }
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element.theme.Theme = new
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element.entity.Invalidate()
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}
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// SetConfig sets the element's configuration.
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func (element *Spacer) SetConfig (new tomo.Config) {
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if new == element.config.Config { return }
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element.config.Config = new
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element.entity.Invalidate()
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}
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func (element *Spacer) updateMinimumSize () {
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if element.line {
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padding := element.theme.Padding(tomo.PatternLine)
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element.entity.SetMinimumSize (
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padding.Horizontal(),
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padding.Vertical())
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} else {
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element.entity.SetMinimumSize(1, 1)
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}
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}
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