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tomo-old/elements/basic/progressbar.go

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package basicElements
import "image"
import "git.tebibyte.media/sashakoshka/tomo/theme"
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import "git.tebibyte.media/sashakoshka/tomo/config"
import "git.tebibyte.media/sashakoshka/tomo/artist"
import "git.tebibyte.media/sashakoshka/tomo/elements/core"
// ProgressBar displays a visual indication of how far along a task is.
type ProgressBar struct {
*core.Core
core core.CoreControl
progress float64
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config config.Wrapped
theme theme.Wrapped
}
// NewProgressBar creates a new progress bar displaying the given progress
// level.
func NewProgressBar (progress float64) (element *ProgressBar) {
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element = &ProgressBar { progress: progress }
element.theme.Case = theme.C("basic", "progressBar")
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element.Core, element.core = core.NewCore(element.draw)
return
}
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// SetProgress sets the progress level of the bar.
func (element *ProgressBar) SetProgress (progress float64) {
if progress == element.progress { return }
element.progress = progress
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if element.core.HasImage() {
element.draw()
element.core.DamageAll()
}
}
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// SetTheme sets the element's theme.
func (element *ProgressBar) SetTheme (new theme.Theme) {
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if new == element.theme.Theme { return }
element.theme.Theme = new
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element.updateMinimumSize()
element.redo()
}
// SetConfig sets the element's configuration.
func (element *ProgressBar) SetConfig (new config.Config) {
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if new == nil || new == element.config.Config { return }
element.config.Config = new
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element.updateMinimumSize()
element.redo()
}
func (element (ProgressBar)) updateMinimumSize() {
element.core.SetMinimumSize (
element.config.Padding() * 2,
element.config.Padding() * 2)
}
func (element *ProgressBar) redo () {
if element.core.HasImage() {
element.draw()
element.core.DamageAll()
}
}
func (element *ProgressBar) draw () {
bounds := element.Bounds()
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pattern := element.theme.Pattern (
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theme.PatternSunken,
theme.PatternState { })
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inset := element.theme.Inset(theme.PatternSunken)
artist.FillRectangle(element, pattern, bounds)
bounds = inset.Apply(bounds)
meterBounds := image.Rect (
bounds.Min.X, bounds.Min.Y,
bounds.Min.X + int(float64(bounds.Dx()) * element.progress),
bounds.Max.Y)
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accent := element.theme.Pattern (
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theme.PatternAccent,
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theme.PatternState { })
artist.FillRectangle(element, accent, meterBounds)
}