54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
package basic
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import "image"
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import "git.tebibyte.media/sashakoshka/tomo/theme"
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import "git.tebibyte.media/sashakoshka/tomo/artist"
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import "git.tebibyte.media/sashakoshka/tomo/elements/core"
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// ProgressBar displays a visual indication of how far along a task is.
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type ProgressBar struct {
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*core.Core
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core core.CoreControl
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progress float64
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}
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// NewProgressBar creates a new progress bar displaying the given progress
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// level.
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func NewProgressBar (progress float64) (element *ProgressBar) {
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element = &ProgressBar { progress: progress }
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element.Core, element.core = core.NewCore(element)
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element.core.SetMinimumSize(theme.Padding() * 2, theme.Padding() * 2)
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return
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}
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// Resize resizes the progress bar.
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func (element *ProgressBar) Resize (width, height int) {
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element.core.AllocateCanvas(width, height)
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element.draw()
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return
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}
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// SetProgress sets the progress level of the bar.
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func (element *ProgressBar) SetProgress (progress float64) {
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if progress == element.progress { return }
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element.progress = progress
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if element.core.HasImage() {
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element.draw()
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element.core.DamageAll()
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}
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}
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func (element *ProgressBar) draw () {
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bounds := element.core.Bounds()
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pattern, inset := theme.SunkenPattern(theme.PatternState { })
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artist.FillRectangle(element.core, pattern, bounds)
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bounds = inset.Apply(bounds)
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meterBounds := image.Rect (
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bounds.Min.X, bounds.Min.Y,
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bounds.Min.X + int(float64(bounds.Dx()) * element.progress),
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bounds.Max.Y)
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accent, _ := theme.AccentPattern(theme.PatternState { })
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artist.FillRectangle(element.core, accent, meterBounds)
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}
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