package elements import "image" import "git.tebibyte.media/sashakoshka/tomo" import "git.tebibyte.media/sashakoshka/tomo/canvas" import "git.tebibyte.media/sashakoshka/tomo/artist" import "git.tebibyte.media/sashakoshka/tomo/default/theme" // Icon is an element capable of displaying a singular icon. type Icon struct { entity tomo.Entity theme theme.Wrapped id tomo.Icon size tomo.IconSize } // Icon creates a new icon element. func NewIcon (id tomo.Icon, size tomo.IconSize) (element *Icon) { element = &Icon { id: id, size: size, } element.entity = tomo.NewEntity(element) element.theme.Case = tomo.C("tomo", "icon") element.updateMinimumSize() return } // Entity returns this element's entity. func (element *Icon) Entity () tomo.Entity { return element.entity } // SetIcon sets the element's icon. func (element *Icon) SetIcon (id tomo.Icon, size tomo.IconSize) { element.id = id element.size = size if element.entity == nil { return } element.updateMinimumSize() element.entity.Invalidate() } // SetTheme sets the element's theme. func (element *Icon) SetTheme (new tomo.Theme) { if new == element.theme.Theme { return } element.theme.Theme = new if element.entity == nil { return } element.updateMinimumSize() element.entity.Invalidate() } // Draw causes the element to draw to the specified destination canvas. func (element *Icon) Draw (destination canvas.Canvas) { if element.entity == nil { return } bounds := element.entity.Bounds() state := tomo.State { } element.theme. Pattern(tomo.PatternBackground, state). Draw(destination, bounds) icon := element.icon() if icon != nil { iconBounds := icon.Bounds() offset := image.Pt ( (bounds.Dx() - iconBounds.Dx()) / 2, (bounds.Dy() - iconBounds.Dy()) / 2) icon.Draw ( destination, element.theme.Color(tomo.ColorForeground, state), bounds.Min.Add(offset)) } } func (element *Icon) icon () artist.Icon { return element.theme.Icon(element.id, element.size) } func (element *Icon) updateMinimumSize () { icon := element.icon() if icon == nil { element.entity.SetMinimumSize(0, 0) } else { bounds := icon.Bounds() element.entity.SetMinimumSize(bounds.Dx(), bounds.Dy()) } }