package basic import "image" import "git.tebibyte.media/sashakoshka/tomo" import "git.tebibyte.media/sashakoshka/tomo/theme" import "git.tebibyte.media/sashakoshka/tomo/artist" import "git.tebibyte.media/sashakoshka/tomo/elements/core" // Label is a simple text box. type Label struct { *core.Core core core.CoreControl wrap bool text string drawer artist.TextDrawer } // NewLabel creates a new label. If wrap is set to true, the text inside will be // wrapped. func NewLabel (text string, wrap bool) (element *Label) { element = &Label { } element.Core, element.core = core.NewCore(element) face := theme.FontFaceRegular() element.drawer.SetFace(face) element.SetWrap(wrap) element.SetText(text) return } // Handle handles and event. func (element *Label) Handle (event tomo.Event) { switch event.(type) { case tomo.EventResize: resizeEvent := event.(tomo.EventResize) element.core.AllocateCanvas ( resizeEvent.Width, resizeEvent.Height) if element.wrap { element.drawer.SetMaxWidth (resizeEvent.Width) element.drawer.SetMaxHeight(resizeEvent.Height) } element.draw() } return } // SetText sets the label's text. func (element *Label) SetText (text string) { if element.text == text { return } element.text = text element.drawer.SetText(text) element.updateMinimumSize() if element.core.HasImage () { element.draw() element.core.PushAll() } } // SetWrap sets wether or not the label's text wraps. If the text is set to // wrap, the element will have a minimum size of a single character and // automatically wrap its text. If the text is set to not wrap, the element will // have a minimum size that fits its text. func (element *Label) SetWrap (wrap bool) { if wrap == element.wrap { return } if !wrap { element.drawer.SetMaxWidth(0) element.drawer.SetMaxHeight(0) } element.wrap = wrap element.updateMinimumSize() if element.core.HasImage () { element.draw() element.core.PushAll() } } func (element *Label) updateMinimumSize () { if element.wrap { em := element.drawer.Em().Round() if em < 1 { em = theme.Padding() } element.core.SetMinimumSize ( em, element.drawer.LineHeight().Round()) } else { bounds := element.drawer.LayoutBounds() element.core.SetMinimumSize(bounds.Dx(), bounds.Dy()) } } func (element *Label) draw () { bounds := element.core.Bounds() artist.FillRectangle ( element.core, theme.BackgroundPattern(), bounds) textBounds := element.drawer.LayoutBounds() foreground := theme.ForegroundPattern(true) element.drawer.Draw (element.core, foreground, image.Point { X: 0 - textBounds.Min.X, Y: 0 - textBounds.Min.Y, }) }