package testing import "image" import "image/color" 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" // Mouse is an element capable of testing mouse input. When the mouse is clicked // and dragged on it, it draws a trail. type Mouse struct { *core.Core core core.CoreControl drawing bool color artist.Pattern lastMousePos image.Point } // NewMouse creates a new mouse test element. func NewMouse () (element *Mouse) { element = &Mouse { } element.Core, element.core = core.NewCore(element) element.core.SetMinimumSize(32, 32) element.color = artist.NewUniform(color.Black) return } func (element *Mouse) Handle (event tomo.Event) { switch event.(type) { case tomo.EventResize: resizeEvent := event.(tomo.EventResize) element.core.AllocateCanvas ( resizeEvent.Width, resizeEvent.Height) artist.FillRectangle ( element.core, theme.AccentPattern(), element.Bounds()) artist.StrokeRectangle ( element.core, artist.NewUniform(color.Black), 1, element.Bounds()) artist.Line ( element.core, artist.NewUniform(color.White), 3, image.Pt(1, 1), image.Pt(resizeEvent.Width - 2, resizeEvent.Height - 2)) artist.Line ( element.core, artist.NewUniform(color.White), 1, image.Pt(1, resizeEvent.Height - 2), image.Pt(resizeEvent.Width - 2, 1)) case tomo.EventMouseDown: element.drawing = true mouseDownEvent := event.(tomo.EventMouseDown) element.lastMousePos = image.Pt ( mouseDownEvent.X, mouseDownEvent.Y) case tomo.EventMouseUp: element.drawing = false mouseUpEvent := event.(tomo.EventMouseUp) mousePos := image.Pt ( mouseUpEvent.X, mouseUpEvent.Y) element.core.PushRegion (artist.Line ( element.core, element.color, 1, element.lastMousePos, mousePos)) element.lastMousePos = mousePos case tomo.EventMouseMove: if !element.drawing { return } mouseMoveEvent := event.(tomo.EventMouseMove) mousePos := image.Pt ( mouseMoveEvent.X, mouseMoveEvent.Y) element.core.PushRegion (artist.Line ( element.core, element.color, 1, element.lastMousePos, mousePos)) element.lastMousePos = mousePos } return }