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tomo-old/elements/testing/mouse.go

71 lines
2.0 KiB
Go

package testing
import "image"
import "image/color"
import "git.tebibyte.media/sashakoshka/tomo/input"
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.draw)
element.core.SetMinimumSize(32, 32)
element.color = artist.NewUniform(color.Black)
return
}
func (element *Mouse) draw () {
bounds := element.Bounds()
pattern, _ := theme.AccentPattern(theme.PatternState { })
artist.FillRectangle(element, pattern, bounds)
artist.StrokeRectangle (
element,
artist.NewUniform(color.Black), 1,
bounds)
artist.Line (
element, artist.NewUniform(color.White), 1,
bounds.Min.Add(image.Pt(1, 1)),
bounds.Min.Add(image.Pt(bounds.Dx() - 2, bounds.Dy() - 2)))
artist.Line (
element, artist.NewUniform(color.White), 1,
bounds.Min.Add(image.Pt(1, bounds.Dy() - 2)),
bounds.Min.Add(image.Pt(bounds.Dx() - 2, 1)))
}
func (element *Mouse) HandleMouseDown (x, y int, button input.Button) {
element.drawing = true
element.lastMousePos = image.Pt(x, y)
}
func (element *Mouse) HandleMouseUp (x, y int, button input.Button) {
element.drawing = false
mousePos := image.Pt(x, y)
element.core.DamageRegion (artist.Line (
element, element.color, 1,
element.lastMousePos, mousePos))
element.lastMousePos = mousePos
}
func (element *Mouse) HandleMouseMove (x, y int) {
if !element.drawing { return }
mousePos := image.Pt(x, y)
element.core.DamageRegion (artist.Line (
element, element.color, 1,
element.lastMousePos, mousePos))
element.lastMousePos = mousePos
}
func (element *Mouse) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }