72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
package testing
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import "image"
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import "image/color"
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import "git.tebibyte.media/sashakoshka/tomo"
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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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// Mouse is an element capable of testing mouse input. When the mouse is clicked
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// and dragged on it, it draws a trail.
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type Mouse struct {
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*core.Core
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core core.CoreControl
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drawing bool
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color artist.Pattern
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lastMousePos image.Point
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}
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// NewMouse creates a new mouse test element.
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func NewMouse () (element *Mouse) {
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element = &Mouse { }
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element.Core, element.core = core.NewCore(element)
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element.core.SetMinimumSize(32, 32)
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element.color = artist.NewUniform(color.Black)
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return
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}
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func (element *Mouse) Resize (width, height int) {
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element.core.AllocateCanvas(width, height)
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bounds := element.Bounds()
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pattern, _ := theme.AccentPattern(theme.PatternState { })
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artist.FillRectangle(element.core, pattern, bounds)
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artist.StrokeRectangle (
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element.core,
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artist.NewUniform(color.Black), 1,
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bounds)
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artist.Line (
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element.core, artist.NewUniform(color.White), 1,
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image.Pt(1, 1),
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image.Pt(bounds.Dx() - 2, bounds.Dy() - 2))
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artist.Line (
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element.core, artist.NewUniform(color.White), 1,
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image.Pt(1, bounds.Dy() - 2),
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image.Pt(bounds.Dx() - 2, 1))
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}
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func (element *Mouse) HandleMouseDown (x, y int, button tomo.Button) {
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element.drawing = true
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element.lastMousePos = image.Pt(x, y)
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}
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func (element *Mouse) HandleMouseUp (x, y int, button tomo.Button) {
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element.drawing = false
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mousePos := image.Pt(x, y)
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element.core.DamageRegion (artist.Line (
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element.core, element.color, 1,
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element.lastMousePos, mousePos))
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element.lastMousePos = mousePos
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}
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func (element *Mouse) HandleMouseMove (x, y int) {
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if !element.drawing { return }
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mousePos := image.Pt(x, y)
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element.core.DamageRegion (artist.Line (
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element.core, element.color, 1,
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element.lastMousePos, mousePos))
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element.lastMousePos = mousePos
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}
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func (element *Mouse) HandleMouseScroll (x, y int, deltaX, deltaY float64) { }
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