74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
|
package views
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"image"
|
||
|
|
|
||
|
|
"git.milar.in/milarin/gui"
|
||
|
|
)
|
||
|
|
|
||
|
|
type ScrollbarView struct {
|
||
|
|
gui.ViewTmpl
|
||
|
|
Orientation gui.Orientation
|
||
|
|
Thickness int
|
||
|
|
|
||
|
|
ViewSize int
|
||
|
|
ViewportPos int
|
||
|
|
ViewportSize int
|
||
|
|
|
||
|
|
width, height int
|
||
|
|
}
|
||
|
|
|
||
|
|
var _ gui.View = &ScrollbarView{}
|
||
|
|
|
||
|
|
func NewScrollbarView(orientation gui.Orientation) *ScrollbarView {
|
||
|
|
return &ScrollbarView{
|
||
|
|
Orientation: orientation,
|
||
|
|
Thickness: 15,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *ScrollbarView) Layout(ctx gui.AppContext) (prefWidth, prefHeight int) {
|
||
|
|
if v.Orientation == gui.Horizontal {
|
||
|
|
return -1, v.Thickness
|
||
|
|
}
|
||
|
|
return v.Thickness, -1
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *ScrollbarView) Draw(img *gui.Image, ctx gui.AppContext) {
|
||
|
|
v.ViewTmpl.Draw(img, ctx)
|
||
|
|
v.width, v.height = img.Bounds().Dx(), img.Bounds().Dy()
|
||
|
|
|
||
|
|
var x, y, w, h int
|
||
|
|
|
||
|
|
if v.Orientation == gui.Vertical {
|
||
|
|
x = img.Bounds().Min.X
|
||
|
|
y = img.Bounds().Min.Y + v.ViewportPos*img.Bounds().Dy()/v.ViewSize
|
||
|
|
w = img.Bounds().Max.X
|
||
|
|
h = v.ViewportSize*img.Bounds().Dy()/v.ViewSize + 1
|
||
|
|
} else if v.Orientation == gui.Horizontal {
|
||
|
|
x = img.Bounds().Min.X + v.ViewportPos*img.Bounds().Dx()/v.ViewSize
|
||
|
|
y = img.Bounds().Min.Y
|
||
|
|
w = v.ViewportSize*img.Bounds().Dx()/v.ViewSize + 1
|
||
|
|
h = img.Bounds().Max.Y
|
||
|
|
}
|
||
|
|
|
||
|
|
img.DrawRect(image.Rect(x, y, x+w, y+h), v.Foreground(ctx))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *ScrollbarView) OnMouseMove(event gui.MouseEvent) (consumed bool) {
|
||
|
|
if v.Orientation == gui.Vertical {
|
||
|
|
y := v.ViewportPos * v.height / v.ViewSize
|
||
|
|
h := v.ViewportSize*v.height/v.ViewSize + 1
|
||
|
|
|
||
|
|
fmt.Println(event.Buttons)
|
||
|
|
// TODO because MouseMove is only fired when mouse is moved, JustPressed button events don't work
|
||
|
|
|
||
|
|
if event.Position.Y > y && event.Position.Y < y+h && event.JustPressed(gui.MouseButtonLeft) {
|
||
|
|
fmt.Println("move start")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true
|
||
|
|
}
|