// Color picker uses the customAdapter for driving a list
func colorPicker(theme gxui.Theme) gxui.Control {
layout := theme.CreateLinearLayout()
layout.SetDirection(gxui.TopToBottom)
label0 := theme.CreateLabel()
label0.SetText("Color palette:")
layout.AddChild(label0)
adapter := &customAdapter{}
list := theme.CreateList()
list.SetAdapter(adapter)
list.SetOrientation(gxui.Horizontal)
layout.AddChild(list)
label1 := theme.CreateLabel()
label1.SetMargin(math.Spacing{T: 30})
label1.SetText("Selected color:")
layout.AddChild(label1)
selected := theme.CreateImage()
selected.SetExplicitSize(math.Size{W: 32, H: 32})
layout.AddChild(selected)
list.OnSelectionChanged(func(item gxui.AdapterItem) {
if item != nil {
control := list.ItemControl(item)
selected.SetBackgroundBrush(control.(gxui.Image).BackgroundBrush())
}
})
return layout
}
func (a *customAdapter) Create(theme gxui.Theme, index int) gxui.Control {
phase := float32(index) / 1000
c := gxui.Color{
R: 0.5 + 0.5*math.Sinf(math.TwoPi*(phase+0.000)),
G: 0.5 + 0.5*math.Sinf(math.TwoPi*(phase+0.333)),
B: 0.5 + 0.5*math.Sinf(math.TwoPi*(phase+0.666)),
A: 1.0,
}
i := theme.CreateImage()
i.SetBackgroundBrush(gxui.CreateBrush(c))
i.SetMargin(math.Spacing{L: 3, T: 3, R: 3, B: 3})
i.OnMouseEnter(func(ev gxui.MouseEvent) {
i.SetBorderPen(gxui.CreatePen(2, gxui.Gray80))
})
i.OnMouseExit(func(ev gxui.MouseEvent) {
i.SetBorderPen(gxui.TransparentPen)
})
i.OnMouseDown(func(ev gxui.MouseEvent) {
i.SetBackgroundBrush(gxui.CreateBrush(c.MulRGB(0.7)))
})
i.OnMouseUp(func(ev gxui.MouseEvent) {
i.SetBackgroundBrush(gxui.CreateBrush(c))
})
return i
}
//画行走路线
func drawWalkPath(window gxui.Window, theme gxui.Theme, driver gxui.Driver, x1, y1, x2, y2 int64) {
ps, isWalk := nm.FindPath(nmastar, x1, y1, x2, y2)
if !isWalk {
return
}
canvas := driver.CreateCanvas(math.Size{W: int(nmj.Width), H: int(nmj.Heigth)})
var polys []gxui.PolygonVertex
for i := 0; i < len(ps); i++ {
polys = append(polys,
gxui.PolygonVertex{
Position: math.Point{
int(ps[i].X),
int(ps[i].Y),
}})
}
canvas.DrawLines(polys, gxui.CreatePen(2, gxui.Green))
canvas.Complete()
image := theme.CreateImage()
image.SetCanvas(canvas)
window.AddChild(image)
}
func buildMoon(theme gxui.Theme, center math.Point, radius float32) gxui.Image {
c := 40
p := make(gxui.Polygon, c*2)
for i := 0; i < c; i++ {
frac := float32(i) / float32(c)
α := math.Lerpf(math.Pi*1.2, math.Pi*-0.2, frac)
p[i] = gxui.PolygonVertex{
Position: math.Point{
X: center.X + int(radius*math.Sinf(α)),
Y: center.Y + int(radius*math.Cosf(α)),
},
RoundedRadius: 0,
}
}
for i := 0; i < c; i++ {
frac := float32(i) / float32(c)
α := math.Lerpf(math.Pi*-0.2, math.Pi*1.2, frac)
r := math.Lerpf(radius, radius*0.5, math.Sinf(frac*math.Pi))
p[i+c] = gxui.PolygonVertex{
Position: math.Point{
X: center.X + int(r*math.Sinf(α)),
Y: center.Y + int(r*math.Cosf(α)),
},
RoundedRadius: 0,
}
}
image := theme.CreateImage()
image.SetPolygon(p, gxui.CreatePen(3, gxui.Gray80), gxui.CreateBrush(gxui.Gray40))
return image
}
func (treeControlCreator) Create(theme gxui.Theme, control gxui.Control, node *mixins.TreeToListNode) gxui.Control {
img := theme.CreateImage()
imgSize := math.Size{W: 10, H: 10}
ll := theme.CreateLinearLayout()
ll.SetDirection(gxui.LeftToRight)
btn := theme.CreateButton()
btn.SetBackgroundBrush(gxui.TransparentBrush)
btn.SetBorderPen(gxui.CreatePen(1, gxui.Gray30))
btn.SetMargin(math.Spacing{L: 1, R: 1, T: 1, B: 1})
btn.OnClick(func(ev gxui.MouseEvent) {
if ev.Button == gxui.MouseButtonLeft {
node.ToggleExpanded()
}
})
btn.AddChild(img)
update := func() {
expanded := node.IsExpanded()
canvas := theme.Driver().CreateCanvas(imgSize)
btn.SetVisible(!node.IsLeaf())
switch {
case !btn.IsMouseDown(gxui.MouseButtonLeft) && expanded:
canvas.DrawPolygon(expandedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray70))
case !btn.IsMouseDown(gxui.MouseButtonLeft) && !expanded:
canvas.DrawPolygon(collapsedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray70))
case expanded:
canvas.DrawPolygon(expandedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
case !expanded:
canvas.DrawPolygon(collapsedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
}
canvas.Complete()
img.SetCanvas(canvas)
}
btn.OnMouseDown(func(gxui.MouseEvent) { update() })
btn.OnMouseUp(func(gxui.MouseEvent) { update() })
update()
gxui.WhileAttached(btn, node.OnChange, update)
ll.AddChild(btn)
ll.AddChild(control)
ll.SetPadding(math.Spacing{L: 16 * node.Depth()})
return ll
}
func buildStar(theme gxui.Theme, center math.Point, radius, rotation float32, points int) gxui.Image {
p := make(gxui.Polygon, points*2)
for i := 0; i < points*2; i++ {
frac := float32(i) / float32(points*2)
α := frac*math.TwoPi + rotation
r := []float32{radius, radius / 2}[i&1]
p[i] = gxui.PolygonVertex{
Position: math.Point{
X: center.X + int(r*math.Cosf(α)),
Y: center.Y + int(r*math.Sinf(α)),
},
RoundedRadius: []float32{0, 50}[i&1],
}
}
image := theme.CreateImage()
image.SetPolygon(p, gxui.CreatePen(3, gxui.Red), gxui.CreateBrush(gxui.Yellow))
return image
}
func (t *Tree) CreateExpandButton(theme gxui.Theme, node *mixins.TreeInternalNode) gxui.Button {
img := theme.CreateImage()
imgSize := math.Size{W: 10, H: 10}
btn := theme.CreateButton()
btn.SetBackgroundBrush(gxui.TransparentBrush)
btn.SetBorderPen(gxui.CreatePen(1, gxui.Gray30))
btn.SetMargin(math.Spacing{L: 1, R: 1, T: 1, B: 1})
btn.OnClick(func(ev gxui.MouseEvent) {
if ev.Button == gxui.MouseButtonLeft {
if node.IsExpanded() {
node.Collapse()
} else {
node.Expand()
}
}
})
btn.AddChild(img)
updateStyle := func() {
canvas := theme.Driver().CreateCanvas(imgSize)
switch {
case !btn.IsMouseDown(gxui.MouseButtonLeft) && node.IsExpanded():
canvas.DrawPolygon(expandedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray70))
case !btn.IsMouseDown(gxui.MouseButtonLeft) && !node.IsExpanded():
canvas.DrawPolygon(collapsedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray70))
case node.IsExpanded():
canvas.DrawPolygon(expandedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
case !node.IsExpanded():
canvas.DrawPolygon(collapsedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
}
canvas.Complete()
img.SetCanvas(canvas)
}
btn.OnMouseDown(func(gxui.MouseEvent) { updateStyle() })
btn.OnMouseUp(func(gxui.MouseEvent) { updateStyle() })
node.OnExpandedChanged(func(e bool) { updateStyle() })
updateStyle()
return btn
}