func NewProjectOpener(theme gxui.Theme, projPane gxui.Control) *ProjectOpener {
return &ProjectOpener{
statusKeeper: statusKeeper{theme: theme},
name: theme.CreateTextBox(),
projPane: projPane,
}
}
func (l *DropDownList) Init(outer DropDownListOuter, theme gxui.Theme) {
l.outer = outer
l.Container.Init(outer, theme)
l.BackgroundBorderPainter.Init(outer)
l.Focusable.Init(outer)
l.theme = theme
l.list = theme.CreateList()
l.list.OnSelectionChanged(func(item gxui.AdapterItem) {
l.outer.RemoveAll()
adapter := l.list.Adapter()
if item != nil && adapter != nil {
l.selected = l.AddChild(adapter.Create(l.theme, adapter.ItemIndex(item)))
} else {
l.selected = nil
}
l.Relayout()
})
l.list.OnItemClicked(func(gxui.MouseEvent, gxui.AdapterItem) {
l.HideList()
})
l.list.OnKeyPress(func(ev gxui.KeyboardEvent) {
switch ev.Key {
case gxui.KeyEnter, gxui.KeyEscape:
l.HideList()
}
})
l.list.OnLostFocus(l.HideList)
l.OnDetach(l.HideList)
l.SetMouseEventTarget(true)
// Interface compliance test
_ = gxui.DropDownList(l)
}
func (t *TextBox) Init(outer TextBoxOuter, driver gxui.Driver, theme gxui.Theme, font gxui.Font) {
t.List.Init(outer, theme)
t.Focusable.Init(outer)
t.outer = outer
t.driver = driver
t.font = font
t.onRedrawLines = gxui.CreateEvent(func() {})
t.controller = gxui.CreateTextBoxController()
t.adapter = &TextBoxAdapter{TextBox: t}
t.desiredWidth = 100
t.SetScrollBarEnabled(false) // Defaults to single line
t.OnGainedFocus(func() { t.onRedrawLines.Fire() })
t.OnLostFocus(func() { t.onRedrawLines.Fire() })
t.horizScroll = theme.CreateScrollBar()
t.horizScrollChild = t.AddChild(t.horizScroll)
t.horizScroll.SetOrientation(gxui.Horizontal)
t.horizScroll.OnScroll(func(from, to int) {
t.SetHorizOffset(from)
})
t.controller.OnTextChanged(func([]gxui.TextBoxEdit) {
t.onRedrawLines.Fire()
t.List.DataChanged(false)
})
t.controller.OnSelectionChanged(func() {
t.onRedrawLines.Fire()
})
t.List.SetAdapter(t.adapter)
// Interface compliance test
_ = gxui.TextBox(t)
}
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
}
func (defaultTreeControlCreator) Create(theme gxui.Theme, control gxui.Control, node *TreeToListNode) gxui.Control {
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: 2, R: 2, T: 1, B: 1})
btn.OnClick(func(ev gxui.MouseEvent) {
if ev.Button == gxui.MouseButtonLeft {
node.ToggleExpanded()
}
})
update := func() {
btn.SetVisible(!node.IsLeaf())
if node.IsExpanded() {
btn.SetText("-")
} else {
btn.SetText("+")
}
}
update()
gxui.WhileAttached(btn, node.OnChange, update)
ll.AddChild(btn)
ll.AddChild(control)
ll.SetPadding(math.Spacing{L: 16 * node.Depth()})
return ll
}
// 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 createIconButton(driver gxui.Driver, theme gxui.Theme, iconPath string) gxui.Button {
button := theme.CreateButton()
button.SetType(gxui.PushButton)
fileBytes, err := assets.Asset(iconPath)
if err != nil {
log.Printf("Error: Failed to read asset %s: %s", iconPath, err)
return button
}
f := bytes.NewBuffer(fileBytes)
src, _, err := image.Decode(f)
if err != nil {
log.Printf("Error: Failed to decode image %s: %s", iconPath, err)
return button
}
src = resize.Resize(24, 24, src, resize.Bilinear)
rgba := image.NewRGBA(src.Bounds())
draw.Draw(rgba, src.Bounds(), src, image.ZP, draw.Src)
texture := driver.CreateTexture(rgba, 1)
icon := theme.CreateImage()
icon.SetTexture(texture)
button.AddChild(icon)
return button
}
func (d *DrawPaint) Init(outer DrawPaintOuter, theme gxui.Theme) {
d.outer = outer
d.driver = theme.Driver()
if debugVerifyDetachOnGC {
runtime.SetFinalizer(d.outer, verifyDetach)
}
}
// Create implements gxui.TreeNode.
func (d directory) Create(theme gxui.Theme) gxui.Control {
_, name := filepath.Split(d.path)
if name == "" {
name = d.path
}
l := theme.CreateLabel()
l.SetText(name)
l.SetColor(directoryColor)
return l
}
func newCompletionLabel(theme gxui.Theme, color gxui.Color) *completionLabel {
l := &completionLabel{}
l.Init(l, theme, theme.DefaultMonospaceFont(), color)
l.SetMargin(math.Spacing{
T: 3,
R: 3,
})
l.SetHorizontalAlignment(gxui.AlignCenter)
l.padding = completionPadding
return l
}
func NewProjectsPane(driver gxui.Driver, theme gxui.Theme, projFrame gxui.Control) *Projects {
pane := &Projects{
theme: theme,
projectFrame: projFrame,
button: createIconButton(driver, theme, "projects.png"),
projects: theme.CreateList(),
projectsAdapter: gxui.CreateDefaultAdapter(),
}
pane.projectsAdapter.SetItems(settings.Projects())
pane.projects.SetAdapter(pane.projectsAdapter)
return pane
}
func (a *filesAdapter) Create(theme gxui.Theme, index int) gxui.Control {
path := a.files[index]
_, name := filepath.Split(path)
label := theme.CreateLabel()
label.SetText(name)
if fi, err := os.Stat(path); err == nil && fi.IsDir() {
label.SetColor(directoryColor)
} else {
label.SetColor(fileColor)
}
return label
}
// Create a PanelHolder with a 3 panels
func panelHolder(name string, theme gxui.Theme) gxui.PanelHolder {
label := func(text string) gxui.Label {
label := theme.CreateLabel()
label.SetText(text)
return label
}
holder := theme.CreatePanelHolder()
holder.AddPanel(label(name+" 0 content"), name+" 0 panel")
holder.AddPanel(label(name+" 1 content"), name+" 1 panel")
holder.AddPanel(label(name+" 2 content"), name+" 2 panel")
return holder
}
func (e *editor) CreateLine(theme gxui.Theme, index int) (mixins.TextBoxLine, gxui.Control) {
lineNumber := theme.CreateLabel()
lineNumber.SetText(fmt.Sprintf("%4d", index+1))
line := &mixins.CodeEditorLine{}
line.Init(line, theme, &e.CodeEditor, index)
layout := theme.CreateLinearLayout()
layout.SetDirection(gxui.LeftToRight)
layout.AddChild(lineNumber)
layout.AddChild(line)
return line, layout
}
// mixins.TextBox overrides
func (e *CodeEditor) CreateLine(theme gxui.Theme, index int) (TextBoxLine, gxui.Control) {
lineNumber := theme.CreateLabel()
lineNumber.SetText(fmt.Sprintf("%.4d", index+1)) // Displayed lines start at 1
line := &CodeEditorLine{}
line.Init(line, theme, e, index)
layout := theme.CreateLinearLayout()
layout.SetDirection(gxui.LeftToRight)
layout.AddChild(lineNumber)
layout.AddChild(line)
return line, layout
}
func (p *PanelHolder) Init(outer PanelHolderOuter, theme gxui.Theme) {
p.Container.Init(outer, theme)
p.outer = outer
p.theme = theme
p.tabLayout = theme.CreateLinearLayout()
p.tabLayout.SetDirection(gxui.LeftToRight)
p.Container.AddChild(p.tabLayout)
p.SetMargin(math.Spacing{L: 1, T: 2, R: 1, B: 1})
p.SetMouseEventTarget(true) // For drag-drop targets
// Interface compliance test
_ = gxui.PanelHolder(p)
}
func newCommandBox(driver gxui.Driver, theme gxui.Theme, controller Controller) *commandBox {
box := &commandBox{
driver: driver,
controller: controller,
}
box.label = theme.CreateLabel()
box.label.SetColor(cmdColor)
box.LinearLayout.Init(box, theme)
box.SetDirection(gxui.LeftToRight)
box.AddChild(box.label)
box.Clear()
return box
}
func (n *genericNode) Init(outer mixins.LinearLayoutOuter, driver gxui.Driver, theme gxui.Theme, name string, color gxui.Color) {
n.LinearLayout.Init(outer, theme)
n.driver = driver
n.theme = theme
n.SetDirection(gxui.TopToBottom)
n.button = newTreeButton(driver, theme.(*basic.Theme), name)
n.button.Label().SetColor(color)
n.LinearLayout.AddChild(n.button)
n.children = theme.CreateLinearLayout()
n.children.SetDirection(gxui.TopToBottom)
n.children.SetMargin(math.Spacing{L: 10})
}
func NewGotoLine(theme gxui.Theme) *GotoLine {
input := theme.CreateTextBox()
input.OnTextChanged(func([]gxui.TextBoxEdit) {
runes := []rune(input.Text())
for index := 0; index < len(runes); index++ {
if !unicode.IsDigit(runes[index]) {
runes = append(runes[:index], runes[index+1:]...)
index--
}
}
text := string(runes)
if text != input.Text() {
input.SetText(text)
}
})
return &GotoLine{
statusKeeper: statusKeeper{theme: theme},
lineNumInput: input,
}
}
func (l *List) Init(outer ListOuter, theme gxui.Theme) {
l.outer = outer
l.Container.Init(outer, theme)
l.BackgroundBorderPainter.Init(outer)
l.Focusable.Init(outer)
l.theme = theme
l.scrollBar = theme.CreateScrollBar()
l.scrollBarChild = l.AddChild(l.scrollBar)
l.scrollBarEnabled = true
l.scrollBar.OnScroll(func(from, to int) { l.SetScrollOffset(from) })
l.SetOrientation(gxui.Vertical)
l.SetBackgroundBrush(gxui.TransparentBrush)
l.SetMouseEventTarget(true)
l.details = make(map[gxui.AdapterItem]itemDetails)
// Interface compliance test
_ = gxui.List(l)
}
func (l *ScrollLayout) Init(outer ScrollLayoutOuter, theme gxui.Theme) {
l.Container.Init(outer, theme)
l.BackgroundBorderPainter.Init(outer)
l.outer = outer
l.theme = theme
l.canScrollX = true
l.canScrollY = true
scrollBarX := theme.CreateScrollBar()
scrollBarX.SetOrientation(gxui.Horizontal)
scrollBarX.OnScroll(func(from, to int) { l.SetScrollOffset(math.Point{X: from, Y: l.scrollOffset.Y}) })
scrollBarY := theme.CreateScrollBar()
scrollBarY.SetOrientation(gxui.Vertical)
scrollBarY.OnScroll(func(from, to int) { l.SetScrollOffset(math.Point{X: l.scrollOffset.X, Y: from}) })
l.scrollBarX = l.AddChild(scrollBarX)
l.scrollBarY = l.AddChild(scrollBarY)
l.SetMouseEventTarget(true)
// Interface compliance test
_ = gxui.ScrollLayout(l)
}
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
}
// Create implements gxui.TreeNode.
func (n *node) Create(theme gxui.Theme) gxui.Control {
layout := theme.CreateLinearLayout()
layout.SetDirection(gxui.LeftToRight)
label := theme.CreateLabel()
label.SetText(n.name)
textbox := theme.CreateTextBox()
textbox.SetText(n.name)
textbox.SetPadding(math.ZeroSpacing)
textbox.SetMargin(math.ZeroSpacing)
addButton := theme.CreateButton()
addButton.SetText("+")
addButton.OnClick(func(gxui.MouseEvent) { n.add("<new>") })
edit := func() {
layout.RemoveAll()
layout.AddChild(textbox)
layout.AddChild(addButton)
gxui.SetFocus(textbox)
}
commit := func() {
n.name = textbox.Text()
label.SetText(n.name)
layout.RemoveAll()
layout.AddChild(label)
layout.AddChild(addButton)
}
// When the user clicks the label, replace it with an editable text-box
label.OnClick(func(gxui.MouseEvent) { edit() })
// When the text-box loses focus, replace it with a label again.
textbox.OnLostFocus(commit)
layout.AddChild(label)
layout.AddChild(addButton)
return layout
}
// Number picker uses the gxui.DefaultAdapter for driving a list
func numberPicker(theme gxui.Theme, overlay gxui.BubbleOverlay) gxui.Control {
items := []string{
"zero", "one", "two", "three", "four", "five",
"six", "seven", "eight", "nine", "ten",
"eleven", "twelve", "thirteen", "fourteen", "fifteen",
"sixteen", "seventeen", "eighteen", "nineteen", "twenty",
}
adapter := gxui.CreateDefaultAdapter()
adapter.SetItems(items)
layout := theme.CreateLinearLayout()
layout.SetDirection(gxui.TopToBottom)
label0 := theme.CreateLabel()
label0.SetText("Numbers:")
layout.AddChild(label0)
dropList := theme.CreateDropDownList()
dropList.SetAdapter(adapter)
dropList.SetBubbleOverlay(overlay)
layout.AddChild(dropList)
list := theme.CreateList()
list.SetAdapter(adapter)
list.SetOrientation(gxui.Vertical)
layout.AddChild(list)
label1 := theme.CreateLabel()
label1.SetMargin(math.Spacing{T: 30})
label1.SetText("Selected number:")
layout.AddChild(label1)
selected := theme.CreateLabel()
layout.AddChild(selected)
dropList.OnSelectionChanged(func(item gxui.AdapterItem) {
if list.Selected() != item {
list.Select(item)
}
})
list.OnSelectionChanged(func(item gxui.AdapterItem) {
if dropList.Selected() != item {
dropList.Select(item)
}
selected.SetText(fmt.Sprintf("%s - %d", item, adapter.ItemIndex(item)))
})
return layout
}
func (a *fsAdapter) create(theme gxui.Theme, path string) gxui.Label {
label := theme.CreateLabel()
label.SetText(filepath.Base(path))
return label
}
func (a *fsAdapter) Size(theme gxui.Theme) math.Size {
return math.Size{
W: 20 * theme.DefaultMonospaceFont().GlyphMaxSize().W,
H: theme.DefaultMonospaceFont().GlyphMaxSize().H,
}
}
// Override directory.Create so that the full root is shown, unaltered.
func (a directoryAdapter) Create(theme gxui.Theme, index int) gxui.Control {
l := theme.CreateLabel()
l.SetText(a.subdirs[index])
l.SetColor(directoryColor)
return l
}
func (l *Layoutable) Init(outer LayoutableOuter, theme gxui.Theme) {
l.outer = outer
l.driver = theme.Driver()
}