func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
label := theme.CreateLabel()
label.SetText("This is a progress bar:")
progressBar := theme.CreateProgressBar()
progressBar.SetDesiredSize(math.Size{W: 400, H: 20})
progressBar.SetTarget(100)
layout := theme.CreateLinearLayout()
layout.AddChild(label)
layout.AddChild(progressBar)
layout.SetHorizontalAlignment(gxui.AlignCenter)
window := theme.CreateWindow(800, 600, "Progress bar")
window.SetScale(flags.DefaultScaleFactor)
window.AddChild(layout)
window.OnClose(driver.Terminate)
progress := 0
pause := time.Millisecond * 500
var timer *time.Timer
timer = time.AfterFunc(pause, func() {
driver.Call(func() {
progress = (progress + 3) % progressBar.Target()
progressBar.SetProgress(progress)
timer.Reset(pause)
})
})
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
// ┌───────┐║┌───────┐
// │ │║│ │
// │ A │║│ B │
// │ │║│ │
// └───────┘║└───────┘
// ═══════════════════
// ┌───────┐║┌───────┐
// │ │║│ │
// │ C │║│ D │
// │ │║│ │
// └───────┘║└───────┘
splitterAB := theme.CreateSplitterLayout()
splitterAB.SetOrientation(gxui.Horizontal)
splitterAB.AddChild(panelHolder("A", theme))
splitterAB.AddChild(panelHolder("B", theme))
splitterCD := theme.CreateSplitterLayout()
splitterCD.SetOrientation(gxui.Horizontal)
splitterCD.AddChild(panelHolder("C", theme))
splitterCD.AddChild(panelHolder("D", theme))
vSplitter := theme.CreateSplitterLayout()
vSplitter.SetOrientation(gxui.Vertical)
vSplitter.AddChild(splitterAB)
vSplitter.AddChild(splitterCD)
window := theme.CreateWindow(800, 600, "Panels")
window.SetScale(flags.DefaultScaleFactor)
window.AddChild(vSplitter)
window.OnClose(driver.Terminate)
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
overlay := theme.CreateBubbleOverlay()
holder := theme.CreatePanelHolder()
holder.AddPanel(numberPicker(theme, overlay), "Default adapter")
holder.AddPanel(colorPicker(theme), "Custom adapter")
window := theme.CreateWindow(800, 600, "Lists")
window.SetScale(flags.DefaultScaleFactor)
window.AddChild(holder)
window.AddChild(overlay)
window.OnClose(driver.Terminate)
window.SetPadding(math.Spacing{L: 10, T: 10, R: 10, B: 10})
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
label1 := theme.CreateLabel()
label1.SetColor(gxui.White)
label1.SetText("1x1")
cell1x1 := theme.CreateLinearLayout()
cell1x1.SetBackgroundBrush(gxui.CreateBrush(gxui.Blue40))
cell1x1.SetHorizontalAlignment(gxui.AlignCenter)
cell1x1.AddChild(label1)
label2 := theme.CreateLabel()
label2.SetColor(gxui.White)
label2.SetText("2x1")
cell2x1 := theme.CreateLinearLayout()
cell2x1.SetBackgroundBrush(gxui.CreateBrush(gxui.Green40))
cell2x1.SetHorizontalAlignment(gxui.AlignCenter)
cell2x1.AddChild(label2)
label3 := theme.CreateLabel()
label3.SetColor(gxui.White)
label3.SetText("1x2")
cell1x2 := theme.CreateLinearLayout()
cell1x2.SetBackgroundBrush(gxui.CreateBrush(gxui.Red40))
cell1x2.SetHorizontalAlignment(gxui.AlignCenter)
cell1x2.AddChild(label3)
table := theme.CreateTableLayout()
table.SetGrid(3, 2) // columns, rows
// row, column, horizontal span, vertical span
table.SetChildAt(0, 0, 1, 1, cell1x1)
table.SetChildAt(0, 1, 2, 1, cell2x1)
table.SetChildAt(2, 0, 1, 2, cell1x2)
window := theme.CreateWindow(800, 600, "Table")
window.AddChild(table)
window.OnClose(driver.Terminate)
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
layout := theme.CreateLinearLayout()
layout.SetDirection(gxui.TopToBottom)
adapter := &adapter{}
// hook up node changed function to the adapter OnDataChanged event.
adapter.changed = func() { adapter.DataChanged(false) }
// add all the species to the 'Animals' root node.
items := addSpecies(adapter.add("Animals"))
tree := theme.CreateTree()
tree.SetAdapter(adapter)
tree.Select(items["Doves"])
tree.Show(tree.Selected())
layout.AddChild(tree)
row := theme.CreateLinearLayout()
row.SetDirection(gxui.LeftToRight)
layout.AddChild(row)
expandAll := theme.CreateButton()
expandAll.SetText("Expand All")
expandAll.OnClick(func(gxui.MouseEvent) { tree.ExpandAll() })
row.AddChild(expandAll)
collapseAll := theme.CreateButton()
collapseAll.SetText("Collapse All")
collapseAll.OnClick(func(gxui.MouseEvent) { tree.CollapseAll() })
row.AddChild(collapseAll)
window := theme.CreateWindow(800, 600, "Tree view")
window.SetScale(flags.DefaultScaleFactor)
window.AddChild(layout)
window.OnClose(driver.Terminate)
window.SetPadding(math.Spacing{L: 10, T: 10, R: 10, B: 10})
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
window := theme.CreateWindow(800, 600, "Polygon")
window.SetScale(flags.DefaultScaleFactor)
canvas := driver.CreateCanvas(math.Size{W: 1000, H: 1000})
drawStar(canvas, math.Point{X: 100, Y: 100}, 50, 0.2, 6)
drawStar(canvas, math.Point{X: 650, Y: 170}, 70, 0.5, 7)
drawStar(canvas, math.Point{X: 40, Y: 300}, 20, 0, 5)
drawStar(canvas, math.Point{X: 410, Y: 320}, 25, 0.9, 5)
drawStar(canvas, math.Point{X: 220, Y: 520}, 45, 0, 6)
drawMoon(canvas, math.Point{X: 400, Y: 300}, 200)
canvas.Complete()
image := theme.CreateImage()
image.SetCanvas(canvas)
window.AddChild(image)
window.OnClose(driver.Terminate)
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
window := theme.CreateWindow(200, 150, "Window")
window.OnClose(driver.Terminate)
window.SetScale(flags.DefaultScaleFactor)
window.SetPadding(math.Spacing{L: 10, R: 10, T: 10, B: 10})
button := theme.CreateButton()
button.SetHorizontalAlignment(gxui.AlignCenter)
button.SetSizeMode(gxui.Fill)
toggle := func() {
fullscreen := !window.Fullscreen()
window.SetFullscreen(fullscreen)
if fullscreen {
button.SetText("Make windowed")
} else {
button.SetText("Make fullscreen")
}
}
button.SetText("Make fullscreen")
button.OnClick(func(gxui.MouseEvent) { toggle() })
window.AddChild(button)
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
font, err := driver.CreateFont(gxfont.Default, 75)
if err != nil {
panic(err)
}
window := theme.CreateWindow(380, 100, "Hi")
window.SetBackgroundBrush(gxui.CreateBrush(gxui.Gray50))
label := theme.CreateLabel()
label.SetFont(font)
label.SetText("Hello world")
window.AddChild(label)
ticker := time.NewTicker(time.Millisecond * 30)
go func() {
phase := float32(0)
for _ = range ticker.C {
c := gxui.Color{
R: 0.75 + 0.25*math.Cosf((phase+0.000)*math.TwoPi),
G: 0.75 + 0.25*math.Cosf((phase+0.333)*math.TwoPi),
B: 0.75 + 0.25*math.Cosf((phase+0.666)*math.TwoPi),
A: 0.50 + 0.50*math.Cosf(phase*10),
}
phase += 0.01
driver.Call(func() {
label.SetColor(c)
})
}
}()
window.OnClose(ticker.Stop)
window.OnClose(driver.Terminate)
}
func appMain(driver gxui.Driver) {
args := flag.Args()
if len(args) != 1 {
fmt.Print("usage: image_viewer image-path\n")
os.Exit(1)
}
file := args[0]
f, err := os.Open(file)
if err != nil {
fmt.Printf("Failed to open image '%s': %v\n", file, err)
os.Exit(1)
}
source, _, err := image.Decode(f)
if err != nil {
fmt.Printf("Failed to read image '%s': %v\n", file, err)
os.Exit(1)
}
theme := flags.CreateTheme(driver)
img := theme.CreateImage()
mx := source.Bounds().Max
window := theme.CreateWindow(mx.X, mx.Y, "Image viewer")
window.SetScale(flags.DefaultScaleFactor)
window.AddChild(img)
// Copy the image to a RGBA format before handing to a gxui.Texture
rgba := image.NewRGBA(source.Bounds())
draw.Draw(rgba, source.Bounds(), source, image.ZP, draw.Src)
texture := driver.CreateTexture(rgba, 1)
img.SetTexture(texture)
window.OnClose(driver.Terminate)
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
window := theme.CreateWindow(800, 600, "Open file...")
window.SetScale(flags.DefaultScaleFactor)
// fullpath is the textbox at the top of the window holding the current
// selection's absolute file path.
fullpath := theme.CreateTextBox()
fullpath.SetDesiredWidth(math.MaxSize.W)
// directories is the Tree of directories on the left of the window.
// It uses the directoryAdapter to show the entire system's directory
// hierarchy.
directories := theme.CreateTree()
directories.SetAdapter(&directoryAdapter{
directory: directory{
subdirs: roots.Roots(),
},
})
// filesAdapter is the adapter used to show the currently selected directory's
// content. The adapter has its data changed whenever the selected directory
// changes.
filesAdapter := &filesAdapter{}
// files is the List of files in the selected directory to the right of the
// window.
files := theme.CreateList()
files.SetAdapter(filesAdapter)
open := theme.CreateButton()
open.SetText("Open...")
open.OnClick(func(gxui.MouseEvent) {
fmt.Printf("File '%s' selected!\n", files.Selected())
window.Close()
})
// If the user hits the enter key while the fullpath control has focus,
// attempt to select the directory.
fullpath.OnKeyDown(func(ev gxui.KeyboardEvent) {
if ev.Key == gxui.KeyEnter || ev.Key == gxui.KeyKpEnter {
path := fullpath.Text()
if directories.Select(path) {
directories.Show(path)
}
}
})
// When the directory selection changes, update the files list
directories.OnSelectionChanged(func(item gxui.AdapterItem) {
dir := item.(string)
filesAdapter.SetFiles(filesAt(dir))
fullpath.SetText(dir)
})
// When the file selection changes, update the fullpath text
files.OnSelectionChanged(func(item gxui.AdapterItem) {
fullpath.SetText(item.(string))
})
// When the user double-clicks a directory in the file list, select it in the
// directories tree view.
files.OnDoubleClick(func(gxui.MouseEvent) {
if path, ok := files.Selected().(string); ok {
if fi, err := os.Stat(path); err == nil && fi.IsDir() {
if directories.Select(path) {
directories.Show(path)
}
} else {
fmt.Printf("File '%s' selected!\n", path)
window.Close()
}
}
})
// Start with the CWD selected and visible.
if cwd, err := os.Getwd(); err == nil {
if directories.Select(cwd) {
directories.Show(directories.Selected())
}
}
splitter := theme.CreateSplitterLayout()
splitter.SetOrientation(gxui.Horizontal)
splitter.AddChild(directories)
splitter.AddChild(files)
topLayout := theme.CreateLinearLayout()
topLayout.SetDirection(gxui.TopToBottom)
topLayout.AddChild(fullpath)
topLayout.AddChild(splitter)
btmLayout := theme.CreateLinearLayout()
btmLayout.SetDirection(gxui.BottomToTop)
btmLayout.SetHorizontalAlignment(gxui.AlignRight)
btmLayout.AddChild(open)
btmLayout.AddChild(topLayout)
window.AddChild(btmLayout)
window.OnClose(driver.Terminate)
window.SetPadding(math.Spacing{L: 10, T: 10, R: 10, B: 10})
}
func appMain(driver gxui.Driver) {
theme := flags.CreateTheme(driver)
layout := theme.CreateLinearLayout()
layout.SetSizeMode(gxui.Fill)
buttonState := map[gxui.Button]func() bool{}
update := func() {
for button, f := range buttonState {
button.SetChecked(f())
}
}
button := func(name string, action func(), isSelected func() bool) gxui.Button {
b := theme.CreateButton()
b.SetText(name)
b.OnClick(func(gxui.MouseEvent) { action(); update() })
layout.AddChild(b)
buttonState[b] = isSelected
return b
}
button("TopToBottom",
func() { layout.SetDirection(gxui.TopToBottom) },
func() bool { return layout.Direction().TopToBottom() },
)
button("LeftToRight",
func() { layout.SetDirection(gxui.LeftToRight) },
func() bool { return layout.Direction().LeftToRight() },
)
button("BottomToTop",
func() { layout.SetDirection(gxui.BottomToTop) },
func() bool { return layout.Direction().BottomToTop() },
)
button("RightToLeft",
func() { layout.SetDirection(gxui.RightToLeft) },
func() bool { return layout.Direction().RightToLeft() },
)
button("AlignLeft",
func() { layout.SetHorizontalAlignment(gxui.AlignLeft) },
func() bool { return layout.HorizontalAlignment().AlignLeft() },
)
button("AlignCenter",
func() { layout.SetHorizontalAlignment(gxui.AlignCenter) },
func() bool { return layout.HorizontalAlignment().AlignCenter() },
)
button("AlignRight",
func() { layout.SetHorizontalAlignment(gxui.AlignRight) },
func() bool { return layout.HorizontalAlignment().AlignRight() },
)
button("AlignTop",
func() { layout.SetVerticalAlignment(gxui.AlignTop) },
func() bool { return layout.VerticalAlignment().AlignTop() },
)
button("AlignMiddle",
func() { layout.SetVerticalAlignment(gxui.AlignMiddle) },
func() bool { return layout.VerticalAlignment().AlignMiddle() },
)
button("AlignBottom",
func() { layout.SetVerticalAlignment(gxui.AlignBottom) },
func() bool { return layout.VerticalAlignment().AlignBottom() },
)
update()
window := theme.CreateWindow(800, 600, "Linear layout")
window.SetScale(flags.DefaultScaleFactor)
window.AddChild(layout)
window.OnClose(driver.Terminate)
window.SetPadding(math.Spacing{L: 10, T: 10, R: 10, B: 10})
}