User interface toolkit for Go with support for SDL2 and HTML Canvas render targets.
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package main
import (
"git.kirsle.net/go/render"
"git.kirsle.net/go/render/sdl"
"git.kirsle.net/go/ui"
)
func init() {
sdl.DefaultFontFilename = "../DejaVuSans.ttf"
}
func main() {
mw, err := ui.NewMainWindow("Tooltip Demo", 800, 600)
if err != nil {
panic(err)
}
mw.SetBackground(render.White)
CreateButtons(mw, mw.Frame())
btn := ui.NewButton("Test", ui.NewLabel(ui.Label{
Text: "Click me",
Font: render.Text{
Size: 32,
},
}))
mw.Place(btn, ui.Place{
Center: true,
Middle: true,
})
ui.NewTooltip(btn, ui.Tooltip{
Text: "Hello world\nGoodbye mars!\nBlah blah blah...\nLOL",
Edge: ui.Right,
})
mw.MainLoop()
}
// CreateButtons creates a set of Placed buttons around all the edges and
// center of the parent frame.
func CreateButtons(window *ui.MainWindow, parent *ui.Frame) {
// Draw buttons around the edges of the window.
buttons := []struct {
Label string
Edge ui.Edge
Place ui.Place
}{
{
Label: "Top Left",
Edge: ui.Right,
Place: ui.Place{
Point: render.NewPoint(12, 12),
},
},
{
Label: "Top Middle",
Edge: ui.Bottom,
Place: ui.Place{
Top: 12,
Center: true,
},
},
{
Label: "Top Right",
Edge: ui.Left,
Place: ui.Place{
Top: 12,
Right: 12,
},
},
{
Label: "Left Middle",
Edge: ui.Right,
Place: ui.Place{
Left: 12,
Middle: true,
},
},
{
Label: "Center",
Edge: ui.Bottom,
Place: ui.Place{
Center: true,
Middle: true,
},
},
{
Label: "Right Middle",
Edge: ui.Left,
Place: ui.Place{
Right: 12,
Middle: true,
},
},
{
Label: "Bottom Left",
Edge: ui.Right,
Place: ui.Place{
Left: 12,
Bottom: 12,
},
},
{
Label: "Bottom Center",
Edge: ui.Top,
Place: ui.Place{
Bottom: 12,
Center: true,
},
},
{
Label: "Bottom Right",
Edge: ui.Left,
Place: ui.Place{
Bottom: 12,
Right: 12,
},
},
}
for _, setting := range buttons {
setting := setting
button := ui.NewButton(setting.Label, ui.NewLabel(ui.Label{
Text: setting.Label,
Font: render.Text{
FontFilename: "../DejaVuSans.ttf",
Size: 12,
Color: render.Black,
},
}))
// When clicked, change the window title to ID this button.
button.Handle(ui.Click, func(ed ui.EventData) error {
window.SetTitle(parent.Name + ": " + setting.Label)
return nil
})
// Tooltip for it.
ui.NewTooltip(button, ui.Tooltip{
Text: setting.Label + " Tooltip",
Edge: setting.Edge,
})
parent.Place(button, setting.Place)
window.Add(button)
}
}