Initial commit.

This commit is contained in:
Greg 2019-08-08 18:11:20 -04:00
commit 9869efc448
1 changed files with 131 additions and 0 deletions

131
main.go Normal file
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package main
import (
"log"
"time"
"gioui.org/ui"
"gioui.org/ui/app"
"gioui.org/ui/input"
"gioui.org/ui/layout"
"gioui.org/ui/measure"
"gioui.org/ui/text"
//"gioui.org/ui/input"
"golang.org/x/image/font/gofont/goregular"
"golang.org/x/image/font/sfnt"
)
type Context struct {
c *app.Config
q input.Queue
ops *ui.Ops
cs layout.Constraints
dims layout.Dimens
faces measure.Faces
}
func NewContext() *Context {
return &Context{ops: new(ui.Ops)}
}
func (ctx *Context) Reset(w *app.Window, e app.DrawEvent) {
ctx.c = &e.Config
ctx.q = w.Queue()
ctx.ops.Reset()
ctx.cs = layout.RigidConstraints(e.Size)
ctx.faces.Reset(ctx.c)
}
func (fw fWidget) Layout(c ui.Config, q input.Queue, ops *ui.Ops, cs layout.Constraints) layout.Dimens {
return fw.l(c, q, ops, cs)
}
type Widget interface {
Layout(ui.Config, input.Queue, *ui.Ops, layout.Constraints) layout.Dimens
}
type fWidget struct {
l Layout
}
type WidgetCombinator func(...Widget) Widget
type Layout func(ui.Config, input.Queue, *ui.Ops, layout.Constraints) layout.Dimens
func (ctx *Context) Do(ls ...Layout) {
for _, l := range ls {
ctx.dims = l(ctx.c, ctx.q, ctx.ops, ctx.cs)
}
}
func main() {
go func() {
w := app.NewWindow(nil)
regular, err := sfnt.Parse(goregular.TTF)
if err != nil {
log.Fatal("Cannot parse font.")
}
ctx := NewContext()
t := time.NewTicker(time.Second/30)
e1 := &text.Editor{
Face: ctx.faces.For(regular, ui.Sp(24)),
SingleLine: true,
}
e1.SetText("hi there")
e1.Focus()
e2 := &text.Editor{
Face: ctx.faces.For(regular, ui.Sp(24)),
SingleLine: true,
}
e2.SetText("ok bye")
for {
select {
case <-t.C:
w.Invalidate()
case e := <-w.Events():
switch e := e.(type) {
case app.DestroyEvent:
return
case app.DrawEvent:
ctx.Reset(w,e)
f := Flex(layout.Vertical, layout.Start, layout.Start)
//f(e1,e2).Layout(ctx.c, ctx.q, ctx.ops, ctx.cs)
ctx.Do(f(e1,e2).Layout)
w.Draw(ctx.ops)
}
}
}
}()
app.Main()
}
func Flex(axis layout.Axis, mainAxisAlignment layout.MainAxisAlignment, crossAxisAlignment layout.CrossAxisAlignment) WidgetCombinator {
f := layout.Flex{
Axis: axis,
MainAxisAlignment: mainAxisAlignment,
CrossAxisAlignment: crossAxisAlignment,
}
return func(ws ...Widget) Widget {
ret := fWidget{}
ret.l = func(c ui.Config, q input.Queue, ops *ui.Ops, cs layout.Constraints) layout.Dimens {
f.Init(ops, cs)
cs = f.Rigid()
var dims layout.Dimens
fcs := make([]layout.FlexChild,len(ws))
for i, w := range ws {
if i > 0 {
cs = f.Flexible(1)
}
dims = w.Layout(c, q, ops, cs)
fcs[i] = f.End(dims)
}
return f.Layout(fcs...)
}
return ret
}
}