Menu tweaks

Spinner?

wdgt_spinner.go

@@ -0,0 +1,106 @@
+/*
+Copyright © Brian Buller <brian@bullercodeworks.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package widgets
+
+import (
+	"time"
+
+	"github.com/gdamore/tcell"
+)
+
+// Spinner is just blank. It's a good placeholder, if needed.
+type Spinner struct {
+	id           string
+	x, y         int
+	style        tcell.Style
+	currentFrame int
+	frames       []rune
+	lastTick     time.Time
+	tickInterval time.Duration
+	keyMap       KeyMap
+}
+
+var _ Widget = (*Spinner)(nil)
+
+func NewSpinner(id string, style tcell.Style) *Spinner {
+	ret := &Spinner{id: id}
+	ret.Init(id, style)
+	return ret
+}
+
+func (w *Spinner) Init(id string, st tcell.Style) {
+	w.frames = []rune{'⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏'}
+	w.tickInterval = time.Second
+	w.keyMap = BlankKeyMap()
+}
+func (w *Spinner) Id() string                         { return w.id }
+func (w *Spinner) HandleResize(ev *tcell.EventResize) {}
+func (w *Spinner) SetKeyMap(km KeyMap)                { w.keyMap = km }
+func (w *Spinner) AddToKeyMap(km KeyMap)              { w.keyMap.Merge(km) }
+func (w *Spinner) RemoveFromKeyMap(km KeyMap) {
+	for k := range km.Keys {
+		w.keyMap.Remove(k)
+	}
+	for r := range km.Runes {
+		w.keyMap.RemoveRune(r)
+	}
+}
+func (w *Spinner) HandleKey(ev *tcell.EventKey) bool { return false }
+func (w *Spinner) HandleTime(ev *tcell.EventTime) {
+	for w.lastTick.Before(ev.When()) {
+		w.lastTick = w.lastTick.Add(w.tickInterval)
+		w.currentFrame = (w.currentFrame + 1) % len(w.frames)
+	}
+}
+
+func (w *Spinner) Draw(screen tcell.Screen) {
+	screen.SetContent(w.x, w.y, w.frames[w.currentFrame], nil, w.style)
+}
+
+func (w *Spinner) Active() bool        { return false }
+func (w *Spinner) SetActive(a bool)    {}
+func (w *Spinner) Visible() bool       { return true }
+func (w *Spinner) SetVisible(v bool)   {}
+func (w *Spinner) Focusable() bool     { return false }
+func (w *Spinner) SetFocusable(t bool) {}
+func (w *Spinner) SetX(x int)          {}
+func (w *Spinner) SetY(y int)          {}
+func (w *Spinner) GetX() int           { return w.x }
+func (w *Spinner) GetY() int           { return w.y }
+func (w *Spinner) GetPos() Coord       { return Coord{X: w.x, Y: w.y} }
+func (w *Spinner) SetPos(pos Coord)    {}
+func (w *Spinner) SetSize(size Coord)  {}
+func (w *Spinner) SetW(wd int)         {}
+func (w *Spinner) SetH(h int)          {}
+func (w *Spinner) GetW() int           { return 0 }
+func (w *Spinner) GetH() int           { return 0 }
+func (w *Spinner) WantW() int          { return 0 }
+func (w *Spinner) WantH() int          { return 0 }
+func (w *Spinner) MinW() int           { return 0 }
+func (w *Spinner) MinH() int           { return 0 }
+
+func (w *Spinner) SetFrames(frames []rune) {
+	w.frames = frames
+	w.currentFrame = 0
+}
+
+func (w *Spinner) SetTickInterface(d time.Duration) { w.tickInterval = d }